Thread 27 (Thread 0x7d915f3fc700 (LWP 5950)):
#0  0x00007f49d3e379f3 in futex_wait_cancelable (private=<optimized out>, expected=0, 
    futex_word=0x7f49cb62f98c <g_cv_wait+44>) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x7f49cb62f9a0 <_ZL4g_mu>, 
    cond=0x7f49cb62f960 <g_cv_wait>) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=cond@entry=0x7f49cb62f960 <g_cv_wait>, 
    mutex=mutex@entry=0x7f49cb62f9a0 <_ZL4g_mu>) at pthread_cond_wait.c:655
#3  0x00007f49cacd86b2 in gpr_cv_wait (cv=cv@entry=0x7f49cb62f960 <g_cv_wait>, 
    mu=mu@entry=0x7f49cb62f9a0 <_ZL4g_mu>, abs_deadline=...)
    at /home/vagrant/.cache/pants/rust/cargo/git/checkouts/grpc-rs-b50c79747a664460/ed3afa3/grpc-sys/grpc/src/core/lib/gpr/sync_posix.cc:128
#4  0x00007f49cace853d in wait_until (next=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/git/checkouts/grpc-rs-b50c79747a664460/ed3afa3/grpc-sys/grpc/src/core/lib/iomgr/timer_manager.cc:200
#5  timer_main_loop ()
    at /home/vagrant/.cache/pants/rust/cargo/git/checkouts/grpc-rs-b50c79747a664460/ed3afa3/grpc-sys/grpc/src/core/lib/iomgr/timer_manager.cc:255
#6  timer_thread (completed_thread_ptr=0x5618fb41dad0)
    at /home/vagrant/.cache/pants/rust/cargo/git/checkouts/grpc-rs-b50c79747a664460/ed3afa3/grpc-sys/grpc/src/core/lib/iomgr/timer_manager.cc:284
#7  0x00007f49cada7d13 in grpc_core::(anonymous namespace)::ThreadInternalsPosix::<lambda(void*)>::operator() (__closure=0x0, v=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/git/checkouts/grpc-rs-b50c79747a664460/ed3afa3/grpc-sys/grpc/src/core/lib/gprpp/thd_posix.cc:140
#8  grpc_core::(anonymous namespace)::ThreadInternalsPosix::<lambda(void*)>::_FUN(void *) ()
    at /home/vagrant/.cache/pants/rust/cargo/git/checkouts/grpc-rs-b50c79747a664460/ed3afa3/grpc-sys/grpc/src/core/lib/gprpp/thd_posix.cc:145
#9  0x00007f49d3e316db in start_thread (arg=0x7d915f3fc700) at pthread_create.c:463
#10 0x00007f49d33b588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 26 (Thread 0x7da5943d6700 (LWP 5947)):
#0  0x00007f49d3e379f3 in futex_wait_cancelable (private=<optimized out>, expected=0, 
    futex_word=0x5618feea425c) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x5618fef04ac0, cond=0x5618feea4230)
    at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x5618feea4230, mutex=0x5618fef04ac0) at pthread_cond_wait.c:655
#3  0x00007f49cb021cb3 in std::sys::unix::condvar::Condvar::wait () at src/libstd/sys/unix/condvar.rs:73
#4  std::sys_common::condvar::Condvar::wait () at src/libstd/sys_common/condvar.rs:50
#5  std::sync::condvar::Condvar::wait () at src/libstd/sync/condvar.rs:200
#6  std::thread::park () at src/libstd/thread/mod.rs:919
#7  0x00007f49cb02f842 in std::sync::mpsc::blocking::WaitToken::wait ()
    at src/libstd/sync/mpsc/blocking.rs:64
#8  0x00007f49caac4817 in std::sync::mpsc::shared::Packet<T>::recv (self=0x5618ff0c5840, deadline=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/sync/mpsc/shared.rs:235
#9  std::sync::mpsc::Receiver<T>::recv (self=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/sync/mpsc/mod.rs:1179
#10 indicatif::progress::MultiProgress::join_impl (self=0x7da5943d59c0, clear=false)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/indicatif-0.14.0/src/progress.rs:974
#11 0x00007f49caac322b in indicatif::progress::MultiProgress::join (self=0x80)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/indicatif-0.14.0/src/progress.rs:945
#12 0x00007f49caaaa93c in ui::ConsoleUI::initialize::{{closure}} () at ui/src/console_ui.rs:184
#13 task_executor::Executor::spawn_blocking::{{closure}} ()
    at /src/pants/src/rust/engine/task_executor/src/lib.rs:111
#14 <tokio::runtime::blocking::task::BlockingTask<T> as core::future::future::Future>::poll (self=..., 
    _cx=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/blocking/task.rs:38
#15 tokio::runtime::task::core::Core<T,S>::poll::{{closure}} (ptr=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/core.rs:173
#16 tokio::loom::std::unsafe_cell::UnsafeCell<T>::with_mut (self=<optimized out>, f=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/loom/std/unsafe_cell.rs:14
#17 tokio::runtime::task::core::Core<T,S>::poll (self=<optimized out>, header=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/core.rs:158
#18 tokio::runtime::task::harness::Harness<T,S>::poll::{{closure}} ()
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/harness.rs:113
#19 core::ops::function::FnOnce::call_once ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libcore/ops/function.rs:232
#20 <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once (self=..., 
    _args=<optimized out>) at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panic.rs:318
#21 std::panicking::try::do_call (data=0x7da5943d5be0 "\320[=\224\245}")
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panicking.rs:303
#22 0x00007f49cb03ce37 in __rust_maybe_catch_panic () at src/libpanic_unwind/lib.rs:86
#23 0x00007f49caab205b in std::panicking::try (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panicking.rs:281
#24 std::panic::catch_unwind (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panic.rs:394
#25 tokio::runtime::task::harness::Harness<T,S>::poll (self=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/harness.rs:89
#26 tokio::runtime::task::raw::poll (ptr=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/raw.rs:104
#27 0x00007f49caf2f637 in tokio::runtime::task::raw::RawTask::poll (self=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/raw.rs:66
#28 tokio::runtime::task::Notified<S>::run (self=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/mod.rs:169
#29 tokio::runtime::blocking::pool::Inner::run (self=0x5618fabc9140)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/blocking/pool.rs:230
#30 tokio::runtime::blocking::pool::Spawner::spawn_thread::{{closure}}::{{closure}} ()
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/blocking/pool.rs:210
#31 tokio::runtime::context::enter (new=..., f=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/context.rs:72
#32 tokio::runtime::handle::Handle::enter (self=0x7da5943d5ce0, f=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/handle.rs:71
#33 tokio::runtime::blocking::pool::Spawner::spawn_thread::{{closure}} ()
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/blocking/pool.rs:209
#34 std::sys_common::backtrace::__rust_begin_short_backtrace (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/sys_common/backtrace.rs:130
#35 0x00007f49caf31505 in std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}} ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/thread/mod.rs:475
#36 <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once (self=..., 
    _args=<optimized out>) at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panic.rs:318
#37 std::panicking::try::do_call (data=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panicking.rs:303
#38 0x00007f49cb03ce37 in __rust_maybe_catch_panic () at src/libpanic_unwind/lib.rs:86
#39 0x00007f49caf3298a in std::panicking::try (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panicking.rs:281
#40 std::panic::catch_unwind (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panic.rs:394
#41 std::thread::Builder::spawn_unchecked::{{closure}} ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/thread/mod.rs:474
#42 core::ops::function::FnOnce::call_once{{vtable-shim}} ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libcore/ops/function.rs:232
#43 0x00007f49cb020d9f in <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/liballoc/boxed.rs:1017
#44 0x00007f49cb03bfbd in <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/liballoc/boxed.rs:1017
#45 std::sys_common::thread::start_thread () at src/libstd/sys_common/thread.rs:13
#46 std::sys::unix::thread::Thread::new::thread_start () at src/libstd/sys/unix/thread.rs:80
#47 0x00007f49d3e316db in start_thread (arg=0x7da5943d6700) at pthread_create.c:463
#48 0x00007f49d33b588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 25 (Thread 0x7d915ffff700 (LWP 5946)):
#0  0x00007f49d3e379f3 in futex_wait_cancelable (private=<optimized out>, expected=0, 
    futex_word=0x7d9154001250) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x7d9154001200, cond=0x7d9154001228)
    at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x7d9154001228, mutex=0x7d9154001200) at pthread_cond_wait.c:655
#3  0x00007f49cb011408 in parking_lot_core::thread_parker::ThreadParker::park (self=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/parking_lot_core-0.3.1/src/thread_parker/unix.rs:95
#4  parking_lot_core::parking_lot::park_internal (key=<optimized out>, validate=..., before_sleep=..., 
    timed_out=..., park_token=..., timeout=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/parking_lot_core-0.3.1/src/parking_lot.rs:597
#5  0x00007f49cb00f524 in parking_lot_core::parking_lot::park (key=138063133020752, validate=..., 
    timed_out=..., park_token=..., before_sleep=..., timeout=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/parking_lot_core-0.3.1/src/parking_lot.rs:542
#6  parking_lot::raw_mutex::RawMutex::lock_slow (self=<optimized out>, timeout=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/parking_lot-0.6.4/src/raw_mutex.rs:235
#7  0x00007f49ca7e2d15 in <parking_lot::raw_mutex::RawMutex as lock_api::mutex::RawMutex>::lock (
    self=0x5618fa392520)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/parking_lot-0.6.4/src/raw_mutex.rs:54
#8  lock_api::mutex::Mutex<R,T>::lock (self=0x5618fa392520)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/lock_api-0.1.5/src/mutex.rs:148
#9  workunit_store::WorkunitStore::with_latest_workunits (max_verbosity=<optimized out>, f=..., 
    self=<optimized out>) at /src/pants/src/rust/engine/workunit_store/src/lib.rs:326
#10 engine::externs::interface::poll_session_workunits::{{closure}}::{{closure}} (session=<optimized out>)
    at src/externs/interface.rs:851
#11 engine::externs::interface::with_session (session_ptr=..., f=..., py=...)
    at src/externs/interface.rs:1597
#12 engine::externs::interface::poll_session_workunits::{{closure}} (scheduler=0x7f49c6642700)
    at src/externs/interface.rs:850
#13 engine::externs::interface::with_scheduler::{{closure}} () at src/externs/interface.rs:1586
#14 tokio::runtime::context::enter (new=..., f=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/context.rs:72
#15 tokio::runtime::handle::Handle::enter (self=<optimized out>, f=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/handle.rs:71
#16 tokio::runtime::Runtime::enter (self=<optimized out>, f=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/mod.rs:486
#17 engine::externs::interface::with_scheduler (scheduler_ptr=..., f=..., py=...)
    at src/externs/interface.rs:1586
#18 engine::externs::interface::poll_session_workunits (scheduler_ptr=..., session_ptr=..., 
    max_log_verbosity_level=<optimized out>, py=...) at src/externs/interface.rs:849
#19 engine::externs::interface::PyInit_native_engine::init::wrap::{{closure}} (py=...)
    at <::cpython::function::py_fn_impl macros>:20
#20 cpython::function::handle_callback::{{closure}} ()
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/cpython-0.5.0/src/function.rs:219
#21 std::panicking::try::do_call (data=0x7d915fffe5b0 "\240\345\377_\221}")
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panicking.rs:303
#22 0x00007f49cb03ce37 in __rust_maybe_catch_panic () at src/libpanic_unwind/lib.rs:86
#23 0x00007f49ca915cc6 in std::panicking::try (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panicking.rs:281
#24 std::panic::catch_unwind (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panic.rs:394
#25 cpython::function::handle_callback (location=..., f=..., _c=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/cpython-0.5.0/src/function.rs:217
#26 engine::externs::interface::PyInit_native_engine::init::wrap (_slf=<optimized out>, 
    args=<optimized out>, kwargs=<optimized out>) at <::cpython::function::py_fn_impl macros>:13
#27 0x00005618f9a9644a in cfunction_call_varargs (kwargs=0x0, args=0x7f49c8128fc0, func=0x7f49cb6731d0)
    at Objects/call.c:742
#28 PyCFunction_Call (func=func@entry=0x7f49cb6731d0, args=args@entry=0x7f49c8128fc0, 
    kwargs=kwargs@entry=0x0) at Objects/call.c:772
#29 0x00005618f9a92c21 in _PyObject_MakeTpCall (callable=callable@entry=0x7f49cb6731d0, 
    args=args@entry=0x7f49c415a918, nargs=<optimized out>, keywords=keywords@entry=0x0)
    at Objects/call.c:159
#30 0x00005618f9a83945 in _PyObject_Vectorcall (kwnames=<optimized out>, nargsf=<optimized out>, 
    args=<optimized out>, callable=<optimized out>) at ./Include/cpython/abstract.h:125
#31 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, tstate=0x5618fe866550)
    at Python/ceval.c:4987
#32 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3469
#33 0x00005618f9a79b17 in function_code_fastcall (co=<optimized out>, args=<optimized out>, nargs=3, 
    globals=<optimized out>) at Objects/call.c:283
#34 0x00005618f9a804e2 in _PyObject_Vectorcall (kwnames=<optimized out>, nargsf=<optimized out>, 
    args=<optimized out>, callable=<optimized out>) at ./Include/cpython/abstract.h:127
#35 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, tstate=0x5618fe866550)
    at Python/ceval.c:4987
#36 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3486
#37 0x00005618f9a79b17 in function_code_fastcall (co=<optimized out>, args=<optimized out>, nargs=2, 
    globals=<optimized out>) at Objects/call.c:283
#38 0x00005618f9a804e2 in _PyObject_Vectorcall (kwnames=<optimized out>, nargsf=<optimized out>, 
    args=<optimized out>, callable=<optimized out>) at ./Include/cpython/abstract.h:127
#39 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, tstate=0x5618fe866550)
    at Python/ceval.c:4987
#40 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3486
#41 0x00005618f9a79b17 in function_code_fastcall (co=<optimized out>, args=<optimized out>, nargs=1, 
    globals=<optimized out>) at Objects/call.c:283
#42 0x00005618f9a804e2 in _PyObject_Vectorcall (kwnames=<optimized out>, nargsf=<optimized out>, 
    args=<optimized out>, callable=<optimized out>) at ./Include/cpython/abstract.h:127
#43 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, tstate=0x5618fe866550)
    at Python/ceval.c:4987
#44 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3486
#45 0x00005618f9a79b17 in function_code_fastcall (co=<optimized out>, args=<optimized out>, nargs=1, 
    globals=<optimized out>) at Objects/call.c:283
#46 0x00005618f9a804e2 in _PyObject_Vectorcall (kwnames=<optimized out>, nargsf=<optimized out>, 
    args=<optimized out>, callable=<optimized out>) at ./Include/cpython/abstract.h:127
#47 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, tstate=0x5618fe866550)
    at Python/ceval.c:4987
#48 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3486
#49 0x00005618f9a79b17 in function_code_fastcall (co=<optimized out>, args=<optimized out>, nargs=1, 
    globals=<optimized out>) at Objects/call.c:283
#50 0x00005618f9c56b24 in _PyObject_Vectorcall (kwnames=0x0, nargsf=1, args=0x7d915fffedf8, 
    callable=0x7f49d266bca0) at ./Include/cpython/abstract.h:127
#51 method_vectorcall (method=method@entry=0x7f49c663f9c0, args=<optimized out>, nargsf=nargsf@entry=0, 
    kwnames=0x0) at Objects/classobject.c:67
#52 0x00005618f9a9608f in PyVectorcall_Call (callable=0x7f49c663f9c0, tuple=<optimized out>, 
    kwargs=<optimized out>) at Objects/call.c:199
#53 0x00005618f9c15dba in t_bootstrap (boot_raw=boot_raw@entry=0x7f49c67becf0)
    at ./Modules/_threadmodule.c:1002
#54 0x00005618f9bb7c77 in pythread_wrapper (arg=<optimized out>) at Python/thread_pthread.h:232
#55 0x00007f49d3e316db in start_thread (arg=0x7d915ffff700) at pthread_create.c:463
#56 0x00007f49d33b588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 24 (Thread 0x7da594ff9700 (LWP 5945)):
#0  0x00007f49d3e37ed9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7da594ff8540, 
    expected=0, futex_word=0x5618f9fdd208 <_PyRuntime+1224>)
    at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  __pthread_cond_wait_common (abstime=0x7da594ff85f0, mutex=0x5618f9fdd210 <_PyRuntime+1232>, 
    cond=0x5618f9fdd1e0 <_PyRuntime+1184>) at pthread_cond_wait.c:533
#2  __pthread_cond_timedwait (cond=cond@entry=0x5618f9fdd1e0 <_PyRuntime+1184>, 
    mutex=mutex@entry=0x5618f9fdd210 <_PyRuntime+1232>, abstime=abstime@entry=0x7da594ff85f0)
    at pthread_cond_wait.c:667
#3  0x00005618f9b54f7c in PyCOND_TIMEDWAIT (us=<optimized out>, mut=0x5618f9fdd210 <_PyRuntime+1232>, 
    cond=0x5618f9fdd1e0 <_PyRuntime+1184>) at Python/condvar.h:73
#4  take_gil (ceval=0x5618f9fdcf88 <_PyRuntime+584>, tstate=tstate@entry=0x5618fe53f7a0)
    at Python/ceval_gil.h:206
#5  0x00005618f9b56506 in PyEval_RestoreThread (tstate=tstate@entry=0x5618fe53f7a0) at Python/ceval.c:399
#6  0x00005618f9c13a03 in pysleep (secs=<optimized out>) at ./Modules/timemodule.c:1850
#7  time_sleep (self=<optimized out>, obj=<optimized out>) at ./Modules/timemodule.c:338
#8  0x00005618f9adf70d in cfunction_vectorcall_O (func=0x7f49d41d5e00, args=<optimized out>, 
    nargsf=<optimized out>, kwnames=<optimized out>) at Objects/methodobject.c:481
#9  0x00005618f9a82596 in _PyObject_Vectorcall (kwnames=<optimized out>, nargsf=<optimized out>, 
    args=<optimized out>, callable=<optimized out>) at ./Include/cpython/abstract.h:127
#10 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, tstate=0x5618fe53f7a0)
    at Python/ceval.c:4987
#11 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3469
#12 0x00005618f9a79b17 in function_code_fastcall (co=<optimized out>, args=<optimized out>, nargs=1, 
    globals=<optimized out>) at Objects/call.c:283
#13 0x00005618f9c56b24 in _PyObject_Vectorcall (kwnames=0x0, nargsf=1, args=0x7da594ff8898, 
    callable=0x7f49cc911430) at ./Include/cpython/abstract.h:127
#14 method_vectorcall (method=method@entry=0x7f49c65f5a80, args=<optimized out>, nargsf=nargsf@entry=0, 
    kwnames=0x0) at Objects/classobject.c:67
#15 0x00005618f9a9608f in PyVectorcall_Call (callable=0x7f49c65f5a80, tuple=<optimized out>, 
    kwargs=<optimized out>) at Objects/call.c:199
#16 0x00005618f9a7d4ce in do_call_core (kwdict=0x7f49c67bcf00, callargs=0x7f49d4221040, 
    func=0x7f49c65f5a80, tstate=0x5618fe53f7a0) at Python/ceval.c:5034
#17 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3559
#18 0x00005618f9a79b17 in function_code_fastcall (co=<optimized out>, args=<optimized out>, nargs=1, 
    globals=<optimized out>) at Objects/call.c:283
#19 0x00005618f9a804e2 in _PyObject_Vectorcall (kwnames=<optimized out>, nargsf=<optimized out>, 
    args=<optimized out>, callable=<optimized out>) at ./Include/cpython/abstract.h:127
#20 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, tstate=0x5618fe53f7a0)
    at Python/ceval.c:4987
#21 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3486
#22 0x00005618f9a79b17 in function_code_fastcall (co=<optimized out>, args=<optimized out>, nargs=1, 
    globals=<optimized out>) at Objects/call.c:283
#23 0x00005618f9a804e2 in _PyObject_Vectorcall (kwnames=<optimized out>, nargsf=<optimized out>, 
    args=<optimized out>, callable=<optimized out>) at ./Include/cpython/abstract.h:127
#24 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, tstate=0x5618fe53f7a0)
    at Python/ceval.c:4987
#25 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3486
#26 0x00005618f9a79b17 in function_code_fastcall (co=<optimized out>, args=<optimized out>, nargs=1, 
    globals=<optimized out>) at Objects/call.c:283
#27 0x00005618f9c56b24 in _PyObject_Vectorcall (kwnames=0x0, nargsf=1, args=0x7da594ff8df8, 
    callable=0x7f49d266bca0) at ./Include/cpython/abstract.h:127
#28 method_vectorcall (method=method@entry=0x7f49c65f5900, args=<optimized out>, nargsf=nargsf@entry=0, 
    kwnames=0x0) at Objects/classobject.c:67
#29 0x00005618f9a9608f in PyVectorcall_Call (callable=0x7f49c65f5900, tuple=<optimized out>, 
    kwargs=<optimized out>) at Objects/call.c:199
#30 0x00005618f9c15dba in t_bootstrap (boot_raw=boot_raw@entry=0x7f49c67be450)
    at ./Modules/_threadmodule.c:1002
#31 0x00005618f9bb7c77 in pythread_wrapper (arg=<optimized out>) at Python/thread_pthread.h:232
#32 0x00007f49d3e316db in start_thread (arg=0x7da594ff9700) at pthread_create.c:463
#33 0x00007f49d33b588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 23 (Thread 0x7da5957fa700 (LWP 5944)):
#0  0x00007f49d3e37ed9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7da5957f97a0, 
    expected=0, futex_word=0x5618f9fdd208 <_PyRuntime+1224>)
    at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  __pthread_cond_wait_common (abstime=0x7da5957f9850, mutex=0x5618f9fdd210 <_PyRuntime+1232>, 
    cond=0x5618f9fdd1e0 <_PyRuntime+1184>) at pthread_cond_wait.c:533
#2  __pthread_cond_timedwait (cond=cond@entry=0x5618f9fdd1e0 <_PyRuntime+1184>, 
    mutex=mutex@entry=0x5618f9fdd210 <_PyRuntime+1232>, abstime=abstime@entry=0x7da5957f9850)
    at pthread_cond_wait.c:667
#3  0x00005618f9b54f7c in PyCOND_TIMEDWAIT (us=<optimized out>, mut=0x5618f9fdd210 <_PyRuntime+1232>, 
    cond=0x5618f9fdd1e0 <_PyRuntime+1184>) at Python/condvar.h:73
#4  take_gil (ceval=0x5618f9fdcf88 <_PyRuntime+584>, tstate=tstate@entry=0x5618fe50a880)
    at Python/ceval_gil.h:206
#5  0x00005618f9b56506 in PyEval_RestoreThread (tstate=tstate@entry=0x5618fe50a880) at Python/ceval.c:399
#6  0x00005618f9c13a03 in pysleep (secs=<optimized out>) at ./Modules/timemodule.c:1850
#7  time_sleep (self=<optimized out>, obj=<optimized out>) at ./Modules/timemodule.c:338
#8  0x00005618f9adf70d in cfunction_vectorcall_O (func=0x7f49d41d5e00, args=<optimized out>, 
    nargsf=<optimized out>, kwnames=<optimized out>) at Objects/methodobject.c:481
#9  0x00005618f9a82596 in _PyObject_Vectorcall (kwnames=<optimized out>, nargsf=<optimized out>, 
    args=<optimized out>, callable=<optimized out>) at ./Include/cpython/abstract.h:127
#10 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, tstate=0x5618fe50a880)
    at Python/ceval.c:4987
#11 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3469
#12 0x00005618f9a79b17 in function_code_fastcall (co=<optimized out>, args=<optimized out>, nargs=1, 
    globals=<optimized out>) at Objects/call.c:283
#13 0x00005618f9a804e2 in _PyObject_Vectorcall (kwnames=<optimized out>, nargsf=<optimized out>, 
    args=<optimized out>, callable=<optimized out>) at ./Include/cpython/abstract.h:127
#14 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, tstate=0x5618fe50a880)
    at Python/ceval.c:4987
#15 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3486
#16 0x00005618f9a79b17 in function_code_fastcall (co=<optimized out>, args=<optimized out>, nargs=1, 
    globals=<optimized out>) at Objects/call.c:283
#17 0x00005618f9a804e2 in _PyObject_Vectorcall (kwnames=<optimized out>, nargsf=<optimized out>, 
    args=<optimized out>, callable=<optimized out>) at ./Include/cpython/abstract.h:127
#18 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, tstate=0x5618fe50a880)
    at Python/ceval.c:4987
#19 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3486
#20 0x00005618f9a79b17 in function_code_fastcall (co=<optimized out>, args=<optimized out>, nargs=1, 
    globals=<optimized out>) at Objects/call.c:283
#21 0x00005618f9c56b24 in _PyObject_Vectorcall (kwnames=0x0, nargsf=1, args=0x7da5957f9df8, 
    callable=0x7f49d266bca0) at ./Include/cpython/abstract.h:127
#22 method_vectorcall (method=method@entry=0x7f49c779e900, args=<optimized out>, nargsf=nargsf@entry=0, 
    kwnames=0x0) at Objects/classobject.c:67
#23 0x00005618f9a9608f in PyVectorcall_Call (callable=0x7f49c779e900, tuple=<optimized out>, 
    kwargs=<optimized out>) at Objects/call.c:199
#24 0x00005618f9c15dba in t_bootstrap (boot_raw=boot_raw@entry=0x7f49c67532a0)
    at ./Modules/_threadmodule.c:1002
#25 0x00005618f9bb7c77 in pythread_wrapper (arg=<optimized out>) at Python/thread_pthread.h:232
#26 0x00007f49d3e316db in start_thread (arg=0x7da5957fa700) at pthread_create.c:463
#27 0x00007f49d33b588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 22 (Thread 0x7da595ffb700 (LWP 5943)):
#0  0x00007f49d3e3a6d6 in futex_abstimed_wait_cancelable (private=0, abstime=0x0, expected=0, 
    futex_word=0x5618fee7cc70) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
#1  do_futex_wait (sem=sem@entry=0x5618fee7cc70, abstime=0x0) at sem_waitcommon.c:111
#2  0x00007f49d3e3a7c8 in __new_sem_wait_slow (sem=sem@entry=0x5618fee7cc70, abstime=0x0)
    at sem_waitcommon.c:181
#3  0x00007f49d3e3a839 in __new_sem_wait (sem=sem@entry=0x5618fee7cc70) at sem_wait.c:42
#4  0x00005618f9bb82fe in PyThread_acquire_lock_timed (lock=0x5618fee7cc70, 
    microseconds=microseconds@entry=-1, intr_flag=intr_flag@entry=1) at Python/thread_pthread.h:459
#5  0x00007f49ce25f8e4 in _queue_SimpleQueue_get_impl (timeout=<optimized out>, block=<optimized out>, 
    self=<optimized out>) at /tmp/python-build.20200430201249.17277/Python-3.8.2/Modules/_queuemodule.c:222
#6  _queue_SimpleQueue_get (self=0x7f49c65e4400, args=<optimized out>, nargs=<optimized out>, 
    kwnames=<optimized out>)
    at /tmp/python-build.20200430201249.17277/Python-3.8.2/Modules/clinic/_queuemodule.c.h:171
#7  0x00005618f9adf9fd in cfunction_vectorcall_FASTCALL_KEYWORDS (func=0x7f49c65cfdb0, 
    args=<optimized out>, nargsf=<optimized out>, kwnames=<optimized out>) at Objects/methodobject.c:436
#8  0x00005618f9a80bbe in _PyObject_Vectorcall (kwnames=<optimized out>, nargsf=<optimized out>, 
    args=<optimized out>, callable=<optimized out>) at ./Include/cpython/abstract.h:127
#9  call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, tstate=0x5618fa1e8c10)
    at Python/ceval.c:4987
#10 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3500
#11 0x00005618f9a79b17 in function_code_fastcall (co=<optimized out>, args=<optimized out>, nargs=3, 
    globals=<optimized out>) at Objects/call.c:283
#12 0x00005618f9a9608f in PyVectorcall_Call (callable=0x7f49ce21b040, tuple=<optimized out>, 
    kwargs=<optimized out>) at Objects/call.c:199
#13 0x00005618f9a7d4ce in do_call_core (kwdict=0x7f49c65f5940, callargs=0x7f49c65dc940, 
    func=0x7f49ce21b040, tstate=0x5618fa1e8c10) at Python/ceval.c:5034
#14 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3559
#15 0x00005618f9a79b17 in function_code_fastcall (co=<optimized out>, args=<optimized out>, nargs=1, 
    globals=<optimized out>) at Objects/call.c:283
#16 0x00005618f9a804e2 in _PyObject_Vectorcall (kwnames=<optimized out>, nargsf=<optimized out>, 
    args=<optimized out>, callable=<optimized out>) at ./Include/cpython/abstract.h:127
#17 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, tstate=0x5618fa1e8c10)
    at Python/ceval.c:4987
#18 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3486
#19 0x00005618f9a79b17 in function_code_fastcall (co=<optimized out>, args=<optimized out>, nargs=1, 
    globals=<optimized out>) at Objects/call.c:283
#20 0x00005618f9a804e2 in _PyObject_Vectorcall (kwnames=<optimized out>, nargsf=<optimized out>, 
    args=<optimized out>, callable=<optimized out>) at ./Include/cpython/abstract.h:127
#21 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, tstate=0x5618fa1e8c10)
    at Python/ceval.c:4987
#22 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3486
#23 0x00005618f9a79b17 in function_code_fastcall (co=<optimized out>, args=<optimized out>, nargs=1, 
    globals=<optimized out>) at Objects/call.c:283
#24 0x00005618f9c56b24 in _PyObject_Vectorcall (kwnames=0x0, nargsf=1, args=0x7da595ffadf8, 
    callable=0x7f49d266bca0) at ./Include/cpython/abstract.h:127
#25 method_vectorcall (method=method@entry=0x7f49c679d3c0, args=<optimized out>, nargsf=nargsf@entry=0, 
    kwnames=0x0) at Objects/classobject.c:67
#26 0x00005618f9a9608f in PyVectorcall_Call (callable=0x7f49c679d3c0, tuple=<optimized out>, 
    kwargs=<optimized out>) at Objects/call.c:199
#27 0x00005618f9c15dba in t_bootstrap (boot_raw=boot_raw@entry=0x7f49c675d240)
    at ./Modules/_threadmodule.c:1002
#28 0x00005618f9bb7c77 in pythread_wrapper (arg=<optimized out>) at Python/thread_pthread.h:232
#29 0x00007f49d3e316db in start_thread (arg=0x7da595ffb700) at pthread_create.c:463
#30 0x00007f49d33b588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 21 (Thread 0x7da5967fc700 (LWP 5942)):
#0  0x00007f49d3e3a6d6 in futex_abstimed_wait_cancelable (private=0, abstime=0x0, expected=0, 
    futex_word=0x5618feeb71e0) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
#1  do_futex_wait (sem=sem@entry=0x5618feeb71e0, abstime=0x0) at sem_waitcommon.c:111
#2  0x00007f49d3e3a7c8 in __new_sem_wait_slow (sem=sem@entry=0x5618feeb71e0, abstime=0x0)
    at sem_waitcommon.c:181
#3  0x00007f49d3e3a839 in __new_sem_wait (sem=sem@entry=0x5618feeb71e0) at sem_wait.c:42
#4  0x00005618f9bb82fe in PyThread_acquire_lock_timed (lock=0x5618feeb71e0, 
    microseconds=microseconds@entry=-1, intr_flag=intr_flag@entry=1) at Python/thread_pthread.h:459
#5  0x00007f49ce25f8e4 in _queue_SimpleQueue_get_impl (timeout=<optimized out>, block=<optimized out>, 
    self=<optimized out>) at /tmp/python-build.20200430201249.17277/Python-3.8.2/Modules/_queuemodule.c:222
#6  _queue_SimpleQueue_get (self=0x7f49c65e44a0, args=<optimized out>, nargs=<optimized out>, 
    kwnames=<optimized out>)
    at /tmp/python-build.20200430201249.17277/Python-3.8.2/Modules/clinic/_queuemodule.c.h:171
#7  0x00005618f9adf9fd in cfunction_vectorcall_FASTCALL_KEYWORDS (func=0x7f49c65f6e50, 
    args=<optimized out>, nargsf=<optimized out>, kwnames=<optimized out>) at Objects/methodobject.c:436
#8  0x00005618f9c69a04 in _PyObject_Vectorcall (args=0x0, nargsf=0, kwnames=0x0, callable=0x7f49c65f6e50)
    at ./Include/cpython/abstract.h:127
#9  _PyObject_CallNoArg (func=0x7f49c65f6e50) at ./Include/cpython/abstract.h:153
#10 calliter_iternext (it=0x7f49c675d640) at Objects/iterobject.c:221
#11 0x00005618f9a7babd in _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>)
    at Python/ceval.c:3202
#12 0x00005618f9a79b17 in function_code_fastcall (co=<optimized out>, args=<optimized out>, nargs=5, 
    globals=<optimized out>) at Objects/call.c:283
#13 0x00005618f9a9608f in PyVectorcall_Call (callable=0x7f49ce218f70, tuple=<optimized out>, 
    kwargs=<optimized out>) at Objects/call.c:199
#14 0x00005618f9a7d4ce in do_call_core (kwdict=0x7f49c65f57c0, callargs=0x7f49c6620770, 
    func=0x7f49ce218f70, tstate=0x5618fa275a40) at Python/ceval.c:5034
#15 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3559
#16 0x00005618f9a79b17 in function_code_fastcall (co=<optimized out>, args=<optimized out>, nargs=1, 
    globals=<optimized out>) at Objects/call.c:283
#17 0x00005618f9a804e2 in _PyObject_Vectorcall (kwnames=<optimized out>, nargsf=<optimized out>, 
    args=<optimized out>, callable=<optimized out>) at ./Include/cpython/abstract.h:127
#18 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, tstate=0x5618fa275a40)
    at Python/ceval.c:4987
#19 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3486
#20 0x00005618f9a79b17 in function_code_fastcall (co=<optimized out>, args=<optimized out>, nargs=1, 
    globals=<optimized out>) at Objects/call.c:283
#21 0x00005618f9a804e2 in _PyObject_Vectorcall (kwnames=<optimized out>, nargsf=<optimized out>, 
    args=<optimized out>, callable=<optimized out>) at ./Include/cpython/abstract.h:127
#22 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, tstate=0x5618fa275a40)
    at Python/ceval.c:4987
#23 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3486
#24 0x00005618f9a79b17 in function_code_fastcall (co=<optimized out>, args=<optimized out>, nargs=1, 
    globals=<optimized out>) at Objects/call.c:283
#25 0x00005618f9c56b24 in _PyObject_Vectorcall (kwnames=0x0, nargsf=1, args=0x7da5967fbdf8, 
    callable=0x7f49d266bca0) at ./Include/cpython/abstract.h:127
#26 method_vectorcall (method=method@entry=0x7f49c6799280, args=<optimized out>, nargsf=nargsf@entry=0, 
    kwnames=0x0) at Objects/classobject.c:67
#27 0x00005618f9a9608f in PyVectorcall_Call (callable=0x7f49c6799280, tuple=<optimized out>, 
    kwargs=<optimized out>) at Objects/call.c:199
#28 0x00005618f9c15dba in t_bootstrap (boot_raw=boot_raw@entry=0x7f49c675d5a0)
    at ./Modules/_threadmodule.c:1002
#29 0x00005618f9bb7c77 in pythread_wrapper (arg=<optimized out>) at Python/thread_pthread.h:232
#30 0x00007f49d3e316db in start_thread (arg=0x7da5967fc700) at pthread_create.c:463
#31 0x00007f49d33b588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 20 (Thread 0x7da596ffd700 (LWP 5941)):
#0  0x00007f49d33a8bf9 in __GI___poll (fds=0x7f49d1995c20, nfds=1, timeout=timeout@entry=-1)
    at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f49d084b3f9 in poll (__timeout=<optimized out>, __nfds=<optimized out>, __fds=<optimized out>)
    at /usr/include/x86_64-linux-gnu/bits/poll2.h:46
#2  select_poll_poll_impl (timeout_obj=<optimized out>, self=0x7f49c675d900)
    at /tmp/python-build.20200430201249.17277/Python-3.8.2/Modules/selectmodule.c:633
#3  select_poll_poll (self=0x7f49c675d900, args=<optimized out>, nargs=<optimized out>)
    at /tmp/python-build.20200430201249.17277/Python-3.8.2/Modules/clinic/selectmodule.c.h:218
#4  0x00005618f9c5e722 in method_vectorcall_FASTCALL (func=0x7f49d1284e00, args=0x7f49c65fa9f0, 
    nargsf=<optimized out>, kwnames=0x0) at Objects/descrobject.c:353
#5  0x00005618f9a804e2 in _PyObject_Vectorcall (kwnames=<optimized out>, nargsf=<optimized out>, 
    args=<optimized out>, callable=<optimized out>) at ./Include/cpython/abstract.h:127
#6  call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, tstate=0x5618fe573660)
    at Python/ceval.c:4987
#7  _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3486
#8  0x00005618f9b575c0 in PyEval_EvalFrameEx (throwflag=0, f=0x7f49c65fa840) at Python/ceval.c:741
#9  _PyEval_EvalCodeWithName (_co=<optimized out>, globals=<optimized out>, locals=locals@entry=0x0, 
    args=<optimized out>, argcount=2, kwnames=0x0, kwargs=0x7f49c65fa7f8, kwcount=0, kwstep=1, 
    defs=0x7f49d196d118, defcount=1, kwdefs=0x0, closure=0x0, name=0x7f49d19710b0, qualname=0x7f49d1284490)
    at Python/ceval.c:4298
#10 0x00005618f9a93172 in _PyFunction_Vectorcall (func=<optimized out>, stack=<optimized out>, 
    nargsf=<optimized out>, kwnames=<optimized out>) at Objects/call.c:435
#11 0x00005618f9a804e2 in _PyObject_Vectorcall (kwnames=<optimized out>, nargsf=<optimized out>, 
    args=<optimized out>, callable=<optimized out>) at ./Include/cpython/abstract.h:127
#12 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, tstate=0x5618fe573660)
    at Python/ceval.c:4987
#13 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3486
#14 0x00005618f9b575c0 in PyEval_EvalFrameEx (throwflag=0, f=0x7f49c65fa640) at Python/ceval.c:741
#15 _PyEval_EvalCodeWithName (_co=<optimized out>, globals=<optimized out>, locals=locals@entry=0x0, 
    args=<optimized out>, argcount=1, kwnames=0x7f49ce1ebb08, kwargs=0x7f49c65fbc50, kwcount=1, kwstep=1, 
    defs=0x7f49ce211538, defcount=1, kwdefs=0x0, closure=0x0, name=0x7f49d41c07f0, qualname=0x7f49d41c07f0)
    at Python/ceval.c:4298
#16 0x00005618f9a93172 in _PyFunction_Vectorcall (func=<optimized out>, stack=<optimized out>, 
    nargsf=<optimized out>, kwnames=<optimized out>) at Objects/call.c:435
#17 0x00005618f9a80498 in _PyObject_Vectorcall (kwnames=<optimized out>, nargsf=<optimized out>, 
    args=<optimized out>, callable=<optimized out>) at ./Include/cpython/abstract.h:127
#18 call_function (kwnames=0x7f49ce1ebaf0, oparg=<optimized out>, pp_stack=<synthetic pointer>, 
    tstate=0x5618fe573660) at Python/ceval.c:4987
#19 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3515
#20 0x00005618f9b575c0 in PyEval_EvalFrameEx (throwflag=0, f=0x7f49c65fbac0) at Python/ceval.c:741
#21 _PyEval_EvalCodeWithName (_co=<optimized out>, globals=<optimized out>, locals=locals@entry=0x0, 
    args=<optimized out>, argcount=2, kwnames=0x0, kwargs=0x7d9168000f90, kwcount=0, kwstep=1, 
    defs=0x7f49ce1ebe98, defcount=1, kwdefs=0x0, closure=0x0, name=0x7f49ce1f08f0, qualname=0x7f49ce1f0940)
    at Python/ceval.c:4298
#22 0x00005618f9a93172 in _PyFunction_Vectorcall (func=<optimized out>, stack=<optimized out>, 
    nargsf=<optimized out>, kwnames=<optimized out>) at Objects/call.c:435
#23 0x00005618f9a82596 in _PyObject_Vectorcall (kwnames=<optimized out>, nargsf=<optimized out>, 
    args=<optimized out>, callable=<optimized out>) at ./Include/cpython/abstract.h:127
#24 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, tstate=0x5618fe573660)
    at Python/ceval.c:4987
#25 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3469
#26 0x00005618f9a79b17 in function_code_fastcall (co=<optimized out>, args=<optimized out>, nargs=15, 
    globals=<optimized out>) at Objects/call.c:283
#27 0x00005618f9c56a77 in _PyObject_Vectorcall (kwnames=0x0, nargsf=15, args=0x7f49c65ec7b0, 
    callable=0x7f49ce218ee0) at ./Include/cpython/abstract.h:127
#28 method_vectorcall (method=method@entry=0x7f49cc93a300, args=<optimized out>, nargsf=nargsf@entry=14, 
    kwnames=0x0) at Objects/classobject.c:89
#29 0x00005618f9a9608f in PyVectorcall_Call (callable=0x7f49cc93a300, tuple=<optimized out>, 
    kwargs=<optimized out>) at Objects/call.c:199
#30 0x00005618f9a7d4ce in do_call_core (kwdict=0x7f49c65e3140, callargs=0x7f49c65d15e0, 
    func=0x7f49cc93a300, tstate=0x5618fe573660) at Python/ceval.c:5034
#31 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3559
#32 0x00005618f9a79b17 in function_code_fastcall (co=<optimized out>, args=<optimized out>, nargs=1, 
    globals=<optimized out>) at Objects/call.c:283
#33 0x00005618f9a804e2 in _PyObject_Vectorcall (kwnames=<optimized out>, nargsf=<optimized out>, 
    args=<optimized out>, callable=<optimized out>) at ./Include/cpython/abstract.h:127
#34 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, tstate=0x5618fe573660)
    at Python/ceval.c:4987
#35 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3486
#36 0x00005618f9a79b17 in function_code_fastcall (co=<optimized out>, args=<optimized out>, nargs=1, 
    globals=<optimized out>) at Objects/call.c:283
#37 0x00005618f9a804e2 in _PyObject_Vectorcall (kwnames=<optimized out>, nargsf=<optimized out>, 
    args=<optimized out>, callable=<optimized out>) at ./Include/cpython/abstract.h:127
#38 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, tstate=0x5618fe573660)
    at Python/ceval.c:4987
#39 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3486
#40 0x00005618f9a79b17 in function_code_fastcall (co=<optimized out>, args=<optimized out>, nargs=1, 
    globals=<optimized out>) at Objects/call.c:283
#41 0x00005618f9c56b24 in _PyObject_Vectorcall (kwnames=0x0, nargsf=1, args=0x7da596ffcdf8, 
    callable=0x7f49d266bca0) at ./Include/cpython/abstract.h:127
#42 method_vectorcall (method=method@entry=0x7f49c67992c0, args=<optimized out>, nargsf=nargsf@entry=0, 
    kwnames=0x0) at Objects/classobject.c:67
#43 0x00005618f9a9608f in PyVectorcall_Call (callable=0x7f49c67992c0, tuple=<optimized out>, 
    kwargs=<optimized out>) at Objects/call.c:199
#44 0x00005618f9c15dba in t_bootstrap (boot_raw=boot_raw@entry=0x7f49c67c65a0)
    at ./Modules/_threadmodule.c:1002
#45 0x00005618f9bb7c77 in pythread_wrapper (arg=<optimized out>) at Python/thread_pthread.h:232
#46 0x00007f49d3e316db in start_thread (arg=0x7da596ffd700) at pthread_create.c:463
#47 0x00007f49d33b588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 19 (Thread 0x7da5977fe700 (LWP 5940)):
#0  0x00007f49d3e3a6d6 in futex_abstimed_wait_cancelable (private=0, abstime=0x0, expected=0, 
    futex_word=0x5618ff0b68a0) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
#1  do_futex_wait (sem=sem@entry=0x5618ff0b68a0, abstime=0x0) at sem_waitcommon.c:111
#2  0x00007f49d3e3a7c8 in __new_sem_wait_slow (sem=sem@entry=0x5618ff0b68a0, abstime=0x0)
    at sem_waitcommon.c:181
#3  0x00007f49d3e3a839 in __new_sem_wait (sem=sem@entry=0x5618ff0b68a0) at sem_wait.c:42
#4  0x00005618f9bb82fe in PyThread_acquire_lock_timed (lock=0x5618ff0b68a0, 
    microseconds=microseconds@entry=-1, intr_flag=intr_flag@entry=1) at Python/thread_pthread.h:459
#5  0x00007f49ce25f8e4 in _queue_SimpleQueue_get_impl (timeout=<optimized out>, block=<optimized out>, 
    self=<optimized out>) at /tmp/python-build.20200430201249.17277/Python-3.8.2/Modules/_queuemodule.c:222
#6  _queue_SimpleQueue_get (self=0x7f49c65e43b0, args=<optimized out>, nargs=<optimized out>, 
    kwnames=<optimized out>)
    at /tmp/python-build.20200430201249.17277/Python-3.8.2/Modules/clinic/_queuemodule.c.h:171
#7  0x00005618f9adf9fd in cfunction_vectorcall_FASTCALL_KEYWORDS (func=0x7f49c65f6b30, 
    args=<optimized out>, nargsf=<optimized out>, kwnames=<optimized out>) at Objects/methodobject.c:436
#8  0x00005618f9a80bbe in _PyObject_Vectorcall (kwnames=<optimized out>, nargsf=<optimized out>, 
    args=<optimized out>, callable=<optimized out>) at ./Include/cpython/abstract.h:127
#9  call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, tstate=0x5618fe5738b0)
    at Python/ceval.c:4987
#10 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3500
#11 0x00005618f9b575c0 in PyEval_EvalFrameEx (throwflag=0, f=0x7d9174000d80) at Python/ceval.c:741
#12 _PyEval_EvalCodeWithName (_co=<optimized out>, globals=<optimized out>, locals=locals@entry=0x0, 
    args=<optimized out>, argcount=6, kwnames=0x0, kwargs=0x7f49c65eac88, kwcount=0, kwstep=1, 
    defs=0x7f49ce1f5dc8, defcount=4, kwdefs=0x0, closure=0x0, name=0x7f49ce1ed0f0, qualname=0x7f49ce1ed0f0)
    at Python/ceval.c:4298
#13 0x00005618f9a93172 in _PyFunction_Vectorcall (func=func@entry=0x7f49ce21ad30, stack=<optimized out>, 
    nargsf=nargsf@entry=6, kwnames=<optimized out>) at Objects/call.c:435
#14 0x00005618f9a9608f in PyVectorcall_Call (callable=0x7f49ce21ad30, tuple=<optimized out>, 
    kwargs=<optimized out>) at Objects/call.c:199
#15 0x00005618f9a7d4ce in do_call_core (kwdict=0x7f49c65de800, callargs=0x7f49c65eac40, 
    func=0x7f49ce21ad30, tstate=0x5618fe5738b0) at Python/ceval.c:5034
#16 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3559
#17 0x00005618f9a79b17 in function_code_fastcall (co=<optimized out>, args=<optimized out>, nargs=1, 
    globals=<optimized out>) at Objects/call.c:283
#18 0x00005618f9a804e2 in _PyObject_Vectorcall (kwnames=<optimized out>, nargsf=<optimized out>, 
    args=<optimized out>, callable=<optimized out>) at ./Include/cpython/abstract.h:127
#19 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, tstate=0x5618fe5738b0)
    at Python/ceval.c:4987
#20 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3486
#21 0x00005618f9a79b17 in function_code_fastcall (co=<optimized out>, args=<optimized out>, nargs=1, 
    globals=<optimized out>) at Objects/call.c:283
#22 0x00005618f9a804e2 in _PyObject_Vectorcall (kwnames=<optimized out>, nargsf=<optimized out>, 
    args=<optimized out>, callable=<optimized out>) at ./Include/cpython/abstract.h:127
#23 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, tstate=0x5618fe5738b0)
    at Python/ceval.c:4987
#24 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3486
#25 0x00005618f9a79b17 in function_code_fastcall (co=<optimized out>, args=<optimized out>, nargs=1, 
    globals=<optimized out>) at Objects/call.c:283
#26 0x00005618f9c56b24 in _PyObject_Vectorcall (kwnames=0x0, nargsf=1, args=0x7da5977fddf8, 
    callable=0x7f49d266bca0) at ./Include/cpython/abstract.h:127
#27 method_vectorcall (method=method@entry=0x7f49c6c60b80, args=<optimized out>, nargsf=nargsf@entry=0, 
    kwnames=0x0) at Objects/classobject.c:67
#28 0x00005618f9a9608f in PyVectorcall_Call (callable=0x7f49c6c60b80, tuple=<optimized out>, 
    kwargs=<optimized out>) at Objects/call.c:199
#29 0x00005618f9c15dba in t_bootstrap (boot_raw=boot_raw@entry=0x7f49c67c6660)
    at ./Modules/_threadmodule.c:1002
#30 0x00005618f9bb7c77 in pythread_wrapper (arg=<optimized out>) at Python/thread_pthread.h:232
#31 0x00007f49d3e316db in start_thread (arg=0x7da5977fe700) at pthread_create.c:463
#32 0x00007f49d33b588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 18 (Thread 0x7da597fff700 (LWP 5939)):
#0  0x00007f49d3e3a6d6 in futex_abstimed_wait_cancelable (private=0, abstime=0x0, expected=0, 
    futex_word=0x5618ff0b68a0) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
#1  do_futex_wait (sem=sem@entry=0x5618ff0b68a0, abstime=0x0) at sem_waitcommon.c:111
#2  0x00007f49d3e3a7c8 in __new_sem_wait_slow (sem=sem@entry=0x5618ff0b68a0, abstime=0x0)
    at sem_waitcommon.c:181
#3  0x00007f49d3e3a839 in __new_sem_wait (sem=sem@entry=0x5618ff0b68a0) at sem_wait.c:42
#4  0x00005618f9bb82fe in PyThread_acquire_lock_timed (lock=0x5618ff0b68a0, 
    microseconds=microseconds@entry=-1, intr_flag=intr_flag@entry=1) at Python/thread_pthread.h:459
#5  0x00007f49ce25f8e4 in _queue_SimpleQueue_get_impl (timeout=<optimized out>, block=<optimized out>, 
    self=<optimized out>) at /tmp/python-build.20200430201249.17277/Python-3.8.2/Modules/_queuemodule.c:222
#6  _queue_SimpleQueue_get (self=0x7f49c65e43b0, args=<optimized out>, nargs=<optimized out>, 
    kwnames=<optimized out>)
    at /tmp/python-build.20200430201249.17277/Python-3.8.2/Modules/clinic/_queuemodule.c.h:171
#7  0x00005618f9adf9fd in cfunction_vectorcall_FASTCALL_KEYWORDS (func=0x7f49c65f68b0, 
    args=<optimized out>, nargsf=<optimized out>, kwnames=<optimized out>) at Objects/methodobject.c:436
#8  0x00005618f9a80bbe in _PyObject_Vectorcall (kwnames=<optimized out>, nargsf=<optimized out>, 
    args=<optimized out>, callable=<optimized out>) at ./Include/cpython/abstract.h:127
#9  call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, tstate=0x5618fa93a660)
    at Python/ceval.c:4987
#10 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3500
#11 0x00005618f9b575c0 in PyEval_EvalFrameEx (throwflag=0, f=0x7d9170000d80) at Python/ceval.c:741
#12 _PyEval_EvalCodeWithName (_co=<optimized out>, globals=<optimized out>, locals=locals@entry=0x0, 
    args=<optimized out>, argcount=6, kwnames=0x0, kwargs=0x7f49c65eabc8, kwcount=0, kwstep=1, 
    defs=0x7f49ce1f5dc8, defcount=4, kwdefs=0x0, closure=0x0, name=0x7f49ce1ed0f0, qualname=0x7f49ce1ed0f0)
    at Python/ceval.c:4298
#13 0x00005618f9a93172 in _PyFunction_Vectorcall (func=func@entry=0x7f49ce21ad30, stack=<optimized out>, 
    nargsf=nargsf@entry=6, kwnames=<optimized out>) at Objects/call.c:435
#14 0x00005618f9a9608f in PyVectorcall_Call (callable=0x7f49ce21ad30, tuple=<optimized out>, 
    kwargs=<optimized out>) at Objects/call.c:199
#15 0x00005618f9a7d4ce in do_call_core (kwdict=0x7f49c65de800, callargs=0x7f49c65eab80, 
    func=0x7f49ce21ad30, tstate=0x5618fa93a660) at Python/ceval.c:5034
#16 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3559
#17 0x00005618f9a79b17 in function_code_fastcall (co=<optimized out>, args=<optimized out>, nargs=1, 
    globals=<optimized out>) at Objects/call.c:283
#18 0x00005618f9a804e2 in _PyObject_Vectorcall (kwnames=<optimized out>, nargsf=<optimized out>, 
    args=<optimized out>, callable=<optimized out>) at ./Include/cpython/abstract.h:127
#19 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, tstate=0x5618fa93a660)
    at Python/ceval.c:4987
#20 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3486
#21 0x00005618f9a79b17 in function_code_fastcall (co=<optimized out>, args=<optimized out>, nargs=1, 
    globals=<optimized out>) at Objects/call.c:283
#22 0x00005618f9a804e2 in _PyObject_Vectorcall (kwnames=<optimized out>, nargsf=<optimized out>, 
    args=<optimized out>, callable=<optimized out>) at ./Include/cpython/abstract.h:127
#23 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, tstate=0x5618fa93a660)
    at Python/ceval.c:4987
#24 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3486
#25 0x00005618f9a79b17 in function_code_fastcall (co=<optimized out>, args=<optimized out>, nargs=1, 
    globals=<optimized out>) at Objects/call.c:283
#26 0x00005618f9c56b24 in _PyObject_Vectorcall (kwnames=0x0, nargsf=1, args=0x7da597ffedf8, 
    callable=0x7f49d266bca0) at ./Include/cpython/abstract.h:127
#27 method_vectorcall (method=method@entry=0x7f49c6c60b40, args=<optimized out>, nargsf=nargsf@entry=0, 
    kwnames=0x0) at Objects/classobject.c:67
#28 0x00005618f9a9608f in PyVectorcall_Call (callable=0x7f49c6c60b40, tuple=<optimized out>, 
    kwargs=<optimized out>) at Objects/call.c:199
#29 0x00005618f9c15dba in t_bootstrap (boot_raw=boot_raw@entry=0x7f49c67c6f60)
    at ./Modules/_threadmodule.c:1002
#30 0x00005618f9bb7c77 in pythread_wrapper (arg=<optimized out>) at Python/thread_pthread.h:232
#31 0x00007f49d3e316db in start_thread (arg=0x7da597fff700) at pthread_create.c:463
#32 0x00007f49d33b588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 17 (Thread 0x7da59cbe8700 (LWP 5938)):
#0  0x00007f49d3e3a6d6 in futex_abstimed_wait_cancelable (private=0, abstime=0x0, expected=0, 
    futex_word=0x5618ff0b68a0) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
#1  do_futex_wait (sem=sem@entry=0x5618ff0b68a0, abstime=0x0) at sem_waitcommon.c:111
#2  0x00007f49d3e3a7c8 in __new_sem_wait_slow (sem=sem@entry=0x5618ff0b68a0, abstime=0x0)
    at sem_waitcommon.c:181
#3  0x00007f49d3e3a839 in __new_sem_wait (sem=sem@entry=0x5618ff0b68a0) at sem_wait.c:42
#4  0x00005618f9bb82fe in PyThread_acquire_lock_timed (lock=0x5618ff0b68a0, 
    microseconds=microseconds@entry=-1, intr_flag=intr_flag@entry=1) at Python/thread_pthread.h:459
#5  0x00007f49ce25f8e4 in _queue_SimpleQueue_get_impl (timeout=<optimized out>, block=<optimized out>, 
    self=<optimized out>) at /tmp/python-build.20200430201249.17277/Python-3.8.2/Modules/_queuemodule.c:222
#6  _queue_SimpleQueue_get (self=0x7f49c65e43b0, args=<optimized out>, nargs=<optimized out>, 
    kwnames=<optimized out>)
    at /tmp/python-build.20200430201249.17277/Python-3.8.2/Modules/clinic/_queuemodule.c.h:171
#7  0x00005618f9adf9fd in cfunction_vectorcall_FASTCALL_KEYWORDS (func=0x7f49c65f6630, 
    args=<optimized out>, nargsf=<optimized out>, kwnames=<optimized out>) at Objects/methodobject.c:436
#8  0x00005618f9a80bbe in _PyObject_Vectorcall (kwnames=<optimized out>, nargsf=<optimized out>, 
    args=<optimized out>, callable=<optimized out>) at ./Include/cpython/abstract.h:127
#9  call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, tstate=0x5618fee93640)
    at Python/ceval.c:4987
#10 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3500
#11 0x00005618f9b575c0 in PyEval_EvalFrameEx (throwflag=0, f=0x7d917c000d80) at Python/ceval.c:741
#12 _PyEval_EvalCodeWithName (_co=<optimized out>, globals=<optimized out>, locals=locals@entry=0x0, 
    args=<optimized out>, argcount=6, kwnames=0x0, kwargs=0x7f49c65ea5c8, kwcount=0, kwstep=1, 
    defs=0x7f49ce1f5dc8, defcount=4, kwdefs=0x0, closure=0x0, name=0x7f49ce1ed0f0, qualname=0x7f49ce1ed0f0)
    at Python/ceval.c:4298
#13 0x00005618f9a93172 in _PyFunction_Vectorcall (func=func@entry=0x7f49ce21ad30, stack=<optimized out>, 
    nargsf=nargsf@entry=6, kwnames=<optimized out>) at Objects/call.c:435
#14 0x00005618f9a9608f in PyVectorcall_Call (callable=0x7f49ce21ad30, tuple=<optimized out>, 
    kwargs=<optimized out>) at Objects/call.c:199
#15 0x00005618f9a7d4ce in do_call_core (kwdict=0x7f49c65de800, callargs=0x7f49c65ea580, 
    func=0x7f49ce21ad30, tstate=0x5618fee93640) at Python/ceval.c:5034
#16 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3559
#17 0x00005618f9a79b17 in function_code_fastcall (co=<optimized out>, args=<optimized out>, nargs=1, 
    globals=<optimized out>) at Objects/call.c:283
#18 0x00005618f9a804e2 in _PyObject_Vectorcall (kwnames=<optimized out>, nargsf=<optimized out>, 
    args=<optimized out>, callable=<optimized out>) at ./Include/cpython/abstract.h:127
#19 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, tstate=0x5618fee93640)
    at Python/ceval.c:4987
#20 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3486
#21 0x00005618f9a79b17 in function_code_fastcall (co=<optimized out>, args=<optimized out>, nargs=1, 
    globals=<optimized out>) at Objects/call.c:283
#22 0x00005618f9a804e2 in _PyObject_Vectorcall (kwnames=<optimized out>, nargsf=<optimized out>, 
    args=<optimized out>, callable=<optimized out>) at ./Include/cpython/abstract.h:127
#23 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, tstate=0x5618fee93640)
    at Python/ceval.c:4987
#24 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3486
#25 0x00005618f9a79b17 in function_code_fastcall (co=<optimized out>, args=<optimized out>, nargs=1, 
    globals=<optimized out>) at Objects/call.c:283
#26 0x00005618f9c56b24 in _PyObject_Vectorcall (kwnames=0x0, nargsf=1, args=0x7da59cbe7df8, 
    callable=0x7f49d266bca0) at ./Include/cpython/abstract.h:127
#27 method_vectorcall (method=method@entry=0x7f49cc9104c0, args=<optimized out>, nargsf=nargsf@entry=0, 
    kwnames=0x0) at Objects/classobject.c:67
#28 0x00005618f9a9608f in PyVectorcall_Call (callable=0x7f49cc9104c0, tuple=<optimized out>, 
    kwargs=<optimized out>) at Objects/call.c:199
#29 0x00005618f9c15dba in t_bootstrap (boot_raw=boot_raw@entry=0x7f49c67c3300)
    at ./Modules/_threadmodule.c:1002
#30 0x00005618f9bb7c77 in pythread_wrapper (arg=<optimized out>) at Python/thread_pthread.h:232
#31 0x00007f49d3e316db in start_thread (arg=0x7da59cbe8700) at pthread_create.c:463
#32 0x00007f49d33b588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 16 (Thread 0x7da59d3e9700 (LWP 5937)):
#0  0x00007f49d3e3a6d6 in futex_abstimed_wait_cancelable (private=0, abstime=0x0, expected=0, 
    futex_word=0x5618ff0b68a0) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
#1  do_futex_wait (sem=sem@entry=0x5618ff0b68a0, abstime=0x0) at sem_waitcommon.c:111
#2  0x00007f49d3e3a7c8 in __new_sem_wait_slow (sem=sem@entry=0x5618ff0b68a0, abstime=0x0)
    at sem_waitcommon.c:181
#3  0x00007f49d3e3a839 in __new_sem_wait (sem=sem@entry=0x5618ff0b68a0) at sem_wait.c:42
#4  0x00005618f9bb82fe in PyThread_acquire_lock_timed (lock=0x5618ff0b68a0, 
    microseconds=microseconds@entry=-1, intr_flag=intr_flag@entry=1) at Python/thread_pthread.h:459
#5  0x00007f49ce25f8e4 in _queue_SimpleQueue_get_impl (timeout=<optimized out>, block=<optimized out>, 
    self=<optimized out>) at /tmp/python-build.20200430201249.17277/Python-3.8.2/Modules/_queuemodule.c:222
#6  _queue_SimpleQueue_get (self=0x7f49c65e43b0, args=<optimized out>, nargs=<optimized out>, 
    kwnames=<optimized out>)
    at /tmp/python-build.20200430201249.17277/Python-3.8.2/Modules/clinic/_queuemodule.c.h:171
#7  0x00005618f9adf9fd in cfunction_vectorcall_FASTCALL_KEYWORDS (func=0x7f49c65f6400, 
    args=<optimized out>, nargsf=<optimized out>, kwnames=<optimized out>) at Objects/methodobject.c:436
#8  0x00005618f9a80bbe in _PyObject_Vectorcall (kwnames=<optimized out>, nargsf=<optimized out>, 
    args=<optimized out>, callable=<optimized out>) at ./Include/cpython/abstract.h:127
#9  call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, tstate=0x5618fe63dc50)
    at Python/ceval.c:4987
#10 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3500
#11 0x00005618f9b575c0 in PyEval_EvalFrameEx (throwflag=0, f=0x7d9178000b60) at Python/ceval.c:741
#12 _PyEval_EvalCodeWithName (_co=<optimized out>, globals=<optimized out>, locals=locals@entry=0x0, 
    args=<optimized out>, argcount=6, kwnames=0x0, kwargs=0x7f49c65ea448, kwcount=0, kwstep=1, 
    defs=0x7f49ce1f5dc8, defcount=4, kwdefs=0x0, closure=0x0, name=0x7f49ce1ed0f0, qualname=0x7f49ce1ed0f0)
    at Python/ceval.c:4298
#13 0x00005618f9a93172 in _PyFunction_Vectorcall (func=func@entry=0x7f49ce21ad30, stack=<optimized out>, 
    nargsf=nargsf@entry=6, kwnames=<optimized out>) at Objects/call.c:435
#14 0x00005618f9a9608f in PyVectorcall_Call (callable=0x7f49ce21ad30, tuple=<optimized out>, 
    kwargs=<optimized out>) at Objects/call.c:199
#15 0x00005618f9a7d4ce in do_call_core (kwdict=0x7f49c65de800, callargs=0x7f49c65ea400, 
    func=0x7f49ce21ad30, tstate=0x5618fe63dc50) at Python/ceval.c:5034
#16 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3559
#17 0x00005618f9a79b17 in function_code_fastcall (co=<optimized out>, args=<optimized out>, nargs=1, 
    globals=<optimized out>) at Objects/call.c:283
#18 0x00005618f9a804e2 in _PyObject_Vectorcall (kwnames=<optimized out>, nargsf=<optimized out>, 
    args=<optimized out>, callable=<optimized out>) at ./Include/cpython/abstract.h:127
#19 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, tstate=0x5618fe63dc50)
    at Python/ceval.c:4987
#20 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3486
#21 0x00005618f9a79b17 in function_code_fastcall (co=<optimized out>, args=<optimized out>, nargs=1, 
    globals=<optimized out>) at Objects/call.c:283
#22 0x00005618f9a804e2 in _PyObject_Vectorcall (kwnames=<optimized out>, nargsf=<optimized out>, 
    args=<optimized out>, callable=<optimized out>) at ./Include/cpython/abstract.h:127
#23 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, tstate=0x5618fe63dc50)
    at Python/ceval.c:4987
#24 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3486
#25 0x00005618f9a79b17 in function_code_fastcall (co=<optimized out>, args=<optimized out>, nargs=1, 
    globals=<optimized out>) at Objects/call.c:283
#26 0x00005618f9c56b24 in _PyObject_Vectorcall (kwnames=0x0, nargsf=1, args=0x7da59d3e8df8, 
    callable=0x7f49d266bca0) at ./Include/cpython/abstract.h:127
#27 method_vectorcall (method=method@entry=0x7f49c779e8c0, args=<optimized out>, nargsf=nargsf@entry=0, 
    kwnames=0x0) at Objects/classobject.c:67
#28 0x00005618f9a9608f in PyVectorcall_Call (callable=0x7f49c779e8c0, tuple=<optimized out>, 
    kwargs=<optimized out>) at Objects/call.c:199
#29 0x00005618f9c15dba in t_bootstrap (boot_raw=boot_raw@entry=0x7f49c67bf030)
    at ./Modules/_threadmodule.c:1002
#30 0x00005618f9bb7c77 in pythread_wrapper (arg=<optimized out>) at Python/thread_pthread.h:232
#31 0x00007f49d3e316db in start_thread (arg=0x7da59d3e9700) at pthread_create.c:463
#32 0x00007f49d33b588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 15 (Thread 0x7da59d5ea700 (LWP 5936)):
#0  0x00007f49d3e37ed9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7da59d5e90e0, 
    expected=0, futex_word=0x5618fecab5e8) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  __pthread_cond_wait_common (abstime=0x7da59d5e91b8, mutex=0x5618ff0bd8f0, cond=0x5618fecab5c0)
    at pthread_cond_wait.c:533
#2  __pthread_cond_timedwait (cond=0x5618fecab5c0, mutex=0x5618ff0bd8f0, abstime=0x7da59d5e91b8)
    at pthread_cond_wait.c:667
#3  0x00007f49cb035331 in std::sys::unix::condvar::Condvar::wait_timeout ()
    at src/libstd/sys/unix/condvar.rs:100
#4  0x00007f49cb022092 in std::sys_common::condvar::Condvar::wait_timeout ()
    at src/libstd/sys_common/condvar.rs:61
#5  std::sync::condvar::Condvar::wait_timeout () at src/libstd/sync/condvar.rs:398
#6  std::thread::park_timeout () at src/libstd/thread/mod.rs:1014
#7  0x00007f49ca7a9dbb in crossbeam_channel::context::Context::wait_until (self=0x7da59d5e9720, 
    deadline=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/crossbeam-channel-0.3.9/src/context.rs:166
#8  0x00007f49ca7aaad2 in crossbeam_channel::flavors::list::Channel<T>::recv::{{closure}} (
    cx=0x7da59d5e9720)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/crossbeam-channel-0.3.9/src/flavors/list.rs:468
#9  crossbeam_channel::context::Context::with::{{closure}} (cx=0x7da59d5e9720)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/crossbeam-channel-0.3.9/src/context.rs:50
#10 0x00007f49ca87e8a9 in crossbeam_channel::context::Context::with::{{closure}} (cell=0x7d9184000cc0)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/crossbeam-channel-0.3.9/src/context.rs:58
#11 std::thread::local::LocalKey<T>::try_with (f=..., self=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/thread/local.rs:262
#12 crossbeam_channel::context::Context::with (f=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/crossbeam-channel-0.3.9/src/context.rs:53
#13 crossbeam_channel::flavors::list::Channel<T>::recv (self=<optimized out>, deadline=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/crossbeam-channel-0.3.9/src/flavors/list.rs:458
#14 crossbeam_channel::channel::Receiver<T>::recv_timeout (self=0x7da59d5e9cd0, timeout=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/crossbeam-channel-0.3.9/src/channel.rs:787
#15 watch::InvalidationWatcher::start_background_thread::{{closure}} ()
    at /src/pants/src/rust/engine/watch/src/lib.rs:152
#16 0x00007f49ca7ab607 in std::sys_common::backtrace::__rust_begin_short_backtrace (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/sys_common/backtrace.rs:130
#17 0x00007f49ca7bbd97 in std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}} ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/thread/mod.rs:475
#18 <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once (self=..., 
    _args=<optimized out>) at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panic.rs:318
#19 std::panicking::try::do_call (data=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panicking.rs:303
#20 0x00007f49cb03ce37 in __rust_maybe_catch_panic () at src/libpanic_unwind/lib.rs:86
#21 0x00007f49ca7e989d in std::panicking::try (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panicking.rs:281
#22 std::panic::catch_unwind (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panic.rs:394
#23 std::thread::Builder::spawn_unchecked::{{closure}} ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/thread/mod.rs:474
#24 core::ops::function::FnOnce::call_once{{vtable-shim}} ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libcore/ops/function.rs:232
#25 0x00007f49cb020d9f in <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/liballoc/boxed.rs:1017
#26 0x00007f49cb03bfbd in <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/liballoc/boxed.rs:1017
#27 std::sys_common::thread::start_thread () at src/libstd/sys_common/thread.rs:13
#28 std::sys::unix::thread::Thread::new::thread_start () at src/libstd/sys/unix/thread.rs:80
#29 0x00007f49d3e316db in start_thread (arg=0x7da59d5ea700) at pthread_create.c:463
#30 0x00007f49d33b588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 14 (Thread 0x7da59d7eb700 (LWP 5935)):
#0  0x00007f49d33b5bb7 in epoll_wait (epfd=159, events=0x7d9180002300, maxevents=16, timeout=-1)
    at ../sysdeps/unix/sysv/linux/epoll_wait.c:30
#1  0x00007f49caf5d68f in mio::sys::unix::epoll::Selector::select (evts=0x7da59d7e9db8, awakener=..., 
    timeout=..., self=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/mio-0.6.22/src/sys/unix/epoll.rs:72
#2  mio::poll::Poll::poll2 (self=0x7da59d7e9e18, events=0x7da59d7e9db8, timeout=..., interruptible=false)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/mio-0.6.22/src/poll.rs:1178
#3  mio::poll::Poll::poll1 (self=0x7da59d7e9e18, events=0x7da59d7e9db8, timeout=..., interruptible=false)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/mio-0.6.22/src/poll.rs:1139
#4  0x00007f49caf5d2f3 in mio::poll::Poll::poll (self=0x7d9180002300, events=0x10, timeout=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/mio-0.6.22/src/poll.rs:1010
#5  0x00007f49caaf9d7b in notify::inotify::EventLoop::event_loop_thread (self=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/notify-5.0.0-pre.2/src/inotify.rs:139
#6  notify::inotify::EventLoop::run::{{closure}} ()
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/notify-5.0.0-pre.2/src/inotify.rs:132
#7  std::sys_common::backtrace::__rust_begin_short_backtrace (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/sys_common/backtrace.rs:130
#8  0x00007f49caafe256 in std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}} ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/thread/mod.rs:475
#9  <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once (self=..., 
    _args=<optimized out>) at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panic.rs:318
#10 std::panicking::try::do_call (data=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panicking.rs:303
#11 0x00007f49cb03ce37 in __rust_maybe_catch_panic () at src/libpanic_unwind/lib.rs:86
#12 0x00007f49caafe876 in std::panicking::try (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panicking.rs:281
#13 std::panic::catch_unwind (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panic.rs:394
#14 std::thread::Builder::spawn_unchecked::{{closure}} ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/thread/mod.rs:474
#15 core::ops::function::FnOnce::call_once{{vtable-shim}} ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libcore/ops/function.rs:232
#16 0x00007f49cb020d9f in <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/liballoc/boxed.rs:1017
#17 0x00007f49cb03bfbd in <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/liballoc/boxed.rs:1017
#18 std::sys_common::thread::start_thread () at src/libstd/sys_common/thread.rs:13
#19 std::sys::unix::thread::Thread::new::thread_start () at src/libstd/sys/unix/thread.rs:80
#20 0x00007f49d3e316db in start_thread (arg=0x7da59d7eb700) at pthread_create.c:463
#21 0x00007f49d33b588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7da59f9fc700 (LWP 5934)):
#0  0x00007f49d3e379f3 in futex_wait_cancelable (private=<optimized out>, expected=0, 
    futex_word=0x7da59f9fb910) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x5618fd48f820, cond=0x7da59f9fb8e8)
    at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=cond@entry=0x7da59f9fb8e8, mutex=mutex@entry=0x5618fd48f820)
    at pthread_cond_wait.c:655
#3  0x00007f49cacd86b2 in gpr_cv_wait (cv=cv@entry=0x7da59f9fb8e8, mu=0x5618fd48f820, abs_deadline=...)
    at /home/vagrant/.cache/pants/rust/cargo/git/checkouts/grpc-rs-b50c79747a664460/ed3afa3/grpc-sys/grpc/src/core/lib/gpr/sync_posix.cc:128
#4  0x00007f49cae51ec5 in begin_worker (deadline=9223372036854775807, worker_hdl=<optimized out>, 
    worker=0x7da59f9fb8e0, pollset=0x7da5880023c0)
    at /home/vagrant/.cache/pants/rust/cargo/git/checkouts/grpc-rs-b50c79747a664460/ed3afa3/grpc-sys/grpc/src/core/lib/iomgr/ev_epollex_linux.cc:1026
#5  pollset_work (pollset=0x7da5880023c0, worker_hdl=<optimized out>, deadline=9223372036854775807)
    at /home/vagrant/.cache/pants/rust/cargo/git/checkouts/grpc-rs-b50c79747a664460/ed3afa3/grpc-sys/grpc/src/core/lib/iomgr/ev_epollex_linux.cc:1124
#6  0x00007f49cacf4ff6 in cq_next (cq=0x7da588002300, deadline=..., reserved=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/git/checkouts/grpc-rs-b50c79747a664460/ed3afa3/grpc-sys/grpc/src/core/lib/surface/completion_queue.cc:1039
#7  0x00007f49cacd033d in grpcio::cq::CompletionQueue::next (self=0x7da59f9fbba0)
    at /home/vagrant/.cache/pants/rust/cargo/git/checkouts/grpc-rs-b50c79747a664460/ed3afa3/src/cq.rs:196
#8  grpcio::env::poll_queue (tx=...)
    at /home/vagrant/.cache/pants/rust/cargo/git/checkouts/grpc-rs-b50c79747a664460/ed3afa3/src/env.rs:20
#9  0x00007f49cb03ce37 in __rust_maybe_catch_panic () at src/libpanic_unwind/lib.rs:86
#10 0x00007f49cacc79e6 in std::panicking::try (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panicking.rs:281
#11 std::panic::catch_unwind (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panic.rs:394
#12 std::thread::Builder::spawn_unchecked::{{closure}} ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/thread/mod.rs:474
#13 core::ops::function::FnOnce::call_once{{vtable-shim}} ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libcore/ops/function.rs:232
#14 0x00007f49cb020d9f in <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/liballoc/boxed.rs:1017
#15 0x00007f49cb03bfbd in <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/liballoc/boxed.rs:1017
#16 std::sys_common::thread::start_thread () at src/libstd/sys_common/thread.rs:13
#17 std::sys::unix::thread::Thread::new::thread_start () at src/libstd/sys/unix/thread.rs:80
#18 0x00007f49d3e316db in start_thread (arg=0x7da59f9fc700) at pthread_create.c:463
#19 0x00007f49d33b588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7da59fbfd700 (LWP 5933)):
#0  0x00007f49d3e379f3 in futex_wait_cancelable (private=<optimized out>, expected=0, 
    futex_word=0x7da59fbfc910) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x5618fd48f820, cond=0x7da59fbfc8e8)
    at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=cond@entry=0x7da59fbfc8e8, mutex=mutex@entry=0x5618fd48f820)
    at pthread_cond_wait.c:655
#3  0x00007f49cacd86b2 in gpr_cv_wait (cv=cv@entry=0x7da59fbfc8e8, mu=0x5618fd48f820, abs_deadline=...)
    at /home/vagrant/.cache/pants/rust/cargo/git/checkouts/grpc-rs-b50c79747a664460/ed3afa3/grpc-sys/grpc/src/core/lib/gpr/sync_posix.cc:128
#4  0x00007f49cae51ec5 in begin_worker (deadline=9223372036854775807, worker_hdl=<optimized out>, 
    worker=0x7da59fbfc8e0, pollset=0x7da58c0023c0)
    at /home/vagrant/.cache/pants/rust/cargo/git/checkouts/grpc-rs-b50c79747a664460/ed3afa3/grpc-sys/grpc/src/core/lib/iomgr/ev_epollex_linux.cc:1026
#5  pollset_work (pollset=0x7da58c0023c0, worker_hdl=<optimized out>, deadline=9223372036854775807)
    at /home/vagrant/.cache/pants/rust/cargo/git/checkouts/grpc-rs-b50c79747a664460/ed3afa3/grpc-sys/grpc/src/core/lib/iomgr/ev_epollex_linux.cc:1124
#6  0x00007f49cacf4ff6 in cq_next (cq=0x7da58c002300, deadline=..., reserved=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/git/checkouts/grpc-rs-b50c79747a664460/ed3afa3/grpc-sys/grpc/src/core/lib/surface/completion_queue.cc:1039
#7  0x00007f49cacd033d in grpcio::cq::CompletionQueue::next (self=0x7da59fbfcba0)
    at /home/vagrant/.cache/pants/rust/cargo/git/checkouts/grpc-rs-b50c79747a664460/ed3afa3/src/cq.rs:196
#8  grpcio::env::poll_queue (tx=...)
    at /home/vagrant/.cache/pants/rust/cargo/git/checkouts/grpc-rs-b50c79747a664460/ed3afa3/src/env.rs:20
#9  0x00007f49cb03ce37 in __rust_maybe_catch_panic () at src/libpanic_unwind/lib.rs:86
#10 0x00007f49cacc79e6 in std::panicking::try (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panicking.rs:281
#11 std::panic::catch_unwind (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panic.rs:394
#12 std::thread::Builder::spawn_unchecked::{{closure}} ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/thread/mod.rs:474
#13 core::ops::function::FnOnce::call_once{{vtable-shim}} ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libcore/ops/function.rs:232
#14 0x00007f49cb020d9f in <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/liballoc/boxed.rs:1017
#15 0x00007f49cb03bfbd in <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/liballoc/boxed.rs:1017
#16 std::sys_common::thread::start_thread () at src/libstd/sys_common/thread.rs:13
#17 std::sys::unix::thread::Thread::new::thread_start () at src/libstd/sys/unix/thread.rs:80
#18 0x00007f49d3e316db in start_thread (arg=0x7da59fbfd700) at pthread_create.c:463
#19 0x00007f49d33b588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7da59fdfe700 (LWP 5932)):
#0  0x00007f49d3e379f3 in futex_wait_cancelable (private=<optimized out>, expected=0, 
    futex_word=0x7da59fdfd910) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x5618fd48f820, cond=0x7da59fdfd8e8)
    at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=cond@entry=0x7da59fdfd8e8, mutex=mutex@entry=0x5618fd48f820)
    at pthread_cond_wait.c:655
#3  0x00007f49cacd86b2 in gpr_cv_wait (cv=cv@entry=0x7da59fdfd8e8, mu=0x5618fd48f820, abs_deadline=...)
    at /home/vagrant/.cache/pants/rust/cargo/git/checkouts/grpc-rs-b50c79747a664460/ed3afa3/grpc-sys/grpc/src/core/lib/gpr/sync_posix.cc:128
#4  0x00007f49cae51ec5 in begin_worker (deadline=9223372036854775807, worker_hdl=<optimized out>, 
    worker=0x7da59fdfd8e0, pollset=0x7da5900023c0)
    at /home/vagrant/.cache/pants/rust/cargo/git/checkouts/grpc-rs-b50c79747a664460/ed3afa3/grpc-sys/grpc/src/core/lib/iomgr/ev_epollex_linux.cc:1026
#5  pollset_work (pollset=0x7da5900023c0, worker_hdl=<optimized out>, deadline=9223372036854775807)
    at /home/vagrant/.cache/pants/rust/cargo/git/checkouts/grpc-rs-b50c79747a664460/ed3afa3/grpc-sys/grpc/src/core/lib/iomgr/ev_epollex_linux.cc:1124
#6  0x00007f49cacf4ff6 in cq_next (cq=0x7da590002300, deadline=..., reserved=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/git/checkouts/grpc-rs-b50c79747a664460/ed3afa3/grpc-sys/grpc/src/core/lib/surface/completion_queue.cc:1039
#7  0x00007f49cacd033d in grpcio::cq::CompletionQueue::next (self=0x7da59fdfdba0)
    at /home/vagrant/.cache/pants/rust/cargo/git/checkouts/grpc-rs-b50c79747a664460/ed3afa3/src/cq.rs:196
#8  grpcio::env::poll_queue (tx=...)
    at /home/vagrant/.cache/pants/rust/cargo/git/checkouts/grpc-rs-b50c79747a664460/ed3afa3/src/env.rs:20
#9  0x00007f49cb03ce37 in __rust_maybe_catch_panic () at src/libpanic_unwind/lib.rs:86
#10 0x00007f49cacc79e6 in std::panicking::try (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panicking.rs:281
#11 std::panic::catch_unwind (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panic.rs:394
#12 std::thread::Builder::spawn_unchecked::{{closure}} ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/thread/mod.rs:474
#13 core::ops::function::FnOnce::call_once{{vtable-shim}} ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libcore/ops/function.rs:232
#14 0x00007f49cb020d9f in <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/liballoc/boxed.rs:1017
#15 0x00007f49cb03bfbd in <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/liballoc/boxed.rs:1017
#16 std::sys_common::thread::start_thread () at src/libstd/sys_common/thread.rs:13
#17 std::sys::unix::thread::Thread::new::thread_start () at src/libstd/sys/unix/thread.rs:80
#18 0x00007f49d3e316db in start_thread (arg=0x7da59fdfe700) at pthread_create.c:463
#19 0x00007f49d33b588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7da59ffff700 (LWP 5931)):
#0  0x00007f49d3e379f3 in futex_wait_cancelable (private=<optimized out>, expected=0, 
    futex_word=0x7da59fffe910) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x5618fd48f820, cond=0x7da59fffe8e8)
    at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=cond@entry=0x7da59fffe8e8, mutex=mutex@entry=0x5618fd48f820)
    at pthread_cond_wait.c:655
#3  0x00007f49cacd86b2 in gpr_cv_wait (cv=cv@entry=0x7da59fffe8e8, mu=0x5618fd48f820, abs_deadline=...)
    at /home/vagrant/.cache/pants/rust/cargo/git/checkouts/grpc-rs-b50c79747a664460/ed3afa3/grpc-sys/grpc/src/core/lib/gpr/sync_posix.cc:128
#4  0x00007f49cae51ec5 in begin_worker (deadline=9223372036854775807, worker_hdl=<optimized out>, 
    worker=0x7da59fffe8e0, pollset=0x7da5980023c0)
    at /home/vagrant/.cache/pants/rust/cargo/git/checkouts/grpc-rs-b50c79747a664460/ed3afa3/grpc-sys/grpc/src/core/lib/iomgr/ev_epollex_linux.cc:1026
#5  pollset_work (pollset=0x7da5980023c0, worker_hdl=<optimized out>, deadline=9223372036854775807)
    at /home/vagrant/.cache/pants/rust/cargo/git/checkouts/grpc-rs-b50c79747a664460/ed3afa3/grpc-sys/grpc/src/core/lib/iomgr/ev_epollex_linux.cc:1124
#6  0x00007f49cacf4ff6 in cq_next (cq=0x7da598002300, deadline=..., reserved=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/git/checkouts/grpc-rs-b50c79747a664460/ed3afa3/grpc-sys/grpc/src/core/lib/surface/completion_queue.cc:1039
#7  0x00007f49cacd033d in grpcio::cq::CompletionQueue::next (self=0x7da59fffeba0)
    at /home/vagrant/.cache/pants/rust/cargo/git/checkouts/grpc-rs-b50c79747a664460/ed3afa3/src/cq.rs:196
#8  grpcio::env::poll_queue (tx=...)
    at /home/vagrant/.cache/pants/rust/cargo/git/checkouts/grpc-rs-b50c79747a664460/ed3afa3/src/env.rs:20
#9  0x00007f49cb03ce37 in __rust_maybe_catch_panic () at src/libpanic_unwind/lib.rs:86
#10 0x00007f49cacc79e6 in std::panicking::try (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panicking.rs:281
#11 std::panic::catch_unwind (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panic.rs:394
#12 std::thread::Builder::spawn_unchecked::{{closure}} ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/thread/mod.rs:474
#13 core::ops::function::FnOnce::call_once{{vtable-shim}} ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libcore/ops/function.rs:232
#14 0x00007f49cb020d9f in <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/liballoc/boxed.rs:1017
#15 0x00007f49cb03bfbd in <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/liballoc/boxed.rs:1017
#16 std::sys_common::thread::start_thread () at src/libstd/sys_common/thread.rs:13
#17 std::sys::unix::thread::Thread::new::thread_start () at src/libstd/sys/unix/thread.rs:80
#18 0x00007f49d3e316db in start_thread (arg=0x7da59ffff700) at pthread_create.c:463
#19 0x00007f49d33b588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f49bc3ea700 (LWP 5930)):
#0  0x00007f49d33b5bb7 in epoll_wait (epfd=106, events=events@entry=0x5618fd48f858, 
    maxevents=maxevents@entry=100, timeout=timeout@entry=-1) at ../sysdeps/unix/sysv/linux/epoll_wait.c:30
#1  0x00007f49cae521e0 in pollable_epoll (deadline=<optimized out>, p=0x5618fd48f7b0)
    at /home/vagrant/.cache/pants/rust/cargo/git/checkouts/grpc-rs-b50c79747a664460/ed3afa3/grpc-sys/grpc/src/core/lib/iomgr/ev_epollex_linux.cc:941
#2  pollset_work (pollset=0x7da5a00023c0, worker_hdl=<optimized out>, deadline=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/git/checkouts/grpc-rs-b50c79747a664460/ed3afa3/grpc-sys/grpc/src/core/lib/iomgr/ev_epollex_linux.cc:1129
#3  0x00007f49cacf4ff6 in cq_next (cq=0x7da5a0002300, deadline=..., reserved=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/git/checkouts/grpc-rs-b50c79747a664460/ed3afa3/grpc-sys/grpc/src/core/lib/surface/completion_queue.cc:1039
#4  0x00007f49cacd033d in grpcio::cq::CompletionQueue::next (self=0x7f49bc3e9ba0)
    at /home/vagrant/.cache/pants/rust/cargo/git/checkouts/grpc-rs-b50c79747a664460/ed3afa3/src/cq.rs:196
#5  grpcio::env::poll_queue (tx=...)
    at /home/vagrant/.cache/pants/rust/cargo/git/checkouts/grpc-rs-b50c79747a664460/ed3afa3/src/env.rs:20
#6  0x00007f49cb03ce37 in __rust_maybe_catch_panic () at src/libpanic_unwind/lib.rs:86
#7  0x00007f49cacc79e6 in std::panicking::try (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panicking.rs:281
#8  std::panic::catch_unwind (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panic.rs:394
#9  std::thread::Builder::spawn_unchecked::{{closure}} ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/thread/mod.rs:474
#10 core::ops::function::FnOnce::call_once{{vtable-shim}} ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libcore/ops/function.rs:232
#11 0x00007f49cb020d9f in <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/liballoc/boxed.rs:1017
#12 0x00007f49cb03bfbd in <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/liballoc/boxed.rs:1017
#13 std::sys_common::thread::start_thread () at src/libstd/sys_common/thread.rs:13
#14 std::sys::unix::thread::Thread::new::thread_start () at src/libstd/sys/unix/thread.rs:80
#15 0x00007f49d3e316db in start_thread (arg=0x7f49bc3ea700) at pthread_create.c:463
#16 0x00007f49d33b588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f49bcbeb700 (LWP 5929)):
#0  0x00007f49d3e37ed9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7f49bcbeacd0, 
    expected=0, futex_word=0x7f49cb62f98c <g_cv_wait+44>) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  __pthread_cond_wait_common (abstime=0x7f49bcbead70, mutex=0x7f49cb62f9a0 <_ZL4g_mu>, 
    cond=0x7f49cb62f960 <g_cv_wait>) at pthread_cond_wait.c:533
#2  __pthread_cond_timedwait (cond=cond@entry=0x7f49cb62f960 <g_cv_wait>, 
    mutex=mutex@entry=0x7f49cb62f9a0 <_ZL4g_mu>, abstime=abstime@entry=0x7f49bcbead70)
    at pthread_cond_wait.c:667
#3  0x00007f49cacd8717 in gpr_cv_wait (cv=cv@entry=0x7f49cb62f960 <g_cv_wait>, 
    mu=mu@entry=0x7f49cb62f9a0 <_ZL4g_mu>, abs_deadline=...)
    at /home/vagrant/.cache/pants/rust/cargo/git/checkouts/grpc-rs-b50c79747a664460/ed3afa3/grpc-sys/grpc/src/core/lib/gpr/sync_posix.cc:144
#4  0x00007f49cace853d in wait_until (next=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/git/checkouts/grpc-rs-b50c79747a664460/ed3afa3/grpc-sys/grpc/src/core/lib/iomgr/timer_manager.cc:200
#5  timer_main_loop ()
    at /home/vagrant/.cache/pants/rust/cargo/git/checkouts/grpc-rs-b50c79747a664460/ed3afa3/grpc-sys/grpc/src/core/lib/iomgr/timer_manager.cc:255
#6  timer_thread (completed_thread_ptr=0x5618fb41da20)
    at /home/vagrant/.cache/pants/rust/cargo/git/checkouts/grpc-rs-b50c79747a664460/ed3afa3/grpc-sys/grpc/src/core/lib/iomgr/timer_manager.cc:284
#7  0x00007f49cada7d13 in grpc_core::(anonymous namespace)::ThreadInternalsPosix::<lambda(void*)>::operator() (__closure=0x0, v=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/git/checkouts/grpc-rs-b50c79747a664460/ed3afa3/grpc-sys/grpc/src/core/lib/gprpp/thd_posix.cc:140
#8  grpc_core::(anonymous namespace)::ThreadInternalsPosix::<lambda(void*)>::_FUN(void *) ()
    at /home/vagrant/.cache/pants/rust/cargo/git/checkouts/grpc-rs-b50c79747a664460/ed3afa3/grpc-sys/grpc/src/core/lib/gprpp/thd_posix.cc:145
#9  0x00007f49d3e316db in start_thread (arg=0x7f49bcbeb700) at pthread_create.c:463
#10 0x00007f49d33b588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f49bd3ec700 (LWP 5928)):
#0  0x00007f49d3e379f3 in futex_wait_cancelable (private=<optimized out>, expected=0, 
    futex_word=0x5618fd48f2c0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x5618fd48f260, cond=0x5618fd48f298)
    at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=cond@entry=0x5618fd48f298, mutex=mutex@entry=0x5618fd48f260)
    at pthread_cond_wait.c:655
#3  0x00007f49cacd86b2 in gpr_cv_wait (cv=cv@entry=0x5618fd48f298, mu=mu@entry=0x5618fd48f260, 
    abs_deadline=...)
    at /home/vagrant/.cache/pants/rust/cargo/git/checkouts/grpc-rs-b50c79747a664460/ed3afa3/grpc-sys/grpc/src/core/lib/gpr/sync_posix.cc:128
#4  0x00007f49cacdd46b in grpc_core::Executor::ThreadMain (arg=0x5618fd48f260)
    at /home/vagrant/.cache/pants/rust/cargo/git/checkouts/grpc-rs-b50c79747a664460/ed3afa3/grpc-sys/grpc/src/core/lib/iomgr/executor.cc:231
#5  0x00007f49cada7d13 in grpc_core::(anonymous namespace)::ThreadInternalsPosix::<lambda(void*)>::operator() (__closure=0x0, v=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/git/checkouts/grpc-rs-b50c79747a664460/ed3afa3/grpc-sys/grpc/src/core/lib/gprpp/thd_posix.cc:140
#6  grpc_core::(anonymous namespace)::ThreadInternalsPosix::<lambda(void*)>::_FUN(void *) ()
    at /home/vagrant/.cache/pants/rust/cargo/git/checkouts/grpc-rs-b50c79747a664460/ed3afa3/grpc-sys/grpc/src/core/lib/gprpp/thd_posix.cc:145
#7  0x00007f49d3e316db in start_thread (arg=0x7f49bd3ec700) at pthread_create.c:463
#8  0x00007f49d33b588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f49bdbed700 (LWP 5927)):
#0  0x00007f49d3e379f3 in futex_wait_cancelable (private=<optimized out>, expected=0, 
    futex_word=0x5618fd48ed70) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x5618fd48ed10, cond=0x5618fd48ed48)
    at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=cond@entry=0x5618fd48ed48, mutex=mutex@entry=0x5618fd48ed10)
    at pthread_cond_wait.c:655
#3  0x00007f49cacd86b2 in gpr_cv_wait (cv=cv@entry=0x5618fd48ed48, mu=mu@entry=0x5618fd48ed10, 
    abs_deadline=...)
    at /home/vagrant/.cache/pants/rust/cargo/git/checkouts/grpc-rs-b50c79747a664460/ed3afa3/grpc-sys/grpc/src/core/lib/gpr/sync_posix.cc:128
#4  0x00007f49cacdd46b in grpc_core::Executor::ThreadMain (arg=0x5618fd48ed10)
    at /home/vagrant/.cache/pants/rust/cargo/git/checkouts/grpc-rs-b50c79747a664460/ed3afa3/grpc-sys/grpc/src/core/lib/iomgr/executor.cc:231
#5  0x00007f49cada7d13 in grpc_core::(anonymous namespace)::ThreadInternalsPosix::<lambda(void*)>::operator() (__closure=0x0, v=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/git/checkouts/grpc-rs-b50c79747a664460/ed3afa3/grpc-sys/grpc/src/core/lib/gprpp/thd_posix.cc:140
#6  grpc_core::(anonymous namespace)::ThreadInternalsPosix::<lambda(void*)>::_FUN(void *) ()
    at /home/vagrant/.cache/pants/rust/cargo/git/checkouts/grpc-rs-b50c79747a664460/ed3afa3/grpc-sys/grpc/src/core/lib/gprpp/thd_posix.cc:145
#7  0x00007f49d3e316db in start_thread (arg=0x7f49bdbed700) at pthread_create.c:463
#8  0x00007f49d33b588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f49c5fc3700 (LWP 5926)):
#0  0x00007f49d3e379f3 in futex_wait_cancelable (private=<optimized out>, expected=0, 
    futex_word=0x7f49b8000bd0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x7f49b8000b80, cond=0x7f49b8000ba8)
    at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x7f49b8000ba8, mutex=0x7f49b8000b80) at pthread_cond_wait.c:655
#3  0x00007f49cb011408 in parking_lot_core::thread_parker::ThreadParker::park (self=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/parking_lot_core-0.3.1/src/thread_parker/unix.rs:95
#4  parking_lot_core::parking_lot::park_internal (key=<optimized out>, validate=..., before_sleep=..., 
    timed_out=..., park_token=..., timeout=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/parking_lot_core-0.3.1/src/parking_lot.rs:597
#5  0x00007f49cb00f524 in parking_lot_core::parking_lot::park (key=139954596350928, validate=..., 
    timed_out=..., park_token=..., before_sleep=..., timeout=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/parking_lot_core-0.3.1/src/parking_lot.rs:542
#6  parking_lot::raw_mutex::RawMutex::lock_slow (self=<optimized out>, timeout=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/parking_lot-0.6.4/src/raw_mutex.rs:235
#7  0x00007f49caf238ac in <parking_lot::raw_mutex::RawMutex as lock_api::mutex::RawMutex>::lock (
    self=0x7f49cb633660 <<logging::logger::LOGGER as core::ops::deref::Deref>::deref::__stability::LAZY+8>)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/parking_lot-0.6.4/src/raw_mutex.rs:54
#8  lock_api::mutex::Mutex<R,T>::lock (
    self=0x7f49cb633660 <<logging::logger::LOGGER as core::ops::deref::Deref>::deref::__stability::LAZY+8>)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/lock_api-0.1.5/src/mutex.rs:148
#9  <logging::logger::Logger as log::Log>::log (
    self=0x7f49cb633660 <<logging::logger::LOGGER as core::ops::deref::Deref>::deref::__stability::LAZY+8>, 
    record=0x7f49c5fbecf8) at logging/src/logger.rs:185
#10 0x00007f49cb015706 in log::__private_api_log (args=..., level=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/log-0.4.8/src/lib.rs:1393
#11 0x00007f49cae93249 in workunit_store::Workunit::log_workunit_state (self=<optimized out>)
    at workunit_store/src/lib.rs:88
#12 0x00007f49cae965bc in workunit_store::WorkunitStore::complete_workunit_impl (self=<optimized out>, 
    span_id=..., new_metadata=...) at workunit_store/src/lib.rs:293
#13 0x00007f49cae95e84 in workunit_store::WorkunitStore::complete_workunit (self=<optimized out>, 
    span_id=...) at workunit_store/src/lib.rs:265
#14 0x00007f49ca8610d2 in <engine::nodes::NodeKey as graph::node::Node>::run::__run::{{closure}}::{{closure}} () at src/nodes.rs:1074
#15 <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., cx=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#16 <tokio::task::task_local::TaskLocalFuture<T,F> as core::future::future::Future>::poll (self=..., 
    cx=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/task/task_local.rs:214
#17 std::future::poll_with_tls_context (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:102
#18 tokio::task::task_local::LocalKey<T>::scope::{{closure}} ()
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/task/task_local.rs:120
#19 0x00007f49ca8b9fd2 in <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., 
    cx=<optimized out>) at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#20 std::future::poll_with_tls_context (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:102
#21 workunit_store::scope_task_workunit_state::{{closure}} ()
    at /src/pants/src/rust/engine/workunit_store/src/lib.rs:481
#22 <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., cx=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#23 std::future::poll_with_tls_context (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:102
#24 <engine::nodes::NodeKey as graph::node::Node>::run::__run::{{closure}} () at src/nodes.rs:1044
#25 <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., cx=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#26 0x00007f49ca8ac26b in <core::pin::Pin<P> as core::future::future::Future>::poll (self=..., cx=0x0)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libcore/future/future.rs:118
#27 std::future::poll_with_tls_context (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:102
#28 graph::entry::Entry<N>::run::{{closure}} () at /src/pants/src/rust/engine/graph/src/entry.rs:323
#29 <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., cx=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#30 <tokio::task::task_local::TaskLocalFuture<T,F> as core::future::future::Future>::poll (self=..., 
    cx=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/task/task_local.rs:214
#31 std::future::poll_with_tls_context (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:102
#32 tokio::task::task_local::LocalKey<T>::scope::{{closure}} ()
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/task/task_local.rs:120
#33 <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., cx=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#34 std::future::poll_with_tls_context (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:102
#35 workunit_store::scope_task_workunit_state::{{closure}} ()
    at /src/pants/src/rust/engine/workunit_store/src/lib.rs:481
#36 <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., cx=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#37 std::future::poll_with_tls_context (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:102
#38 task_executor::Executor::future_with_correct_context::{{closure}} ()
    at /src/pants/src/rust/engine/task_executor/src/lib.rs:131
#39 <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., cx=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#40 <tokio::task::task_local::TaskLocalFuture<T,F> as core::future::future::Future>::poll (self=..., 
    cx=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/task/task_local.rs:214
#41 std::future::poll_with_tls_context (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:102
#42 tokio::task::task_local::LocalKey<T>::scope::{{closure}} ()
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/task/task_local.rs:120
#43 <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., cx=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#44 std::future::poll_with_tls_context (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:102
#45 logging::logger::scope_task_destination::{{closure}} ()
    at /src/pants/src/rust/engine/logging/src/logger.rs:322
#46 <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., cx=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#47 0x00007f49ca7bbe5f in tokio::runtime::task::core::Core<T,S>::poll::{{closure}} (ptr=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/core.rs:173
#48 tokio::loom::std::unsafe_cell::UnsafeCell<T>::with_mut (self=<optimized out>, f=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/loom/std/unsafe_cell.rs:14
#49 tokio::runtime::task::core::Core<T,S>::poll (self=<optimized out>, header=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/core.rs:158
#50 tokio::runtime::task::harness::Harness<T,S>::poll::{{closure}} ()
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/harness.rs:113
#51 core::ops::function::FnOnce::call_once ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libcore/ops/function.rs:232
#52 <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once (self=..., 
    _args=<optimized out>) at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panic.rs:318
#53 std::panicking::try::do_call (data=0x7f49c5fc28c0 "\260(\374\305I\177")
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panicking.rs:303
#54 0x00007f49cb03ce37 in __rust_maybe_catch_panic () at src/libpanic_unwind/lib.rs:86
#55 0x00007f49ca86a444 in std::panicking::try (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panicking.rs:281
#56 std::panic::catch_unwind (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panic.rs:394
#57 tokio::runtime::task::harness::Harness<T,S>::poll (self=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/harness.rs:89
#58 tokio::runtime::task::raw::poll (ptr=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/raw.rs:104
#59 0x00007f49caf4fd7b in tokio::runtime::task::raw::RawTask::poll (self=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/raw.rs:66
#60 tokio::runtime::task::Notified<S>::run (self=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/mod.rs:169
#61 tokio::runtime::thread_pool::worker::Context::run_task::{{closure}} ()
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/thread_pool/worker.rs:353
#62 0x00007f49caf4fca7 in tokio::coop::budget::{{closure}} (hits=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/coop.rs:97
#63 std::thread::local::LocalKey<T>::try_with (self=<optimized out>, f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/thread/local.rs:262
#64 std::thread::local::LocalKey<T>::with (f=..., self=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/thread/local.rs:239
#65 tokio::coop::budget (f=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/coop.rs:79
#66 tokio::runtime::thread_pool::worker::Context::run_task (self=<optimized out>, task=..., 
    core=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/thread_pool/worker.rs:352
#67 0x00007f49caf4ed97 in tokio::runtime::thread_pool::worker::Context::run (self=0x7f49c5fc2a48, 
    core=0x5618fafd8f20)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/thread_pool/worker.rs:324
#68 tokio::runtime::thread_pool::worker::run::{{closure}} ()
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/thread_pool/worker.rs:309
#69 tokio::macros::scoped_tls::ScopedKey<T>::set (t=0x7f49c5fc2a48, self=<optimized out>, f=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/macros/scoped_tls.rs:64
#70 tokio::runtime::thread_pool::worker::run (worker=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/thread_pool/worker.rs:306
#71 0x00007f49caf315b4 in tokio::runtime::thread_pool::worker::Launch::launch::{{closure}} ()
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/thread_pool/worker.rs:285
#72 <tokio::runtime::blocking::task::BlockingTask<T> as core::future::future::Future>::poll (self=..., 
    _cx=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/blocking/task.rs:38
#73 tokio::runtime::task::core::Core<T,S>::poll::{{closure}} (ptr=0x5618facb6790)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/core.rs:173
#74 tokio::loom::std::unsafe_cell::UnsafeCell<T>::with_mut (self=0x5618facb6790, f=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/loom/std/unsafe_cell.rs:14
#75 tokio::runtime::task::core::Core<T,S>::poll (self=0x5618facb6790, header=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/core.rs:158
#76 tokio::runtime::task::harness::Harness<T,S>::poll::{{closure}} ()
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/harness.rs:113
#77 core::ops::function::FnOnce::call_once ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libcore/ops/function.rs:232
#78 <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once (self=..., 
    _args=<optimized out>) at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panic.rs:318
#79 std::panicking::try::do_call (data=0x7f49c5fc2be0 "\320+\374\305I\177")
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panicking.rs:303
#80 0x00007f49cb03ce37 in __rust_maybe_catch_panic () at src/libpanic_unwind/lib.rs:86
#81 0x00007f49caf4a1cb in std::panicking::try (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panicking.rs:281
#82 std::panic::catch_unwind (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panic.rs:394
#83 tokio::runtime::task::harness::Harness<T,S>::poll (self=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/harness.rs:89
#84 tokio::runtime::task::raw::poll (ptr=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/raw.rs:104
#85 0x00007f49caf2f637 in tokio::runtime::task::raw::RawTask::poll (self=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/raw.rs:66
#86 tokio::runtime::task::Notified<S>::run (self=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/mod.rs:169
#87 tokio::runtime::blocking::pool::Inner::run (self=0x5618fabc9140)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/blocking/pool.rs:230
#88 tokio::runtime::blocking::pool::Spawner::spawn_thread::{{closure}}::{{closure}} ()
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/blocking/pool.rs:210
#89 tokio::runtime::context::enter (new=..., f=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/context.rs:72
#90 tokio::runtime::handle::Handle::enter (self=0x7f49c5fc2ce0, f=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/handle.rs:71
#91 tokio::runtime::blocking::pool::Spawner::spawn_thread::{{closure}} ()
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/blocking/pool.rs:209
#92 std::sys_common::backtrace::__rust_begin_short_backtrace (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/sys_common/backtrace.rs:130
#93 0x00007f49caf31505 in std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}} ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/thread/mod.rs:475
#94 <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once (self=..., 
    _args=<optimized out>) at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panic.rs:318
#95 std::panicking::try::do_call (data=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panicking.rs:303
#96 0x00007f49cb03ce37 in __rust_maybe_catch_panic () at src/libpanic_unwind/lib.rs:86
#97 0x00007f49caf3298a in std::panicking::try (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panicking.rs:281
#98 std::panic::catch_unwind (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panic.rs:394
#99 std::thread::Builder::spawn_unchecked::{{closure}} ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/thread/mod.rs:474
#100 core::ops::function::FnOnce::call_once{{vtable-shim}} ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libcore/ops/function.rs:232
#101 0x00007f49cb020d9f in <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/liballoc/boxed.rs:1017
#102 0x00007f49cb03bfbd in <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/liballoc/boxed.rs:1017
#103 std::sys_common::thread::start_thread () at src/libstd/sys_common/thread.rs:13
#104 std::sys::unix::thread::Thread::new::thread_start () at src/libstd/sys/unix/thread.rs:80
#105 0x00007f49d3e316db in start_thread (arg=0x7f49c5fc3700) at pthread_create.c:463
#106 0x00007f49d33b588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f49c61c4700 (LWP 5925)):
#0  0x00007f49d3e379f3 in futex_wait_cancelable (private=<optimized out>, expected=0, 
    futex_word=0x7f49b0000bd4) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x7f49b0000b80, cond=0x7f49b0000ba8)
    at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x7f49b0000ba8, mutex=0x7f49b0000b80) at pthread_cond_wait.c:655
#3  0x00007f49cb011408 in parking_lot_core::thread_parker::ThreadParker::park (self=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/parking_lot_core-0.3.1/src/thread_parker/unix.rs:95
#4  parking_lot_core::parking_lot::park_internal (key=<optimized out>, validate=..., before_sleep=..., 
    timed_out=..., park_token=..., timeout=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/parking_lot_core-0.3.1/src/parking_lot.rs:597
#5  0x00007f49cb00f524 in parking_lot_core::parking_lot::park (key=139954462133204, validate=..., 
    timed_out=..., park_token=..., before_sleep=..., timeout=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/parking_lot_core-0.3.1/src/parking_lot.rs:542
#6  parking_lot::raw_mutex::RawMutex::lock_slow (self=<optimized out>, timeout=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/parking_lot-0.6.4/src/raw_mutex.rs:235
#7  0x00007f49ca836d5c in <parking_lot::raw_mutex::RawMutex as lock_api::mutex::RawMutex>::lock (
    self=0x5618fe4a81c0)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/parking_lot-0.6.4/src/raw_mutex.rs:54
#8  lock_api::mutex::Mutex<R,T>::lock (self=0x5618fe4a81c0)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/lock_api-0.1.5/src/mutex.rs:148
#9  graph::Graph<N>::complete (self=0x5618fe4a81c0, context=0x7f49c0114248, entry_id=..., run_token=..., 
    result=...) at /src/pants/src/rust/engine/graph/src/lib.rs:776
#10 0x00007f49ca8ac368 in graph::entry::Entry<N>::run::{{closure}} ()
    at /src/pants/src/rust/engine/graph/src/entry.rs:324
#11 <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., cx=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#12 <tokio::task::task_local::TaskLocalFuture<T,F> as core::future::future::Future>::poll (self=..., 
    cx=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/task/task_local.rs:214
#13 std::future::poll_with_tls_context (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:102
#14 tokio::task::task_local::LocalKey<T>::scope::{{closure}} ()
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/task/task_local.rs:120
#15 <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., cx=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#16 std::future::poll_with_tls_context (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:102
#17 workunit_store::scope_task_workunit_state::{{closure}} ()
    at /src/pants/src/rust/engine/workunit_store/src/lib.rs:481
#18 <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., cx=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#19 std::future::poll_with_tls_context (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:102
#20 task_executor::Executor::future_with_correct_context::{{closure}} ()
    at /src/pants/src/rust/engine/task_executor/src/lib.rs:131
#21 <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., cx=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#22 <tokio::task::task_local::TaskLocalFuture<T,F> as core::future::future::Future>::poll (self=..., 
    cx=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/task/task_local.rs:214
#23 std::future::poll_with_tls_context (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:102
#24 tokio::task::task_local::LocalKey<T>::scope::{{closure}} ()
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/task/task_local.rs:120
#25 <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., cx=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#26 std::future::poll_with_tls_context (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:102
#27 logging::logger::scope_task_destination::{{closure}} ()
    at /src/pants/src/rust/engine/logging/src/logger.rs:322
#28 <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., cx=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#29 0x00007f49ca7bbe5f in tokio::runtime::task::core::Core<T,S>::poll::{{closure}} (ptr=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/core.rs:173
#30 tokio::loom::std::unsafe_cell::UnsafeCell<T>::with_mut (self=<optimized out>, f=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/loom/std/unsafe_cell.rs:14
#31 tokio::runtime::task::core::Core<T,S>::poll (self=<optimized out>, header=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/core.rs:158
#32 tokio::runtime::task::harness::Harness<T,S>::poll::{{closure}} ()
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/harness.rs:113
#33 core::ops::function::FnOnce::call_once ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libcore/ops/function.rs:232
#34 <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once (self=..., 
    _args=<optimized out>) at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panic.rs:318
#35 std::panicking::try::do_call (data=0x7f49c61c38c0 "\260\070\034\306I\177")
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panicking.rs:303
#36 0x00007f49cb03ce37 in __rust_maybe_catch_panic () at src/libpanic_unwind/lib.rs:86
#37 0x00007f49ca86a444 in std::panicking::try (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panicking.rs:281
#38 std::panic::catch_unwind (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panic.rs:394
#39 tokio::runtime::task::harness::Harness<T,S>::poll (self=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/harness.rs:89
#40 tokio::runtime::task::raw::poll (ptr=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/raw.rs:104
#41 0x00007f49caf4fd7b in tokio::runtime::task::raw::RawTask::poll (self=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/raw.rs:66
#42 tokio::runtime::task::Notified<S>::run (self=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/mod.rs:169
#43 tokio::runtime::thread_pool::worker::Context::run_task::{{closure}} ()
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/thread_pool/worker.rs:353
#44 0x00007f49caf4fca7 in tokio::coop::budget::{{closure}} (hits=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/coop.rs:97
#45 std::thread::local::LocalKey<T>::try_with (self=<optimized out>, f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/thread/local.rs:262
#46 std::thread::local::LocalKey<T>::with (f=..., self=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/thread/local.rs:239
#47 tokio::coop::budget (f=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/coop.rs:79
#48 tokio::runtime::thread_pool::worker::Context::run_task (self=<optimized out>, task=..., 
    core=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/thread_pool/worker.rs:352
#49 0x00007f49caf4ed97 in tokio::runtime::thread_pool::worker::Context::run (self=0x7f49c61c3a48, 
    core=0x5618fa623820)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/thread_pool/worker.rs:324
#50 tokio::runtime::thread_pool::worker::run::{{closure}} ()
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/thread_pool/worker.rs:309
#51 tokio::macros::scoped_tls::ScopedKey<T>::set (t=0x7f49c61c3a48, self=<optimized out>, f=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/macros/scoped_tls.rs:64
#52 tokio::runtime::thread_pool::worker::run (worker=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/thread_pool/worker.rs:306
#53 0x00007f49caf315b4 in tokio::runtime::thread_pool::worker::Launch::launch::{{closure}} ()
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/thread_pool/worker.rs:285
#54 <tokio::runtime::blocking::task::BlockingTask<T> as core::future::future::Future>::poll (self=..., 
    _cx=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/blocking/task.rs:38
#55 tokio::runtime::task::core::Core<T,S>::poll::{{closure}} (ptr=0x5618fab64440)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/core.rs:173
#56 tokio::loom::std::unsafe_cell::UnsafeCell<T>::with_mut (self=0x5618fab64440, f=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/loom/std/unsafe_cell.rs:14
#57 tokio::runtime::task::core::Core<T,S>::poll (self=0x5618fab64440, header=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/core.rs:158
#58 tokio::runtime::task::harness::Harness<T,S>::poll::{{closure}} ()
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/harness.rs:113
#59 core::ops::function::FnOnce::call_once ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libcore/ops/function.rs:232
#60 <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once (self=..., 
    _args=<optimized out>) at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panic.rs:318
#61 std::panicking::try::do_call (data=0x7f49c61c3be0 "\320;\034\306I\177")
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panicking.rs:303
#62 0x00007f49cb03ce37 in __rust_maybe_catch_panic () at src/libpanic_unwind/lib.rs:86
#63 0x00007f49caf4a1cb in std::panicking::try (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panicking.rs:281
#64 std::panic::catch_unwind (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panic.rs:394
#65 tokio::runtime::task::harness::Harness<T,S>::poll (self=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/harness.rs:89
#66 tokio::runtime::task::raw::poll (ptr=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/raw.rs:104
#67 0x00007f49caf2f637 in tokio::runtime::task::raw::RawTask::poll (self=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/raw.rs:66
#68 tokio::runtime::task::Notified<S>::run (self=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/mod.rs:169
#69 tokio::runtime::blocking::pool::Inner::run (self=0x5618fabc9140)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/blocking/pool.rs:230
#70 tokio::runtime::blocking::pool::Spawner::spawn_thread::{{closure}}::{{closure}} ()
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/blocking/pool.rs:210
#71 tokio::runtime::context::enter (new=..., f=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/context.rs:72
#72 tokio::runtime::handle::Handle::enter (self=0x7f49c61c3ce0, f=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/handle.rs:71
#73 tokio::runtime::blocking::pool::Spawner::spawn_thread::{{closure}} ()
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/blocking/pool.rs:209
#74 std::sys_common::backtrace::__rust_begin_short_backtrace (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/sys_common/backtrace.rs:130
#75 0x00007f49caf31505 in std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}} ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/thread/mod.rs:475
#76 <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once (self=..., 
    _args=<optimized out>) at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panic.rs:318
#77 std::panicking::try::do_call (data=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panicking.rs:303
#78 0x00007f49cb03ce37 in __rust_maybe_catch_panic () at src/libpanic_unwind/lib.rs:86
#79 0x00007f49caf3298a in std::panicking::try (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panicking.rs:281
#80 std::panic::catch_unwind (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panic.rs:394
#81 std::thread::Builder::spawn_unchecked::{{closure}} ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/thread/mod.rs:474
#82 core::ops::function::FnOnce::call_once{{vtable-shim}} ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libcore/ops/function.rs:232
#83 0x00007f49cb020d9f in <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/liballoc/boxed.rs:1017
#84 0x00007f49cb03bfbd in <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/liballoc/boxed.rs:1017
#85 std::sys_common::thread::start_thread () at src/libstd/sys_common/thread.rs:13
#86 std::sys::unix::thread::Thread::new::thread_start () at src/libstd/sys/unix/thread.rs:80
#87 0x00007f49d3e316db in start_thread (arg=0x7f49c61c4700) at pthread_create.c:463
#88 0x00007f49d33b588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f49c63c5700 (LWP 5924)):
#0  0x00007f49d3e379f3 in futex_wait_cancelable (private=<optimized out>, expected=0, 
    futex_word=0x7f49a8000bd0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x7f49a8000b80, cond=0x7f49a8000ba8)
    at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x7f49a8000ba8, mutex=0x7f49a8000b80) at pthread_cond_wait.c:655
#3  0x00007f49cb011408 in parking_lot_core::thread_parker::ThreadParker::park (self=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/parking_lot_core-0.3.1/src/thread_parker/unix.rs:95
#4  parking_lot_core::parking_lot::park_internal (key=<optimized out>, validate=..., before_sleep=..., 
    timed_out=..., park_token=..., timeout=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/parking_lot_core-0.3.1/src/parking_lot.rs:597
#5  0x00007f49cb00f524 in parking_lot_core::parking_lot::park (key=139954327915472, validate=..., 
    timed_out=..., park_token=..., before_sleep=..., timeout=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/parking_lot_core-0.3.1/src/parking_lot.rs:542
#6  parking_lot::raw_mutex::RawMutex::lock_slow (self=<optimized out>, timeout=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/parking_lot-0.6.4/src/raw_mutex.rs:235
#7  0x00007f49ca838bdc in <parking_lot::raw_mutex::RawMutex as lock_api::mutex::RawMutex>::lock (
    self=0x5618fe4a81c0)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/parking_lot-0.6.4/src/raw_mutex.rs:54
#8  lock_api::mutex::Mutex<R,T>::lock (self=0x5618fe4a81c0)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/lock_api-0.1.5/src/mutex.rs:148
#9  graph::Graph<N>::get_inner::{{closure}} () at /src/pants/src/rust/engine/graph/src/lib.rs:490
#10 0x00007f49ca7b518c in <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., 
    cx=<optimized out>) at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#11 std::future::poll_with_tls_context (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:102
#12 0x00007f49ca7bb443 in graph::Graph<N>::get::{{closure}} ()
    at /src/pants/src/rust/engine/graph/src/lib.rs:572
#13 <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., cx=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#14 std::future::poll_with_tls_context (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:102
#15 0x00007f49ca897d9d in engine::context::Context::get::{{closure}} () at src/context.rs:363
#16 <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., cx=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#17 std::future::poll_with_tls_context (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:102
#18 engine::nodes::<impl fs::VFS<engine::core::Failure> for engine::context::Context>::scandir::__scandir::{{closure}} () at src/nodes.rs:46
#19 <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., cx=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#20 0x00007f49ca8a09d7 in <core::pin::Pin<P> as core::future::future::Future>::poll (self=..., cx=0x0)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libcore/future/future.rs:118
#21 std::future::poll_with_tls_context (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:102
#22 fs::glob_matching::GlobMatchingImplementation::directory_listing::__directory_listing::{{closure}} ()
    at /src/pants/src/rust/engine/fs/src/glob_matching.rs:370
#23 <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., cx=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#24 0x00007f49ca8a2d6e in <core::pin::Pin<P> as core::future::future::Future>::poll (self=..., cx=0x0)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libcore/future/future.rs:118
#25 std::future::poll_with_tls_context (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:102
#26 fs::glob_matching::GlobMatchingImplementation::expand_dir_wildcard::__expand_dir_wildcard::{{closure}}
    () at /src/pants/src/rust/engine/fs/src/glob_matching.rs:590
#27 <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., cx=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#28 0x00007f49ca89843b in <core::pin::Pin<P> as core::future::future::Future>::poll (self=..., cx=0x0)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libcore/future/future.rs:118
#29 std::future::poll_with_tls_context (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:102
#30 fs::glob_matching::GlobMatchingImplementation::expand_single::__expand_single::{{closure}} ()
    at /src/pants/src/rust/engine/fs/src/glob_matching.rs:546
#31 <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., cx=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#32 0x00007f49ca7b4597 in <core::pin::Pin<P> as core::future::future::Future>::poll (self=..., 
    cx=<optimized out>) at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libcore/future/future.rs:118
#33 <F as futures_core::future::TryFuture>::try_poll (self=..., cx=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.4/src/future.rs:83
#34 <futures_util::future::try_join_all::TryJoinAll<F> as core::future::future::Future>::poll (self=..., 
    cx=0x7f49c63c3c80)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/futures-util-0.3.4/src/future/try_join_all.rs:145
#35 std::future::poll_with_tls_context (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:102
#36 0x00007f49ca8a34ef in fs::glob_matching::GlobMatchingImplementation::expand_dir_wildcard::__expand_dir_wildcard::{{closure}} () at /src/pants/src/rust/engine/fs/src/glob_matching.rs:610
#37 <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., cx=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#38 0x00007f49ca89843b in <core::pin::Pin<P> as core::future::future::Future>::poll (self=..., cx=0x0)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libcore/future/future.rs:118
#39 std::future::poll_with_tls_context (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:102
#40 fs::glob_matching::GlobMatchingImplementation::expand_single::__expand_single::{{closure}} ()
    at /src/pants/src/rust/engine/fs/src/glob_matching.rs:546
#41 <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., cx=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#42 0x00007f49ca7b4597 in <core::pin::Pin<P> as core::future::future::Future>::poll (self=..., 
    cx=<optimized out>) at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libcore/future/future.rs:118
#43 <F as futures_core::future::TryFuture>::try_poll (self=..., cx=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.4/src/future.rs:83
#44 <futures_util::future::try_join_all::TryJoinAll<F> as core::future::future::Future>::poll (self=..., 
    cx=0x7f49c63c3c80)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/futures-util-0.3.4/src/future/try_join_all.rs:145
#45 std::future::poll_with_tls_context (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:102
#46 0x00007f49ca8a34ef in fs::glob_matching::GlobMatchingImplementation::expand_dir_wildcard::__expand_dir_wildcard::{{closure}} () at /src/pants/src/rust/engine/fs/src/glob_matching.rs:610
#47 <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., cx=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#48 0x00007f49ca89843b in <core::pin::Pin<P> as core::future::future::Future>::poll (self=..., cx=0x0)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libcore/future/future.rs:118
#49 std::future::poll_with_tls_context (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:102
#50 fs::glob_matching::GlobMatchingImplementation::expand_single::__expand_single::{{closure}} ()
    at /src/pants/src/rust/engine/fs/src/glob_matching.rs:546
#51 <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., cx=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#52 0x00007f49ca7b4597 in <core::pin::Pin<P> as core::future::future::Future>::poll (self=..., 
    cx=<optimized out>) at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libcore/future/future.rs:118
#53 <F as futures_core::future::TryFuture>::try_poll (self=..., cx=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.4/src/future.rs:83
#54 <futures_util::future::try_join_all::TryJoinAll<F> as core::future::future::Future>::poll (self=..., 
    cx=0x7f49c63c3c80)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/futures-util-0.3.4/src/future/try_join_all.rs:145
#55 std::future::poll_with_tls_context (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:102
#56 0x00007f49ca8a34ef in fs::glob_matching::GlobMatchingImplementation::expand_dir_wildcard::__expand_dir_wildcard::{{closure}} () at /src/pants/src/rust/engine/fs/src/glob_matching.rs:610
#57 <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., cx=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#58 0x00007f49ca89843b in <core::pin::Pin<P> as core::future::future::Future>::poll (self=..., cx=0x0)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libcore/future/future.rs:118
#59 std::future::poll_with_tls_context (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:102
#60 fs::glob_matching::GlobMatchingImplementation::expand_single::__expand_single::{{closure}} ()
    at /src/pants/src/rust/engine/fs/src/glob_matching.rs:546
#61 <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., cx=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#62 0x00007f49ca7b4597 in <core::pin::Pin<P> as core::future::future::Future>::poll (self=..., 
    cx=<optimized out>) at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libcore/future/future.rs:118
#63 <F as futures_core::future::TryFuture>::try_poll (self=..., cx=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.4/src/future.rs:83
#64 <futures_util::future::try_join_all::TryJoinAll<F> as core::future::future::Future>::poll (self=..., 
    cx=0x7f49c63c3c80)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/futures-util-0.3.4/src/future/try_join_all.rs:145
#65 std::future::poll_with_tls_context (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:102
#66 0x00007f49ca8a7da0 in fs::glob_matching::GlobMatchingImplementation::expand::__expand::{{closure}} ()
    at /src/pants/src/rust/engine/fs/src/glob_matching.rs:442
#67 <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., cx=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#68 0x00007f49ca8b56ee in <core::pin::Pin<P> as core::future::future::Future>::poll (self=..., cx=0x0)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libcore/future/future.rs:118
#69 std::future::poll_with_tls_context (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:102
#70 fs::glob_matching::GlobMatching::expand::__expand::{{closure}} ()
    at /src/pants/src/rust/engine/fs/src/glob_matching.rs:350
#71 <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., cx=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#72 0x00007f49ca8add9a in <core::pin::Pin<P> as core::future::future::Future>::poll (self=..., cx=0x0)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libcore/future/future.rs:118
#73 <F as futures_core::future::TryFuture>::try_poll (self=..., cx=0x0)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.4/src/future.rs:83
#74 <futures_util::future::try_future::map_err::MapErr<Fut,F> as core::future::future::Future>::poll (
    self=..., cx=0x0)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/futures-util-0.3.4/src/future/try_future/map_err.rs:43
#75 std::future::poll_with_tls_context (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:102
#76 engine::nodes::Snapshot::create::{{closure}} () at src/nodes.rs:471
#77 <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., cx=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#78 std::future::poll_with_tls_context (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:102
#79 <engine::nodes::Snapshot as engine::nodes::WrappedNode>::run::__run::{{closure}} () at src/nodes.rs:569
#80 <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., cx=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#81 0x00007f49ca7baf19 in <core::pin::Pin<P> as core::future::future::Future>::poll (self=..., cx=0x0)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libcore/future/future.rs:118
#82 <F as futures_core::future::TryFuture>::try_poll (self=..., cx=0x0)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.4/src/future.rs:83
#83 <futures_util::future::try_future::map_ok::MapOk<Fut,F> as core::future::future::Future>::poll (
    self=..., cx=0x0)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/futures-util-0.3.4/src/future/try_future/map_ok.rs:45
#84 std::future::poll_with_tls_context (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:102
#85 0x00007f49ca860cae in <engine::nodes::NodeKey as graph::node::Node>::run::__run::{{closure}}::{{closure}} () at src/nodes.rs:1066
#86 <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., cx=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#87 <tokio::task::task_local::TaskLocalFuture<T,F> as core::future::future::Future>::poll (self=..., 
    cx=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/task/task_local.rs:214
#88 std::future::poll_with_tls_context (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:102
#89 tokio::task::task_local::LocalKey<T>::scope::{{closure}} ()
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/task/task_local.rs:120
#90 0x00007f49ca8b9fd2 in <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., 
    cx=<optimized out>) at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#91 std::future::poll_with_tls_context (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:102
#92 workunit_store::scope_task_workunit_state::{{closure}} ()
    at /src/pants/src/rust/engine/workunit_store/src/lib.rs:481
#93 <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., cx=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#94 std::future::poll_with_tls_context (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:102
#95 <engine::nodes::NodeKey as graph::node::Node>::run::__run::{{closure}} () at src/nodes.rs:1044
#96 <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., cx=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#97 0x00007f49ca8ac26b in <core::pin::Pin<P> as core::future::future::Future>::poll (self=..., cx=0x0)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libcore/future/future.rs:118
#98 std::future::poll_with_tls_context (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:102
#99 graph::entry::Entry<N>::run::{{closure}} () at /src/pants/src/rust/engine/graph/src/entry.rs:323
#100 <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., cx=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#101 <tokio::task::task_local::TaskLocalFuture<T,F> as core::future::future::Future>::poll (self=..., 
    cx=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/task/task_local.rs:214
#102 std::future::poll_with_tls_context (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:102
#103 tokio::task::task_local::LocalKey<T>::scope::{{closure}} ()
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/task/task_local.rs:120
#104 <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., cx=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#105 std::future::poll_with_tls_context (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:102
#106 workunit_store::scope_task_workunit_state::{{closure}} ()
    at /src/pants/src/rust/engine/workunit_store/src/lib.rs:481
#107 <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., cx=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#108 std::future::poll_with_tls_context (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:102
#109 task_executor::Executor::future_with_correct_context::{{closure}} ()
    at /src/pants/src/rust/engine/task_executor/src/lib.rs:131
#110 <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., cx=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#111 <tokio::task::task_local::TaskLocalFuture<T,F> as core::future::future::Future>::poll (self=..., 
    cx=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/task/task_local.rs:214
#112 std::future::poll_with_tls_context (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:102
#113 tokio::task::task_local::LocalKey<T>::scope::{{closure}} ()
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/task/task_local.rs:120
#114 <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., cx=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#115 std::future::poll_with_tls_context (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:102
#116 logging::logger::scope_task_destination::{{closure}} ()
    at /src/pants/src/rust/engine/logging/src/logger.rs:322
#117 <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., cx=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#118 0x00007f49ca7bbe5f in tokio::runtime::task::core::Core<T,S>::poll::{{closure}} (ptr=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/core.rs:173
#119 tokio::loom::std::unsafe_cell::UnsafeCell<T>::with_mut (self=<optimized out>, f=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/loom/std/unsafe_cell.rs:14
#120 tokio::runtime::task::core::Core<T,S>::poll (self=<optimized out>, header=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/core.rs:158
#121 tokio::runtime::task::harness::Harness<T,S>::poll::{{closure}} ()
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/harness.rs:113
#122 core::ops::function::FnOnce::call_once ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libcore/ops/function.rs:232
#123 <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once (self=..., 
    _args=<optimized out>) at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panic.rs:318
#124 std::panicking::try::do_call (data=0x7f49c63c48c0 "\260H<\306I\177")
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panicking.rs:303
#125 0x00007f49cb03ce37 in __rust_maybe_catch_panic () at src/libpanic_unwind/lib.rs:86
#126 0x00007f49ca86a444 in std::panicking::try (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panicking.rs:281
#127 std::panic::catch_unwind (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panic.rs:394
#128 tokio::runtime::task::harness::Harness<T,S>::poll (self=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/harness.rs:89
#129 tokio::runtime::task::raw::poll (ptr=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/raw.rs:104
#130 0x00007f49caf4fe6b in tokio::runtime::task::raw::RawTask::poll (self=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/raw.rs:66
#131 tokio::runtime::task::Notified<S>::run (self=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/mod.rs:169
#132 tokio::runtime::thread_pool::worker::Context::run_task::{{closure}} ()
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/thread_pool/worker.rs:374
#133 0x00007f49caf4fca7 in tokio::coop::budget::{{closure}} (hits=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/coop.rs:97
#134 std::thread::local::LocalKey<T>::try_with (self=<optimized out>, f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/thread/local.rs:262
#135 std::thread::local::LocalKey<T>::with (f=..., self=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/thread/local.rs:239
#136 tokio::coop::budget (f=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/coop.rs:79
#137 tokio::runtime::thread_pool::worker::Context::run_task (self=<optimized out>, task=..., 
    core=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/thread_pool/worker.rs:352
#138 0x00007f49caf4ed97 in tokio::runtime::thread_pool::worker::Context::run (self=0x7f49c63c4a48, 
    core=0x5618fafd8be0)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/thread_pool/worker.rs:324
#139 tokio::runtime::thread_pool::worker::run::{{closure}} ()
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/thread_pool/worker.rs:309
#140 tokio::macros::scoped_tls::ScopedKey<T>::set (t=0x7f49c63c4a48, self=<optimized out>, f=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/macros/scoped_tls.rs:64
#141 tokio::runtime::thread_pool::worker::run (worker=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/thread_pool/worker.rs:306
#142 0x00007f49caf315b4 in tokio::runtime::thread_pool::worker::Launch::launch::{{closure}} ()
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/thread_pool/worker.rs:285
#143 <tokio::runtime::blocking::task::BlockingTask<T> as core::future::future::Future>::poll (self=..., 
    _cx=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/blocking/task.rs:38
#144 tokio::runtime::task::core::Core<T,S>::poll::{{closure}} (ptr=0x5618fb152510)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/core.rs:173
#145 tokio::loom::std::unsafe_cell::UnsafeCell<T>::with_mut (self=0x5618fb152510, f=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/loom/std/unsafe_cell.rs:14
#146 tokio::runtime::task::core::Core<T,S>::poll (self=0x5618fb152510, header=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/core.rs:158
#147 tokio::runtime::task::harness::Harness<T,S>::poll::{{closure}} ()
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/harness.rs:113
#148 core::ops::function::FnOnce::call_once ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libcore/ops/function.rs:232
#149 <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once (self=..., 
    _args=<optimized out>) at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panic.rs:318
#150 std::panicking::try::do_call (data=0x7f49c63c4be0 "\320K<\306I\177")
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panicking.rs:303
#151 0x00007f49cb03ce37 in __rust_maybe_catch_panic () at src/libpanic_unwind/lib.rs:86
#152 0x00007f49caf4a1cb in std::panicking::try (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panicking.rs:281
#153 std::panic::catch_unwind (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panic.rs:394
#154 tokio::runtime::task::harness::Harness<T,S>::poll (self=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/harness.rs:89
#155 tokio::runtime::task::raw::poll (ptr=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/raw.rs:104
#156 0x00007f49caf2f637 in tokio::runtime::task::raw::RawTask::poll (self=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/raw.rs:66
#157 tokio::runtime::task::Notified<S>::run (self=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/mod.rs:169
#158 tokio::runtime::blocking::pool::Inner::run (self=0x5618fabc9140)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/blocking/pool.rs:230
#159 tokio::runtime::blocking::pool::Spawner::spawn_thread::{{closure}}::{{closure}} ()
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/blocking/pool.rs:210
#160 tokio::runtime::context::enter (new=..., f=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/context.rs:72
#161 tokio::runtime::handle::Handle::enter (self=0x7f49c63c4ce0, f=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/handle.rs:71
#162 tokio::runtime::blocking::pool::Spawner::spawn_thread::{{closure}} ()
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/blocking/pool.rs:209
#163 std::sys_common::backtrace::__rust_begin_short_backtrace (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/sys_common/backtrace.rs:130
#164 0x00007f49caf31505 in std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}} ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/thread/mod.rs:475
#165 <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once (self=..., 
    _args=<optimized out>) at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panic.rs:318
#166 std::panicking::try::do_call (data=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panicking.rs:303
#167 0x00007f49cb03ce37 in __rust_maybe_catch_panic () at src/libpanic_unwind/lib.rs:86
#168 0x00007f49caf3298a in std::panicking::try (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panicking.rs:281
#169 std::panic::catch_unwind (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panic.rs:394
#170 std::thread::Builder::spawn_unchecked::{{closure}} ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/thread/mod.rs:474
#171 core::ops::function::FnOnce::call_once{{vtable-shim}} ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libcore/ops/function.rs:232
#172 0x00007f49cb020d9f in <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/liballoc/boxed.rs:1017
#173 0x00007f49cb03bfbd in <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/liballoc/boxed.rs:1017
#174 std::sys_common::thread::start_thread () at src/libstd/sys_common/thread.rs:13
#175 std::sys::unix::thread::Thread::new::thread_start () at src/libstd/sys/unix/thread.rs:80
#176 0x00007f49d3e316db in start_thread (arg=0x7f49c63c5700) at pthread_create.c:463
#177 0x00007f49d33b588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f49c65c6700 (LWP 5923)):
#0  0x00007f49d3e37ed9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7f49c65bff40, 
    expected=0, futex_word=0x5618f9fdd208 <_PyRuntime+1224>)
    at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  __pthread_cond_wait_common (abstime=0x7f49c65bfff0, mutex=0x5618f9fdd210 <_PyRuntime+1232>, 
    cond=0x5618f9fdd1e0 <_PyRuntime+1184>) at pthread_cond_wait.c:533
#2  __pthread_cond_timedwait (cond=cond@entry=0x5618f9fdd1e0 <_PyRuntime+1184>, 
    mutex=mutex@entry=0x5618f9fdd210 <_PyRuntime+1232>, abstime=abstime@entry=0x7f49c65bfff0)
    at pthread_cond_wait.c:667
#3  0x00005618f9b54f7c in PyCOND_TIMEDWAIT (us=<optimized out>, mut=0x5618f9fdd210 <_PyRuntime+1232>, 
    cond=0x5618f9fdd1e0 <_PyRuntime+1184>) at Python/condvar.h:73
#4  take_gil (ceval=0x5618f9fdcf88 <_PyRuntime+584>, tstate=tstate@entry=0x7f49c0066dd0)
    at Python/ceval_gil.h:206
#5  0x00005618f9b56506 in PyEval_RestoreThread (tstate=tstate@entry=0x7f49c0066dd0) at Python/ceval.c:399
#6  0x00005618f9b9e1c5 in PyGILState_Ensure () at Python/pystate.c:1298
#7  0x00007f49caae8ec7 in cpython::pythonrun::GILGuard::acquire ()
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/cpython-0.5.0/src/pythonrun.rs:119
#8  0x00007f49ca8f5154 in cpython::python::Python::acquire_gil ()
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/cpython-0.5.0/src/python.rs:237
#9  engine::externs::with_interns (f=...) at src/externs/mod.rs:372
#10 engine::externs::val_for (key=0x7f49c012eb80) at src/externs/mod.rs:98
#11 0x00007f49ca8eb7cb in engine::core::Function::name (self=0x5618f9fdd208 <_PyRuntime+1224>)
    at src/core.rs:161
#12 0x00007f49ca8eba8a in <engine::core::Function as core::fmt::Debug>::fmt (self=0x80, f=0x7f49c65c0290)
    at src/core.rs:179
#13 0x00007f49cb05817c in core::fmt::write () at src/libcore/fmt/mod.rs:1063
#14 0x00007f49cb058f84 in core::fmt::Formatter::write_fmt () at src/libcore/fmt/mod.rs:1484
#15 0x00007f49ca7e7022 in <engine::nodes::Task as core::fmt::Debug>::fmt (self=<optimized out>, 
    f=0xfffffffffffffdfc) at src/nodes.rs:835
#16 <alloc::boxed::Box<T> as core::fmt::Debug>::fmt (f=0xfffffffffffffdfc, self=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/liballoc/boxed.rs:914
#17 <&T as core::fmt::Debug>::fmt (self=<optimized out>, f=0x5618f9fdd208 <_PyRuntime+1224>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libcore/fmt/mod.rs:1959
#18 0x00007f49cb05641e in core::fmt::builders::DebugTuple::field::{{closure}} ()
    at src/libcore/fmt/builders.rs:347
#19 core::result::Result<T,E>::and_then () at src/libcore/result.rs:727
#20 core::fmt::builders::DebugTuple::field () at src/libcore/fmt/builders.rs:334
#21 0x00007f49ca92b93b in <engine::nodes::NodeKey as core::fmt::Debug>::fmt (self=<optimized out>, 
    f=<optimized out>) at src/nodes.rs:921
#22 0x00007f49cb05817c in core::fmt::write () at src/libcore/fmt/mod.rs:1063
#23 0x00007f49cb057f61 in <core::fmt::Arguments as core::fmt::Display>::fmt () at src/libcore/fmt/mod.rs:416
#24 <core::fmt::Arguments as core::fmt::Debug>::fmt () at src/libcore/fmt/mod.rs:409
#25 0x00007f49cb05817c in core::fmt::write () at src/libcore/fmt/mod.rs:1063
#26 0x00007f49caf24eef in std::io::Write::write_fmt (self=<optimized out>, fmt=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/io/mod.rs:1426
#27 simplelog::loggers::logging::write_args (record=<optimized out>, write=<optimized out>)
    at <::core::macros::writeln macros>:3
#28 simplelog::loggers::logging::try_log (config=<optimized out>, record=<optimized out>, 
    write=0x5618fa8ccb94)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/simplelog-0.7.4/src/loggers/logging.rs:36
#29 <simplelog::loggers::writelog::WriteLogger<W> as log::Log>::log (self=<optimized out>, 
    record=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/simplelog-0.7.4/src/loggers/writelog.rs:76
#30 <logging::logger::MaybeWriteLogger<W> as log::Log>::log (self=<optimized out>, record=<optimized out>)
    at logging/src/logger.rs:259
#31 <logging::logger::Logger as log::Log>::log (self=<optimized out>, record=<optimized out>)
    at logging/src/logger.rs:185
#32 0x00007f49cb015706 in log::__private_api_log (args=..., level=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/log-0.4.8/src/lib.rs:1393
#33 0x00007f49ca83ba6e in graph::Graph<N>::get_inner::{{closure}} () at <::log::macros::log macros>:6
#34 0x00007f49ca7b518c in <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., 
    cx=<optimized out>) at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#35 std::future::poll_with_tls_context (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:102
#36 0x00007f49ca7bb443 in graph::Graph<N>::get::{{closure}} ()
    at /src/pants/src/rust/engine/graph/src/lib.rs:572
#37 <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., cx=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#38 std::future::poll_with_tls_context (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:102
#39 0x00007f49ca893de5 in engine::context::Context::get::{{closure}} () at src/context.rs:363
#40 <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., cx=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#41 std::future::poll_with_tls_context (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:102
#42 <engine::nodes::Select as engine::nodes::WrappedNode>::run::__run::{{closure}} () at src/nodes.rs:156
#43 <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., cx=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#44 0x00007f49ca9278b7 in <core::pin::Pin<P> as core::future::future::Future>::poll (self=..., 
    cx=<optimized out>) at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libcore/future/future.rs:118
#45 <F as futures_core::future::TryFuture>::try_poll (self=..., cx=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.4/src/future.rs:83
#46 <futures_util::future::try_join_all::TryJoinAll<F> as core::future::future::Future>::poll (self=..., 
    cx=0x7f49c65c4c80)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/futures-util-0.3.4/src/future/try_join_all.rs:145
#47 std::future::poll_with_tls_context (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:102
#48 <engine::nodes::Task as engine::nodes::WrappedNode>::run::__run::{{closure}} () at src/nodes.rs:855
#49 0x00007f49ca898e97 in <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., 
    cx=<optimized out>) at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#50 0x00007f49ca7b3989 in <core::pin::Pin<P> as core::future::future::Future>::poll (self=..., cx=0x0)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libcore/future/future.rs:118
#51 <F as futures_core::future::TryFuture>::try_poll (self=..., cx=0x0)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.4/src/future.rs:83
#52 <futures_util::future::try_future::map_ok::MapOk<Fut,F> as core::future::future::Future>::poll (
    self=..., cx=0x0)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/futures-util-0.3.4/src/future/try_future/map_ok.rs:45
#53 std::future::poll_with_tls_context (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:102
#54 0x00007f49ca860811 in <engine::nodes::NodeKey as graph::node::Node>::run::__run::{{closure}}::{{closure}} () at src/nodes.rs:1067
#55 <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., cx=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#56 <tokio::task::task_local::TaskLocalFuture<T,F> as core::future::future::Future>::poll (self=..., 
    cx=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/task/task_local.rs:214
#57 std::future::poll_with_tls_context (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:102
#58 tokio::task::task_local::LocalKey<T>::scope::{{closure}} ()
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/task/task_local.rs:120
#59 0x00007f49ca8b9fd2 in <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., 
    cx=<optimized out>) at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#60 std::future::poll_with_tls_context (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:102
#61 workunit_store::scope_task_workunit_state::{{closure}} ()
    at /src/pants/src/rust/engine/workunit_store/src/lib.rs:481
#62 <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., cx=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#63 std::future::poll_with_tls_context (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:102
#64 <engine::nodes::NodeKey as graph::node::Node>::run::__run::{{closure}} () at src/nodes.rs:1044
#65 <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., cx=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#66 0x00007f49ca8ac26b in <core::pin::Pin<P> as core::future::future::Future>::poll (self=..., cx=0x0)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libcore/future/future.rs:118
#67 std::future::poll_with_tls_context (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:102
#68 graph::entry::Entry<N>::run::{{closure}} () at /src/pants/src/rust/engine/graph/src/entry.rs:323
#69 <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., cx=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#70 <tokio::task::task_local::TaskLocalFuture<T,F> as core::future::future::Future>::poll (self=..., 
    cx=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/task/task_local.rs:214
#71 std::future::poll_with_tls_context (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:102
#72 tokio::task::task_local::LocalKey<T>::scope::{{closure}} ()
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/task/task_local.rs:120
#73 <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., cx=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#74 std::future::poll_with_tls_context (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:102
#75 workunit_store::scope_task_workunit_state::{{closure}} ()
    at /src/pants/src/rust/engine/workunit_store/src/lib.rs:481
#76 <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., cx=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#77 std::future::poll_with_tls_context (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:102
#78 task_executor::Executor::future_with_correct_context::{{closure}} ()
    at /src/pants/src/rust/engine/task_executor/src/lib.rs:131
#79 <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., cx=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#80 <tokio::task::task_local::TaskLocalFuture<T,F> as core::future::future::Future>::poll (self=..., 
    cx=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/task/task_local.rs:214
#81 std::future::poll_with_tls_context (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:102
#82 tokio::task::task_local::LocalKey<T>::scope::{{closure}} ()
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/task/task_local.rs:120
#83 <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., cx=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#84 std::future::poll_with_tls_context (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:102
#85 logging::logger::scope_task_destination::{{closure}} ()
    at /src/pants/src/rust/engine/logging/src/logger.rs:322
#86 <std::future::GenFuture<T> as core::future::future::Future>::poll (self=..., cx=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/future.rs:44
#87 0x00007f49ca7bbe5f in tokio::runtime::task::core::Core<T,S>::poll::{{closure}} (ptr=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/core.rs:173
#88 tokio::loom::std::unsafe_cell::UnsafeCell<T>::with_mut (self=<optimized out>, f=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/loom/std/unsafe_cell.rs:14
#89 tokio::runtime::task::core::Core<T,S>::poll (self=<optimized out>, header=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/core.rs:158
#90 tokio::runtime::task::harness::Harness<T,S>::poll::{{closure}} ()
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/harness.rs:113
#91 core::ops::function::FnOnce::call_once ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libcore/ops/function.rs:232
#92 <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once (self=..., 
    _args=<optimized out>) at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panic.rs:318
#93 std::panicking::try::do_call (data=0x7f49c65c58c0 "\260X\\\306I\177")
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panicking.rs:303
#94 0x00007f49cb03ce37 in __rust_maybe_catch_panic () at src/libpanic_unwind/lib.rs:86
#95 0x00007f49ca86a444 in std::panicking::try (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panicking.rs:281
#96 std::panic::catch_unwind (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panic.rs:394
#97 tokio::runtime::task::harness::Harness<T,S>::poll (self=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/harness.rs:89
#98 tokio::runtime::task::raw::poll (ptr=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/raw.rs:104
#99 0x00007f49caf4fd7b in tokio::runtime::task::raw::RawTask::poll (self=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/raw.rs:66
#100 tokio::runtime::task::Notified<S>::run (self=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/mod.rs:169
#101 tokio::runtime::thread_pool::worker::Context::run_task::{{closure}} ()
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/thread_pool/worker.rs:353
#102 0x00007f49caf4fca7 in tokio::coop::budget::{{closure}} (hits=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/coop.rs:97
#103 std::thread::local::LocalKey<T>::try_with (self=<optimized out>, f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/thread/local.rs:262
#104 std::thread::local::LocalKey<T>::with (f=..., self=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/thread/local.rs:239
#105 tokio::coop::budget (f=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/coop.rs:79
#106 tokio::runtime::thread_pool::worker::Context::run_task (self=<optimized out>, task=..., 
    core=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/thread_pool/worker.rs:352
#107 0x00007f49caf4ed97 in tokio::runtime::thread_pool::worker::Context::run (self=0x7f49c65c5a48, 
    core=0x5618faa6f4e0)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/thread_pool/worker.rs:324
#108 tokio::runtime::thread_pool::worker::run::{{closure}} ()
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/thread_pool/worker.rs:309
#109 tokio::macros::scoped_tls::ScopedKey<T>::set (t=0x7f49c65c5a48, self=<optimized out>, f=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/macros/scoped_tls.rs:64
#110 tokio::runtime::thread_pool::worker::run (worker=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/thread_pool/worker.rs:306
#111 0x00007f49caf315b4 in tokio::runtime::thread_pool::worker::Launch::launch::{{closure}} ()
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/thread_pool/worker.rs:285
#112 <tokio::runtime::blocking::task::BlockingTask<T> as core::future::future::Future>::poll (self=..., 
    _cx=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/blocking/task.rs:38
#113 tokio::runtime::task::core::Core<T,S>::poll::{{closure}} (ptr=0x5618faf19d70)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/core.rs:173
#114 tokio::loom::std::unsafe_cell::UnsafeCell<T>::with_mut (self=0x5618faf19d70, f=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/loom/std/unsafe_cell.rs:14
#115 tokio::runtime::task::core::Core<T,S>::poll (self=0x5618faf19d70, header=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/core.rs:158
#116 tokio::runtime::task::harness::Harness<T,S>::poll::{{closure}} ()
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/harness.rs:113
#117 core::ops::function::FnOnce::call_once ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libcore/ops/function.rs:232
#118 <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once (self=..., 
    _args=<optimized out>) at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panic.rs:318
#119 std::panicking::try::do_call (data=0x7f49c65c5be0 "\320[\\\306I\177")
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panicking.rs:303
#120 0x00007f49cb03ce37 in __rust_maybe_catch_panic () at src/libpanic_unwind/lib.rs:86
#121 0x00007f49caf4a1cb in std::panicking::try (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panicking.rs:281
#122 std::panic::catch_unwind (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panic.rs:394
#123 tokio::runtime::task::harness::Harness<T,S>::poll (self=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/harness.rs:89
#124 tokio::runtime::task::raw::poll (ptr=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/raw.rs:104
#125 0x00007f49caf2f637 in tokio::runtime::task::raw::RawTask::poll (self=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/raw.rs:66
#126 tokio::runtime::task::Notified<S>::run (self=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/task/mod.rs:169
#127 tokio::runtime::blocking::pool::Inner::run (self=0x5618fabc9140)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/blocking/pool.rs:230
#128 tokio::runtime::blocking::pool::Spawner::spawn_thread::{{closure}}::{{closure}} ()
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/blocking/pool.rs:210
#129 tokio::runtime::context::enter (new=..., f=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/context.rs:72
#130 tokio::runtime::handle::Handle::enter (self=0x7f49c65c5ce0, f=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/handle.rs:71
#131 tokio::runtime::blocking::pool::Spawner::spawn_thread::{{closure}} ()
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/blocking/pool.rs:209
#132 std::sys_common::backtrace::__rust_begin_short_backtrace (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/sys_common/backtrace.rs:130
#133 0x00007f49caf31505 in std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}} ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/thread/mod.rs:475
#134 <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once (self=..., 
    _args=<optimized out>) at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panic.rs:318
#135 std::panicking::try::do_call (data=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panicking.rs:303
#136 0x00007f49cb03ce37 in __rust_maybe_catch_panic () at src/libpanic_unwind/lib.rs:86
#137 0x00007f49caf3298a in std::panicking::try (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panicking.rs:281
#138 std::panic::catch_unwind (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panic.rs:394
#139 std::thread::Builder::spawn_unchecked::{{closure}} ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/thread/mod.rs:474
#140 core::ops::function::FnOnce::call_once{{vtable-shim}} ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libcore/ops/function.rs:232
#141 0x00007f49cb020d9f in <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/liballoc/boxed.rs:1017
#142 0x00007f49cb03bfbd in <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once ()
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/liballoc/boxed.rs:1017
#143 std::sys_common::thread::start_thread () at src/libstd/sys_common/thread.rs:13
#144 std::sys::unix::thread::Thread::new::thread_start () at src/libstd/sys/unix/thread.rs:80
#145 0x00007f49d3e316db in start_thread (arg=0x7f49c65c6700) at pthread_create.c:463
#146 0x00007f49d33b588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f49d4262080 (LWP 5861)):
#0  0x00007f49d3e379f3 in futex_wait_cancelable (private=<optimized out>, expected=0, 
    futex_word=0x5618fac578d4) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x5618fac57880, cond=0x5618fac578a8)
    at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x5618fac578a8, mutex=0x5618fac57880) at pthread_cond_wait.c:655
#3  0x00007f49cb011408 in parking_lot_core::thread_parker::ThreadParker::park (self=<optimized out>)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/parking_lot_core-0.3.1/src/thread_parker/unix.rs:95
#4  parking_lot_core::parking_lot::park_internal (key=<optimized out>, validate=..., before_sleep=..., 
    timed_out=..., park_token=..., timeout=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/parking_lot_core-0.3.1/src/parking_lot.rs:597
#5  0x00007f49cb00f524 in parking_lot_core::parking_lot::park (key=94665286449364, validate=..., 
    timed_out=..., park_token=..., before_sleep=..., timeout=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/parking_lot_core-0.3.1/src/parking_lot.rs:542
#6  parking_lot::raw_mutex::RawMutex::lock_slow (self=<optimized out>, timeout=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/parking_lot-0.6.4/src/raw_mutex.rs:235
#7  0x00007f49cae943a7 in <parking_lot::raw_mutex::RawMutex as lock_api::mutex::RawMutex>::lock (
    self=0x5618fa392520)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/parking_lot-0.6.4/src/raw_mutex.rs:54
#8  lock_api::mutex::Mutex<R,T>::lock (self=0x5618fa392520)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/lock_api-0.1.5/src/mutex.rs:148
#9  workunit_store::WorkunitStore::heavy_hitters (self=<optimized out>, k=4)
    at workunit_store/src/lib.rs:179
#10 0x00007f49caab41e4 in ui::ConsoleUI::render (self=0x5618fe64bab8) at ui/src/console_ui.rs:142
#11 0x00007f49ca909d62 in engine::scheduler::Session::maybe_display_render (self=<optimized out>)
    at src/scheduler.rs:227
#12 engine::scheduler::Scheduler::execute (self=0x7f49c6642700, request=<optimized out>, 
    session=0x7f49c6642c40) at src/scheduler.rs:488
#13 0x00007f49ca7c4d62 in engine::externs::interface::scheduler_execute::{{closure}}::{{closure}}::{{closure}}::{{closure}} () at src/externs/interface.rs:900
#14 cpython::python::Python::allow_threads (self=..., f=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/cpython-0.5.0/src/python.rs:249
#15 engine::externs::interface::scheduler_execute::{{closure}}::{{closure}}::{{closure}} (
    session=0x7f49c6642c40) at src/externs/interface.rs:900
#16 engine::externs::interface::with_session (session_ptr=..., f=..., py=...)
    at src/externs/interface.rs:1597
#17 engine::externs::interface::scheduler_execute::{{closure}}::{{closure}} (
    execution_request=0x7f49c65e96d8) at src/externs/interface.rs:897
#18 engine::externs::interface::with_execution_request (execution_request_ptr=..., f=..., py=...)
    at src/externs/interface.rs:1619
#19 engine::externs::interface::scheduler_execute::{{closure}} (scheduler=<optimized out>)
    at src/externs/interface.rs:896
#20 engine::externs::interface::with_scheduler::{{closure}} () at src/externs/interface.rs:1586
#21 tokio::runtime::context::enter (new=..., f=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/context.rs:72
#22 tokio::runtime::handle::Handle::enter (self=<optimized out>, f=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/handle.rs:71
#23 tokio::runtime::Runtime::enter (self=<optimized out>, f=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.20/src/runtime/mod.rs:486
#24 engine::externs::interface::with_scheduler (scheduler_ptr=..., f=..., py=...)
    at src/externs/interface.rs:1586
#25 engine::externs::interface::scheduler_execute (scheduler_ptr=..., py=..., session_ptr=..., 
    execution_request_ptr=...) at src/externs/interface.rs:895
#26 engine::externs::interface::PyInit_native_engine::init::wrap::{{closure}} (py=...)
    at <::cpython::function::py_fn_impl macros>:20
#27 cpython::function::handle_callback::{{closure}} ()
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/cpython-0.5.0/src/function.rs:219
#28 std::panicking::try::do_call (data=<optimized out>)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panicking.rs:303
#29 0x00007f49cb03ce37 in __rust_maybe_catch_panic () at src/libpanic_unwind/lib.rs:86
#30 0x00007f49ca9163a6 in std::panicking::try (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panicking.rs:281
#31 std::panic::catch_unwind (f=...)
    at /rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd/src/libstd/panic.rs:394
#32 cpython::function::handle_callback (location=..., f=..., _c=...)
    at /home/vagrant/.cache/pants/rust/cargo/registry/src/github.com-1ecc6299db9ec823/cpython-0.5.0/src/function.rs:217
#33 engine::externs::interface::PyInit_native_engine::init::wrap (_slf=<optimized out>, 
    args=<optimized out>, kwargs=<optimized out>) at <::cpython::function::py_fn_impl macros>:13
#34 0x00005618f9a9644a in cfunction_call_varargs (kwargs=0x0, args=0x7f49c65f5e80, func=0x7f49cb673360)
    at Objects/call.c:742
#35 PyCFunction_Call (func=func@entry=0x7f49cb673360, args=args@entry=0x7f49c65f5e80, 
    kwargs=kwargs@entry=0x0) at Objects/call.c:772
#36 0x00005618f9a92c21 in _PyObject_MakeTpCall (callable=callable@entry=0x7f49cb673360, 
    args=args@entry=0x7f49c4174778, nargs=<optimized out>, keywords=keywords@entry=0x0)
    at Objects/call.c:159
#37 0x00005618f9a83945 in _PyObject_Vectorcall (kwnames=<optimized out>, nargsf=<optimized out>, 
    args=<optimized out>, callable=<optimized out>) at ./Include/cpython/abstract.h:125
#38 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, tstate=0x5618fa11a0f0)
    at Python/ceval.c:4987
#39 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3469
#40 0x00005618f9a79b17 in function_code_fastcall (co=<optimized out>, args=<optimized out>, nargs=3, 
    globals=<optimized out>) at Objects/call.c:283
#41 0x00005618f9a804e2 in _PyObject_Vectorcall (kwnames=<optimized out>, nargsf=<optimized out>, 
    args=<optimized out>, callable=<optimized out>) at ./Include/cpython/abstract.h:127
#42 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, tstate=0x5618fa11a0f0)
    at Python/ceval.c:4987
#43 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3486
#44 0x00005618f9a79b17 in function_code_fastcall (co=<optimized out>, args=<optimized out>, nargs=2, 
    globals=<optimized out>) at Objects/call.c:283
#45 0x00005618f9a804e2 in _PyObject_Vectorcall (kwnames=<optimized out>, nargsf=<optimized out>, 
    args=<optimized out>, callable=<optimized out>) at ./Include/cpython/abstract.h:127
#46 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, tstate=0x5618fa11a0f0)
    at Python/ceval.c:4987
#47 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3486
#48 0x00005618f9b575c0 in PyEval_EvalFrameEx (throwflag=0, f=0x5618fec0d650) at Python/ceval.c:741
#49 _PyEval_EvalCodeWithName (_co=<optimized out>, globals=<optimized out>, locals=locals@entry=0x0, 
    args=<optimized out>, argcount=3, kwnames=0x7f49cbb993d8, kwargs=0x5618fee16810, kwcount=2, kwstep=1, 
    defs=0x7f49cb65de98, defcount=2, kwdefs=0x0, closure=0x0, name=0x7f49cbb9fbb0, qualname=0x7f49cb659c10)
    at Python/ceval.c:4298
#50 0x00005618f9a93172 in _PyFunction_Vectorcall (func=<optimized out>, stack=<optimized out>, 
    nargsf=<optimized out>, kwnames=<optimized out>) at Objects/call.c:435
#51 0x00005618f9c56b85 in _PyObject_Vectorcall (kwnames=0x7f49cbb993c0, nargsf=3, args=0x5618fee167f8, 
    callable=0x7f49cb670310) at ./Include/cpython/abstract.h:127
#52 method_vectorcall (method=<optimized out>, args=0x5618fee16800, nargsf=<optimized out>, 
    kwnames=0x7f49cbb993c0) at Objects/classobject.c:60
#53 0x00005618f9a80498 in _PyObject_Vectorcall (kwnames=<optimized out>, nargsf=<optimized out>, 
    args=<optimized out>, callable=<optimized out>) at ./Include/cpython/abstract.h:127
#54 call_function (kwnames=0x7f49cbb993c0, oparg=<optimized out>, pp_stack=<synthetic pointer>, 
    tstate=0x5618fa11a0f0) at Python/ceval.c:4987
#55 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3515
#56 0x00005618f9b575c0 in PyEval_EvalFrameEx (throwflag=0, f=0x5618fee16610) at Python/ceval.c:741
#57 _PyEval_EvalCodeWithName (_co=<optimized out>, globals=<optimized out>, locals=locals@entry=0x0, 
    args=<optimized out>, argcount=1, kwnames=0x7f49ce4c4b98, kwargs=0x7f49c415c1c8, kwcount=7, kwstep=1, 
    defs=0x0, defcount=0, kwdefs=0x7f49c9490dc0, closure=0x0, name=0x7f49ce4bba70, qualname=0x7f49cbba0090)
    at Python/ceval.c:4298
#58 0x00005618f9a93172 in _PyFunction_Vectorcall (func=<optimized out>, stack=<optimized out>, 
    nargsf=<optimized out>, kwnames=<optimized out>) at Objects/call.c:435
#59 0x00005618f9c56b85 in _PyObject_Vectorcall (kwnames=0x7f49ce4c4b80, nargsf=1, args=0x7f49c415c1c0, 
    callable=0x7f49c91d4670) at ./Include/cpython/abstract.h:127
#60 method_vectorcall (method=<optimized out>, args=0x7f49c415c1c8, nargsf=<optimized out>, 
    kwnames=0x7f49ce4c4b80) at Objects/classobject.c:60
#61 0x00005618f9a80498 in _PyObject_Vectorcall (kwnames=<optimized out>, nargsf=<optimized out>, 
    args=<optimized out>, callable=<optimized out>) at ./Include/cpython/abstract.h:127
#62 call_function (kwnames=0x7f49ce4c4b80, oparg=<optimized out>, pp_stack=<synthetic pointer>, 
    tstate=0x5618fa11a0f0) at Python/ceval.c:4987
#63 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3515
#64 0x00005618f9b575c0 in PyEval_EvalFrameEx (throwflag=0, f=0x7f49c415c040) at Python/ceval.c:741
#65 _PyEval_EvalCodeWithName (_co=<optimized out>, globals=<optimized out>, locals=locals@entry=0x0, 
    args=<optimized out>, argcount=2, kwnames=0x7f49ce4ba358, kwargs=0x5618fe641be8, kwcount=1, kwstep=1, 
    defs=0x0, defcount=0, kwdefs=0x0, closure=0x0, name=0x7f49ce4b5da0, qualname=0x7f49ce4c4c30)
    at Python/ceval.c:4298
#66 0x00005618f9a93172 in _PyFunction_Vectorcall (func=<optimized out>, stack=<optimized out>, 
    nargsf=<optimized out>, kwnames=<optimized out>) at Objects/call.c:435
#67 0x00005618f9c56b85 in _PyObject_Vectorcall (kwnames=0x7f49ce4ba340, nargsf=2, args=0x5618fe641bd8, 
    callable=0x7f49c916f700) at ./Include/cpython/abstract.h:127
#68 method_vectorcall (method=<optimized out>, args=0x5618fe641be0, nargsf=<optimized out>, 
    kwnames=0x7f49ce4ba340) at Objects/classobject.c:60
#69 0x00005618f9a80498 in _PyObject_Vectorcall (kwnames=<optimized out>, nargsf=<optimized out>, 
    args=<optimized out>, callable=<optimized out>) at ./Include/cpython/abstract.h:127
#70 call_function (kwnames=0x7f49ce4ba340, oparg=<optimized out>, pp_stack=<synthetic pointer>, 
    tstate=0x5618fa11a0f0) at Python/ceval.c:4987
#71 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3515
#72 0x00005618f9a79b17 in function_code_fastcall (co=<optimized out>, args=<optimized out>, nargs=2, 
    globals=<optimized out>) at Objects/call.c:283
#73 0x00005618f9a804e2 in _PyObject_Vectorcall (kwnames=<optimized out>, nargsf=<optimized out>, 
    args=<optimized out>, callable=<optimized out>) at ./Include/cpython/abstract.h:127
#74 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, tstate=0x5618fa11a0f0)
    at Python/ceval.c:4987
#75 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3486
#76 0x00005618f9a79b17 in function_code_fastcall (co=<optimized out>, args=<optimized out>, nargs=2, 
    globals=<optimized out>) at Objects/call.c:283
#77 0x00005618f9a804e2 in _PyObject_Vectorcall (kwnames=<optimized out>, nargsf=<optimized out>, 
    args=<optimized out>, callable=<optimized out>) at ./Include/cpython/abstract.h:127
#78 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, tstate=0x5618fa11a0f0)
    at Python/ceval.c:4987
#79 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3486
#80 0x00005618f9a79b17 in function_code_fastcall (co=<optimized out>, args=<optimized out>, nargs=2, 
    globals=<optimized out>) at Objects/call.c:283
#81 0x00005618f9a804e2 in _PyObject_Vectorcall (kwnames=<optimized out>, nargsf=<optimized out>, 
    args=<optimized out>, callable=<optimized out>) at ./Include/cpython/abstract.h:127
#82 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, tstate=0x5618fa11a0f0)
    at Python/ceval.c:4987
#83 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3486
#84 0x00005618f9a79b17 in function_code_fastcall (co=<optimized out>, args=<optimized out>, nargs=0, 
    globals=<optimized out>) at Objects/call.c:283
#85 0x00005618f9a80bbe in _PyObject_Vectorcall (kwnames=<optimized out>, nargsf=<optimized out>, 
    args=<optimized out>, callable=<optimized out>) at ./Include/cpython/abstract.h:127
#86 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, tstate=0x5618fa11a0f0)
    at Python/ceval.c:4987
#87 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3500
#88 0x00005618f9a79b17 in function_code_fastcall (co=<optimized out>, args=<optimized out>, nargs=1, 
    globals=<optimized out>) at Objects/call.c:283
#89 0x00005618f9a82596 in _PyObject_Vectorcall (kwnames=<optimized out>, nargsf=<optimized out>, 
    args=<optimized out>, callable=<optimized out>) at ./Include/cpython/abstract.h:127
#90 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, tstate=0x5618fa11a0f0)
    at Python/ceval.c:4987
#91 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3469
#92 0x00005618f9a79b17 in function_code_fastcall (co=<optimized out>, args=<optimized out>, nargs=1, 
    globals=<optimized out>) at Objects/call.c:283
#93 0x00005618f9c56b85 in _PyObject_Vectorcall (kwnames=0x0, nargsf=1, args=0x5618fa2d9470, 
    callable=0x7f49d2cf3700) at ./Include/cpython/abstract.h:127
#94 method_vectorcall (method=<optimized out>, args=0x5618fa2d9478, nargsf=<optimized out>, kwnames=0x0)
    at Objects/classobject.c:60
#95 0x00005618f9a82596 in _PyObject_Vectorcall (kwnames=<optimized out>, nargsf=<optimized out>, 
    args=<optimized out>, callable=<optimized out>) at ./Include/cpython/abstract.h:127
#96 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, tstate=0x5618fa11a0f0)
    at Python/ceval.c:4987
#97 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3469
#98 0x00005618f9a79b17 in function_code_fastcall (co=<optimized out>, args=<optimized out>, nargs=0, 
    globals=<optimized out>) at Objects/call.c:283
#99 0x00005618f9a80bbe in _PyObject_Vectorcall (kwnames=<optimized out>, nargsf=<optimized out>, 
    args=<optimized out>, callable=<optimized out>) at ./Include/cpython/abstract.h:127
#100 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, tstate=0x5618fa11a0f0)
    at Python/ceval.c:4987
#101 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3500
#102 0x00005618f9b575c0 in PyEval_EvalFrameEx (throwflag=0, f=0x7f49d416c440) at Python/ceval.c:741
#103 _PyEval_EvalCodeWithName (_co=_co@entry=0x7f49d40a6450, globals=globals@entry=0x7f49d40e76f0, 
    locals=locals@entry=0x7f49d41c8e10, args=args@entry=0x0, argcount=argcount@entry=0, 
    kwnames=kwnames@entry=0x0, kwargs=0x0, kwcount=0, kwstep=2, defs=0x0, defcount=0, kwdefs=0x0, 
    closure=0x0, name=0x0, qualname=0x0) at Python/ceval.c:4298
#104 0x00005618f9b57663 in PyEval_EvalCodeEx (closure=0x0, kwdefs=0x0, defcount=0, defs=0x0, kwcount=0, 
    kws=0x0, argcount=0, args=0x0, locals=locals@entry=0x7f49d41c8e10, 
    globals=globals@entry=0x7f49d40e76f0, _co=_co@entry=0x7f49d40a6450) at Python/ceval.c:4327
#105 PyEval_EvalCode (co=co@entry=0x7f49d40a6450, globals=globals@entry=0x7f49d41d0480, 
    locals=locals@entry=0x7f49d41d0480) at Python/ceval.c:718
#106 0x00005618f9ba26fe in run_eval_code_obj (locals=0x7f49d41d0480, globals=0x7f49d41d0480, 
    co=0x7f49d40a6450) at Python/pythonrun.c:1125
#107 run_mod (arena=0x7f49d41c8e10, flags=0x7ffe0c9ba448, locals=0x7f49d41d0480, globals=0x7f49d41d0480, 
    filename=0x7f49d40e76f0, mod=0x5618fa2dd360) at Python/pythonrun.c:1147
#108 PyRun_FileExFlags (fp=0x5618fa167110, filename_str=<optimized out>, start=<optimized out>, 
    globals=0x7f49d41d0480, locals=0x7f49d41d0480, closeit=1, flags=0x7ffe0c9ba448)
    at Python/pythonrun.c:1063
#109 0x00005618f9ba295d in PyRun_SimpleFileExFlags (fp=0x5618fa167110, filename=<optimized out>, closeit=1, 
    flags=0x7ffe0c9ba448) at Python/pythonrun.c:428
#110 0x00005618f9a85330 in pymain_run_file (cf=0x7ffe0c9ba448, config=0x5618fa119100) at Modules/main.c:381
#111 pymain_run_python (exitcode=0x7ffe0c9ba440) at Modules/main.c:565
#112 Py_RunMain () at Modules/main.c:644
#113 0x00005618f9a857e6 in pymain_main (args=0x7ffe0c9ba530) at Modules/main.c:674
#114 Py_BytesMain (argc=<optimized out>, argv=<optimized out>) at Modules/main.c:698
#115 0x00007f49d32b5b97 in __libc_start_main (main=0x5618f9a79aa0 <main>, argc=13, argv=0x7ffe0c9ba688, 
    init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffe0c9ba678)
    at ../csu/libc-start.c:310
#116 0x00005618f9a8451a in _start ()
Detaching from program: /src/pants/build-support/virtualenvs/Linux/pants_dev_deps.py38.venv/bin/python3, process 5861