Segfault on FreeBSD (stack overflow?) #2755

josephg · 2026-02-03T05:37:46Z

josephg
Feb 3, 2026

Issue Description

I'm getting inconsistent segfaults running stalwart on freebsd. The latest one happened when I tried to connect Outlook via IMAP.

I'm not sure whats causing the crash. Its happening in the stack overflow handler, but I can't see any stack overflows here. Might be memory corruption or something else.

I've taken to running stalwart in release mode with:

[profile.release]
opt-level = 2
debug = 1
# strip disabled
# lto disabled

So I can get a stack trace:

Full stack trace

$ lldb stalwart -c stalwart-default.core
Core file '/home/seph/stalwart-data/stalwart-default.core' (x86_64) was loaded.
(lldb) bt all
* thread #1, name = 'stalwart-default', stop reason = signal SIGSEGV
  * frame #0: 0x0000334163f61e07 libc.so.7`___lldb_unnamed_symbol6091 + 135
    frame #1: 0x0000334163f61fba libc.so.7`___lldb_unnamed_symbol6092 + 362
    frame #2: 0x0000334163f133a7 libc.so.7`___lldb_unnamed_symbol5410 + 279
    frame #3: 0x0000334161d545b4 libthr.so.3`pthread_attr_init + 36
    frame #4: 0x0000333940c4566b stalwart-default`std::sys::pal::unix::stack_overflow::imp::make_handler::h692d3819da4cb366 + 59
    frame #5: 0x0000333940c45f31 stalwart-default`std::sys::thread::unix::Thread::new::thread_start::h01b7af14f94536d0 + 33
    frame #6: 0x0000334161d56b52 libthr.so.3`___lldb_unnamed_symbol565 + 306
  thread #2, name = 'stalwart-default', stop reason = signal SIGSEGV
    frame #0: 0x0000334161d53e7c libthr.so.3`___lldb_unnamed_symbol555 + 12
    frame #1: 0x0000334161d63c92 libthr.so.3`___lldb_unnamed_symbol751 + 82
    frame #2: 0x0000334161d55a11 libthr.so.3`___lldb_unnamed_symbol561 + 577
    frame #3: 0x0000333940af81b9 stalwart-default`parking_lot::condvar::Condvar::wait_until_internal::h16604ac12b0b1f0d [inlined] _$LT$parking_lot_core..thread_parker..imp..ThreadParker$u20$as$u20$parking_lot_core..thread_parker..ThreadParkerT$GT$::park::h1934371b6c034270 at unix.rs:77:21
    frame #4: 0x0000333940af818f stalwart-default`parking_lot::condvar::Condvar::wait_until_internal::h16604ac12b0b1f0d [inlined] parking_lot_core::parking_lot::park::_$u7b$$u7b$closure$u7d$$u7d$::hd3913fad79c3fd64 at parking_lot.rs:635:36
    frame #5: 0x0000333940af80ba stalwart-default`parking_lot::condvar::Condvar::wait_until_internal::h16604ac12b0b1f0d [inlined] parking_lot_core::parking_lot::with_thread_data::h5e30eafb81805ec2 at parking_lot.rs:207:5
    frame #6: 0x0000333940af7f80 stalwart-default`parking_lot::condvar::Condvar::wait_until_internal::h16604ac12b0b1f0d [inlined] parking_lot_core::parking_lot::park::h7287aa61b885a280 at parking_lot.rs:600:5
    frame #7: 0x0000333940af7f80 stalwart-default`parking_lot::condvar::Condvar::wait_until_internal::h16604ac12b0b1f0d at condvar.rs:334:17
    frame #8: 0x0000333940ad49ce stalwart-default`tokio::runtime::park::Inner::park::h42a26143b89e5fbc [inlined] parking_lot::condvar::Condvar::wait::h97f166e1f0d890d6 at condvar.rs:256:14
    frame #9: 0x0000333940ad49c0 stalwart-default`tokio::runtime::park::Inner::park::h42a26143b89e5fbc [inlined] tokio::loom::std::parking_lot::Condvar::wait::h198e9d8764ff1485 at parking_lot.rs:161:16
    frame #10: 0x0000333940ad49c0 stalwart-default`tokio::runtime::park::Inner::park::h42a26143b89e5fbc at park.rs:112:30
    frame #11: 0x000033393d314c50 stalwart-default`tokio::runtime::park::CachedParkThread::block_on::haa1a1d0e912c73c5 at park.rs:289:18
    frame #12: 0x000033393da909ec stalwart-default`tokio::runtime::context::runtime::enter_runtime::h35ed8e312dd6f32b [inlined] tokio::runtime::context::blocking::BlockingRegionGuard::block_on::h0050a7bd1cba698f at blocking.rs:66:14
    frame #13: 0x000033393da909e4 stalwart-default`tokio::runtime::context::runtime::enter_runtime::h35ed8e312dd6f32b [inlined] tokio::runtime::scheduler::multi_thread::MultiThread::block_on::_$u7b$$u7b$closure$u7d$$u7d$::habd6c640728b7dff at mod.rs:87:22
    frame #14: 0x000033393da909e4 stalwart-default`tokio::runtime::context::runtime::enter_runtime::h35ed8e312dd6f32b at runtime.rs:65:16
    frame #15: 0x000033393d8f3eaf stalwart-default`tokio::runtime::runtime::Runtime::block_on::hb0cd1b149b85ef78 [inlined] tokio::runtime::scheduler::multi_thread::MultiThread::block_on::hd3a090bf9706ec3c at mod.rs:86:9
    frame #16: 0x000033393d8f3e98 stalwart-default`tokio::runtime::runtime::Runtime::block_on::hb0cd1b149b85ef78 [inlined] tokio::runtime::runtime::Runtime::block_on_inner::hfb76ce9b31f5a2d0 at runtime.rs:370:50
    frame #17: 0x000033393d8f3e70 stalwart-default`tokio::runtime::runtime::Runtime::block_on::hb0cd1b149b85ef78 at runtime.rs:342:18
    frame #18: 0x000033393e114e74 stalwart-default`stalwart::main::h4a0f7da58e199a44 at main.rs:114:7
    frame #19: 0x000033393d43ba13 stalwart-default`std::sys::backtrace::__rust_begin_short_backtrace::h73ee02573061599c [inlined] core::ops::function::FnOnce::call_once::h0fd2dd7d5e5a1987 at function.rs:250:5
    frame #20: 0x000033393d43ba11 stalwart-default`std::sys::backtrace::__rust_begin_short_backtrace::h73ee02573061599c at backtrace.rs:158:18
    frame #21: 0x000033393d47b50d stalwart-default`std::rt::lang_start::_$u7b$$u7b$closure$u7d$$u7d$::h61ba8f3e6e707abe at rt.rs:206:18
    frame #22: 0x0000333940c63c45 stalwart-default`std::rt::lang_start_internal::h6477cbf8740d94f3 + 117
    frame #23: 0x000033393e114f5c stalwart-default`main + 44
    frame #24: 0x0000334163e1fe34 libc.so.7`__libc_start1 + 292
    frame #25: 0x000033393d2be8e1 stalwart-default`_start at crt1_s.S:80
  thread #3, name = 'tokio-runtime-worke', stop reason = signal SIGSEGV
    frame #0: 0x0000334163ed437a libc.so.7`__sys_kevent + 10
    frame #1: 0x0000334161d62b24 libthr.so.3`___lldb_unnamed_symbol733 + 84
    frame #2: 0x0000333940af4812 stalwart-default`mio::poll::Poll::poll::ha529f8ca1290ed85 [inlined] mio::sys::unix::selector::Selector::select::hc105f4136cfcbbfe at mod.rs:8:28
    frame #3: 0x0000333940af47b8 stalwart-default`mio::poll::Poll::poll::ha529f8ca1290ed85 at poll.rs:437:32
    frame #4: 0x0000333940ae137f stalwart-default`tokio::runtime::io::driver::Driver::turn::hf914a2edb30ca1e8 at driver.rs:188:25
    frame #5: 0x0000333940ae2987 stalwart-default`tokio::runtime::time::Driver::park_internal::h53a876d70108245d at mod.rs:0
    frame #6: 0x0000333940ad5e4e stalwart-default`tokio::runtime::scheduler::multi_thread::park::Parker::park::h15243015ae69844b [inlined] tokio::runtime::scheduler::multi_thread::park::Inner::park_driver::hca1bbe57adc36784 at park.rs:194:16
    frame #7: 0x0000333940ad5e49 stalwart-default`tokio::runtime::scheduler::multi_thread::park::Parker::park::h15243015ae69844b [inlined] tokio::runtime::scheduler::multi_thread::park::Inner::park::h30360da4d8655abf at park.rs:127:18
    frame #8: 0x0000333940ad5e12 stalwart-default`tokio::runtime::scheduler::multi_thread::park::Parker::park::h15243015ae69844b at park.rs:70:20
    frame #9: 0x0000333940aca92a stalwart-default`tokio::runtime::scheduler::multi_thread::worker::Context::park_timeout::hdf902c70455ae571 at worker.rs:769:18
    frame #10: 0x0000333940acb59f stalwart-default`tokio::runtime::scheduler::multi_thread::worker::Context::run::h9ccf11e2cc2685c8 [inlined] tokio::runtime::scheduler::multi_thread::worker::Context::park::h45aaea3291994f4d at worker.rs:737:29
    frame #11: 0x0000333940acb4ca stalwart-default`tokio::runtime::scheduler::multi_thread::worker::Context::run::h9ccf11e2cc2685c8 at worker.rs:557:26
    frame #12: 0x0000333940ac77c6 stalwart-default`tokio::runtime::context::scoped::Scoped$LT$T$GT$::set::h05e9c5774b6c42c5 [inlined] tokio::runtime::scheduler::multi_thread::worker::run::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::hc9da0a4538a2a15d at worker.rs:504:24
    frame #13: 0x0000333940ac77ae stalwart-default`tokio::runtime::context::scoped::Scoped$LT$T$GT$::set::h05e9c5774b6c42c5 at scoped.rs:40:9
    frame #14: 0x0000333940ac7b2a stalwart-default`tokio::runtime::context::runtime::enter_runtime::h73d26d575b734d73 [inlined] tokio::runtime::context::set_scheduler::_$u7b$$u7b$closure$u7d$$u7d$::hf0f3404a54ae4be6 at context.rs:176:38
    frame #15: 0x0000333940ac7b13 stalwart-default`tokio::runtime::context::runtime::enter_runtime::h73d26d575b734d73 [inlined] std::thread::local::LocalKey$LT$T$GT$::try_with::h1e43fcdce287939a at local.rs:508:12
    frame #16: 0x0000333940ac7af8 stalwart-default`tokio::runtime::context::runtime::enter_runtime::h73d26d575b734d73 [inlined] std::thread::local::LocalKey$LT$T$GT$::with::hf69ec144d01fe78d at local.rs:472:20
    frame #17: 0x0000333940ac7af8 stalwart-default`tokio::runtime::context::runtime::enter_runtime::h73d26d575b734d73 [inlined] tokio::runtime::context::set_scheduler::h58628466e21f3c60 at context.rs:176:17
    frame #18: 0x0000333940ac7af8 stalwart-default`tokio::runtime::context::runtime::enter_runtime::h73d26d575b734d73 [inlined] tokio::runtime::scheduler::multi_thread::worker::run::_$u7b$$u7b$closure$u7d$$u7d$::h01843f819c2b3b25 at worker.rs:499:9
    frame #19: 0x0000333940ac7af8 stalwart-default`tokio::runtime::context::runtime::enter_runtime::h73d26d575b734d73 at runtime.rs:65:16
    frame #20: 0x0000333940ac93f5 stalwart-default`tokio::runtime::scheduler::multi_thread::worker::run::h72bad17583cdede3 at worker.rs:491:5
    frame #21: 0x0000333940adddbd stalwart-default`_$LT$tokio..runtime..blocking..task..BlockingTask$LT$T$GT$$u20$as$u20$core..future..future..Future$GT$::poll::h832eb1ccb4633245 [inlined] tokio::runtime::scheduler::multi_thread::worker::Launch::launch::_$u7b$$u7b$closure$u7d$$u7d$::h195f9095cf51060b at worker.rs:457:45
    frame #22: 0x0000333940adddb4 stalwart-default`_$LT$tokio..runtime..blocking..task..BlockingTask$LT$T$GT$$u20$as$u20$core..future..future..Future$GT$::poll::h832eb1ccb4633245 at task.rs:42:21
    frame #23: 0x0000333940ae4957 stalwart-default`tokio::runtime::task::core::Core$LT$T$C$S$GT$::poll::h2ccdcb77e62fba31 [inlined] tokio::runtime::task::core::Core$LT$T$C$S$GT$::poll::_$u7b$$u7b$closure$u7d$$u7d$::ha7546b65ca795eda at core.rs:365:24
    frame #24: 0x0000333940ae48b0 stalwart-default`tokio::runtime::task::core::Core$LT$T$C$S$GT$::poll::h2ccdcb77e62fba31 [inlined] tokio::loom::std::unsafe_cell::UnsafeCell$LT$T$GT$::with_mut::h38a10e3ebb3cb9b5 at unsafe_cell.rs:16:9
    frame #25: 0x0000333940ae48b0 stalwart-default`tokio::runtime::task::core::Core$LT$T$C$S$GT$::poll::h2ccdcb77e62fba31 at core.rs:354:30
    frame #26: 0x0000333940ac510e stalwart-default`tokio::runtime::task::harness::Harness$LT$T$C$S$GT$::poll::hbbf2c0501a61c90c [inlined] tokio::runtime::task::harness::poll_future::_$u7b$$u7b$closure$u7d$$u7d$::h4e05cde29ed72983 at harness.rs:535:30
    frame #27: 0x0000333940ac5106 stalwart-default`tokio::runtime::task::harness::Harness$LT$T$C$S$GT$::poll::hbbf2c0501a61c90c [inlined] _$LT$core..panic..unwind_safe..AssertUnwindSafe$LT$F$GT$$u20$as$u20$core..ops..function..FnOnce$LT$$LP$$RP$$GT$$GT$::call_once::h5aa5e085f7026c35 at unwind_safe.rs:274:9
    frame #28: 0x0000333940ac5106 stalwart-default`tokio::runtime::task::harness::Harness$LT$T$C$S$GT$::poll::hbbf2c0501a61c90c [inlined] std::panicking::catch_unwind::do_call::h4d6d8c4bd0640132 at panicking.rs:590:40
    frame #29: 0x0000333940ac50ff stalwart-default`tokio::runtime::task::harness::Harness$LT$T$C$S$GT$::poll::hbbf2c0501a61c90c [inlined] std::panicking::catch_unwind::h9c9244a5dac2c255 at panicking.rs:553:19
    frame #30: 0x0000333940ac50f1 stalwart-default`tokio::runtime::task::harness::Harness$LT$T$C$S$GT$::poll::hbbf2c0501a61c90c [inlined] std::panic::catch_unwind::hf7ba5346f258f217 at panic.rs:359:14
    frame #31: 0x0000333940ac50f1 stalwart-default`tokio::runtime::task::harness::Harness$LT$T$C$S$GT$::poll::hbbf2c0501a61c90c [inlined] tokio::runtime::task::harness::poll_future::h451419446c20921e at harness.rs:523:18
    frame #32: 0x0000333940ac50f1 stalwart-default`tokio::runtime::task::harness::Harness$LT$T$C$S$GT$::poll::hbbf2c0501a61c90c [inlined] tokio::runtime::task::harness::Harness$LT$T$C$S$GT$::poll_inner::h2004329bf4ac86ed at harness.rs:210:27
    frame #33: 0x0000333940ac506c stalwart-default`tokio::runtime::task::harness::Harness$LT$T$C$S$GT$::poll::hbbf2c0501a61c90c at harness.rs:155:20
    frame #34: 0x0000333940ad1f94 stalwart-default`tokio::runtime::blocking::pool::Inner::run::h64d1cdf28842d8e3 [inlined] tokio::runtime::task::raw::RawTask::poll::hc40c52c70be22b2c at raw.rs:255:18
    frame #35: 0x0000333940ad1f8b stalwart-default`tokio::runtime::blocking::pool::Inner::run::h64d1cdf28842d8e3 [inlined] tokio::runtime::task::UnownedTask$LT$S$GT$::run::hf27710ace5222263 at mod.rs:546:13
    frame #36: 0x0000333940ad1f8b stalwart-default`tokio::runtime::blocking::pool::Inner::run::h64d1cdf28842d8e3 [inlined] tokio::runtime::blocking::pool::Task::run::h114003c596d1c234 at pool.rs:161:19
    frame #37: 0x0000333940ad1f8b stalwart-default`tokio::runtime::blocking::pool::Inner::run::h64d1cdf28842d8e3 at pool.rs:516:22
    frame #38: 0x0000333940ae6f0a stalwart-default`std::sys::backtrace::__rust_begin_short_backtrace::h9d129d583be95be7 [inlined] tokio::runtime::blocking::pool::Spawner::spawn_thread::_$u7b$$u7b$closure$u7d$$u7d$::ha62e64f103edd59c at pool.rs:474:47
    frame #39: 0x0000333940ae6e0d stalwart-default`std::sys::backtrace::__rust_begin_short_backtrace::h9d129d583be95be7 at backtrace.rs:158:18
    frame #40: 0x0000333940aea5c2 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h6074cd43568bcdb0 [inlined] std::thread::Builder::spawn_unchecked_::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::hbd4522a8e273eb6d at mod.rs:562:17
    frame #41: 0x0000333940aea57b stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h6074cd43568bcdb0 [inlined] _$LT$core..panic..unwind_safe..AssertUnwindSafe$LT$F$GT$$u20$as$u20$core..ops..function..FnOnce$LT$$LP$$RP$$GT$$GT$::call_once::ha62eeaf5519c607d at unwind_safe.rs:274:9
    frame #42: 0x0000333940aea562 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h6074cd43568bcdb0 [inlined] std::panicking::catch_unwind::do_call::h1621a4352b1e143f at panicking.rs:590:40
    frame #43: 0x0000333940aea562 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h6074cd43568bcdb0 [inlined] std::panicking::catch_unwind::h626d23c91f90199e at panicking.rs:553:19
    frame #44: 0x0000333940aea562 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h6074cd43568bcdb0 [inlined] std::panic::catch_unwind::hfda3d758ca36613b at panic.rs:359:14
    frame #45: 0x0000333940aea562 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h6074cd43568bcdb0 [inlined] std::thread::Builder::spawn_unchecked_::_$u7b$$u7b$closure$u7d$$u7d$::h3e69d3e360ea5d0c at mod.rs:560:30
    frame #46: 0x0000333940aea4f4 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h6074cd43568bcdb0 at function.rs:250:5
    frame #47: 0x0000333940c45f47 stalwart-default`std::sys::thread::unix::Thread::new::thread_start::h01b7af14f94536d0 + 55
    frame #48: 0x0000334161d56b52 libthr.so.3`___lldb_unnamed_symbol565 + 306
  thread #4, name = 'tokio-runtime-worke', stop reason = signal SIGSEGV
    frame #0: 0x0000334161d53e7c libthr.so.3`___lldb_unnamed_symbol555 + 12
    frame #1: 0x0000334161d63c92 libthr.so.3`___lldb_unnamed_symbol751 + 82
    frame #2: 0x0000334161d55a11 libthr.so.3`___lldb_unnamed_symbol561 + 577
    frame #3: 0x0000333940af81b9 stalwart-default`parking_lot::condvar::Condvar::wait_until_internal::h16604ac12b0b1f0d [inlined] _$LT$parking_lot_core..thread_parker..imp..ThreadParker$u20$as$u20$parking_lot_core..thread_parker..ThreadParkerT$GT$::park::h1934371b6c034270 at unix.rs:77:21
    frame #4: 0x0000333940af818f stalwart-default`parking_lot::condvar::Condvar::wait_until_internal::h16604ac12b0b1f0d [inlined] parking_lot_core::parking_lot::park::_$u7b$$u7b$closure$u7d$$u7d$::hd3913fad79c3fd64 at parking_lot.rs:635:36
    frame #5: 0x0000333940af80ba stalwart-default`parking_lot::condvar::Condvar::wait_until_internal::h16604ac12b0b1f0d [inlined] parking_lot_core::parking_lot::with_thread_data::h5e30eafb81805ec2 at parking_lot.rs:207:5
    frame #6: 0x0000333940af7f80 stalwart-default`parking_lot::condvar::Condvar::wait_until_internal::h16604ac12b0b1f0d [inlined] parking_lot_core::parking_lot::park::h7287aa61b885a280 at parking_lot.rs:600:5
    frame #7: 0x0000333940af7f80 stalwart-default`parking_lot::condvar::Condvar::wait_until_internal::h16604ac12b0b1f0d at condvar.rs:334:17
    frame #8: 0x0000333940ad5ede stalwart-default`tokio::runtime::scheduler::multi_thread::park::Parker::park::h15243015ae69844b [inlined] parking_lot::condvar::Condvar::wait::h97f166e1f0d890d6 at condvar.rs:256:14
    frame #9: 0x0000333940ad5ed0 stalwart-default`tokio::runtime::scheduler::multi_thread::park::Parker::park::h15243015ae69844b [inlined] tokio::loom::std::parking_lot::Condvar::wait::h198e9d8764ff1485 at parking_lot.rs:161:16
    frame #10: 0x0000333940ad5ed0 stalwart-default`tokio::runtime::scheduler::multi_thread::park::Parker::park::h15243015ae69844b [inlined] tokio::runtime::scheduler::multi_thread::park::Inner::park_condvar::h04fb038440b180de at park.rs:158:30
    frame #11: 0x0000333940ad5e98 stalwart-default`tokio::runtime::scheduler::multi_thread::park::Parker::park::h15243015ae69844b [inlined] tokio::runtime::scheduler::multi_thread::park::Inner::park::h30360da4d8655abf at park.rs:129:18
    frame #12: 0x0000333940ad5e12 stalwart-default`tokio::runtime::scheduler::multi_thread::park::Parker::park::h15243015ae69844b at park.rs:70:20
    frame #13: 0x0000333940aca92a stalwart-default`tokio::runtime::scheduler::multi_thread::worker::Context::park_timeout::hdf902c70455ae571 at worker.rs:769:18
    frame #14: 0x0000333940acb59f stalwart-default`tokio::runtime::scheduler::multi_thread::worker::Context::run::h9ccf11e2cc2685c8 [inlined] tokio::runtime::scheduler::multi_thread::worker::Context::park::h45aaea3291994f4d at worker.rs:737:29
    frame #15: 0x0000333940acb4ca stalwart-default`tokio::runtime::scheduler::multi_thread::worker::Context::run::h9ccf11e2cc2685c8 at worker.rs:557:26
    frame #16: 0x0000333940ac77c6 stalwart-default`tokio::runtime::context::scoped::Scoped$LT$T$GT$::set::h05e9c5774b6c42c5 [inlined] tokio::runtime::scheduler::multi_thread::worker::run::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::hc9da0a4538a2a15d at worker.rs:504:24
    frame #17: 0x0000333940ac77ae stalwart-default`tokio::runtime::context::scoped::Scoped$LT$T$GT$::set::h05e9c5774b6c42c5 at scoped.rs:40:9
    frame #18: 0x0000333940ac7b2a stalwart-default`tokio::runtime::context::runtime::enter_runtime::h73d26d575b734d73 [inlined] tokio::runtime::context::set_scheduler::_$u7b$$u7b$closure$u7d$$u7d$::hf0f3404a54ae4be6 at context.rs:176:38
    frame #19: 0x0000333940ac7b13 stalwart-default`tokio::runtime::context::runtime::enter_runtime::h73d26d575b734d73 [inlined] std::thread::local::LocalKey$LT$T$GT$::try_with::h1e43fcdce287939a at local.rs:508:12
    frame #20: 0x0000333940ac7af8 stalwart-default`tokio::runtime::context::runtime::enter_runtime::h73d26d575b734d73 [inlined] std::thread::local::LocalKey$LT$T$GT$::with::hf69ec144d01fe78d at local.rs:472:20
    frame #21: 0x0000333940ac7af8 stalwart-default`tokio::runtime::context::runtime::enter_runtime::h73d26d575b734d73 [inlined] tokio::runtime::context::set_scheduler::h58628466e21f3c60 at context.rs:176:17
    frame #22: 0x0000333940ac7af8 stalwart-default`tokio::runtime::context::runtime::enter_runtime::h73d26d575b734d73 [inlined] tokio::runtime::scheduler::multi_thread::worker::run::_$u7b$$u7b$closure$u7d$$u7d$::h01843f819c2b3b25 at worker.rs:499:9
    frame #23: 0x0000333940ac7af8 stalwart-default`tokio::runtime::context::runtime::enter_runtime::h73d26d575b734d73 at runtime.rs:65:16
    frame #24: 0x0000333940ac93f5 stalwart-default`tokio::runtime::scheduler::multi_thread::worker::run::h72bad17583cdede3 at worker.rs:491:5
    frame #25: 0x0000333940adddbd stalwart-default`_$LT$tokio..runtime..blocking..task..BlockingTask$LT$T$GT$$u20$as$u20$core..future..future..Future$GT$::poll::h832eb1ccb4633245 [inlined] tokio::runtime::scheduler::multi_thread::worker::Launch::launch::_$u7b$$u7b$closure$u7d$$u7d$::h195f9095cf51060b at worker.rs:457:45
    frame #26: 0x0000333940adddb4 stalwart-default`_$LT$tokio..runtime..blocking..task..BlockingTask$LT$T$GT$$u20$as$u20$core..future..future..Future$GT$::poll::h832eb1ccb4633245 at task.rs:42:21
    frame #27: 0x0000333940ae4957 stalwart-default`tokio::runtime::task::core::Core$LT$T$C$S$GT$::poll::h2ccdcb77e62fba31 [inlined] tokio::runtime::task::core::Core$LT$T$C$S$GT$::poll::_$u7b$$u7b$closure$u7d$$u7d$::ha7546b65ca795eda at core.rs:365:24
    frame #28: 0x0000333940ae48b0 stalwart-default`tokio::runtime::task::core::Core$LT$T$C$S$GT$::poll::h2ccdcb77e62fba31 [inlined] tokio::loom::std::unsafe_cell::UnsafeCell$LT$T$GT$::with_mut::h38a10e3ebb3cb9b5 at unsafe_cell.rs:16:9
    frame #29: 0x0000333940ae48b0 stalwart-default`tokio::runtime::task::core::Core$LT$T$C$S$GT$::poll::h2ccdcb77e62fba31 at core.rs:354:30
    frame #30: 0x0000333940ac510e stalwart-default`tokio::runtime::task::harness::Harness$LT$T$C$S$GT$::poll::hbbf2c0501a61c90c [inlined] tokio::runtime::task::harness::poll_future::_$u7b$$u7b$closure$u7d$$u7d$::h4e05cde29ed72983 at harness.rs:535:30
    frame #31: 0x0000333940ac5106 stalwart-default`tokio::runtime::task::harness::Harness$LT$T$C$S$GT$::poll::hbbf2c0501a61c90c [inlined] _$LT$core..panic..unwind_safe..AssertUnwindSafe$LT$F$GT$$u20$as$u20$core..ops..function..FnOnce$LT$$LP$$RP$$GT$$GT$::call_once::h5aa5e085f7026c35 at unwind_safe.rs:274:9
    frame #32: 0x0000333940ac5106 stalwart-default`tokio::runtime::task::harness::Harness$LT$T$C$S$GT$::poll::hbbf2c0501a61c90c [inlined] std::panicking::catch_unwind::do_call::h4d6d8c4bd0640132 at panicking.rs:590:40
    frame #33: 0x0000333940ac50ff stalwart-default`tokio::runtime::task::harness::Harness$LT$T$C$S$GT$::poll::hbbf2c0501a61c90c [inlined] std::panicking::catch_unwind::h9c9244a5dac2c255 at panicking.rs:553:19
    frame #34: 0x0000333940ac50f1 stalwart-default`tokio::runtime::task::harness::Harness$LT$T$C$S$GT$::poll::hbbf2c0501a61c90c [inlined] std::panic::catch_unwind::hf7ba5346f258f217 at panic.rs:359:14
    frame #35: 0x0000333940ac50f1 stalwart-default`tokio::runtime::task::harness::Harness$LT$T$C$S$GT$::poll::hbbf2c0501a61c90c [inlined] tokio::runtime::task::harness::poll_future::h451419446c20921e at harness.rs:523:18
    frame #36: 0x0000333940ac50f1 stalwart-default`tokio::runtime::task::harness::Harness$LT$T$C$S$GT$::poll::hbbf2c0501a61c90c [inlined] tokio::runtime::task::harness::Harness$LT$T$C$S$GT$::poll_inner::h2004329bf4ac86ed at harness.rs:210:27
    frame #37: 0x0000333940ac506c stalwart-default`tokio::runtime::task::harness::Harness$LT$T$C$S$GT$::poll::hbbf2c0501a61c90c at harness.rs:155:20
    frame #38: 0x0000333940ad1f94 stalwart-default`tokio::runtime::blocking::pool::Inner::run::h64d1cdf28842d8e3 [inlined] tokio::runtime::task::raw::RawTask::poll::hc40c52c70be22b2c at raw.rs:255:18
    frame #39: 0x0000333940ad1f8b stalwart-default`tokio::runtime::blocking::pool::Inner::run::h64d1cdf28842d8e3 [inlined] tokio::runtime::task::UnownedTask$LT$S$GT$::run::hf27710ace5222263 at mod.rs:546:13
    frame #40: 0x0000333940ad1f8b stalwart-default`tokio::runtime::blocking::pool::Inner::run::h64d1cdf28842d8e3 [inlined] tokio::runtime::blocking::pool::Task::run::h114003c596d1c234 at pool.rs:161:19
    frame #41: 0x0000333940ad1f8b stalwart-default`tokio::runtime::blocking::pool::Inner::run::h64d1cdf28842d8e3 at pool.rs:516:22
    frame #42: 0x0000333940ae6f0a stalwart-default`std::sys::backtrace::__rust_begin_short_backtrace::h9d129d583be95be7 [inlined] tokio::runtime::blocking::pool::Spawner::spawn_thread::_$u7b$$u7b$closure$u7d$$u7d$::ha62e64f103edd59c at pool.rs:474:47
    frame #43: 0x0000333940ae6e0d stalwart-default`std::sys::backtrace::__rust_begin_short_backtrace::h9d129d583be95be7 at backtrace.rs:158:18
    frame #44: 0x0000333940aea5c2 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h6074cd43568bcdb0 [inlined] std::thread::Builder::spawn_unchecked_::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::hbd4522a8e273eb6d at mod.rs:562:17
    frame #45: 0x0000333940aea57b stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h6074cd43568bcdb0 [inlined] _$LT$core..panic..unwind_safe..AssertUnwindSafe$LT$F$GT$$u20$as$u20$core..ops..function..FnOnce$LT$$LP$$RP$$GT$$GT$::call_once::ha62eeaf5519c607d at unwind_safe.rs:274:9
    frame #46: 0x0000333940aea562 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h6074cd43568bcdb0 [inlined] std::panicking::catch_unwind::do_call::h1621a4352b1e143f at panicking.rs:590:40
    frame #47: 0x0000333940aea562 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h6074cd43568bcdb0 [inlined] std::panicking::catch_unwind::h626d23c91f90199e at panicking.rs:553:19
    frame #48: 0x0000333940aea562 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h6074cd43568bcdb0 [inlined] std::panic::catch_unwind::hfda3d758ca36613b at panic.rs:359:14
    frame #49: 0x0000333940aea562 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h6074cd43568bcdb0 [inlined] std::thread::Builder::spawn_unchecked_::_$u7b$$u7b$closure$u7d$$u7d$::h3e69d3e360ea5d0c at mod.rs:560:30
    frame #50: 0x0000333940aea4f4 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h6074cd43568bcdb0 at function.rs:250:5
    frame #51: 0x0000333940c45f47 stalwart-default`std::sys::thread::unix::Thread::new::thread_start::h01b7af14f94536d0 + 55
    frame #52: 0x0000334161d56b52 libthr.so.3`___lldb_unnamed_symbol565 + 306
  thread #5, name = 'tokio-runtime-worke', stop reason = signal SIGSEGV
    frame #0: 0x0000334161d53e7c libthr.so.3`___lldb_unnamed_symbol555 + 12
    frame #1: 0x0000334161d63c92 libthr.so.3`___lldb_unnamed_symbol751 + 82
    frame #2: 0x0000334161d55a11 libthr.so.3`___lldb_unnamed_symbol561 + 577
    frame #3: 0x0000333940af81b9 stalwart-default`parking_lot::condvar::Condvar::wait_until_internal::h16604ac12b0b1f0d [inlined] _$LT$parking_lot_core..thread_parker..imp..ThreadParker$u20$as$u20$parking_lot_core..thread_parker..ThreadParkerT$GT$::park::h1934371b6c034270 at unix.rs:77:21
    frame #4: 0x0000333940af818f stalwart-default`parking_lot::condvar::Condvar::wait_until_internal::h16604ac12b0b1f0d [inlined] parking_lot_core::parking_lot::park::_$u7b$$u7b$closure$u7d$$u7d$::hd3913fad79c3fd64 at parking_lot.rs:635:36
    frame #5: 0x0000333940af80ba stalwart-default`parking_lot::condvar::Condvar::wait_until_internal::h16604ac12b0b1f0d [inlined] parking_lot_core::parking_lot::with_thread_data::h5e30eafb81805ec2 at parking_lot.rs:207:5
    frame #6: 0x0000333940af7f80 stalwart-default`parking_lot::condvar::Condvar::wait_until_internal::h16604ac12b0b1f0d [inlined] parking_lot_core::parking_lot::park::h7287aa61b885a280 at parking_lot.rs:600:5
    frame #7: 0x0000333940af7f80 stalwart-default`parking_lot::condvar::Condvar::wait_until_internal::h16604ac12b0b1f0d at condvar.rs:334:17
    frame #8: 0x0000333940ad5ede stalwart-default`tokio::runtime::scheduler::multi_thread::park::Parker::park::h15243015ae69844b [inlined] parking_lot::condvar::Condvar::wait::h97f166e1f0d890d6 at condvar.rs:256:14
    frame #9: 0x0000333940ad5ed0 stalwart-default`tokio::runtime::scheduler::multi_thread::park::Parker::park::h15243015ae69844b [inlined] tokio::loom::std::parking_lot::Condvar::wait::h198e9d8764ff1485 at parking_lot.rs:161:16
    frame #10: 0x0000333940ad5ed0 stalwart-default`tokio::runtime::scheduler::multi_thread::park::Parker::park::h15243015ae69844b [inlined] tokio::runtime::scheduler::multi_thread::park::Inner::park_condvar::h04fb038440b180de at park.rs:158:30
    frame #11: 0x0000333940ad5e98 stalwart-default`tokio::runtime::scheduler::multi_thread::park::Parker::park::h15243015ae69844b [inlined] tokio::runtime::scheduler::multi_thread::park::Inner::park::h30360da4d8655abf at park.rs:129:18
    frame #12: 0x0000333940ad5e12 stalwart-default`tokio::runtime::scheduler::multi_thread::park::Parker::park::h15243015ae69844b at park.rs:70:20
    frame #13: 0x0000333940aca92a stalwart-default`tokio::runtime::scheduler::multi_thread::worker::Context::park_timeout::hdf902c70455ae571 at worker.rs:769:18
    frame #14: 0x0000333940acb59f stalwart-default`tokio::runtime::scheduler::multi_thread::worker::Context::run::h9ccf11e2cc2685c8 [inlined] tokio::runtime::scheduler::multi_thread::worker::Context::park::h45aaea3291994f4d at worker.rs:737:29
    frame #15: 0x0000333940acb4ca stalwart-default`tokio::runtime::scheduler::multi_thread::worker::Context::run::h9ccf11e2cc2685c8 at worker.rs:557:26
    frame #16: 0x0000333940ac77c6 stalwart-default`tokio::runtime::context::scoped::Scoped$LT$T$GT$::set::h05e9c5774b6c42c5 [inlined] tokio::runtime::scheduler::multi_thread::worker::run::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::hc9da0a4538a2a15d at worker.rs:504:24
    frame #17: 0x0000333940ac77ae stalwart-default`tokio::runtime::context::scoped::Scoped$LT$T$GT$::set::h05e9c5774b6c42c5 at scoped.rs:40:9
    frame #18: 0x0000333940ac7b2a stalwart-default`tokio::runtime::context::runtime::enter_runtime::h73d26d575b734d73 [inlined] tokio::runtime::context::set_scheduler::_$u7b$$u7b$closure$u7d$$u7d$::hf0f3404a54ae4be6 at context.rs:176:38
    frame #19: 0x0000333940ac7b13 stalwart-default`tokio::runtime::context::runtime::enter_runtime::h73d26d575b734d73 [inlined] std::thread::local::LocalKey$LT$T$GT$::try_with::h1e43fcdce287939a at local.rs:508:12
    frame #20: 0x0000333940ac7af8 stalwart-default`tokio::runtime::context::runtime::enter_runtime::h73d26d575b734d73 [inlined] std::thread::local::LocalKey$LT$T$GT$::with::hf69ec144d01fe78d at local.rs:472:20
    frame #21: 0x0000333940ac7af8 stalwart-default`tokio::runtime::context::runtime::enter_runtime::h73d26d575b734d73 [inlined] tokio::runtime::context::set_scheduler::h58628466e21f3c60 at context.rs:176:17
    frame #22: 0x0000333940ac7af8 stalwart-default`tokio::runtime::context::runtime::enter_runtime::h73d26d575b734d73 [inlined] tokio::runtime::scheduler::multi_thread::worker::run::_$u7b$$u7b$closure$u7d$$u7d$::h01843f819c2b3b25 at worker.rs:499:9
    frame #23: 0x0000333940ac7af8 stalwart-default`tokio::runtime::context::runtime::enter_runtime::h73d26d575b734d73 at runtime.rs:65:16
    frame #24: 0x0000333940ac93f5 stalwart-default`tokio::runtime::scheduler::multi_thread::worker::run::h72bad17583cdede3 at worker.rs:491:5
    frame #25: 0x0000333940adddbd stalwart-default`_$LT$tokio..runtime..blocking..task..BlockingTask$LT$T$GT$$u20$as$u20$core..future..future..Future$GT$::poll::h832eb1ccb4633245 [inlined] tokio::runtime::scheduler::multi_thread::worker::Launch::launch::_$u7b$$u7b$closure$u7d$$u7d$::h195f9095cf51060b at worker.rs:457:45
    frame #26: 0x0000333940adddb4 stalwart-default`_$LT$tokio..runtime..blocking..task..BlockingTask$LT$T$GT$$u20$as$u20$core..future..future..Future$GT$::poll::h832eb1ccb4633245 at task.rs:42:21
    frame #27: 0x0000333940ae4957 stalwart-default`tokio::runtime::task::core::Core$LT$T$C$S$GT$::poll::h2ccdcb77e62fba31 [inlined] tokio::runtime::task::core::Core$LT$T$C$S$GT$::poll::_$u7b$$u7b$closure$u7d$$u7d$::ha7546b65ca795eda at core.rs:365:24
    frame #28: 0x0000333940ae48b0 stalwart-default`tokio::runtime::task::core::Core$LT$T$C$S$GT$::poll::h2ccdcb77e62fba31 [inlined] tokio::loom::std::unsafe_cell::UnsafeCell$LT$T$GT$::with_mut::h38a10e3ebb3cb9b5 at unsafe_cell.rs:16:9
    frame #29: 0x0000333940ae48b0 stalwart-default`tokio::runtime::task::core::Core$LT$T$C$S$GT$::poll::h2ccdcb77e62fba31 at core.rs:354:30
    frame #30: 0x0000333940ac510e stalwart-default`tokio::runtime::task::harness::Harness$LT$T$C$S$GT$::poll::hbbf2c0501a61c90c [inlined] tokio::runtime::task::harness::poll_future::_$u7b$$u7b$closure$u7d$$u7d$::h4e05cde29ed72983 at harness.rs:535:30
    frame #31: 0x0000333940ac5106 stalwart-default`tokio::runtime::task::harness::Harness$LT$T$C$S$GT$::poll::hbbf2c0501a61c90c [inlined] _$LT$core..panic..unwind_safe..AssertUnwindSafe$LT$F$GT$$u20$as$u20$core..ops..function..FnOnce$LT$$LP$$RP$$GT$$GT$::call_once::h5aa5e085f7026c35 at unwind_safe.rs:274:9
    frame #32: 0x0000333940ac5106 stalwart-default`tokio::runtime::task::harness::Harness$LT$T$C$S$GT$::poll::hbbf2c0501a61c90c [inlined] std::panicking::catch_unwind::do_call::h4d6d8c4bd0640132 at panicking.rs:590:40
    frame #33: 0x0000333940ac50ff stalwart-default`tokio::runtime::task::harness::Harness$LT$T$C$S$GT$::poll::hbbf2c0501a61c90c [inlined] std::panicking::catch_unwind::h9c9244a5dac2c255 at panicking.rs:553:19
    frame #34: 0x0000333940ac50f1 stalwart-default`tokio::runtime::task::harness::Harness$LT$T$C$S$GT$::poll::hbbf2c0501a61c90c [inlined] std::panic::catch_unwind::hf7ba5346f258f217 at panic.rs:359:14
    frame #35: 0x0000333940ac50f1 stalwart-default`tokio::runtime::task::harness::Harness$LT$T$C$S$GT$::poll::hbbf2c0501a61c90c [inlined] tokio::runtime::task::harness::poll_future::h451419446c20921e at harness.rs:523:18
    frame #36: 0x0000333940ac50f1 stalwart-default`tokio::runtime::task::harness::Harness$LT$T$C$S$GT$::poll::hbbf2c0501a61c90c [inlined] tokio::runtime::task::harness::Harness$LT$T$C$S$GT$::poll_inner::h2004329bf4ac86ed at harness.rs:210:27
    frame #37: 0x0000333940ac506c stalwart-default`tokio::runtime::task::harness::Harness$LT$T$C$S$GT$::poll::hbbf2c0501a61c90c at harness.rs:155:20
    frame #38: 0x0000333940ad1f94 stalwart-default`tokio::runtime::blocking::pool::Inner::run::h64d1cdf28842d8e3 [inlined] tokio::runtime::task::raw::RawTask::poll::hc40c52c70be22b2c at raw.rs:255:18
    frame #39: 0x0000333940ad1f8b stalwart-default`tokio::runtime::blocking::pool::Inner::run::h64d1cdf28842d8e3 [inlined] tokio::runtime::task::UnownedTask$LT$S$GT$::run::hf27710ace5222263 at mod.rs:546:13
    frame #40: 0x0000333940ad1f8b stalwart-default`tokio::runtime::blocking::pool::Inner::run::h64d1cdf28842d8e3 [inlined] tokio::runtime::blocking::pool::Task::run::h114003c596d1c234 at pool.rs:161:19
    frame #41: 0x0000333940ad1f8b stalwart-default`tokio::runtime::blocking::pool::Inner::run::h64d1cdf28842d8e3 at pool.rs:516:22
    frame #42: 0x0000333940ae6f0a stalwart-default`std::sys::backtrace::__rust_begin_short_backtrace::h9d129d583be95be7 [inlined] tokio::runtime::blocking::pool::Spawner::spawn_thread::_$u7b$$u7b$closure$u7d$$u7d$::ha62e64f103edd59c at pool.rs:474:47
    frame #43: 0x0000333940ae6e0d stalwart-default`std::sys::backtrace::__rust_begin_short_backtrace::h9d129d583be95be7 at backtrace.rs:158:18
    frame #44: 0x0000333940aea5c2 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h6074cd43568bcdb0 [inlined] std::thread::Builder::spawn_unchecked_::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::hbd4522a8e273eb6d at mod.rs:562:17
    frame #45: 0x0000333940aea57b stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h6074cd43568bcdb0 [inlined] _$LT$core..panic..unwind_safe..AssertUnwindSafe$LT$F$GT$$u20$as$u20$core..ops..function..FnOnce$LT$$LP$$RP$$GT$$GT$::call_once::ha62eeaf5519c607d at unwind_safe.rs:274:9
    frame #46: 0x0000333940aea562 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h6074cd43568bcdb0 [inlined] std::panicking::catch_unwind::do_call::h1621a4352b1e143f at panicking.rs:590:40
    frame #47: 0x0000333940aea562 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h6074cd43568bcdb0 [inlined] std::panicking::catch_unwind::h626d23c91f90199e at panicking.rs:553:19
    frame #48: 0x0000333940aea562 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h6074cd43568bcdb0 [inlined] std::panic::catch_unwind::hfda3d758ca36613b at panic.rs:359:14
    frame #49: 0x0000333940aea562 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h6074cd43568bcdb0 [inlined] std::thread::Builder::spawn_unchecked_::_$u7b$$u7b$closure$u7d$$u7d$::h3e69d3e360ea5d0c at mod.rs:560:30
    frame #50: 0x0000333940aea4f4 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h6074cd43568bcdb0 at function.rs:250:5
    frame #51: 0x0000333940c45f47 stalwart-default`std::sys::thread::unix::Thread::new::thread_start::h01b7af14f94536d0 + 55
    frame #52: 0x0000334161d56b52 libthr.so.3`___lldb_unnamed_symbol565 + 306
  thread #6, name = 'tokio-runtime-worke', stop reason = signal SIGSEGV
    frame #0: 0x0000334161d53e7c libthr.so.3`___lldb_unnamed_symbol555 + 12
    frame #1: 0x0000334161d63c92 libthr.so.3`___lldb_unnamed_symbol751 + 82
    frame #2: 0x0000334161d55a11 libthr.so.3`___lldb_unnamed_symbol561 + 577
    frame #3: 0x0000333940af81b9 stalwart-default`parking_lot::condvar::Condvar::wait_until_internal::h16604ac12b0b1f0d [inlined] _$LT$parking_lot_core..thread_parker..imp..ThreadParker$u20$as$u20$parking_lot_core..thread_parker..ThreadParkerT$GT$::park::h1934371b6c034270 at unix.rs:77:21
    frame #4: 0x0000333940af818f stalwart-default`parking_lot::condvar::Condvar::wait_until_internal::h16604ac12b0b1f0d [inlined] parking_lot_core::parking_lot::park::_$u7b$$u7b$closure$u7d$$u7d$::hd3913fad79c3fd64 at parking_lot.rs:635:36
    frame #5: 0x0000333940af80ba stalwart-default`parking_lot::condvar::Condvar::wait_until_internal::h16604ac12b0b1f0d [inlined] parking_lot_core::parking_lot::with_thread_data::h5e30eafb81805ec2 at parking_lot.rs:207:5
    frame #6: 0x0000333940af7f80 stalwart-default`parking_lot::condvar::Condvar::wait_until_internal::h16604ac12b0b1f0d [inlined] parking_lot_core::parking_lot::park::h7287aa61b885a280 at parking_lot.rs:600:5
    frame #7: 0x0000333940af7f80 stalwart-default`parking_lot::condvar::Condvar::wait_until_internal::h16604ac12b0b1f0d at condvar.rs:334:17
    frame #8: 0x0000333940ad5ede stalwart-default`tokio::runtime::scheduler::multi_thread::park::Parker::park::h15243015ae69844b [inlined] parking_lot::condvar::Condvar::wait::h97f166e1f0d890d6 at condvar.rs:256:14
    frame #9: 0x0000333940ad5ed0 stalwart-default`tokio::runtime::scheduler::multi_thread::park::Parker::park::h15243015ae69844b [inlined] tokio::loom::std::parking_lot::Condvar::wait::h198e9d8764ff1485 at parking_lot.rs:161:16
    frame #10: 0x0000333940ad5ed0 stalwart-default`tokio::runtime::scheduler::multi_thread::park::Parker::park::h15243015ae69844b [inlined] tokio::runtime::scheduler::multi_thread::park::Inner::park_condvar::h04fb038440b180de at park.rs:158:30
    frame #11: 0x0000333940ad5e98 stalwart-default`tokio::runtime::scheduler::multi_thread::park::Parker::park::h15243015ae69844b [inlined] tokio::runtime::scheduler::multi_thread::park::Inner::park::h30360da4d8655abf at park.rs:129:18
    frame #12: 0x0000333940ad5e12 stalwart-default`tokio::runtime::scheduler::multi_thread::park::Parker::park::h15243015ae69844b at park.rs:70:20
    frame #13: 0x0000333940aca92a stalwart-default`tokio::runtime::scheduler::multi_thread::worker::Context::park_timeout::hdf902c70455ae571 at worker.rs:769:18
    frame #14: 0x0000333940acb59f stalwart-default`tokio::runtime::scheduler::multi_thread::worker::Context::run::h9ccf11e2cc2685c8 [inlined] tokio::runtime::scheduler::multi_thread::worker::Context::park::h45aaea3291994f4d at worker.rs:737:29
    frame #15: 0x0000333940acb4ca stalwart-default`tokio::runtime::scheduler::multi_thread::worker::Context::run::h9ccf11e2cc2685c8 at worker.rs:557:26
    frame #16: 0x0000333940ac77c6 stalwart-default`tokio::runtime::context::scoped::Scoped$LT$T$GT$::set::h05e9c5774b6c42c5 [inlined] tokio::runtime::scheduler::multi_thread::worker::run::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::hc9da0a4538a2a15d at worker.rs:504:24
    frame #17: 0x0000333940ac77ae stalwart-default`tokio::runtime::context::scoped::Scoped$LT$T$GT$::set::h05e9c5774b6c42c5 at scoped.rs:40:9
    frame #18: 0x0000333940ac7b2a stalwart-default`tokio::runtime::context::runtime::enter_runtime::h73d26d575b734d73 [inlined] tokio::runtime::context::set_scheduler::_$u7b$$u7b$closure$u7d$$u7d$::hf0f3404a54ae4be6 at context.rs:176:38
    frame #19: 0x0000333940ac7b13 stalwart-default`tokio::runtime::context::runtime::enter_runtime::h73d26d575b734d73 [inlined] std::thread::local::LocalKey$LT$T$GT$::try_with::h1e43fcdce287939a at local.rs:508:12
    frame #20: 0x0000333940ac7af8 stalwart-default`tokio::runtime::context::runtime::enter_runtime::h73d26d575b734d73 [inlined] std::thread::local::LocalKey$LT$T$GT$::with::hf69ec144d01fe78d at local.rs:472:20
    frame #21: 0x0000333940ac7af8 stalwart-default`tokio::runtime::context::runtime::enter_runtime::h73d26d575b734d73 [inlined] tokio::runtime::context::set_scheduler::h58628466e21f3c60 at context.rs:176:17
    frame #22: 0x0000333940ac7af8 stalwart-default`tokio::runtime::context::runtime::enter_runtime::h73d26d575b734d73 [inlined] tokio::runtime::scheduler::multi_thread::worker::run::_$u7b$$u7b$closure$u7d$$u7d$::h01843f819c2b3b25 at worker.rs:499:9
    frame #23: 0x0000333940ac7af8 stalwart-default`tokio::runtime::context::runtime::enter_runtime::h73d26d575b734d73 at runtime.rs:65:16
    frame #24: 0x0000333940ac93f5 stalwart-default`tokio::runtime::scheduler::multi_thread::worker::run::h72bad17583cdede3 at worker.rs:491:5
    frame #25: 0x0000333940adddbd stalwart-default`_$LT$tokio..runtime..blocking..task..BlockingTask$LT$T$GT$$u20$as$u20$core..future..future..Future$GT$::poll::h832eb1ccb4633245 [inlined] tokio::runtime::scheduler::multi_thread::worker::Launch::launch::_$u7b$$u7b$closure$u7d$$u7d$::h195f9095cf51060b at worker.rs:457:45
    frame #26: 0x0000333940adddb4 stalwart-default`_$LT$tokio..runtime..blocking..task..BlockingTask$LT$T$GT$$u20$as$u20$core..future..future..Future$GT$::poll::h832eb1ccb4633245 at task.rs:42:21
    frame #27: 0x0000333940ae4957 stalwart-default`tokio::runtime::task::core::Core$LT$T$C$S$GT$::poll::h2ccdcb77e62fba31 [inlined] tokio::runtime::task::core::Core$LT$T$C$S$GT$::poll::_$u7b$$u7b$closure$u7d$$u7d$::ha7546b65ca795eda at core.rs:365:24
    frame #28: 0x0000333940ae48b0 stalwart-default`tokio::runtime::task::core::Core$LT$T$C$S$GT$::poll::h2ccdcb77e62fba31 [inlined] tokio::loom::std::unsafe_cell::UnsafeCell$LT$T$GT$::with_mut::h38a10e3ebb3cb9b5 at unsafe_cell.rs:16:9
    frame #29: 0x0000333940ae48b0 stalwart-default`tokio::runtime::task::core::Core$LT$T$C$S$GT$::poll::h2ccdcb77e62fba31 at core.rs:354:30
    frame #30: 0x0000333940ac510e stalwart-default`tokio::runtime::task::harness::Harness$LT$T$C$S$GT$::poll::hbbf2c0501a61c90c [inlined] tokio::runtime::task::harness::poll_future::_$u7b$$u7b$closure$u7d$$u7d$::h4e05cde29ed72983 at harness.rs:535:30
    frame #31: 0x0000333940ac5106 stalwart-default`tokio::runtime::task::harness::Harness$LT$T$C$S$GT$::poll::hbbf2c0501a61c90c [inlined] _$LT$core..panic..unwind_safe..AssertUnwindSafe$LT$F$GT$$u20$as$u20$core..ops..function..FnOnce$LT$$LP$$RP$$GT$$GT$::call_once::h5aa5e085f7026c35 at unwind_safe.rs:274:9
    frame #32: 0x0000333940ac5106 stalwart-default`tokio::runtime::task::harness::Harness$LT$T$C$S$GT$::poll::hbbf2c0501a61c90c [inlined] std::panicking::catch_unwind::do_call::h4d6d8c4bd0640132 at panicking.rs:590:40
    frame #33: 0x0000333940ac50ff stalwart-default`tokio::runtime::task::harness::Harness$LT$T$C$S$GT$::poll::hbbf2c0501a61c90c [inlined] std::panicking::catch_unwind::h9c9244a5dac2c255 at panicking.rs:553:19
    frame #34: 0x0000333940ac50f1 stalwart-default`tokio::runtime::task::harness::Harness$LT$T$C$S$GT$::poll::hbbf2c0501a61c90c [inlined] std::panic::catch_unwind::hf7ba5346f258f217 at panic.rs:359:14
    frame #35: 0x0000333940ac50f1 stalwart-default`tokio::runtime::task::harness::Harness$LT$T$C$S$GT$::poll::hbbf2c0501a61c90c [inlined] tokio::runtime::task::harness::poll_future::h451419446c20921e at harness.rs:523:18
    frame #36: 0x0000333940ac50f1 stalwart-default`tokio::runtime::task::harness::Harness$LT$T$C$S$GT$::poll::hbbf2c0501a61c90c [inlined] tokio::runtime::task::harness::Harness$LT$T$C$S$GT$::poll_inner::h2004329bf4ac86ed at harness.rs:210:27
    frame #37: 0x0000333940ac506c stalwart-default`tokio::runtime::task::harness::Harness$LT$T$C$S$GT$::poll::hbbf2c0501a61c90c at harness.rs:155:20
    frame #38: 0x0000333940ad1f94 stalwart-default`tokio::runtime::blocking::pool::Inner::run::h64d1cdf28842d8e3 [inlined] tokio::runtime::task::raw::RawTask::poll::hc40c52c70be22b2c at raw.rs:255:18
    frame #39: 0x0000333940ad1f8b stalwart-default`tokio::runtime::blocking::pool::Inner::run::h64d1cdf28842d8e3 [inlined] tokio::runtime::task::UnownedTask$LT$S$GT$::run::hf27710ace5222263 at mod.rs:546:13
    frame #40: 0x0000333940ad1f8b stalwart-default`tokio::runtime::blocking::pool::Inner::run::h64d1cdf28842d8e3 [inlined] tokio::runtime::blocking::pool::Task::run::h114003c596d1c234 at pool.rs:161:19
    frame #41: 0x0000333940ad1f8b stalwart-default`tokio::runtime::blocking::pool::Inner::run::h64d1cdf28842d8e3 at pool.rs:516:22
    frame #42: 0x0000333940ae6f0a stalwart-default`std::sys::backtrace::__rust_begin_short_backtrace::h9d129d583be95be7 [inlined] tokio::runtime::blocking::pool::Spawner::spawn_thread::_$u7b$$u7b$closure$u7d$$u7d$::ha62e64f103edd59c at pool.rs:474:47
    frame #43: 0x0000333940ae6e0d stalwart-default`std::sys::backtrace::__rust_begin_short_backtrace::h9d129d583be95be7 at backtrace.rs:158:18
    frame #44: 0x0000333940aea5c2 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h6074cd43568bcdb0 [inlined] std::thread::Builder::spawn_unchecked_::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::hbd4522a8e273eb6d at mod.rs:562:17
    frame #45: 0x0000333940aea57b stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h6074cd43568bcdb0 [inlined] _$LT$core..panic..unwind_safe..AssertUnwindSafe$LT$F$GT$$u20$as$u20$core..ops..function..FnOnce$LT$$LP$$RP$$GT$$GT$::call_once::ha62eeaf5519c607d at unwind_safe.rs:274:9
    frame #46: 0x0000333940aea562 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h6074cd43568bcdb0 [inlined] std::panicking::catch_unwind::do_call::h1621a4352b1e143f at panicking.rs:590:40
    frame #47: 0x0000333940aea562 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h6074cd43568bcdb0 [inlined] std::panicking::catch_unwind::h626d23c91f90199e at panicking.rs:553:19
    frame #48: 0x0000333940aea562 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h6074cd43568bcdb0 [inlined] std::panic::catch_unwind::hfda3d758ca36613b at panic.rs:359:14
    frame #49: 0x0000333940aea562 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h6074cd43568bcdb0 [inlined] std::thread::Builder::spawn_unchecked_::_$u7b$$u7b$closure$u7d$$u7d$::h3e69d3e360ea5d0c at mod.rs:560:30
    frame #50: 0x0000333940aea4f4 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h6074cd43568bcdb0 at function.rs:250:5
    frame #51: 0x0000333940c45f47 stalwart-default`std::sys::thread::unix::Thread::new::thread_start::h01b7af14f94536d0 + 55
    frame #52: 0x0000334161d56b52 libthr.so.3`___lldb_unnamed_symbol565 + 306
  thread #7, name = 'r2d2-worker-0', stop reason = signal SIGSEGV
    frame #0: 0x0000334161d53e7c libthr.so.3`___lldb_unnamed_symbol555 + 12
    frame #1: 0x0000334161d63c92 libthr.so.3`___lldb_unnamed_symbol751 + 82
    frame #2: 0x0000334161d55a11 libthr.so.3`___lldb_unnamed_symbol561 + 577
    frame #3: 0x0000333940af8204 stalwart-default`parking_lot::condvar::Condvar::wait_until_internal::h16604ac12b0b1f0d [inlined] _$LT$parking_lot_core..thread_parker..imp..ThreadParker$u20$as$u20$parking_lot_core..thread_parker..ThreadParkerT$GT$::park_until::h4ac28c05517583b8 at unix.rs:97:25
    frame #4: 0x0000333940af81c5 stalwart-default`parking_lot::condvar::Condvar::wait_until_internal::h16604ac12b0b1f0d [inlined] parking_lot_core::parking_lot::park::_$u7b$$u7b$closure$u7d$$u7d$::hd3913fad79c3fd64 at parking_lot.rs:633:49
    frame #5: 0x0000333940af80ba stalwart-default`parking_lot::condvar::Condvar::wait_until_internal::h16604ac12b0b1f0d [inlined] parking_lot_core::parking_lot::with_thread_data::h5e30eafb81805ec2 at parking_lot.rs:207:5
    frame #6: 0x0000333940af7f80 stalwart-default`parking_lot::condvar::Condvar::wait_until_internal::h16604ac12b0b1f0d [inlined] parking_lot_core::parking_lot::park::h7287aa61b885a280 at parking_lot.rs:600:5
    frame #7: 0x0000333940af7f80 stalwart-default`parking_lot::condvar::Condvar::wait_until_internal::h16604ac12b0b1f0d at condvar.rs:334:17
    frame #8: 0x000033394061ac7c stalwart-default`scheduled_thread_pool::Worker::run::hcaea097a5f9ea52c [inlined] scheduled_thread_pool::Worker::get_job::h496aa8e8d59ee766 at lib.rs:0
    frame #9: 0x000033394061ac40 stalwart-default`scheduled_thread_pool::Worker::run::hcaea097a5f9ea52c at lib.rs:379:36
    frame #10: 0x000033394061b774 stalwart-default`std::sys::backtrace::__rust_begin_short_backtrace::hfb6828b2f8672e71 [inlined] scheduled_thread_pool::Worker::start::_$u7b$$u7b$closure$u7d$$u7d$::h92a915a8489cfab0 at lib.rs:375:37
    frame #11: 0x000033394061b76f stalwart-default`std::sys::backtrace::__rust_begin_short_backtrace::hfb6828b2f8672e71 at backtrace.rs:158:18
    frame #12: 0x000033394061cdae stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h3a8a8a61e3cf7e17 [inlined] std::thread::Builder::spawn_unchecked_::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::h9af032e32735312b at mod.rs:562:17
    frame #13: 0x000033394061cd90 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h3a8a8a61e3cf7e17 [inlined] _$LT$core..panic..unwind_safe..AssertUnwindSafe$LT$F$GT$$u20$as$u20$core..ops..function..FnOnce$LT$$LP$$RP$$GT$$GT$::call_once::he43698404cff35c6 at unwind_safe.rs:274:9
    frame #14: 0x000033394061cd73 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h3a8a8a61e3cf7e17 [inlined] std::panicking::catch_unwind::do_call::hce2235897a8036d9 at panicking.rs:590:40
    frame #15: 0x000033394061cd73 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h3a8a8a61e3cf7e17 [inlined] std::panicking::catch_unwind::ha2d3d2b1b0ebd9a1 at panicking.rs:553:19
    frame #16: 0x000033394061cd73 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h3a8a8a61e3cf7e17 [inlined] std::panic::catch_unwind::h15596ece0e42d628 at panic.rs:359:14
    frame #17: 0x000033394061cd73 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h3a8a8a61e3cf7e17 [inlined] std::thread::Builder::spawn_unchecked_::_$u7b$$u7b$closure$u7d$$u7d$::hac15f22d78cb4eab at mod.rs:560:30
    frame #18: 0x000033394061cd21 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h3a8a8a61e3cf7e17 at function.rs:250:5
    frame #19: 0x0000333940c45f47 stalwart-default`std::sys::thread::unix::Thread::new::thread_start::h01b7af14f94536d0 + 55
    frame #20: 0x0000334161d56b52 libthr.so.3`___lldb_unnamed_symbol565 + 306
  thread #8, name = 'r2d2-worker-1', stop reason = signal SIGSEGV
    frame #0: 0x0000334161d53e7c libthr.so.3`___lldb_unnamed_symbol555 + 12
    frame #1: 0x0000334161d63c92 libthr.so.3`___lldb_unnamed_symbol751 + 82
    frame #2: 0x0000334161d55a11 libthr.so.3`___lldb_unnamed_symbol561 + 577
    frame #3: 0x0000333940af8204 stalwart-default`parking_lot::condvar::Condvar::wait_until_internal::h16604ac12b0b1f0d [inlined] _$LT$parking_lot_core..thread_parker..imp..ThreadParker$u20$as$u20$parking_lot_core..thread_parker..ThreadParkerT$GT$::park_until::h4ac28c05517583b8 at unix.rs:97:25
    frame #4: 0x0000333940af81c5 stalwart-default`parking_lot::condvar::Condvar::wait_until_internal::h16604ac12b0b1f0d [inlined] parking_lot_core::parking_lot::park::_$u7b$$u7b$closure$u7d$$u7d$::hd3913fad79c3fd64 at parking_lot.rs:633:49
    frame #5: 0x0000333940af80ba stalwart-default`parking_lot::condvar::Condvar::wait_until_internal::h16604ac12b0b1f0d [inlined] parking_lot_core::parking_lot::with_thread_data::h5e30eafb81805ec2 at parking_lot.rs:207:5
    frame #6: 0x0000333940af7f80 stalwart-default`parking_lot::condvar::Condvar::wait_until_internal::h16604ac12b0b1f0d [inlined] parking_lot_core::parking_lot::park::h7287aa61b885a280 at parking_lot.rs:600:5
    frame #7: 0x0000333940af7f80 stalwart-default`parking_lot::condvar::Condvar::wait_until_internal::h16604ac12b0b1f0d at condvar.rs:334:17
    frame #8: 0x000033394061ac7c stalwart-default`scheduled_thread_pool::Worker::run::hcaea097a5f9ea52c [inlined] scheduled_thread_pool::Worker::get_job::h496aa8e8d59ee766 at lib.rs:0
    frame #9: 0x000033394061ac40 stalwart-default`scheduled_thread_pool::Worker::run::hcaea097a5f9ea52c at lib.rs:379:36
    frame #10: 0x000033394061b774 stalwart-default`std::sys::backtrace::__rust_begin_short_backtrace::hfb6828b2f8672e71 [inlined] scheduled_thread_pool::Worker::start::_$u7b$$u7b$closure$u7d$$u7d$::h92a915a8489cfab0 at lib.rs:375:37
    frame #11: 0x000033394061b76f stalwart-default`std::sys::backtrace::__rust_begin_short_backtrace::hfb6828b2f8672e71 at backtrace.rs:158:18
    frame #12: 0x000033394061cdae stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h3a8a8a61e3cf7e17 [inlined] std::thread::Builder::spawn_unchecked_::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::h9af032e32735312b at mod.rs:562:17
    frame #13: 0x000033394061cd90 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h3a8a8a61e3cf7e17 [inlined] _$LT$core..panic..unwind_safe..AssertUnwindSafe$LT$F$GT$$u20$as$u20$core..ops..function..FnOnce$LT$$LP$$RP$$GT$$GT$::call_once::he43698404cff35c6 at unwind_safe.rs:274:9
    frame #14: 0x000033394061cd73 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h3a8a8a61e3cf7e17 [inlined] std::panicking::catch_unwind::do_call::hce2235897a8036d9 at panicking.rs:590:40
    frame #15: 0x000033394061cd73 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h3a8a8a61e3cf7e17 [inlined] std::panicking::catch_unwind::ha2d3d2b1b0ebd9a1 at panicking.rs:553:19
    frame #16: 0x000033394061cd73 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h3a8a8a61e3cf7e17 [inlined] std::panic::catch_unwind::h15596ece0e42d628 at panic.rs:359:14
    frame #17: 0x000033394061cd73 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h3a8a8a61e3cf7e17 [inlined] std::thread::Builder::spawn_unchecked_::_$u7b$$u7b$closure$u7d$$u7d$::hac15f22d78cb4eab at mod.rs:560:30
    frame #18: 0x000033394061cd21 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h3a8a8a61e3cf7e17 at function.rs:250:5
    frame #19: 0x0000333940c45f47 stalwart-default`std::sys::thread::unix::Thread::new::thread_start::h01b7af14f94536d0 + 55
    frame #20: 0x0000334161d56b52 libthr.so.3`___lldb_unnamed_symbol565 + 306
  thread #9, name = 'r2d2-worker-2', stop reason = signal SIGSEGV
    frame #0: 0x0000334161d53e7c libthr.so.3`___lldb_unnamed_symbol555 + 12
    frame #1: 0x0000334161d63c92 libthr.so.3`___lldb_unnamed_symbol751 + 82
    frame #2: 0x0000334161d55a11 libthr.so.3`___lldb_unnamed_symbol561 + 577
    frame #3: 0x0000333940af8204 stalwart-default`parking_lot::condvar::Condvar::wait_until_internal::h16604ac12b0b1f0d [inlined] _$LT$parking_lot_core..thread_parker..imp..ThreadParker$u20$as$u20$parking_lot_core..thread_parker..ThreadParkerT$GT$::park_until::h4ac28c05517583b8 at unix.rs:97:25
    frame #4: 0x0000333940af81c5 stalwart-default`parking_lot::condvar::Condvar::wait_until_internal::h16604ac12b0b1f0d [inlined] parking_lot_core::parking_lot::park::_$u7b$$u7b$closure$u7d$$u7d$::hd3913fad79c3fd64 at parking_lot.rs:633:49
    frame #5: 0x0000333940af80ba stalwart-default`parking_lot::condvar::Condvar::wait_until_internal::h16604ac12b0b1f0d [inlined] parking_lot_core::parking_lot::with_thread_data::h5e30eafb81805ec2 at parking_lot.rs:207:5
    frame #6: 0x0000333940af7f80 stalwart-default`parking_lot::condvar::Condvar::wait_until_internal::h16604ac12b0b1f0d [inlined] parking_lot_core::parking_lot::park::h7287aa61b885a280 at parking_lot.rs:600:5
    frame #7: 0x0000333940af7f80 stalwart-default`parking_lot::condvar::Condvar::wait_until_internal::h16604ac12b0b1f0d at condvar.rs:334:17
    frame #8: 0x000033394061ac7c stalwart-default`scheduled_thread_pool::Worker::run::hcaea097a5f9ea52c [inlined] scheduled_thread_pool::Worker::get_job::h496aa8e8d59ee766 at lib.rs:0
    frame #9: 0x000033394061ac40 stalwart-default`scheduled_thread_pool::Worker::run::hcaea097a5f9ea52c at lib.rs:379:36
    frame #10: 0x000033394061b774 stalwart-default`std::sys::backtrace::__rust_begin_short_backtrace::hfb6828b2f8672e71 [inlined] scheduled_thread_pool::Worker::start::_$u7b$$u7b$closure$u7d$$u7d$::h92a915a8489cfab0 at lib.rs:375:37
    frame #11: 0x000033394061b76f stalwart-default`std::sys::backtrace::__rust_begin_short_backtrace::hfb6828b2f8672e71 at backtrace.rs:158:18
    frame #12: 0x000033394061cdae stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h3a8a8a61e3cf7e17 [inlined] std::thread::Builder::spawn_unchecked_::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::h9af032e32735312b at mod.rs:562:17
    frame #13: 0x000033394061cd90 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h3a8a8a61e3cf7e17 [inlined] _$LT$core..panic..unwind_safe..AssertUnwindSafe$LT$F$GT$$u20$as$u20$core..ops..function..FnOnce$LT$$LP$$RP$$GT$$GT$::call_once::he43698404cff35c6 at unwind_safe.rs:274:9
    frame #14: 0x000033394061cd73 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h3a8a8a61e3cf7e17 [inlined] std::panicking::catch_unwind::do_call::hce2235897a8036d9 at panicking.rs:590:40
    frame #15: 0x000033394061cd73 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h3a8a8a61e3cf7e17 [inlined] std::panicking::catch_unwind::ha2d3d2b1b0ebd9a1 at panicking.rs:553:19
    frame #16: 0x000033394061cd73 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h3a8a8a61e3cf7e17 [inlined] std::panic::catch_unwind::h15596ece0e42d628 at panic.rs:359:14
    frame #17: 0x000033394061cd73 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h3a8a8a61e3cf7e17 [inlined] std::thread::Builder::spawn_unchecked_::_$u7b$$u7b$closure$u7d$$u7d$::hac15f22d78cb4eab at mod.rs:560:30
    frame #18: 0x000033394061cd21 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h3a8a8a61e3cf7e17 at function.rs:250:5
    frame #19: 0x0000333940c45f47 stalwart-default`std::sys::thread::unix::Thread::new::thread_start::h01b7af14f94536d0 + 55
    frame #20: 0x0000334161d56b52 libthr.so.3`___lldb_unnamed_symbol565 + 306
  thread #10, name = 'stalwart-default', stop reason = signal SIGSEGV
    frame #0: 0x0000334163ed329a libc.so.7`__sys__umtx_op + 10
    frame #1: 0x0000333940c657eb stalwart-default`std::sys::sync::condvar::futex::Condvar::wait::hb32d617ac465f804 + 75
    frame #2: 0x00003339401da0a2 stalwart-default`rayon_core::sleep::Sleep::sleep::h85a50b2547982aab [inlined] std::sync::poison::condvar::Condvar::wait::ha3cb9d4d93e42460 at condvar.rs:127:24
    frame #3: 0x00003339401da099 stalwart-default`rayon_core::sleep::Sleep::sleep::h85a50b2547982aab at mod.rs:187:50
    frame #4: 0x00003339401d2743 stalwart-default`rayon_core::registry::WorkerThread::wait_until_cold::hc749d45235955c8b [inlined] rayon_core::sleep::Sleep::no_work_found::hb1fd51f61e55c926 at mod.rs:106:18
    frame #5: 0x00003339401d2718 stalwart-default`rayon_core::registry::WorkerThread::wait_until_cold::hc749d45235955c8b at registry.rs:806:26
    frame #6: 0x00003339401d2b39 stalwart-default`rayon_core::registry::ThreadBuilder::run::h5cbe4e59729e50ae [inlined] rayon_core::registry::WorkerThread::wait_until::h5f5c7fb114af26e4 at registry.rs:775:18
    frame #7: 0x00003339401d2b23 stalwart-default`rayon_core::registry::ThreadBuilder::run::h5cbe4e59729e50ae [inlined] rayon_core::registry::WorkerThread::wait_until_out_of_work::h2cd876e5aadc83a7 at registry.rs:824:14
    frame #8: 0x00003339401d2b23 stalwart-default`rayon_core::registry::ThreadBuilder::run::h5cbe4e59729e50ae [inlined] rayon_core::registry::main_loop::hdf0080ca455677ff at registry.rs:929:19
    frame #9: 0x00003339401d2b05 stalwart-default`rayon_core::registry::ThreadBuilder::run::h5cbe4e59729e50ae at registry.rs:50:18
    frame #10: 0x00003339401da22a stalwart-default`std::sys::backtrace::__rust_begin_short_backtrace::h0a105450d8584be0 [inlined] _$LT$rayon_core..registry..DefaultSpawn$u20$as$u20$rayon_core..registry..ThreadSpawn$GT$::spawn::_$u7b$$u7b$closure$u7d$$u7d$::h4cf3d136063e1834 at registry.rs:95:27
    frame #11: 0x00003339401da1e4 stalwart-default`std::sys::backtrace::__rust_begin_short_backtrace::h0a105450d8584be0 at backtrace.rs:158:18
    frame #12: 0x00003339401d8a4f stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] std::thread::Builder::spawn_unchecked_::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::h977267132722bd94 at mod.rs:562:17
    frame #13: 0x00003339401d89b8 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] _$LT$core..panic..unwind_safe..AssertUnwindSafe$LT$F$GT$$u20$as$u20$core..ops..function..FnOnce$LT$$LP$$RP$$GT$$GT$::call_once::h6def9b4453ce8ef3 at unwind_safe.rs:274:9
    frame #14: 0x00003339401d893a stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] std::panicking::catch_unwind::do_call::he3e2287c32d438a4 at panicking.rs:590:40
    frame #15: 0x00003339401d893a stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] std::panicking::catch_unwind::hb55f570a4b0615ec at panicking.rs:553:19
    frame #16: 0x00003339401d893a stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] std::panic::catch_unwind::hcd5727434d829a72 at panic.rs:359:14
    frame #17: 0x00003339401d893a stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] std::thread::Builder::spawn_unchecked_::_$u7b$$u7b$closure$u7d$$u7d$::h1a7d16769dedf55c at mod.rs:560:30
    frame #18: 0x00003339401d8844 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 at function.rs:250:5
    frame #19: 0x0000333940c45f47 stalwart-default`std::sys::thread::unix::Thread::new::thread_start::h01b7af14f94536d0 + 55
    frame #20: 0x0000334161d56b52 libthr.so.3`___lldb_unnamed_symbol565 + 306
  thread #11, name = 'stalwart-default', stop reason = signal SIGSEGV
    frame #0: 0x0000334163ed329a libc.so.7`__sys__umtx_op + 10
    frame #1: 0x0000333940c657eb stalwart-default`std::sys::sync::condvar::futex::Condvar::wait::hb32d617ac465f804 + 75
    frame #2: 0x00003339401da0a2 stalwart-default`rayon_core::sleep::Sleep::sleep::h85a50b2547982aab [inlined] std::sync::poison::condvar::Condvar::wait::ha3cb9d4d93e42460 at condvar.rs:127:24
    frame #3: 0x00003339401da099 stalwart-default`rayon_core::sleep::Sleep::sleep::h85a50b2547982aab at mod.rs:187:50
    frame #4: 0x00003339401d2743 stalwart-default`rayon_core::registry::WorkerThread::wait_until_cold::hc749d45235955c8b [inlined] rayon_core::sleep::Sleep::no_work_found::hb1fd51f61e55c926 at mod.rs:106:18
    frame #5: 0x00003339401d2718 stalwart-default`rayon_core::registry::WorkerThread::wait_until_cold::hc749d45235955c8b at registry.rs:806:26
    frame #6: 0x00003339401d2b39 stalwart-default`rayon_core::registry::ThreadBuilder::run::h5cbe4e59729e50ae [inlined] rayon_core::registry::WorkerThread::wait_until::h5f5c7fb114af26e4 at registry.rs:775:18
    frame #7: 0x00003339401d2b23 stalwart-default`rayon_core::registry::ThreadBuilder::run::h5cbe4e59729e50ae [inlined] rayon_core::registry::WorkerThread::wait_until_out_of_work::h2cd876e5aadc83a7 at registry.rs:824:14
    frame #8: 0x00003339401d2b23 stalwart-default`rayon_core::registry::ThreadBuilder::run::h5cbe4e59729e50ae [inlined] rayon_core::registry::main_loop::hdf0080ca455677ff at registry.rs:929:19
    frame #9: 0x00003339401d2b05 stalwart-default`rayon_core::registry::ThreadBuilder::run::h5cbe4e59729e50ae at registry.rs:50:18
    frame #10: 0x00003339401da22a stalwart-default`std::sys::backtrace::__rust_begin_short_backtrace::h0a105450d8584be0 [inlined] _$LT$rayon_core..registry..DefaultSpawn$u20$as$u20$rayon_core..registry..ThreadSpawn$GT$::spawn::_$u7b$$u7b$closure$u7d$$u7d$::h4cf3d136063e1834 at registry.rs:95:27
    frame #11: 0x00003339401da1e4 stalwart-default`std::sys::backtrace::__rust_begin_short_backtrace::h0a105450d8584be0 at backtrace.rs:158:18
    frame #12: 0x00003339401d8a4f stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] std::thread::Builder::spawn_unchecked_::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::h977267132722bd94 at mod.rs:562:17
    frame #13: 0x00003339401d89b8 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] _$LT$core..panic..unwind_safe..AssertUnwindSafe$LT$F$GT$$u20$as$u20$core..ops..function..FnOnce$LT$$LP$$RP$$GT$$GT$::call_once::h6def9b4453ce8ef3 at unwind_safe.rs:274:9
    frame #14: 0x00003339401d893a stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] std::panicking::catch_unwind::do_call::he3e2287c32d438a4 at panicking.rs:590:40
    frame #15: 0x00003339401d893a stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] std::panicking::catch_unwind::hb55f570a4b0615ec at panicking.rs:553:19
    frame #16: 0x00003339401d893a stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] std::panic::catch_unwind::hcd5727434d829a72 at panic.rs:359:14
    frame #17: 0x00003339401d893a stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] std::thread::Builder::spawn_unchecked_::_$u7b$$u7b$closure$u7d$$u7d$::h1a7d16769dedf55c at mod.rs:560:30
    frame #18: 0x00003339401d8844 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 at function.rs:250:5
    frame #19: 0x0000333940c45f47 stalwart-default`std::sys::thread::unix::Thread::new::thread_start::h01b7af14f94536d0 + 55
    frame #20: 0x0000334161d56b52 libthr.so.3`___lldb_unnamed_symbol565 + 306
  thread #12, name = 'stalwart-default', stop reason = signal SIGSEGV
    frame #0: 0x0000334163ed329a libc.so.7`__sys__umtx_op + 10
    frame #1: 0x0000333940c657eb stalwart-default`std::sys::sync::condvar::futex::Condvar::wait::hb32d617ac465f804 + 75
    frame #2: 0x00003339401da0a2 stalwart-default`rayon_core::sleep::Sleep::sleep::h85a50b2547982aab [inlined] std::sync::poison::condvar::Condvar::wait::ha3cb9d4d93e42460 at condvar.rs:127:24
    frame #3: 0x00003339401da099 stalwart-default`rayon_core::sleep::Sleep::sleep::h85a50b2547982aab at mod.rs:187:50
    frame #4: 0x00003339401d2743 stalwart-default`rayon_core::registry::WorkerThread::wait_until_cold::hc749d45235955c8b [inlined] rayon_core::sleep::Sleep::no_work_found::hb1fd51f61e55c926 at mod.rs:106:18
    frame #5: 0x00003339401d2718 stalwart-default`rayon_core::registry::WorkerThread::wait_until_cold::hc749d45235955c8b at registry.rs:806:26
    frame #6: 0x00003339401d2b39 stalwart-default`rayon_core::registry::ThreadBuilder::run::h5cbe4e59729e50ae [inlined] rayon_core::registry::WorkerThread::wait_until::h5f5c7fb114af26e4 at registry.rs:775:18
    frame #7: 0x00003339401d2b23 stalwart-default`rayon_core::registry::ThreadBuilder::run::h5cbe4e59729e50ae [inlined] rayon_core::registry::WorkerThread::wait_until_out_of_work::h2cd876e5aadc83a7 at registry.rs:824:14
    frame #8: 0x00003339401d2b23 stalwart-default`rayon_core::registry::ThreadBuilder::run::h5cbe4e59729e50ae [inlined] rayon_core::registry::main_loop::hdf0080ca455677ff at registry.rs:929:19
    frame #9: 0x00003339401d2b05 stalwart-default`rayon_core::registry::ThreadBuilder::run::h5cbe4e59729e50ae at registry.rs:50:18
    frame #10: 0x00003339401da22a stalwart-default`std::sys::backtrace::__rust_begin_short_backtrace::h0a105450d8584be0 [inlined] _$LT$rayon_core..registry..DefaultSpawn$u20$as$u20$rayon_core..registry..ThreadSpawn$GT$::spawn::_$u7b$$u7b$closure$u7d$$u7d$::h4cf3d136063e1834 at registry.rs:95:27
    frame #11: 0x00003339401da1e4 stalwart-default`std::sys::backtrace::__rust_begin_short_backtrace::h0a105450d8584be0 at backtrace.rs:158:18
    frame #12: 0x00003339401d8a4f stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] std::thread::Builder::spawn_unchecked_::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::h977267132722bd94 at mod.rs:562:17
    frame #13: 0x00003339401d89b8 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] _$LT$core..panic..unwind_safe..AssertUnwindSafe$LT$F$GT$$u20$as$u20$core..ops..function..FnOnce$LT$$LP$$RP$$GT$$GT$::call_once::h6def9b4453ce8ef3 at unwind_safe.rs:274:9
    frame #14: 0x00003339401d893a stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] std::panicking::catch_unwind::do_call::he3e2287c32d438a4 at panicking.rs:590:40
    frame #15: 0x00003339401d893a stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] std::panicking::catch_unwind::hb55f570a4b0615ec at panicking.rs:553:19
    frame #16: 0x00003339401d893a stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] std::panic::catch_unwind::hcd5727434d829a72 at panic.rs:359:14
    frame #17: 0x00003339401d893a stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] std::thread::Builder::spawn_unchecked_::_$u7b$$u7b$closure$u7d$$u7d$::h1a7d16769dedf55c at mod.rs:560:30
    frame #18: 0x00003339401d8844 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 at function.rs:250:5
    frame #19: 0x0000333940c45f47 stalwart-default`std::sys::thread::unix::Thread::new::thread_start::h01b7af14f94536d0 + 55
    frame #20: 0x0000334161d56b52 libthr.so.3`___lldb_unnamed_symbol565 + 306
  thread #13, name = 'stalwart-default', stop reason = signal SIGSEGV
    frame #0: 0x0000334163ed329a libc.so.7`__sys__umtx_op + 10
    frame #1: 0x0000333940c657eb stalwart-default`std::sys::sync::condvar::futex::Condvar::wait::hb32d617ac465f804 + 75
    frame #2: 0x00003339401da0a2 stalwart-default`rayon_core::sleep::Sleep::sleep::h85a50b2547982aab [inlined] std::sync::poison::condvar::Condvar::wait::ha3cb9d4d93e42460 at condvar.rs:127:24
    frame #3: 0x00003339401da099 stalwart-default`rayon_core::sleep::Sleep::sleep::h85a50b2547982aab at mod.rs:187:50
    frame #4: 0x00003339401d2743 stalwart-default`rayon_core::registry::WorkerThread::wait_until_cold::hc749d45235955c8b [inlined] rayon_core::sleep::Sleep::no_work_found::hb1fd51f61e55c926 at mod.rs:106:18
    frame #5: 0x00003339401d2718 stalwart-default`rayon_core::registry::WorkerThread::wait_until_cold::hc749d45235955c8b at registry.rs:806:26
    frame #6: 0x00003339401d2b39 stalwart-default`rayon_core::registry::ThreadBuilder::run::h5cbe4e59729e50ae [inlined] rayon_core::registry::WorkerThread::wait_until::h5f5c7fb114af26e4 at registry.rs:775:18
    frame #7: 0x00003339401d2b23 stalwart-default`rayon_core::registry::ThreadBuilder::run::h5cbe4e59729e50ae [inlined] rayon_core::registry::WorkerThread::wait_until_out_of_work::h2cd876e5aadc83a7 at registry.rs:824:14
    frame #8: 0x00003339401d2b23 stalwart-default`rayon_core::registry::ThreadBuilder::run::h5cbe4e59729e50ae [inlined] rayon_core::registry::main_loop::hdf0080ca455677ff at registry.rs:929:19
    frame #9: 0x00003339401d2b05 stalwart-default`rayon_core::registry::ThreadBuilder::run::h5cbe4e59729e50ae at registry.rs:50:18
    frame #10: 0x00003339401da22a stalwart-default`std::sys::backtrace::__rust_begin_short_backtrace::h0a105450d8584be0 [inlined] _$LT$rayon_core..registry..DefaultSpawn$u20$as$u20$rayon_core..registry..ThreadSpawn$GT$::spawn::_$u7b$$u7b$closure$u7d$$u7d$::h4cf3d136063e1834 at registry.rs:95:27
    frame #11: 0x00003339401da1e4 stalwart-default`std::sys::backtrace::__rust_begin_short_backtrace::h0a105450d8584be0 at backtrace.rs:158:18
    frame #12: 0x00003339401d8a4f stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] std::thread::Builder::spawn_unchecked_::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::h977267132722bd94 at mod.rs:562:17
    frame #13: 0x00003339401d89b8 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] _$LT$core..panic..unwind_safe..AssertUnwindSafe$LT$F$GT$$u20$as$u20$core..ops..function..FnOnce$LT$$LP$$RP$$GT$$GT$::call_once::h6def9b4453ce8ef3 at unwind_safe.rs:274:9
    frame #14: 0x00003339401d893a stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] std::panicking::catch_unwind::do_call::he3e2287c32d438a4 at panicking.rs:590:40
    frame #15: 0x00003339401d893a stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] std::panicking::catch_unwind::hb55f570a4b0615ec at panicking.rs:553:19
    frame #16: 0x00003339401d893a stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] std::panic::catch_unwind::hcd5727434d829a72 at panic.rs:359:14
    frame #17: 0x00003339401d893a stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] std::thread::Builder::spawn_unchecked_::_$u7b$$u7b$closure$u7d$$u7d$::h1a7d16769dedf55c at mod.rs:560:30
    frame #18: 0x00003339401d8844 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 at function.rs:250:5
    frame #19: 0x0000333940c45f47 stalwart-default`std::sys::thread::unix::Thread::new::thread_start::h01b7af14f94536d0 + 55
    frame #20: 0x0000334161d56b52 libthr.so.3`___lldb_unnamed_symbol565 + 306
  thread #14, name = 'stalwart-default', stop reason = signal SIGSEGV
    frame #0: 0x0000334163ed329a libc.so.7`__sys__umtx_op + 10
    frame #1: 0x0000333940c657eb stalwart-default`std::sys::sync::condvar::futex::Condvar::wait::hb32d617ac465f804 + 75
    frame #2: 0x00003339401da0a2 stalwart-default`rayon_core::sleep::Sleep::sleep::h85a50b2547982aab [inlined] std::sync::poison::condvar::Condvar::wait::ha3cb9d4d93e42460 at condvar.rs:127:24
    frame #3: 0x00003339401da099 stalwart-default`rayon_core::sleep::Sleep::sleep::h85a50b2547982aab at mod.rs:187:50
    frame #4: 0x00003339401d2743 stalwart-default`rayon_core::registry::WorkerThread::wait_until_cold::hc749d45235955c8b [inlined] rayon_core::sleep::Sleep::no_work_found::hb1fd51f61e55c926 at mod.rs:106:18
    frame #5: 0x00003339401d2718 stalwart-default`rayon_core::registry::WorkerThread::wait_until_cold::hc749d45235955c8b at registry.rs:806:26
    frame #6: 0x00003339401d2b39 stalwart-default`rayon_core::registry::ThreadBuilder::run::h5cbe4e59729e50ae [inlined] rayon_core::registry::WorkerThread::wait_until::h5f5c7fb114af26e4 at registry.rs:775:18
    frame #7: 0x00003339401d2b23 stalwart-default`rayon_core::registry::ThreadBuilder::run::h5cbe4e59729e50ae [inlined] rayon_core::registry::WorkerThread::wait_until_out_of_work::h2cd876e5aadc83a7 at registry.rs:824:14
    frame #8: 0x00003339401d2b23 stalwart-default`rayon_core::registry::ThreadBuilder::run::h5cbe4e59729e50ae [inlined] rayon_core::registry::main_loop::hdf0080ca455677ff at registry.rs:929:19
    frame #9: 0x00003339401d2b05 stalwart-default`rayon_core::registry::ThreadBuilder::run::h5cbe4e59729e50ae at registry.rs:50:18
    frame #10: 0x00003339401da22a stalwart-default`std::sys::backtrace::__rust_begin_short_backtrace::h0a105450d8584be0 [inlined] _$LT$rayon_core..registry..DefaultSpawn$u20$as$u20$rayon_core..registry..ThreadSpawn$GT$::spawn::_$u7b$$u7b$closure$u7d$$u7d$::h4cf3d136063e1834 at registry.rs:95:27
    frame #11: 0x00003339401da1e4 stalwart-default`std::sys::backtrace::__rust_begin_short_backtrace::h0a105450d8584be0 at backtrace.rs:158:18
    frame #12: 0x00003339401d8a4f stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] std::thread::Builder::spawn_unchecked_::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::h977267132722bd94 at mod.rs:562:17
    frame #13: 0x00003339401d89b8 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] _$LT$core..panic..unwind_safe..AssertUnwindSafe$LT$F$GT$$u20$as$u20$core..ops..function..FnOnce$LT$$LP$$RP$$GT$$GT$::call_once::h6def9b4453ce8ef3 at unwind_safe.rs:274:9
    frame #14: 0x00003339401d893a stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] std::panicking::catch_unwind::do_call::he3e2287c32d438a4 at panicking.rs:590:40
    frame #15: 0x00003339401d893a stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] std::panicking::catch_unwind::hb55f570a4b0615ec at panicking.rs:553:19
    frame #16: 0x00003339401d893a stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] std::panic::catch_unwind::hcd5727434d829a72 at panic.rs:359:14
    frame #17: 0x00003339401d893a stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] std::thread::Builder::spawn_unchecked_::_$u7b$$u7b$closure$u7d$$u7d$::h1a7d16769dedf55c at mod.rs:560:30
    frame #18: 0x00003339401d8844 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 at function.rs:250:5
    frame #19: 0x0000333940c45f47 stalwart-default`std::sys::thread::unix::Thread::new::thread_start::h01b7af14f94536d0 + 55
    frame #20: 0x0000334161d56b52 libthr.so.3`___lldb_unnamed_symbol565 + 306
  thread #15, name = 'stalwart-default', stop reason = signal SIGSEGV
    frame #0: 0x0000334163ed329a libc.so.7`__sys__umtx_op + 10
    frame #1: 0x0000333940c657eb stalwart-default`std::sys::sync::condvar::futex::Condvar::wait::hb32d617ac465f804 + 75
    frame #2: 0x00003339401da0a2 stalwart-default`rayon_core::sleep::Sleep::sleep::h85a50b2547982aab [inlined] std::sync::poison::condvar::Condvar::wait::ha3cb9d4d93e42460 at condvar.rs:127:24
    frame #3: 0x00003339401da099 stalwart-default`rayon_core::sleep::Sleep::sleep::h85a50b2547982aab at mod.rs:187:50
    frame #4: 0x00003339401d2743 stalwart-default`rayon_core::registry::WorkerThread::wait_until_cold::hc749d45235955c8b [inlined] rayon_core::sleep::Sleep::no_work_found::hb1fd51f61e55c926 at mod.rs:106:18
    frame #5: 0x00003339401d2718 stalwart-default`rayon_core::registry::WorkerThread::wait_until_cold::hc749d45235955c8b at registry.rs:806:26
    frame #6: 0x00003339401d2b39 stalwart-default`rayon_core::registry::ThreadBuilder::run::h5cbe4e59729e50ae [inlined] rayon_core::registry::WorkerThread::wait_until::h5f5c7fb114af26e4 at registry.rs:775:18
    frame #7: 0x00003339401d2b23 stalwart-default`rayon_core::registry::ThreadBuilder::run::h5cbe4e59729e50ae [inlined] rayon_core::registry::WorkerThread::wait_until_out_of_work::h2cd876e5aadc83a7 at registry.rs:824:14
    frame #8: 0x00003339401d2b23 stalwart-default`rayon_core::registry::ThreadBuilder::run::h5cbe4e59729e50ae [inlined] rayon_core::registry::main_loop::hdf0080ca455677ff at registry.rs:929:19
    frame #9: 0x00003339401d2b05 stalwart-default`rayon_core::registry::ThreadBuilder::run::h5cbe4e59729e50ae at registry.rs:50:18
    frame #10: 0x00003339401da22a stalwart-default`std::sys::backtrace::__rust_begin_short_backtrace::h0a105450d8584be0 [inlined] _$LT$rayon_core..registry..DefaultSpawn$u20$as$u20$rayon_core..registry..ThreadSpawn$GT$::spawn::_$u7b$$u7b$closure$u7d$$u7d$::h4cf3d136063e1834 at registry.rs:95:27
    frame #11: 0x00003339401da1e4 stalwart-default`std::sys::backtrace::__rust_begin_short_backtrace::h0a105450d8584be0 at backtrace.rs:158:18
    frame #12: 0x00003339401d8a4f stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] std::thread::Builder::spawn_unchecked_::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::h977267132722bd94 at mod.rs:562:17
    frame #13: 0x00003339401d89b8 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] _$LT$core..panic..unwind_safe..AssertUnwindSafe$LT$F$GT$$u20$as$u20$core..ops..function..FnOnce$LT$$LP$$RP$$GT$$GT$::call_once::h6def9b4453ce8ef3 at unwind_safe.rs:274:9
    frame #14: 0x00003339401d893a stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] std::panicking::catch_unwind::do_call::he3e2287c32d438a4 at panicking.rs:590:40
    frame #15: 0x00003339401d893a stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] std::panicking::catch_unwind::hb55f570a4b0615ec at panicking.rs:553:19
    frame #16: 0x00003339401d893a stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] std::panic::catch_unwind::hcd5727434d829a72 at panic.rs:359:14
    frame #17: 0x00003339401d893a stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] std::thread::Builder::spawn_unchecked_::_$u7b$$u7b$closure$u7d$$u7d$::h1a7d16769dedf55c at mod.rs:560:30
    frame #18: 0x00003339401d8844 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 at function.rs:250:5
    frame #19: 0x0000333940c45f47 stalwart-default`std::sys::thread::unix::Thread::new::thread_start::h01b7af14f94536d0 + 55
    frame #20: 0x0000334161d56b52 libthr.so.3`___lldb_unnamed_symbol565 + 306
  thread #16, name = 'stalwart-default', stop reason = signal SIGSEGV
    frame #0: 0x0000334163ed329a libc.so.7`__sys__umtx_op + 10
    frame #1: 0x0000333940c657eb stalwart-default`std::sys::sync::condvar::futex::Condvar::wait::hb32d617ac465f804 + 75
    frame #2: 0x00003339401da0a2 stalwart-default`rayon_core::sleep::Sleep::sleep::h85a50b2547982aab [inlined] std::sync::poison::condvar::Condvar::wait::ha3cb9d4d93e42460 at condvar.rs:127:24
    frame #3: 0x00003339401da099 stalwart-default`rayon_core::sleep::Sleep::sleep::h85a50b2547982aab at mod.rs:187:50
    frame #4: 0x00003339401d2743 stalwart-default`rayon_core::registry::WorkerThread::wait_until_cold::hc749d45235955c8b [inlined] rayon_core::sleep::Sleep::no_work_found::hb1fd51f61e55c926 at mod.rs:106:18
    frame #5: 0x00003339401d2718 stalwart-default`rayon_core::registry::WorkerThread::wait_until_cold::hc749d45235955c8b at registry.rs:806:26
    frame #6: 0x00003339401d2b39 stalwart-default`rayon_core::registry::ThreadBuilder::run::h5cbe4e59729e50ae [inlined] rayon_core::registry::WorkerThread::wait_until::h5f5c7fb114af26e4 at registry.rs:775:18
    frame #7: 0x00003339401d2b23 stalwart-default`rayon_core::registry::ThreadBuilder::run::h5cbe4e59729e50ae [inlined] rayon_core::registry::WorkerThread::wait_until_out_of_work::h2cd876e5aadc83a7 at registry.rs:824:14
    frame #8: 0x00003339401d2b23 stalwart-default`rayon_core::registry::ThreadBuilder::run::h5cbe4e59729e50ae [inlined] rayon_core::registry::main_loop::hdf0080ca455677ff at registry.rs:929:19
    frame #9: 0x00003339401d2b05 stalwart-default`rayon_core::registry::ThreadBuilder::run::h5cbe4e59729e50ae at registry.rs:50:18
    frame #10: 0x00003339401da22a stalwart-default`std::sys::backtrace::__rust_begin_short_backtrace::h0a105450d8584be0 [inlined] _$LT$rayon_core..registry..DefaultSpawn$u20$as$u20$rayon_core..registry..ThreadSpawn$GT$::spawn::_$u7b$$u7b$closure$u7d$$u7d$::h4cf3d136063e1834 at registry.rs:95:27
    frame #11: 0x00003339401da1e4 stalwart-default`std::sys::backtrace::__rust_begin_short_backtrace::h0a105450d8584be0 at backtrace.rs:158:18
    frame #12: 0x00003339401d8a4f stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] std::thread::Builder::spawn_unchecked_::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::h977267132722bd94 at mod.rs:562:17
    frame #13: 0x00003339401d89b8 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] _$LT$core..panic..unwind_safe..AssertUnwindSafe$LT$F$GT$$u20$as$u20$core..ops..function..FnOnce$LT$$LP$$RP$$GT$$GT$::call_once::h6def9b4453ce8ef3 at unwind_safe.rs:274:9
    frame #14: 0x00003339401d893a stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] std::panicking::catch_unwind::do_call::he3e2287c32d438a4 at panicking.rs:590:40
    frame #15: 0x00003339401d893a stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] std::panicking::catch_unwind::hb55f570a4b0615ec at panicking.rs:553:19
    frame #16: 0x00003339401d893a stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] std::panic::catch_unwind::hcd5727434d829a72 at panic.rs:359:14
    frame #17: 0x00003339401d893a stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] std::thread::Builder::spawn_unchecked_::_$u7b$$u7b$closure$u7d$$u7d$::h1a7d16769dedf55c at mod.rs:560:30
    frame #18: 0x00003339401d8844 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 at function.rs:250:5
    frame #19: 0x0000333940c45f47 stalwart-default`std::sys::thread::unix::Thread::new::thread_start::h01b7af14f94536d0 + 55
    frame #20: 0x0000334161d56b52 libthr.so.3`___lldb_unnamed_symbol565 + 306
  thread #17, name = 'stalwart-default', stop reason = signal SIGSEGV
    frame #0: 0x0000334163ed329a libc.so.7`__sys__umtx_op + 10
    frame #1: 0x0000333940c657eb stalwart-default`std::sys::sync::condvar::futex::Condvar::wait::hb32d617ac465f804 + 75
    frame #2: 0x00003339401da0a2 stalwart-default`rayon_core::sleep::Sleep::sleep::h85a50b2547982aab [inlined] std::sync::poison::condvar::Condvar::wait::ha3cb9d4d93e42460 at condvar.rs:127:24
    frame #3: 0x00003339401da099 stalwart-default`rayon_core::sleep::Sleep::sleep::h85a50b2547982aab at mod.rs:187:50
    frame #4: 0x00003339401d2743 stalwart-default`rayon_core::registry::WorkerThread::wait_until_cold::hc749d45235955c8b [inlined] rayon_core::sleep::Sleep::no_work_found::hb1fd51f61e55c926 at mod.rs:106:18
    frame #5: 0x00003339401d2718 stalwart-default`rayon_core::registry::WorkerThread::wait_until_cold::hc749d45235955c8b at registry.rs:806:26
    frame #6: 0x00003339401d2b39 stalwart-default`rayon_core::registry::ThreadBuilder::run::h5cbe4e59729e50ae [inlined] rayon_core::registry::WorkerThread::wait_until::h5f5c7fb114af26e4 at registry.rs:775:18
    frame #7: 0x00003339401d2b23 stalwart-default`rayon_core::registry::ThreadBuilder::run::h5cbe4e59729e50ae [inlined] rayon_core::registry::WorkerThread::wait_until_out_of_work::h2cd876e5aadc83a7 at registry.rs:824:14
    frame #8: 0x00003339401d2b23 stalwart-default`rayon_core::registry::ThreadBuilder::run::h5cbe4e59729e50ae [inlined] rayon_core::registry::main_loop::hdf0080ca455677ff at registry.rs:929:19
    frame #9: 0x00003339401d2b05 stalwart-default`rayon_core::registry::ThreadBuilder::run::h5cbe4e59729e50ae at registry.rs:50:18
    frame #10: 0x00003339401da22a stalwart-default`std::sys::backtrace::__rust_begin_short_backtrace::h0a105450d8584be0 [inlined] _$LT$rayon_core..registry..DefaultSpawn$u20$as$u20$rayon_core..registry..ThreadSpawn$GT$::spawn::_$u7b$$u7b$closure$u7d$$u7d$::h4cf3d136063e1834 at registry.rs:95:27
    frame #11: 0x00003339401da1e4 stalwart-default`std::sys::backtrace::__rust_begin_short_backtrace::h0a105450d8584be0 at backtrace.rs:158:18
    frame #12: 0x00003339401d8a4f stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] std::thread::Builder::spawn_unchecked_::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::h977267132722bd94 at mod.rs:562:17
    frame #13: 0x00003339401d89b8 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] _$LT$core..panic..unwind_safe..AssertUnwindSafe$LT$F$GT$$u20$as$u20$core..ops..function..FnOnce$LT$$LP$$RP$$GT$$GT$::call_once::h6def9b4453ce8ef3 at unwind_safe.rs:274:9
    frame #14: 0x00003339401d893a stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] std::panicking::catch_unwind::do_call::he3e2287c32d438a4 at panicking.rs:590:40
    frame #15: 0x00003339401d893a stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] std::panicking::catch_unwind::hb55f570a4b0615ec at panicking.rs:553:19
    frame #16: 0x00003339401d893a stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] std::panic::catch_unwind::hcd5727434d829a72 at panic.rs:359:14
    frame #17: 0x00003339401d893a stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] std::thread::Builder::spawn_unchecked_::_$u7b$$u7b$closure$u7d$$u7d$::h1a7d16769dedf55c at mod.rs:560:30
    frame #18: 0x00003339401d8844 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 at function.rs:250:5
    frame #19: 0x0000333940c45f47 stalwart-default`std::sys::thread::unix::Thread::new::thread_start::h01b7af14f94536d0 + 55
    frame #20: 0x0000334161d56b52 libthr.so.3`___lldb_unnamed_symbol565 + 306
  thread #18, name = 'stalwart-default', stop reason = signal SIGSEGV
    frame #0: 0x0000334163ed329a libc.so.7`__sys__umtx_op + 10
    frame #1: 0x0000333940c657eb stalwart-default`std::sys::sync::condvar::futex::Condvar::wait::hb32d617ac465f804 + 75
    frame #2: 0x00003339401da0a2 stalwart-default`rayon_core::sleep::Sleep::sleep::h85a50b2547982aab [inlined] std::sync::poison::condvar::Condvar::wait::ha3cb9d4d93e42460 at condvar.rs:127:24
    frame #3: 0x00003339401da099 stalwart-default`rayon_core::sleep::Sleep::sleep::h85a50b2547982aab at mod.rs:187:50
    frame #4: 0x00003339401d2743 stalwart-default`rayon_core::registry::WorkerThread::wait_until_cold::hc749d45235955c8b [inlined] rayon_core::sleep::Sleep::no_work_found::hb1fd51f61e55c926 at mod.rs:106:18
    frame #5: 0x00003339401d2718 stalwart-default`rayon_core::registry::WorkerThread::wait_until_cold::hc749d45235955c8b at registry.rs:806:26
    frame #6: 0x00003339401d2b39 stalwart-default`rayon_core::registry::ThreadBuilder::run::h5cbe4e59729e50ae [inlined] rayon_core::registry::WorkerThread::wait_until::h5f5c7fb114af26e4 at registry.rs:775:18
    frame #7: 0x00003339401d2b23 stalwart-default`rayon_core::registry::ThreadBuilder::run::h5cbe4e59729e50ae [inlined] rayon_core::registry::WorkerThread::wait_until_out_of_work::h2cd876e5aadc83a7 at registry.rs:824:14
    frame #8: 0x00003339401d2b23 stalwart-default`rayon_core::registry::ThreadBuilder::run::h5cbe4e59729e50ae [inlined] rayon_core::registry::main_loop::hdf0080ca455677ff at registry.rs:929:19
    frame #9: 0x00003339401d2b05 stalwart-default`rayon_core::registry::ThreadBuilder::run::h5cbe4e59729e50ae at registry.rs:50:18
    frame #10: 0x00003339401da22a stalwart-default`std::sys::backtrace::__rust_begin_short_backtrace::h0a105450d8584be0 [inlined] _$LT$rayon_core..registry..DefaultSpawn$u20$as$u20$rayon_core..registry..ThreadSpawn$GT$::spawn::_$u7b$$u7b$closure$u7d$$u7d$::h4cf3d136063e1834 at registry.rs:95:27
    frame #11: 0x00003339401da1e4 stalwart-default`std::sys::backtrace::__rust_begin_short_backtrace::h0a105450d8584be0 at backtrace.rs:158:18
    frame #12: 0x00003339401d8a4f stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] std::thread::Builder::spawn_unchecked_::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::h977267132722bd94 at mod.rs:562:17
    frame #13: 0x00003339401d89b8 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] _$LT$core..panic..unwind_safe..AssertUnwindSafe$LT$F$GT$$u20$as$u20$core..ops..function..FnOnce$LT$$LP$$RP$$GT$$GT$::call_once::h6def9b4453ce8ef3 at unwind_safe.rs:274:9
    frame #14: 0x00003339401d893a stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] std::panicking::catch_unwind::do_call::he3e2287c32d438a4 at panicking.rs:590:40
    frame #15: 0x00003339401d893a stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] std::panicking::catch_unwind::hb55f570a4b0615ec at panicking.rs:553:19
    frame #16: 0x00003339401d893a stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] std::panic::catch_unwind::hcd5727434d829a72 at panic.rs:359:14
    frame #17: 0x00003339401d893a stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] std::thread::Builder::spawn_unchecked_::_$u7b$$u7b$closure$u7d$$u7d$::h1a7d16769dedf55c at mod.rs:560:30
    frame #18: 0x00003339401d8844 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 at function.rs:250:5
    frame #19: 0x0000333940c45f47 stalwart-default`std::sys::thread::unix::Thread::new::thread_start::h01b7af14f94536d0 + 55
    frame #20: 0x0000334161d56b52 libthr.so.3`___lldb_unnamed_symbol565 + 306
  thread #19, name = 'stalwart-default', stop reason = signal SIGSEGV
    frame #0: 0x0000334163ed329a libc.so.7`__sys__umtx_op + 10
    frame #1: 0x0000333940c657eb stalwart-default`std::sys::sync::condvar::futex::Condvar::wait::hb32d617ac465f804 + 75
    frame #2: 0x00003339401da0a2 stalwart-default`rayon_core::sleep::Sleep::sleep::h85a50b2547982aab [inlined] std::sync::poison::condvar::Condvar::wait::ha3cb9d4d93e42460 at condvar.rs:127:24
    frame #3: 0x00003339401da099 stalwart-default`rayon_core::sleep::Sleep::sleep::h85a50b2547982aab at mod.rs:187:50
    frame #4: 0x00003339401d2743 stalwart-default`rayon_core::registry::WorkerThread::wait_until_cold::hc749d45235955c8b [inlined] rayon_core::sleep::Sleep::no_work_found::hb1fd51f61e55c926 at mod.rs:106:18
    frame #5: 0x00003339401d2718 stalwart-default`rayon_core::registry::WorkerThread::wait_until_cold::hc749d45235955c8b at registry.rs:806:26
    frame #6: 0x00003339401d2b39 stalwart-default`rayon_core::registry::ThreadBuilder::run::h5cbe4e59729e50ae [inlined] rayon_core::registry::WorkerThread::wait_until::h5f5c7fb114af26e4 at registry.rs:775:18
    frame #7: 0x00003339401d2b23 stalwart-default`rayon_core::registry::ThreadBuilder::run::h5cbe4e59729e50ae [inlined] rayon_core::registry::WorkerThread::wait_until_out_of_work::h2cd876e5aadc83a7 at registry.rs:824:14
    frame #8: 0x00003339401d2b23 stalwart-default`rayon_core::registry::ThreadBuilder::run::h5cbe4e59729e50ae [inlined] rayon_core::registry::main_loop::hdf0080ca455677ff at registry.rs:929:19
    frame #9: 0x00003339401d2b05 stalwart-default`rayon_core::registry::ThreadBuilder::run::h5cbe4e59729e50ae at registry.rs:50:18
    frame #10: 0x00003339401da22a stalwart-default`std::sys::backtrace::__rust_begin_short_backtrace::h0a105450d8584be0 [inlined] _$LT$rayon_core..registry..DefaultSpawn$u20$as$u20$rayon_core..registry..ThreadSpawn$GT$::spawn::_$u7b$$u7b$closure$u7d$$u7d$::h4cf3d136063e1834 at registry.rs:95:27
    frame #11: 0x00003339401da1e4 stalwart-default`std::sys::backtrace::__rust_begin_short_backtrace::h0a105450d8584be0 at backtrace.rs:158:18
    frame #12: 0x00003339401d8a4f stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] std::thread::Builder::spawn_unchecked_::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::h977267132722bd94 at mod.rs:562:17
    frame #13: 0x00003339401d89b8 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] _$LT$core..panic..unwind_safe..AssertUnwindSafe$LT$F$GT$$u20$as$u20$core..ops..function..FnOnce$LT$$LP$$RP$$GT$$GT$::call_once::h6def9b4453ce8ef3 at unwind_safe.rs:274:9
    frame #14: 0x00003339401d893a stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] std::panicking::catch_unwind::do_call::he3e2287c32d438a4 at panicking.rs:590:40
    frame #15: 0x00003339401d893a stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] std::panicking::catch_unwind::hb55f570a4b0615ec at panicking.rs:553:19
    frame #16: 0x00003339401d893a stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] std::panic::catch_unwind::hcd5727434d829a72 at panic.rs:359:14
    frame #17: 0x00003339401d893a stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 [inlined] std::thread::Builder::spawn_unchecked_::_$u7b$$u7b$closure$u7d$$u7d$::h1a7d16769dedf55c at mod.rs:560:30
    frame #18: 0x00003339401d8844 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hcc08e234b4322ad2 at function.rs:250:5
    frame #19: 0x0000333940c45f47 stalwart-default`std::sys::thread::unix::Thread::new::thread_start::h01b7af14f94536d0 + 55
    frame #20: 0x0000334161d56b52 libthr.so.3`___lldb_unnamed_symbol565 + 306
  thread #20, name = 'stalwart-collector', stop reason = signal SIGSEGV
    frame #0: 0x0000334163ed329a libc.so.7`__sys__umtx_op + 10
    frame #1: 0x0000333940c6af59 stalwart-default`std::thread::park::hf855201834ae3d2b + 185
    frame #2: 0x00003339406e23c6 stalwart-default`trc::ipc::collector::Collector::collect::h18dbd51dcfd17922 at collector.rs:100:21
    frame #3: 0x00003339406e494d stalwart-default`std::sys::backtrace::__rust_begin_short_backtrace::hd11f5a6731969a0d [inlined] trc::ipc::collector::COLLECTOR_THREAD::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::h109a4c538742083e at collector.rs:84:38
    frame #4: 0x00003339406e493c stalwart-default`std::sys::backtrace::__rust_begin_short_backtrace::hd11f5a6731969a0d at backtrace.rs:158:18
    frame #5: 0x00003339406e4651 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h7d7b8e2391e45f8f [inlined] std::thread::Builder::spawn_unchecked_::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::hfbe98d7b11592e0c at mod.rs:562:17
    frame #6: 0x00003339406e4645 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h7d7b8e2391e45f8f [inlined] _$LT$core..panic..unwind_safe..AssertUnwindSafe$LT$F$GT$$u20$as$u20$core..ops..function..FnOnce$LT$$LP$$RP$$GT$$GT$::call_once::h1e718587764bde40 at unwind_safe.rs:274:9
    frame #7: 0x00003339406e4645 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h7d7b8e2391e45f8f [inlined] std::panicking::catch_unwind::do_call::h2d064788a380dc67 at panicking.rs:590:40
    frame #8: 0x00003339406e463b stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h7d7b8e2391e45f8f [inlined] std::panicking::catch_unwind::hb5ce3ec44824d2cb at panicking.rs:553:19
    frame #9: 0x00003339406e463b stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h7d7b8e2391e45f8f [inlined] std::panic::catch_unwind::he5624c7e5bedb923 at panic.rs:359:14
    frame #10: 0x00003339406e463b stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h7d7b8e2391e45f8f [inlined] std::thread::Builder::spawn_unchecked_::_$u7b$$u7b$closure$u7d$$u7d$::h8e32d46edc236da9 at mod.rs:560:30
    frame #11: 0x00003339406e45f1 stalwart-default`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h7d7b8e2391e45f8f at function.rs:250:5
    frame #12: 0x0000333940c45f47 stalwart-default`std::sys::thread::unix::Thread::new::thread_start::h01b7af14f94536d0 + 55
    frame #13: 0x0000334161d56b52 libthr.so.3`___lldb_unnamed_symbol565 + 306
  thread #21, name = 'stalwart-default', stop reason = signal SIGSEGV
    frame #0: 0x0000334163f49aef libc.so.7`___lldb_unnamed_symbol5950 + 255
    frame #1: 0x0000334163f61dc1 libc.so.7`___lldb_unnamed_symbol6091 + 65
    frame #2: 0x0000334163f61fba libc.so.7`___lldb_unnamed_symbol6092 + 362
    frame #3: 0x0000334163f133a7 libc.so.7`___lldb_unnamed_symbol5410 + 279
    frame #4: 0x0000334161d545b4 libthr.so.3`pthread_attr_init + 36
    frame #5: 0x0000333940c4566b stalwart-default`std::sys::pal::unix::stack_overflow::imp::make_handler::h692d3819da4cb366 + 59
    frame #6: 0x0000333940c45f31 stalwart-default`std::sys::thread::unix::Thread::new::thread_start::h01b7af14f94536d0 + 33
    frame #7: 0x0000334161d56b52 libthr.so.3`___lldb_unnamed_symbol565 + 306
(lldb)

I've uploaded the core dump and the stalwart binary with debug info if anyone wants to take a look. You will need freebsd on x86_64 to run the binary. Stalwart is only loaded with the enron email data set for testing, so there should be nothing sensitive in that dump.

Expected Behavior

Don't crash

Actual Behavior

Crash!

Reproduction Steps

No response

Relevant Log Output

I only had the log set to debug, and I don't think anything interesting happened in the lead up to the crash:


2026-02-03T04:44:13Z DEBUG IMAP STORE command (imap.store) listenerId = "imaptls", localPort = 6993, remoteIp = 27.33.215.198, remotePort = 56704, accountId = 10, mailboxId = 0, documentId = [4906], type = "Add", details = ["Seen"], elapsed = 1ms
2026-02-03T04:44:16Z DEBUG IMAP IDLE start (imap.idle-start) listenerId = "imaptls", localPort = 6993, remoteIp = 27.33.215.198, remotePort = 56704, elapsed = 0ms
2026-02-03T04:44:19Z DEBUG Task acquired from queue (task-queue.task-acquired) total = 0, details = 34
2026-02-03T04:45:15Z DEBUG HTTP connection started (http.connection-start) listenerId = "http", localPort = 6080, remoteIp = 127.0.0.1, remotePort = 33282
2026-02-03T04:45:15Z WARN X-Forwarded-For header is missing (http.x-forwarded-missing) listenerId = "http", localPort = 6080, remoteIp = 127.0.0.1, remotePort = 33282
[1]    71321 segmentation fault (core dumped)  ./stalwart-default --config /home/seph/stalwart-data/config.toml



### Stalwart Version

v0.15.x

### Installation Method

Built from source

### Database Backend

SQLite

### Blob Storage

Filesystem

### Search Engine

Internal

### Directory Backend

Internal

### Additional Context

_No response_

### I acknowledge that:

- [X] I have reviewed the documentation and FAQ and confirm that my issue is NOT addressed there.
- [X] I have searched the Stalwart repository (both open and closed Discussions and Issues) and confirm this is not a duplicate.
- [X] I have set the logging level to `trace` and included relevant log output if applicable.
- [X] I agree to follow the project's [Code of Conduct](https://github.com/stalwartlabs/.github/blob/main/CODE_OF_CONDUCT.md).

mdecimus · 2026-02-03T07:30:33Z

mdecimus
Feb 3, 2026
Maintainer

Unfortunately FreeBSD is not an officially supported platform.
It might be official one day once it is possible to compile BSD from GitHub CI actions.
In the meantime you should forward this report to the people maintaining the binary.

0 replies

josephg · 2026-02-17T00:32:15Z

josephg
Feb 17, 2026
Author

I segfaulted again overnight with debug=1. I'm looking through the stack trace, and it looks like its crashing due to memory corruption within the system allocator (which is also jemalloc). Its trying to write to null in libc.

I'm thrashing it now with IMAP requests to see if I can reproduce the error, but that doesn't seem enough. I might need some interaction with a heartbeat process.

0 replies

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Segfault on FreeBSD (stack overflow?) #2755

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Segfault on FreeBSD (stack overflow?) #2755

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josephg Feb 3, 2026

Issue Description

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Replies: 2 comments

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mdecimus Feb 3, 2026 Maintainer

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josephg Feb 17, 2026 Author

josephg
Feb 3, 2026

mdecimus
Feb 3, 2026
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Feb 17, 2026
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