Intermittent timeout in /css/css-transforms/gradientTransform/svg-gradientTransform-033.html

[cbrewster]

  ▶ TIMEOUT [expected PASS] /css/css-transforms/gradientTransform/svg-gradientTransform-033.html
  │ 
  │ VMware, Inc.
  │ softpipe
  │ 3.3 (Core Profile) Mesa 17.3.0-devel
  │ CloneApi message response was dropped while Webrender was still alive: io error: Connection reset by peer (os error 104) (thread Constellation, at /home/servo/.cargo/git/checkouts/webrender-c3596abe1cf4f320/53750b8/webrender_api/src/api.rs:736)
  │ stack backtrace:
  │    0:     0x7f221cd862ec - backtrace::backtrace::trace::h945f4d71d7f2bcef
  │    1:     0x7f221cd85682 - backtrace::capture::Backtrace::new::h098765edd1a6f51e
  │    2:     0x7f2219d6507c - servo::main::{{closure}}::h2d676e5f47c666ea
  │    3:     0x7f221cda8769 - std::panicking::rust_panic_with_hook::ha47ad7043da6dca7
  │                         at libstd/panicking.rs:401
  │    4:     0x7f221cda8552 - std::panicking::begin_panic_fmt::h7b9ad58b1a9f5c08
  │                         at libstd/panicking.rs:347
  │    5:     0x7f221c37ed6f - webrender_api::api::RenderApiSender::create_api::h57643ec30b37747d
  │    6:     0x7f2219d9f04d - constellation::pipeline::UnprivilegedPipelineContent::start_all::h2760248eeb60471a
  │    7:     0x7f2219da176b - constellation::pipeline::Pipeline::spawn::h13f91e02ea4760cd
  │    8:     0x7f2219dc3ca4 - <constellation::constellation::Constellation<Message, LTF, STF>>::new_pipeline::h390411bd3e4291d0
  │    9:     0x7f2219ddd975 - <constellation::constellation::Constellation<Message, LTF, STF>>::handle_request_from_compositor::hc80fed738c22c7bf
  │   10:     0x7f2219de45be - <constellation::constellation::Constellation<Message, LTF, STF>>::run::h845b3daa77fefb59
  │   11:     0x7f2219dea55b - std::sys_common::backtrace::__rust_begin_short_backtrace::hac7d363dab62a84d
  │   12:     0x7f2219deb5e5 - std::panicking::try::do_call::hd9c55968e17d77a7
  │   13:     0x7f221cdbcebe - __rust_maybe_catch_panic
  │                         at libpanic_unwind/lib.rs:102
  │   14:     0x7f2219e03230 - <F as alloc::boxed::FnBox<A>>::call_box::h3800891bf7348edb
  │   15:     0x7f221cdb1ce7 - <alloc::boxed::Box<alloc::boxed::FnBox<A, Output$u3d$R$GT$$u20$$u2b$$u20$$u27$a$GT$$u20$as$u20$core..ops..function..FnOnce$LT$A$GT$$GT$::call_once::h4e22b0c43cb6888a
  │                         at /checkout/src/liballoc/boxed.rs:645
  │                          - std::sys_common::thread::start_thread::h59e67a35dbc5f526
  │                         at libstd/sys_common/thread.rs:24
  │   16:     0x7f221cd9b128 - std::sys::unix::thread::Thread::new::thread_start::hb6fea1432118f6c3
  │                         at libstd/sys/unix/thread.rs:90
  │   17:     0x7f2218c6a183 - start_thread
  │   18:     0x7f2217531ffc - clone
  │   19:                0x0 - <unknown>
  │ ERROR 2018-04-12T16:53:41Z: servo: CloneApi message response was dropped while Webrender was still alive: io error: Connection reset by peer (os error 104)
  │ called `Result::unwrap()` on an `Err` value: Io(Os { code: 104, kind: ConnectionReset, message: "Connection reset by peer" }) (thread StorageManager, at libcore/result.rs:945)
  │ stack backtrace:
  │    0:     0x7f221cd862ec - backtrace::backtrace::trace::h945f4d71d7f2bcef
  │    1:     0x7f221cd85682 - backtrace::capture::Backtrace::new::h098765edd1a6f51e
  │    2:     0x7f2219d6507c - servo::main::{{closure}}::h2d676e5f47c666ea
  │    3:     0x7f221cda8769 - std::panicking::rust_panic_with_hook::ha47ad7043da6dca7
  │                         at libstd/panicking.rs:401
  │    4:     0x7f221cda8552 - std::panicking::begin_panic_fmt::h7b9ad58b1a9f5c08
  │                         at libstd/panicking.rs:347
  │    5:     0x7f221cda8482 - rust_begin_unwind
  │                         at libstd/panicking.rs:323
  │    6:     0x7f221cdc6660 - core::panicking::panic_fmt::h772b3f45e4d26d3d
  │                         at libcore/panicking.rs:71
  │    7:     0x7f221b5b4b9d - core::result::unwrap_failed::h78f2d3adfd44ba9a
  │    8:     0x7f221b5ac30a - net::storage_thread::StorageManager::start::h5aa4ea438f0f3671
  │    9:     0x7f221b5c8fa2 - std::sys_common::backtrace::__rust_begin_short_backtrace::h81f64f6bd58ade47
  │   10:     0x7f221b5b15ab - _ZN3std9panicking3try7do_call17h48a7239d6eb5698cE.llvm.6409296487868239992
  │   11:     0x7f221cdbcebe - __rust_maybe_catch_panic
  │                         at libpanic_unwind/lib.rs:102
  │   12:     0x7f221b5fb14d - <F as alloc::boxed::FnBox<A>>::call_box::he10e8b696ad88800
  │   13:     0x7f221cdb1ce7 - <alloc::boxed::Box<alloc::boxed::FnBox<A, Output$u3d$R$GT$$u20$$u2b$$u20$$u27$a$GT$$u20$as$u20$core..ops..function..FnOnce$LT$A$GT$$GT$::call_once::h4e22b0c43cb6888a
  │                         at /checkout/src/liballoc/boxed.rs:645
  │                          - std::sys_common::thread::start_thread::h59e67a35dbc5f526
  │                         at libstd/sys_common/thread.rs:24
  │   14:     0x7f221cd9b128 - std::sys::unix::thread::Thread::new::thread_start::hb6fea1432118f6c3
  │                         at libstd/sys/unix/thread.rs:90
  │   15:     0x7f2218c6a183 - start_thread
  │   16:     0x7f2217531ffc - clone
  │   17:                0x0 - <unknown>
  └ ERROR 2018-04-12T16:53:41Z: servo: called `Result::unwrap()` on an `Err` value: Io(Os { code: 104, kind: ConnectionReset, message: "Connection reset by peer" })

Seen in #20629

[jdm]

This is #13480.