Bug: Intermittent SUMMARY: ThreadSanitizer: data race /builds/worker/checkouts/gecko/servo/components/style/parallel.rs:212:9 in style::parallel::top_down_dom::h007801929bd9b74c
Status: RESOLVED
Priority: P5
Resolution: INCOMPLETE
Created: 2020-12-28 23:43:14+00:00
Resolved: 2022-05-10 17:01:02+00:00

**Filed by:** apavel [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer?job_id=325515409&repo=mozilla-central
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/T3iRmMGxSZevhdb1kaNVSg/runs/0/artifacts/public/logs/live_backing.log

---
```
[task 2020-12-28T21:46:51.851Z] 21:46:51     INFO - TEST-START | browser/base/content/test/siteIdentity/browser_identity_UI.js
[task 2020-12-28T21:47:24.195Z] 21:47:24     INFO - GECKO(2252) | error: address range table at offset 0x5c50 has an invalid tuple (length = 0) at offset 0x5c70
[task 2020-12-28T21:47:24.557Z] 21:47:24     INFO - GECKO(2252) | ==2435==WARNING: Symbolizer buffer too small
[task 2020-12-28T21:47:24.558Z] 21:47:24     INFO - GECKO(2252) | ==2435==WARNING: Symbolizer buffer too small
[task 2020-12-28T21:47:24.895Z] 21:47:24     INFO - GECKO(2252) | ==2435==WARNING: Symbolizer buffer too small
[task 2020-12-28T21:47:24.895Z] 21:47:24     INFO - GECKO(2252) | ==2435==WARNING: Symbolizer buffer too small
[task 2020-12-28T21:47:24.896Z] 21:47:24     INFO - GECKO(2252) | ==2435==WARNING: Symbolizer buffer too small
[task 2020-12-28T21:47:24.896Z] 21:47:24     INFO - GECKO(2252) | ==2435==WARNING: Symbolizer buffer too small
[task 2020-12-28T21:47:24.896Z] 21:47:24     INFO - GECKO(2252) | ==2435==WARNING: Symbolizer buffer too small
[task 2020-12-28T21:47:24.896Z] 21:47:24     INFO - GECKO(2252) | ==2435==WARNING: Symbolizer buffer too small
[task 2020-12-28T21:47:24.900Z] 21:47:24     INFO - GECKO(2252) | ==================
[task 2020-12-28T21:47:24.900Z] 21:47:24     INFO - GECKO(2252) | WARNING: ThreadSanitizer: data race (pid=2435)
[task 2020-12-28T21:47:24.900Z] 21:47:24     INFO - GECKO(2252) |   Write of size 8 at 0x7b7000133df8 by thread T24:
[task 2020-12-28T21:47:24.900Z] 21:47:24     INFO - GECKO(2252) |     #0 style::parallel::top_down_dom::h007801929bd9b74c /builds/worker/checkouts/gecko/servo/components/style/parallel.rs:212:9 (libxul.so+0x79c80ae)
[task 2020-12-28T21:47:24.901Z] 21:47:24     INFO - GECKO(2252) |     #1 style::parallel::traverse_nodes::_$u7b$$u7b$closure$u7d$$u7d$::hef639c0dc822aef7 /builds/worker/checkouts/gecko/servo/components/style/parallel.rs:282:17 (libxul.so+0x79c80ae)
[task 2020-12-28T21:47:24.903Z] 21:47:24     INFO - GECKO(2252) |     #2 rayon_core::scope::ScopeFifo::spawn_fifo::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::h6151b31e6c187a5b /builds/worker/checkouts/gecko/third_party/rust/rayon-core/src/scope/mod.rs:497:47 (libxul.so+0x79c80ae)
[task 2020-12-28T21:47:24.904Z] 21:47:24     INFO - GECKO(2252) |     #3 _$LT$std..panic..AssertUnwindSafe$LT$F$GT$$u20$as$u20$core..ops..function..FnOnce$LT$$LP$$RP$$GT$$GT$::call_once::h0ab249a2a4c435fd /builds/worker/fetches/rustc/lib/rustlib/src/rust/library/std/src/panic.rs:322:9 (libxul.so+0x79c80ae)
[task 2020-12-28T21:47:24.904Z] 21:47:24     INFO - GECKO(2252) |     #4 std::panicking::try::do_call::h47783787396d2969 /builds/worker/fetches/rustc/lib/rustlib/src/rust/library/std/src/panicking.rs:381:40 (libxul.so+0x79c80ae)
[task 2020-12-28T21:47:24.907Z] 21:47:24     INFO - GECKO(2252) |     #5 std::panicking::try::h1d068f86a12fc551 /builds/worker/fetches/rustc/lib/rustlib/src/rust/library/std/src/panicking.rs:345:19 (libxul.so+0x79c80ae)
[task 2020-12-28T21:47:24.908Z] 21:47:24     INFO - GECKO(2252) |     #6 std::panic::catch_unwind::hf1477b251b94a3c1 /builds/worker/fetches/rustc/lib/rustlib/src/rust/library/std/src/panic.rs:396:14 (libxul.so+0x79c80ae)
[task 2020-12-28T21:47:24.909Z] 21:47:24     INFO - GECKO(2252) |     #7 rayon_core::unwind::halt_unwinding::hb9b835cda2fc93db /builds/worker/checkouts/gecko/third_party/rust/rayon-core/src/unwind.rs:17:5 (libxul.so+0x79c80ae)
[task 2020-12-28T21:47:24.910Z] 21:47:24     INFO - GECKO(2252) |     #8 rayon_core::scope::ScopeBase::execute_job_closure::hff048fca610f0d70 /builds/worker/checkouts/gecko/third_party/rust/rayon-core/src/scope/mod.rs:563:15 (libxul.so+0x79c80ae)
[task 2020-12-28T21:47:24.911Z] 21:47:24     INFO - GECKO(2252) |     #9 rayon_core::scope::ScopeBase::execute_job::hcff536919e347200 /builds/worker/checkouts/gecko/third_party/rust/rayon-core/src/scope/mod.rs:551:29 (libxul.so+0x79c80ae)
[task 2020-12-28T21:47:24.911Z] 21:47:24     INFO - GECKO(2252) |     #10 rayon_core::scope::ScopeFifo::spawn_fifo::_$u7b$$u7b$closure$u7d$$u7d$::h13db3063c8369d2c /builds/worker/checkouts/gecko/third_party/rust/rayon-core/src/scope/mod.rs:497:17 (libxul.so+0x79c80ae)
[task 2020-12-28T21:47:24.911Z] 21:47:24     INFO - GECKO(2252) |     #11 _$LT$rayon_core..job..HeapJob$LT$BODY$GT$$u20$as$u20$rayon_core..job..Job$GT$::execute::h2d90fda6c4f49961 /builds/worker/checkouts/gecko/third_party/rust/rayon-core/src/job.rs:167:9 (libxul.so+0x79c80ae)
[task 2020-12-28T21:47:24.911Z] 21:47:24     INFO - GECKO(2252) |     #12 rayon_core::job::JobRef::execute::h48df79685489e5cf /builds/worker/checkouts/gecko/third_party/rust/rayon-core/src/job.rs:59:9 (libxul.so+0x79c5b96)
[task 2020-12-28T21:47:24.911Z] 21:47:24     INFO - GECKO(2252) |     #13 _$LT$rayon_core..job..JobFifo$u20$as$u20$rayon_core..job..Job$GT$::execute::h7b959e89de473f35 /builds/worker/checkouts/gecko/third_party/rust/rayon-core/src/job.rs:209:9 (libxul.so+0x79c5b96)
[task 2020-12-28T21:47:24.913Z] 21:47:24     INFO - GECKO(2252) |     #14 rayon_core::job::JobRef::execute::h48df79685489e5cf /builds/worker/checkouts/gecko/third_party/rust/rayon-core/src/job.rs:59:9 (libxul.so+0x7e819a3)
[task 2020-12-28T21:47:24.917Z] 21:47:24     INFO - GECKO(2252) |     #15 rayon_core::registry::WorkerThread::execute::h81f6c63920e7850c /builds/worker/checkouts/gecko/third_party/rust/rayon-core/src/registry.rs:735:9 (libxul.so+0x7e819a3)
[task 2020-12-28T21:47:24.917Z] 21:47:24     INFO - GECKO(2252) |     #16 rayon_core::registry::WorkerThread::wait_until_cold::h384edb5dc1abaa6a /builds/worker/checkouts/gecko/third_party/rust/rayon-core/src/registry.rs:719:17 (libxul.so+0x7e819a3)
[task 2020-12-28T21:47:24.917Z] 21:47:24     INFO - GECKO(2252) |     #17 rayon_core::registry::WorkerThread::wait_until::h89c4deec4eec6db3 /builds/worker/checkouts/gecko/third_party/rust/rayon-core/src/registry.rs:693:13 (libxul.so+0x7e83667)
[task 2020-12-28T21:47:24.917Z] 21:47:24     INFO - GECKO(2252) |     #18 rayon_core::scope::ScopeBase::steal_till_jobs_complete::h5d3678f3e3a156d9 /builds/worker/checkouts/gecko/third_party/rust/rayon-core/src/scope/mod.rs:606:9 (libxul.so+0x7e83667)
[task 2020-12-28T21:47:24.917Z] 21:47:24     INFO - GECKO(2252) |     #19 rayon_core::scope::ScopeBase::complete::h1c609e451c30e087 /builds/worker/checkouts/gecko/third_party/rust/rayon-core/src/scope/mod.rs:539:9 (libxul.so+0x7e83667)
[task 2020-12-28T21:47:24.917Z] 21:47:24     INFO - GECKO(2252) |     #20 rayon_core::scope::scope_fifo::_$u7b$$u7b$closure$u7d$$u7d$::hbeadbdf37fc94216 /builds/worker/checkouts/gecko/third_party/rust/rayon-core/src/scope/mod.rs:386:18 (libxul.so+0x7e83667)
[task 2020-12-28T21:47:24.918Z] 21:47:24     INFO - GECKO(2252) |     #21 rayon_core::registry::in_worker::h8b0d1785c06c37fe /builds/worker/checkouts/gecko/third_party/rust/rayon-core/src/registry.rs:853:13 (libxul.so+0x79c48bf)
[task 2020-12-28T21:47:24.918Z] 21:47:24     INFO - GECKO(2252) |     #22 rayon_core::scope::scope_fifo::h130c0892da67f6d2 /builds/worker/checkouts/gecko/third_party/rust/rayon-core/src/scope/mod.rs:384:5 (libxul.so+0x79c48bf)
[task 2020-12-28T21:47:24.919Z] 21:47:24     INFO - GECKO(2252) |     #23 style::driver::traverse_dom::_$u7b$$u7b$closure$u7d$$u7d$::hbda164f8585c3663 /builds/worker/checkouts/gecko/servo/components/style/driver.rs:142:21 (libxul.so+0x79c48bf)
[task 2020-12-28T21:47:24.921Z] 21:47:24     INFO - GECKO(2252) |     #24 rayon_core::thread_pool::ThreadPool::install::_$u7b$$u7b$closure$u7d$$u7d$::hd892989668ed046c /builds/worker/checkouts/gecko/third_party/rust/rayon-core/src/thread_pool/mod.rs:132:40 (libxul.so+0x79c48bf)
[task 2020-12-28T21:47:24.922Z] 21:47:24     INFO - GECKO(2252) |     #25 rayon_core::registry::in_worker::h8b0d1785c06c37fe /builds/worker/checkouts/gecko/third_party/rust/rayon-core/src/registry.rs:853:13 (libxul.so+0x79b8645)
[task 2020-12-28T21:47:24.923Z] 21:47:24     INFO - GECKO(2252) |     #26 rayon_core::scope::scope_fifo::h130c0892da67f6d2 /builds/worker/checkouts/gecko/third_party/rust/rayon-core/src/scope/mod.rs:384:5 (libxul.so+0x79b8645)
[task 2020-12-28T21:47:24.927Z] 21:47:24     INFO - GECKO(2252) |     #27 style::driver::traverse_dom::_$u7b$$u7b$closure$u7d$$u7d$::hbda164f8585c3663 /builds/worker/checkouts/gecko/servo/components/style/driver.rs:142:21 (libxul.so+0x79b8645)
[task 2020-12-28T21:47:24.927Z] 21:47:24     INFO - GECKO(2252) |     #28 rayon_core::thread_pool::ThreadPool::install::_$u7b$$u7b$closure$u7d$$u7d$::hd892989668ed046c /builds/worker/checkouts/gecko/third_party/rust/rayon-core/src/thread_pool/mod.rs:132:40 (libxul.so+0x79b8645)
[task 2020-12-28T21:47:24.928Z] 21:47:24     INFO - GECKO(2252) |     #29 rayon_core::registry::Registry::in_worker_cold::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha733691f5e269a42 /builds/worker/checkouts/gecko/third_party/rust/rayon-core/src/registry.rs:501:21 (libxul.so+0x79b8645)
[task 2020-12-28T21:47:24.928Z] 21:47:24     INFO - GECKO(2252) |     #30 _$LT$rayon_core..job..StackJob$LT$L$C$F$C$R$GT$$u20$as$u20$rayon_core..job..Job$GT$::execute::call::_$u7b$$u7b$closure$u7d$$u7d$::hddc07ab7516571c9 /builds/worker/checkouts/gecko/third_party/rust/rayon-core/src/job.rs:113:21 (libxul.so+0x79b8645)
[task 2020-12-28T21:47:24.928Z] 21:47:24     INFO - GECKO(2252) |     #31 _$LT$std..panic..AssertUnwindSafe$LT$F$GT$$u20$as$u20$core..ops..function..FnOnce$LT$$LP$$RP$$GT$$GT$::call_once::h320d84c75c343cdf /builds/worker/fetches/rustc/lib/rustlib/src/rust/library/std/src/panic.rs:322:9 (libxul.so+0x79b8645)
[task 2020-12-28T21:47:24.928Z] 21:47:24     INFO - GECKO(2252) |     #32 std::panicking::try::do_call::h91103d54b2ff1074 /builds/worker/fetches/rustc/lib/rustlib/src/rust/library/std/src/panicking.rs:381:40 (libxul.so+0x79b8645)
[task 2020-12-28T21:47:24.928Z] 21:47:24     INFO - GECKO(2252) |     #33 std::panicking::try::haa8962f9acd40bd8 /builds/worker/fetches/rustc/lib/rustlib/src/rust/library/std/src/panicking.rs:345:19 (libxul.so+0x79b8645)
[task 2020-12-28T21:47:24.928Z] 21:47:24     INFO - GECKO(2252) |     #34 std::panic::catch_unwind::h5d100baa0c5c4e34 /builds/worker/fetches/rustc/lib/rustlib/src/rust/library/std/src/panic.rs:396:14 (libxul.so+0x79b8645)
[task 2020-12-28T21:47:24.929Z] 21:47:24     INFO - GECKO(2252) |     #35 rayon_core::unwind::halt_unwinding::h8cc2f39465a3811a /builds/worker/checkouts/gecko/third_party/rust/rayon-core/src/unwind.rs:17:5 (libxul.so+0x79b8645)
[task 2020-12-28T21:47:24.929Z] 21:47:24     INFO - GECKO(2252) |     #36 _$LT$rayon_core..job..StackJob$LT$L$C$F$C$R$GT$$u20$as$u20$rayon_core..job..Job$GT$::execute::h5f4021c9b7efb327 /builds/worker/checkouts/gecko/third_party/rust/rayon-core/src/job.rs:119:38 (libxul.so+0x79b8645)
[task 2020-12-28T21:47:24.929Z] 21:47:24     INFO - GECKO(2252) |     #37 rayon_core::job::JobRef::execute::h48df79685489e5cf /builds/worker/checkouts/gecko/third_party/rust/rayon-core/src/job.rs:59:9 (libxul.so+0x79c9bc0)
[task 2020-12-28T21:47:24.933Z] 21:47:24     INFO - GECKO(2252) |     #38 rayon_core::registry::WorkerThread::execute::h81f6c63920e7850c /builds/worker/checkouts/gecko/third_party/rust/rayon-core/src/registry.rs:735:9 (libxul.so+0x79c9bc0)
[task 2020-12-28T21:47:24.933Z] 21:47:24     INFO - GECKO(2252) |     #39 rayon_core::registry::WorkerThread::wait_until_cold::h384edb5dc1abaa6a /builds/worker/checkouts/gecko/third_party/rust/rayon-core/src/registry.rs:719:17 (libxul.so+0x79c9bc0)
[task 2020-12-28T21:47:24.933Z] 21:47:24     INFO - GECKO(2252) |     #40 rayon_core::registry::WorkerThread::wait_until::h89c4deec4eec6db3 /builds/worker/checkouts/gecko/third_party/rust/rayon-core/src/registry.rs:693:13 (libxul.so+0x7e83667)
[task 2020-12-28T21:47:24.934Z] 21:47:24     INFO - GECKO(2252) |     #41 rayon_core::registry::main_loop::hde06ad72fd6c2df9 /builds/worker/checkouts/gecko/third_party/rust/rayon-core/src/registry.rs:813:5 (libxul.so+0x7e83667)
[task 2020-12-28T21:47:24.934Z] 21:47:24     INFO - GECKO(2252) |     #42 rayon_core::registry::ThreadBuilder::run::ha1860aaf6809b06a /builds/worker/checkouts/gecko/third_party/rust/rayon-core/src/registry.rs:58:18 (libxul.so+0x7e83667)
[task 2020-12-28T21:47:24.934Z] 21:47:24     INFO - GECKO(2252) |     #43 _$LT$rayon_core..registry..DefaultSpawn$u20$as$u20$rayon_core..registry..ThreadSpawn$GT$::spawn::_$u7b$$u7b$closure$u7d$$u7d$::h5fd353ba7da3769a /builds/worker/checkouts/gecko/third_party/rust/rayon-core/src/registry.rs:103:20 (libxul.so+0x7e83667)
[task 2020-12-28T21:47:24.935Z] 21:47:24     INFO - GECKO(2252) |     #44 std::sys_common::backtrace::__rust_begin_short_backtrace::hd6efe03a374d619f /builds/worker/fetches/rustc/lib/rustlib/src/rust/library/std/src/sys_common/backtrace.rs:125:18 (libxul.so+0x7e83667)
[task 2020-12-28T21:47:24.943Z] 21:47:24     INFO - GECKO(2252) |     #45 std::thread::Builder::spawn_unchecked::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::h7a4a7725c8d91b3d /builds/worker/fetches/rustc/lib/rustlib/src/rust/library/std/src/thread/mod.rs:474:17 (libxul.so+0x7e851d2)
[task 2020-12-28T21:47:24.943Z] 21:47:24     INFO - GECKO(2252) |     #46 _$LT$std..panic..AssertUnwindSafe$LT$F$GT$$u20$as$u20$core..ops..function..FnOnce$LT$$LP$$RP$$GT$$GT$::call_once::h84178922f96f6f06 /builds/worker/fetches/rustc/lib/rustlib/src/rust/library/std/src/panic.rs:322:9 (libxul.so+0x7e851d2)
[task 2020-12-28T21:47:24.944Z] 21:47:24     INFO - GECKO(2252) |     #47 std::panicking::try::do_call::h30bfd825f82c3a25 /builds/worker/fetches/rustc/lib/rustlib/src/rust/library/std/src/panicking.rs:381:40 (libxul.so+0x7e851d2)
[task 2020-12-28T21:47:24.944Z] 21:47:24     INFO - GECKO(2252) |     #48 std::panicking::try::hc53d555ee883faa9 /builds/worker/fetches/rustc/lib/rustlib/src/rust/library/std/src/panicking.rs:345:19 (libxul.so+0x7e851d2)
[task 2020-12-28T21:47:24.944Z] 21:47:24     INFO - GECKO(2252) |     #49 std::panic::catch_unwind::h332fbd7f322c540f /builds/worker/fetches/rustc/lib/rustlib/src/rust/library/std/src/panic.rs:396:14 (libxul.so+0x7e851d2)
[task 2020-12-28T21:47:24.944Z] 21:47:24     INFO - GECKO(2252) |     #50 std::thread::Builder::spawn_unchecked::_$u7b$$u7b$closure$u7d$$u7d$::h72e62b7ba5bd599e /builds/worker/fetches/rustc/lib/rustlib/src/rust/library/std/src/thread/mod.rs:473:30 (libxul.so+0x7e851d2)
[task 2020-12-28T21:47:24.944Z] 21:47:24     INFO - GECKO(2252) |     #51 core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hd2e56c51834f0baf /builds/worker/fetches/rustc/lib/rustlib/src/rust/library/core/src/ops/function.rs:227:5 (libxul.so+0x7e851d2)
[task 2020-12-28T21:47:24.944Z] 21:47:24     INFO - GECKO(2252) |     #52 std::thread::Builder::spawn_unchecked::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::h7a4a7725c8d91b3d /builds/worker/fetches/rustc/lib/rustlib/src/rust/library/std/src/thread/mod.rs:474:17 (libxul.so+0x7e844ef)
[task 2020-12-28T21:47:24.945Z] 21:47:24     INFO - GECKO(2252) |     #53 _$LT$std..panic..AssertUnwindSafe$LT$F$GT$$u20$as$u20$core..ops..function..FnOnce$LT$$LP$$RP$$GT$$GT$::call_once::h84178922f96f6f06 /builds/worker/fetches/rustc/lib/rustlib/src/rust/library/std/src/panic.rs:322:9 (libxul.so+0x7e844ef)
[task 2020-12-28T21:47:24.945Z] 21:47:24     INFO - GECKO(2252) |     #54 std::panicking::try::do_call::h30bfd825f82c3a25 /builds/worker/fetches/rustc/lib/rustlib/src/rust/library/std/src/panicking.rs:381:40 (libxul.so+0x7e844ef)
[task 2020-12-28T21:47:24.947Z] 21:47:24     INFO - GECKO(2252) |     #55 std::panicking::try::hc53d555ee883faa9 /builds/worker/fetches/rustc/lib/rustlib/src/rust/library/std/src/panicking.rs:345:19 (libxul.so+0x7e844ef)
[task 2020-12-28T21:47:24.947Z] 21:47:24     INFO - GECKO(2252) |     #56 std::panic::catch_unwind::h332fbd7f322c540f /builds/worker/fetches/rustc/lib/rustlib/src/rust/library/std/src/panic.rs:396:14 (libxul.so+0x7e844ef)
[task 2020-12-28T21:47:24.947Z] 21:47:24     INFO - GECKO(2252) |     #57 std::thread::Builder::spawn_unchecked::_$u7b$$u7b$closure$u7d$$u7d$::h72e62b7ba5bd599e /builds/worker/fetches/rustc/lib/rustlib/src/rust/library/std/src/thread/mod.rs:473:30 (libxul.so+0x7e844ef)
[task 2020-12-28T21:47:24.947Z] 21:47:24     INFO - GECKO(2252) |     #58 core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hd2e56c51834f0baf /builds/worker/fetches/rustc/lib/rustlib/src/rust/library/core/src/ops/function.rs:227:5 (libxul.so+0x7e844ef)
[task 2020-12-28T21:47:24.947Z] 21:47:24     INFO - GECKO(2252) |     #59 _$LT$alloc..boxed..Box$LT$F$C$A$GT$$u20$as$u20$core..ops..function..FnOnce$LT$Args$GT$$GT$::call_once::hb4d0520786147807 /builds/worker/fetches/rustc/lib/rustlib/src/rust/library/alloc/src/boxed.rs:1307:9 (libxul.so+0x7e844ef)
[task 2020-12-28T21:47:24.948Z] 21:47:24     INFO - GECKO(2252) |     #60 _$LT$alloc..boxed..Box$LT$F$C$A$GT$$u20$as$u20$core..ops..function..FnOnce$LT$Args$GT$$GT$::call_once::h7b3e75c823aaab91 /builds/worker/fetches/rustc/lib/rustlib/src/rust/library/alloc/src/boxed.rs:1307:9 (libxul.so+0x7e844ef)
[task 2020-12-28T21:47:24.948Z] 21:47:24     INFO - GECKO(2252) |     #61 std::sys::unix::thread::Thread::new::thread_start::h4b687605f586dc2f /builds/worker/fetches/rustc/lib/rustlib/src/rust/library/std/src/sys/unix/thread.rs:71:17 (libxul.so+0x7e844ef)
[task 2020-12-28T21:47:24.948Z] 21:47:24     INFO - GECKO(2252) |     #62 __tsan_thread_start_func /builds/worker/fetches/llvm-project/llvm/projects/compiler-rt/lib/tsan/rtl/tsan_interceptors_posix.cpp:956:15 (libxul.so+0x7fb63b6)
[task 2020-12-28T21:47:24.948Z] 21:47:24     INFO - GECKO(2252) |     #63 malloc /builds/worker/fetches/llvm-project/llvm/projects/compiler-rt/lib/tsan/rtl/tsan_interceptors_posix.cpp:652:5 (firefox+0x565ec)
[task 2020-12-28T21:47:24.950Z] 21:47:24     INFO - GECKO(2252) |   Previous read of size 8 at 0x7b7000133df8 by thread T22:
[task 2020-12-28T21:47:24.950Z] 21:47:24     INFO - GECKO(2252) |     [failed to restore the stack]

> [task 2020-12-28T21:47:25.096Z] 21:47:25     INFO - GECKO(2252) |     #56 RunInternal /builds/worker/checkouts/gecko/ipc/chromium/src/base/message_loop.cc:334:10 (libxul.so+0x14875ca)
[task 2020-12-28T21:47:25.097Z] 21:47:25     INFO - GECKO(2252) |     #57 RunHandler /builds/worker/checkouts/gecko/ipc/chromium/src/base/message_loop.cc:327:3 (libxul.so+0x14875ca)
[task 2020-12-28T21:47:25.098Z] 21:47:25     INFO - GECKO(2252) |     #58 MessageLoop::Run() /builds/worker/checkouts/gecko/ipc/chromium/src/base/message_loop.cc:309:3 (libxul.so+0x14875ca)
[task 2020-12-28T21:47:25.098Z] 21:47:25     INFO - GECKO(2252) |     #59 XRE_InitChildProcess(int, char**, XREChildData const*) /builds/worker/checkouts/gecko/toolkit/xre/nsEmbedFunctions.cpp:733:34 (libxul.so+0x141244c)
[task 2020-12-28T21:47:25.099Z] 21:47:25     INFO - GECKO(2252) |     #60 mozilla::BootstrapImpl::XRE_InitChildProcess(int, char**, XREChildData const*) /builds/worker/checkouts/gecko/toolkit/xre/Bootstrap.cpp:67:12 (libxul.so+0x6702eaa)
[task 2020-12-28T21:47:25.100Z] 21:47:25     INFO - GECKO(2252) |     #61 content_process_main /builds/worker/checkouts/gecko/browser/app/../../ipc/contentproc/plugin-container.cpp:57:28 (libxul.so+0x670aae2)
[task 2020-12-28T21:47:25.101Z] 21:47:25     INFO - GECKO(2252) |     #62 main /builds/worker/checkouts/gecko/browser/app/nsBrowserApp.cpp:305:18 (libxul.so+0x670aae2)
[task 2020-12-28T21:47:25.101Z] 21:47:25     INFO - GECKO(2252) |     #63 __libc_start_main /build/glibc-2ORdQG/glibc-2.27/csu/../csu/libc-start.c:310 (firefox+0xc78f2)
[task 2020-12-28T21:47:25.103Z] 21:47:25     INFO - GECKO(2252) |     #64 pthread_create /builds/worker/fetches/llvm-project/llvm/projects/compiler-rt/lib/tsan/rtl/tsan_interceptors_posix.cpp:966:3 (libc.so.6+0x21b96)
[task 2020-12-28T21:47:25.104Z] 21:47:25     INFO - GECKO(2252) | SUMMARY: ThreadSanitizer: data race /builds/worker/checkouts/gecko/servo/components/style/parallel.rs:212:9 in style::parallel::top_down_dom::h007801929bd9b74c
[task 2020-12-28T21:47:25.104Z] 21:47:25     INFO - GECKO(2252) | ==================
[task 2020-12-28T21:49:27.474Z] 21:49:27     INFO - GECKO(2252) | 1609192167463	addons.xpi	ERROR	System addon update list error Error: got node name: html, expected: updates
[task 2020-12-28T21:50:51.931Z] 21:50:51     INFO - TEST-INFO | started process screentopng
[task 2020-12-28T21:50:52.181Z] 21:50:52     INFO - TEST-INFO | screentopng: exit 0
[task 2020-12-28T21:50:52.182Z] 21:50:52     INFO - <snipped 46 output lines - if you need more context, please use SimpleTest.requestCompleteLog() in your test>
[task 2020-12-28T21:50:52.182Z] 21:50:52     INFO - Buffered messages logged at 21:47:02
[task 2020-12-28T21:50:52.184Z] 21:50:52     INFO - TEST-PASS | browser/base/content/test/siteIdentity/browser_identity_UI.js | location matches for test #6 (view-source HTTPS) - 
[task 2020-12-28T21:50:52.185Z] 21:50:52     INFO - TEST-PASS | browser/base/content/test/siteIdentity/browser_identity_UI.js | hostForDisplay matches for test #6 (view-source HTTPS) - 
[task 2020-12-28T21:50:52.186Z] 21:50:52     INFO - Waiting for the Control Center to be shown
[task 2020-12-28T21:50:52.186Z] 21:50:52     INFO - TEST-PASS | browser/base/content/test/siteIdentity/browser_identity_UI.js | Control Center is visible - 
[task 2020-12-28T21:50:52.187Z] 21:50:52     INFO - TEST-PASS | browser/base/content/test/siteIdentity/browser_identity_UI.js | identity UI header shows the host for test #6 (view-source HTTPS) - ```