Intermittent timeout in /_mozilla/mozilla/css-paint-api/paint2d-paths.html

[jdm]

cc @asajeffrey

  ▶ TIMEOUT [expected FAIL] /_mozilla/mozilla/css-paint-api/paint2d-paths.html
  │ 
  │ VMware, Inc.
  │ Gallium 0.4 on softpipe
  │ 3.3 (Core Profile) Mesa 12.0.1
  │ Loading blob blob:http://web-platform.test:8000/eca34a9a71974c0e9c34d8bb2125bebf
  │ Worklet thread died?: RecvError (thread LayoutThread PipelineId { namespace_id: PipelineNamespaceId(0), index: PipelineIndex(0) }, at src/libcore/result.rs:860)
  │ Loading blob blob:http://web-platform.test:8000/eca34a9a71974c0e9c34d8bb2125bebf
  │ 2017-08-18 01:19:59.147 servo[49225:395196288] Metadata.framework [Error]: couldn't get the client port
  │ stack backtrace:
  │    0:        0x1093ab26e - backtrace::backtrace::trace::hb2a815d7a25bb200
  │    1:        0x1093ab2ac - backtrace::capture::Backtrace::new::h8d167d15706e03e2
  │    2:        0x108d8e8e4 - servo::main::_$u7b$$u7b$closure$u7d$$u7d$::h358312fbff696eee
  │    3:        0x10adc7241 - std::panicking::rust_panic_with_hook::h7ead43b379200c35
  │    4:        0x10adc7064 - std::panicking::begin_panic::hec2284e068239760
  │    5:        0x10adc6fb2 - std::panicking::begin_panic_fmt::h252ee6ee5d3353e3
  │    6:        0x10adc6f1a - rust_begin_unwind
  │    7:        0x10adf21c3 - core::panicking::panic_fmt::h24026993fab850dc
  │    8:        0x109926fdb - core::result::unwrap_failed::h74b06f15c090b6aa
  │    9:        0x109bb60e4 - _$LT$script..dom..paintworkletglobalscope..PaintWorkletGlobalScope..painter..WorkletPainter$u20$as$u20$script_traits..Painter$GT$::draw_a_paint_image::hf9d566b8aad1ad5f
  │   10:        0x109578972 - _$LT$layout_thread..RegisteredPainterImpl$u20$as$u20$script_traits..Painter$GT$::draw_a_paint_image::h67271e13fbf66382
  │   11:        0x10a8674d9 - _$LT$layout..fragment..Fragment$u20$as$u20$layout..display_list_builder..FragmentDisplayListBuilding$GT$::build_display_list_for_background_paint_worklet::h6e0a5dfb1047d176
  │   12:        0x10a8657b6 - _$LT$layout..fragment..Fragment$u20$as$u20$layout..display_list_builder..FragmentDisplayListBuilding$GT$::build_display_list_for_background_if_applicable::h751c845bddbdaf1f
  │   13:        0x10a86ca66 - _$LT$layout..fragment..Fragment$u20$as$u20$layout..display_list_builder..FragmentDisplayListBuilding$GT$::build_display_list::h1e2ec9deb4da5afa
  │   14:        0x10a857e84 - _$LT$layout..block..BlockFlow$u20$as$u20$layout..flow..Flow$GT$::build_display_list::h8912a5a41995d097
  │   15:        0x10a8b70ba - layout::traversal::BuildDisplayList::traverse::ha7d8fe7ab04a8be8
  │   16:        0x10a8b7102 - layout::traversal::BuildDisplayList::traverse::ha7d8fe7ab04a8be8
  │   17:        0x10a8b7102 - layout::traversal::BuildDisplayList::traverse::ha7d8fe7ab04a8be8
  │   18:        0x10a89e9d2 - layout::sequential::build_display_list_for_subtree::h4db831a5b0758a8f
  │   19:        0x109576921 - layout_thread::LayoutThread::perform_post_style_recalc_layout_passes::h4b40f364610cf930
  │   20:        0x109571288 - layout_thread::LayoutThread::handle_reflow::h576d77985beaf7b1
  │   21:        0x109565a83 - layout_thread::LayoutThread::handle_request_helper::h0b25097f70ef8991
  │   22:        0x10955fa97 - _$LT$layout_thread..LayoutThread$u20$as$u20$layout_traits..LayoutThreadFactory$GT$::create::_$u7b$$u7b$closure$u7d$$u7d$::hea5e4e30fd5aa18b
  │   23:        0x1094dd2ad - std::sys_common::backtrace::__rust_begin_short_backtrace::h4d3fa5386758884d
  │   24:        0x1094dde6d - std::panicking::try::do_call::h613feab5df869b66
  │   25:        0x10adc83dc - __rust_maybe_catch_panic
  │   26:        0x10950d385 - _$LT$F$u20$as$u20$alloc..boxed..FnBox$LT$A$GT$$GT$::call_box::h6cab8296ba18d4bf
  │   27:        0x10adc41fb - std::sys::imp::thread::Thread::new::thread_start::hd002bdea82a6ac49
  │   28:     0x7fff91d15059 - _pthread_body
  │   29:     0x7fff91d14fd6 - _pthread_start
  └ ERROR:servo: Worklet thread died?: RecvError