Filed by: apavel [at] mozilla.com

https://treeherder.mozilla.org/logviewer.html#?job_id=223744957&repo=try

https://queue.taskcluster.net/v1/task/ESIh-wXySiq6EbFKT_MjCg/runs/0/artifacts/public/logs/live_backing.log

[task 2019-01-24T13:27:29.465Z] 13:27:29 INFO - TEST-START | /html/semantics/embedded-content/media-elements/interfaces/TextTrack/addCue.html
[task 2019-01-24T13:27:29.548Z] 13:27:29 INFO - PID 16178 | [Child 16333, Main Thread] WARNING: '!gThread', file /builds/worker/workspace/build/src/xpcom/threads/nsTimerImpl.cpp, line 299
[task 2019-01-24T13:27:29.550Z] 13:27:29 INFO - PID 16178 | [Child 16333, Main Thread] WARNING: '!gThread', file /builds/worker/workspace/build/src/xpcom/threads/nsTimerImpl.cpp, line 299
[task 2019-01-24T13:27:29.550Z] 13:27:29 INFO - PID 16178 | [Child 16333, Main Thread] WARNING: '!gThread', file /builds/worker/workspace/build/src/xpcom/threads/nsTimerImpl.cpp, line 299
[task 2019-01-24T13:27:29.611Z] 13:27:29 INFO - PID 16178 | [Child 16333, Main Thread] WARNING: 'NS_FAILED(rv)', file /builds/worker/workspace/build/src/dom/base/Element.cpp, line 1261
[task 2019-01-24T13:27:29.653Z] 13:27:29 INFO - PID 16178 | --DOCSHELL 0x7f7bc8d97800 == 0 [pid = 16333] [id = {2d46ff19-4b32-479a-9ca2-14bb43e4a3f2}]

[task 2019-01-24T13:28:00.152Z] 13:28:00 WARNING - File "/builds/worker/workspace/build/tests/web-platform/tests/tools/wptrunner/wptrunner/executors/executormarionette.py", line 604, in _run
[task 2019-01-24T13:28:00.153Z] 13:28:00 WARNING - self.result = True, self.func(self.protocol, self.url, self.timeout)
[task 2019-01-24T13:28:00.153Z] 13:28:00 WARNING - File "/builds/worker/workspace/build/tests/web-platform/tests/tools/wptrunner/wptrunner/executors/executormarionette.py", line 712, in do_testharness
[task 2019-01-24T13:28:00.153Z] 13:28:00 WARNING - timeout=10self.timeout_multiplier)
[task 2019-01-24T13:28:00.153Z] 13:28:00 WARNING - File "/builds/worker/workspace/build/tests/web-platform/tests/tools/wptrunner/wptrunner/executors/executormarionette.py", line 226, in get_test_window
[task 2019-01-24T13:28:00.153Z] 13:28:00 WARNING - raise Exception("unable to find test window")
[task 2019-01-24T13:28:00.154Z] 13:28:00 WARNING - Exception: unable to find test window
[task 2019-01-24T13:28:00.155Z] 13:28:00 WARNING -
[task 2019-01-24T13:28:00.155Z] 13:28:00 INFO - PID 16178 | [Parent 16178, Compositor] ###!!! ASSERTION: Cannot find image bridge for process!: 'false', file /builds/worker/workspace/build/src/gfx/layers/ipc/ImageBridgeParent.cpp, line 362
[task 2019-01-24T13:28:00.155Z] 13:28:00 INFO - PID 16178 | [Parent 16178, Compositor] ###!!! ASSERTION: Cannot find image bridge for process!: 'false', file /builds/worker/workspace/build/src/gfx/layers/ipc/ImageBridgeParent.cpp, line 362
[task 2019-01-24T13:28:00.156Z] 13:28:00 INFO - PID 16178 | [Parent 16178, Compositor] ###!!! ASSERTION: Cannot find image bridge for process!: 'false', file /builds/worker/workspace/build/src/gfx/layers/ipc/ImageBridgeParent.cpp, line 362
[task 2019-01-24T13:28:00.156Z] 13:28:00 INFO - PID 16178 | [Parent 16178, Compositor] ###!!! ASSERTION: Cannot find image bridge for process!: 'false', file /builds/worker/workspace/build/src/gfx/layers/ipc/ImageBridgeParent.cpp, line 362
[task 2019-01-24T13:28:00.157Z] 13:28:00 INFO - PID 16178 | [Parent 16178, Compositor] ###!!! ASSERTION: Cannot find image bridge for process!: 'false', file /builds/worker/workspace/build/src/gfx/layers/ipc/ImageBridgeParent.cpp, line 362
[task 2019-01-24T13:28:00.157Z] 13:28:00 INFO - PID 16178 | [Parent 16178, Compositor] ###!!! ASSERTION: Cannot find image bridge for process!: 'false', file /builds/worker/workspace/build/src/gfx/layers/ipc/ImageBridgeParent.cpp, line 362
[task 2019-01-24T13:28:00.158Z] 13:28:00 INFO - TEST-UNEXPECTED-ERROR | /html/semantics/embedded-content/media-elements/interfaces/TextTrack/addCue.html | unable to find test window
[task 2019-01-24T13:28:00.158Z] 13:28:00 INFO - Traceback (most recent call last):
[task 2019-01-24T13:28:00.159Z] 13:28:00 INFO - File "/builds/worker/workspace/build/tests/web-platform/tests/tools/wptrunner/wptrunner/executors/executormarionette.py", line 604, in _run
[task 2019-01-24T13:28:00.159Z] 13:28:00 INFO - self.result = True, self.func(self.protocol, self.url, self.timeout)
[task 2019-01-24T13:28:00.162Z] 13:28:00 INFO - File "/builds/worker/workspace/build/tests/web-platform/tests/tools/wptrunner/wptrunner/executors/executormarionette.py", line 712, in do_testharness
[task 2019-01-24T13:28:00.162Z] 13:28:00 INFO - timeout=10self.timeout_multiplier)
[task 2019-01-24T13:28:00.162Z] 13:28:00 INFO - File "/builds/worker/workspace/build/tests/web-platform/tests/tools/wptrunner/wptrunner/executors/executormarionette.py", line 226, in get_test_window
[task 2019-01-24T13:28:00.163Z] 13:28:00 INFO - raise Exception("unable to find test window")
[task 2019-01-24T13:28:00.163Z] 13:28:00 INFO - Exception: unable to find test window