#[markdown(off)]
Filed by: egao [at] mozilla.com

https://treeherder.mozilla.org/logviewer.html#?job_id=234713629&repo=try

https://queue.taskcluster.net/v1/task/b0FQkGroSsaqx8X_WOi96A/runs/0/artifacts/public/logs/live_backing.log

Test: bc5

Platform: windows10-aarch64

Context (two examples due to space constraints):
06:03:18 INFO - TEST-START | toolkit/content/tests/browser/browser_audioCompeting.js
06:03:18 INFO - GECKO(8072) | [Child 8808, MediaPlayback #2] WARNING: 1d30eb6a4c0 Can't get cubeb context!: file z:/build/build/src/dom/media/AudioStream.cpp, line 351
06:03:18 INFO - GECKO(8072) | [Child 8808, MediaPlayback #2] WARNING: Decoder=1d30ebed400 [OnMediaSinkAudioError]: file z:/build/build/src/dom/media/MediaDecoderStateMachine.cpp, line 3627
06:03:18 INFO - GECKO(8072) | [Child 8808, MediaPlayback #2] WARNING: Decoder=1d30ebed400 Decode error: NS_ERROR_DOM_MEDIA_MEDIASINK_ERR (0x806e000b) - OnMediaSinkAudioError: file z:/build/build/src/dom/media/MediaDecoderStateMachine.cpp, line 3296
06:04:03 INFO - Not taking screenshot here: see the one that was previously logged
06:04:03 INFO - Buffered messages logged at 06:03:18
06:04:03 INFO - Entering test bound setup_test_preference
06:04:03 INFO - Leaving test bound setup_test_preference
06:04:03 INFO - Entering test bound cross_tabs_audio_competing
06:04:03 INFO - - open tab 1 in foreground -
06:04:03 INFO - Playing state doens't match, wait for attributes changes.
06:04:03 INFO - Console message: [JavaScript Warning: "Media resource https://example.com/browser/toolkit/content/tests/browser/audio.ogg could not be decoded." {file: "https://example.com/browser/toolkit/content/tests/browser/file_multipleAudio.html" line: 0}]
06:04:03 INFO - Buffered messages logged at 06:03:19
06:04:03 INFO - Console message: [JavaScript Warning: "Media resource https://example.com/browser/toolkit/content/tests/browser/audio.ogg could not be decoded, error: Error Code: NS_ERROR_DOM_MEDIA_MEDIASINK_ERR (0x806e000b)
06:04:03 INFO - Details: OnMediaSinkAudioError" {file: "https://example.com/browser/toolkit/content/tests/browser/file_multipleAudio.html" line: 0}]
06:04:03 INFO - Buffered messages finished
06:04:03 INFO - TEST-UNEXPECTED-FAIL | toolkit/content/tests/browser/browser_audioCompeting.js | Test timed out -
06:04:03 INFO - GECKO(8072) | MEMORY STAT | vsize 5808MB | vsizeMaxContiguous 70005086MB | residentFast 211MB | heapAllocated 71MB
06:04:03 INFO - TEST-OK | toolkit/content/tests/browser/browser_audioCompeting.js | took 45100ms
06:04:03 INFO - Not taking screenshot here: see the one that was previously logged
06:04:03 INFO - TEST-UNEXPECTED-FAIL | toolkit/content/tests/browser/browser_audioCompeting.js | Found a tab after previous test timed out: https://example.com/browser/toolkit/content/tests/browser/file_multipleAudio.html -
06:04:03 INFO - checking window state
06:04:03 INFO - TEST-START | toolkit/content/tests/browser/browser_audioCompeting_onlyForActiveAgent.js
06:04:04 INFO - GECKO(8072) | [Child 7272, MediaPlayback #2] WARNING: 1ebeed17040 Can't get cubeb context!: file z:/build/build/src/dom/media/AudioStream.cpp, line 351
06:04:04 INFO - GECKO(8072) | [Child 7272, MediaPlayback #3] WARNING: 1ebedf92f40 Can't get cubeb context!: file z:/build/build/src/dom/media/AudioStream.cpp, line 351
06:04:04 INFO - GECKO(8072) | [Child 7272, MediaPlayback #2] WARNING: Decoder=1ebe7df8400 [OnMediaSinkAudioError]: file z:/build/build/src/dom/media/MediaDecoderStateMachine.cpp, line 3627
06:04:04 INFO - GECKO(8072) | [Child 7272, MediaPlayback #3] WARNING: Decoder=1ebe7dfb800 [OnMediaSinkAudioError]: file z:/build/build/src/dom/media/MediaDecoderStateMachine.cpp, line 3627
06:04:04 INFO - GECKO(8072) | [Child 7272, MediaPlayback #2] WARNING: Decoder=1ebe7df8400 Decode error: NS_ERROR_DOM_MEDIA_MEDIASINK_ERR (0x806e000b) - OnMediaSinkAudioError: file z:/build/build/src/dom/media/MediaDecoderStateMachine.cpp, line 3296
06:04:04 INFO - GECKO(8072) | [Child 7272, MediaPlayback #3] WARNING: Decoder=1ebe7dfb800 Decode error: NS_ERROR_DOM_MEDIA_MEDIASINK_ERR (0x806e000b) - OnMediaSinkAudioError: file z:/build/build/src/dom/media/MediaDecoderStateMachine.cpp, line 3296
06:04:48 INFO - Not taking screenshot here: see the one that was previously logged
06:04:48 INFO - Buffered messages logged at 06:04:03
06:04:48 INFO - Entering test bound setup_test_preference
06:04:48 INFO - Leaving test bound setup_test_preference
06:04:48 INFO - Entering test bound test_suspended_pause_disposable
06:04:48 INFO - - page should have playing audio -
06:04:48 INFO - Buffered messages logged at 06:04:04
06:04:48 INFO - Console message: [JavaScript Warning: "Media resource https://example.com/browser/toolkit/content/tests/browser/audio.ogg could not be decoded." {file: "https://example.com/browser/toolkit/content/tests/browser/file_multiplePlayingAudio.html" line: 0}]
06:04:48 INFO - Console message: [JavaScript Warning: "Media resource https://example.com/browser/toolkit/content/tests/browser/audio.ogg could not be decoded." {file: "https://example.com/browser/toolkit/content/tests/browser/file_multiplePlayingAudio.html" line: 0}]
06:04:48 INFO - Buffered messages logged at 06:04:05
06:04:48 INFO - Console message: [JavaScript Warning: "Media resource https://example.com/browser/toolkit/content/tests/browser/audio.ogg could not be decoded, error: Error Code: NS_ERROR_DOM_MEDIA_MEDIASINK_ERR (0x806e000b)
06:04:48 INFO - Details: OnMediaSinkAudioError" {file: "https://example.com/browser/toolkit/content/tests/browser/file_multiplePlayingAudio.html" line: 0}]
06:04:48 INFO - Buffered messages finished
06:04:48 INFO - TEST-UNEXPECTED-FAIL | toolkit/content/tests/browser/browser_audioCompeting_onlyForActiveAgent.js | Test timed out -
06:04:48 INFO - GECKO(8072) | MEMORY STAT | vsize 5807MB | vsizeMaxContiguous 70005086MB | residentFast 212MB | heapAllocated 75MB
06:04:48 INFO - TEST-OK | toolkit/content/tests/browser/browser_audioCompeting_onlyForActiveAgent.js | took 45084ms
06:04:48 INFO - Not taking screenshot here: see the one that was previously logged
06:04:48 INFO - TEST-UNEXPECTED-FAIL | toolkit/content/tests/browser/browser_audioCompeting_onlyForActiveAgent.js | Found a tab after previous test timed out: https://example.com/browser/toolkit/content/tests/browser/file_multiplePlayingAudio.html -

:dmajor - jmaher states you might know the owner that may be able to look into these failures. It's a large number of tests that fail but most if not all of them are with audio-related tests.

Can we have a run of this with MOZ_LOG=cubeb:5 ?