Bug: Intermittent browser/base/content/test/tabMediaIndicator/browser_mediaplayback_audibility_change.js | Test timed out -
Status: RESOLVED
Priority: P5
Resolution: DUPLICATE
Created: 2020-11-23 17:45:27+00:00
Resolved: 2020-12-07 06:19:43+00:00

**Filed by:** ccoroiu [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer?job_id=322647432&repo=autoland
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/Ea5bcB6MSXakmk9yzKfjbQ/runs/0/artifacts/public/logs/live_backing.log

---
```
task 2020-11-23T16:00:38.985Z] 16:00:38     INFO - TEST-PASS | browser/base/content/test/tabMediaIndicator/browser_mediaplayback_audibility_change.js | Tab sound indicator appears - 
[task 2020-11-23T16:00:38.985Z] 16:00:38     INFO - sound indicator should disappear when audio becomes silent
[task 2020-11-23T16:00:38.985Z] 16:00:38     INFO - Tab sound indicator doesn't disappear yet
[task 2020-11-23T16:00:38.985Z] 16:00:38     INFO - Buffered messages logged at 15:59:10
[task 2020-11-23T16:00:38.986Z] 16:00:38     INFO - Console message: [JavaScript Warning: "Cannot play media. No decoders for requested formats: video/webm" {file: "http://example.com/browser/browser/base/content/test/tabMediaIndicator/file_empty.html" line: 0}]
[task 2020-11-23T16:00:38.986Z] 16:00:38     INFO - Buffered messages finished
[task 2020-11-23T16:00:38.986Z] 16:00:38     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/tabMediaIndicator/browser_mediaplayback_audibility_change.js | Test timed out - 
[task 2020-11-23T16:00:38.986Z] 16:00:38     INFO - GECKO(3220) | MEMORY STAT | vsize 2104274MB | vsizeMaxContiguous 67945479MB | residentFast 251MB | heapAllocated 74MB
[task 2020-11-23T16:00:38.986Z] 16:00:38     INFO - TEST-OK | browser/base/content/test/tabMediaIndicator/browser_mediaplayback_audibility_change.js | took 90108ms
[task 2020-11-23T16:00:38.987Z] 16:00:38     INFO - Not taking screenshot here: see the one that was previously logged
[task 2020-11-23T16:00:38.987Z] 16:00:38     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/tabMediaIndicator/browser_mediaplayback_audibility_change.js | Found a tab after previous test timed out: http://example.com/browser/browser/base/content/test/tabMediaIndicator/file_empty.html - 
[task 2020-11-23T16:00:38.987Z] 16:00:38     INFO - GECKO(3220) | [Parent 8388, Main Thread] WARNING: 'aOwner->IsDiscarded()', file /builds/worker/workspace/obj-build/dist/include/mozilla/dom/SyncedContextInlines.h:36
[task 2020-11-23T16:00:39.005Z] 16:00:39     INFO - GECKO(3220) | [Child 7476: Main Thread]: I/DocShellAndDOMWindowLeak ++DOCSHELL 000001A624825000 == 1 [pid = 7476] [id = 7]
[task 2020-11-23T16:00:39.005Z] 16:00:39     INFO - GECKO(3220) | [Child 7476: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 1 (000001A62ACCC3C0) [pid = 7476] [serial = 22] [outer = 0000000000000000]
[task 2020-11-23T16:00:39.005Z] 16:00:39     INFO - GECKO(3220) | [Child 7476: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 2 (000001A6248B1000) [pid = 7476] [serial = 23] [outer = 000001A62ACCC3C0]
[task 2020-11-23T16:00:39.026Z] 16:00:39     INFO - checking window state
[task 2020-11-23T16:00:39.044Z] 16:00:39     INFO - GECKO(3220) | JavaScript error: resource://gre/actors/AudioPlaybackParent.jsm, line 24: TypeError: can't access property "audioPlaybackStopped", browser is null```