Bug: Intermittent TEST-UNEXPECTED-TIMEOUT | browser/components/privatebrowsing/test/browser/browser_privatebrowsing_windowtitle.js | application timed out after 370 seconds with no output
Status: RESOLVED
Priority: P5
Resolution: INCOMPLETE
Created: 2021-02-03 13:24:43+00:00
Resolved: 2021-03-02 17:05:22+00:00

**Filed by:** btara [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer?job_id=328696534&repo=autoland
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/HcFTtUuJSv-iSxzhVz73Ug/runs/0/artifacts/public/logs/live_backing.log

---
```
[task 2021-02-03T12:13:48.309Z] 12:13:48     INFO - TEST-START | browser/components/privatebrowsing/test/browser/browser_privatebrowsing_windowtitle.js
[task 2021-02-03T12:13:53.060Z] 12:13:53     INFO - GECKO(2240) | JavaScript error: resource:///actors/ContentSearchParent.jsm, line 623: TypeError: can't access property "addEventListener", browser is null
[task 2021-02-03T12:13:53.180Z] 12:13:53     INFO - GECKO(2240) | IPDL protocol error: Handler returned error code!
[task 2021-02-03T12:13:53.180Z] 12:13:53     INFO - GECKO(2240) | ###!!! [Parent][DispatchAsyncMessage] Error: PLayerTransaction::Msg_ReleaseLayer Processing error: message was deserialized, but the handler returned false (indicating failure)
[task 2021-02-03T12:13:53.180Z] 12:13:53     INFO - GECKO(2240) | IPDL protocol error: Handler returned error code!
[task 2021-02-03T12:13:53.180Z] 12:13:53     INFO - GECKO(2240) | ###!!! [Parent][DispatchAsyncMessage] Error: PLayerTransaction::Msg_ReleaseLayer Processing error: message was deserialized, but the handler returned false (indicating failure)
[task 2021-02-03T12:20:39.792Z] 12:20:38     INFO - Buffered messages logged at 12:13:48
[task 2021-02-03T12:20:45.604Z] 12:20:44     INFO - Entering test bound test
[task 2021-02-03T12:20:51.195Z] 12:20:49     INFO - Buffered messages logged at 12:13:51
[task 2021-02-03T12:20:57.653Z] 12:20:56     INFO - TEST-PASS | browser/components/privatebrowsing/test/browser/browser_privatebrowsing_windowtitle.js | The window title for about:blank is correct (outside private browsing mode) - 
[task 2021-02-03T12:21:04.515Z] 12:21:03     INFO - Buffered messages logged at 12:13:52
[task 2021-02-03T12:21:10.614Z] 12:21:09     INFO - TEST-PASS | browser/components/privatebrowsing/test/browser/browser_privatebrowsing_windowtitle.js | The window title for about:blank detached tab is correct (outside private browsing mode) - 
[task 2021-02-03T12:21:17.211Z] 12:21:15     INFO - Buffered messages logged at 12:13:53
[task 2021-02-03T12:21:25.850Z] 12:21:24     INFO - Console message: [JavaScript Error: "TypeError: can't access property "addEventListener", browser is null" {file: "resource:///actors/ContentSearchParent.jsm" line: 623}]
[task 2021-02-03T12:21:28.518Z] 12:21:25     INFO - receiveMessage@resource:///actors/ContentSearchParent.jsm:623:5
[task 2021-02-03T12:21:30.312Z] 12:21:26     INFO - 
[task 2021-02-03T12:21:33.782Z] 12:21:31     INFO - Buffered messages logged at 12:13:55
[task 2021-02-03T12:21:40.476Z] 12:21:39     INFO - Console message: [JavaScript Error: "The character encoding of the HTML document was not declared. The document will render with garbled text in some browser configurations if the document contains characters from outside the US-ASCII range. The character encoding of the page must be declared in the document or in the transfer protocol." {file: "http://mochi.test:8888/browser/browser/components/privatebrowsing/test/browser/browser_privatebrowsing_windowtitle_page.html" line: 0}]
[task 2021-02-03T12:21:43.422Z] 12:21:42     INFO - TEST-PASS | browser/components/privatebrowsing/test/browser/browser_privatebrowsing_windowtitle.js | The window title for http://mochi.test:8888/browser/browser/components/privatebrowsing/test/browser/browser_privatebrowsing_windowtitle_page.html is correct (outside private browsing mode) - 
[task 2021-02-03T12:21:49.012Z] 12:21:47     INFO - Buffered messages logged at 12:13:57
[task 2021-02-03T12:21:52.533Z] 12:21:51     INFO - TEST-PASS | browser/components/privatebrowsing/test/browser/browser_privatebrowsing_windowtitle.js | The window title for http://mochi.test:8888/browser/browser/components/privatebrowsing/test/browser/browser_privatebrowsing_windowtitle_page.html detached tab is correct (outside private browsing mode) - 
[task 2021-02-03T12:21:57.873Z] 12:21:56     INFO - Buffered messages logged at 12:14:01
[task 2021-02-03T12:22:03.173Z] 12:22:01     INFO - TEST-PASS | browser/components/privatebrowsing/test/browser/browser_privatebrowsing_windowtitle.js | The window title for about:privatebrowsing is correct (outside private browsing mode) - 
[task 2021-02-03T12:22:11.084Z] 12:22:09     INFO - Buffered messages logged at 12:14:03
[task 2021-02-03T12:22:15.111Z] 12:22:14     INFO - TEST-PASS | browser/components/privatebrowsing/test/browser/browser_privatebrowsing_windowtitle.js | The window title for about:privatebrowsing detached tab is correct (outside private browsing mode) - 
[task 2021-02-03T12:22:20.794Z] 12:22:19     INFO - Buffered messages logged at 12:14:06
[task 2021-02-03T12:22:26.109Z] 12:22:25     INFO - TEST-PASS | browser/components/privatebrowsing/test/browser/browser_privatebrowsing_windowtitle.js | The window title for about:blank is correct (inside private browsing mode) - 
[task 2021-02-03T12:22:31.620Z] 12:22:30     INFO - Buffered messages logged at 12:14:07
[task 2021-02-03T12:22:38.643Z] 12:22:37     INFO - TEST-PASS | browser/components/privatebrowsing/test/browser/browser_privatebrowsing_windowtitle.js | The window title for about:blank detached tab is correct (inside private browsing mode) - 
[task 2021-02-03T12:22:43.168Z] 12:22:42     INFO - Buffered messages logged at 12:14:12
[task 2021-02-03T12:22:50.149Z] 12:22:48     INFO - Console message: [JavaScript Error: "The character encoding of the HTML document was not declared. The document will render with garbled text in some browser configurations if the document contains characters from outside the US-ASCII range. The character encoding of the page must be declared in the document or in the transfer protocol." {file: "http://mochi.test:8888/browser/browser/components/privatebrowsing/test/browser/browser_privatebrowsing_windowtitle_page.html" line: 0}]
[task 2021-02-03T12:22:57.255Z] 12:22:56     INFO - TEST-PASS | browser/components/privatebrowsing/test/browser/browser_privatebrowsing_windowtitle.js | The window title for http://mochi.test:8888/browser/browser/components/privatebrowsing/test/browser/browser_privatebrowsing_windowtitle_page.html is correct (inside private browsing mode) - 
[task 2021-02-03T12:23:03.692Z] 12:23:02     INFO - Buffered messages logged at 12:14:14
[task 2021-02-03T12:23:10.895Z] 12:23:09     INFO - TEST-PASS | browser/components/privatebrowsing/test/browser/browser_privatebrowsing_windowtitle.js | The window title for http://mochi.test:8888/browser/browser/components/privatebrowsing/test/browser/browser_privatebrowsing_windowtitle_page.html detached tab is correct (inside private browsing mode) - 
[task 2021-02-03T12:23:18.484Z] 12:23:17     INFO - Buffered messages logged at 12:14:18
[task 2021-02-03T12:23:27.097Z] 12:23:26     INFO - TEST-PASS | browser/components/privatebrowsing/test/browser/browser_privatebrowsing_windowtitle.js | The window title for about:privatebrowsing is correct (inside private browsing mode) - 
[task 2021-02-03T12:23:33.290Z] 12:23:31     INFO - Buffered messages finished
[task 2021-02-03T12:23:38.812Z] 12:23:37    ERROR - TEST-UNEXPECTED-TIMEOUT | browser/components/privatebrowsing/test/browser/browser_privatebrowsing_windowtitle.js | application timed out after 370 seconds with no output
[task 2021-02-03T12:23:43.969Z] 12:23:42    ERROR - Force-terminating active process(es).
[task 2021-02-03T12:23:56.387Z] 12:23:54     INFO - Determining child pids from psutil...
[task 2021-02-03T12:24:58.740Z] 12:24:56     INFO - [2304, 2329, 2418, 2452, 2487, 2386]
[task 2021-02-03T12:25:04.553Z] 12:25:03     INFO - ==> process 2240 launched child process 2255
[task 2021-02-03T12:25:09.312Z] 12:25:07     INFO - ==> process 2240 launched child process 2304
[task 2021-02-03T12:25:16.020Z] 12:25:14     INFO - ==> process 2240 launched child process 2329
[task 2021-02-03T12:25:22.003Z] 12:25:20     INFO - ==> process 2240 launched child process 2386
[task 2021-02-03T12:25:27.913Z] 12:25:26     INFO - ==> process 2240 launched child process 2418
[task 2021-02-03T12:25:32.705Z] 12:25:30     INFO - ==> process 2240 launched child process 2452
[task 2021-02-03T12:25:37.224Z] 12:25:35     INFO - ==> process 2240 launched child process 2487
[task 2021-02-03T12:25:51.765Z] 12:25:49     INFO - Found child pids: set([2304, 2386, 2255, 2418, 2452, 2487, 2329])
[task 2021-02-03T12:26:52.872Z] 12:26:51     INFO - Failed to get child procs
[task 2021-02-03T12:26:59.233Z] 12:26:57     INFO - Killing process: 2304
[task 2021-02-03T12:27:15.113Z] 12:27:13     INFO - TEST-INFO | started process screentopng
[task 2021-02-03T12:43:52.754Z] 12:43:52     INFO - Automation Error: mozprocess timed out after 1000 seconds running ['/builds/worker/workspace/build/venv/bin/python', '-u', '/builds/worker/workspace/build/tests/mochitest/runtests.py', u'accessible/tests/browser/e10s/browser.ini', u'accessible/tests/browser/events/browser.ini', u'browser/components/privatebrowsing/test/browser/browser.ini', '--setpref=media.peerconnection.mtransport_process=false', '--setpref=network.process.enabled=false', '--appname=/builds/worker/workspace/build/application/firefox/firefox', '--utility-path=tests/bin', '--extra-profile-file=tests/bin/plugins', u'--symbols-path=https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/OcXVtlT_TAKIbZBD3KXmew/artifacts/public/build/target.crashreporter-symbols.zip', '--certificate-path=tests/certs', '--setpref=webgl.force-enabled=true', '--quiet', '--log-raw=/builds/worker/workspace/build/blobber_upload_dir/mochitest-browser-chrome_raw.log', '--log-errorsummary=/builds/worker/workspace/build/blobber_upload_dir/mochitest-browser-chrome_errorsummary.log', '--use-test-media-devices', '--screenshot-on-fail', '--cleanup-crashes', '--marionette-startup-timeout=180', '--sandbox-read-whitelist=/builds/worker/workspace/build', '--log-raw=-', '--flavor=browser', '--chunk-by-runtime']
[task 2021-02-03T12:43:52.771Z] 12:43:52    ERROR - timed out after 1000 seconds of no output
[task 2021-02-03T12:43:52.771Z] 12:43:52    ERROR - Return code: -15
[task 2021-02-03T12:43:52.771Z] 12:43:52    ERROR - No suite end message was emitted by this harness.```