Bug: Intermittent TEST-UNEXPECTED-TIMEOUT | browser/components/sessionstore/test/browser_cleaner.js | application timed out after 370 seconds with no output
Status: RESOLVED
Priority: P5
Resolution: INCOMPLETE
Created: 2020-12-06 11:48:03+00:00
Resolved: 2021-03-23 17:02:28+00:00

**Filed by:** rmaries [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer?job_id=323690426&repo=mozilla-central
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/P1KC4rauT2mq5EzovhfC5A/runs/1/artifacts/public/logs/live_backing.log

---
```
[task 2020-12-06T10:50:57.080Z] 10:50:57     INFO - TEST-START | browser/components/sessionstore/test/browser_cleaner.js
[task 2020-12-06T10:51:00.652Z] 10:51:00     INFO - GECKO(1552) | JavaScript error: resource:///actors/LightweightThemeChild.jsm, line 38: TypeError: can't access property "docShell", this.contentWindow.top is null
[task 2020-12-06T10:57:18.368Z] 10:57:16     INFO - Buffered messages logged at 10:50:57
[task 2020-12-06T10:57:24.378Z] 10:57:23     INFO - Entering test bound init
[task 2020-12-06T10:57:31.883Z] 10:57:30     INFO - Leaving test bound init
[task 2020-12-06T10:57:37.449Z] 10:57:36     INFO - Entering test bound test_open_and_close
[task 2020-12-06T10:57:39.401Z] 10:57:37     INFO - Buffered messages logged at 10:50:59
[task 2020-12-06T10:57:42.304Z] 10:57:41     INFO - 1. Making sure that before closing, we don't have closedAt
[task 2020-12-06T10:57:47.376Z] 10:57:46     INFO - TEST-PASS | browser/components/sessionstore/test/browser_cleaner.js | 1. Main window doesn't have closedAt - 
[task 2020-12-06T10:57:49.289Z] 10:57:48     INFO - TEST-PASS | browser/components/sessionstore/test/browser_cleaner.js | 1. Second window doesn't have closedAt - 
[task 2020-12-06T10:57:51.507Z] 10:57:50     INFO - TEST-PASS | browser/components/sessionstore/test/browser_cleaner.js | 1. First tab doesn't have closedAt - 
[task 2020-12-06T10:57:53.352Z] 10:57:52     INFO - TEST-PASS | browser/components/sessionstore/test/browser_cleaner.js | 1. Second tab doesn't have closedAt - 
[task 2020-12-06T10:57:56.809Z] 10:57:55     INFO - 2. Making sure that after closing, we have closedAt
[task 2020-12-06T10:58:00.203Z] 10:57:59     INFO - TEST-PASS | browser/components/sessionstore/test/browser_cleaner.js | 2. Main window doesn't have closedAt - 
[task 2020-12-06T10:58:05.702Z] 10:58:04     INFO - TEST-PASS | browser/components/sessionstore/test/browser_cleaner.js | This is a timestamp - 
[task 2020-12-06T10:58:10.612Z] 10:58:09     INFO - TEST-PASS | browser/components/sessionstore/test/browser_cleaner.js | 2. Second window was closed recently - 
[task 2020-12-06T10:58:15.349Z] 10:58:14     INFO - TEST-PASS | browser/components/sessionstore/test/browser_cleaner.js | This is a timestamp - 
[task 2020-12-06T10:58:21.019Z] 10:58:20     INFO - TEST-PASS | browser/components/sessionstore/test/browser_cleaner.js | 2. First tab was closed recently - 
[task 2020-12-06T10:58:24.515Z] 10:58:23     INFO - TEST-PASS | browser/components/sessionstore/test/browser_cleaner.js | This is a timestamp - 
[task 2020-12-06T10:58:30.434Z] 10:58:29     INFO - TEST-PASS | browser/components/sessionstore/test/browser_cleaner.js | 2. Second tab was closed recently - 
[task 2020-12-06T10:58:34.221Z] 10:58:33     INFO - Leaving test bound test_open_and_close
[task 2020-12-06T10:58:40.552Z] 10:58:39     INFO - Entering test bound test_restore
[task 2020-12-06T10:58:44.092Z] 10:58:43     INFO - 3. Making sure that after restoring, we don't have closedAt
[task 2020-12-06T10:58:51.176Z] 10:58:49     INFO - Buffered messages logged at 10:51:00
[task 2020-12-06T10:58:55.417Z] 10:58:54     INFO - running 
[task 2020-12-06T10:59:01.007Z] 10:58:59     INFO - Buffered messages logged at 10:51:01
[task 2020-12-06T10:59:06.293Z] 10:59:05     INFO - Console message: [JavaScript Error: "TypeError: can't access property "docShell", this.contentWindow.top is null" {file: "resource:///actors/LightweightThemeChild.jsm" line: 38}]
[task 2020-12-06T10:59:08.712Z] 10:59:05     INFO - _getChromeOuterWindowID@resource:///actors/LightweightThemeChild.jsm:38:5
[task 2020-12-06T10:59:10.368Z] 10:59:06     INFO - handleEvent@resource:///actors/LightweightThemeChild.jsm:54:52
[task 2020-12-06T10:59:12.047Z] 10:59:07     INFO - 
[task 2020-12-06T10:59:14.382Z] 10:59:09     INFO - Buffered messages finished
[task 2020-12-06T10:59:16.853Z] 10:59:14    ERROR - TEST-UNEXPECTED-TIMEOUT | browser/components/sessionstore/test/browser_cleaner.js | application timed out after 370 seconds with no output
[task 2020-12-06T10:59:22.053Z] 10:59:20    ERROR - Force-terminating active process(es).
[task 2020-12-06T10:59:27.060Z] 10:59:26     INFO - Determining child pids from psutil...
[task 2020-12-06T10:59:50.141Z] 10:59:48     INFO - [1624, 1649, 1709, 1741, 1776, 1812, 1600]
[task 2020-12-06T10:59:57.791Z] 10:59:56     INFO - ==> process 1552 launched child process 1567
[task 2020-12-06T11:00:01.758Z] 11:00:00     INFO - ==> process 1552 launched child process 1624```