Bug: Intermittent browser/base/content/test/tabs/browser_e10s_switchbrowser.js | Found a tab after previous test timed out: about:blank -
Status: RESOLVED
Priority: P5
Resolution: INCOMPLETE
Created: 2021-03-13 12:41:13+00:00
Resolved: 2023-07-05 12:03:47+00:00

**Filed by:** nbeleuzu [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer?job_id=333103968&repo=autoland
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/IXO42CMVTc6aj4Nuo-u6rQ/runs/0/artifacts/public/logs/live_backing.log

---
```
[task 2021-03-13T11:17:36.516Z] 11:17:36     INFO - TEST-PASS | browser/base/content/test/tabs/browser_e10s_switchbrowser.js | Should have the right title - 
[task 2021-03-13T11:17:36.517Z] 11:17:36     INFO - 4
[task 2021-03-13T11:17:36.517Z] 11:17:36     INFO - Loading http://example.org/browser/browser/base/content/test/general/dummy_page.html
[task 2021-03-13T11:17:36.518Z] 11:17:36     INFO - Console message: [JavaScript Error: "remote browser crashed while on about:blank
[task 2021-03-13T11:17:36.518Z] 11:17:36     INFO - " {file: "chrome://mochikit/content/mochitest-e10s-utils.js" line: 10}]
[task 2021-03-13T11:17:36.518Z] 11:17:36     INFO - e10s_init/<@chrome://mochikit/content/mochitest-e10s-utils.js:10:10
[task 2021-03-13T11:17:36.518Z] 11:17:36     INFO - 
[task 2021-03-13T11:17:36.520Z] 11:17:36     INFO - Buffered messages logged at 11:16:06
[task 2021-03-13T11:17:36.520Z] 11:17:36     INFO - Longer timeout required, waiting longer...  Remaining timeouts: 1
[task 2021-03-13T11:17:36.520Z] 11:17:36     INFO - Buffered messages finished
[task 2021-03-13T11:17:36.521Z] 11:17:36     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/tabs/browser_e10s_switchbrowser.js | Test timed out - 
[task 2021-03-13T11:17:36.521Z] 11:17:36     INFO - GECKO(4637) | MEMORY STAT | vsize 3442MB | residentFast 352MB | heapAllocated 109MB
[task 2021-03-13T11:17:36.521Z] 11:17:36     INFO - TEST-OK | browser/base/content/test/tabs/browser_e10s_switchbrowser.js | took 180019ms
[task 2021-03-13T11:17:36.527Z] 11:17:36     INFO - Not taking screenshot here: see the one that was previously logged
[task 2021-03-13T11:17:36.527Z] 11:17:36     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/tabs/browser_e10s_switchbrowser.js | Found a tab after previous test timed out: about:blank - 
[task 2021-03-13T11:17:36.528Z] 11:17:36     INFO - GECKO(4637) | [Parent 4637, Main Thread] WARNING: '!inner', file /builds/worker/checkouts/gecko/dom/ipc/jsactor/JSWindowActorProtocol.cpp:181
[task 2021-03-13T11:17:36.528Z] 11:17:36     INFO - GECKO(4637) | [Child 4692: Main Thread]: I/DocShellAndDOMWindowLeak ++DOCSHELL 7f2efa503400 == 1 [pid = 4692] [id = 14]
[task 2021-03-13T11:17:36.528Z] 11:17:36     INFO - GECKO(4637) | [Child 4692: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 1 (7f2f18163ac0) [pid = 4692] [serial = 36] [outer = 0]
[task 2021-03-13T11:17:36.529Z] 11:17:36     INFO - GECKO(4637) | [Child 4692: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 2 (7f2efa503800) [pid = 4692] [serial = 37] [outer = 7f2f18163ac0]
[task 2021-03-13T11:17:36.529Z] 11:17:36     INFO - checking window state
[task 2021-03-13T11:17:36.529Z] 11:17:36     INFO - GECKO(4637) | Saw state f0001 and status 0
[task 2021-03-13T11:17:36.530Z] 11:17:36     INFO - GECKO(4637) | Saw state c0010 and status 804b0002```