Bug: Intermittent toolkit/components/thumbnails/test/browser_thumbnails_bug818225.js | Uncaught exception - Waiting for http://mochi.test:8888/browser/toolkit/components/thumbnails/test/background_red.html?1578960531540 to exist. - timed out after 50 tries.
Status: RESOLVED
Priority: P5
Resolution: DUPLICATE
Created: 2020-01-14 00:19:50+00:00
Resolved: 2022-07-25 23:13:58+00:00

**Filed by:** rmaries [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer.html#?job_id=284768728&repo=autoland
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/KeRkcQEeSr6WW9peYLadqQ/runs/0/artifacts/public/logs/live_backing.log

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[task 2020-01-14T00:08:51.540Z] 00:08:51     INFO - TEST-START | toolkit/components/thumbnails/test/browser_thumbnails_bug818225.js
[task 2020-01-14T00:09:45.677Z] 00:09:45     INFO - TEST-PASS | toolkit/components/thumbnails/test/browser_thumbnails_bug818225.js | Thumbnail file does not exist - 
[task 2020-01-14T00:09:45.677Z] 00:09:45     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/toolkit/components/thumbnails/test/background_red.html?1578960531540" line: 0}]
[task 2020-01-14T00:09:45.677Z] 00:09:45     INFO - Buffered messages finished
[task 2020-01-14T00:09:45.678Z] 00:09:45     INFO - TEST-UNEXPECTED-FAIL | toolkit/components/thumbnails/test/browser_thumbnails_bug818225.js | Uncaught exception - Waiting for http://mochi.test:8888/browser/toolkit/components/thumbnails/test/background_red.html?1578960531540 to exist. - timed out after 50 tries.
[task 2020-01-14T00:09:45.678Z] 00:09:45     INFO - Leaving test bound thumbnails_bg_bug818225
[task 2020-01-14T00:09:45.723Z] 00:09:45     INFO - GECKO(2140) | MEMORY STAT | vsize 2104202MB | vsizeMaxContiguous 65789029MB | residentFast 273MB | heapAllocated 90MB
[task 2020-01-14T00:09:45.723Z] 00:09:45     INFO - TEST-OK | toolkit/components/thumbnails/test/browser_thumbnails_bug818225.js | took 54184ms
[task 2020-01-14T00:09:45.733Z] 00:09:45     INFO - GECKO(2140) | [Child 7288: Main Thread]: I/DocShellAndDOMWindowLeak ++DOCSHELL 0000025735B4F800 == 2 [pid = 7288] [id = {a10e606b-0eb8-4177-8312-3c67d68e1802}]
[task 2020-01-14T00:09:45.733Z] 00:09:45     INFO - GECKO(2140) | [Child 7288: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 3 (000002573BD425C0) [pid = 7288] [serial = 28] [outer = 0000000000000000]
[task 2020-01-14T00:09:45.733Z] 00:09:45     INFO - GECKO(2140) | [Child 7288, Main Thread] WARNING: NS_ENSURE_TRUE(mPresShell) failed: file z:/build/build/src/layout/base/nsPresContext.cpp, line 848
[task 2020-01-14T00:09:45.733Z] 00:09:45     INFO - GECKO(2140) | [Child 7288: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 4 (0000025735BCC400) [pid = 7288] [serial = 29] [outer = 000002573BD425C0]
[task 2020-01-14T00:09:45.752Z] 00:09:45     INFO - GECKO(2140) | [Child 7288: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 5 (000002573C11C800) [pid = 7288] [serial = 30] [outer = 000002573BD425C0]
[task 2020-01-14T00:09:45.761Z] 00:09:45     INFO - checking window state