Bug: Intermittent browser/base/content/test/favicons/browser_favicon_nostore.js | Uncaught exception - wait for the favicon to be stored - threw exception: TypeError: can't access property "spec", uri is null
Status: RESOLVED
Priority: P5
Resolution: FIXED
Created: 2020-10-22 11:16:21+00:00
Resolved: 2020-10-26 06:27:06+00:00

**Filed by:** rmaries [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer.html#?job_id=319350172&repo=autoland
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/IeUu8uw0SJW0eAlqaInH-g/runs/0/artifacts/public/logs/live_backing.log
**Reftest URL:** https://hg.mozilla.org/mozilla-central/raw-file/tip/layout/tools/reftest/reftest-analyzer.xhtml#logurl=https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/IeUu8uw0SJW0eAlqaInH-g/runs/0/artifacts/public/logs/live_backing.log&only_show_unexpected=1

---
```
[task 2020-10-22T10:42:45.607Z] 10:42:45     INFO - TEST-START | browser/base/content/test/favicons/browser_favicon_nostore.js
[task 2020-10-22T10:42:50.715Z] 10:42:50     INFO - TEST-INFO | started process screentopng
[task 2020-10-22T10:42:50.884Z] 10:42:50     INFO - TEST-INFO | screentopng: exit 0
[task 2020-10-22T10:42:50.884Z] 10:42:50     INFO - Buffered messages logged at 10:42:45
[task 2020-10-22T10:42:50.884Z] 10:42:50     INFO - Entering test bound browser_loader
[task 2020-10-22T10:42:50.884Z] 10:42:50     INFO - Buffered messages logged at 10:42:46
[task 2020-10-22T10:42:50.884Z] 10:42:50     INFO - TEST-PASS | browser/base/content/test/favicons/browser_favicon_nostore.js | Should have seen the expected icon. - 
[task 2020-10-22T10:42:50.884Z] 10:42:50     INFO - Console message: [JavaScript Error: "Unknown Collection "main/partitioning-exempt-urls"" {file: "resource://services-settings/RemoteSettingsClient.jsm" line: 160}]
[task 2020-10-22T10:42:50.885Z] 10:42:50     INFO - UnknownCollectionError@resource://services-settings/RemoteSettingsClient.jsm:160:5
[task 2020-10-22T10:42:50.885Z] 10:42:50     INFO - sync@resource://services-settings/RemoteSettingsClient.jsm:470:13
[task 2020-10-22T10:42:50.885Z] 10:42:50     INFO - 
[task 2020-10-22T10:42:50.885Z] 10:42:50     INFO - Buffered messages logged at 10:42:47
[task 2020-10-22T10:42:50.886Z] 10:42:50     INFO - Leaving test bound browser_loader
[task 2020-10-22T10:42:50.886Z] 10:42:50     INFO - Entering test bound places_loader
[task 2020-10-22T10:42:50.887Z] 10:42:50     INFO - Buffered messages logged at 10:42:48
[task 2020-10-22T10:42:50.887Z] 10:42:50     INFO - Leaving test bound places_loader
[task 2020-10-22T10:42:50.887Z] 10:42:50     INFO - Entering test bound later_addition
[task 2020-10-22T10:42:50.887Z] 10:42:50     INFO - Buffered messages logged at 10:42:49
[task 2020-10-22T10:42:50.889Z] 10:42:50     INFO - TEST-PASS | browser/base/content/test/favicons/browser_favicon_nostore.js | Should have seen the expected icon. - 
[task 2020-10-22T10:42:50.889Z] 10:42:50     INFO - Buffered messages logged at 10:42:50
[task 2020-10-22T10:42:50.889Z] 10:42:50     INFO - Leaving test bound later_addition
[task 2020-10-22T10:42:50.889Z] 10:42:50     INFO - Entering test bound root_icon_stored
[task 2020-10-22T10:42:50.889Z] 10:42:50     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://www.nostore.com/page" line: 0}]
[task 2020-10-22T10:42:50.890Z] 10:42:50     INFO - Buffered messages finished
[task 2020-10-22T10:42:50.890Z] 10:42:50     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/favicons/browser_favicon_nostore.js | Uncaught exception - wait for the favicon to be stored - threw exception: TypeError: can't access property "spec", uri is null
[task 2020-10-22T10:42:50.890Z] 10:42:50     INFO - Leaving test bound root_icon_stored
[task 2020-10-22T10:42:50.925Z] 10:42:50     INFO - GECKO(4276) | MEMORY STAT vsizeMaxContiguous not supported in this build configuration.
[task 2020-10-22T10:42:50.925Z] 10:42:50     INFO - GECKO(4276) | MEMORY STAT | vsize 2831MB | residentFast 311MB | heapAllocated 106MB
[task 2020-10-22T10:42:50.926Z] 10:42:50     INFO - TEST-OK | browser/base/content/test/favicons/browser_favicon_nostore.js | took 5309ms
[task 2020-10-22T10:42:50.927Z] 10:42:50     INFO - Not taking screenshot here: see the one that was previously logged
[task 2020-10-22T10:42:50.927Z] 10:42:50     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/favicons/browser_favicon_nostore.js | Found an unexpected tab at the end of test run: http://www.nostore.com/page - 
[task 2020-10-22T10:42:50.955Z] 10:42:50     INFO - checking window state```