Bug: Intermittent browser/components/privatebrowsing/test/browser/browser_privatebrowsing_favicon.js | single tracking bug
Status: RESOLVED
Priority: P5
Resolution: INCOMPLETE
Created: 2023-07-05 11:24:40+00:00
Resolved: 2023-10-25 12:02:31+00:00

**Filed by:** imoraru [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer?job_id=421542540&repo=mozilla-central
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/Evp8D_bTRg6HkmzeYeoNhQ/runs/0/artifacts/public/logs/live_backing.log

---
```
[task 2023-07-05T10:24:13.179Z] 10:24:13     INFO - TEST-START | browser/components/privatebrowsing/test/browser/browser_privatebrowsing_favicon.js
[task 2023-07-05T10:24:14.413Z] 10:24:14     INFO - GECKO(3494) | 1688552654412	Marionette	TRACE	Received observer notification browser-delayed-startup-finished
[task 2023-07-05T10:26:16.998Z] 10:26:16     INFO - TEST-INFO | started process screentopng
[task 2023-07-05T10:26:17.199Z] 10:26:17     INFO - TEST-INFO | screentopng: exit 0
[task 2023-07-05T10:26:17.200Z] 10:26:17     INFO - Buffered messages logged at 10:24:13
[task 2023-07-05T10:26:17.200Z] 10:26:17     INFO - Entering test bound test_favicon_privateBrowsing
[task 2023-07-05T10:26:17.201Z] 10:26:17     INFO - Buffered messages logged at 10:24:15
[task 2023-07-05T10:26:17.202Z] 10:26:17     INFO - Console message: [JavaScript Warning: "This page is in Quirks Mode. Page layout may be impacted. For Standards Mode use “<!DOCTYPE html>”." {file: "https://example.com/" line: 0}]
[task 2023-07-05T10:26:17.202Z] 10:26:17     INFO - Buffered messages logged at 10:24:16
[task 2023-07-05T10:26:17.204Z] 10:26:17     INFO - Console message: [JavaScript Warning: "Cookie “” does not have a proper “SameSite” attribute value. Soon, cookies without the “SameSite” attribute or with an invalid value will be treated as “Lax”. This means that the cookie will no longer be sent in third-party contexts. If your application depends on this cookie being available in such contexts, please add the “SameSite=None“ attribute to it. To know more about the “SameSite“ attribute, read https://developer.mozilla.org/docs/Web/HTTP/Headers/Set-Cookie/SameSite" {file: "chrome://mochitests/content/browser/browser/components/privatebrowsing/test/browser/browser_privatebrowsing_favicon.js" line: 170}]
[task 2023-07-05T10:26:17.205Z] 10:26:17     INFO - Buffered messages logged at 10:24:17
[task 2023-07-05T10:26:17.207Z] 10:26:17     INFO - Console message: [JavaScript Warning: "This page is in Quirks Mode. Page layout may be impacted. For Standards Mode use “<!DOCTYPE html>”." {file: "https://example.com/" line: 0}]
[task 2023-07-05T10:26:17.207Z] 10:26:17     INFO - Buffered messages logged at 10:24:18
[task 2023-07-05T10:26:17.208Z] 10:26:17     INFO - Console message: [JavaScript Warning: "Cookie “” does not have a proper “SameSite” attribute value. Soon, cookies without the “SameSite” attribute or with an invalid value will be treated as “Lax”. This means that the cookie will no longer be sent in third-party contexts. If your application depends on this cookie being available in such contexts, please add the “SameSite=None“ attribute to it. To know more about the “SameSite“ attribute, read https://developer.mozilla.org/docs/Web/HTTP/Headers/Set-Cookie/SameSite" {file: "chrome://mochitests/content/browser/browser/components/privatebrowsing/test/browser/browser_privatebrowsing_favicon.js" line: 170}]
[task 2023-07-05T10:26:17.209Z] 10:26:17     INFO - Buffered messages finished
[task 2023-07-05T10:26:17.210Z] 10:26:17     INFO - TEST-UNEXPECTED-FAIL | browser/components/privatebrowsing/test/browser/browser_privatebrowsing_favicon.js | Test timed out - 
[task 2023-07-05T10:26:17.537Z] 10:26:17     INFO - GECKO(3494) | MEMORY STAT | vsize 130552190MB | residentFast 2055MB
[task 2023-07-05T10:26:17.539Z] 10:26:17     INFO - TEST-OK | browser/components/privatebrowsing/test/browser/browser_privatebrowsing_favicon.js | took 124359ms
[task 2023-07-05T10:26:17.636Z] 10:26:17     INFO - checking window state
[task 2023-07-05T10:26:17.638Z] 10:26:17     INFO - Not taking screenshot here: see the one that was previously logged
[task 2023-07-05T10:26:17.640Z] 10:26:17     INFO - TEST-UNEXPECTED-FAIL | browser/components/privatebrowsing/test/browser/browser_privatebrowsing_favicon.js | Found a browser window after previous test timed out - 
[task 2023-07-05T10:26:17.641Z] 10:26:17     INFO - GECKO(3494) | must wait for focus
[task 2023-07-05T10:26:17.927Z] 10:26:17     INFO - Not taking screenshot here: see the one that was previously logged
[task 2023-07-05T10:26:17.927Z] 10:26:17     INFO - TEST-UNEXPECTED-FAIL | browser/components/privatebrowsing/test/browser/browser_privatebrowsing_favicon.js | Uncaught exception received from previously timed out test bound test_favicon_privateBrowsing - at resource://testing-common/BrowserTestUtils.sys.mjs:519 - Error: The window unloaded while we were waiting for the browser to load - this should never happen.
[task 2023-07-05T10:26:17.927Z] 10:26:17     INFO - Stack trace:
[task 2023-07-05T10:26:17.927Z] 10:26:17     INFO - listener@resource://testing-common/BrowserTestUtils.sys.mjs:519:15
[task 2023-07-05T10:26:17.928Z] 10:26:17     INFO - EventListener.handleEvent*browserLoaded/<@resource://testing-common/BrowserTestUtils.sys.mjs:534:27
[task 2023-07-05T10:26:17.928Z] 10:26:17     INFO - browserLoaded@resource://testing-common/BrowserTestUtils.sys.mjs:484:12
[task 2023-07-05T10:26:17.928Z] 10:26:17     INFO - openTab@chrome://mochitests/content/browser/browser/components/privatebrowsing/test/browser/browser_privatebrowsing_favicon.js:184:26
[task 2023-07-05T10:26:17.928Z] 10:26:17     INFO - test_favicon_privateBrowsing@chrome://mochitests/content/browser/browser/components/privatebrowsing/test/browser/browser_privatebrowsing_favicon.js:230:23
[task 2023-07-05T10:26:17.928Z] 10:26:17     INFO - async*handleTask@chrome://mochikit/content/browser-test.js:1131:26
[task 2023-07-05T10:26:17.928Z] 10:26:17     INFO - _runTaskBasedTest@chrome://mochikit/content/browser-test.js:1203:18
[task 2023-07-05T10:26:17.928Z] 10:26:17     INFO - Tester_execTest@chrome://mochikit/content/browser-test.js:1345:14
[task 2023-07-05T10:26:17.928Z] 10:26:17     INFO - nextTest/<@chrome://mochikit/content/browser-test.js:1120:14
[task 2023-07-05T10:26:17.928Z] 10:26:17     INFO - SimpleTest.waitForFocus/<@chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:1056:13
[task 2023-07-05T10:26:17.996Z] 10:26:17     INFO - TEST-START | browser/components/privatebrowsing/test/browser/browser_privatebrowsing_history_shift_click.js
```