Bug: Intermittent browser/components/urlbar/tests/browser/browser_new_tab_urlbar_reset.js | single tracking bug
Status: RESOLVED
Priority: P5
Resolution: INCOMPLETE
Created: 2022-09-22 19:42:03+00:00
Resolved: 2022-10-18 17:04:58+00:00

**Filed by:** ctuns [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer?job_id=391196108&repo=mozilla-central
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/K9pGRevRRH6pAdpxoVHqug/runs/0/artifacts/public/logs/live_backing.log

---
```
[task 2022-09-22T17:53:07.579Z] 17:53:07     INFO - TEST-START | browser/components/urlbar/tests/browser/browser_new_tab_urlbar_reset.js
[task 2022-09-22T17:53:52.620Z] 17:53:52     INFO - TEST-INFO | started process screentopng
[task 2022-09-22T17:53:52.855Z] 17:53:52     INFO - TEST-INFO | screentopng: exit 0
[task 2022-09-22T17:53:52.856Z] 17:53:52     INFO - Buffered messages logged at 17:53:07
[task 2022-09-22T17:53:52.856Z] 17:53:52     INFO - Entering test bound 
[task 2022-09-22T17:53:52.857Z] 17:53:52     INFO - Buffered messages finished
[task 2022-09-22T17:53:52.858Z] 17:53:52     INFO - TEST-UNEXPECTED-FAIL | browser/components/urlbar/tests/browser/browser_new_tab_urlbar_reset.js | Test timed out - 
[task 2022-09-22T17:53:52.860Z] 17:53:52     INFO - GECKO(14374) | MEMORY STAT | vsize 3833MB | residentFast 455MB | heapAllocated 295MB
[task 2022-09-22T17:53:52.861Z] 17:53:52     INFO - TEST-OK | browser/components/urlbar/tests/browser/browser_new_tab_urlbar_reset.js | took 45049ms
[task 2022-09-22T17:53:52.861Z] 17:53:52     INFO - Not taking screenshot here: see the one that was previously logged
[task 2022-09-22T17:53:52.862Z] 17:53:52     INFO - TEST-UNEXPECTED-FAIL | browser/components/urlbar/tests/browser/browser_new_tab_urlbar_reset.js | Found a tab after previous test timed out: about:blank - 
[task 2022-09-22T17:53:52.864Z] 17:53:52     INFO - checking window state
[task 2022-09-22T17:53:52.865Z] 17:53:52     INFO - TEST-START | browser/components/urlbar/tests/browser/browser_oneOffs.js
[task 2022-09-22T17:53:52.866Z] 17:53:52     INFO - Not taking screenshot here: see the one that was previously logged
[task 2022-09-22T17:53:52.866Z] 17:53:52     INFO - Buffered messages logged at 17:53:52
[task 2022-09-22T17:53:52.866Z] 17:53:52     INFO - Entering test bound init
[task 2022-09-22T17:53:52.866Z] 17:53:52     INFO - Buffered messages finished
[task 2022-09-22T17:53:52.866Z] 17:53:52     INFO - TEST-UNEXPECTED-FAIL | browser/components/urlbar/tests/browser/browser_new_tab_urlbar_reset.js | Uncaught exception received from previously timed out test - at chrome://mochitests/content/browser/browser/components/urlbar/tests/browser/browser_new_tab_urlbar_reset.js:16 - ReferenceError: UrlbarTestUtils is not defined
[task 2022-09-22T17:53:52.866Z] 17:53:52     INFO - Stack trace:
[task 2022-09-22T17:53:52.866Z] 17:53:52     INFO - @chrome://mochitests/content/browser/browser/components/urlbar/tests/browser/browser_new_tab_urlbar_reset.js:16:3
[task 2022-09-22T17:53:52.866Z] 17:53:52     INFO - GECKO(14374) | JavaScript error: chrome://mochikit/content/browser-test.js, line 1108: TypeError: can't access property "shift", currentScope.__tasks is null
[task 2022-09-22T17:53:52.866Z] 17:53:52     INFO - Console message: [JavaScript Error: "TypeError: can't access property "shift", currentScope.__tasks is null" {file: "chrome://mochikit/content/browser-test.js" line: 1108}]
[task 2022-09-22T17:53:53.536Z] 17:53:53     INFO - Not taking screenshot here: see the one that was previously logged
[task 2022-09-22T17:53:53.538Z] 17:53:53     INFO - TEST-UNEXPECTED-FAIL | browser/components/urlbar/tests/browser/browser_oneOffs.js | A promise chain failed to handle a rejection: can't access property "shift", currentScope.__tasks is null - stack: _runTaskBasedTest@chrome://mochikit/content/browser-test.js:1108:13
[task 2022-09-22T17:53:53.538Z] 17:53:53     INFO - Rejection date: Thu Sep 22 2022 17:53:52 GMT+0000 (Coordinated Universal Time) - false == true - JS frame :: resource://testing-common/PromiseTestUtils.jsm :: assertNoUncaughtRejections :: line 270
[task 2022-09-22T17:53:53.538Z] 17:53:53     INFO - Stack trace:
[task 2022-09-22T17:53:53.539Z] 17:53:53     INFO - resource://testing-common/PromiseTestUtils.jsm:assertNoUncaughtRejections:270
[task 2022-09-22T17:53:53.539Z] 17:53:53     INFO - chrome://mochikit/content/browser-test.js:handleTask:1073
[task 2022-09-22T17:53:53.539Z] 17:53:53     INFO - Leaving test bound init
[task 2022-09-22T17:53:53.539Z] 17:53:53     INFO - Entering test bound noOneOffs
[task 2022-09-22T17:53:53.544Z] 17:53:53     INFO - Awaiting for the urlbar panel to open
[task 2022-09-22T17:53:53.556Z] 17:53:53     INFO - Urlbar panel opened
[task 2022-09-22T17:53:53.562Z] 17:53:53     INFO - TEST-PASS | browser/components/urlbar/tests/browser/browser_oneOffs.js | One-offs should be hidden - false == false - 
```