Bug: Intermittent browser/components/aboutwelcome/tests/browser/browser_aboutwelcome_multistage_experimentAPI.js | single tracking bug
Status: RESOLVED
Priority: P2
Resolution: FIXED
Created: 2024-01-18 03:53:16+00:00
Resolved: 2024-03-18 06:04:33+00:00

**Filed by:** nfay [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer?job_id=443721646&repo=autoland
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/JbIwN9Y8RraNK0xYLQZ0RQ/runs/0/artifacts/public/logs/live_backing.log

---
```
[task 2024-01-18T03:24:29.352Z] 03:24:29     INFO - TEST-START | browser/components/aboutwelcome/tests/browser/browser_aboutwelcome_multistage_experimentAPI.js
[task 2024-01-18T03:24:29.399Z] 03:24:29     INFO - GECKO(3820) | [Child 2536: Main Thread]: I/DocShellAndDOMWindowLeak ++DOCSHELL 1b397e7d400 == 13 [pid = 2536] [id = 50]
[task 2024-01-18T03:24:29.399Z] 03:24:29     INFO - GECKO(3820) | [Child 2536: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 29 (1b399ded020) [pid = 2536] [serial = 151] [outer = 0]
[task 2024-01-18T03:24:29.400Z] 03:24:29     INFO - GECKO(3820) | [Child 2536: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 30 (1b39902e800) [pid = 2536] [serial = 152] [outer = 1b399ded020]
[task 2024-01-18T03:24:29.431Z] 03:24:29     INFO - GECKO(3820) | [Child 2536: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 31 (1b39a011400) [pid = 2536] [serial = 153] [outer = 1b399ded020]
[task 2024-01-18T03:24:29.948Z] 03:24:29     INFO - GECKO(3820) | [Child 2536: Main Thread]: I/DocShellAndDOMWindowLeak ++DOCSHELL 1b39ace9c00 == 14 [pid = 2536] [id = 51]
[task 2024-01-18T03:24:29.949Z] 03:24:29     INFO - GECKO(3820) | [Child 2536: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 32 (1b399ded3e0) [pid = 2536] [serial = 154] [outer = 0]
[task 2024-01-18T03:24:29.949Z] 03:24:29     INFO - GECKO(3820) | [Child 2536: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 33 (1b39acea800) [pid = 2536] [serial = 155] [outer = 1b399ded3e0]
[task 2024-01-18T03:24:29.997Z] 03:24:29     INFO - GECKO(3820) | [Child 2536: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 34 (1b39acecc00) [pid = 2536] [serial = 156] [outer = 1b399ded3e0]
<...>
[task 2024-01-18T03:24:41.965Z] 03:24:41     INFO - TEST-PASS | browser/components/aboutwelcome/tests/browser/browser_aboutwelcome_multistage_experimentAPI.js | telemetry.event_counts['normandy#expose#nimbus_experiment'] must contain the expected value - 1 == 1 - 
[task 2024-01-18T03:24:41.965Z] 03:24:41     INFO - Leaving test bound test_multistage_aboutwelcome_experimentAPI
[task 2024-01-18T03:24:41.966Z] 03:24:41     INFO - Entering test bound test_multistage_aboutwelcome_transitions
[task 2024-01-18T03:24:41.966Z] 03:24:41     INFO - TEST-PASS | browser/components/aboutwelcome/tests/browser/browser_aboutwelcome_multistage_experimentAPI.js | Should not render div.proton.transition-out in multistage proton step 1 - true == true - 
[task 2024-01-18T03:24:41.967Z] 03:24:41     INFO - TEST-PASS | browser/components/aboutwelcome/tests/browser/browser_aboutwelcome_multistage_experimentAPI.js | Navigated to a welcome screen - "about:welcome" == "about:welcome" - 
[task 2024-01-18T03:24:41.967Z] 03:24:41     INFO - Buffered messages finished
[task 2024-01-18T03:24:41.968Z] 03:24:41     INFO - TEST-UNEXPECTED-FAIL | browser/components/aboutwelcome/tests/browser/browser_aboutwelcome_multistage_experimentAPI.js | Uncaught exception in test bound test_multistage_aboutwelcome_transitions - Should render div.proton.transition-out .screen in multistage proton step 1 transition to 2 - timed out after 50 tries.
[task 2024-01-18T03:24:41.968Z] 03:24:41     INFO - Leaving test bound test_multistage_aboutwelcome_transitions
[task 2024-01-18T03:24:41.969Z] 03:24:41     INFO - Entering test bound test_multistage_aboutwelcome_transitions_off
[task 2024-01-18T03:24:45.835Z] 03:24:45     INFO - GECKO(3820) | [Child 5824: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 0 (1f9e0f4b400) [pid = 5824] [serial = 18] [outer = 0] [url = about:blank]
[task 2024-01-18T03:25:30.815Z] 03:25:30     INFO - GECKO(3820) | [Parent 8664, Jump List #2] WARNING: NS_ENSURE_SUCCESS(rv, rv) failed with result 0x80520012 (NS_ERROR_FILE_NOT_FOUND): file /builds/worker/checkouts/gecko/widget/windows/WinUtils.cpp:950
[task 2024-01-18T03:25:30.820Z] 03:25:30     INFO - GECKO(3820) | [Parent 8664, Main Thread] WARNING: NS_ENSURE_SUCCESS(rv, rv) failed with result 0x80040111 (NS_ERROR_NOT_AVAILABLE): file /builds/worker/checkouts/gecko/widget/windows/JumpListBuilder.cpp:219
[task 2024-01-18T03:25:30.821Z] 03:25:30     INFO - GECKO(3820) | [Parent 8664, Main Thread] WARNING: NS_ENSURE_SUCCESS(rv, rv) failed with result 0x80040111 (NS_ERROR_NOT_AVAILABLE): file /builds/worker/checkouts/gecko/widget/windows/JumpListBuilder.cpp:219
[task 2024-01-18T03:25:30.821Z] 03:25:30     INFO - GECKO(3820) | [Parent 8664, Jump List #2] WARNING: NS_ENSURE_SUCCESS(rv, rv) failed with result 0x80520012 (NS_ERROR_FILE_NOT_FOUND): file /builds/worker/checkouts/gecko/widget/windows/WinUtils.cpp:950
[task 2024-01-18T03:26:00.697Z] 03:26:00     INFO - Not taking screenshot here: see the one that was previously logged
[task 2024-01-18T03:26:00.697Z] 03:26:00     INFO - TEST-UNEXPECTED-FAIL | browser/components/aboutwelcome/tests/browser/browser_aboutwelcome_multistage_experimentAPI.js | Test timed out - 
[task 2024-01-18T03:26:00.698Z] 03:26:00     INFO - GECKO(3820) | Completed ShutdownLeaks collections in process 8664
[task 2024-01-18T03:26:00.699Z] 03:26:00     INFO - TEST-START | Shutdown
[task 2024-01-18T03:26:00.699Z] 03:26:00     INFO - Browser Chrome Test Summary
[task 2024-01-18T03:26:00.700Z] 03:26:00     INFO - Passed:  218
[task 2024-01-18T03:26:00.700Z] 03:26:00     INFO - Failed:  2
[task 2024-01-18T03:26:00.701Z] 03:26:00     INFO - Todo:    0
[task 2024-01-18T03:26:00.702Z] 03:26:00     INFO - Mode:    e10s
[task 2024-01-18T03:26:00.702Z] 03:26:00     INFO - *** End BrowserChrome Test Results ***
```