Bug: Intermittent browser/components/newtab/test/browser/browser_aboutwelcome_screen_targeting.js | single tracking bug
Status: RESOLVED
Priority: P5
Resolution: INCOMPLETE
Created: 2023-09-04 15:27:14+00:00
Resolved: 2025-02-10 12:04:53+00:00

**Filed by:** nbeleuzu [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer?job_id=427921526&repo=autoland
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/KNihumH0Ts2dnBFx8l2axw/runs/0/artifacts/public/logs/live_backing.log

---
```
[task 2023-09-04T14:12:07.497Z] 14:12:07     INFO - TEST-PASS | browser/components/newtab/test/browser/browser_aboutwelcome_screen_targeting.js | Navigated to a welcome screen - "about:welcome" == "about:welcome" - 
[task 2023-09-04T14:12:07.498Z] 14:12:07     INFO - Leaving test bound test_aboutwelcome_mr_template_easy_setup
[task 2023-09-04T14:12:07.498Z] 14:12:07     INFO - Buffered messages finished
[task 2023-09-04T14:12:07.501Z] 14:12:07     INFO - TEST-UNEXPECTED-FAIL | browser/components/newtab/test/browser/browser_aboutwelcome_screen_targeting.js | waiting for vsync to be disabled - timed out after 50 tries. - false == true - {"filename":"chrome://mochikit/content/browser-test.js","name":"ensureVsyncDisabled","sourceId":551,"lineNumber":603,"columnNumber":19,"sourceLine":"","asyncCause":null,"asyncCaller":{"filename":"chrome://mochikit/content/browser-test.js","name":"nextTest","sourceId":551,"lineNumber":768,"columnNumber":18,"sourceLine":"","asyncCause":null,"asyncCaller":{"filename":"chrome://mochikit/content/browser-test.js","name":"testScope/test_finish/<","sourceId":551,"lineNumber":1794,"columnNumber":25,"sourceLine":"","asyncCause":null,"asyncCaller":null,"caller":{"filename":"chrome://mochikit/content/browser-test.js","name":"run","sourceId":551,"lineNumber":1714,"columnNumber":9,"sourceLine":"","asyncCause":null,"asyncCaller":null,"caller":null,"formattedStack":"run@chrome://mochikit/content/browser-test.js:1714:9\n","nativeSavedFrame":{}},"formattedStack":"async*testScope/test_finish/<@chrome://mochikit/content/browser-test.js:1794:25\nrun@chrome://mochikit/content/browser-test.js:1714:9\n","nativeSavedFrame":{}},"caller":null,"formattedStack":"async*nextTest@chrome://mochikit/content/browser-test.js:768:18\nasync*testScope/test_finish/<@chrome://mochikit/content/browser-test.js:1794:25\nrun@chrome://mochikit/content/browser-test.js:1714:9\n","nativeSavedFrame":{}},"caller":null,"formattedStack":"ensureVsyncDisabled@chrome://mochikit/content/browser-test.js:603:19\nasync*nextTest@chrome://mochikit/content/browser-test.js:768:18\nasync*testScope/test_finish/<@chrome://mochikit/content/browser-test.js:1794:25\nrun@chrome://mochikit/content/browser-test.js:1714:9\n","nativeSavedFrame":{}}
[task 2023-09-04T14:12:07.502Z] 14:12:07     INFO - Stack trace:
[task 2023-09-04T14:12:07.502Z] 14:12:07     INFO - chrome://mochikit/content/browser-test.js:ensureVsyncDisabled:603
[task 2023-09-04T14:12:07.502Z] 14:12:07     INFO - chrome://mochikit/content/browser-test.js:nextTest:768
[task 2023-09-04T14:12:07.502Z] 14:12:07     INFO - chrome://mochikit/content/browser-test.js:testScope/test_finish/<:1794
[task 2023-09-04T14:12:07.502Z] 14:12:07     INFO - chrome://mochikit/content/browser-test.js:run:1714
[task 2023-09-04T14:12:07.502Z] 14:12:07     INFO - Not taking screenshot here: see the one that was previously logged
[task 2023-09-04T14:12:07.505Z] 14:12:07     INFO - TEST-UNEXPECTED-FAIL | browser/components/newtab/test/browser/browser_aboutwelcome_screen_targeting.js | vsync remained enabled at the end of the test. Is there an animation still running? Consider talking to the performance team for tips to solve this. - false == true - {"filename":"chrome://mochikit/content/browser-test.js","name":"ensureVsyncDisabled","sourceId":551,"lineNumber":604,"columnNumber":19,"sourceLine":"","asyncCause":null,"asyncCaller":{"filename":"chrome://mochikit/content/browser-test.js","name":"nextTest","sourceId":551,"lineNumber":768,"columnNumber":18,"sourceLine":"","asyncCause":null,"asyncCaller":{"filename":"chrome://mochikit/content/browser-test.js","name":"testScope/test_finish/<","sourceId":551,"lineNumber":1794,"columnNumber":25,"sourceLine":"","asyncCause":null,"asyncCaller":null,"caller":{"filename":"chrome://mochikit/content/browser-test.js","name":"run","sourceId":551,"lineNumber":1714,"columnNumber":9,"sourceLine":"","asyncCause":null,"asyncCaller":null,"caller":null,"formattedStack":"run@chrome://mochikit/content/browser-test.js:1714:9\n","nativeSavedFrame":{}},"formattedStack":"async*testScope/test_finish/<@chrome://mochikit/content/browser-test.js:1794:25\nrun@chrome://mochikit/content/browser-test.js:1714:9\n","nativeSavedFrame":{}},"caller":null,"formattedStack":"async*nextTest@chrome://mochikit/content/browser-test.js:768:18\nasync*testScope/test_finish/<@chrome://mochikit/content/browser-test.js:1794:25\nrun@chrome://mochikit/content/browser-test.js:1714:9\n","nativeSavedFrame":{}},"caller":null,"formattedStack":"ensureVsyncDisabled@chrome://mochikit/content/browser-test.js:604:19\nasync*nextTest@chrome://mochikit/content/browser-test.js:768:18\nasync*testScope/test_finish/<@chrome://mochikit/content/browser-test.js:1794:25\nrun@chrome://mochikit/content/browser-test.js:1714:9\n","nativeSavedFrame":{}}
[task 2023-09-04T14:12:07.505Z] 14:12:07     INFO - Stack trace:
[task 2023-09-04T14:12:07.505Z] 14:12:07     INFO - chrome://mochikit/content/browser-test.js:ensureVsyncDisabled:604
[task 2023-09-04T14:12:07.505Z] 14:12:07     INFO - chrome://mochikit/content/browser-test.js:nextTest:768
[task 2023-09-04T14:12:07.505Z] 14:12:07     INFO - chrome://mochikit/content/browser-test.js:testScope/test_finish/<:1794
[task 2023-09-04T14:12:07.505Z] 14:12:07     INFO - chrome://mochikit/content/browser-test.js:run:1714
[task 2023-09-04T14:12:07.506Z] 14:12:07     INFO - GECKO(7592) | MEMORY STAT | vsize 2112533MB | vsizeMaxContiguous 69074246MB | residentFast 345MB | heapAllocated 155MB
[task 2023-09-04T14:12:07.506Z] 14:12:07     INFO - TEST-OK | browser/components/newtab/test/browser/browser_aboutwelcome_screen_targeting.js | took 7698ms
```