Filed by: imoraru [at] mozilla.com
Parsed log: https://treeherder.mozilla.org/logviewer?job_id=348446596&repo=mozilla-central
Full log: https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/Cm6drAkuR9OhzXqJsmS-fg/runs/0/artifacts/public/logs/live_backing.log

[task 2021-08-14T22:10:40.957Z] 22:10:40     INFO - TEST-START | gfx/layers/apz/test/mochitest/test_group_wheelevents.html
[task 2021-08-14T22:10:41.214Z] 22:10:41     INFO - GECKO(6472) | WaitUntilApzStable: flushed APZ repaints in parent proc, waiting for callback...
[task 2021-08-14T22:10:41.214Z] 22:10:41     INFO - GECKO(6472) | WaitUntilApzStable: APZ flush done in parent proc
[task 2021-08-14T22:10:41.217Z] 22:10:41     INFO - GECKO(6472) | helper_scroll_on_position_fixed.html | WaitUntilApzStable: got apz-flush-done in child proc
[task 2021-08-14T22:10:41.230Z] 22:10:41     INFO - GECKO(6472) | helper_scroll_on_position_fixed.html | WaitUntilApzStable: done promiseFocus
[task 2021-08-14T22:10:41.236Z] 22:10:41     INFO - GECKO(6472) | helper_scroll_on_position_fixed.html | waiting for paint...
[task 2021-08-14T22:10:41.280Z] 22:10:41     INFO - GECKO(6472) | helper_scroll_on_position_fixed.html | got MozAfterPaint: 0,0,0,0
[task 2021-08-14T22:10:41.280Z] 22:10:41     INFO - GECKO(6472) | helper_scroll_on_position_fixed.html | Dispatching 1 onpaint listeners
[task 2021-08-14T22:10:41.280Z] 22:10:41     INFO - GECKO(6472) | helper_scroll_on_position_fixed.html | got MozAfterPaint: 0,0,0,0
[task 2021-08-14T22:10:41.281Z] 22:10:41     INFO - GECKO(6472) | helper_scroll_on_position_fixed.html | Dispatching 0 onpaint listeners
[task 2021-08-14T22:10:41.282Z] 22:10:41     INFO - GECKO(6472) | helper_scroll_on_position_fixed.html | done...
[task 2021-08-14T22:10:41.282Z] 22:10:41     INFO - GECKO(6472) | helper_scroll_on_position_fixed.html | WaitUntilApzStable: done promiseAllPaintsDone
<...>
[task 2021-08-14T22:15:57.663Z] 22:15:57     INFO - TEST-PASS | gfx/layers/apz/test/mochitest/test_group_wheelevents.html | Starting subtest helper_scroll_inactive_zindex.html 
[task 2021-08-14T22:15:57.663Z] 22:15:57     INFO - Buffered messages logged at 22:10:44
[task 2021-08-14T22:15:57.664Z] 22:15:57     INFO - TEST-PASS | gfx/layers/apz/test/mochitest/test_group_wheelevents.html | helper_scroll_inactive_zindex.html | subframe scrolled after wheeling over it 
[task 2021-08-14T22:15:57.664Z] 22:15:57     INFO - must wait for focus
[task 2021-08-14T22:15:57.664Z] 22:15:57     INFO - TEST-PASS | gfx/layers/apz/test/mochitest/test_group_wheelevents.html | Starting subtest helper_scroll_over_scrollbar.html 
[task 2021-08-14T22:15:57.665Z] 22:15:57     INFO - Buffered messages finished
[task 2021-08-14T22:15:57.665Z] 22:15:57     INFO - TEST-UNEXPECTED-FAIL | gfx/layers/apz/test/mochitest/test_group_wheelevents.html | Test timed out. - 
[task 2021-08-14T22:15:58.602Z] 22:15:58     INFO - GECKO(6472) | MEMORY STAT | vsize 2103846MB | vsizeMaxContiguous 66894123MB | residentFast 112MB | heapAllocated 8MB
[task 2021-08-14T22:15:59.567Z] 22:15:59     INFO - GECKO(6472) | helper_scroll_over_scrollbar.html | got MozAfterPaint: 0,0,0,0
[task 2021-08-14T22:15:59.572Z] 22:15:59     INFO - GECKO(6472) | helper_scroll_over_scrollbar.html | Dispatching 0 onpaint listeners
[task 2021-08-14T22:15:59.631Z] 22:15:59     INFO - TEST-OK | gfx/layers/apz/test/mochitest/test_group_wheelevents.html | took 318677ms
[task 2021-08-14T22:16:02.663Z] 22:16:02     INFO - Error: Unable to restore focus, expect failures and timeouts.
[task 2021-08-14T22:16:02.692Z] 22:16:02     INFO - TEST-START | gfx/layers/apz/test/mochitest/test_group_zoomToFocusedInput.html

https://wiki.mozilla.org/Bug_Triage#Intermittent_Test_Failure_Cleanup
For more information, please visit auto_nag documentation.

New failure instance: https://treeherder.mozilla.org/logviewer?job_id=384050683&repo=autoland