The following three tests started failing a lot recently: test_animations_playbackrate.html test_animations_iterationstart.html test_animations_effect_timing_enddelay.html It appears that this started happening since bug 759252 landed. See bug 1351038 comment 8 onwards for some analysis. It seems we fail to remove animations from the compositor (in time?) in some cases. The current suspicion is that MozAfterPaint events from the chrome document (tab bar) are somehow causing the test to think painting has finished. These tests are failing frequently enough that we will disable them to give us time to investigate properly. This bug tracks restoring them once we have worked out the cause.
In bug 1351038 I ended up disabling test_animations_effect_timing_enddelay.html altogether (not just replacing RunsOn.Compositor with RunsOn.Either). The following log from that file, however, is particularly interesting: https://treeherder.mozilla.org/logviewer.html#?job_id=87808294&repo=try&lineNumber=2824 This is from a push to try with the offending test having only the s/RunsOn.Compositor/RunsOn.Either/ change made. In this log we're ticking the refresh driver and updating the compositor but we're not updating style on the main thread. I'm not sure why.
I am guessing bug 1354080 solved the failure. https://treeherder.mozilla.org/#/jobs?repo=try&revision=3fef2c1786e11d9e0f05678bebe84a0f5b223a8e
Let's see how these tests behave now: https://treeherder.mozilla.org/#/jobs?repo=try&revision=ee4cd77c9f670e94f10be1d7f8b9927908172080
(In reply to Brian Birtles (:birtles, away until 19 Sep) from comment #3) > Let's see how these tests behave now: > https://treeherder.mozilla.org/#/ > jobs?repo=try&revision=ee4cd77c9f670e94f10be1d7f8b9927908172080 So far, so good. There are still a few jobs left to complete but assuming they're ok might try to re-enable these tests.
Comment on attachment 8905816 [details] Bug 1352336 - Restore intermittently failing OMTA tests: test_animations_playbackrate.html, test_animations_iterationstart.html, test_animations_effect_timing_enddelay.html; https://reviewboard.mozilla.org/r/177622/#review182682 Yay!
Attachment #8905816 - Flags: review?(hikezoe) → review+
Pushed by email@example.com: https://hg.mozilla.org/integration/autoland/rev/915065b1b334 Restore intermittently failing OMTA tests: test_animations_playbackrate.html, test_animations_iterationstart.html, test_animations_effect_timing_enddelay.html; r=hiro
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