120922 2013-09-06 22:16:20 -0700 compositing/overlap-blending/children-opacity-huge.html and children-opacity-no-overlap.html are failing 2013-09-07 09:18:47 -0700 1 1 1 Unclassified WebKit Layout and Rendering 528+ (Nightly build) Unspecified Unspecified NEW P2 Normal --- 1 rniwa webkit-unassigned ap dino simon.fraser thorton oldest_to_newest 926003 0 rniwa 2013-09-06 22:16:20 -0700 http://build.webkit.org/results/Apple%20MountainLion%20Release%20WK1%20(Tests)/r155235%20(12619)/results.html http://webkit-test-results.appspot.com/dashboards/flakiness_dashboard.html#tests=compositing%2Foverlap-blending%2Fchildren-opacity-huge.html%2Ccompositing%2Foverlap-blending%2Fchildren-opacity-no-overlap.html It seems like we've introduced some nondeterministic behavior in WebKit. Random compositing tests are failing on each run. This is bad. It's going to clog EWS and Commit Queue completely. 926004 1 rniwa 2013-09-06 22:17:44 -0700 Committed r155237: <http://trac.webkit.org/changeset/155237> 926005 2 simon.fraser 2013-09-06 22:19:56 -0700 Did it start with http://trac.webkit.org/changeset/155140 ? 926010 3 rniwa 2013-09-06 22:24:43 -0700 (In reply to comment #2) > Did it start with http://trac.webkit.org/changeset/155140 ? It's hard to tell. Because there is no single test that has been failing. http://build.webkit.org/builders/Apple%20MountainLion%20Release%20WK2%20%28Tests%29?numbuilds=100 926012 4 rniwa 2013-09-06 22:26:06 -0700 It seems like media/video-object-fit.html started failing after that patch on Lion: http://webkit-test-results.appspot.com/dashboards/flakiness_dashboard.html#tests=media%2Fvideo-object-fit.html 926015 5 rniwa 2013-09-06 22:27:31 -0700 EWS seems to indicate something bad happened about 10 hours ago. 926141 6 simon.fraser 2013-09-06 22:35:31 -0700 That would implicate http://trac.webkit.org/changeset/155196 926144 7 rniwa 2013-09-06 22:45:20 -0700 (In reply to comment #6) > That would implicate http://trac.webkit.org/changeset/155196 I've rolled that change out in http://trac.webkit.org/changeset/155235 but that change was in response to EWS getting behind so the underlying issue must be somewhere else. 926207 8 ap 2013-09-07 09:18:47 -0700 These two tests are failing for me locally with r155076.