Filed by: nbeleuzu [at] mozilla.com https://treeherder.mozilla.org/logviewer.html#?job_id=166092842&repo=autoland https://queue.taskcluster.net/v1/task/Xs8pfJQjQfGWOz_XafZHTw/runs/0/artifacts/public/logs/live_backing.log Relevant log data: 22:46:02 INFO - 333 INFO TEST-START | browser/components/customizableui/test/browser_panelUINotifications_fullscreen.js 22:46:47 INFO - TEST-INFO | started process screenshot 22:46:47 INFO - TEST-INFO | screenshot: exit 0 22:46:47 INFO - Buffered messages logged at 22:46:02 22:46:47 INFO - 334 INFO Entering test bound testFullscreen 22:46:47 INFO - 335 INFO TEST-PASS | browser/components/customizableui/test/browser_panelUINotifications_fullscreen.js | update-manual doorhanger is closed. - 22:46:47 INFO - 336 INFO TEST-PASS | browser/components/customizableui/test/browser_panelUINotifications_fullscreen.js | update-manual doorhanger is showing. - 22:46:47 INFO - 337 INFO TEST-PASS | browser/components/customizableui/test/browser_panelUINotifications_fullscreen.js | PanelUI doorhanger is only displaying one notification. - 22:46:47 INFO - 338 INFO TEST-PASS | browser/components/customizableui/test/browser_panelUINotifications_fullscreen.js | PanelUI is displaying the update-manual notification. - 22:46:47 INFO - Buffered messages finished 22:46:47 ERROR - 339 INFO TEST-UNEXPECTED-FAIL | browser/components/customizableui/test/browser_panelUINotifications_fullscreen.js | Test timed out - 22:46:47 INFO - GECKO(4556) | MEMORY STAT | vsize 835MB | vsizeMaxContiguous 696MB | residentFast 266MB | heapAllocated 121MB 22:46:47 INFO - 340 INFO TEST-OK | browser/components/customizableui/test/browser_panelUINotifications_fullscreen.js | took 45022ms

Dão, what are the odds we need the same fix as in bug 1443364 here: https://dxr.mozilla.org/mozilla-central/source/browser/components/customizableui/test/browser_panelUINotifications_fullscreen.js#22 let popuphiddenPromise = BrowserTestUtils.waitForEvent(PanelUI.notificationPanel, "popuphidden"); EventUtils.synthesizeKey("KEY_F11"); await popuphiddenPromise; await new Promise(executeSoon); ie the synthesizeKey is presumably getting lost as well - this got filed within minutes of the other bug, and also shows up in a push about 5 pushes after the tabbrowser binding removal. These 2 bugs are just the ones I noticed because they're in Fx::Toolbars and Customization, but I wonder if there are other tests that went intermittent. :-(

Yeah, this appears to be exactly the same from what I can tell locally. It also looks like the fix was effective in bug 1443364, so I'll file a followup and ask Enn to take a look.

Comment on attachment 8957095 [details] Bug 1443360 - Fix browser_panelUINotifications_fullscreen.js intermittent failure. https://reviewboard.mozilla.org/r/226046/#review232002 Thanks!

Pushed by dgottwald@mozilla.com: https://hg.mozilla.org/integration/autoland/rev/00c1789cdd6e Fix browser_panelUINotifications_fullscreen.js intermittent failure. r=Gijs