Filed by: rvandermeulen [at] mozilla.com https://treeherder.mozilla.org/logviewer.html#?job_id=123280226&repo=mozilla-beta https://queue.taskcluster.net/v1/task/TCRi1tthRtenev2UtUQSvw/runs/0/artifacts/public/logs/live_backing.log

Something triggered a shutdown of Firefox. Maybe it's a content crash which went through without finding the minidump files. Maybe related to bug 1376795. [task 2017-08-15T15:17:15.244625Z] 15:17:15 INFO - 1502810235006 Marionette DEBUG Received DOM event "DOMContentLoaded" for "about:blank" [task 2017-08-15T15:17:20.274128Z] 15:17:20 INFO - ###!!! [Parent][RunMessage] Error: Channel error: cannot send/recv [task 2017-08-15T15:17:20.275464Z] 15:17:20 INFO - ###!!! [Parent][RunMessage] Error: Channel error: cannot send/recv [task 2017-08-15T15:17:20.275539Z] 15:17:20 INFO - ###!!! [Parent][RunMessage] Error: Channel error: cannot send/recv [task 2017-08-15T15:17:20.276477Z] 15:17:20 INFO - ###!!! [Parent][RunMessage] Error: Channel error: cannot send/recv [task 2017-08-15T15:17:20.277102Z] 15:17:20 INFO - ###!!! [Parent][RunMessage] Error: Channel error: cannot send/recv [task 2017-08-15T15:17:20.277854Z] 15:17:20 INFO - ###!!! [Parent][RunMessage] Error: Channel error: cannot send/recv [task 2017-08-15T15:17:20.314410Z] 15:17:20 INFO - ###!!! [Parent][RunMessage] Error: Channel error: cannot send/recv [task 2017-08-15T15:17:20.315515Z] 15:17:20 INFO - ###!!! [Parent][RunMessage] Error: Channel error: cannot send/recv [task 2017-08-15T15:17:20.316457Z] 15:17:20 INFO - ###!!! [Parent][RunMessage] Error: Channel error: cannot send/recv [task 2017-08-15T15:17:20.408403Z] 15:17:20 INFO - 1502810240398 Marionette DEBUG Received DOM event "DOMContentLoaded" for "about:" [task 2017-08-15T15:17:20.715494Z] 15:17:20 INFO - 1502810240709 Marionette DEBUG Received DOM event unload for [object XULDocument] [task 2017-08-15T15:17:20.731578Z] 15:17:20 INFO - 1502810240728 Marionette TRACE 6 <- [1,44,null,{}] [task 2017-08-15T15:17:20.739661Z] 15:17:20 INFO - 1502810240737 Marionette TRACE 6 -> [0,45,"setContext",{"value":"chrome"}] [task 2017-08-15T15:17:20.742527Z] 15:17:20 INFO - 1502810240737 Marionette TRACE 6 <- [1,45,null,{}] [task 2017-08-15T15:17:20.743502Z] 15:17:20 INFO - JavaScript error: resource://shield-recipe-client/lib/RecipeRunner.jsm, line 153: TypeError: prefs is undefined [task 2017-08-15T15:17:20.748049Z] 15:17:20 INFO - 1502810240743 Marionette TRACE 6 -> [0,46,"getContext",{}] [task 2017-08-15T15:17:20.750101Z] 15:17:20 INFO - 1502810240744 Marionette TRACE 6 <- [1,46,null,{"value":"chrome"}] [task 2017-08-15T15:17:20.752212Z] 15:17:20 INFO - 1502810240747 Marionette TRACE 6 -> [0,47,"setContext",{"value":"chrome"}] [task 2017-08-15T15:17:20.753282Z] 15:17:20 INFO - 1502810240748 Marionette TRACE 6 <- [1,47,null,{}] [task 2017-08-15T15:17:20.769686Z] 15:17:20 INFO - 1502810240758 Marionette DEBUG Closed connection 6 [task 2017-08-15T15:17:21.351256Z] 15:17:21 INFO - *** UTM:SVC TimerManager:registerTimer called after profile-before-change notification. Ignoring timer registration for id: telemetry_modules_ping [task 2017-08-15T15:17:21.469537Z] 15:17:21 INFO - 1502810241462 Marionette DEBUG Received observer notification "xpcom-shutdown" [task 2017-08-15T15:17:21.469653Z] 15:17:21 INFO - 1502810241462 Marionette DEBUG Received observer notification "xpcom-shutdown"

See https://wiki.mozilla.org/Bugmasters/Projects/Bug_Handling/Bug_Husbandry#Intermittent_Test_Failure_Cleanup