(In reply to Andreea Pavel [:apavel] from comment #0) > [Tracking Requested - why for this release]: > > Central as Beta simulation > > Treeherder link: > https://treeherder.mozilla.org/#/ > jobs?repo=try&revision=0733e9ce5377d72a14d0609d19db8979155be24a&selectedJob=2 > 03657675 > > Failure log: > https://treeherder.mozilla.org/#/jobs?repo=try&resultStatus=testfailed, > busted,exception,retry,usercancel, > runnable&revision=0733e9ce5377d72a14d0609d19db8979155be24a&selectedJob=203657 > 675 > > Robert, could bug 1496552 have caused this failure? Hrm, that would be very surprising to me if it did... that change really shouldn't be visible outside of the contents of the telemetry main ping. Is this the Firefox parent process crashing?: 14:37:43 INFO - TEST-UNEXPECTED-ERROR | testing\firefox-ui\tests\functional\sessionstore\test_restore_windows_after_restart_and_quit.py TestSessionStoreDisabled.test_restore_with_restart | IOError: Process has been unexpectedly closed (Exit code: 0) (Reason: Requested restart of the application was aborted) If so is it possible to get a crash report of some kind (stack trace or at least a minidump)?

Sorry, wrong links because i was comparing failures with the previous days: https://treeherder.mozilla.org/#/jobs?repo=try&resultStatus=testfailed,busted,exception,usercancel,runnable&revision=fe899aa0ca1d613a0faf9d2b62328cb355c5e494&selectedJob=203857446 Failure log: https://treeherder.mozilla.org/logviewer.html#?job_id=203857446&repo=try&lineNumber=48485 17:24:41 INFO - 1538846681934 Marionette TRACE 2 <- [1,79,null,{"value":null}] 17:24:41 INFO - 1538846681935 Marionette TRACE 2 -> [0,80,"WebDriver:GetPageSource",{}] 17:24:41 INFO - TEST-UNEXPECTED-FAIL | testing\firefox-ui\tests\functional\sessionstore\test_restore_windows_after_restart_and_quit.py TestSessionStoreDisabled.test_restore_with_restart | AssertionError: Non private browsing windows should have 17:24:41 INFO - been restored. Expected set([('http://127.0.0.1:60389/layout/mozilla.html',), ('http://127.0.0.1:60389/layout/mozilla_governance.html', 'http://127.0.0.1:60389/layout/mozilla_grants.html'), ('http://127.0.0.1:60389/layout/mozilla_organizations.html', 'http://127.0.0.1:60389/layout/mozilla_community.html')]), got set([(u'about:home',)]). 17:24:41 INFO - Traceback (most recent call last): 17:24:41 INFO - File "Z:\task_1538846155\build\venv\lib\site-packages\marionette_harness\marionette_test\testcases.py", line 159, in run 17:24:41 INFO - testMethod() 17:24:41 INFO - File "Z:\task_1538846155\build\tests\firefox-ui\tests\testing\firefox-ui\tests\functional\sessionstore\test_restore_windows_after_restart_and_quit.py", line 82, in test_restore_with_restart 17:24:41 INFO - """.format(self.test_windows, current_windows_set)) 17:24:41 INFO - TEST-INFO took 9792ms

Thanks. I still don't see anything at all close to the patch in bug 1496552 - do these failure happen without that change?

We did not test without it. Aryx, could this be also related to what you are referring to in Bug 1497062?