Filed by: imoraru [at] mozilla.com
Parsed log: https://treeherder.mozilla.org/logviewer?job_id=386018933&repo=autoland
Full log: https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/DO8Kw96xTzixqSxBV9J4SA/runs/0/artifacts/public/logs/live_backing.log
Reftest URL: https://hg.mozilla.org/mozilla-central/raw-file/tip/layout/tools/reftest/reftest-analyzer.xhtml#logurl=https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/DO8Kw96xTzixqSxBV9J4SA/runs/0/artifacts/public/logs/live_backing.log&only_show_unexpected=1

[task 2022-08-01T16:06:57.972Z] 16:06:57     INFO - TEST-START | browser/components/firefoxview/tests/browser/browser_notification_dot.js
[task 2022-08-01T16:07:42.975Z] 16:07:42     INFO - TEST-INFO | started process screentopng
[task 2022-08-01T16:07:43.236Z] 16:07:43     INFO - TEST-INFO | screentopng: exit 0
[task 2022-08-01T16:07:43.236Z] 16:07:43     INFO - Buffered messages logged at 16:06:57
[task 2022-08-01T16:07:43.237Z] 16:07:43     INFO - Entering setup bound 
[task 2022-08-01T16:07:43.240Z] 16:07:43     INFO - true
[task 2022-08-01T16:07:43.241Z] 16:07:43     INFO - Leaving setup bound 
[task 2022-08-01T16:07:43.241Z] 16:07:43     INFO - Entering test bound testNotificationDot
[task 2022-08-01T16:07:43.241Z] 16:07:43     INFO - updating lastFetch:1659370018
[task 2022-08-01T16:07:43.242Z] 16:07:43     INFO - Buffered messages logged at 16:06:58
[task 2022-08-01T16:07:43.242Z] 16:07:43     INFO - Console message: 1659370017997	FirefoxView.TabsSetup	DEBUG	maybeUpdateUI, _uiUpdateNeeded:: true
[task 2022-08-01T16:07:43.244Z] 16:07:43     INFO - TEST-PASS | browser/components/firefoxview/tests/browser/browser_notification_dot.js | Got the Firefox View button - 
[task 2022-08-01T16:07:43.244Z] 16:07:43     INFO - TEST-PASS | browser/components/firefoxview/tests/browser/browser_notification_dot.js | The Firefox View button is showing - 
[task 2022-08-01T16:07:43.246Z] 16:07:43     INFO - Buffered messages finished
[task 2022-08-01T16:07:43.246Z] 16:07:43     INFO - TEST-UNEXPECTED-FAIL | browser/components/firefoxview/tests/browser/browser_notification_dot.js | Test timed out - 
[task 2022-08-01T16:07:43.246Z] 16:07:43     INFO - Not taking screenshot here: see the one that was previously logged
[task 2022-08-01T16:07:43.251Z] 16:07:43     INFO - TEST-UNEXPECTED-FAIL | browser/components/firefoxview/tests/browser/browser_notification_dot.js | Cleanup function threw an exception - at resource://testing-common/BrowserTestUtils.jsm:1797 - TypeError: can't access property "ownerGlobal", tab is null
[task 2022-08-01T16:07:43.252Z] 16:07:43     INFO - GECKO(10218) | MEMORY STAT | vsize 3321MB | residentFast 473MB | heapAllocated 218MB
[task 2022-08-01T16:07:43.252Z] 16:07:43     INFO - TEST-OK | browser/components/firefoxview/tests/browser/browser_notification_dot.js | took 45012ms
[task 2022-08-01T16:07:43.253Z] 16:07:43     INFO - checking window state
[task 2022-08-01T16:07:43.253Z] 16:07:43     INFO - GECKO(10218) | Completed ShutdownLeaks collections in process 10218
[task 2022-08-01T16:07:43.253Z] 16:07:43     INFO - TEST-START | Shutdown
[task 2022-08-01T16:07:43.253Z] 16:07:43     INFO - Browser Chrome Test Summary
[task 2022-08-01T16:07:43.254Z] 16:07:43     INFO - Passed:  25
[task 2022-08-01T16:07:43.254Z] 16:07:43     INFO - Failed:  2
[task 2022-08-01T16:07:43.254Z] 16:07:43     INFO - Todo:    0
[task 2022-08-01T16:07:43.255Z] 16:07:43     INFO - Mode:    e10s
[task 2022-08-01T16:07:43.255Z] 16:07:43     INFO - *** End BrowserChrome Test Results ***
[task 2022-08-01T16:07:43.257Z] 16:07:43     INFO - GECKO(10218) | Exiting due to channel error.
[task 2022-08-01T16:07:43.257Z] 16:07:43     INFO - GECKO(10218) | Exiting due to channel error.
[task 2022-08-01T16:07:43.258Z] 16:07:43     INFO - GECKO(10218) | Exiting due to channel error.
[task 2022-08-01T16:07:43.259Z] 16:07:43     INFO - GECKO(10218) | Exiting due to channel error.
[task 2022-08-01T16:07:43.260Z] 16:07:43     INFO - GECKO(10218) | Exiting due to channel error.
[task 2022-08-01T16:07:43.260Z] 16:07:43     INFO - GECKO(10218) | Exiting due to channel error.
[task 2022-08-01T16:07:43.261Z] 16:07:43     INFO - GECKO(10218) | Exiting due to channel error.
[task 2022-08-01T16:07:43.262Z] 16:07:43     INFO - TEST-INFO | Main app process: exit 0
[task 2022-08-01T16:07:43.263Z] 16:07:43     INFO - runtests.py | Application ran for: 0:00:59.055503

:niklas, since you are the author of the regressor, bug 1774397, could you take a look?
For more information, please visit auto_nag documentation.

Set release status flags based on info from the regressing bug 1774397

This feature was disabled so we should either remove or skip the tests.

(In reply to Sarah Clements [:sclements] from comment #13)

This feature was disabled so we should either remove or skip the tests.

Unless we want to remove the feature entirely, I think we should keep the tests passing - otherwise we're implicitly supporting a pref which we're not actually sure is working from one release to another.

I've taken a look at this test, and at least some of the intermittency comes from the expectation of a pref-value-update from services.sync.lastTabFetch. We record the lastTabFetch in seconds - making it likely that from one test to another we'll update the pref to the same int value as it already had, and none of the cascading checks and updates that would result from a change happen - as there was no change.

I'll submit a patch to address that and we can see if that drops the intermittent frequency.

https://hg.mozilla.org/mozilla-central/rev/3af6a65d70a4