2070393 - Perma [tier 2] android ccov gfx/layers/apz/test/mochitest/test_group_checkerboarding.html | single tracking bug

Status: RESOLVED FIXED

(Core :: Panning and Zooming, defect, P5)

Description

[Treeherder Bug Filer]

Filed by: agoloman [at] mozilla.com
Parsed log: https://treeherder.mozilla.org/logviewer?job_id=591208912&repo=mozilla-central&task=OhaebNbwROu5Ql2NOwiufw.0
Full log: https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/OhaebNbwROu5Ql2NOwiufw/runs/0/artifacts/public/logs/live_backing.log

---

[task 2026-09-08T23:24:12.977+00:00] 23:24:12     INFO - TEST-PASS | gfx/layers/apz/test/mochitest/test_group_checkerboarding.html | helper_checkerboard_scrollinfo.html | At y=632: Found the scroller in the APZ data
[task 2026-09-08T23:24:12.977+00:00] 23:24:12     INFO - Buffered messages finished
[task 2026-09-08T23:24:12.977+00:00] 23:24:12     INFO - TEST-UNEXPECTED-FAIL | gfx/layers/apz/test/mochitest/test_group_checkerboarding.html | Test timed out. - expected PASS
[task 2026-09-08T23:24:12.978+00:00] 23:24:12     INFO - TEST-UNEXPECTED-TIMEOUT | gfx/layers/apz/test/mochitest/test_group_checkerboarding.html | Test timed out
[task 2026-09-08T23:24:12.978+00:00] 23:24:12     INFO - {'runtime': '310341'}
[task 2026-09-08T23:24:12.978+00:00] 23:24:12     INFO - TEST-INFO took 310542ms
[task 2026-09-08T23:24:12.978+00:00] 23:24:12     INFO - TEST-START | gfx/layers/apz/test/mochitest/test_group_displayport-2.html

Comment 1

[BugBot [:suhaib / :marco]]

Set release status flags based on info from the regressing bug 1399396

:nicolas.guichard, since you are the author of the regressor, bug 1399396, could you take a look?

For more information, please visit BugBot documentation.

Comment 2

[Intermittent Failures Robot]

16 failures were associated with this bug yesterday.

Repository breakdown:

• mozilla-central: 16

Table

	fis-hv	no_variant	nofis	xorig
android-x86_64/ccov	4	7	3	2

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=2070393&startday=2026-09-09&endday=2026-09-09&tree=all

Comment 3

[BugBot [:suhaib / :marco]]

Set release status flags based on info from the regressing bug 1399396

Comment 4

[Intermittent Failures Robot]

29 failures were associated with this bug yesterday.

Repository breakdown:

• mozilla-central: 29

Table

	fis-hv	no_variant	nofis	xorig
android-x86_64/ccov	7	6	7	8
windows11-x86_64/ccov		1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=2070393&startday=2026-09-10&endday=2026-09-10&tree=all

Comment 5

[Nicolas Guichard]

Attachment: Bug 2070393 - Skip test_group_checkerboarding.html on Android ccov. r=#intermittent-reviewers!

This test times out with the added code coverage overhead.

Comment 6

[Intermittent Failures Robot]

71 failures were associated with this bug in the last 7 days.

This failure happened more than 30 times this week! Resolving this bug is a high priority.

Try to resolve this bug as soon as possible. If unresolved for 2 weeks, the affected test(s) may be disabled.

Repository breakdown:

• mozilla-central: 71

Table

	fis-hv	no_variant	nofis	xorig
android-x86_64/ccov	19	19	16	16
windows11-x86_64/ccov		1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=2070393&startday=2026-09-07&endday=2026-09-13&tree=all

Comment 7

[Pulsebot]

Pushed by [e-mail]:
https://github.com/mozilla-firefox/firefox/commit/ecc315895bf2
https://hg.mozilla.org/integration/autoland/rev/319e7eca987b
Skip test_group_checkerboarding.html on Android ccov. r=botond,hiro

Comment 8

[Goloman Adrian[:agoloman]]

https://hg.mozilla.org/mozilla-central/rev/319e7eca987b

Comment 9

[BugBot [:suhaib / :marco]]

The patch landed in nightly and beta is affected.
:nicolas.guichard, is this bug important enough to require an uplift?

• If yes, please nominate the patch for beta approval.
  • See https://wiki.mozilla.org/Release_Management/Requesting_an_Uplift for documentation on how to request an uplift.
• If no, please set status-firefox157 to wontfix.

For more information, please visit BugBot documentation.

Comment 10

[Nicolas Guichard]

We don't run ccov tasks for other branches.

Comment 11

[Intermittent Failures Robot]

6 failures were associated with this bug in the last 7 days.

Repository breakdown:

• mozilla-central: 6

Table

	fis-hv	no_variant	xorig
android-x86_64/ccov	2	1	3

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=2070393&startday=2026-09-14&endday=2026-09-20&tree=all