1952711 - Perma browser/components/resistfingerprinting/test/browser/browser_exslt_timezone_load.js | single tracking bug

Status: REOPENED

(Core :: Privacy: Anti-Tracking, defect, P5)

Description

[Treeherder Bug Filer]

Filed by: smolnar [at] mozilla.com
Parsed log: https://treeherder.mozilla.org/logviewer?job_id=498211020&repo=mozilla-central
Full log: https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/FfquossTT6eoUBv-bukdRw/runs/0/artifacts/public/logs/live_backing.log

---

TEST-PASS | browser/components/resistfingerprinting/test/browser/browser_exslt_timezone_load.js | Timezone is +00:00. - 
[task 2025-03-09T10:39:33.946Z] 10:39:33     INFO - Leaving test bound 
[task 2025-03-09T10:39:33.947Z] 10:39:33     INFO - Entering test bound 
[task 2025-03-09T10:39:33.947Z] 10:39:33     INFO - Buffered messages logged at 10:39:33
[task 2025-03-09T10:39:33.948Z] 10:39:33     INFO - Console message: [JavaScript Warning: "HTTPS-First Mode: Upgrading insecure speculative TCP connection http://example.net/browser/browser/components/resistfingerprinting/test/browser/file_dummy.html to use https."]
[task 2025-03-09T10:39:33.949Z] 10:39:33     INFO - Console message: [JavaScript Warning: "HTTPS-First Mode: Upgrading insecure request http://example.net/browser/browser/components/resistfingerprinting/test/browser/file_dummy.html to use https."]
[task 2025-03-09T10:39:33.949Z] 10:39:33     INFO - Buffered messages finished
[task 2025-03-09T10:39:33.951Z] 10:39:33     INFO - TEST-UNEXPECTED-FAIL | browser/components/resistfingerprinting/test/browser/browser_exslt_timezone_load.js | Timezone is -08:00. - 
[task 2025-03-09T10:39:33.951Z] 10:39:33     INFO - Stack trace:
[task 2025-03-09T10:39:33.951Z] 10:39:33     INFO - chrome://mochikit/content/browser-test.js:test_ok:1626
[task 2025-03-09T10:39:33.951Z] 10:39:33     INFO - chrome://mochitests/content/browser/browser/components/resistfingerprinting/test/browser/browser_exslt_timezone_load.js:run_test:81
[task 2025-03-09T10:39:33.951Z] 10:39:33     INFO - chrome://mochitests/content/browser/browser/components/resistfingerprinting/test/browser/browser_exslt_timezone_load.js:null:85
[task 2025-03-09T10:39:33.951Z] 10:39:33     INFO - chrome://mochikit/content/browser-test.js:handleTask:1170
[task 2025-03-09T10:39:33.952Z] 10:39:33     INFO - chrome://mochikit/content/browser-test.js:_runTaskBasedTest:1242
[task 2025-03-09T10:39:33.952Z] 10:39:33     INFO - chrome://mochikit/content/browser-test.js:Tester_execTest:1383
[task 2025-03-09T10:39:33.952Z] 10:39:33     INFO - chrome://mochikit/content/browser-test.js:nextTest/<:1159
[task 2025-03-09T10:39:33.952Z] 10:39:33     INFO - chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:SimpleTest.waitForFocus/<:1058
[task 2025-03-09T10:39:33.952Z] 10:39:33     INFO - Leaving test bound 
[task 2025-03-09T10:39:34.348Z] 10:39:34     INFO - GECKO(2556) | MEMORY STAT | vsize 2104884MB | vsizeMaxContiguous 66020269MB | residentFast 718MB | heapAllocated 160MB
[task 2025-03-09T10:39:34.349Z] 10:39:34     INFO - TEST-OK | browser/components/resistfingerprinting/test/browser/browser_exslt_timezone_load.js | took 2374ms

Comment 1

[Sandor Molnar[:smolnar]]

Attachment: Bug 1952711 - Temporarily disable browser_exslt_timezone_load.js win because of perma failures due to winter hour change. r=#intermittent-reviewers,aryx,ryanvm

Comment 2

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/df246d46dadf
Temporarily disable browser_exslt_timezone_load.js win because of perma failures due to winter hour change.

Comment 3

[Serban Stanca [:SerbanS]]

https://hg.mozilla.org/mozilla-central/rev/df246d46dadf

Comment 4

[Intermittent Failures Robot]

Summary

104 failures in 4009 pushes (0.026 failures/push) were associated with this bug in the last 7 days.

This is the #8 most frequent failure this week.

This failure happened more than 75 times this week! Resolving this bug is a very high priority.

Try to resolve this bug as soon as possible. If unresolved for 1 week, the affected test(s) may be disabled.

Repository breakdown:

• mozilla-beta: 72
• mozilla-central: 12
• autoland: 11
• try: 9

Platform and build breakdown:

• windows10-64: 11
  • asan: 11
• windows11-32-24h2: 23
  • debug: 12
  • opt: 11
• windows11-64: 3
  • asan: 3
• windows11-64-24h2: 54
  • debug: 29
  • opt: 25
• windows11-64-24h2-ccov: 5
  • opt: 5
• windows11-64-24h2-devedition: 8
  • opt: 8

Table

	msix	no_variant	spi-nw
windows10-64--/asan		11
windows11-32-24h2--/debug		12
windows11-32-24h2--/opt		11
windows11-64--/asan		3
windows11-64-24h2--/debug	14	13	2
windows11-64-24h2--/opt	11	11	3
windows11-64-24h2-ccov--/opt		5
windows11-64-24h2-devedition--/opt		8

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1952711&startday=2025-03-03&endday=2025-03-09&tree=all

Comment 5

[Intermittent Failures Robot]

Summary

37 failures in 766 pushes (0.048 failures/push) were associated with this bug yesterday.

Repository breakdown:

• mozilla-beta: 8
• mozilla-release: 28
• try: 1

Platform and build breakdown:

• windows10-64: 1
  • asan: 1
• windows11-32-24h2: 10
  • debug: 1
  • opt: 9
• windows11-64-2009-asan-qr: 9
  • opt: 9
• windows11-64-2009-qr: 11
  • opt: 11
• windows11-64-24h2: 5
  • debug: 2
  • opt: 3
• windows11-64-24h2-devedition: 1
  • opt: 1

Table

	msix	no_variant
windows10-64--/asan		1
windows11-32-24h2--/debug		1
windows11-32-24h2--/opt		9
windows11-64-2009-asan-qr--/opt		9
windows11-64-2009-qr--/opt	5	6
windows11-64-24h2--/debug	1	1
windows11-64-24h2--/opt	1	2
windows11-64-24h2-devedition--/opt		1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1952711&startday=2025-03-10&endday=2025-03-10&tree=all

Comment 6

[Intermittent Failures Robot]

Summary

48 failures in 942 pushes (0.051 failures/push) were associated with this bug yesterday.

Repository breakdown:

• mozilla-beta: 42
• mozilla-esr128: 6

Platform and build breakdown:

• windows10-64: 5
  • asan: 5
• windows11-32-2009-qr: 2
  • debug: 1
  • opt: 1
• windows11-32-24h2: 13
  • debug: 7
  • opt: 6
• windows11-64-2009-asan-qr: 1
  • opt: 1
• windows11-64-2009-qr: 3
  • debug: 3
• windows11-64-24h2: 20
  • debug: 11
  • opt: 9
• windows11-64-24h2-devedition: 4
  • opt: 4

Table

	msix	no_variant
windows10-64--/asan		5
windows11-32-2009-qr--/debug		1
windows11-32-2009-qr--/opt		1
windows11-32-24h2--/debug		7
windows11-32-24h2--/opt		6
windows11-64-2009-asan-qr--/opt		1
windows11-64-2009-qr--/debug	2	1
windows11-64-24h2--/debug	7	4
windows11-64-24h2-devedition--/opt		4
windows11-64-24h2--/opt	4	5

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1952711&startday=2025-03-11&endday=2025-03-11&tree=all

Comment 7

[Serban Stanca [:SerbanS]]

Hi @aryx! Would this disable patch require an uplift on beta or is a fix incoming and we should leave it at that for now?

Comment 8

[Sebastian Hengst [:aryx] (needinfo me if it's about an intermittent or backout)]

See bug 1928871. Could you fix this test failure which started when North America switched to DST last weekend?

Comment 9

[Fatih Kilic [:fkilic]]

Unfortunately I don't know how to fix this one :/ We don't hard code expected timezone offset. I'm not sure what's going on with this one. It is only windows too right? This is really weird.

I mean I will keep this in my todo list, but I can't tell when or if I can even solve it

Comment 10

[Intermittent Failures Robot]

Summary

110 failures in 1091 pushes (0.101 failures/push) were associated with this bug yesterday.

Repository breakdown:

• mozilla-beta: 92
• mozilla-esr128: 17
• mozilla-release: 1

Platform and build breakdown:

• windows10-64: 17
  • asan: 17
• windows11-32-2009-qr: 6
  • debug: 3
  • opt: 3
• windows11-32-24h2: 21
  • debug: 15
  • opt: 6
• windows11-64-2009-asan-qr: 4
  • opt: 4
• windows11-64-2009-qr: 8
  • debug: 5
  • opt: 3
• windows11-64-24h2: 47
  • debug: 32
  • opt: 15
• windows11-64-24h2-devedition: 7
  • opt: 7

Table

	msix	no_variant
windows10-64--/asan		17
windows11-32-2009-qr--/debug		3
windows11-32-2009-qr--/opt		3
windows11-32-24h2--/debug		15
windows11-32-24h2--/opt		6
windows11-64-2009-asan-qr--/opt		4
windows11-64-2009-qr--/debug	2	3
windows11-64-2009-qr--/opt	1	2
windows11-64-24h2--/debug	15	17
windows11-64-24h2-devedition--/opt		7
windows11-64-24h2--/opt	6	9

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1952711&startday=2025-03-13&endday=2025-03-13&tree=all

Comment 11

[Intermittent Failures Robot]

Summary

46 failures in 788 pushes (0.058 failures/push) were associated with this bug yesterday.

Repository breakdown:

• mozilla-beta: 46

Platform and build breakdown:

• windows10-64: 6
  • asan: 6
• windows11-32-24h2: 11
  • debug: 6
  • opt: 5
• windows11-64-24h2: 23
  • debug: 12
  • opt: 11
• windows11-64-24h2-devedition: 6
  • opt: 6

Table

	msix	no_variant
windows10-64--/asan		6
windows11-32-24h2--/debug		6
windows11-32-24h2--/opt		5
windows11-64-24h2--/debug	6	6
windows11-64-24h2-devedition--/opt		6
windows11-64-24h2--/opt	6	5

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1952711&startday=2025-03-14&endday=2025-03-14&tree=all

Comment 12

[Intermittent Failures Robot]

Summary

26 failures in 263 pushes (0.099 failures/push) were associated with this bug yesterday.

Repository breakdown:

• mozilla-beta: 13
• mozilla-release: 13

Platform and build breakdown:

• windows10-64: 2
  • asan: 2
• windows11-32-24h2: 5
  • debug: 2
  • opt: 3
• windows11-64-2009-asan-qr: 4
  • opt: 4
• windows11-64-2009-qr: 7
  • opt: 7
• windows11-64-24h2: 7
  • debug: 4
  • opt: 3
• windows11-64-24h2-devedition: 1
  • opt: 1

Table

	msix	no_variant
windows10-64--/asan		2
windows11-32-24h2--/debug		2
windows11-32-24h2--/opt		3
windows11-64-2009-asan-qr--/opt		4
windows11-64-2009-qr--/opt	4	3
windows11-64-24h2--/debug	2	2
windows11-64-24h2-devedition--/opt		1
windows11-64-24h2--/opt	2	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1952711&startday=2025-03-15&endday=2025-03-15&tree=all