1950795 - Intermittent browser/components/profiles/tests/browser/browser_test_last_tab.js | single tracking bug

Status: RESOLVED FIXED

(Toolkit :: Startup and Profile System, defect, P5)

Description

[Treeherder Bug Filer]

Filed by: ctuns [at] mozilla.com
Parsed log: https://treeherder.mozilla.org/logviewer?job_id=496772167&repo=autoland
Full log: https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/WN-9z47QQa-NA_yJ6ISS_w/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/WN-9z47QQa-NA_yJ6ISS_w/runs/0/artifacts/public/logs/live_backing.log&only_show_unexpected=1

---

[task 2025-02-27T03:01:04.614Z] 03:01:04     INFO - TEST-START | browser/components/profiles/tests/browser/browser_test_last_tab.js
[task 2025-02-27T03:01:05.000Z] 03:01:05     INFO - TEST-INFO | started process screentopng
[task 2025-02-27T03:01:05.205Z] 03:01:05     INFO - TEST-INFO | screentopng: exit 0
[task 2025-02-27T03:01:05.205Z] 03:01:05     INFO - Buffered messages logged at 03:01:04
[task 2025-02-27T03:01:05.205Z] 03:01:05     INFO - Entering setup bound 
[task 2025-02-27T03:01:05.205Z] 03:01:05     INFO - Leaving setup bound 
[task 2025-02-27T03:01:05.205Z] 03:01:05     INFO - Entering test bound test_browser_remains_open_after_closing_last_profiles_tab
[task 2025-02-27T03:01:05.205Z] 03:01:05     INFO - Buffered messages finished
[task 2025-02-27T03:01:05.205Z] 03:01:05     INFO - TEST-UNEXPECTED-FAIL | browser/components/profiles/tests/browser/browser_test_last_tab.js | The current uri is 'about:newtab' and the browser didn't close - Got "about:editprofile", expected "about:newtab"
[task 2025-02-27T03:01:05.205Z] 03:01:05     INFO - Stack trace:
[task 2025-02-27T03:01:05.205Z] 03:01:05     INFO - chrome://mochikit/content/browser-test.js:test_is:1654
[task 2025-02-27T03:01:05.205Z] 03:01:05     INFO - chrome://mochitests/content/browser/browser/components/profiles/tests/browser/browser_test_last_tab.js:test_browser_remains_open_after_closing_last_profiles_tab:58
[task 2025-02-27T03:01:05.205Z] 03:01:05     INFO - chrome://mochikit/content/browser-test.js:handleTask:1170
[task 2025-02-27T03:01:05.205Z] 03:01:05     INFO - chrome://mochikit/content/browser-test.js:_runTaskBasedTest:1242
[task 2025-02-27T03:01:05.205Z] 03:01:05     INFO - chrome://mochikit/content/browser-test.js:Tester_execTest:1383
[task 2025-02-27T03:01:05.205Z] 03:01:05     INFO - chrome://mochikit/content/browser-test.js:nextTest/<:1153
[task 2025-02-27T03:01:05.205Z] 03:01:05     INFO - chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:SimpleTest.waitForFocus/<:1058
[task 2025-02-27T03:01:05.205Z] 03:01:05     INFO - Not taking screenshot here: see the one that was previously logged
[task 2025-02-27T03:01:05.205Z] 03:01:05     INFO - TEST-UNEXPECTED-FAIL | browser/components/profiles/tests/browser/browser_test_last_tab.js | There is only 1 tab open - Got 2, expected 1
[task 2025-02-27T03:01:05.205Z] 03:01:05     INFO - Stack trace:
[task 2025-02-27T03:01:05.205Z] 03:01:05     INFO - chrome://mochikit/content/browser-test.js:test_is:1654
[task 2025-02-27T03:01:05.205Z] 03:01:05     INFO - chrome://mochitests/content/browser/browser/components/profiles/tests/browser/browser_test_last_tab.js:test_browser_remains_open_after_closing_last_profiles_tab:63
[task 2025-02-27T03:01:05.205Z] 03:01:05     INFO - chrome://mochikit/content/browser-test.js:handleTask:1170
[task 2025-02-27T03:01:05.205Z] 03:01:05     INFO - chrome://mochikit/content/browser-test.js:_runTaskBasedTest:1242
[task 2025-02-27T03:01:05.205Z] 03:01:05     INFO - chrome://mochikit/content/browser-test.js:Tester_execTest:1383
[task 2025-02-27T03:01:05.205Z] 03:01:05     INFO - chrome://mochikit/content/browser-test.js:nextTest/<:1153
[task 2025-02-27T03:01:05.205Z] 03:01:05     INFO - chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:SimpleTest.waitForFocus/<:1058
[task 2025-02-27T03:01:50.991Z] 03:01:50     INFO - Not taking screenshot here: see the one that was previously logged
[task 2025-02-27T03:01:50.992Z] 03:01:50     INFO - TEST-UNEXPECTED-FAIL | browser/components/profiles/tests/browser/browser_test_last_tab.js | Test timed out - 
[task 2025-02-27T03:01:50.993Z] 03:01:50     INFO - GECKO(1082) | Completed ShutdownLeaks collections in process 1082
[task 2025-02-27T03:01:50.993Z] 03:01:50     INFO - TEST-START | Shutdown
[task 2025-02-27T03:01:50.993Z] 03:01:50     INFO - Browser Chrome Test Summary
[task 2025-02-27T03:01:50.994Z] 03:01:50     INFO - Passed:  48
[task 2025-02-27T03:01:50.994Z] 03:01:50     INFO - Failed:  3
[task 2025-02-27T03:01:50.994Z] 03:01:50     INFO - Todo:    0
[task 2025-02-27T03:01:50.995Z] 03:01:50     INFO - Mode:    e10s
[task 2025-02-27T03:01:50.995Z] 03:01:50     INFO - *** End BrowserChrome Test Results ***
[task 2025-02-27T03:01:51.007Z] 03:01:51     INFO - GECKO(1082) | Exiting due to channel error.
[task 2025-02-27T03:01:51.007Z] 03:01:51     INFO - GECKO(1082) | Exiting due to channel error.
[task 2025-02-27T03:01:51.008Z] 03:01:51     INFO - GECKO(1082) | Exiting due to channel error.
[task 2025-02-27T03:01:51.008Z] 03:01:51     INFO - GECKO(1082) | Exiting due to channel error.
[task 2025-02-27T03:01:51.008Z] 03:01:51     INFO - GECKO(1082) | Exiting due to channel error.
[task 2025-02-27T03:01:51.009Z] 03:01:51     INFO - GECKO(1082) | Exiting due to channel error.
[task 2025-02-27T03:01:51.009Z] 03:01:51     INFO - GECKO(1082) | Exiting due to channel error.
[task 2025-02-27T03:01:51.043Z] 03:01:51     INFO - TEST-INFO | Main app process: exit 0
[task 2025-02-27T03:01:51.044Z] 03:01:51     INFO - TEST-UNEXPECTED-FAIL | browser/components/profiles/tests/browser/browser_test_last_tab.js | Application shut down (without crashing) in the middle of a test!
[task 2025-02-27T03:01:51.044Z] 03:01:51     INFO - TEST-INFO took 46393ms
[task 2025-02-27T03:01:51.044Z] 03:01:51     INFO - runtests.py | Application ran for: 0:01:03.204042
[task 2025-02-27T03:01:51.045Z] 03:01:51     INFO - zombiecheck | Reading PID log: /tmp/tmpphvd1r8dpidlog
[task 2025-02-27T03:01:51.045Z] 03:01:51     INFO - ==> process 1082 launched child process 1157
[task 2025-02-27T03:01:51.046Z] 03:01:51     INFO - zombiecheck | Checking for orphan process with PID: 1157
[task 2025-02-27T03:01:51.046Z] 03:01:51     INFO - Stopping web server
[task 2025-02-27T03:01:51.050Z] 03:01:51     INFO - Server shut down.
[task 2025-02-27T03:01:51.051Z] 03:01:51     INFO - Web server killed.
[task 2025-02-27T03:01:51.051Z] 03:01:51     INFO - Stopping web socket server
[task 2025-02-27T03:01:51.052Z] 03:01:51     INFO - Stopping ssltunnel
[task 2025-02-27T03:01:51.052Z] 03:01:51     INFO - Stopping gst for v4l2loopback
[task 2025-02-27T03:01:51.053Z] 03:01:51  WARNING - leakcheck | refcount logging is off, so leaks can't be detected!
[task 2025-02-27T03:01:51.053Z] 03:01:51     INFO - runtests.py | Running tests: end.
[task 2025-02-27T03:01:51.093Z] 03:01:51     INFO - Buffered messages finished
[task 2025-02-27T03:01:51.093Z] 03:01:51     INFO -  TEST-INFO | checking window state
[task 2025-02-27T03:01:51.094Z] 03:01:51     INFO -  Browser Chrome Test Summary
[task 2025-02-27T03:01:51.094Z] 03:01:51     INFO -  	Passed: 48
[task 2025-02-27T03:01:51.094Z] 03:01:51     INFO -  	Failed: 3
[task 2025-02-27T03:01:51.095Z] 03:01:51     INFO -  	Todo: 0
[task 2025-02-27T03:01:51.095Z] 03:01:51     INFO -  	Mode: e10s
[task 2025-02-27T03:01:51.095Z] 03:01:51     INFO -  *** End BrowserChrome Test Results ***
[task 2025-02-27T03:01:51.096Z] 03:01:51     INFO - Buffered messages finished
[task 2025-02-27T03:01:51.096Z] 03:01:51     INFO - SUITE-END | took 63s
[task 2025-02-27T03:01:51.097Z] 03:01:51     INFO - SUITE-START | Running 1 tests
[task 2025-02-27T03:01:51.098Z] 03:01:51     INFO - :::
[task 2025-02-27T03:01:51.098Z] 03:01:51     INFO - ::: Test verification summary for:
[task 2025-02-27T03:01:51.099Z] 03:01:51     INFO - :::
[task 2025-02-27T03:01:51.099Z] 03:01:51     INFO - ::: browser/components/profiles/tests/browser/browser_test_last_tab.js
[task 2025-02-27T03:01:51.099Z] 03:01:51     INFO - :::
[task 2025-02-27T03:01:51.100Z] 03:01:51     INFO - ::: 1. Run each test 10 times in one browser. : FAIL
[task 2025-02-27T03:01:51.101Z] 03:01:51     INFO - ::: 2. Run each test 5 times in a new browser each time. : not run / incomplete
[task 2025-02-27T03:01:51.101Z] 03:01:51     INFO - ::: 3. Run each test 10 times in one browser, in chaos mode. : not run / incomplete
[task 2025-02-27T03:01:51.101Z] 03:01:51     INFO - ::: 4. Run each test 5 times in a new browser each time, in chaos mode. : not run / incomplete
[task 2025-02-27T03:01:51.102Z] 03:01:51     INFO - :::
[task 2025-02-27T03:01:51.102Z] 03:01:51     INFO - ::: Test verification FAILED!
[task 2025-02-27T03:01:51.102Z] 03:01:51     INFO - :::
[task 2025-02-27T03:01:51.102Z] 03:01:51     INFO - Buffered messages finished
[task 2025-02-27T03:01:51.103Z] 03:01:51     INFO - SUITE-END | took 0s
[task 2025-02-27T03:01:51.126Z] 03:01:51     INFO - Return code: 0
[task 2025-02-27T03:01:51.126Z] 03:01:51  WARNING - Got 4 unexpected statuses
[task 2025-02-27T03:01:51.126Z] 03:01:51     INFO - TinderboxPrint: mochitest-mochitest-browser-chrome<br/>8/<em class="testfail">4</em>/0
[task 2025-02-27T03:01:51.126Z] 03:01:51  WARNING - setting return code to 1
[task 2025-02-27T03:01:51.126Z] 03:01:51  WARNING - TinderboxPrint: Per-test run of .../browser/browser_test_last_tab.js<br/>: WARNING
[task 2025-02-27T03:01:51.126Z] 03:01:51     INFO - Per-test suites: {}
[task 2025-02-27T03:01:51.126Z] 03:01:51     INFO - Per-test suites: {}
[task 2025-02-27T03:01:51.127Z] 03:01:51     INFO - Running post-action listener: _package_coverage_data
[task 2025-02-27T03:01:51.127Z] 03:01:51     INFO - Running post-action listener: _resource_record_post_action
[task 2025-02-27T03:01:51.127Z] 03:01:51     INFO - Running post-action listener: process_java_coverage_data
[task 2025-02-27T03:01:51.127Z] 03:01:51     INFO - [mozharness: 2025-02-27 03:01:51.127235Z] Finished run-tests step (success)
[task 2025-02-27T03:01:51.127Z] 03:01:51     INFO - [mozharness: 2025-02-27 03:01:51.127286Z] Running uninstall step.
[task 2025-02-27T03:01:51.127Z] 03:01:51     INFO - Running pre-action listener: _resource_record_pre_action
[task 2025-02-27T03:01:51.127Z] 03:01:51     INFO - Running main action method: uninstall
[task 2025-02-27T03:01:51.127Z] 03:01:51     INFO - Skipping uninstall for non-MSIX test
[task 2025-02-27T03:01:51.127Z] 03:01:51     INFO - Running post-action listener: _resource_record_post_action
[task 2025-02-27T03:01:51.127Z] 03:01:51     INFO - [mozharness: 2025-02-27 03:01:51.127501Z] Finished uninstall step (success)
[task 2025-02-27T03:01:51.127Z] 03:01:51     INFO - Running post-run listener: _resource_record_post_run
[task 2025-02-27T03:01:51.199Z] 03:01:51     INFO - Validating Perfherder data against /builds/worker/workspace/mozharness/external_tools/performance-artifact-schema.json
[task 2025-02-27T03:01:51.201Z] 03:01:51     INFO - PERFHERDER_DATA: {"framework": {"name": "job_resource_usage"}, "suites": [{"name": ".overall", "extraOptions": ["e10s", "taskcluster-projects/887720501152/machineTypes/c2-standard-4"], "subtests": [{"name": "cpu_percent", "value": 21.10620567375885}, {"name": "io_write_bytes", "value": 481439744}, {"name": "io.read_bytes", "value": 0}, {"name": "io_write_time", "value": 399796}, {"name": "io_read_time", "value": 0}]}, {"name": ".start-pulseaudio", "subtests": [{"name": "time", "value": 0.0211561599999186}, {"name": "cpu_percent", "value": 0}]}, {"name": ".install", "subtests": [{"name": "time", "value": 5.720319052999912}, {"name": "cpu_percent", "value": 25.454910714285717}]}, {"name": ".stage-files", "subtests": [{"name": "time", "value": 0.0004614429999492131}, {"name": "cpu_percent", "value": 0}]}, {"name": ".run-tests", "subtests": [{"name": "time", "value": 64.82203475300003}, {"name": "cpu_percent", "value": 20.696406491499225}]}, {"name": ".uninstall", "subtests": [{"name": "time", "value": 0.0001386429999001848}, {"name": "cpu_percent", "value": 0}]}]}
[task 2025-02-27T03:01:51.201Z] 03:01:51     INFO - Total resource usage - Wall time: 71s; CPU: Can't collect data; Read bytes: 0; Write bytes: 481439744; Read time: 0; Write time: 399796
[task 2025-02-27T03:01:51.201Z] 03:01:51     INFO - TinderboxPrint: I/O read bytes / time<br/>0 / 0
[task 2025-02-27T03:01:51.201Z] 03:01:51     INFO - TinderboxPrint: I/O write bytes / time<br/>481,439,744 / 399,796
[task 2025-02-27T03:01:51.201Z] 03:01:51     INFO - TinderboxPrint: CPU idle<br/>218.1 (77.7%)
[task 2025-02-27T03:01:51.202Z] 03:01:51     INFO - TinderboxPrint: CPU iowait<br/>3.9 (1.4%)
[task 2025-02-27T03:01:51.202Z] 03:01:51     INFO - TinderboxPrint: CPU system<br/>4.2 (1.5%)
[task 2025-02-27T03:01:51.202Z] 03:01:51     INFO - TinderboxPrint: CPU user<br/>54.5 (19.4%)
[task 2025-02-27T03:01:51.202Z] 03:01:51     INFO - TinderboxPrint: Swap in / out<br/>0 / 0
[task 2025-02-27T03:01:51.202Z] 03:01:51     INFO - start-pulseaudio - Wall time: 0s; CPU: Can't collect data; Read bytes: 0; Write bytes: 0; Read time: 0; Write time: 0
[task 2025-02-27T03:01:51.202Z] 03:01:51     INFO - install - Wall time: 6s; CPU: 25%; Read bytes: 0; Write bytes: 16740352; Read time: 0; Write time: 2508
[task 2025-02-27T03:01:51.203Z] 03:01:51     INFO - stage-files - Wall time: 0s; CPU: Can't collect data; Read bytes: 0; Write bytes: 0; Read time: 0; Write time: 0
[task 2025-02-27T03:01:51.206Z] 03:01:51     INFO - run-tests - Wall time: 65s; CPU: 21%; Read bytes: 0; Write bytes: 464699392; Read time: 0; Write time: 397288
[task 2025-02-27T03:01:51.207Z] 03:01:51     INFO - uninstall - Wall time: 0s; CPU: Can't collect data; Read bytes: 0; Write bytes: 0; Read time: 0; Write time: 0
[task 2025-02-27T03:01:51.326Z] 03:01:51  WARNING - returning nonzero exit status 1

Comment 1

[BugBot [:suhaib / :marco/ :calixte]]

:niklas, since you are the author of the regressor, bug 1934942, could you take a look?

For more information, please visit BugBot documentation.

Comment 2

[BugBot [:suhaib / :marco/ :calixte]]

Set release status flags based on info from the regressing bug 1934942

Comment 3

[Intermittent Failures Robot]

Summary

21 failures in 4564 pushes (0.005 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• mozilla-central: 7
• autoland: 14

Platform and build breakdown:

• linux1804-64-qr: 6
  • debug: 3
  • opt: 3
• linux1804-64-tsan-qr: 2
  • opt: 2
• macosx1015-64-qr: 1
  • debug: 1
• macosx1100-aarch64-qr: 5
  • opt: 5
• windows10-64: 5
  • asan: 5
• windows11-64-24h2: 2
  • debug: 2

Table

	msix	no_variant	spi-nw	swr
linux1804-64-qr--/debug			3
linux1804-64-qr--/opt			2	1
linux1804-64-tsan-qr--/opt				2
macosx1015-64-qr--/debug			1
macosx1100-aarch64-qr--/opt			5
windows10-64--/asan		5
windows11-64-24h2--/debug	1		1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1950795&startday=2025-02-24&endday=2025-03-02&tree=all

Comment 4

[BugBot [:suhaib / :marco/ :calixte]]

Set release status flags based on info from the regressing bug 1934942

Comment 5

[Intermittent Failures Robot]

Summary

18 failures in 922 pushes (0.02 failures/push) were associated with this bug yesterday.

Repository breakdown:

• autoland: 9
• mozilla-central: 8
• try: 1

Platform and build breakdown:

• linux1804-64-qr: 5
  • debug: 3
  • opt: 2
• macosx1015-64-qr: 1
  • debug: 1
• macosx1100-aarch64-qr: 7
  • opt: 7
• windows10-64: 2
  • asan: 2
• windows11-64: 1
  • asan: 1
• windows11-64-24h2: 2
  • debug: 2

Table

	msix	no_variant	spi-nw	swr
linux1804-64-qr--/debug			1	2
linux1804-64-qr--/opt			1	1
macosx1015-64-qr--/debug			1
macosx1100-aarch64-qr--/opt		4	3
windows10-64--/asan		2
windows11-64--/asan		1
windows11-64-24h2--/debug	1	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1950795&startday=2025-03-04&endday=2025-03-04&tree=all

Comment 6

[Intermittent Failures Robot]

Summary

21 failures in 834 pushes (0.025 failures/push) were associated with this bug yesterday.

Repository breakdown:

• mozilla-beta: 4
• try: 6
• autoland: 6
• mozilla-central: 5

Platform and build breakdown:

• linux1804-64-devedition-qr: 2
  • opt: 2
• linux1804-64-qr: 6
  • debug: 3
  • opt: 3
• linux1804-64-tsan-qr: 1
  • opt: 1
• macosx1015-64-qr: 3
  • debug: 2
  • opt: 1
• macosx1100-aarch64-qr: 5
  • opt: 5
• windows11-64: 1
  • asan: 1
• windows11-64-24h2: 3
  • debug: 3

Table

	msix	no_variant	spi-nw	swr
linux1804-64-devedition-qr--/opt				2
linux1804-64-qr--/debug			2	1
linux1804-64-qr--/opt			2	1
linux1804-64-tsan-qr--/opt				1
macosx1015-64-qr--/debug		1	1
macosx1015-64-qr--/opt		1
macosx1100-aarch64-qr--/opt		4	1
windows11-64--/asan		1
windows11-64-24h2--/debug	2	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1950795&startday=2025-03-05&endday=2025-03-05&tree=all

Comment 7

[Intermittent Failures Robot]

Summary

23 failures in 939 pushes (0.024 failures/push) were associated with this bug yesterday.

Repository breakdown:

• mozilla-beta: 10
• autoland: 11
• mozilla-central: 2

Platform and build breakdown:

• linux1804-64-asan-qr: 1
  • opt: 1
• linux1804-64-devedition-qr: 1
  • opt: 1
• linux1804-64-qr: 9
  • opt: 3
  • debug: 6
• linux1804-64-tsan-qr: 2
  • opt: 2
• macosx1100-aarch64-qr: 5
  • opt: 5
• windows11-32-24h2: 1
  • debug: 1
• windows11-64: 2
  • asan: 2
• windows11-64-24h2: 2
  • debug: 2

Table

	no_variant	spi-nw	swr
linux1804-64-asan-qr--/opt			1
linux1804-64-devedition-qr--/opt			1
linux1804-64-qr--/opt		1	2
linux1804-64-qr--/debug		4	2
linux1804-64-tsan-qr--/opt			2
macosx1100-aarch64-qr--/opt	4	1
windows11-32-24h2--/debug	1
windows11-64--/asan	2
windows11-64-24h2--/debug	1	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1950795&startday=2025-03-06&endday=2025-03-06&tree=all

Comment 8

[Intermittent Failures Robot]

Summary

111 failures in 4009 pushes (0.028 failures/push) were associated with this bug in the last 7 days.

This is the #7 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: 20
• try: 12
• autoland: 51
• mozilla-central: 28

Platform and build breakdown:

• linux1804-64-asan-qr: 1
  • opt: 1
• linux1804-64-devedition-qr: 3
  • opt: 3
• linux1804-64-qr: 35
  • debug: 22
  • opt: 13
• linux1804-64-tsan-qr: 4
  • opt: 4
• macosx1015-64-qr: 9
  • debug: 5
  • opt: 4
• macosx1100-aarch64-qr: 34
  • opt: 34
• windows10-64: 3
  • asan: 3
• windows11-32-24h2: 1
  • debug: 1
• windows11-64: 11
  • asan: 11
• windows11-64-24h2: 10
  • debug: 10

Table

	a11y-checks-swr	msix	no_variant	spi-nw	swr
linux1804-64-asan-qr--/opt					1
linux1804-64-devedition-qr--/opt					3
linux1804-64-qr--/debug				9	13
linux1804-64-qr--/opt	1			6	6
linux1804-64-tsan-qr--/opt					4
macosx1015-64-qr--/debug			1	4
macosx1015-64-qr--/opt			3	1
macosx1100-aarch64-qr--/opt			19	15
windows10-64--/asan			3
windows11-32-24h2--/debug			1
windows11-64--/asan			11
windows11-64-24h2--/debug		5	3	2

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1950795&startday=2025-03-03&endday=2025-03-09&tree=all

Comment 9

[Intermittent Failures Robot]

Summary

19 failures in 942 pushes (0.02 failures/push) were associated with this bug yesterday.

Repository breakdown:

• mozilla-central: 7
• mozilla-beta: 5
• autoland: 7

Platform and build breakdown:

• linux1804-64-qr: 8
  • debug: 4
  • opt: 4
• linux1804-64-tsan-qr: 3
  • opt: 3
• macosx1015-64-qr: 3
  • debug: 3
• macosx1100-aarch64-qr: 3
  • opt: 3
• windows11-32-24h2: 1
  • debug: 1
• windows11-64: 1
  • asan: 1

Table

	a11y-checks-swr	no_variant	spi-nw	swr
linux1804-64-qr--/debug			1	3
linux1804-64-qr--/opt	1		2	1
linux1804-64-tsan-qr--/opt				3
macosx1015-64-qr--/debug		2	1
macosx1100-aarch64-qr--/opt		2	1
windows11-32-24h2--/debug		1
windows11-64--/asan		1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1950795&startday=2025-03-11&endday=2025-03-11&tree=all

Comment 10

[Intermittent Failures Robot]

Summary

20 failures in 876 pushes (0.023 failures/push) were associated with this bug yesterday.

Repository breakdown:

• try: 3
• autoland: 9
• mozilla-beta: 5
• mozilla-central: 3

Platform and build breakdown:

• linux1804-64-devedition-qr: 2
  • opt: 2
• linux1804-64-qr: 6
  • debug: 6
• macosx1015-64-qr: 6
  • opt: 2
  • debug: 4
• macosx1100-aarch64-qr: 3
  • opt: 3
• windows10-64: 2
  • asan: 2
• windows11-64-24h2: 1
  • debug: 1

Table

	msix	no_variant	spi-nw	swr
linux1804-64-devedition-qr--/opt				2
linux1804-64-qr--/debug			6
macosx1015-64-qr--/opt		1	1
macosx1015-64-qr--/debug		3	1
macosx1100-aarch64-qr--/opt		1	2
windows10-64--/asan		2
windows11-64-24h2--/debug	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1950795&startday=2025-03-12&endday=2025-03-12&tree=all

Comment 11

[Intermittent Failures Robot]

Summary

18 failures in 1091 pushes (0.016 failures/push) were associated with this bug yesterday.

Repository breakdown:

• mozilla-beta: 14
• autoland: 3
• try: 1

Platform and build breakdown:

• linux1804-64-asan-qr: 1
  • opt: 1
• linux1804-64-devedition-qr: 1
  • opt: 1
• linux1804-64-qr: 3
  • debug: 3
• macosx1100-aarch64-qr: 8
  • opt: 8
• windows10-64: 3
  • asan: 3
• windows11-32-24h2: 1
  • debug: 1
• windows11-64-24h2: 1
  • debug: 1

Table

	msix	no_variant	spi-nw	swr
linux1804-64-asan-qr--/opt				1
linux1804-64-devedition-qr--/opt				1
linux1804-64-qr--/debug			1	2
macosx1100-aarch64-qr--/opt		6	2
windows10-64--/asan		3
windows11-32-24h2--/debug		1
windows11-64-24h2--/debug	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1950795&startday=2025-03-13&endday=2025-03-13&tree=all

Comment 12

[Intermittent Failures Robot]

Summary

16 failures in 788 pushes (0.02 failures/push) were associated with this bug yesterday.

Repository breakdown:

• try: 2
• autoland: 8
• mozilla-central: 2
• mozilla-beta: 4

Platform and build breakdown:

• linux1804-64-devedition-qr: 1
  • opt: 1
• linux1804-64-qr: 5
  • debug: 3
  • opt: 2
• macosx1015-64-qr: 5
  • debug: 2
  • opt: 3
• macosx1100-aarch64-qr: 1
  • opt: 1
• windows10-64: 1
  • asan: 1
• windows11-32-24h2: 1
  • debug: 1
• windows11-64: 2
  • asan: 2

Table

	no_variant	spi-nw	swr
linux1804-64-devedition-qr--/opt			1
linux1804-64-qr--/debug		1	2
linux1804-64-qr--/opt			2
macosx1015-64-qr--/debug	1	1
macosx1015-64-qr--/opt	1	2
macosx1100-aarch64-qr--/opt		1
windows10-64--/asan	1
windows11-32-24h2--/debug	1
windows11-64--/asan	2

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1950795&startday=2025-03-14&endday=2025-03-14&tree=all

Comment 13

[Intermittent Failures Robot]

Summary

91 failures in 4826 pushes (0.019 failures/push) were associated with this bug in the last 7 days.

This is the #15 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: 31
• try: 8
• autoland: 39
• mozilla-central: 13

Platform and build breakdown:

• linux1804-64-asan-qr: 1
  • opt: 1
• linux1804-64-devedition-qr: 5
  • opt: 5
• linux1804-64-qr: 28
  • debug: 22
  • opt: 6
• linux1804-64-tsan-qr: 3
  • opt: 3
• macosx1015-64-qr: 16
  • debug: 10
  • opt: 6
• macosx1100-aarch64-qr: 21
  • opt: 21
• windows10-64: 6
  • asan: 6
• windows11-32-24h2: 3
  • debug: 3
• windows11-64: 5
  • asan: 5
• windows11-64-24h2: 3
  • debug: 3

Table

	a11y-checks-swr	msix	no_variant	spi-nw	swr
linux1804-64-asan-qr--/opt					1
linux1804-64-devedition-qr--/opt					5
linux1804-64-qr--/debug				12	10
linux1804-64-qr--/opt	1			2	3
linux1804-64-tsan-qr--/opt					3
macosx1015-64-qr--/debug			7	3
macosx1015-64-qr--/opt			2	4
macosx1100-aarch64-qr--/opt			11	10
windows10-64--/asan			6
windows11-32-24h2--/debug			3
windows11-64--/asan			5
windows11-64-24h2--/debug		3

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1950795&startday=2025-03-10&endday=2025-03-16&tree=all

Comment 14

[Intermittent Failures Robot]

Summary

16 failures in 809 pushes (0.02 failures/push) were associated with this bug yesterday.

Repository breakdown:

• mozilla-beta: 9
• autoland: 4
• mozilla-central: 3

Platform and build breakdown:

• linux1804-64-qr: 5
  • debug: 2
  • opt: 3
• linux1804-64-tsan-qr: 1
  • opt: 1
• macosx1015-64-qr: 2
  • debug: 1
  • opt: 1
• macosx1100-aarch64-qr: 7
  • opt: 7
• windows11-64: 1
  • asan: 1

Table

	no_variant	spi-nw	swr
linux1804-64-qr--/debug			2
linux1804-64-qr--/opt		1	2
linux1804-64-tsan-qr--/opt			1
macosx1015-64-qr--/debug	1
macosx1015-64-qr--/opt	1
macosx1100-aarch64-qr--/opt	6	1
windows11-64--/asan	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1950795&startday=2025-03-17&endday=2025-03-17&tree=all

Comment 15

[Intermittent Failures Robot]

Summary

17 failures in 989 pushes (0.017 failures/push) were associated with this bug yesterday.

Repository breakdown:

• autoland: 10
• mozilla-beta: 4
• try: 1
• mozilla-central: 2

Platform and build breakdown:

• linux1804-64-asan-qr: 1
  • opt: 1
• linux1804-64-devedition-qr: 1
  • opt: 1
• linux1804-64-qr: 5
  • debug: 2
  • opt: 3
• macosx1015-64-qr: 4
  • debug: 3
  • opt: 1
• macosx1100-aarch64-qr: 5
  • opt: 5
• windows10-64: 1
  • asan: 1

Table

	no_variant	spi-nw	swr
linux1804-64-asan-qr--/opt			1
linux1804-64-devedition-qr--/opt			1
linux1804-64-qr--/debug		1	1
linux1804-64-qr--/opt			3
macosx1015-64-qr--/debug	1	2
macosx1015-64-qr--/opt		1
macosx1100-aarch64-qr--/opt		5
windows10-64--/asan	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1950795&startday=2025-03-20&endday=2025-03-20&tree=all

Comment 16

[Intermittent Failures Robot]

Summary

94 failures in 5035 pushes (0.019 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:

• autoland: 48
• try: 6
• mozilla-beta: 25
• mozilla-central: 15

Platform and build breakdown:

• linux1804-64-asan-qr: 3
  • opt: 3
• linux1804-64-devedition-qr: 2
  • opt: 2
• linux1804-64-qr: 28
  • debug: 16
  • opt: 12
• linux1804-64-tsan-qr: 2
  • opt: 2
• macosx1015-64-qr: 12
  • opt: 6
  • debug: 6
• macosx1100-aarch64-qr: 26
  • opt: 26
• windows10-64: 1
  • asan: 1
• windows11-32-24h2: 2
  • debug: 2
• windows11-64: 1
  • asan: 1
• windows11-64-24h2: 17
  • debug: 8
  • asan: 9

Table

	msix	no_variant	spi-nw	swr
linux1804-64-asan-qr--/opt				3
linux1804-64-devedition-qr--/opt				2
linux1804-64-qr--/debug			9	7
linux1804-64-qr--/opt			4	8
linux1804-64-tsan-qr--/opt				2
macosx1015-64-qr--/opt		2	4
macosx1015-64-qr--/debug		2	4
macosx1100-aarch64-qr--/opt		15	11
windows10-64--/asan		1
windows11-32-24h2--/debug		2
windows11-64--/asan		1
windows11-64-24h2--/debug	3	5
windows11-64-24h2--/asan		9

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1950795&startday=2025-03-17&endday=2025-03-23&tree=all

Comment 17

[Intermittent Failures Robot]

Repository breakdown:

• try: 2
• autoland: 12
• mozilla-central: 9
• mozilla-beta: 3

Table

	no_variant	spi-nw	swr
linux1804-64-asan-qr--/opt			1
linux1804-64-qr--/opt		3
linux1804-64-qr--/debug		2
linux1804-64-tsan-qr--/opt			2
macosx1015-64-qr--/opt		1
macosx1015-64-qr--/debug	1	2
macosx1100-aarch64-qr--/opt	4	6
windows11-64-24h2--/asan	4

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1950795&startday=2025-03-24&endday=2025-03-24&tree=all

Comment 18

[Intermittent Failures Robot]

Repository breakdown:

• autoland: 13
• mozilla-central: 4

Table

	no_variant	spi-nw	swr
linux1804-64-asan-qr--/opt			1
linux1804-64-qr--/debug		3
linux1804-64-qr--/opt		3
macosx1015-64-qr--/debug	1	1
macosx1015-64-qr--/opt	1
macosx1100-aarch64-qr--/opt	1	2
windows11-64-24h2--/asan	4

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1950795&startday=2025-03-26&endday=2025-03-26&tree=all

Comment 19

[Intermittent Failures Robot]

Repository breakdown:

• autoland: 10
• mozilla-central: 5
• try: 2

Table

	msix	no_variant	spi-nw	swr
linux1804-64-qr--/opt			5
linux1804-64-qr--/debug			1
linux1804-64-tsan-qr--/opt				2
macosx1015-64-qr--/debug			1
macosx1100-aarch64-qr--/opt			1
windows11-32-24h2--/debug		2
windows11-64-24h2--/debug	1		1
windows11-64-24h2--/asan		3

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1950795&startday=2025-03-27&endday=2025-03-27&tree=all

Comment 20

[Cristina Horotan [:chorotan]]

There have been 89 total failures in the last 7 days.
There are:

• 2 failures on linux1804-64-asan-qr opt
• 21 failures on linux1804-64-qr opt and debug
• 5 failures on linux1804-64-shippable-qr opt
• 6 failures on linux1804-64-tsan-qr opt
• 10 failures on macosx1015-64-qr opt and debug
• 2 failures on macosx1015-64-shippable-qr opt
• 15 failures on macosx1100-aarch64-shippable-qr opt
• 5 failures on windows11-32-24h2 debug
• 23 failures on windows11-64-24h2 asan and deug

Recent failure log.

Niklas, as you are the regressor of this bug, can you please take a look? Soon this test will be disabled for frequent failures.
Thank you.

Comment 21

[Intermittent Failures Robot]

Repository breakdown:

• autoland: 10
• mozilla-central: 3
• try: 2

Table

	no_variant	spi-nw	swr
linux1804-64-qr--/opt		2
linux1804-64-qr--/debug		1	1
linux1804-64-tsan-qr--/opt			2
macosx1015-64-qr--/opt	1
macosx1100-aarch64-qr--/opt	1	1
windows11-32-24h2--/debug	1
windows11-64-24h2--/asan	5

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1950795&startday=2025-03-28&endday=2025-03-28&tree=all

Comment 22

[Intermittent Failures Robot]

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:

• autoland: 54
• try: 10
• mozilla-central: 28
• mozilla-beta: 5

Table

	msix	no_variant	spi-nw	swr
linux1804-64-asan-qr--/opt				3
linux1804-64-qr--/opt			13
linux1804-64-qr--/debug			7	2
linux1804-64-tsan-qr--/opt				8
macosx1015-64-qr--/debug		3	4
macosx1015-64-qr--/opt		2	2
macosx1100-aarch64-qr--/opt		9	14
windows11-32-24h2--/debug		5
windows11-64-24h2--/debug	2	1	1
windows11-64-24h2--/asan		21

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1950795&startday=2025-03-24&endday=2025-03-30&tree=all

Comment 23

[Intermittent Failures Robot]

17 failures were associated with this bug yesterday.

Repository breakdown:

• autoland: 8
• try: 2
• mozilla-beta: 3
• mozilla-central: 4

Table

	msix	no_variant	spi-nw	swr
linux1804-64-qr--/debug			1	1
linux1804-64-qr--/opt			1
linux1804-64-tsan-qr--/opt				2
macosx1015-64-qr--/debug			1
macosx1015-64-qr--/opt		1
macosx1100-aarch64-qr--/opt		2	3
windows11-64-24h2--/asan		4
windows11-64-24h2--/opt	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1950795&startday=2025-04-02&endday=2025-04-02&tree=all

Comment 24

[amarc]

Attachment: Bug 1950795 - Disable browser_test_last_tab.js on linux/mac/win for frequent failures r=#intermittent-reviewers

Comment 25

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/a113c12c1798
Disable browser_test_last_tab.js on linux/mac/win for frequent failures r=intermittent-reviewers,jmaher DONTBUILD

Comment 26

[Serban Stanca [:SerbanS]]

https://hg.mozilla.org/mozilla-central/rev/a113c12c1798

Comment 27

[Intermittent Failures Robot]

26 failures were associated with this bug yesterday.

Repository breakdown:

• try: 4
• autoland: 9
• mozilla-beta: 9
• mozilla-central: 4

Table

	msix	no_variant	spi-nw	swr
linux1804-64-qr--/debug			1
linux1804-64-qr--/opt			1
linux1804-64-tsan-qr--/opt				2
macosx1015-64-devedition-qr--/opt		1
macosx1015-64-qr--/debug		1	2
macosx1015-64-qr--/opt			1
macosx1100-aarch64-qr--/opt		3	2
windows11-32-24h2--/opt		1
windows11-32-24h2--/debug		2
windows11-64-24h2--/debug	2	1	1
windows11-64-24h2--/asan		5

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1950795&startday=2025-04-03&endday=2025-04-03&tree=all

Comment 28

[Intermittent Failures Robot]

80 failures were associated with this bug in the last 7 days.
This is the #11 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: 25
• autoland: 38
• try: 6
• mozilla-central: 11

Table

	a11y-checks-swr	msix	no_variant	spi-nw	swr
linux1804-64-devedition-qr--/opt					1
linux1804-64-qr--/debug				2	1
linux1804-64-qr--/opt	1			5
linux1804-64-tsan-qr--/opt					8
macosx1015-64-devedition-qr--/opt			2
macosx1015-64-qr--/debug			2	4
macosx1015-64-qr--/opt			1	2
macosx1100-aarch64-qr--/opt			9	9
windows11-32-24h2--/debug			4
windows11-32-24h2--/opt			1
windows11-64-24h2--/debug		5	2	3
windows11-64-24h2--/asan			17
windows11-64-24h2--/opt		1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1950795&startday=2025-03-31&endday=2025-04-06&tree=all

Comment 29

[Intermittent Failures Robot]

41 failures were associated with this bug in the last 7 days.
This is the #38 most frequent failure this week.

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-release: 12
• mozilla-beta: 23
• autoland: 4
• mozilla-central: 1
• try: 1

Table

	msix	no_variant	spi-nw	swr
linux1804-64-qr--/opt				2
linux1804-64-tsan-qr--/opt				2
macosx1100-aarch64-qr--/opt		16
windows10-64--/asan		2
windows11-32-24h2--/opt		3
windows11-32-24h2--/debug		1
windows11-64-24h2--/debug	4	3
windows11-64-24h2--/asan		5
windows11-64-24h2--/opt	1		2

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1950795&startday=2025-04-07&endday=2025-04-13&tree=all

Comment 30

[Intermittent Failures Robot]

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

Repository breakdown:

• mozilla-beta: 19
• mozilla-release: 2
• autoland: 2
• try: 1
• mozilla-central: 1

Table

	msix	no_variant	spi-nw	swr
linux1804-64-tsan-qr--/opt				3
macosx1100-aarch64-qr--/opt		10
windows10-64--/asan		1
windows11-32-24h2--/debug		1
windows11-32-24h2--/opt		1
windows11-64-24h2--/debug	1
windows11-64-24h2--/asan		6
windows11-64-24h2--/opt		1	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1950795&startday=2025-04-14&endday=2025-04-20&tree=all

Comment 31

[Dave Townsend [:mossop]]

Attachment: Bug 1950795: Fix race conditions in browser_test_last_tab.js. r=#profiles-reviewers!

Comment 32

[Intermittent Failures Robot]

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

Repository breakdown:

• mozilla-beta: 2
• autoland: 2
• mozilla-release: 1

Table

	no_variant
macosx1015-64-devedition-qr--/opt	1
windows11-32-24h2--/debug	1
windows11-32-24h2--/opt	1
windows11-64-24h2--/asan	1
windows11-64-24h2--/opt	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1950795&startday=2025-04-21&endday=2025-04-27&tree=all

Comment 33

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/ba94011531f4
Fix race conditions in browser_test_last_tab.js. r=profiles-reviewers,niklas

Comment 34

[Narcis Beleuzu [:NarcisB]]

https://hg.mozilla.org/mozilla-central/rev/ba94011531f4

Comment 35

[BugBot [:suhaib / :marco/ :calixte]]

The patch landed in nightly and beta is affected.
:mossop, 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-firefox139 to wontfix.

For more information, please visit BugBot documentation.

Comment 36

[Dave Townsend [:mossop]]

Attachment: Bug 1950795: Fix race conditions in browser_test_last_tab.js. r=#profiles-reviewers!

Original Revision: https://phabricator.services.mozilla.com/D246597

Comment 37

[Phabricator Automation]

firefox-beta Uplift Approval Request

• User impact if declined: None
• Code covered by automated testing: yes
• Fix verified in Nightly: yes
• Needs manual QE test: no
• Steps to reproduce for manual QE testing: N/A
• Risk associated with taking this patch: None
• Explanation of risk level: This is a test only fix
• String changes made/needed: None
• Is Android affected?: no

Comment 38

[Pulsebot]

https://hg.mozilla.org/releases/mozilla-beta/rev/27c4982bfd05

Comment 39

[Intermittent Failures Robot]

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

Repository breakdown:

• mozilla-release: 6
• autoland: 1

Table

	no_variant	swr
linux1804-64-tsan-qr--/opt		1
macosx1100-aarch64-qr--/opt	4
macosx1470-64--/opt	1
windows11-64-24h2--/opt	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1950795&startday=2025-04-28&endday=2025-05-04&tree=all

Comment 40

[Intermittent Failures Robot]

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

Repository breakdown:

• mozilla-release: 4

Table

	asan	debug	no_variant	opt	swr	tsan
linux1804-x86_64/tsan					1
macosx1100-aarch64/opt			2
windows11-x86_64/asan			1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1950795&startday=2025-05-05&endday=2025-05-11&tree=all

Comment 41

[Intermittent Failures Robot]

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

Repository breakdown:

• mozilla-release: 2
• autoland: 1

Table

	asan	debug	no_variant	opt	spi-nw	swr	tsan
linux1804-x86_64/tsan						1
macosx1015-x86_64/opt					1
macosx1100-aarch64/opt			1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1950795&startday=2025-05-12&endday=2025-05-18&tree=all

Comment 42

[Intermittent Failures Robot]

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

Repository breakdown:

• mozilla-release: 1

Table

	no_variant
macosx1100-aarch64/opt	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1950795&startday=2025-05-19&endday=2025-05-25&tree=all