Bug: Intermittent browser/components/sessionstore/test/browser_pinned_tabs.js | single tracking bug
Status: NEW
Priority: P5
Created: 2025-03-05 14:55:01+00:00
Resolved: 2025-03-05 14:55:01+00:00

**Filed by:** chorotan [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer?job_id=497639068&repo=autoland
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/GSim2yXjQN2C_k4t8ZxJkg/runs/0/artifacts/public/logs/live_backing.log

---
```
task 2025-03-05T13:16:46.205Z] 13:16:46     INFO - TEST-PASS | browser/components/sessionstore/test/browser_pinned_tabs.js | Third tab has matching URL - 
[task 2025-03-05T13:16:46.206Z] 13:16:46     INFO - running 
[task 2025-03-05T13:16:46.206Z] 13:16:46     INFO - Leaving test bound test_mixed_pinned_unpinned
[task 2025-03-05T13:16:46.207Z] 13:16:46     INFO - Entering test bound test_pinned_tab_dataloss
[task 2025-03-05T13:16:46.208Z] 13:16:46     INFO - Buffered messages logged at 13:15:58
[task 2025-03-05T13:16:46.208Z] 13:16:46     INFO - Saw load for https://www.example.com/
[task 2025-03-05T13:16:46.208Z] 13:16:46     INFO - running 
[task 2025-03-05T13:16:46.209Z] 13:16:46     INFO - Saw load for https://www.example.com/
[task 2025-03-05T13:16:46.210Z] 13:16:46     INFO - Saw load for https://www.example.com/
[task 2025-03-05T13:16:46.210Z] 13:16:46     INFO - Saw load for https://www.example.com/
[task 2025-03-05T13:16:46.211Z] 13:16:46     INFO - Saw load for https://www.example.com/
[task 2025-03-05T13:16:46.211Z] 13:16:46     INFO - Saw load for https://www.example.com/
[task 2025-03-05T13:16:46.212Z] 13:16:46     INFO - Saw load for https://www.example.com/
[task 2025-03-05T13:16:46.212Z] 13:16:46     INFO - Saw load for https://www.example.com/
[task 2025-03-05T13:16:46.213Z] 13:16:46     INFO - Saw load for https://www.example.com/
[task 2025-03-05T13:16:46.213Z] 13:16:46     INFO - Saw load for https://www.example.com/
[task 2025-03-05T13:16:46.213Z] 13:16:46     INFO - Saw load for https://www.example.com/
[task 2025-03-05T13:16:46.214Z] 13:16:46     INFO - Saw load for https://www.example.com/
[task 2025-03-05T13:16:46.215Z] 13:16:46     INFO - Saw load for https://www.example.com/
[task 2025-03-05T13:16:46.215Z] 13:16:46     INFO - Saw load for https://www.example.com/
[task 2025-03-05T13:16:46.216Z] 13:16:46     INFO - Saw load for https://www.example.com/
[task 2025-03-05T13:16:46.217Z] 13:16:46     INFO - Saw load for https://www.example.com/
[task 2025-03-05T13:16:46.217Z] 13:16:46     INFO - Saw load for https://www.example.com/
[task 2025-03-05T13:16:46.218Z] 13:16:46     INFO - Saw load for https://www.example.com/
[task 2025-03-05T13:16:46.219Z] 13:16:46     INFO - Console message: [JavaScript Error: "NS_ERROR_NOT_AVAILABLE: Component returned failure code: 0x80040111 (NS_ERROR_NOT_AVAILABLE) [nsIPropertyBag2.getPropertyAsAString]" {file: "resource://testing-common/BrowserTestUtils.sys.mjs" line: 2080}]
[task 2025-03-05T13:16:46.219Z] 13:16:46     INFO - observer@resource://testing-common/BrowserTestUtils.sys.mjs:2080:28
[task 2025-03-05T13:16:46.219Z] 13:16:46     INFO - 
[task 2025-03-05T13:16:46.220Z] 13:16:46     INFO - Buffered messages finished
task 2025-03-05T13:16:46.220Z] 13:16:46     INFO - TEST-UNEXPECTED-FAIL | browser/components/sessionstore/test/browser_pinned_tabs.js | Test timed out - 
[task 2025-03-05T13:16:46.220Z] 13:16:46     INFO - GECKO(8548) | Completed ShutdownLeaks collections in process 8280
[task 2025-03-05T13:16:46.221Z] 13:16:46     INFO - TEST-START | Shutdown
[task 2025-03-05T13:16:46.221Z] 13:16:46     INFO - Browser Chrome Test Summary
[task 2025-03-05T13:16:46.222Z] 13:16:46     INFO - Passed:  753
[task 2025-03-05T13:16:46.223Z] 13:16:46     INFO - Failed:  1
[task 2025-03-05T13:16:46.223Z] 13:16:46     INFO - Todo:    0
[task 2025-03-05T13:16:46.223Z] 13:16:46     INFO - Mode:    e10s
[task 2025-03-05T13:16:46.223Z] 13:16:46     INFO - *** End BrowserChrome Test Results ***
[task 2025-03-05T13:16:46.224Z] 13:16:46     INFO - GECKO(8548) | Exiting due to channel error.
[task 2025-03-05T13:16:46.225Z] 13:16:46     INFO - GECKO(8548) | Exiting due to channel error.
[task 2025-03-05T13:16:46.225Z] 13:16:46     INFO - TEST-INFO | Main app process: exit 0
[task 2025-03-05T13:16:46.226Z] 13:16:46     INFO - TEST-UNEXPECTED-FAIL | browser/components/sessionstore/test/browser_pinned_tabs.js | Application shut down (without crashing) in the middle of a test!
[task 2025-03-05T13:16:46.226Z] 13:16:46     INFO - TEST-INFO took 49100ms
[task 2025-03-05T13:16:46.226Z] 13:16:46     INFO - runtests.py | Application ran for: 0:03:10.734524
[task 2025-03-05T13:16:46.227Z] 13:16:46     INFO - zombiecheck | Reading PID log: C:\Users\task_174117454910499\AppData\Local\Temp\tmp9x9v14mlpidlog
[task 2025-03-05T13:16:46.228Z] 13:16:46     INFO - ==> process 8280 launched child process 1880 ("C:\Program Files\WindowsApps\Mozilla.MozillaFirefoxNightly_138.2503.509.0_x64__5x4grbbqzn2q4\VFS\ProgramFiles\MozillaFirefoxNightly Package Root\firefox.exe" -contentproc -parentBuildID 20250305094447 -prefsHandle 2160:26994 -prefMapHandle 2176:286576 -ipcHandle 2312 -initialChannelId {acbb3fc3-4eca-4a51-9032-855e5646b114} -parentPid 8280 -crashReporter "\\.\pipe\gecko-crash-server-pipe.8280" -appDir "C:\Program Files\WindowsApps\Mozilla.MozillaFirefoxNightly_138.2503.509.0_x64__5x4grbbqzn2q4\VFS\ProgramFiles\MozillaFirefoxNightly Package Root\browser" - 1 gpu)
[task 2025-03-05T13:16:46.229Z] 13:16:46     INFO - ==> process 8280 launched child process 6296 ("C:\Program Files\WindowsApps\Mozilla.MozillaFirefoxNightly_138.2503.509.0_x64__5x4grbbqzn2q4\VFS\ProgramFiles\MozillaFirefoxNightly Package Root\firefox.exe" -contentproc -isForBrowser -prefsHandle 3088:26821 -prefMapHandle 3092:286576 -jsInitHandle 3096:256972 -parentBuildID 20250305094447 -ipcHandle 3104 -initialChannelId {3762167b-efff-4855-a916-8f01d89eac73} -parentPid 8280 -crashReporter "\\.\pipe\gecko-crash-server-pipe.8280" -win32kLockedDown -appDir "C:\Program Files\WindowsApps\Mozilla.MozillaFirefoxNightly_138.2503.509.0_x64__5x4grbbqzn2q4\VFS\ProgramFiles\MozillaFirefoxNightly Package Root\browser" - 2 tab)
[task 2025-03-05T13:16:46.230Z] 13:16:46     INFO - ==> process 8280 launched child process 5340 ("C:\Program Files\WindowsApps\Mozilla.MozillaFirefoxNightly_138.2503.509.0_x64__5x4grbbqzn2q4\VFS\ProgramFiles\MozillaFirefoxNightly Package Root\firefox.exe" -contentproc -parentBuildID 20250305094447 -prefsHandle 3292:28405 -prefMapHandle 3368:286576 -ipcHandle 3376 -initialChannelId {6a045e3a-a7e2-4359-9a46-812eb34a1c72} -parentPid 8280 -crashReporter "\\.\pipe\gecko-crash-server-pipe.8280" -appDir "C:\Program Files\WindowsApps\Mozilla.MozillaFirefoxNightly_138.2503.509.0_x64__5x4grbbqzn2q4\VFS\ProgramFiles\MozillaFirefoxNightly Package Root\browser" - 3 rdd)
[task 2025-03-05T13:16:46.231Z] 13:16:46     INFO - ==> process 8280 launched child process 6540 ("C:\Program Files\WindowsApps\Mozilla.MozillaFirefoxNightly_138.2503.509.0_x64__5x4grbbqzn2q4\VFS\ProgramFiles\MozillaFirefoxNightly Package Root\firefox.exe" -contentproc -isForBrowser -prefsHandle 3700:28467 -prefMapHandle 3704:286576 -jsInitHandle 3708:256972 -parentBuildID 20250305094447 -ipcHandle 3716 -initialChannelId {71ff6f2b-33fc-4176-9d08-0d3e60e66b58} -parentPid 8280 -crashReporter "\\.\pipe\gecko-crash-server-pipe.8280" -win32kLockedDown -appDir "C:\Program Files\WindowsApps\Mozilla.MozillaFirefoxNightly_138.2503.509.0_x64__5x4grbbqzn2q4\VFS\ProgramFiles\MozillaFirefoxNightly Package Root\browser" - 4 tab)
[task 2025-03-05T13:16:46.232Z] 13:16:46     INFO - ==> process 8280 launched child process 9132 ("C:\Program Files\WindowsApps\Mozilla.MozillaFirefoxNightly_138.2503.509.0_x64__5x4grbbqzn2q4\VFS\ProgramFiles\MozillaFirefoxNightly Package Root\firefox.exe" -contentproc -isForBrowser -prefsHandle 3956:27340 -prefMapHandle 3960:286576 -jsInitHandle 3964:256972 -parentBuildID 20250305094447 -ipcHandle 3972 -initialChannelId {a49df36e-62e6-4550-bac1-ebf41819f595} -parentPid 8280 -crashReporter "\\.\pipe\gecko-crash-server-pipe.8280" -win32kLockedDown -appDir "C:\Program Files\WindowsApps\Mozilla.MozillaFirefoxNightly_138.2503.509.0_x64__5x4grbbqzn2q4\VFS\ProgramFiles\MozillaFirefoxNightly Package Root\browser" - 5 tab)
[task 2025-03-05T13:16:46.234Z] 13:16:46     INFO - ==> process 8280 launched child process 5572 ("C:\Program Files\WindowsApps\Mozilla.MozillaFirefoxNightly_138.2503.509.0_x64__5x4grbbqzn2q4\VFS\ProgramFiles\MozillaFirefoxNightly Package Root\firefox.exe" -contentproc -parentBuildID 20250305094447 -sandboxingKind 0 -prefsHandle 1008:39370 -prefMapHandle 2896:286576 -ipcHandle 4652 -initialChannelId {4d71d34b-11c4-4379-abf3-24be940e60ad} -parentPid 8280 -crashReporter "\\.\pipe\gecko-crash-server-pipe.8280" -win32kLockedDown -appDir "C:\Program Files\WindowsApps\Mozilla.MozillaFirefoxNightly_138.2503.509.0_x64__5x4grbbqzn2q4\VFS\ProgramFiles\MozillaFirefoxNightly Package Root\browser" - 6 utility)
[task 2025-03-05T13:16:46.235Z] 13:16:46     INFO - ==> process 8280 launched child process 4796 ("C:\Program Files\WindowsApps\Mozilla.MozillaFirefoxNightly_138.2503.509.0_x64__5x4grbbqzn2q4\VFS\ProgramFiles\MozillaFirefoxNightly Package Root\firefox.exe" -contentproc -isForBrowser -prefsHandle 4788:36839 -prefMapHandle 4792:286576 -jsInitHandle 4796:256972 -parentBuildID 20250305094447 -ipcHandle 4768 -initialChannelId {c1399c88-5bf8-4bd6-a931-0ee231636bf5} -parentPid 8280 -crashReporter "\\.\pipe\gecko-crash-server-pipe.8280" -win32kLockedDown -appDir "C:\Program Files\WindowsApps\Mozilla.MozillaFirefoxNightly_138.2503.509.0_x64__5x4grbbqzn2q4\VFS\ProgramFiles\MozillaFirefoxNightly Package Root\browser" - 7 tab)
[task 2025-03-05T13:16:46.236Z] 13:16:46     INFO - ==> process 8280 launched child process 3036 ("C:\Program Files\WindowsApps\Mozilla.MozillaFirefoxNightly_138.2503.509.0_x64__5x4grbbqzn2q4\VFS\ProgramFiles\MozillaFirefoxNightly Package Root\firefox.exe" -contentproc -isForBrowser -prefsHandle 5004:36839 -prefMapHandle 5008:286576 -jsInitHandle 5012:256972 -parentBuildID 20250305094447 -ipcHandle 5020 -initialChannelId {80667520-6577-4177-bb1f-9be763f59b3e} -parentPid 8280 -crashReporter "\\.\pipe\gecko-crash-server-pipe.8280" -win32kLockedDown -appDir "C:\Program Files\WindowsApps\Mozilla.MozillaFirefoxNightly_138.2503.509.0_x64__5x4grbbqzn2q4\VFS\ProgramFiles\MozillaFirefoxNightly Package Root\browser" - 8 tab)
[task 2025-03-05T13:16:46.237Z] 13:16:46     INFO - ==> process 8280 launched child process 1712 ("C:\Program Files\WindowsApps\Mozilla.MozillaFirefoxNightly_138.2503.509.0_x64__5x4grbbqzn2q4\VFS\ProgramFiles\MozillaFirefoxNightly Package Root\firefox.exe" -contentproc -isForBrowser -prefsHandle 5116:36839 -prefMapHandle 4620:286576 -jsInitHandle 4316:256972 -parentBuildID 20250305094447 -ipcHandle 4884 -initialChannelId {59e0631a-401d-4746-b76e-c1f43a2a476f} -parentPid 8280 -crashReporter "\\.\pipe\gecko-crash-server-pipe.8280" -win32kLockedDown -appDir "C:\Program Files\WindowsApps\Mozilla.MozillaFirefoxNightly_138.2503.509.0_x64__5x4grbbqzn2q4\VFS\ProgramFiles\MozillaFirefoxNightly Package Root\browser" - 9 tab)
[task 2025-03-05T13:16:46.238Z] 13:16:46     INFO - ==> process 8280 launched child process 8588 ("C:\Program Files\WindowsApps\Mozilla.MozillaFirefoxNightly_138.2503.509.0_x64__5x4grbbqzn2q4\VFS\ProgramFiles\MozillaFirefoxNightly Package Root\firefox.exe" -contentproc -isForBrowser -prefsHandle 5432:39370 -prefMapHandle 5484:286576 -jsInitHandle 5488:256972 -parentBuildID 20250305094447 -ipcHandle 5372 -initialChannelId {d8c8a60d-91d7-4306-8f24-d73effb42b40} -parentPid 8280 -crashReporter "\\.\pipe\gecko-crash-server-pipe.8280" -win32kLockedDown -appDir "C:\Program Files\WindowsApps\Mozilla.MozillaFirefoxNightly_138.2503.509.0_x64__5x4grbbqzn2q4\VFS\ProgramFiles\MozillaFirefoxNightly Package Root\browser" - 10 tab)
[task 2025-03-05T13:16:46.239Z] 13:16:46     INFO - ==> process 8280 launched child process 2572 ("C:\Program Files\WindowsApps\Mozilla.MozillaFirefoxNightly_138.2503.509.0_x64__5x4grbbqzn2q4\VFS\ProgramFiles\MozillaFirefoxNightly Package Root\firefox.exe" -contentproc -isForBrowser -prefsHandle 4388:37011 -prefMapHandle 6112:286576 -jsInitHandle 6108:256972 -parentBuildID 20250305094447 -ipcHandle 5868 -initialChannelId {1f0341b0-b6ef-4e63-8616-2b3cf6bc141d} -parentPid 8280 -crashReporter "\\.\pipe\gecko-crash-server-pipe.8280" -win32kLockedDown -appDir "C:\Program Files\WindowsApps\Mozilla.MozillaFirefoxNightly_138.2503.509.0_x64__5x4grbbqzn2q4\VFS\ProgramFiles\MozillaFirefoxNightly Package Root\browser" - 11 tab)
[task 2025-03-05T13:16:46.240Z] 13:16:46     INFO - ==> 

```