Bug: Intermittent browser/components/aboutwelcome/tests/browser/browser_aboutwelcome_configurable_ui.js | single tracking bug
Status: REOPENED
Priority: P5
Created: 2022-08-12 19:20:33+00:00
Resolved: 2025-03-03 06:50:05+00:00

**Filed by:** mlaza [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer?job_id=387191015&repo=autoland
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/bd7qeuFoS02T1A-B0M61gg/runs/0/artifacts/public/logs/live_backing.log

---
```
[task 2022-08-12T18:37:33.031Z] 18:37:33     INFO - TEST-PASS | browser/components/newtab/test/browser/browser_aboutwelcome_configurable_ui.js | Starts on second screen when configured with startScreen index equal to 1 - 
[task 2022-08-12T18:37:33.031Z] 18:37:33     INFO - Buffered messages finished
[task 2022-08-12T18:37:33.033Z] 18:37:33     INFO - TEST-UNEXPECTED-FAIL | browser/components/newtab/test/browser/browser_aboutwelcome_configurable_ui.js | Uncaught exception in test - at chrome://mochitests/content/browser/browser/components/newtab/test/browser/browser_aboutwelcome_configurable_ui.js:590 - TypeError: can't access property "args", stub.secondCall is null
[task 2022-08-12T18:37:33.033Z] 18:37:33     INFO - Stack trace:
[task 2022-08-12T18:37:33.033Z] 18:37:33     INFO - test_aboutwelcome_start_screen_configured@chrome://mochitests/content/browser/browser/components/newtab/test/browser/browser_aboutwelcome_configurable_ui.js:590:1
[task 2022-08-12T18:37:33.033Z] 18:37:33     INFO - Leaving test bound test_aboutwelcome_start_screen_configured
[task 2022-08-12T18:37:33.034Z] 18:37:33     INFO - GECKO(2052) | console.debug: AboutWelcomeParent:
[task 2022-08-12T18:37:33.035Z] 18:37:33     INFO - GECKO(2052) |   Received content event: AWPage:TELEMETRY_EVENT
[task 2022-08-12T18:37:33.036Z] 18:37:33     INFO - GECKO(2052) | [Child 2204: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 39 (7f0c4cf10400) [pid = 2204] [serial = 30] [outer = 0] [url = about:blank]
[task 2022-08-12T18:37:33.036Z] 18:37:33     INFO - GECKO(2052) | [Child 2204: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 38 (7f0c4f733400) [pid = 2204] [serial = 23] [outer = 0] [url = about:blank]
[task 2022-08-12T18:37:33.037Z] 18:37:33     INFO - GECKO(2052) | [Child 2204: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 37 (7f0c4ccf5000) [pid = 2204] [serial = 21] [outer = 0] [url = about:welcome]
[task 2022-08-12T18:37:33.038Z] 18:37:33     INFO - GECKO(2052) | [Child 2204: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 36 (7f0c4cf0b800) [pid = 2204] [serial = 26] [outer = 0] [url = about:blank]
[task 2022-08-12T18:37:33.039Z] 18:37:33     INFO - GECKO(2052) | [Child 2204: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 35 (7f0c4ccf7000) [pid = 2204] [serial = 20] [outer = 0] [url = about:blank]
[task 2022-08-12T18:37:33.040Z] 18:37:33     INFO - GECKO(2052) | [Parent 2052, Main Thread] WARNING: WebProgress Ignored: BrowsingContext is null or discarded: file /builds/worker/checkouts/gecko/dom/ipc/BrowserParent.cpp:3073
[task 2022-08-12T18:37:33.040Z] 18:37:33     INFO - GECKO(2052) | console.warn: AboutWelcomeParent: Not handling AWPage:GET_REGION because the browser doesn't exist.
[task 2022-08-12T18:37:33.041Z] 18:37:33     INFO - GECKO(2052) | console.warn: AboutWelcomeParent: Not handling AWPage:GET_SELECTED_THEME because the browser doesn't exist.
[task 2022-08-12T18:37:33.042Z] 18:37:33     INFO - GECKO(2052) | console.warn: AboutWelcomeParent: Not handling AWPage:TELEMETRY_EVENT because the browser doesn't exist.
[task 2022-08-12T18:37:33.047Z] 18:37:33     INFO - GECKO(2052) | console.debug: AboutWelcomeParent:
[task 2022-08-12T18:37:33.048Z] 18:37:33     INFO - GECKO(2052) |   Terminate reason is welcome-tab-closed
[task 2022-08-12T18:37:33.048Z] 18:37:33     INFO - GECKO(2052) | console.debug: AboutWelcomeParent:
[task 2022-08-12T18:37:33.049Z] 18:37:33     INFO - GECKO(2052) |   Terminate reason is welcome-tab-closed
[task 2022-08-12T18:37:33.050Z] 18:37:33     INFO - GECKO(2052) | console.debug: AboutWelcomeParent:
[task 2022-08-12T18:37:33.051Z] 18:37:33     INFO - GECKO(2052) |   Terminate reason is welcome-tab-closed
[task 2022-08-12T18:37:33.051Z] 18:37:33     INFO - GECKO(2052) | console.debug: AboutWelcomeParent:
[task 2022-08-12T18:37:33.052Z] 18:37:33     INFO - GECKO(2052) |   Terminate reason is welcome-tab-closed
[task 2022-08-12T18:37:33.053Z] 18:37:33     INFO - GECKO(2052) | console.debug: AboutWelcomeParent:
[task 2022-08-12T18:37:33.054Z] 18:37:33     INFO - GECKO(2052) |   Terminate reason is welcome-tab-closed
[task 2022-08-12T18:37:33.055Z] 18:37:33     INFO - GECKO(2052) | [Socket 2087, Main Thread] WARNING: response headers not available or incomplete: file /builds/worker/checkouts/gecko/netwerk/protocol/http/nsHttpTransaction.cpp:473
[task 2022-08-12T18:37:33.056Z] 18:37:33     INFO - GECKO(2052) | console.debug: AboutWelcomeParent:
[task 2022-08-12T18:37:33.056Z] 18:37:33     INFO - GECKO(2052) |   Terminate reason is welcome-tab-closed
[task 2022-08-12T18:37:33.063Z] 18:37:33     INFO - GECKO(2052) | console.debug: AboutWelcomeParent:
[task 2022-08-12T18:37:33.064Z] 18:37:33     INFO - GECKO(2052) |   Terminate reason is welcome-tab-closed
[task 2022-08-12T18:37:33.065Z] 18:37:33     INFO - GECKO(2052) | [Socket 2087, Main Thread] WARNING: response headers not available or incomplete: file /builds/worker/checkouts/gecko/netwerk/protocol/http/nsHttpTransaction.cpp:473
[task 2022-08-12T18:37:33.066Z] 18:37:33     INFO - GECKO(2052) | console.debug: AboutWelcomeParent:
[task 2022-08-12T18:37:33.067Z] 18:37:33     INFO - GECKO(2052) |   Terminate reason is welcome-tab-closed
[task 2022-08-12T18:37:33.068Z] 18:37:33     INFO - GECKO(2052) | console.debug: AboutWelcomeParent:
[task 2022-08-12T18:37:33.069Z] 18:37:33     INFO - GECKO(2052) |   Terminate reason is welcome-tab-closed
[task 2022-08-12T18:37:33.070Z] 18:37:33     INFO - GECKO(2052) | console.debug: AboutWelcomeParent:
[task 2022-08-12T18:37:33.070Z] 18:37:33     INFO - GECKO(2052) |   Terminate reason is welcome-tab-closed
[task 2022-08-12T18:37:33.071Z] 18:37:33     INFO - GECKO(2052) | console.debug: AboutWelcomeParent:
[task 2022-08-12T18:37:33.072Z] 18:37:33     INFO - GECKO(2052) |   Terminate reason is welcome-tab-closed
[task 2022-08-12T18:37:33.073Z] 18:37:33     INFO - GECKO(2052) | [Socket 2087, Main Thread] WARNING: response headers not available or incomplete: file /builds/worker/checkouts/gecko/netwerk/protocol/http/nsHttpTransaction.cpp:473
[task 2022-08-12T18:37:33.074Z] 18:37:33     INFO - GECKO(2052) | console.debug: AboutWelcomeParent:
[task 2022-08-12T18:37:33.075Z] 18:37:33     INFO - GECKO(2052) |   Terminate reason is welcome-tab-closed
[task 2022-08-12T18:37:33.538Z] 18:37:33     INFO - GECKO(2052) | [Child 2204, Main Thread] WARNING: '!CanHandleWith(aPresContext)', file /builds/worker/checkouts/gecko/dom/events/IMEStateManager.cpp:498
[task 2022-08-12T18:37:33.618Z] 18:37:33     INFO - GECKO(2052) | console.debug: AboutWelcomeParent:
[task 2022-08-12T18:37:33.621Z] 18:37:33     INFO - GECKO(2052) |   Terminate reason is welcome-tab-closed
[task 2022-08-12T18:37:34.164Z] 18:37:34     INFO - GECKO(2052) | MEMORY STAT vsizeMaxContiguous not supported in this build configuration.
[task 2022-08-12T18:37:34.166Z] 18:37:34     INFO - GECKO(2052) | MEMORY STAT | vsize 3335MB | residentFast 578MB | heapAllocated 275MB
[task 2022-08-12T18:37:34.169Z] 18:37:34     INFO - TEST-OK | browser/components/newtab/test/browser/browser_aboutwelcome_configurable_ui.js | took 22384ms
```