Bug: Intermittent browser/components/newtab/test/browser/browser_aboutwelcome_configurable_ui.js | single tracking bug
Status: RESOLVED
Priority: P5
Resolution: DUPLICATE
Created: 2022-08-15 14:31:44+00:00
Resolved: 2022-08-17 14:17:49+00:00

**Filed by:** mlaza [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer?job_id=387351136&repo=autoland
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/MUPQ6GYmTkikNTPcMjf6ew/runs/0/artifacts/public/logs/live_backing.log

---
```
[task 2022-08-15T13:19:53.985Z] 13:19:53     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 2022-08-15T13:19:53.986Z] 13:19:53     INFO - Buffered messages finished
[task 2022-08-15T13:19:53.988Z] 13:19:53     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 2022-08-15T13:19:53.988Z] 13:19:53     INFO - Stack trace:
[task 2022-08-15T13:19:53.988Z] 13:19:53     INFO - test_aboutwelcome_start_screen_configured@chrome://mochitests/content/browser/browser/components/newtab/test/browser/browser_aboutwelcome_configurable_ui.js:590:1
[task 2022-08-15T13:19:53.989Z] 13:19:53     INFO - Leaving test bound test_aboutwelcome_start_screen_configured
[task 2022-08-15T13:19:53.990Z] 13:19:53     INFO - GECKO(9352) | console.debug: AboutWelcomeParent:
[task 2022-08-15T13:19:53.993Z] 13:19:53     INFO - GECKO(9352) |   Received content event: AWPage:TELEMETRY_EVENT
[task 2022-08-15T13:19:53.995Z] 13:19:53     INFO - GECKO(9352) | [Child 9477, Main Thread] WARNING: '!CanHandleWith(aPresContext)', file /builds/worker/checkouts/gecko/dom/events/IMEStateManager.cpp:498
[task 2022-08-15T13:19:54.001Z] 13:19:54     INFO - GECKO(9352) | JavaScript error: , line 0: AbortError: Actor 'AboutWelcome' destroyed before query 'AWPage:GET_REGION' was resolved
[task 2022-08-15T13:19:54.001Z] 13:19:54     INFO - GECKO(9352) | JavaScript error: , line 0: AbortError: Actor 'AboutWelcome' destroyed before query 'AWPage:GET_SELECTED_THEME' was resolved
[task 2022-08-15T13:19:54.002Z] 13:19:54     INFO - GECKO(9352) | [Parent 9352, Main Thread] WARNING: WebProgress Ignored: BrowsingContext is null or discarded: file /builds/worker/checkouts/gecko/dom/ipc/BrowserParent.cpp:3073
[task 2022-08-15T13:19:54.003Z] 13:19:54     INFO - GECKO(9352) | console.warn: AboutWelcomeParent: Not handling AWPage:GET_REGION because the browser doesn't exist.
[task 2022-08-15T13:19:54.004Z] 13:19:54     INFO - GECKO(9352) | console.warn: AboutWelcomeParent: Not handling AWPage:GET_SELECTED_THEME because the browser doesn't exist.
[task 2022-08-15T13:19:54.005Z] 13:19:54     INFO - GECKO(9352) | console.warn: AboutWelcomeParent: Not handling AWPage:TELEMETRY_EVENT because the browser doesn't exist.
[task 2022-08-15T13:19:54.006Z] 13:19:54     INFO - GECKO(9352) | [Socket 9386, Main Thread] WARNING: response headers not available or incomplete: file /builds/worker/checkouts/gecko/netwerk/protocol/http/nsHttpTransaction.cpp:473
[task 2022-08-15T13:19:54.006Z] 13:19:54     INFO - GECKO(9352) | [Socket 9386, Main Thread] WARNING: response headers not available or incomplete: file /builds/worker/checkouts/gecko/netwerk/protocol/http/nsHttpTransaction.cpp:473
[task 2022-08-15T13:19:54.007Z] 13:19:54     INFO - GECKO(9352) | [Socket 9386, Main Thread] WARNING: response headers not available or incomplete: file /builds/worker/checkouts/gecko/netwerk/protocol/http/nsHttpTransaction.cpp:473
[task 2022-08-15T13:19:54.008Z] 13:19:54     INFO - GECKO(9352) | [Socket 9386, Main Thread] WARNING: response headers not available or incomplete: file /builds/worker/checkouts/gecko/netwerk/protocol/http/nsHttpTransaction.cpp:473
[task 2022-08-15T13:19:54.009Z] 13:19:54     INFO - GECKO(9352) | console.debug: AboutWelcomeParent:
[task 2022-08-15T13:19:54.010Z] 13:19:54     INFO - GECKO(9352) |   Terminate reason is welcome-tab-closed
[task 2022-08-15T13:19:54.010Z] 13:19:54     INFO - GECKO(9352) | console.debug: AboutWelcomeParent:
[task 2022-08-15T13:19:54.011Z] 13:19:54     INFO - GECKO(9352) |   Terminate reason is welcome-tab-closed
[task 2022-08-15T13:19:54.012Z] 13:19:54     INFO - GECKO(9352) | console.debug: AboutWelcomeParent:
[task 2022-08-15T13:19:54.012Z] 13:19:54     INFO - GECKO(9352) |   Terminate reason is welcome-tab-closed
[task 2022-08-15T13:19:54.013Z] 13:19:54     INFO - GECKO(9352) | console.debug: AboutWelcomeParent:
[task 2022-08-15T13:19:54.016Z] 13:19:54     INFO - GECKO(9352) |   Terminate reason is welcome-tab-closed
[task 2022-08-15T13:19:54.017Z] 13:19:54     INFO - GECKO(9352) | [Socket 9386, Main Thread] WARNING: response headers not available or incomplete: file /builds/worker/checkouts/gecko/netwerk/protocol/http/nsHttpTransaction.cpp:473
[task 2022-08-15T13:19:54.017Z] 13:19:54     INFO - GECKO(9352) | [Socket 9386, Main Thread] WARNING: response headers not available or incomplete: file /builds/worker/checkouts/gecko/netwerk/protocol/http/nsHttpTransaction.cpp:473
[task 2022-08-15T13:19:54.018Z] 13:19:54     INFO - GECKO(9352) | console.debug: AboutWelcomeParent:
[task 2022-08-15T13:19:54.019Z] 13:19:54     INFO - GECKO(9352) |   Terminate reason is welcome-tab-closed
[task 2022-08-15T13:19:54.020Z] 13:19:54     INFO - GECKO(9352) | [Socket 9386, Main Thread] WARNING: response headers not available or incomplete: file /builds/worker/checkouts/gecko/netwerk/protocol/http/nsHttpTransaction.cpp:473
[task 2022-08-15T13:19:54.020Z] 13:19:54     INFO - GECKO(9352) | console.debug: AboutWelcomeParent:
[task 2022-08-15T13:19:54.021Z] 13:19:54     INFO - GECKO(9352) |   Terminate reason is welcome-tab-closed
[task 2022-08-15T13:19:54.022Z] 13:19:54     INFO - GECKO(9352) | console.debug: AboutWelcomeParent:
[task 2022-08-15T13:19:54.022Z] 13:19:54     INFO - GECKO(9352) |   Terminate reason is welcome-tab-closed
[task 2022-08-15T13:19:54.023Z] 13:19:54     INFO - GECKO(9352) | console.debug: AboutWelcomeParent:
[task 2022-08-15T13:19:54.024Z] 13:19:54     INFO - GECKO(9352) |   Terminate reason is welcome-tab-closed
[task 2022-08-15T13:19:54.025Z] 13:19:54     INFO - GECKO(9352) | console.debug: AboutWelcomeParent:
[task 2022-08-15T13:19:54.025Z] 13:19:54     INFO - GECKO(9352) |   Terminate reason is welcome-tab-closed
[task 2022-08-15T13:19:54.026Z] 13:19:54     INFO - GECKO(9352) | console.debug: AboutWelcomeParent:
[task 2022-08-15T13:19:54.027Z] 13:19:54     INFO - GECKO(9352) |   Terminate reason is welcome-tab-closed
[task 2022-08-15T13:19:54.028Z] 13:19:54     INFO - GECKO(9352) | console.debug: AboutWelcomeParent:
[task 2022-08-15T13:19:54.028Z] 13:19:54     INFO - GECKO(9352) |   Terminate reason is welcome-tab-closed
[task 2022-08-15T13:19:54.029Z] 13:19:54     INFO - GECKO(9352) | console.debug: AboutWelcomeParent:
[task 2022-08-15T13:19:54.030Z] 13:19:54     INFO - GECKO(9352) |   Terminate reason is welcome-tab-closed
[task 2022-08-15T13:19:54.031Z] 13:19:54     INFO - GECKO(9352) | console.debug: AboutWelcomeParent:
[task 2022-08-15T13:19:54.031Z] 13:19:54     INFO - GECKO(9352) |   Terminate reason is welcome-tab-closed[task 2022-08-15T13:19:54.064Z] 13:19:54     INFO - Console message: [JavaScript Error: "AbortError: Actor 'AboutWelcome' destroyed before query 'AWPage:GET_REGION' was resolved"]
[task 2022-08-15T13:19:54.066Z] 13:19:54     INFO - Console message: [JavaScript Error: "AbortError: Actor 'AboutWelcome' destroyed before query 'AWPage:GET_SELECTED_THEME' was resolved"]
[task 2022-08-15T13:19:54.387Z] 13:19:54     INFO - GECKO(9352) | [Child 9477: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 39 (7f1c0eaec000) [pid = 9477] [serial = 30] [outer = 0] [url = about:blank]
[task 2022-08-15T13:19:54.389Z] 13:19:54     INFO - GECKO(9352) | [Child 9477: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 38 (7f1c10fed800) [pid = 9477] [serial = 21] [outer = 0] [url = about:welcome]
[task 2022-08-15T13:19:54.389Z] 13:19:54     INFO - GECKO(9352) | [Child 9477: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 37 (7f1c0eae3800) [pid = 9477] [serial = 23] [outer = 0] [url = about:blank]
[task 2022-08-15T13:19:54.391Z] 13:19:54     INFO - GECKO(9352) | [Child 9477: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 36 (7f1c0eae7800) [pid = 9477] [serial = 27] [outer = 0] [url = about:blank]
[task 2022-08-15T13:19:54.392Z] 13:19:54     INFO - GECKO(9352) | [Child 9477: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 35 (7f1c10ff6000) [pid = 9477] [serial = 20] [outer = 0] [url = about:blank]
[task 2022-08-15T13:19:54.393Z] 13:19:54     INFO - GECKO(9352) | [Child 9477: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 34 (7f1c0eaef400) [pid = 9477] [serial = 33] [outer = 0] [url = about:blank]
[task 2022-08-15T13:19:54.624Z] 13:19:54     INFO - GECKO(9352) | MEMORY STAT vsizeMaxContiguous not supported in this build configuration.
[task 2022-08-15T13:19:54.627Z] 13:19:54     INFO - GECKO(9352) | MEMORY STAT | vsize 3332MB | residentFast 575MB | heapAllocated 279MB
[task 2022-08-15T13:19:54.630Z] 13:19:54     INFO - TEST-OK | browser/components/newtab/test/browser/browser_aboutwelcome_configurable_ui.js | took 20297ms
```