Bug: Intermittent browser/components/newtab/test/browser/browser_aboutwelcome_multistage_languageSwitcher.js | Uncaught exception in test - Should render [data-l10n-id*="onboarding-live-language"] in Live language switching (waiting for languages) - timed o
Status: NEW
Priority: P5
Created: 2022-03-03 05:38:11+00:00
Resolved: 2022-08-25 14:19:49+00:00

**Filed by:** smolnar [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer?job_id=369741147&repo=autoland
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/csM4VPVwTm2bevpN2J5x5g/runs/0/artifacts/public/logs/live_backing.log

---
```
INFO - TEST-START | browser/components/newtab/test/browser/browser_aboutwelcome_multistage_languageSwitcher.js
[task 2022-03-02T22:52:55.570Z] 22:52:55     INFO - GECKO(6588) | console.debug: AboutWelcomeChild:
[task 2022-03-02T22:52:55.570Z] 22:52:55     INFO - GECKO(6588) |   Received page event DOMDocElementInserted
[task 2022-03-02T22:52:55.588Z] 22:52:55     INFO - GECKO(6588) | console.debug: AboutWelcomeParent:
[task 2022-03-02T22:52:55.600Z] 22:52:55     INFO - GECKO(6588) |   Received content event: AWPage:GET_ATTRIBUTION_DATA
[task 2022-03-02T22:52:55.604Z] 22:52:55     INFO - GECKO(6588) | console.debug: AboutWelcomeChild:
[task 2022-03-02T22:52:55.604Z] 22:52:55     INFO - GECKO(6588) |   Loading about:welcome with aboutwelcome-experiment-0.2884548459717762 experiment
[task 2022-03-02T22:52:55.606Z] 22:52:55     INFO - GECKO(6588) | console.debug: AboutWelcomeParent:
[task 2022-03-02T22:52:55.607Z] 22:52:55     INFO - GECKO(6588) |   Received content event: AWPage:NEED_DEFAULT
[task 2022-03-02T22:52:55.607Z] 22:52:55     INFO - GECKO(6588) | console.debug: AboutWelcomeParent:
[task 2022-03-02T22:52:55.608Z] 22:52:55     INFO - GECKO(6588) |   Received content event: AWPage:DOES_APP_NEED_PIN
[task 2022-03-02T22:52:55.609Z] 22:52:55     INFO - GECKO(6588) | console.debug: AboutWelcomeParent:
[task 2022-03-02T22:52:55.609Z] 22:52:55     INFO - GECKO(6588) |   Received content event: AWPage:GET_APP_AND_SYSTEM_LOCALE_INFO
[task 2022-03-02T22:52:55.623Z] 22:52:55     INFO - GECKO(6588) | console.debug: AboutWelcomeParent:
[task 2022-03-02T22:52:55.632Z] 22:52:55     INFO - GECKO(6588) |   Received content event: AWPage:FXA_METRICS_FLOW_URI
[task 2022-03-02T22:52:55.632Z] 22:52:55     INFO - GECKO(6588) | console.debug: AboutWelcomeParent:
[task 2022-03-02T22:52:55.633Z] 22:52:55     INFO - GECKO(6588) |   Received content event: AWPage:TELEMETRY_EVENT
[task 2022-03-02T22:52:55.634Z] 22:52:55     INFO - GECKO(6588) | console.debug: AboutWelcomeParent:
[task 2022-03-02T22:52:55.635Z] 22:52:55     INFO - GECKO(6588) |   Received content event: AWPage:SET_WELCOME_MESSAGE_SEEN
[task 2022-03-02T22:52:55.635Z] 22:52:55     INFO - GECKO(6588) | console.debug: AboutWelcomeParent:
[task 2022-03-02T22:52:55.636Z] 22:52:55     INFO - GECKO(6588) |   Received content event: AWPage:TELEMETRY_EVENT
[task 2022-03-02T22:52:55.637Z] 22:52:55     INFO - GECKO(6588) | console.debug: AboutWelcomeParent:
[task 2022-03-02T22:52:55.637Z] 22:52:55     INFO - GECKO(6588) |   Received content event: AWPage:GET_REGION
[task 2022-03-02T22:52:55.637Z] 22:52:55     INFO - GECKO(6588) | console.debug: AboutWelcomeParent:
[task 2022-03-02T22:52:55.638Z] 22:52:55     INFO - GECKO(6588) |   Received content event: AWPage:GET_SELECTED_THEME
[task 2022-03-02T22:52:55.638Z] 22:52:55     INFO - GECKO(6588) | console.debug: AboutWelcomeParent:
[task 2022-03-02T22:52:55.639Z] 22:52:55     INFO - GECKO(6588) |   Received content event: AWPage:NEGOTIATE_LANGPACK
[task 2022-03-02T22:52:55.639Z] 22:52:55     INFO - GECKO(6588) | console.debug: AboutWelcomeParent:
[task 2022-03-02T22:52:55.640Z] 22:52:55     INFO - GECKO(6588) |   Received content event: AWPage:TELEMETRY_EVENT
[task 2022-03-02T22:52:55.986Z] 22:52:55     INFO - GECKO(6588) | console.debug: AboutWelcomeParent:
[task 2022-03-02T22:52:55.990Z] 22:52:55     INFO - GECKO(6588) |   Received content event: AWPage:TELEMETRY_EVENT
[task 2022-03-02T22:52:55.995Z] 22:52:55     INFO - GECKO(6588) | console.debug: AboutWelcomeParent:
[task 2022-03-02T22:52:55.996Z] 22:52:55     INFO - GECKO(6588) |   Received content event: AWPage:TELEMETRY_EVENT
[task 2022-03-02T22:53:01.258Z] 22:53:01     INFO - TEST-INFO | started process screenshot
[task 2022-03-02T22:53:01.358Z] 22:53:01     INFO - TEST-INFO | screenshot: exit 0
[task 2022-03-02T22:53:01.362Z] 22:53:01     INFO - Buffered messages logged at 22:52:55
INFO - Entering test bound initSandbox
[task 2022-03-02T22:53:01.363Z] 22:53:01     INFO - Leaving test bound initSandbox
[task 2022-03-02T22:53:01.363Z] 22:53:01     INFO - Entering test bound test_aboutwelcome_languageSwitcher_accept
[task 2022-03-02T22:53:01.363Z] 22:53:01     INFO - Mocking LangPackMatcher.jsm APIs
[task 2022-03-02T22:53:01.364Z] 22:53:01     INFO - Opening about:welcome
[task 2022-03-02T22:53:01.364Z] 22:53:01     INFO - Requesting which langpacks are available for download
[task 2022-03-02T22:53:01.365Z] 22:53:01     INFO - Clicking the primary button to start the onboarding process.
[task 2022-03-02T22:53:01.365Z] 22:53:01     INFO - Buffered messages finished
[task 2022-03-02T22:53:01.366Z] 22:53:01     INFO - TEST-UNEXPECTED-FAIL | browser/components/newtab/test/browser/browser_aboutwelcome_multistage_languageSwitcher.js | Uncaught exception in test - Should render [data-l10n-id*="onboarding-live-language"] in Live language switching (waiting for languages) - timed out after 50 tries.
[task 2022-03-02T22:53:01.367Z] 22:53:01     INFO - Leaving test bound test_aboutwelcome_languageSwitcher_accept
[task 2022-03-02T22:53:01.367Z] 22:53:01     INFO - Entering test bound test_aboutwelcome_languageSwitcher_accept
[task 2022-03-02T22:53:01.368Z] 22:53:01     INFO - Mocking LangPackMatcher.jsm APIs
[task 2022-03-02T22:53:01.368Z] 22:53:01     INFO - Opening about:welcome
[task 2022-03-02T22:53:01.368Z] 22:53:01     INFO - GECKO(6588) | console.debug: AboutWelcomeChild:
```