Bug: Intermittent browser/components/privatebrowsing/test/browser/browser_privatebrowsing_zoom.js | single tracking bug
Status: RESOLVED
Priority: P5
Resolution: INCOMPLETE
Created: 2022-12-27 19:17:42+00:00
Resolved: 2023-02-14 17:03:22+00:00

**Filed by:** csabou [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer?job_id=400838104&repo=mozilla-beta
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/QsLstsDFTvSr5gCWn2t4IQ/runs/0/artifacts/public/logs/live_backing.log

---
```
[task 2022-12-27T18:00:15.679Z] 18:00:15     INFO - TEST-PASS | browser/components/privatebrowsing/test/browser/browser_privatebrowsing_zoom.js | Zoom level can be changed - 
[task 2022-12-27T18:00:15.680Z] 18:00:15     INFO - Buffered messages finished
[task 2022-12-27T18:00:15.680Z] 18:00:15     INFO - TEST-UNEXPECTED-FAIL | browser/components/privatebrowsing/test/browser/browser_privatebrowsing_zoom.js | Test timed out - 
[task 2022-12-27T18:00:15.681Z] 18:00:15     INFO - GECKO(4356) | MEMORY STAT | vsize 1590MB | vsizeMaxContiguous 23MB | residentFast 602MB | heapAllocated 595MB
[task 2022-12-27T18:00:15.682Z] 18:00:15     INFO - TEST-OK | browser/components/privatebrowsing/test/browser/browser_privatebrowsing_zoom.js | took 45034ms
[task 2022-12-27T18:00:15.682Z] 18:00:15     INFO - checking window state
[task 2022-12-27T18:00:15.683Z] 18:00:15     INFO - Not taking screenshot here: see the one that was previously logged
[task 2022-12-27T18:00:15.683Z] 18:00:15     INFO - TEST-UNEXPECTED-FAIL | browser/components/privatebrowsing/test/browser/browser_privatebrowsing_zoom.js | Found a browser window after previous test timed out - 
[task 2022-12-27T18:00:15.684Z] 18:00:15     INFO - GECKO(4356) | must wait for focus
[task 2022-12-27T18:00:15.718Z] 18:00:15     INFO - TEST-START | browser/components/privatebrowsing/test/browser/browser_privatebrowsing_zoomrestore.js
[task 2022-12-27T18:00:15.733Z] 18:00:15     INFO - Not taking screenshot here: see the one that was previously logged
[task 2022-12-27T18:00:15.733Z] 18:00:15     INFO - Buffered messages logged at 18:00:15
[task 2022-12-27T18:00:15.733Z] 18:00:15     INFO - Entering test bound test
[task 2022-12-27T18:00:15.734Z] 18:00:15     INFO - Buffered messages finished
[task 2022-12-27T18:00:15.735Z] 18:00:15     INFO - TEST-UNEXPECTED-FAIL | browser/components/privatebrowsing/test/browser/browser_privatebrowsing_zoom.js | Uncaught exception received from previously timed out test - at chrome://mochitests/content/browser/browser/components/privatebrowsing/test/browser/browser_privatebrowsing_zoom.js:34 - ReferenceError: is is not defined
[task 2022-12-27T18:00:15.735Z] 18:00:15     INFO - Stack trace:
[task 2022-12-27T18:00:15.735Z] 18:00:15     INFO - test@chrome://mochitests/content/browser/browser/components/privatebrowsing/test/browser/browser_privatebrowsing_zoom.js:34:3
[task 2022-12-27T18:00:15.742Z] 18:00:15     INFO - GECKO(4356) | JavaScript error: chrome://mochikit/content/browser-test.js, line 1100: TypeError: currentScope.__tasks is null
[task 2022-12-27T18:00:15.744Z] 18:00:15     INFO - Console message: [JavaScript Error: "TypeError: currentScope.__tasks is null" {file: "chrome://mochikit/content/browser-test.js" line: 1100}]
[task 2022-12-27T18:00:15.929Z] 18:00:15     INFO - GECKO(4356) | 1672164015912	Marionette	TRACE	Received observer notification browser-delayed-startup-finished
[task 2022-12-27T18:00:15.962Z] 18:00:15     INFO - TEST-PASS | browser/components/privatebrowsing/test/browser/browser_privatebrowsing_zoomrestore.js | Zoom level for freshly loaded about:blank should be 1 - 
[task 2022-12-27T18:00:15.963Z] 18:00:15     INFO - TEST-PASS | browser/components/privatebrowsing/test/browser/browser_privatebrowsing_zoomrestore.js | Zoom level for about:blank should be changed - 
[task 2022-12-27T18:00:18.131Z] 18:00:18     INFO - GECKO(4356) | [GFX1-]: wr_renderer_render: OutOfMemory
[task 2022-12-27T18:00:18.131Z] 18:00:18     INFO - GECKO(4356) | [GFX1-]: wr_renderer_render: OutOfMemory
[task 2022-12-27T18:00:18.145Z] 18:00:18     INFO - GECKO(4356) | 1672164018128	Marionette	TRACE	Received observer notification browser-delayed-startup-finished
[task 2022-12-27T18:00:18.158Z] 18:00:18     INFO - GECKO(4356) | [GFX1-]: Handling webrender error 2
[task 2022-12-27T18:00:18.377Z] 18:00:18     INFO - TEST-PASS | browser/components/privatebrowsing/test/browser/browser_privatebrowsing_zoomrestore.js | Zoom level for about:privatebrowsing should be reset - 
[task 2022-12-27T18:00:18.464Z] 18:00:18     INFO - Not taking screenshot here: see the one that was previously logged
[task 2022-12-27T18:00:18.466Z] 18:00:18     INFO - TEST-UNEXPECTED-FAIL | browser/components/privatebrowsing/test/browser/browser_privatebrowsing_zoomrestore.js | A promise chain failed to handle a rejection: currentScope.__tasks is null - stack: _runTaskBasedTest@chrome://mochikit/content/browser-test.js:1100:13
[task 2022-12-27T18:00:18.466Z] 18:00:18     INFO - Rejection date: Tue Dec 27 2022 18:00:15 GMT+0000 (Coordinated Universal Time) - false == true - JS frame :: resource://testing-common/PromiseTestUtils.sys.mjs :: assertNoUncaughtRejections :: line 266
[task 2022-12-27T18:00:18.466Z] 18:00:18     INFO - Stack trace:
[task 2022-12-27T18:00:18.467Z] 18:00:18     INFO - resource://testing-common/PromiseTestUtils.sys.mjs:assertNoUncaughtRejections:266
[task 2022-12-27T18:00:18.467Z] 18:00:18     INFO - chrome://mochikit/content/browser-test.js:handleTask:1065
[task 2022-12-27T18:00:18.467Z] 18:00:18     INFO - Leaving test bound test
[task 2022-12-27T18:00:18.691Z] 18:00:18     INFO - GECKO(4356) | MEMORY STAT | vsize 1616MB | vsizeMaxContiguous 23MB | residentFast 635MB | heapAllocated 629MB
[task 2022-12-27T18:00:18.691Z] 18:00:18     INFO - TEST-OK | browser/components/privatebrowsing/test/browser/browser_privatebrowsing_zoomrestore.js | took 2973ms
```