Bug: Intermittent browser/base/content/test/tabcrashed/browser_multipleCrashedTabs.js | single tracking bug
Status: REOPENED
Priority: P5
Created: 2023-06-13 11:55:59+00:00
Resolved: 2025-03-03 07:07:04+00:00

**Filed by:** csabou [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer?job_id=419103238&repo=autoland
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/Hfi1dvcJQYunURHFzhVsUQ/runs/0/artifacts/public/logs/live_backing.log

---
```
[task 2023-06-13T10:49:31.979Z] 10:49:31     INFO - TEST-PASS | browser/base/content/test/tabcrashed/browser_multipleCrashedTabs.js | tab3 has not crashed - true == true - 
[task 2023-06-13T10:49:31.980Z] 10:49:31     INFO - TEST-PASS | browser/base/content/test/tabcrashed/browser_multipleCrashedTabs.js | Got the expected 'multiple' state. - false == false - 
[task 2023-06-13T10:49:31.981Z] 10:49:31     INFO - Buffered messages finished
[task 2023-06-13T10:49:31.983Z] 10:49:31     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/tabcrashed/browser_multipleCrashedTabs.js | Test timed out - 
[task 2023-06-13T10:49:31.985Z] 10:49:31     INFO - Not taking screenshot here: see the one that was previously logged
[task 2023-06-13T10:49:31.993Z] 10:49:31     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/tabcrashed/browser_multipleCrashedTabs.js | A promise chain failed to handle a rejection: AboutTabCrashedReady listener not removed before the end of test - stack: waitForEvent/</<@resource://testing-common/BrowserTestUtils.sys.mjs:1305:15
[task 2023-06-13T10:49:31.993Z] 10:49:31     INFO - ensureDOMPromiseRejectionsProcessed@resource://testing-common/PromiseTestUtils.sys.mjs:115:17
[task 2023-06-13T10:49:31.994Z] 10:49:31     INFO - nextTest@chrome://mochikit/content/browser-test.js:765:29
[task 2023-06-13T10:49:31.994Z] 10:49:31     INFO - timeoutFn@chrome://mochikit/content/browser-test.js:1437:18
[task 2023-06-13T10:49:31.994Z] 10:49:31     INFO - setTimeout handler*Tester_execTest@chrome://mochikit/content/browser-test.js:1379:45
[task 2023-06-13T10:49:31.995Z] 10:49:31     INFO - nextTest/<@chrome://mochikit/content/browser-test.js:1120:14
[task 2023-06-13T10:49:31.998Z] 10:49:31     INFO - SimpleTest.waitForFocus/<@chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:1056:13
[task 2023-06-13T10:49:31.998Z] 10:49:31     INFO - Rejection date: Tue Jun 13 2023 10:49:31 GMT+0000 (Coordinated Universal Time) - false == true - {"filename":"resource://testing-common/PromiseTestUtils.sys.mjs","name":"assertNoUncaughtRejections","sourceId":564,"lineNumber":266,"columnNumber":14,"sourceLine":"","asyncCause":null,"asyncCaller":null,"caller":{"filename":"chrome://mochikit/content/browser-test.js","name":"nextTest","sourceId":528,"lineNumber":766,"columnNumber":29,"sourceLine":"","asyncCause":null,"asyncCaller":null,"caller":{"filename":"chrome://mochikit/content/browser-test.js","name":"timeoutFn","sourceId":528,"lineNumber":1437,"columnNumber":18,"sourceLine":"","asyncCause":null,"asyncCaller":{"filename":"chrome://mochikit/content/browser-test.js","name":"Tester_execTest","sourceId":528,"lineNumber":1379,"columnNumber":45,"sourceLine":"","asyncCause":"setTimeout handler","asyncCaller":null,"caller":{"filename":"chrome://mochikit/content/browser-test.js","name":"nextTest/<","sourceId":528,"lineNumber":1120,"columnNumber":14,"sourceLine":"","asyncCause":null,"asyncCaller":null,"caller":{"filename":"chrome://mochikit/content/tests/SimpleTest/SimpleTest.js","name":"SimpleTest.waitForFocus/<","sourceId":555,"lineNumber":1056,"columnNumber":13,"sourceLine":"","asyncCause":null,"asyncCaller":null,"caller":null,"formattedStack":"SimpleTest.waitForFocus/<@chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:1056:13\n","nativeSavedFrame":{}},"formattedStack":"nextTest/<@chrome://mochikit/content/browser-test.js:1120:14\nSimpleTest.waitForFocus/<@chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:1056:13\n","nativeSavedFrame":{}},"formattedStack":"setTimeout handler*Tester_execTest@chrome://mochikit/content/browser-test.js:1379:45\nnextTest/<@chrome://mochikit/content/browser-test.js:1120:14\nSimpleTest.waitForFocus/<@chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:1056:13\n","nativeSavedFrame":{}},"caller":null,"formattedStack":"timeoutFn@chrome://mochikit/content/browser-test.js:1437:18\nsetTimeout handler*Tester_execTest@chrome://mochikit/content/browser-test.js:1379:45\nnextTest/<@chrome://mochikit/content/browser-test.js:1120:14\nSimpleTest.waitForFocus/<@chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:1056:13\n","nativeSavedFrame":{}},"formattedStack":"nextTest@chrome://mochikit/content/browser-test.js:766:29\ntimeoutFn@chrome://mochikit/content/browser-test.js:1437:18\nsetTimeout handler*Tester_execTest@chrome://mochikit/content/browser-test.js:1379:45\nnextTest/<@chrome://mochikit/content/browser-test.js:1120:14\nSimpleTest.waitForFocus/<@chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:1056:13\n","nativeSavedFrame":{}},"formattedStack":"assertNoUncaughtRejections@resource://testing-common/PromiseTestUtils.sys.mjs:266:14\nnextTest@chrome://mochikit/content/browser-test.js:766:29\ntimeoutFn@chrome://mochikit/content/browser-test.js:1437:18\nsetTimeout handler*Tester_execTest@chrome://mochikit/content/browser-test.js:1379:45\nnextTest/<@chrome://mochikit/content/browser-test.js:1120:14\nSimpleTest.waitForFocus/<@chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:1056:13\n","nativeSavedFrame":{}}
[task 2023-06-13T10:49:31.999Z] 10:49:31     INFO - Stack trace:
[task 2023-06-13T10:49:31.999Z] 10:49:31     INFO - resource://testing-common/PromiseTestUtils.sys.mjs:assertNoUncaughtRejections:266
[task 2023-06-13T10:49:32.000Z] 10:49:31     INFO - chrome://mochikit/content/browser-test.js:nextTest:766
[task 2023-06-13T10:49:32.001Z] 10:49:31     INFO - chrome://mochikit/content/browser-test.js:timeoutFn:1437
[task 2023-06-13T10:49:32.002Z] 10:49:32     INFO - setTimeout handler*chrome://mochikit/content/browser-test.js:Tester_execTest:1379
[task 2023-06-13T10:49:32.002Z] 10:49:32     INFO - chrome://mochikit/content/browser-test.js:nextTest/<:1120
[task 2023-06-13T10:49:32.003Z] 10:49:32     INFO - chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:SimpleTest.waitForFocus/<:1056
[task 2023-06-13T10:49:32.011Z] 10:49:32     INFO - GECKO(8645) | JavaScript error: resource://testing-common/BrowserTestUtils.sys.mjs, line 1305: uncaught exception: AboutTabCrashedReady listener not removed before the end of test
[task 2023-06-13T10:49:32.011Z] 10:49:32     INFO - Console message: [JavaScript Error: "uncaught exception: AboutTabCrashedReady listener not removed before the end of test" {file: "resource://testing-common/BrowserTestUtils.sys.mjs" line: 1305}]
[task 2023-06-13T10:49:32.013Z] 10:49:32     INFO - GECKO(8645) | MEMORY STAT | vsize 3103MB | residentFast 330MB | heapAllocated 176MB
[task 2023-06-13T10:49:32.015Z] 10:49:32     INFO - TEST-OK | browser/base/content/test/tabcrashed/browser_multipleCrashedTabs.js | took 46964ms
[task 2023-06-13T10:49:32.025Z] 10:49:32     INFO - Not taking screenshot here: see the one that was previously logged
[task 2023-06-13T10:49:32.028Z] 10:49:32     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/tabcrashed/browser_multipleCrashedTabs.js | Found a tab after previous test timed out: http://example.net/ - 
[task 2023-06-13T10:49:32.029Z] 10:49:32     INFO - Not taking screenshot here: see the one that was previously logged
[task 2023-06-13T10:49:32.031Z] 10:49:32     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/tabcrashed/browser_multipleCrashedTabs.js | Found a tab after previous test timed out: http://example.org/ - 
[task 2023-06-13T10:49:32.033Z] 10:49:32     INFO - Not taking screenshot here: see the one that was previously logged
[task 2023-06-13T10:49:32.035Z] 10:49:32     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/tabcrashed/browser_multipleCrashedTabs.js | Found a tab after previous test timed out: http://example.com/ - 
```