Bug: Intermittent browser/base/content/test/performance/browser_tabdetach.js | uncaught exception - uncaught exception: out of memory at undefined
Status: RESOLVED
Priority: P5
Resolution: INCOMPLETE
Created: 2021-03-27 11:36:46+00:00
Resolved: 2021-06-15 17:02:51+00:00

**Filed by:** malexandru [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer?job_id=334633951&repo=autoland
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/Uy_8TCtQSaOAbHbEkY8GpQ/runs/0/artifacts/public/logs/live_backing.log

---
```
[task 2021-03-27T10:57:49.670Z] 10:57:49     INFO - TEST-OK | browser/base/content/test/performance/browser_tabclose_grow.js | took 4006ms
[task 2021-03-27T10:57:49.685Z] 10:57:49     INFO - GECKO(4968) | [Child 3852: Main Thread]: I/DocShellAndDOMWindowLeak ++DOCSHELL 71c5000 == 6 [pid = 3852] [id = 7]
[task 2021-03-27T10:57:49.685Z] 10:57:49     INFO - GECKO(4968) | [Child 3852: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 13 (71f6b00) [pid = 3852] [serial = 19] [outer = 0]
[task 2021-03-27T10:57:49.685Z] 10:57:49     INFO - GECKO(4968) | [Child 3852: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 14 (71c7000) [pid = 3852] [serial = 20] [outer = 71f6b00]
[task 2021-03-27T10:57:49.700Z] 10:57:49     INFO - checking window state
[task 2021-03-27T10:57:49.721Z] 10:57:49     INFO - GECKO(4968) | [Child 3420: Main Thread]: I/DocShellAndDOMWindowLeak ++DOCSHELL 13acc00 == 2 [pid = 3420] [id = 1]
[task 2021-03-27T10:57:49.721Z] 10:57:49     INFO - GECKO(4968) | [Child 3420: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 3 (1381900) [pid = 3420] [serial = 4] [outer = 0]
[task 2021-03-27T10:57:49.722Z] 10:57:49     INFO - GECKO(4968) | [Child 3420: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 4 (74b7400) [pid = 3420] [serial = 5] [outer = 1381900]
[task 2021-03-27T10:57:49.742Z] 10:57:49     INFO - TEST-START | browser/base/content/test/performance/browser_tabdetach.js
[task 2021-03-27T10:57:49.785Z] 10:57:49     INFO - GECKO(4968) | [Child 2932: Main Thread]: I/DocShellAndDOMWindowLeak ++DOCSHELL fb1000 == 3 [pid = 2932] [id = 7]
[task 2021-03-27T10:57:49.785Z] 10:57:49     INFO - GECKO(4968) | [Child 2932: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 8 (f66f00) [pid = 2932] [serial = 20] [outer = 0]
[task 2021-03-27T10:57:49.786Z] 10:57:49     INFO - GECKO(4968) | [Child 2932: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 9 (72b2400) [pid = 2932] [serial = 21] [outer = f66f00]
[task 2021-03-27T10:57:49.821Z] 10:57:49     INFO - GECKO(4968) | [Parent 1540, Main Thread] WARNING: WebProgress Ignored: BrowsingContext is null or discarded: file /builds/worker/checkouts/gecko/dom/ipc/BrowserParent.cpp:2860
[task 2021-03-27T10:57:49.856Z] 10:57:49     INFO - GECKO(4968) | [Child 2932: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 10 (72bdc00) [pid = 2932] [serial = 22] [outer = f66f00]
[task 2021-03-27T10:57:50.031Z] 10:57:50     INFO - GECKO(4968) | [Parent 1540, Main Thread] WARNING: Remote iframe not rendered: file /builds/worker/checkouts/gecko/layout/generic/nsSubDocumentFrame.cpp:1343
[task 2021-03-27T10:57:50.154Z] 10:57:50     INFO - GECKO(4968) | [Child 3420: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 13aac00 == 1 [pid = 3420] [id = 0] [url = about:newtab]
[task 2021-03-27T10:57:50.154Z] 10:57:50     INFO - GECKO(4968) | [Child 3420: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 3 (1381800) [pid = 3420] [serial = 1] [outer = 0] [url = about:newtab]
[task 2021-03-27T10:57:50.349Z] 10:57:50     INFO - GECKO(4968) | [Parent 1540, Main Thread] WARNING: Remote iframe not rendered: file /builds/worker/checkouts/gecko/layout/generic/nsSubDocumentFrame.cpp:1343
[task 2021-03-27T10:57:50.424Z] 10:57:50     INFO - GECKO(4968) | [Parent 1540, Main Thread] WARNING: Remote iframe not rendered: file /builds/worker/checkouts/gecko/layout/generic/nsSubDocumentFrame.cpp:1343
[task 2021-03-27T10:57:50.463Z] 10:57:50     INFO - GECKO(4968) | [Parent 1540, Main Thread] WARNING: Remote iframe not rendered: file /builds/worker/checkouts/gecko/layout/generic/nsSubDocumentFrame.cpp:1343
[task 2021-03-27T10:57:50.524Z] 10:57:50     INFO - GECKO(4968) | [Parent 1540: Main Thread]: I/DocShellAndDOMWindowLeak ++DOCSHELL 14dabc00 == 8 [pid = 1540] [id = 8]
[task 2021-03-27T10:57:50.524Z] 10:57:50     INFO - GECKO(4968) | [Parent 1540: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 15 (f26f800) [pid = 1540] [serial = 18] [outer = 0]
[task 2021-03-27T10:57:50.524Z] 10:57:50     INFO - GECKO(4968) | [Parent 1540: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 16 (14db8c00) [pid = 1540] [serial = 19] [outer = f26f800]
[task 2021-03-27T10:57:50.539Z] 10:57:50     INFO - GECKO(4968) | [Parent 1540, Main Thread] WARNING: NS_ENSURE_TRUE(uri) failed: file /builds/worker/checkouts/gecko/caps/BasePrincipal.cpp:1327
[task 2021-03-27T10:57:50.574Z] 10:57:50     INFO - GECKO(4968) | [Parent 1540, Main Thread] WARNING: Remote iframe not rendered: file /builds/worker/checkouts/gecko/layout/generic/nsSubDocumentFrame.cpp:1343
[task 2021-03-27T10:57:50.634Z] 10:57:50     INFO - GECKO(4968) | [Parent 1540, Main Thread] WARNING: Remote iframe not rendered: file /builds/worker/checkouts/gecko/layout/generic/nsSubDocumentFrame.cpp:1343
[task 2021-03-27T10:57:50.817Z] 10:57:50     INFO - GECKO(4968) | [Parent 1540, Main Thread] WARNING: Remote iframe not rendered: file /builds/worker/checkouts/gecko/layout/generic/nsSubDocumentFrame.cpp:1343
[task 2021-03-27T10:57:50.852Z] 10:57:50     INFO - GECKO(4968) | [Parent 1540, Main Thread] WARNING: Remote iframe not rendered: file /builds/worker/checkouts/gecko/layout/generic/nsSubDocumentFrame.cpp:1343
[task 2021-03-27T10:57:50.931Z] 10:57:50     INFO - GECKO(4968) | [Parent 1540, Main Thread] WARNING: Remote iframe not rendered: file /builds/worker/checkouts/gecko/layout/generic/nsSubDocumentFrame.cpp:1343
[task 2021-03-27T10:57:50.970Z] 10:57:50     INFO - GECKO(4968) | [Parent 1540, Main Thread] WARNING: NS_ENSURE_TRUE(rootFrame) failed: file /builds/worker/checkouts/gecko/dom/base/nsGlobalWindowOuter.cpp:4250
[task 2021-03-27T10:57:51.157Z] 10:57:51     INFO - GECKO(4968) | [Parent 1540: Main Thread]: I/DocShellAndDOMWindowLeak ++DOCSHELL 19e50c00 == 9 [pid = 1540] [id = 9]
[task 2021-03-27T10:57:51.157Z] 10:57:51     INFO - GECKO(4968) | [Parent 1540: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 17 (128e9f00) [pid = 1540] [serial = 20] [outer = 0]
[task 2021-03-27T10:57:51.212Z] 10:57:51     INFO - GECKO(4968) | [Child 2932: Main Thread]: I/DocShellAndDOMWindowLeak ++DOCSHELL a17b400 == 4 [pid = 2932] [id = 8]
[task 2021-03-27T10:57:51.212Z] 10:57:51     INFO - GECKO(4968) | [Child 2932: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 11 (a14a500) [pid = 2932] [serial = 23] [outer = 0]
[task 2021-03-27T10:57:51.212Z] 10:57:51     INFO - GECKO(4968) | [Child 2932: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 12 (a186800) [pid = 2932] [serial = 24] [outer = a14a500]
[task 2021-03-27T10:57:51.272Z] 10:57:51     INFO - GECKO(4968) | [Parent 1540, Main Thread] WARNING: NS_ENSURE_TRUE(presShell) failed: file /builds/worker/checkouts/gecko/dom/base/nsGlobalWindowOuter.cpp:4248
[task 2021-03-27T10:57:51.287Z] 10:57:51     INFO - GECKO(4968) | [Parent 1540: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 18 (14db7800) [pid = 1540] [serial = 21] [outer = 128e9f00]
[task 2021-03-27T10:57:51.362Z] 10:57:51     INFO - GECKO(4968) | [Parent 1540, Compositor] WARNING: ConnectReferentLayer failed - Incorrect LayerManager: file /builds/worker/checkouts/gecko/gfx/layers/Layers.h:1960
[task 2021-03-27T10:57:51.425Z] 10:57:51     INFO - GECKO(4968) | [Child 2932, Main Thread] WARNING: Scrolled rect smaller than scrollport?: file /builds/worker/checkouts/gecko/layout/generic/nsGfxScrollFrame.cpp:7064
[task 2021-03-27T10:57:51.425Z] 10:57:51     INFO - GECKO(4968) | [Child 2932, Main Thread] WARNING: Scrolled rect smaller than scrollport?: file /builds/worker/checkouts/gecko/layout/generic/nsGfxScrollFrame.cpp:7067
[task 2021-03-27T10:57:51.486Z] 10:57:51     INFO - GECKO(4968) | [Parent 1540, Compositor] WARNING: ConnectReferentLayer failed - Incorrect LayerManager: file /builds/worker/checkouts/gecko/gfx/layers/Layers.h:1960
[task 2021-03-27T10:57:51.773Z] 10:57:51     INFO - GECKO(4968) | [Parent 1540, Main Thread] WARNING: Remote iframe not rendered: file /builds/worker/checkouts/gecko/layout/generic/nsSubDocumentFrame.cpp:1343
[task 2021-03-27T10:57:51.833Z] 10:57:51     INFO - GECKO(4968) | [Parent 1540, Main Thread] WARNING: Remote iframe not rendered: file /builds/worker/checkouts/gecko/layout/generic/nsSubDocumentFrame.cpp:1343
[task 2021-03-27T10:57:51.868Z] 10:57:51     INFO - GECKO(4968) | [Parent 1540, Main Thread] WARNING: Remote iframe not rendered: file /builds/worker/checkouts/gecko/layout/generic/nsSubDocumentFrame.cpp:1343
[task 2021-03-27T10:57:52.028Z] 10:57:52     INFO - GECKO(4968) | [Child 2932: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 72bf800 == 3 [pid = 2932] [id = 6] [url = about:blank]
<...>
[task 2021-03-27T10:57:59.540Z] 10:57:59     INFO - TEST-PASS | browser/base/content/test/performance/browser_tabdetach.js | Tabstrip needs to be wide enough to accomodate at least 1 more tab without overflowing. - true == true - 
[task 2021-03-27T10:57:59.540Z] 10:57:59     INFO - Buffered messages finished
[task 2021-03-27T10:57:59.540Z] 10:57:59     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/performance/browser_tabdetach.js | uncaught exception - uncaught exception: out of memory at undefined
[task 2021-03-27T10:57:59.540Z] 10:57:59     INFO - Stack trace:
[task 2021-03-27T10:57:59.540Z] 10:57:59     INFO - chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:simpletestOnerror:2112
[task 2021-03-27T10:57:59.540Z] 10:57:59     INFO - GECKO(4968) | JavaScript error: , line 0: uncaught exception: out of memory
[task 2021-03-27T10:57:59.540Z] 10:57:59     INFO - GECKO(4968) | [Parent 1540, Main Thread] WARNING: Remote iframe not rendered: file /builds/worker/checkouts/gecko/layout/generic/nsSubDocumentFrame.cpp:1343
[task 2021-03-27T10:57:59.540Z] 10:57:59     INFO - Not taking screenshot here: see the one that was previously logged
[task 2021-03-27T10:57:59.541Z] 10:57:59     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/performance/browser_tabdetach.js | uncaught exception - uncaught exception: out of memory at undefined
[task 2021-03-27T10:57:59.541Z] 10:57:59     INFO - Stack trace:
[task 2021-03-27T10:57:59.541Z] 10:57:59     INFO - chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:simpletestOnerror:2112
[task 2021-03-27T10:57:59.541Z] 10:57:59     INFO - GECKO(4968) | JavaScript error: , line 0: uncaught exception: out of memory
[task 2021-03-27T10:57:59.556Z] 10:57:59     INFO - GECKO(4968) | [Parent 1540, Main Thread] WARNING: Remote iframe not rendered: file /builds/worker/checkouts/gecko/layout/generic/nsSubDocumentFrame.cpp:1343
[task 2021-03-27T10:57:59.556Z] 10:57:59     INFO - Not taking screenshot here: see the one that was previously logged
[task 2021-03-27T10:57:59.557Z] 10:57:59     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/performance/browser_tabdetach.js | uncaught exception - uncaught exception: out of memory at undefined
[task 2021-03-27T10:57:59.557Z] 10:57:59     INFO - Stack trace:
[task 2021-03-27T10:57:59.557Z] 10:57:59     INFO - chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:simpletestOnerror:2112
[task 2021-03-27T10:57:59.557Z] 10:57:59     INFO - GECKO(4968) | JavaScript error: , line 0: uncaught exception: out of memory
[task 2021-03-27T10:57:59.600Z] 10:57:59     INFO - GECKO(4968) | [Parent 1540, Main Thread] WARNING: Remote iframe not rendered: file /builds/worker/checkouts/gecko/layout/generic/nsSubDocumentFrame.cpp:1343
[task 2021-03-27T10:57:59.603Z] 10:57:59     INFO - Not taking screenshot here: see the one that was previously logged
[task 2021-03-27T10:57:59.603Z] 10:57:59     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/performance/browser_tabdetach.js | uncaught exception - uncaught exception: out of memory at undefined
[task 2021-03-27T10:57:59.603Z] 10:57:59     INFO - Stack trace:
[task 2021-03-27T10:57:59.603Z] 10:57:59     INFO - chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:simpletestOnerror:2112
[task 2021-03-27T10:57:59.603Z] 10:57:59     INFO - GECKO(4968) | JavaScript error: , line 0: uncaught exception: out of memory
[task 2021-03-27T10:57:59.646Z] 10:57:59     INFO - GECKO(4968) | [Parent 1540, Main Thread] WARNING: Remote iframe not rendered: file /builds/worker/checkouts/gecko/layout/generic/nsSubDocumentFrame.cpp:1343
[task 2021-03-27T10:57:59.649Z] 10:57:59     INFO - Not taking screenshot here: see the one that was previously logged
[task 2021-03-27T10:57:59.649Z] 10:57:59     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/performance/browser_tabdetach.js | uncaught exception - uncaught exception: out of memory at undefined
[task 2021-03-27T10:57:59.649Z] 10:57:59     INFO - Stack trace:
[task 2021-03-27T10:57:59.649Z] 10:57:59     INFO - chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:simpletestOnerror:2112
[task 2021-03-27T10:57:59.649Z] 10:57:59     INFO - GECKO(4968) | JavaScript error: , line 0: uncaught exception: out of memory
[task 2021-03-27T10:57:59.696Z] 10:57:59     INFO - GECKO(4968) | [Parent 1540, Main Thread] WARNING: Remote iframe not rendered: file /builds/worker/checkouts/gecko/layout/generic/nsSubDocumentFrame.cpp:1343
[task 2021-03-27T10:57:59.696Z] 10:57:59     INFO - Not taking screenshot here: see the one that was previously logged
[task 2021-03-27T10:57:59.696Z] 10:57:59     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/performance/browser_tabdetach.js | uncaught exception - uncaught exception: out of memory at undefined
[task 2021-03-27T10:57:59.697Z] 10:57:59     INFO - Stack trace:
[task 2021-03-27T10:57:59.697Z] 10:57:59     INFO - chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:simpletestOnerror:2112
[task 2021-03-27T10:57:59.697Z] 10:57:59     INFO - GECKO(4968) | JavaScript error: , line 0: uncaught exception: out of memory
[task 2021-03-27T10:57:59.740Z] 10:57:59     INFO - GECKO(4968) | [Parent 1540, Main Thread] WARNING: Remote iframe not rendered: file /builds/worker/checkouts/gecko/layout/generic/nsSubDocumentFrame.cpp:1343
[task 2021-03-27T10:57:59.743Z] 10:57:59     INFO - Not taking screenshot here: see the one that was previously logged
[task 2021-03-27T10:57:59.743Z] 10:57:59     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/performance/browser_tabdetach.js | uncaught exception - uncaught exception: out of memory at undefined
[task 2021-03-27T10:57:59.743Z] 10:57:59     INFO - Stack trace:
[task 2021-03-27T10:57:59.743Z] 10:57:59     INFO - chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:simpletestOnerror:2112
[task 2021-03-27T10:57:59.743Z] 10:57:59     INFO - GECKO(4968) | JavaScript error: , line 0: uncaught exception: out of memory
[task 2021-03-27T10:57:59.758Z] 10:57:59     INFO - GECKO(4968) | [Parent 1540, Main Thread] WARNING: Remote iframe not rendered: file /builds/worker/checkouts/gecko/layout/generic/nsSubDocumentFrame.cpp:1343
[task 2021-03-27T10:57:59.758Z] 10:57:59     INFO - Not taking screenshot here: see the one that was previously logged
[task 2021-03-27T10:57:59.758Z] 10:57:59     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/performance/browser_tabdetach.js | uncaught exception - uncaught exception: out of memory at undefined
[task 2021-03-27T10:57:59.758Z] 10:57:59     INFO - Stack trace:
[task 2021-03-27T10:57:59.758Z] 10:57:59     INFO - chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:simpletestOnerror:2112
[task 2021-03-27T10:57:59.758Z] 10:57:59     INFO - GECKO(4968) | JavaScript error: , line 0: uncaught exception: out of memory
[task 2021-03-27T10:57:59.785Z] 10:57:59     INFO - GECKO(4968) | [Parent 1540, Main Thread] WARNING: NS_ENSURE_TRUE(rootFrame) failed: file /builds/worker/checkouts/gecko/dom/base/nsGlobalWindowOuter.cpp:4250
[task 2021-03-27T10:57:59.840Z] 10:57:59     INFO - GECKO(4968) | [Parent 1540, Main Thread] WARNING: Remote iframe not rendered: file /builds/worker/checkouts/gecko/layout/generic/nsSubDocumentFrame.cpp:1343
[task 2021-03-27T10:57:59.840Z] 10:57:59     INFO - Not taking screenshot here: see the one that was previously logged
[task 2021-03-27T10:57:59.840Z] 10:57:59     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/performance/browser_tabdetach.js | uncaught exception - uncaught exception: out of memory at undefined
[task 2021-03-27T10:57:59.840Z] 10:57:59     INFO - Stack trace:
[task 2021-03-27T10:57:59.840Z] 10:57:59     INFO - chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:simpletestOnerror:2112
[task 2021-03-27T10:57:59.841Z] 10:57:59     INFO - GECKO(4968) | JavaScript error: , line 0: uncaught exception: out of memory
[task 2021-03-27T10:57:59.876Z] 10:57:59     INFO - Console message: [JavaScript Error: "uncaught exception: out of memory"]
[task 2021-03-27T10:57:59.876Z] 10:57:59     INFO - Console message: [JavaScript Error: "uncaught exception: out of memory"]
[task 2021-03-27T10:57:59.877Z] 10:57:59     INFO - Console message: [JavaScript Error: "uncaught exception: out of memory"]
[task 2021-03-27T10:57:59.877Z] 10:57:59     INFO - Console message: [JavaScript Error: "uncaught exception: out of memory"]
[task 2021-03-27T10:57:59.877Z] 10:57:59     INFO - Console message: [JavaScript Error: "uncaught exception: out of memory"]
[task 2021-03-27T10:57:59.877Z] 10:57:59     INFO - Console message: [JavaScript Error: "uncaught exception: out of memory"]
[task 2021-03-27T10:57:59.877Z] 10:57:59     INFO - Console message: [JavaScript Error: "uncaught exception: out of memory"]
[task 2021-03-27T10:57:59.877Z] 10:57:59     INFO - Console message: [JavaScript Error: "uncaught exception: out of memory"]
[task 2021-03-27T10:57:59.878Z] 10:57:59     INFO - Console message: [JavaScript Error: "uncaught exception: out of memory"]
[task 2021-03-27T10:58:00.045Z] 10:58:00     INFO - GECKO(4968) | [Parent 1540, Main Thread] WARNING: Remote iframe not rendered: file /builds/worker/checkouts/gecko/layout/generic/nsSubDocumentFrame.cpp:1343
[task 2021-03-27T10:58:00.045Z] 10:58:00     INFO - Not taking screenshot here: see the one that was previously logged
[task 2021-03-27T10:58:00.045Z] 10:58:00     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/performance/browser_tabdetach.js | uncaught exception - uncaught exception: out of memory at undefined
[task 2021-03-27T10:58:00.045Z] 10:58:00     INFO - Stack trace:
[task 2021-03-27T10:58:00.045Z] 10:58:00     INFO - chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:simpletestOnerror:2112
[task 2021-03-27T10:58:00.045Z] 10:58:00     INFO - GECKO(4968) | JavaScript error: , line 0: uncaught exception: out of memory
[task 2021-03-27T10:58:00.120Z] 10:58:00     INFO - GECKO(4968) | [Child 2932, Main Thread] WARNING: early callback, or time went backwards: '!aAllowIdleDispatch', file /builds/worker/checkouts/gecko/xpcom/threads/IdleTaskRunner.cpp:179
[task 2021-03-27T10:58:00.120Z] 10:58:00     INFO - GECKO(4968) | [Parent 1540: Main Thread]: I/DocShellAndDOMWindowLeak ++DOCSHELL 1f1ea000 == 10 [pid = 1540] [id = 11]
[task 2021-03-27T10:58:00.120Z] 10:58:00     INFO - GECKO(4968) | [Parent 1540: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 21 (1658c200) [pid = 1540] [serial = 24] [outer = 0]
[task 2021-03-27T10:58:00.175Z] 10:58:00     INFO - GECKO(4968) | [Child 4656: Main Thread]: I/DocShellAndDOMWindowLeak ++DOCSHELL 71ba800 == 3 [pid = 4656] [id = 3]
[task 2021-03-27T10:58:00.175Z] 10:58:00     INFO - GECKO(4968) | [Child 4656: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 9 (7192900) [pid = 4656] [serial = 10] [outer = 0]
[task 2021-03-27T10:58:00.175Z] 10:58:00     INFO - GECKO(4968) | [Child 4656: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 10 (71bf800) [pid = 4656] [serial = 11] [outer = 7192900]
[task 2021-03-27T10:58:00.176Z] 10:58:00     INFO - GECKO(4968) | [Child 2932: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 6 (72b3000) [pid = 2932] [serial = 26] [outer = 0] [url = about:blank]
[task 2021-03-27T10:58:00.176Z] 10:58:00     INFO - GECKO(4968) | [Child 2932: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 5 (72bdc00) [pid = 2932] [serial = 22] [outer = 0] [url = about:blank]
[task 2021-03-27T10:58:00.216Z] 10:58:00     INFO - GECKO(4968) | [Parent 1540, Main Thread] WARNING: Remote iframe not rendered: file /builds/worker/checkouts/gecko/layout/generic/nsSubDocumentFrame.cpp:1343
[task 2021-03-27T10:58:00.216Z] 10:58:00     INFO - Not taking screenshot here: see the one that was previously logged
[task 2021-03-27T10:58:00.216Z] 10:58:00     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/performance/browser_tabdetach.js | uncaught exception - uncaught exception: out of memory at undefined
[task 2021-03-27T10:58:00.216Z] 10:58:00     INFO - Stack trace:
[task 2021-03-27T10:58:00.217Z] 10:58:00     INFO - chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:simpletestOnerror:2112
[task 2021-03-27T10:58:00.217Z] 10:58:00     INFO - GECKO(4968) | JavaScript error: , line 0: uncaught exception: out of memory
[task 2021-03-27T10:58:00.232Z] 10:58:00     INFO - GECKO(4968) | [Child 5692: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 9 (a25dc00) [pid = 5692] [serial = 10] [outer = 0] [url = about:blank]
[task 2021-03-27T10:58:00.232Z] 10:58:00     INFO - GECKO(4968) | [Child 5692: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 8 (72c7000) [pid = 5692] [serial = 5] [outer = 0] [url = about:blank]
[task 2021-03-27T10:58:00.232Z] 10:58:00     INFO - GECKO(4968) | [Child 5692: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 7 (72be400) [pid = 5692] [serial = 2] [outer = 0] [url = about:blank]
[task 2021-03-27T10:58:00.232Z] 10:58:00     INFO - GECKO(4968) | [Child 5692: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 6 (72c0400) [pid = 5692] [serial = 8] [outer = 0] [url = about:blank]
[task 2021-03-27T10:58:00.232Z] 10:58:00     INFO - GECKO(4968) | [Child 5692: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 5 (72ca800) [pid = 5692] [serial = 6] [outer = 0] [url = about:blank]
[task 2021-03-27T10:58:00.233Z] 10:58:00     INFO - GECKO(4968) | [Child 5692: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 4 (72c4c00) [pid = 5692] [serial = 4] [outer = 0] [url = about:blank]
[task 2021-03-27T10:58:00.268Z] 10:58:00     INFO - GECKO(4968) | [Child 5864: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 9 (6cc4800) [pid = 5864] [serial = 5] [outer = 0] [url = about:blank]
[task 2021-03-27T10:58:00.268Z] 10:58:00     INFO - GECKO(4968) | [Child 5864: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 8 (6cc1800) [pid = 5864] [serial = 4] [outer = 0] [url = about:blank]
[task 2021-03-27T10:58:00.268Z] 10:58:00     INFO - GECKO(4968) | [Child 5864: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 7 (6cc7c00) [pid = 5864] [serial = 6] [outer = 0] [url = about:blank]
[task 2021-03-27T10:58:00.269Z] 10:58:00     INFO - GECKO(4968) | [Child 5864: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 6 (6cbe000) [pid = 5864] [serial = 8] [outer = 0] [url = about:blank]
[task 2021-03-27T10:58:00.269Z] 10:58:00     INFO - GECKO(4968) | [Child 5864: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 5 (6cbb000) [pid = 5864] [serial = 2] [outer = 0] [url = about:blank]
[task 2021-03-27T10:58:00.269Z] 10:58:00     INFO - GECKO(4968) | [Parent 1540, Main Thread] WARNING: Remote iframe not rendered: file /builds/worker/checkouts/gecko/layout/generic/nsSubDocumentFrame.cpp:1343
[task 2021-03-27T10:58:00.270Z] 10:58:00     INFO - Not taking screenshot here: see the one that was previously logged
[task 2021-03-27T10:58:00.270Z] 10:58:00     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/performance/browser_tabdetach.js | uncaught exception - uncaught exception: out of memory at undefined
[task 2021-03-27T10:58:00.270Z] 10:58:00     INFO - Stack trace:
[task 2021-03-27T10:58:00.270Z] 10:58:00     INFO - chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:simpletestOnerror:2112
[task 2021-03-27T10:58:00.270Z] 10:58:00     INFO - GECKO(4968) | JavaScript error: , line 0: uncaught exception: out of memory```