Bug: Intermittent browser/base/content/test/about/browser_aboutNetError_trr.js | single tracking bug
Status: RESOLVED
Priority: P5
Resolution: FIXED
Created: 2023-04-27 18:15:37+00:00
Resolved: 2023-05-08 22:06:45+00:00

**Filed by:** nfay [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer?job_id=413994391&repo=autoland
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/PzB9ws1zTDa_RVcQ8PYRyw/runs/0/artifacts/public/logs/live_backing.log

---
```
[task 2023-04-27T17:15:53.863Z] 17:15:53     INFO - TEST-START | browser/base/content/test/about/browser_aboutNetError_trr.js
[task 2023-04-27T17:15:53.893Z] 17:15:53     INFO - GECKO(1580) | [Child 3381: Main Thread]: I/DocShellAndDOMWindowLeak ++DOCSHELL 7ff2ef525c00 == 1 [pid = 3381] [id = 0]
[task 2023-04-27T17:15:53.896Z] 17:15:53     INFO - GECKO(1580) | [Child 3381: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 1 (7ff2f46c1470) [pid = 3381] [serial = 1] [outer = 0]
[task 2023-04-27T17:15:53.897Z] 17:15:53     INFO - GECKO(1580) | [Child 3381: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 2 (7ff2ef526400) [pid = 3381] [serial = 2] [outer = 7ff2f46c1470]
[task 2023-04-27T17:15:54.114Z] 17:15:54     INFO - GECKO(1580) | [Child 3381: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 3 (7ff2ef528c00) [pid = 3381] [serial = 3] [outer = 7ff2f46c1470]
[task 2023-04-27T17:15:54.172Z] 17:15:54     INFO - GECKO(1580) | [Child 3381, Main Thread] WARNING: NS_ENSURE_SUCCESS(rv, NS_ERROR_INVALID_ARG) failed with result 0x80520012 (NS_ERROR_FILE_NOT_FOUND): file /builds/worker/checkouts/gecko/intl/l10n/L10nRegistry.cpp:385
[task 2023-04-27T17:15:54.173Z] 17:15:54     INFO - GECKO(1580) | [Child 3381, Main Thread] WARNING: NS_ENSURE_SUCCESS(rv, NS_ERROR_INVALID_ARG) failed with result 0x80520012 (NS_ERROR_FILE_NOT_FOUND): file /builds/worker/checkouts/gecko/intl/l10n/L10nRegistry.cpp:385
[task 2023-04-27T17:15:54.582Z] 17:15:54     INFO - GECKO(1580) | [Child 3382: Main Thread]: I/DocShellAndDOMWindowLeak ++DOCSHELL 7fb6f5f25c00 == 1 [pid = 3382] [id = 0]
[task 2023-04-27T17:15:54.582Z] 17:15:54     INFO - GECKO(1580) | [Child 3382: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 1 (7fb6fb1c1470) [pid = 3382] [serial = 1] [outer = 0]
[task 2023-04-27T17:15:54.582Z] 17:15:54     INFO - GECKO(1580) | [Child 3382: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 2 (7fb6f5f26400) [pid = 3382] [serial = 2] [outer = 7fb6fb1c1470]
[task 2023-04-27T17:15:54.668Z] 17:15:54     INFO - GECKO(1580) | [Parent 1580, IPDL Background] WARNING: IPC Connection Error: [Parent][PBackgroundParent] RunMessage(msgname=PRemoteWorkerService::Msg___delete__) Channel closing: too late to send/recv, messages will be lost: file /builds/worker/checkouts/gecko/ipc/glue/MessageChannel.cpp:1927
[task 2023-04-27T17:15:54.674Z] 17:15:54     INFO - GECKO(1580) | [Parent 1580, Compositor] WARNING: IPC Connection Error: [Parent][PCompositorManagerParent] RunMessage(msgname=PCompositorBridge::Msg___delete__) Channel closing: too late to send/recv, messages will be lost: file /builds/worker/checkouts/gecko/ipc/glue/MessageChannel.cpp:1927
[task 2023-04-27T17:15:54.678Z] 17:15:54     INFO - GECKO(1580) | [Parent 1580, Compositor] WARNING: IPC Connection Error: [Parent][PImageBridgeParent] RunMessage(msgname=PImageBridge::Msg_WillClose) Channel closing: too late to send/recv, messages will be lost: file /builds/worker/checkouts/gecko/ipc/glue/MessageChannel.cpp:1927
[task 2023-04-27T17:15:54.778Z] 17:15:54     INFO - GECKO(1580) | [Child 3381: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 7ff2ef525c00 == 0 [pid = 3381] [id = 0] [url = https://does-not-exist.test/]
[task 2023-04-27T17:15:54.842Z] 17:15:54     INFO - GECKO(1580) | [Child 3382: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 3 (7fb6f5f28c00) [pid = 3382] [serial = 3] [outer = 7fb6fb1c1470]
[task 2023-04-27T17:15:54.895Z] 17:15:54     INFO - GECKO(1580) | [Child 3381: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 2 (7ff2f46c1470) [pid = 3381] [serial = 1] [outer = 0] [url = about:neterror?e=dnsNotFound&u=https%3A//does-not-exist.test/&c=UTF-8&d=We%20can%E2%80%99t%20connect%20to%20the%20server%20at%20does-not-exist.test.]
[task 2023-04-27T17:15:54.898Z] 17:15:54     INFO - GECKO(1580) | [Child 3381: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 1 (7ff2ef528c00) [pid = 3381] [serial = 3] [outer = 0] [url = about:neterror?e=dnsNotFound&u=https%3A//does-not-exist.test/&c=UTF-8&d=We%20can%E2%80%99t%20connect%20to%20the%20server%20at%20does-not-exist.test.]
[task 2023-04-27T17:15:54.900Z] 17:15:54     INFO - GECKO(1580) | [Child 3381: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 0 (7ff2ef526400) [pid = 3381] [serial = 2] [outer = 0] [url = about:blank]
[task 2023-04-27T17:15:54.900Z] 17:15:54     INFO - GECKO(1580) | [Child 3381, Main Thread] WARNING: Extra shutdown CC: 'i < NORMAL_SHUTDOWN_COLLECTIONS', file /builds/worker/checkouts/gecko/xpcom/base/nsCycleCollector.cpp:3426
[task 2023-04-27T17:15:54.903Z] 17:15:54     INFO - GECKO(1580) | [Child 3381, Main Thread] WARNING: NS_ENSURE_TRUE(InitStaticMembers()) failed: file /builds/worker/workspace/obj-build/dist/include/mozilla/Preferences.h:129
[task 2023-04-27T17:15:54.912Z] 17:15:54     INFO - GECKO(1580) | [Child 3381, Main Thread] WARNING: NS_ENSURE_TRUE(Preferences::InitStaticMembers()) failed: file /builds/worker/checkouts/gecko/modules/libpref/Preferences.cpp:4688
[task 2023-04-27T17:15:54.919Z] 17:15:54     INFO - GECKO(1580) | [Child 3382, Main Thread] WARNING: NS_ENSURE_SUCCESS(rv, NS_ERROR_INVALID_ARG) failed with result 0x80520012 (NS_ERROR_FILE_NOT_FOUND): file /builds/worker/checkouts/gecko/intl/l10n/L10nRegistry.cpp:385
[task 2023-04-27T17:15:54.921Z] 17:15:54     INFO - GECKO(1580) | [Child 3382, Main Thread] WARNING: NS_ENSURE_SUCCESS(rv, NS_ERROR_INVALID_ARG) failed with result 0x80520012 (NS_ERROR_FILE_NOT_FOUND): file /builds/worker/checkouts/gecko/intl/l10n/L10nRegistry.cpp:385
[task 2023-04-27T17:15:55.159Z] 17:15:55     INFO - GECKO(1580) | ### XPCOM_MEM_BLOAT_LOG defined -- logging bloat/leaks to /tmp/tmpjctvy768.mozrunner/runtests_leaks_tab_pid3458.log
[task 2023-04-27T17:15:55.160Z] 17:15:55     INFO - GECKO(1580) | [3458, Main Thread] WARNING: XPCOM_MEM_BLOAT_LOG is set, disabling native allocations.: file /builds/worker/checkouts/gecko/tools/profiler/core/platform.cpp:345
[task 2023-04-27T17:15:55.168Z] 17:15:55     INFO - GECKO(1580) | [Child 3458, Main Thread] WARNING: NS_ENSURE_SUCCESS(rv, rv) failed with result 0x80004005 (NS_ERROR_FAILURE): file /builds/worker/checkouts/gecko/toolkit/xre/nsXREDirProvider.cpp:475
[task 2023-04-27T17:15:55.199Z] 17:15:55     INFO - GECKO(1580) | [Child 3458, Main Thread] WARNING: could not set real-time limit in CubebUtils::InitLibrary: file /builds/worker/checkouts/gecko/dom/media/CubebUtils.cpp:655
[task 2023-04-27T17:15:55.213Z] 17:15:55     INFO - GECKO(1580) | [Child 3458, Main Thread] WARNING: NS_ENSURE_SUCCESS(rv, rv) failed with result 0x80004005 (NS_ERROR_FAILURE): file /builds/worker/checkouts/gecko/toolkit/xre/nsXREDirProvider.cpp:475
[task 2023-04-27T17:15:55.214Z] 17:15:55     INFO - GECKO(1580) | [Child 3458, Main Thread] WARNING: NS_ENSURE_SUCCESS(rv, rv) failed with result 0x80004005 (NS_ERROR_FAILURE): file /builds/worker/checkouts/gecko/toolkit/xre/nsXREDirProvider.cpp:475
[task 2023-04-27T17:15:55.215Z] 17:15:55     INFO - GECKO(1580) | Couldn't convert chrome URL: chrome://branding/locale/brand.properties
[task 2023-04-27T17:15:55.215Z] 17:15:55     INFO - GECKO(1580) | [Child 3458, Main Thread] WARNING: Could not get the program name for a cubeb stream.: 'NS_SUCCEEDED(rv)', file /builds/worker/checkouts/gecko/dom/media/CubebUtils.cpp:400
[task 2023-04-27T17:15:55.273Z] 17:15:55     INFO - GECKO(1580) | [Child 3458, Main Thread] WARNING: NS_ENSURE_SUCCESS(rv, rv) failed with result 0x80004005 (NS_ERROR_FAILURE): file /builds/worker/checkouts/gecko/toolkit/xre/nsXREDirProvider.cpp:475
[task 2023-04-27T17:15:55.337Z] 17:15:55     INFO - GECKO(1580) | [Parent 1580: Main Thread]: I/DocShellAndDOMWindowLeak ++DOCSHELL 7f4c4df63400 == 6 [pid = 1580] [id = 8]
[task 2023-04-27T17:15:55.337Z] 17:15:55     INFO - GECKO(1580) | [Parent 1580: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 11 (7f4c4b096940) [pid = 1580] [serial = 20] [outer = 0]
[task 2023-04-27T17:15:55.339Z] 17:15:55     INFO - GECKO(1580) | [Parent 1580: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 12 (7f4c4dff2c00) [pid = 1580] [serial = 21] [outer = 7f4c4b096940]
[task 2023-04-27T17:15:55.420Z] 17:15:55     INFO - GECKO(1580) | [Child 1699, Main Thread] WARNING: IPC message 'PSessionStore::Msg_SessionStoreUpdate' discarded: actor cannot send: file /builds/worker/checkouts/gecko/ipc/glue/ProtocolUtils.cpp:504
[task 2023-04-27T17:15:55.430Z] 17:15:55     INFO - GECKO(1580) | [Parent 1580: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 13 (7f4c4dfecc00) [pid = 1580] [serial = 22] [outer = 7f4c4b096940]
[task 2023-04-27T17:15:55.612Z] 17:15:55     INFO - GECKO(1580) | [Child 3382: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 4 (7fb6f5765800) [pid = 3382] [serial = 4] [outer = 7fb6fb1c1470]
[task 2023-04-27T17:15:55.936Z] 17:15:55     INFO - GECKO(1580) | ### XPCOM_MEM_BLOAT_LOG defined -- logging bloat/leaks to /tmp/tmpjctvy768.mozrunner/runtests_leaks_tab_pid3477.log
[task 2023-04-27T17:15:55.937Z] 17:15:55     INFO - GECKO(1580) | [3477, Main Thread] WARNING: XPCOM_MEM_BLOAT_LOG is set, disabling native allocations.: file /builds/worker/checkouts/gecko/tools/profiler/core/platform.cpp:345
[task 2023-04-27T17:15:55.948Z] 17:15:55     INFO - GECKO(1580) | [Child 3477, Main Thread] WARNING: NS_ENSURE_SUCCESS(rv, rv) failed with result 0x80004005 (NS_ERROR_FAILURE): file /builds/worker/checkouts/gecko/toolkit/xre/nsXREDirProvider.cpp:475
[task 2023-04-27T17:15:55.986Z] 17:15:55     INFO - GECKO(1580) | [Child 3477, Main Thread] WARNING: could not set real-time limit in CubebUtils::InitLibrary: file /builds/worker/checkouts/gecko/dom/media/CubebUtils.cpp:655
[task 2023-04-27T17:15:55.995Z] 17:15:55     INFO - GECKO(1580) | [Parent 1580: Main Thread]: I/DocShellAndDOMWindowLeak ++DOCSHELL 7f4c50e80000 == 7 [pid = 1580] [id = 9]
[task 2023-04-27T17:15:55.996Z] 17:15:55     INFO - GECKO(1580) | [Parent 1580: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 14 (7f4c5ecc1a40) [pid = 1580] [serial = 23] [outer = 0]
[task 2023-04-27T17:15:55.997Z] 17:15:55     INFO - GECKO(1580) | [Parent 1580: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 15 (7f4c50e80400) [pid = 1580] [serial = 24] [outer = 7f4c5ecc1a40]
[task 2023-04-27T17:15:56.005Z] 17:15:56     INFO - GECKO(1580) | [Child 3477, Main Thread] WARNING: NS_ENSURE_SUCCESS(rv, rv) failed with result 0x80004005 (NS_ERROR_FAILURE): file /builds/worker/checkouts/gecko/toolkit/xre/nsXREDirProvider.cpp:475
[task 2023-04-27T17:15:56.006Z] 17:15:56     INFO - GECKO(1580) | [Child 3477, Main Thread] WARNING: NS_ENSURE_SUCCESS(rv, rv) failed with result 0x80004005 (NS_ERROR_FAILURE): file /builds/worker/checkouts/gecko/toolkit/xre/nsXREDirProvider.cpp:475
[task 2023-04-27T17:15:56.035Z] 17:15:56     INFO - GECKO(1580) | [Child 3477, Main Thread] WARNING: NS_ENSURE_SUCCESS(rv, rv) failed with result 0x80004005 (NS_ERROR_FAILURE): file /builds/worker/checkouts/gecko/toolkit/xre/nsXREDirProvider.cpp:475
[task 2023-04-27T17:15:56.073Z] 17:15:56     INFO - GECKO(1580) | [Child 1699: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 3 (7f5b7da64090) [pid = 1699] [serial = 23] [outer = 0] [url = about:blank]
[task 2023-04-27T17:15:56.289Z] 17:15:56     INFO - GECKO(1580) | [Child 1761: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 4 (7fee2833cc00) [pid = 1761] [serial = 14] [outer = 0] [url = about:blank]
[task 2023-04-27T17:15:56.291Z] 17:15:56     INFO - GECKO(1580) | [Child 1761: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 3 (7fee28336800) [pid = 1761] [serial = 17] [outer = 0] [url = about:blank]
[task 2023-04-27T17:15:56.292Z] 17:15:56     INFO - GECKO(1580) | [Child 1761: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 2 (7fee28338400) [pid = 1761] [serial = 16] [outer = 0] [url = about:blank]
[task 2023-04-27T17:15:56.300Z] 17:15:56     INFO - GECKO(1580) | [Child 1761: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 7fee28341000 == 0 [pid = 1761] [id = 8] [url = about:blank]
[task 2023-04-27T17:15:56.631Z] 17:15:56     INFO - GECKO(1580) | [Child 3152, Main Thread] WARNING: IPC message 'PSessionStore::Msg_SessionStoreUpdate' discarded: actor cannot send: file /builds/worker/checkouts/gecko/ipc/glue/ProtocolUtils.cpp:504
[task 2023-04-27T17:15:56.657Z] 17:15:56     INFO - GECKO(1580) | [Parent 1580: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 16 (7f4c47db9800) [pid = 1580] [serial = 25] [outer = 7f4c5ecc1a40]
[task 2023-04-27T17:15:57.062Z] 17:15:57     INFO - GECKO(1580) | [Parent 1580, Main Thread] WARNING: NS_ENSURE_SUCCESS(rv, rv) failed with result 0x80004005 (NS_ERROR_FAILURE): file /builds/worker/checkouts/gecko/toolkit/xre/nsXREDirProvider.cpp:475
[task 2023-04-27T17:15:57.153Z] 17:15:57     INFO - GECKO(1580) | [Parent 1580, Main Thread] WARNING: NS_ENSURE_SUCCESS(rv, rv) failed with result 0x80004005 (NS_ERROR_FAILURE): file /builds/worker/checkouts/gecko/toolkit/xre/nsXREDirProvider.cpp:475
[task 2023-04-27T17:15:57.747Z] 17:15:57     INFO - GECKO(1580) | [Child 1699, Main Thread] WARNING: IPC message 'PSessionStore::Msg_SessionStoreUpdate' discarded: actor cannot send: file /builds/worker/checkouts/gecko/ipc/glue/ProtocolUtils.cpp:504
[task 2023-04-27T17:15:59.594Z] 17:15:59     INFO - GECKO(1580) | [Child 1761, Main Thread] WARNING: IPC message 'PSessionStore::Msg_SessionStoreUpdate' discarded: actor cannot send: file /builds/worker/checkouts/gecko/ipc/glue/ProtocolUtils.cpp:504
[task 2023-04-27T17:16:00.119Z] 17:16:00     INFO - GECKO(1580) | [Child 1699: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 2 (7f5b7882ac00) [pid = 1699] [serial = 24] [outer = 0] [url = about:blank]
[task 2023-04-27T17:16:00.397Z] 17:16:00     INFO - GECKO(1580) | [Child 1761: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 1 (7fee2d587c30) [pid = 1761] [serial = 18] [outer = 0] [url = about:blank]
[task 2023-04-27T17:16:03.174Z] 17:16:03     INFO - TEST-INFO | started process screentopng
[task 2023-04-27T17:16:03.353Z] 17:16:03     INFO - TEST-INFO | screentopng: exit 0
[task 2023-04-27T17:16:03.354Z] 17:16:03     INFO - Buffered messages logged at 17:15:53
[task 2023-04-27T17:16:03.355Z] 17:16:03     INFO - Entering test bound exceptionButtonTRROnly
[task 2023-04-27T17:16:03.358Z] 17:16:03     INFO - Buffered messages logged at 17:15:54
[task 2023-04-27T17:16:03.359Z] 17:16:03     INFO - Loading and waiting for the net error
[task 2023-04-27T17:16:03.359Z] 17:16:03     INFO - TEST-PASS | browser/base/content/test/about/browser_aboutNetError_trr.js | Should be showing error page - true == true - 
[task 2023-04-27T17:16:03.359Z] 17:16:03     INFO - TEST-PASS | browser/base/content/test/about/browser_aboutNetError_trr.js | Correct error page title is set - "dns-not-found-trr-only-title2" == "dns-not-found-trr-only-title2" - 
[task 2023-04-27T17:16:03.359Z] 17:16:03     INFO - TEST-PASS | browser/base/content/test/about/browser_aboutNetError_trr.js | Exception button should be hidden for TRR service failures - true == true - 
[task 2023-04-27T17:16:03.359Z] 17:16:03     INFO - Leaving test bound exceptionButtonTRROnly
[task 2023-04-27T17:16:03.359Z] 17:16:03     INFO - Entering test bound TRROnlyExceptionButtonTelemetry
[task 2023-04-27T17:16:03.360Z] 17:16:03     INFO - Loading and waiting for the net error
[task 2023-04-27T17:16:03.360Z] 17:16:03     INFO - Buffered messages logged at 17:15:55
[task 2023-04-27T17:16:03.360Z] 17:16:03     INFO - TEST-PASS | browser/base/content/test/about/browser_aboutNetError_trr.js | Should be showing error page - true == true - 
[task 2023-04-27T17:16:03.360Z] 17:16:03     INFO - TEST-PASS | browser/base/content/test/about/browser_aboutNetError_trr.js | Should open about:preferences#privacy-doh in another tab - 
[task 2023-04-27T17:16:03.361Z] 17:16:03     INFO - Buffered messages logged at 17:15:56
[task 2023-04-27T17:16:03.361Z] 17:16:03     INFO - TEST-PASS | browser/base/content/test/about/browser_aboutNetError_trr.js | ["security.doh.neterror","load","dohwarning","TRROnlyFailure",{"mode":"3","provider_key":"mozilla.cloudflare-dns.com","skip_reason":"TRR_UNKNOWN_CHANNEL_FAILURE"}] deepEqual ["security.doh.neterror","load","dohwarning","TRROnlyFailure",{"mode":"3","provider_key":"mozilla.cloudflare-dns.com","skip_reason":"TRR_UNKNOWN_CHANNEL_FAILURE"}] - 
[task 2023-04-27T17:16:03.361Z] 17:16:03     INFO - Buffered messages finished
[task 2023-04-27T17:16:03.362Z] 17:16:03     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/about/browser_aboutNetError_trr.js | Uncaught exception in test bound TRROnlyExceptionButtonTelemetry - recorded telemetry for clicking buttons - timed out after 50 tries.
[task 2023-04-27T17:16:03.362Z] 17:16:03     INFO - Leaving test bound TRROnlyExceptionButtonTelemetry
[task 2023-04-27T17:16:03.663Z] 17:16:03     INFO - GECKO(1580) | MEMORY STAT | vsize 19557MB | residentFast 518MB | heapAllocated 251MB
[task 2023-04-27T17:16:03.664Z] 17:16:03     INFO - TEST-OK | browser/base/content/test/about/browser_aboutNetError_trr.js | took 9801ms
[task 2023-04-27T17:16:03.666Z] 17:16:03     INFO - Not taking screenshot here: see the one that was previously logged
[task 2023-04-27T17:16:03.675Z] 17:16:03     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/about/browser_aboutNetError_trr.js | Found an unexpected tab at the end of test run: about:preferences#privacy - 
[task 2023-04-27T17:16:03.723Z] 17:16:03     INFO - GECKO(1580) | [Parent 1580, Main Thread] WARNING: '!inner', file /builds/worker/checkouts/gecko/dom/ipc/jsactor/JSWindowActorProtocol.cpp:163
[task 2023-04-27T17:16:03.723Z] 17:16:03     INFO - GECKO(1580) | [Parent 1580, Main Thread] WARNING: '!inner', file /builds/worker/checkouts/gecko/dom/ipc/jsactor/JSWindowActorProtocol.cpp:163
[task 2023-04-27T17:16:03.731Z] 17:16:03     INFO - Not taking screenshot here: see the one that was previously logged
[task 2023-04-27T17:16:03.731Z] 17:16:03     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/about/browser_aboutNetError_trr.js | Found an unexpected tab at the end of test run: https://does-not-exist.test/ - 
[task 2023-04-27T17:16:03.771Z] 17:16:03     INFO - GECKO(1580) | [Child 1761: Main Thread]: I/DocShellAndDOMWindowLeak ++DOCSHELL 7fee28338000 == 1 [pid = 1761] [id = 9]
[task 2023-04-27T17:16:03.771Z] 17:16:03     INFO - GECKO(1580) | [Child 1761: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 2 (7fee2d587470) [pid = 1761] [serial = 20] [outer = 0]
[task 2023-04-27T17:16:03.771Z] 17:16:03     INFO - GECKO(1580) | [Child 1761: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 3 (7fee28338400) [pid = 1761] [serial = 21] [outer = 7fee2d587470]
[task 2023-04-27T17:16:03.821Z] 17:16:03     INFO - checking window state
[task 2023-04-27T17:16:03.978Z] 17:16:03     INFO - TEST-START | browser/base/content/test/about/browser_aboutNetError_xfo_iframe.js
```