Filed by: ccozmuta [at] mozilla.com
Parsed log: https://treeherder.mozilla.org/logviewer?job_id=374033269&repo=autoland
Full log: https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/e9if35jaR3STZmzratapIg/runs/0/artifacts/public/logs/live_backing.log

[task 2022-04-11T03:30:21.564Z] 03:30:21     INFO - TEST-PASS | devtools/client/webconsole/test/browser/browser_webconsole_cors_errors.js | The cors message has the expected classname - 
[task 2022-04-11T03:30:21.564Z] 03:30:21     INFO - TEST-PASS | devtools/client/webconsole/test/browser/browser_webconsole_cors_errors.js | There is a Learn more link displayed - 
[task 2022-04-11T03:30:21.565Z] 03:30:21     INFO - TEST-PASS | devtools/client/webconsole/test/browser/browser_webconsole_cors_errors.js | Click on the link opens the expected page - 
[task 2022-04-11T03:30:21.566Z] 03:30:21     INFO - Test CORSMissingAllowHeaderFromPreflight
[task 2022-04-11T03:30:21.567Z] 03:30:21     INFO - Buffered messages logged at 03:27:31
[task 2022-04-11T03:30:21.568Z] 03:30:21     INFO - Console message: [JavaScript Error: "Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at http://mochi.test:8888/browser/devtools/client/webconsole/test/browser/sjs_cors-test-server.sjs?corsErrorCategory=CORSMissingAllowHeaderFromPreflight. (Reason: header ‘xyz’ is not allowed according to header ‘Access-Control-Allow-Headers’ from CORS preflight response)."]
[task 2022-04-11T03:30:21.569Z] 03:30:21     INFO - Console message: [JavaScript Error: "Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at http://mochi.test:8888/browser/devtools/client/webconsole/test/browser/sjs_cors-test-server.sjs?corsErrorCategory=CORSMissingAllowHeaderFromPreflight. (Reason: CORS request did not succeed). Status code: (null)."]
[task 2022-04-11T03:30:21.570Z] 03:30:21     INFO - Console message: [JavaScript Error: "TypeError: NetworkError when attempting to fetch resource."]
[task 2022-04-11T03:30:21.570Z] 03:30:21     INFO - Buffered messages logged at 03:28:43
[task 2022-04-11T03:30:21.572Z] 03:30:21     INFO - Console message: [JavaScript Error: "Invalid ETag value "undefined"" {file: "resource://services-settings/SyncHistory.jsm" line: 50}]
[task 2022-04-11T03:30:21.572Z] 03:30:21     INFO - store@resource://services-settings/SyncHistory.jsm:50:13
[task 2022-04-11T03:30:21.573Z] 03:30:21     INFO - async*remoteSettingsFunction/remoteSettings.pollChanges@resource://services-settings/remote-settings.js:429:8
[task 2022-04-11T03:30:21.573Z] 03:30:21     INFO - async*notify@resource://services-settings/RemoteSettingsComponents.jsm:22:20
[task 2022-04-11T03:30:21.573Z] 03:30:21     INFO - TM_notify/<@resource://gre/modules/UpdateTimerManager.jsm:223:50
[task 2022-04-11T03:30:21.573Z] 03:30:21     INFO - TM_notify@resource://gre/modules/UpdateTimerManager.jsm:294:7
[task 2022-04-11T03:30:21.573Z] 03:30:21     INFO - 
[task 2022-04-11T03:30:21.574Z] 03:30:21     INFO - Buffered messages finished
[task 2022-04-11T03:30:21.575Z] 03:30:21     INFO - TEST-UNEXPECTED-FAIL | devtools/client/webconsole/test/browser/browser_webconsole_cors_errors.js | Test timed out - 
[task 2022-04-11T03:30:21.575Z] 03:30:21     INFO - GECKO(1564) | [Parent 1564, Main Thread] WARNING: NS_ENSURE_TRUE(mPresShell) failed: file /builds/worker/checkouts/gecko/layout/generic/nsFrameSelection.cpp:1601
[task 2022-04-11T03:30:22.448Z] 03:30:22     INFO - Removing tab.
[task 2022-04-11T03:30:22.449Z] 03:30:22     INFO - Waiting for event: 'TabClose' on [object XULElement].
[task 2022-04-11T03:30:22.494Z] 03:30:22     INFO - Got event: 'TabClose' on [object XULElement].
[task 2022-04-11T03:30:22.503Z] 03:30:22     INFO - GECKO(1564) | console.warn: "IGNORED REDUX ACTION:" "AUTOCOMPLETE_CLEAR"
[task 2022-04-11T03:30:22.515Z] 03:30:22     INFO - GECKO(1564) | [Parent 1564, Main Thread] WARNING: '!inner', file /builds/worker/checkouts/gecko/dom/ipc/jsactor/JSWindowActorProtocol.cpp:184
[task 2022-04-11T03:30:22.516Z] 03:30:22     INFO - GECKO(1564) | [Parent 1564, Main Thread] WARNING: '!inner', file /builds/worker/checkouts/gecko/dom/ipc/jsactor/JSWindowActorProtocol.cpp:184
[task 2022-04-11T03:30:22.524Z] 03:30:22     INFO - Tab removed and finished closing
[task 2022-04-11T03:30:22.540Z] 03:30:22     INFO - GECKO(1564) | JavaScript error: , line 0: NotFoundError: No such JSWindowActor 'DevToolsFrame'
[task 2022-04-11T03:30:22.543Z] 03:30:22     INFO - GECKO(1564) | [Parent 1564: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 7ff3e58e0000 == 6 [pid = 1564] [id = 123] [url = chrome://devtools/content/webconsole/index.html]
[task 2022-04-11T03:30:22.606Z] 03:30:22     INFO - Console message: [JavaScript Error: "NotFoundError: No such JSWindowActor 'DevToolsFrame'"]
[task 2022-04-11T03:30:22.609Z] 03:30:22     INFO - TEST-PASS | devtools/client/webconsole/test/browser/browser_webconsole_cors_errors.js | The main process DevToolsServer has no pending connection when the test ends - 
[task 2022-04-11T03:30:22.661Z] 03:30:22     INFO - GECKO(1564) | [Parent 1564, GMPThread] WARNING: Failed to delete GMP storage directory: file /builds/worker/checkouts/gecko/dom/media/gmp/GMPServiceParent.cpp:1727
[task 2022-04-11T03:30:22.677Z] 03:30:22     INFO - GECKO(1564) | ###!!! [Parent][PBackgroundParent] Error: RunMessage(msgname=PRemoteWorkerService::Msg___delete__) Channel closing: too late to send/recv, messages will be lost
[task 2022-04-11T03:30:22.684Z] 03:30:22     INFO - GECKO(1564) | [Child 3004, Main Thread] WARNING: IPC message 'PIdleScheduler::Msg_StartedGC' discarded: actor cannot send: file /builds/worker/checkouts/gecko/ipc/glue/ProtocolUtils.cpp:506
[task 2022-04-11T03:30:22.750Z] 03:30:22     INFO - GECKO(1564) | [Child 3004, Main Thread] WARNING: IPC message 'PIdleScheduler::Msg_DoneGC' discarded: actor cannot send: file /builds/worker/checkouts/gecko/ipc/glue/ProtocolUtils.cpp:506
[task 2022-04-11T03:30:22.752Z] 03:30:22     INFO - GECKO(1564) | [Child 3004, Main Thread] WARNING: IPC message 'PIdleScheduler::Msg_StartedGC' discarded: actor cannot send: file /builds/worker/checkouts/gecko/ipc/glue/ProtocolUtils.cpp:506
[task 2022-04-11T03:30:22.782Z] 03:30:22     INFO - GECKO(1564) | [Child 3004, Main Thread] WARNING: IPC message 'PIdleScheduler::Msg_DoneGC' discarded: actor cannot send: file /builds/worker/checkouts/gecko/ipc/glue/ProtocolUtils.cpp:506
[task 2022-04-11T03:30:22.792Z] 03:30:22     INFO - GECKO(1564) | MEMORY STAT | vsize 3842MB | residentFast 659MB | heapAllocated 306MB
[task 2022-04-11T03:30:22.794Z] 03:30:22     INFO - TEST-OK | devtools/client/webconsole/test/browser/browser_webconsole_cors_errors.js | took 181640ms

:dthayer, since you are the author of the regressor, bug 1753177, could you take a look?
For more information, please visit auto_nag documentation.

Set release status flags based on info from the regressing bug 1753177

There have been 36 total failures in the last 7 days, recent failure log.
Affected platforms are:

• linux1804-64-qr
• linux1804-64-shippable-qr
• windows10-64-2004-shippable-qr