#[markdown(off)]
Filed by: egao [at] mozilla.com

https://treeherder.mozilla.org/logviewer.html#?job_id=233537292&repo=try

https://queue.taskcluster.net/v1/task/SfwVn5__T_mMW3qCF2kZOg/runs/0/artifacts/public/logs/live_backing.log

Test: dt8

Context:
02:58:34 INFO - TEST-START | devtools/client/webconsole/test/mochitest/browser_jsterm_helper_dollar_dollar.js
02:58:36 INFO - GECKO(5900) | JavaScript error: resource://devtools/shared/protocol.js, line 1299: Error: Connection closed, pending request to server1.conn108.child1/highlighter34, type hideBoxModel failed
02:58:36 INFO - GECKO(5900) | Request stack:
02:58:36 INFO - GECKO(5900) | request@resource://devtools/shared/protocol.js:1386:14
02:58:36 INFO - GECKO(5900) | generateRequestMethods/</frontProto[name]@resource://devtools/shared/protocol.js:1510:19
02:58:36 INFO - GECKO(5900) | unhighlight@resource://devtools/shared/fronts/highlighters.js:91:18
02:58:36 INFO - GECKO(5900) | unHighlightDomElement@resource://devtools/client/webconsole/webconsole-wrapper.js:309:42
02:58:36 INFO - GECKO(5900) | invokeGuardedCallback@resource://devtools/client/shared/vendor/react-dom.js:77:10
02:58:36 INFO - GECKO(5900) | invokeGuardedCallback@resource://devtools/client/shared/vendor/react-dom.js:107:27
02:58:36 INFO - GECKO(5900) | invokeGuardedCallbackAndCatchFirstError@resource://devtools/client/shared/vendor/react-dom.js:121:43
02:58:36 INFO - GECKO(5900) | executeDispatch@resource://devtools/client/shared/vendor/react-dom.js:399:19
02:58:36 INFO - GECKO(5900) | executeDispatchesInOrder@resource://devtools/client/shared/vendor/react-dom.js:418:5
02:58:36 INFO - GECKO(5900) | executeDispatchesAndRelease@resource://devtools/client/shared/vendor/react-dom.js:516:5
02:58:36 INFO - GECKO(5900) | executeDispatchesAndReleaseTopLevel@resource://devtools/client/shared/vendor/react-dom.js:527:10
02:58:36 INFO - GECKO(5900) | forEachAccumulated@resource://devtools/client/shared/vendor/react-dom.js:495:9
02:58:36 INFO - GECKO(5900) | runEventsInBatch@resource://devtools/client/shared/vendor/react-dom.js:658:5
02:58:36 INFO - GECKO(5900) | runExtractedEventsInBatch@resource://devtools/client/shared/vendor/react-dom.js:667:3
02:58:36 INFO - GECKO(5900) | handleTopLevel@resource://devtools/client/shared/vendor/react-dom.js:4262:5
02:58:36 INFO - GECKO(5900) | batchedUpdates$1@resource://devtools/client/shared/vendor/react-dom.js:13458:12
02:58:36 INFO - GECKO(5900) | batchedUpdates@resource://devtools/client/shared/vendor/react-dom.js:2022:12
02:58:36 INFO - GECKO(5900) | dispatchEvent@resource://devtools/client/shared/vendor/react-dom.js:4341:5
02:58:36 INFO - GECKO(5900) | EventListener.handleEvent*addEventBubbleListener@resource://devtools/client/shared/vendor/react-dom.js:3745:11
02:58:36 INFO - GECKO(5900) | trapBubbledEvent@resource://devtools/client/shared/vendor/react-dom.js:4292:3
02:58:36 INFO - GECKO(5900) | listenTo@resource://devtools/client/shared/vendor/react-dom.js:4488:13
02:58:36 INFO - GECKO(5900) | ensureListeningTo@resource://devtools/client/shared/vendor/react-dom.js:6087:3
02:58:36 INFO - GECKO(5900) | setInitialDOMProperties@resource://devtools/client/shared/vendor/react-dom.js:6140:9
02:58:36 INFO - GECKO(5900) | setInitialProperties$1@resource://devtools/client/shared/vendor/react-dom.js:6272:3
02:58:36 INFO - GECKO(5900) | finalizeInitialChildren@resource://devtools/client/shared/vendor/react-dom.js:6771:3
02:58:36 INFO - GECKO(5900) | completeWork@resource://devtools/client/shared/vendor/react-dom.js:11178:17
02:58:36 INFO - GECKO(5900) | completeUnitOfWork@resource://devtools/client/shared/vendor/react-dom.js:12591:18
02:58:37 INFO - GECKO(5900) | performUnitOfWork@resource://devtools/client/shared/vendor/react-dom.js:12718:12
02:58:37 INFO - GECKO(5900) | workLoop@resource://devtools/client/shared/vendor/react-dom.js:12730:24
02:58:37 INFO - GECKO(5900) | renderRoot@resource://devtools/client/shared/vendor/react-dom.js:12770:7
02:58:37 INFO - GECKO(5900) | performWorkOnRoot@resource://devtools/client/shared/vendor/react-dom.js:13359:22
02:58:37 INFO - GECKO(5900) | performWork@resource://devtools/client/shared/vendor/react-dom.js:13281:7
02:58:37 INFO - GECKO(5900) | performSyncWork@resource://devtools/client/shared/vendor/react-dom.js:13253:3
02:58:37 INFO - GECKO(5900) | requestWork@resource://devtools/client/shared/vendor/react-dom.js:13153:5
02:58:37 INFO - GECKO(5900) | scheduleWork$1@resource://devtools/client/shared/vendor/react-dom.js:13022:11
02:58:37 INFO - GECKO(5900) | enqueueSetState@resource://devtools/client/shared/vendor/react-dom.js:8845:5
02:58:37 INFO - GECKO(5900) | Component.prototype.setState@resource://devtools/client/shared/vendor/react.js:406:16
02:58:37 INFO - GECKO(5900) | onStateChange@resource://devtools/client/shared/vendor/react-redux.js:1412:16
02:58:37 INFO - GECKO(5900) | notify@resource://devtools/client/shared/vendor/react-redux.js:1159:21
02:58:37 INFO - GECKO(5900) | notifyNestedSubs@resource://devtools/client/shared/vendor/react-redux.js:1198:20
02:58:37 INFO - GECKO(5900) | onStateChange@resource://devtools/client/shared/vendor/react-redux.js:1409:16
02:58:37 INFO - GECKO(5900) | dispatch@resource://devtools/client/shared/vendor/redux.js:416:7
02:58:37 INFO - GECKO(5900) | eventTelemetryMiddleware/</<@resource://devtools/client/webconsole/middleware/event-telemetry.js:20:17
02:58:37 INFO - GECKO(5900) | historyPersistenceMiddleware/</<@resource://devtools/client/webconsole/middleware/history-persistence.js:33:17
02:58:37 INFO - GECKO(5900) | thunk/</<@resource://devtools/client/webconsole/middleware/thunk.js:14:9
02:58:37 INFO - GECKO(5900) | setTimeoutIfNeeded/this.throttledDispatchPromise</<@resource://devtools/client/webconsole/webconsole-wrapper.js:585:15
02:58:37 INFO - GECKO(5900) | setTimeout handler*setTimeoutIfNeeded/this.throttledDispatchPromise<@resource://devtools/client/webconsole/webconsole-wrapper.js:575:7
02:58:37 INFO - GECKO(5900) | setTimeoutIfNeeded@resource://devtools/client/webconsole/webconsole-wrapper.js:574:37
02:58:37 INFO - GECKO(5900) | batchedMessageAdd@resource://devtools/client/webconsole/webconsole-wrapper.js:543:10
02:58:37 INFO - GECKO(5900) | dispatchMessageAdd@resource://devtools/client/webconsole/webconsole-wrapper.js:395:10
02:58:37 INFO - GECKO(5900) | dispatchMessageAdd@resource://devtools/client/webconsole/webconsole-connection-proxy.js:208:31
02:58:37 INFO - GECKO(5900) | execute@resource://devtools/client/webconsole/components/JSTerm.js:615:29
02:58:37 INFO - GECKO(5900) | performTests@chrome://mochitests/content/browser/devtools/client/webconsole/test/mochitest/browser_jsterm_helper_dollar_dollar.js:32:10
02:58:37 INFO - GECKO(5900) | async*@chrome://mochitests/content/browser/devtools/client/webconsole/test/mochitest/browser_jsterm_helper_dollar_dollar.js:24:9
02:58:37 INFO - GECKO(5900) | Async*Tester_execTest/<@chrome://mochikit/content/browser-test.js:1106:34
02:58:37 INFO - GECKO(5900) | Tester_execTest@chrome://mochikit/content/browser-test.js:1134:12
02:58:37 INFO - GECKO(5900) | nextTest/<@chrome://mochikit/content/browser-test.js:995:14
02:58:37 INFO - GECKO(5900) | SimpleTest.waitForFocus/waitForFocusInner/focusedOrLoaded/<@chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:803:59
02:58:37 INFO - GECKO(5900) | console.warn: "Error while detaching the thread front: 'detach' request packet to 'server1.conn108.child1/context22' can't be sent as the connection is closed."
02:58:38 INFO - GECKO(5900) | console.warn: "Error while detaching the thread front: 'detach' request packet to 'server1.conn107.child1/context22' can't be sent as the connection is closed."

This test is intermittent on windows10-aarch64; as part of https://phabricator.services.mozilla.com/D23369 it will be skipped.

The failure indicates a pending request to the highlighter
actor. This patch moves the mouse at the top left corner of
the console to avoid hovering any dom elements that might
trigger the highlighter.

https://hg.mozilla.org/mozilla-central/rev/802d46319642