Filed by: chorotan [at] mozilla.com
Parsed log: https://treeherder.mozilla.org/logviewer?job_id=544549210&repo=autoland&task=UOy7gOhsRMuvz50AtrDfVw.0
Full log: https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/UOy7gOhsRMuvz50AtrDfVw/runs/0/artifacts/public/logs/live_backing.log
Reftest URL: https://hg.mozilla.org/mozilla-central/raw-file/default/layout/tools/reftest/reftest-analyzer.xhtml#logurl=https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/UOy7gOhsRMuvz50AtrDfVw/runs/0/artifacts/public/logs/live_backing.log&only_show_unexpected=1

[task 2026-01-20T22:19:23.485+00:00] 22:19:23     INFO - TEST-PASS | devtools/client/netmonitor/src/har/test/browser_harautomation_simple.js | The main process DevToolsServer has no pending connection when the test ends
[task 2026-01-20T22:19:23.485+00:00] 22:19:23     INFO - finish() was called, cleaning up...
[task 2026-01-20T22:19:23.486+00:00] 22:19:23     INFO - Buffered messages logged at 22:19:23
[task 2026-01-20T22:19:23.486+00:00] 22:19:23     INFO - Console message: [JavaScript Error: "TypeError: can't access property "networkCommand", this.commands is null" {file: "resource://devtools/client/netmonitor/src/connector/index.js" line: 95}]
[task 2026-01-20T22:19:23.487+00:00] 22:19:23     INFO - Buffered messages finished
[task 2026-01-20T22:19:23.488+00:00] 22:19:23     INFO - TEST-UNEXPECTED-FAIL | devtools/client/netmonitor/src/har/test/browser_harautomation_simple.js | A promise chain failed to handle a rejection: can't access property "networkCommand", this.commands is null - stack: connect@resource://devtools/client/netmonitor/src/connector/index.js:95:5
[task 2026-01-20T22:19:23.488+00:00] 22:19:23     INFO - connect@resource://devtools/client/netmonitor/src/api.js:74:26
[task 2026-01-20T22:19:23.488+00:00] 22:19:23     INFO - getNetMonitorAPI@resource://devtools/client/framework/toolbox.js:4793:31
[task 2026-01-20T22:19:23.488+00:00] 22:19:23     INFO - executeExport@resource://devtools/client/netmonitor/src/har/har-automation.js:177:43
[task 2026-01-20T22:19:23.488+00:00] 22:19:23     INFO - autoExport@resource://devtools/client/netmonitor/src/har/har-automation.js:142:17
[task 2026-01-20T22:19:23.488+00:00] 22:19:23     INFO - pageLoadDone/<@resource://devtools/client/netmonitor/src/har/har-automation.js:122:21
[task 2026-01-20T22:19:23.488+00:00] 22:19:23     INFO - Rejection date: Tue Jan 20 2026 22:19:23 GMT+0000 (Coordinated Universal Time) - false == true
[task 2026-01-20T22:19:23.488+00:00] 22:19:23     INFO - resource://testing-common/PromiseTestUtils.sys.mjs:assertNoUncaughtRejections:266
[task 2026-01-20T22:19:23.488+00:00] 22:19:23     INFO - chrome://mochikit/content/browser-test.js:nextTest:1129
[task 2026-01-20T22:19:23.488+00:00] 22:19:23     INFO - chrome://mochikit/content/browser-test.js:testScope/test_finish/<:2022
[task 2026-01-20T22:19:23.488+00:00] 22:19:23     INFO - chrome://mochikit/content/browser-test.js:run:1945
[task 2026-01-20T22:19:23.489+00:00] 22:19:23     INFO - checking for open sidebars
[task 2026-01-20T22:19:23.489+00:00] 22:19:23     INFO - checking window state
[task 2026-01-20T22:19:23.490+00:00] 22:19:23     INFO - Not taking screenshot here: see the one that was previously logged
[task 2026-01-20T22:19:23.490+00:00] 22:19:23     INFO - TEST-UNEXPECTED-FAIL | devtools/client/netmonitor/src/har/test/browser_harautomation_simple.js | finished in 1102ms
[task 2026-01-20T22:19:23.490+00:00] 22:19:23     INFO - TEST-INFO took 1107ms
[task 2026-01-20T22:19:23.491+00:00] 22:19:23     INFO - GECKO(74156) | Completed ShutdownLeaks collections in process 74156

:ochameau, since you are the author of the regressor, bug 2003810, could you take a look?

For more information, please visit BugBot documentation.

Set release status flags based on info from the regressing bug 2003810