1964569 - Intermittent /html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-parse-error-inline-classic.html | single tracking bug

Status: NEW

(Core :: DOM: Core & HTML, defect, P5)

Description

[Treeherder Bug Filer]

Filed by: csabou [at] mozilla.com
Parsed log: https://treeherder.mozilla.org/logviewer?job_id=506730437&repo=mozilla-central
Full log: https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/PnTFCV1PQvCY_N3ppW6QGg/runs/1/artifacts/public/logs/live_backing.log

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[task 2025-05-06T00:24:34.510Z] 00:24:34     INFO - TEST-OK | /html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-parse-error-external-module.html | took 12698ms
[task 2025-05-06T00:24:34.511Z] 00:24:34     INFO - TEST-START | /html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-parse-error-inline-classic.html
[task 2025-05-06T00:24:34.514Z] 00:24:34     INFO - Closing window a49e90db-c1b8-4a83-ad65-6d60ce0f1d2d
[task 2025-05-06T00:24:35.198Z] 00:24:35     INFO - PID 54380 | JavaScript error: http://web-platform.test:8000/html/semantics/scripting-1/the-script-element/moving-between-documents/resources/moving-between-documents-helper.js, line 144: TypeError: Node.appendChild: Argument 1 is not an object.
[task 2025-05-06T00:24:35.917Z] 00:24:35     INFO - PID 54380 | JavaScript error: http://web-platform.test:8000/html/semantics/scripting-1/the-script-element/moving-between-documents/resources/moving-between-documents-iframe.py?result=parse-error&inlineOrExternal=inline&type=classic&hasBlockingStylesheet=false&cache=0.2967097156596974, line 20: SyntaxError: invalid assignment left-hand side
[task 2025-05-06T00:24:36.270Z] 00:24:36     INFO - PID 54380 | [CodeCoverage] Setting handlers for process 78004.
[task 2025-05-06T00:24:36.344Z] 00:24:36     INFO - PID 54380 | [CodeCoverage] Setting handlers for process 78005.
[task 2025-05-06T00:26:40.020Z] 00:26:40     INFO - 
[task 2025-05-06T00:26:40.020Z] 00:26:40     INFO - TEST-PASS | /html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-parse-error-inline-classic.html | Sanity check around top-level Window 
[task 2025-05-06T00:26:40.020Z] 00:26:40     INFO - TEST-UNEXPECTED-NOTRUN | /html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-parse-error-inline-classic.html | Eval: Move parse-error inline classic script to createHTMLDocument before-prepare - expected PASS
[task 2025-05-06T00:26:40.021Z] 00:26:40     INFO - 
[task 2025-05-06T00:26:40.021Z] 00:26:40     INFO - TEST-UNEXPECTED-NOTRUN | /html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-parse-error-inline-classic.html | <script> load: Move parse-error inline classic script to createHTMLDocument before-prepare - expected PASS
[task 2025-05-06T00:26:40.021Z] 00:26:40     INFO - 
[task 2025-05-06T00:26:40.022Z] 00:26:40     INFO - TEST-UNEXPECTED-NOTRUN | /html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-parse-error-inline-classic.html | <script> error: Move parse-error inline classic script to createHTMLDocument before-prepare - expected PASS
[task 2025-05-06T00:26:40.022Z] 00:26:40     INFO - 
[task 2025-05-06T00:26:40.022Z] 00:26:40     INFO - TEST-UNEXPECTED-FAIL | /html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-parse-error-inline-classic.html | window error: Move parse-error inline classic script to createHTMLDocument before-prepare - assert_unreached: Window error event shouldn't fired on source window Reached unreachable code
[task 2025-05-06T00:26:40.023Z] 00:26:40     INFO - TEST-UNEXPECTED-ERROR | /html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-parse-error-inline-classic.html | Unhandled rejection: Node.appendChild: Argument 1 is not an object.
[task 2025-05-06T00:26:40.023Z] 00:26:40     INFO - runTest@http://web-platform.test:8000/html/semantics/scripting-1/the-script-element/moving-between-documents/resources/moving-between-documents-helper.js:144:23
[task 2025-05-06T00:26:40.023Z] 00:26:40     INFO - TEST-INFO took 125512ms
[task 2025-05-06T00:26:40.025Z] 00:26:40     INFO - PID 54380 | 1746491200025	Marionette	INFO	Stopped listening on port 44477
[task 2025-05-06T00:26:40.300Z] 00:26:40     INFO - Browser exited with return code -15
[task 2025-05-06T00:26:40.302Z] 00:26:40     INFO - Closing logging queue
[task 2025-05-06T00:26:40.302Z] 00:26:40     INFO - queue closed
[task 2025-05-06T00:26:40.348Z] 00:26:40     INFO - Application command: /builds/worker/workspace/build/application/firefox/firefox --marionette --remote-allow-system-access about:blank -profile /tmp/tmppsup49ug
[task 2025-05-06T00:26:40.360Z] 00:26:40     INFO - PID 54827 | [CodeCoverage] Setting handlers for process 54827.
[task 2025-05-06T00:26:40.361Z] 00:26:40     INFO - PID 54827 | ATTENTION: default value of option mesa_glthread overridden by environment.
[task 2025-05-06T00:26:40.362Z] 00:26:40     INFO - PID 54827 | 1746490079428	Marionette	INFO	Marionette enabled
[task 2025-05-06T00:26:40.363Z] 00:26:40     INFO - PID 54827 | ATTENTION: default value of option mesa_glthread overridden by environment.
[task 2025-05-06T00:26:40.363Z] 00:26:40     INFO - PID 54827 | 1746490079757	Marionette	INFO	Listening on port 51001
[task 2025-05-06T00:26:40.364Z] 00:26:40     INFO - PID 54827 | [CodeCoverage] Setting handlers for process 54970.
[task 2025-05-06T00:26:40.367Z] 00:26:40     INFO - PID 54827 | [CodeCoverage] Setting handlers for process 55003.
[task 2025-05-06T00:26:40.367Z] 00:26:40     INFO - PID 54827 | [GFX1-]: Calling WaitFlushedEvent::Run: is delayed: 4700
[task 2025-05-06T00:26:40.367Z] 00:26:40     INFO - PID 54827 | [CodeCoverage] Setting handlers for process 55276.
[task 2025-05-06T00:26:40.368Z] 00:26:40     INFO - PID 54827 | [CodeCoverage] Setting handlers for process 55307.
[task 2025-05-06T00:26:40.368Z] 00:26:40     INFO - PID 54827 | [CodeCoverage] Setting handlers for process 55308.
[task 2025-05-06T00:26:40.368Z] 00:26:40     INFO - Starting runner
[task 2025-05-06T00:26:41.239Z] 00:26:41     INFO - TEST-START | /html/semantics/scripting-1/the-script-element/moving-between-documents/befo