HTML: make muted attribute no longer rely on non-existing element creation-time #59322
Community-TC (pull_request)
Collect results for all tests affected by a pull request in firefox.
Details
View task in Taskcluster | View logs in Taskcluster | View task group in Taskcluster
Task Status
Started: 2026-04-17T20:13:40.641Z
Resolved: 2026-04-17T20:16:10.416Z
Task Execution Time: 2 minutes, 29 seconds, 775 milliseconds
Task Status: completed
Reason Resolved: completed
TaskId: QcbeSnXtTkC_xLKCX4-bRg
RunId: 0
Artifacts
- public/logs/live_backing.log
- public/logs/live.log
- public/results/checkrun.md
- public/results/wpt_report.json.gz
- public/results/wpt_screenshot.txt.gz
WPT Command: python3 ./wpt run --channel=nightly --no-fail-on-unexpected --log-wptreport=../artifacts/wpt_report.json --log-wptscreenshot=../artifacts/wpt_screenshot.txt --affected base_head --log-mach-level=info --log-mach=- -y --no-pause --no-restart-on-unexpected --install-fonts --verify-log-full --no-headless --binary=/home/test/build/firefox/firefox firefox
[taskcluster 2026-04-17 20:13:40.723Z] Task ID: QcbeSnXtTkC_xLKCX4-bRg
[taskcluster 2026-04-17 20:13:40.723Z] Worker ID: 2101228244866925344
[taskcluster 2026-04-17 20:13:40.723Z] Worker Group: us-central1-f
[taskcluster 2026-04-17 20:13:40.723Z] Worker Node Type: projects/757942385826/machineTypes/n2-standard-4
[taskcluster 2026-04-17 20:13:40.723Z] Worker Pool: proj-wpt/ci
[taskcluster 2026-04-17 20:13:40.723Z] Worker Version: 46.1.0
[taskcluster 2026-04-17 20:13:40.723Z] Public IP: 136.114.26.107
[taskcluster 2026-04-17 20:13:40.723Z] Hostname: proj-wpt-ci-a8jjf5trs5euqyqahymjka
[taskcluster 2026-04-17 20:13:41.744Z] === Task Starting ===
+ '[' '' ']'
+ '[' -d /etc/profile.d ']'
+ for i in /etc/profile.d/*.sh
+ '[' -r /etc/profile.d/01-locale-fix.sh ']'
+ . /etc/profile.d/01-locale-fix.sh
+++ /usr/bin/locale-check C.UTF-8
++ eval
+ for i in /etc/profile.d/*.sh
+ '[' -r /etc/profile.d/apps-bin-path.sh ']'
+ . /etc/profile.d/apps-bin-path.sh
...(363 lines hidden)...
0:00.00 INFO Set manifest_update to True
0:00.00 INFO Set manifest_download to True
0:16.69 INFO Identified 2 affected tests
0:16.69 INFO Using certutil /usr/bin/certutil
0:16.73 INFO Downloading geckodriver
0:16.73 INFO Attempting to install webdriver from nightly
0:17.10 INFO Extracted geckodriver to /home/test/web-platform-tests/_venv3/bin/geckodriver
0:17.11 INFO Installed b'geckodriver 0.36.0 (c618caf8d6e8 2026-04-07 23:58 +0000)'
0:23.33 INFO Getting profile data from git ref a2cd26231c754e73667b009d8bd2e8b601b369b6
0:23.92 INFO Test prefs downloaded to /home/test/web-platform-tests/_venv3/profiles/a2cd26231c754e73667b009d8bd2e8b601b369b6/151.0a1
0:23.92 INFO Downloading OpenH264 plugin
0:30.16 INFO Downloading openh264.json from git ref a2cd26231c754e73667b009d8bd2e8b601b369b6
0:30.34 INFO Downloading OpenH264 plugin from https://ciscobinary.openh264.org/openh264-linux64-652bdb7719f30b52b08e506645a7322ff1b2cc6f.zip
0:30.57 INFO OpenH264 plugin installed to /home/test/web-platform-tests/_venv3/browsers/nightly/gmp-gmpopenh264/2.6.0
0:30.57 INFO Using OpenH264 plugin in /home/test/web-platform-tests/_venv3/browsers/nightly/gmp-gmpopenh264/2.6.0
[1320] Sandbox: CanCreateUserNamespace() clone() failure: EPERM
0:30.63 mozversion INFO application_buildid: 20260417094322
0:30.63 mozversion INFO application_changeset: 22fffa2cfadbdf897bf5df29b9a1a97c509e2e45
0:30.63 mozversion INFO application_display_name: Firefox Nightly
0:30.63 mozversion INFO application_id: {ec8030f7-c20a-464f-9b0e-13a3a9e97384}
0:30.63 mozversion INFO application_name: Firefox
0:30.63 mozversion INFO application_remotingname: firefox-nightly
0:30.63 mozversion INFO application_repository: https://hg.mozilla.org/mozilla-central
0:30.63 mozversion INFO application_vendor: Mozilla
0:30.63 mozversion INFO application_version: 151.0a1
0:30.63 mozversion INFO platform_buildid: 20260417094322
0:30.63 mozversion INFO platform_changeset: 22fffa2cfadbdf897bf5df29b9a1a97c509e2e45
0:30.63 mozversion INFO platform_repository: https://hg.mozilla.org/mozilla-central
0:30.63 mozversion INFO platform_version: 151.0a1
mem avail: 14512 of 15806 MiB (91.81%), swap free: 0 of 0 MiB ( 0.00%)
0:40.42 INFO Installed font: Ahem.ttf
0:41.37 wptserve INFO Starting http server on http://127.0.0.1:8003
0:41.39 wptserve INFO Starting http server on http://127.0.0.1:8001
0:41.47 wptserve INFO Starting http server on http://127.0.0.1:8002
0:41.52 wptserve INFO Starting https server on https://127.0.0.1:8443
0:41.52 wptserve INFO Starting http server on http://127.0.0.1:8000
0:41.54 wptserve INFO Starting https server on https://127.0.0.1:8445
0:41.54 wptserve INFO Starting https server on https://127.0.0.1:8446
0:41.55 wptserve INFO Starting https server on https://127.0.0.1:8444
0:41.55 wptserve INFO Starting http2 server on https://127.0.0.1:9000
0:41.56 wptserve INFO Create socket on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8888))
0:41.56 wptserve INFO Bind on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8888))
0:41.56 wptserve INFO Listen on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8888))
0:41.56 wptserve INFO Create socket on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8889))
0:41.56 wptserve INFO Bind on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8889))
0:41.56 wptserve INFO Listen on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8889))
0:41.63 wptserve INFO Starting WebTransport over HTTP/3 server on 127.0.0.1:11000
0:41.97 SUITE_START: web-platform-test - running 2 tests
0:57.58 INFO Using 1 child processes
0:57.60 INFO Setting up ssl
0:57.62 certutil Full command: /usr/bin/certutil -N -d /tmp/tmp557eb9v6.mozrunner -f /tmp/tmp557eb9v6.mozrunner/.crtdbpw
certutil b''
0:57.65 certutil b''
0:57.65 certutil b'\nCertificate Nickname Trust Attributes\n SSL,S/MIME,JAR/XPI\n\nweb-platform-tests CT,, \n'
0:57.66 INFO Application command: /home/test/build/firefox/firefox --marionette --remote-allow-system-access about:blank -profile /tmp/tmp6bvgogdh
0:57.67 INFO Starting runner
0:57.68 pid:1424 Full command: /home/test/build/firefox/firefox --marionette --remote-allow-system-access about:blank
pid:1424 [1424] Sandbox: CanCreateUserNamespace() clone() failure: EPERM
0:58.29 pid:1424 1776456959015 Marionette INFO Marionette enabled
0:58.40 pid:1424 1776456959127 Marionette INFO Listening on port 48949
Failed to read: session.screen0.titlebar.left
Setting default value
Failed to read: session.screen0.titlebar.right
Setting default value
1:00.97 pid:1424 console.error: services.settings:
1:00.97 pid:1424 Message: EmptyDatabaseError: "main/nimbus-desktop-experiments" has not been synced yet
1:00.97 pid:1424 Stack:
1:00.97 pid:1424 EmptyDatabaseError@resource://services-settings/Database.sys.mjs:19:5
1:00.97 pid:1424 list@resource://services-settings/Database.sys.mjs:96:13
1:01.19 pid:1424 console.warn: BackupService: "There was an error while trying to get the Document's directory" [Exception... "Component returned failure code: 0x80004005 (NS_ERROR_FAILURE) [nsIProperties.get]" nsresult: "0x80004005 (NS_ERROR_FAILURE)" location: "JS frame :: resource:///modules/backup/BackupService.sys.mjs :: get docsDirFolderPath :: line 1229" data: no]
1:01.59 TEST_START: /css/selectors/media/sound-state.html
1:02.18 TEST_END: Test OK. Subtests passed 2/3. Unexpected 1
FAIL Test :muted matches .muted for content attribute default - assert_true: expected true got false
@http://web-platform.test:8000/css/selectors/media/sound-state.html:58:18
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/css/selectors/media/sound-state.html:47:9
1:02.18 TEST_START: /html/semantics/embedded-content/media-elements/user-interface/muted.html
1:02.18 INFO Closing window 74d619f2-da5e-4a61-afad-6e6428b50804
1:02.49 TEST_END: Test OK. Subtests passed 27/33. Unexpected 6
FAIL getting audio.muted with muted="" (script-created) - assert_true: expected true got false
@http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:115:16
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:112:7
@http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:101:20
FAIL setting audio.muted with muted="" (script-created) - assert_equals: expected true but got false
test_setting@http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:11:16
@http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:121:17
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:118:7
@http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:101:20
FAIL adding/removing muted attribute dynamically affects audio.muted - assert_true: expected true got false
@http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:170:16
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:166:7
@http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:101:20
FAIL getting video.muted with muted="" (script-created) - assert_true: expected true got false
@http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:115:16
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:112:7
@http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:101:20
FAIL setting video.muted with muted="" (script-created) - assert_equals: expected true but got false
test_setting@http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:11:16
@http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:121:17
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:118:7
@http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:101:20
FAIL adding/removing muted attribute dynamically affects video.muted - assert_true: expected true got false
@http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:170:16
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:166:7
@http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:101:20
1:02.49 INFO No more tests
1:02.49 pid:1424 1776456963221 Marionette INFO Stopped listening on port 48949
1:03.08 INFO Browser exited with return code 0
1:02.84 INFO Closing logging queue
1:02.84 INFO queue closed
1:03.09 SUITE_END
web-platform-test
~~~~~~~~~~~~~~~~~
Ran 38 checks (36 subtests, 2 tests)
Expected results: 31
Unexpected results: 7
subtest: 7 (7 fail)
Error Summary
-------------
/css/selectors/media/sound-state.html
FAIL Test :muted matches .muted for content attribute default - assert_true: expected true got false
@http://web-platform.test:8000/css/selectors/media/sound-state.html:58:18
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/css/selectors/media/sound-state.html:47:9
/html/semantics/embedded-content/media-elements/user-interface/muted.html
FAIL getting audio.muted with muted="" (script-created) - assert_true: expected true got false
@http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:115:16
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:112:7
@http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:101:20
FAIL setting audio.muted with muted="" (script-created) - assert_equals: expected true but got false
test_setting@http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:11:16
@http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:121:17
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:118:7
@http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:101:20
FAIL adding/removing muted attribute dynamically affects audio.muted - assert_true: expected true got false
@http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:170:16
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:166:7
@http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:101:20
FAIL getting video.muted with muted="" (script-created) - assert_true: expected true got false
@http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:115:16
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:112:7
@http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:101:20
FAIL setting video.muted with muted="" (script-created) - assert_equals: expected true but got false
test_setting@http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:11:16
@http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:121:17
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:118:7
@http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:101:20
FAIL adding/removing muted attribute dynamically affects video.muted - assert_true: expected true got false
@http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:170:16
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:166:7
@http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:101:20
1:03.09 INFO Got 2 unexpected results, with 0 unexpected passes
1:03.09 wptserve INFO Stopped http server on 127.0.0.1:8001
1:03.09 wptserve INFO Stopped http server on 127.0.0.1:8000
1:03.09 wptserve INFO Stopped http server on 127.0.0.1:8002
1:03.11 wptserve INFO Stopped http server on 127.0.0.1:8443
1:03.11 wptserve INFO Stopped http server on 127.0.0.1:8444
1:03.11 wptserve INFO Stopped http server on 127.0.0.1:8003
1:03.11 wptserve INFO Stopped http server on 127.0.0.1:8445
1:03.11 wptserve INFO Stopped http server on 127.0.0.1:8446
1:03.11 wptserve INFO Stopped WebTransport over HTTP/3 server on 127.0.0.1:11000
1:03.11 wptserve INFO Stopped http server on 127.0.0.1:9000
1:03.49 wptserve INFO Close on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8889))
1:03.49 wptserve INFO Close on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8888))
1:03.54 INFO Removed font: Ahem.ttf
1:03.57 INFO Closing logging queue
1:03.57 INFO queue closed
1:03.57 INFO Tolerating 2 unexpected results
[taskcluster 2026-04-17 20:16:07.353Z] === Task Finished ===
[taskcluster 2026-04-17 20:16:08.352Z] Successful task run with exit code: 0 completed in 147.63 seconds