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 chrome.
Details
View task in Taskcluster | View logs in Taskcluster | View task group in Taskcluster
Task Status
Started: 2026-04-17T18:34:24.557Z
Resolved: 2026-04-17T18:37:18.920Z
Task Execution Time: 2 minutes, 54 seconds, 363 milliseconds
Task Status: completed
Reason Resolved: completed
TaskId: NbscKQodR5mHIjho2y5ZZA
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=dev --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 --enable-swiftshader --install-browser --install-webdriver chrome
[taskcluster 2026-04-17 18:34:24.632Z] Task ID: NbscKQodR5mHIjho2y5ZZA
[taskcluster 2026-04-17 18:34:24.632Z] Worker ID: 3726000122242253402
[taskcluster 2026-04-17 18:34:24.632Z] Worker Group: us-east4-c
[taskcluster 2026-04-17 18:34:24.632Z] Worker Node Type: projects/757942385826/machineTypes/n2-standard-4
[taskcluster 2026-04-17 18:34:24.632Z] Worker Pool: proj-wpt/ci
[taskcluster 2026-04-17 18:34:24.632Z] Worker Version: 46.1.0
[taskcluster 2026-04-17 18:34:24.632Z] Public IP: 34.48.29.134
[taskcluster 2026-04-17 18:34:24.632Z] Hostname: proj-wpt-ci-lprkrwibr6s-oiqbgl-weg
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...(516 lines hidden)...
Setting default value
Failed to read: session.screen0.iconbar.usePixmap
Setting default value
Warning: could not load product 'firefox' for argument registration: No module named 'mozleak'
Warning: could not load product 'firefox_android' for argument registration: No module named 'mozrunner'
0:00.00 INFO Set tests_root to /home/test/web-platform-tests
0:00.00 INFO Set metadata_root to /home/test/web-platform-tests
0:00.00 INFO Set manifest_update to True
0:00.00 INFO Set manifest_download to True
0:14.56 INFO Identified 2 affected tests
0:14.56 INFO Installing browser
0:14.59 INFO Downloading Chrome for Testing from https://storage.googleapis.com/chrome-for-testing-public/149.0.7795.2/linux64/chrome-linux64.zip
0:17.95 INFO Downloading Mojo bindings from https://storage.googleapis.com/chrome-for-testing-public/149.0.7795.2/mojojs.zip
0:18.00 INFO MojoJS enabled automatically (mojojs_path: /home/test/web-platform-tests/_venv3/mojojs/gen)
0:18.02 INFO Download info for matching ChromeDriver version found.
0:18.02 INFO Downloading ChromeDriver from https://storage.googleapis.com/chrome-for-testing-public/149.0.7795.2/linux64/chromedriver-linux64.zip
0:18.25 INFO Automatically turning on experimental features
0:28.85 INFO Installed font: Ahem.ttf
0:30.00 wptserve INFO Starting http server on http://127.0.0.1:8000
0:30.02 wptserve INFO Starting http server on http://127.0.0.1:8001
0:30.04 wptserve INFO Starting http server on http://127.0.0.1:8002
0:30.06 wptserve INFO Create socket on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8888))
0:30.07 wptserve INFO Bind on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8888))
0:30.07 wptserve INFO Listen on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8888))
0:30.13 wptserve INFO Starting https server on https://127.0.0.1:8445
0:30.15 wptserve INFO Starting https server on https://127.0.0.1:8446
0:30.18 wptserve INFO Starting https server on https://127.0.0.1:8443
0:30.18 wptserve INFO Starting https server on https://127.0.0.1:8444
0:30.18 wptserve INFO Starting http server on http://127.0.0.1:8003
0:30.19 wptserve INFO Starting http2 server on https://127.0.0.1:9000
0:30.20 wptserve INFO Create socket on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8889))
0:30.21 wptserve INFO Bind on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8889))
0:30.21 wptserve INFO Listen on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8889))
0:30.26 wptserve INFO Starting WebTransport over HTTP/3 server on 127.0.0.1:11000
0:31.23 SUITE_START: web-platform-test - running 2 tests
0:38.06 INFO Using 1 child processes
0:38.06 INFO Starting WebDriver: /home/test/web-platform-tests/_venv3/bin/chrome/chromedriver --port=42339 --ignore-explicit-port --url-base=/ --enable-chrome-logs --disable-build-check
0:38.08 INFO Got WebDriver port 40719
0:38.18 pid:2204 Full command: /home/test/web-platform-tests/_venv3/bin/chrome/chromedriver --port=42339 --ignore-explicit-port --url-base=/ --enable-chrome-logs --disable-build-check
pid:2204 Starting ChromeDriver 149.0.7795.2 (02dc409e890c90057fd651124098ec52a6b544f1-refs/branch-heads/7795@{#5}) on port 0
0:38.18 pid:2204 Only local connections are allowed.
0:38.18 pid:2204 Please see https://chromedriver.chromium.org/security-considerations for suggestions on keeping ChromeDriver safe.
0:38.18 pid:2204 ChromeDriver was started successfully on port 40719.
0:38.18 INFO Webdriver started successfully.
0:38.18 INFO Starting runner
0:39.61 pid:2204 [2256:2256:0417/183708.184382:WARNING:sandbox/policy/linux/sandbox_linux.cc:404] InitializeSandbox() called with multiple threads in process gpu-process.
0:39.61 pid:2204 [2256:2256:0417/183708.219289:WARNING:ui/gfx/linux/gbm_support_x11.cc:48] dri3 extension not supported.
0:39.61 pid:2204 [1776451028.221][WARNING]: You are using an unsupported command-line switch: --disable-build-check. Please don't report bugs that cannot be reproduced with this switch removed.
Failed to read: session.screen0.titlebar.left
Setting default value
Failed to read: session.screen0.titlebar.right
Setting default value
0:39.77 pid:2204 [2221:2221:0417/183708.380970:ERROR:dbus/object_proxy.cc:572] Failed to call method: org.freedesktop.DBus.Properties.GetAll: object_path= /org/freedesktop/UPower/devices/DisplayDevice: org.freedesktop.DBus.Error.ServiceUnknown: The name org.freedesktop.UPower was not provided by any .service files
0:39.77 pid:2204 [2221:2221:0417/183708.380993:WARNING:dbus/property.cc:174] GetAll request failed for: org.freedesktop.UPower.Device
0:39.81 pid:2204 [2221:2221:0417/183708.421919:WARNING:ui/base/idle/idle_linux.cc:111] None of the known D-Bus ScreenSaver services could be used.
0:39.97 TEST_START: /css/selectors/media/sound-state.html
0:40.58 TEST_END: Test OK. Subtests passed 0/3. Unexpected 3
FAIL Test :pseudo-class syntax is supported without throwing a SyntaxError - assert_unreached: :muted is not supported Reached unreachable code
at Test.<anonymous> (http://web-platform.test:8000/css/selectors/media/sound-state.html:21:11)
at Test.step (http://web-platform.test:8000/resources/testharness.js:2869:25)
at test (http://web-platform.test:8000/resources/testharness.js:633:30)
at http://web-platform.test:8000/css/selectors/media/sound-state.html:16:5
FAIL Test :muted pseudo-class - assert_implements: :muted is not supported undefined
at Test.<anonymous> (http://web-platform.test:8000/css/selectors/media/sound-state.html:27:7)
at Test.step (http://web-platform.test:8000/resources/testharness.js:2869:25)
at http://web-platform.test:8000/resources/testharness.js:738:36
at new Promise (<anonymous>)
at http://web-platform.test:8000/resources/testharness.js:737:20
FAIL Test :muted matches .muted for content attribute default - assert_implements: :muted is not supported undefined
at Test.<anonymous> (http://web-platform.test:8000/css/selectors/media/sound-state.html:48:7)
at Test.step (http://web-platform.test:8000/resources/testharness.js:2869:25)
at test (http://web-platform.test:8000/resources/testharness.js:633:30)
at http://web-platform.test:8000/css/selectors/media/sound-state.html:47:5
0:40.58 TEST_START: /html/semantics/embedded-content/media-elements/user-interface/muted.html
0:40.90 TEST_END: Test OK. Subtests passed 27/33. Unexpected 6
FAIL getting audio.muted with muted="" (script-created) - assert_true: expected true got false
at Test.<anonymous> (http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:115:5)
at Test.step (http://web-platform.test:8000/resources/testharness.js:2869:25)
at test (http://web-platform.test:8000/resources/testharness.js:633:30)
at http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:112:3
at Array.forEach (<anonymous>)
FAIL setting audio.muted with muted="" (script-created) - assert_equals: expected true but got false
at test_setting (http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:11:3)
at Test.<anonymous> (http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:121:5)
at Test.step (http://web-platform.test:8000/resources/testharness.js:2869:25)
at test (http://web-platform.test:8000/resources/testharness.js:633:30)
at http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:118:3
FAIL adding/removing muted attribute dynamically affects audio.muted - assert_true: expected true got false
at Test.<anonymous> (http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:170:5)
at Test.step (http://web-platform.test:8000/resources/testharness.js:2869:25)
at test (http://web-platform.test:8000/resources/testharness.js:633:30)
at http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:166:3
at Array.forEach (<anonymous>)
FAIL getting video.muted with muted="" (script-created) - assert_true: expected true got false
at Test.<anonymous> (http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:115:5)
at Test.step (http://web-platform.test:8000/resources/testharness.js:2869:25)
at test (http://web-platform.test:8000/resources/testharness.js:633:30)
at http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:112:3
at Array.forEach (<anonymous>)
FAIL setting video.muted with muted="" (script-created) - assert_equals: expected true but got false
at test_setting (http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:11:3)
at Test.<anonymous> (http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:121:5)
at Test.step (http://web-platform.test:8000/resources/testharness.js:2869:25)
at test (http://web-platform.test:8000/resources/testharness.js:633:30)
at http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:118:3
FAIL adding/removing muted attribute dynamically affects video.muted - assert_true: expected true got false
at Test.<anonymous> (http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:170:5)
at Test.step (http://web-platform.test:8000/resources/testharness.js:2869:25)
at test (http://web-platform.test:8000/resources/testharness.js:633:30)
at http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:166:3
at Array.forEach (<anonymous>)
0:40.90 INFO No more tests
0:40.95 INFO Closing logging queue
0:40.95 INFO queue closed
0:41.07 SUITE_END
web-platform-test
~~~~~~~~~~~~~~~~~
Ran 38 checks (36 subtests, 2 tests)
Expected results: 29
Unexpected results: 9
subtest: 9 (9 fail)
Error Summary
-------------
/css/selectors/media/sound-state.html
FAIL Test :pseudo-class syntax is supported without throwing a SyntaxError - assert_unreached: :muted is not supported Reached unreachable code
at Test.<anonymous> (http://web-platform.test:8000/css/selectors/media/sound-state.html:21:11)
at Test.step (http://web-platform.test:8000/resources/testharness.js:2869:25)
at test (http://web-platform.test:8000/resources/testharness.js:633:30)
at http://web-platform.test:8000/css/selectors/media/sound-state.html:16:5
FAIL Test :muted pseudo-class - assert_implements: :muted is not supported undefined
at Test.<anonymous> (http://web-platform.test:8000/css/selectors/media/sound-state.html:27:7)
at Test.step (http://web-platform.test:8000/resources/testharness.js:2869:25)
at http://web-platform.test:8000/resources/testharness.js:738:36
at new Promise (<anonymous>)
at http://web-platform.test:8000/resources/testharness.js:737:20
FAIL Test :muted matches .muted for content attribute default - assert_implements: :muted is not supported undefined
at Test.<anonymous> (http://web-platform.test:8000/css/selectors/media/sound-state.html:48:7)
at Test.step (http://web-platform.test:8000/resources/testharness.js:2869:25)
at test (http://web-platform.test:8000/resources/testharness.js:633:30)
at http://web-platform.test:8000/css/selectors/media/sound-state.html:47:5
/html/semantics/embedded-content/media-elements/user-interface/muted.html
FAIL getting audio.muted with muted="" (script-created) - assert_true: expected true got false
at Test.<anonymous> (http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:115:5)
at Test.step (http://web-platform.test:8000/resources/testharness.js:2869:25)
at test (http://web-platform.test:8000/resources/testharness.js:633:30)
at http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:112:3
at Array.forEach (<anonymous>)
FAIL setting audio.muted with muted="" (script-created) - assert_equals: expected true but got false
at test_setting (http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:11:3)
at Test.<anonymous> (http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:121:5)
at Test.step (http://web-platform.test:8000/resources/testharness.js:2869:25)
at test (http://web-platform.test:8000/resources/testharness.js:633:30)
at http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:118:3
FAIL adding/removing muted attribute dynamically affects audio.muted - assert_true: expected true got false
at Test.<anonymous> (http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:170:5)
at Test.step (http://web-platform.test:8000/resources/testharness.js:2869:25)
at test (http://web-platform.test:8000/resources/testharness.js:633:30)
at http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:166:3
at Array.forEach (<anonymous>)
FAIL getting video.muted with muted="" (script-created) - assert_true: expected true got false
at Test.<anonymous> (http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:115:5)
at Test.step (http://web-platform.test:8000/resources/testharness.js:2869:25)
at test (http://web-platform.test:8000/resources/testharness.js:633:30)
at http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:112:3
at Array.forEach (<anonymous>)
FAIL setting video.muted with muted="" (script-created) - assert_equals: expected true but got false
at test_setting (http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:11:3)
at Test.<anonymous> (http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:121:5)
at Test.step (http://web-platform.test:8000/resources/testharness.js:2869:25)
at test (http://web-platform.test:8000/resources/testharness.js:633:30)
at http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:118:3
FAIL adding/removing muted attribute dynamically affects video.muted - assert_true: expected true got false
at Test.<anonymous> (http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:170:5)
at Test.step (http://web-platform.test:8000/resources/testharness.js:2869:25)
at test (http://web-platform.test:8000/resources/testharness.js:633:30)
at http://web-platform.test:8000/html/semantics/embedded-content/media-elements/user-interface/muted.html:166:3
at Array.forEach (<anonymous>)
0:41.07 INFO Got 2 unexpected results, with 0 unexpected passes
0:41.07 wptserve INFO Stopped http server on 127.0.0.1:8000
0:41.07 wptserve INFO Stopped http server on 127.0.0.1:8001
0:41.08 wptserve INFO Stopped http server on 127.0.0.1:8002
0:41.09 wptserve INFO Stopped http server on 127.0.0.1:8443
0:41.09 wptserve INFO Stopped http server on 127.0.0.1:8446
0:41.09 wptserve INFO Stopped http server on 127.0.0.1:8003
0:41.09 wptserve INFO Stopped http server on 127.0.0.1:8444
0:41.09 wptserve INFO Stopped http server on 127.0.0.1:8445
0:41.09 wptserve INFO Stopped http server on 127.0.0.1:9000
0:41.09 wptserve INFO Stopped WebTransport over HTTP/3 server on 127.0.0.1:11000
0:41.24 wptserve INFO Close on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8888))
0:41.25 wptserve INFO Close on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8889))
0:41.34 INFO Removed font: Ahem.ttf
0:41.38 INFO Closing logging queue
0:41.38 INFO queue closed
0:41.38 INFO Tolerating 2 unexpected results
[taskcluster 2026-04-17 18:37:17.052Z] === Task Finished ===
[taskcluster 2026-04-17 18:37:18.128Z] Successful task run with exit code: 0 completed in 173.498 seconds