[taskcluster 2026-01-09 23:37:00.748Z] Task ID: alEDyZUWSlaqKe7fPMRGEA
[taskcluster 2026-01-09 23:37:00.748Z] Worker ID: 4839858834875708548
[taskcluster 2026-01-09 23:37:00.748Z] Worker Group: us-east1-c
[taskcluster 2026-01-09 23:37:00.748Z] Worker Node Type: projects/757942385826/machineTypes/n2-standard-4
[taskcluster 2026-01-09 23:37:00.748Z] Worker Pool: proj-wpt/ci
[taskcluster 2026-01-09 23:37:00.748Z] Worker Version: 46.1.0
[taskcluster 2026-01-09 23:37:00.748Z] Public IP: 34.139.213.200
[taskcluster 2026-01-09 23:37:00.748Z] Hostname: proj-wpt-ci-yjqu2t7crui-givoobyoua

[taskcluster 2026-01-09 23:37:01.905Z] === 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

...(367 lines hidden)...

Setting default value
Failed to read: session.tabsAttachArea
Setting default value
Failed to read: session.cacheLife
Setting default value
Failed to read: session.cacheMax
Setting default value
Failed to read: session.autoRaiseDelay
Setting default value
Failed to read: session.screen0.opaqueMove
Setting default value
Failed to read: session.screen0.fullMaximization
Setting default value
Failed to read: session.screen0.maxIgnoreIncrement
Setting default value
Failed to read: session.screen0.maxDisableMove
Setting default value
Failed to read: session.screen0.maxDisableResize
Setting default value
Failed to read: session.screen0.workspacewarping
Setting default value
Failed to read: session.screen0.showwindowposition
Setting default value
Failed to read: session.screen0.autoRaise
Setting default value
Failed to read: session.screen0.clickRaises
Setting default value
Failed to read: session.screen0.defaultDeco
Setting default value
Failed to read: session.screen0.tab.placement
Setting default value
Failed to read: session.screen0.windowMenu
Setting default value
Failed to read: session.screen0.noFocusWhileTypingDelay
Setting default value
Failed to read: session.screen0.workspaces
Setting default value
Failed to read: session.screen0.edgeSnapThreshold
Setting default value
Failed to read: session.screen0.window.focus.alpha
Setting default value
Failed to read: session.screen0.window.unfocus.alpha
Setting default value
Failed to read: session.screen0.menu.alpha
Setting default value
Failed to read: session.screen0.menuDelay
Setting default value
Failed to read: session.screen0.tab.width
Setting default value
Failed to read: session.screen0.tooltipDelay
Setting default value
Failed to read: session.screen0.allowRemoteActions
Setting default value
Failed to read: session.screen0.clientMenu.usePixmap
Setting default value
Failed to read: session.screen0.tabs.usePixmap
Setting default value
Failed to read: session.screen0.tabs.maxOver
Setting default value
Failed to read: session.screen0.tabs.intitlebar
Setting default value
Failed to read: session.screen0.focusModel
Setting default value
Failed to read: session.screen0.tabFocusModel
Setting default value
Failed to read: session.screen0.focusNewWindows
Setting default value
Failed to read: session.screen0.focusSameHead
Setting default value
Failed to read: session.screen0.rowPlacementDirection
Setting default value
Failed to read: session.screen0.colPlacementDirection
Setting default value
Failed to read: session.screen0.windowPlacement
Setting default value
Failed to read: session.screen0.slit.acceptKdeDockapps
Setting default value
Failed to read: session.screen0.slit.autoHide
Setting default value
Failed to read: session.screen0.slit.maxOver
Setting default value
Failed to read: session.screen0.slit.placement
Setting default value
Failed to read: session.screen0.slit.alpha
Setting default value
Failed to read: session.screen0.slit.onhead
Setting default value
Failed to read: session.screen0.slit.layer
Setting default value
Failed to read: session.screen0.toolbar.autoHide
Setting default value
Failed to read: session.screen0.toolbar.maxOver
Setting default value
Failed to read: session.screen0.toolbar.visible
Setting default value
Failed to read: session.screen0.toolbar.alpha
Setting default value
Failed to read: session.screen0.toolbar.layer
Setting default value
Failed to read: session.screen0.toolbar.onhead
Setting default value
Failed to read: session.screen0.toolbar.placement
Setting default value
Failed to read: session.screen0.toolbar.height
Setting default value
Failed to read: session.screen0.iconbar.mode
Setting default value
Failed to read: session.screen0.iconbar.alignment
Setting default value
Failed to read: session.screen0.iconbar.iconWidth
Setting default value
Failed to read: session.screen0.iconbar.iconTextPadding
Setting default value
Failed to read: session.screen0.iconbar.usePixmap
Setting default value
 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
 0:10.80 INFO Identified 1 affected tests
 0:10.80 INFO Installing browser
 0:10.86 INFO Downloading Chrome for Testing from https://storage.googleapis.com/chrome-for-testing-public/145.0.7572.2/linux64/chrome-linux64.zip
 0:14.26 INFO Downloading Mojo bindings from https://storage.googleapis.com/chrome-for-testing-public/145.0.7572.2/mojojs.zip
 0:14.31 INFO MojoJS enabled automatically (mojojs_path: /home/test/web-platform-tests/_venv3/mojojs/gen)
 0:14.34 INFO Download info for matching ChromeDriver version found.
 0:14.34 INFO Downloading ChromeDriver from https://storage.googleapis.com/chrome-for-testing-public/145.0.7572.2/linux64/chromedriver-linux64.zip
 0:14.60 INFO Automatically turning on experimental features for Chrome Dev/Canary or Chromium trunk
 0:21.61 INFO Installed font: Ahem.ttf
 0:22.81 wptserve INFO Starting http server on http://127.0.0.1:8000
 0:22.85 wptserve INFO Starting http server on http://127.0.0.1:8001
 0:22.85 wptserve INFO Starting http server on http://127.0.0.1:8003
 0:22.89 wptserve INFO Starting http server on http://127.0.0.1:8002
 0:22.89 wptserve INFO Starting https server on https://127.0.0.1:8443
 0:22.91 wptserve INFO Create socket on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8888))
 0:22.91 wptserve INFO Bind on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8888))
 0:22.91 wptserve INFO Listen on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8888))
 0:22.91 wptserve INFO Starting https server on https://127.0.0.1:8446
 0:22.93 wptserve INFO Starting http2 server on https://127.0.0.1:9000
 0:22.94 wptserve INFO Create socket on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8889))
 0:22.94 wptserve INFO Bind on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8889))
 0:22.94 wptserve INFO Listen on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8889))
 0:22.95 wptserve INFO Starting https server on https://127.0.0.1:8444
 0:22.95 wptserve INFO Starting https server on https://127.0.0.1:8445
 0:23.04 wptserve INFO Starting WebTransport over HTTP/3 server on 127.0.0.1:11000
 0:23.26 SUITE_START: web-platform-test - running 1 tests
 0:43.40 INFO Using 1 child processes
 0:43.40 INFO Starting WebDriver: /home/test/web-platform-tests/_venv3/bin/chrome/chromedriver --port=41827 --ignore-explicit-port --url-base=/ --enable-chrome-logs --disable-build-check
 0:43.42 INFO Got WebDriver port 33581
 0:43.52 pid:2208 Full command: /home/test/web-platform-tests/_venv3/bin/chrome/chromedriver --port=41827 --ignore-explicit-port --url-base=/ --enable-chrome-logs --disable-build-check
pid:2208 Starting ChromeDriver 145.0.7572.2 (68918169e6422bcf7c8ca8cdea509443a35f96a4-refs/branch-heads/7572@{#6}) on port 0
 0:43.52 pid:2208 Only local connections are allowed.
 0:43.52 pid:2208 Please see https://chromedriver.chromium.org/security-considerations for suggestions on keeping ChromeDriver safe.
 0:43.52 pid:2208 ChromeDriver was started successfully on port 33581.
 0:43.52 INFO Webdriver started successfully.
 0:43.52 INFO Starting runner
mem avail: 14276 of 15806 MiB (90.32%), swap free:    0 of    0 MiB ( 0.00%)
 0:45.18 pid:2208 [1768001949.431][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.
 0:45.19 pid:2208 [2256:2256:0109/233909.439114:WARNING:ui/gfx/linux/gbm_support_x11.cc:49] dri3 extension not supported.
 0:45.20 pid:2208 [2256:2256:0109/233909.444720:WARNING:sandbox/policy/linux/sandbox_linux.cc:405] InitializeSandbox() called with multiple threads in process gpu-process.
Failed to read: session.screen0.titlebar.left
Setting default value
Failed to read: session.screen0.titlebar.right
Setting default value
 0:45.35 pid:2208 [2225:2225:0109/233909.596970:ERROR:dbus/object_proxy.cc:573] 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
 0:45.35 pid:2208 [2225:2225:0109/233909.597004:WARNING:dbus/property.cc:174] GetAll request failed for: org.freedesktop.UPower.Device
 0:45.38 pid:2208 [2225:2225:0109/233909.634080:WARNING:ui/base/idle/idle_linux.cc:113] None of the known D-Bus ScreenSaver services could be used.
 0:45.49 TEST_START: /html/semantics/embedded-content/media-elements/playing-the-media-resource/fragmented-mp4-end.html
 0:46.50 pid:2208 [2256:2256:0109/233910.747440:ERROR:gpu/command_buffer/service/shared_image/shared_image_manager.cc:397] SharedImageManager::ProduceSkia: Trying to Produce a Skia representation from a non-existent mailbox.
 0:46.50 pid:2208 [2256:2256:0109/233910.748142:ERROR:gpu/command_buffer/service/shared_image/shared_image_manager.cc:397] SharedImageManager::ProduceSkia: Trying to Produce a Skia representation from a non-existent mailbox.
 0:46.54 TEST_END: Test OK. Subtests passed 1/1. Unexpected 0
 0:46.54 INFO No more tests
 0:46.69 INFO Closing logging queue
 0:46.69 INFO queue closed
 0:46.77 SUITE_END

web-platform-test
~~~~~~~~~~~~~~~~~
Ran 2 checks (1 subtests, 1 tests)
Expected results: 2
Unexpected results: 0
OK
 0:46.77 INFO Got 0 unexpected results, with 0 unexpected passes
 0:46.77 wptserve INFO Stopped http server on 127.0.0.1:8000
 0:46.78 wptserve INFO Stopped http server on 127.0.0.1:8001
 0:46.78 wptserve INFO Stopped http server on 127.0.0.1:8443
 0:46.78 wptserve INFO Stopped http server on 127.0.0.1:8444
 0:46.79 wptserve INFO Stopped http server on 127.0.0.1:8003
 0:46.79 wptserve INFO Stopped http server on 127.0.0.1:8446
 0:46.79 wptserve INFO Stopped http server on 127.0.0.1:8002
 0:46.79 wptserve INFO Stopped http server on 127.0.0.1:8445
 0:46.80 wptserve INFO Stopped http server on 127.0.0.1:9000
 0:46.80 wptserve INFO Stopped WebTransport over HTTP/3 server on 127.0.0.1:11000
 0:47.29 wptserve INFO Close on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8889))
 0:47.30 wptserve INFO Close on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8888))
 0:47.46 INFO Removed font: Ahem.ttf
 0:47.50 INFO Closing logging queue
 0:47.50 INFO queue closed
[taskcluster 2026-01-09 23:39:14.585Z] === Task Finished ===
[taskcluster 2026-01-09 23:39:15.570Z] Successful task run with exit code: 0 completed in 134.822 seconds