[taskcluster 2026-07-20 11:00:42.851Z] Task ID: EmvRzCKHR-i5ODlgXyNm7A
[taskcluster 2026-07-20 11:00:42.851Z] Worker ID: 2424526603748909288
[taskcluster 2026-07-20 11:00:42.851Z] Worker Group: us-east4-c
[taskcluster 2026-07-20 11:00:42.851Z] Worker Node Type: projects/757942385826/machineTypes/n2-standard-4
[taskcluster 2026-07-20 11:00:42.851Z] Worker Pool: proj-wpt/ci
[taskcluster 2026-07-20 11:00:42.851Z] Worker Version: 46.1.0
[taskcluster 2026-07-20 11:00:42.851Z] Public IP: 34.150.186.112
[taskcluster 2026-07-20 11:00:42.851Z] Hostname: proj-wpt-ci-wc9rsmwgs7es1pcf6uzgdg

[taskcluster 2026-07-20 11:00:43.773Z] === 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

...(375 lines hidden)...

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
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
 0:34.98 INFO Identified 1 affected tests
 0:34.98 INFO Installing browser
 0:35.00 INFO Downloading Chrome for Testing from https://storage.googleapis.com/chrome-for-testing-public/152.0.7953.3/linux64/chrome-linux64.zip
 0:38.25 INFO Downloading Mojo bindings from https://storage.googleapis.com/chrome-for-testing-public/152.0.7953.3/mojojs.zip
 0:38.30 INFO MojoJS enabled automatically (mojojs_path: /home/test/web-platform-tests/_venv3/mojojs/gen)
 0:38.33 INFO Download info for matching ChromeDriver version found.
 0:38.33 INFO Downloading ChromeDriver from https://storage.googleapis.com/chrome-for-testing-public/152.0.7953.3/linux64/chromedriver-linux64.zip
 0:38.56 INFO Automatically turning on experimental features
mem avail: 14446 of 15806 MiB (91.40%), swap free:    0 of    0 MiB ( 0.00%)
 0:48.11 INFO Installed font: Ahem.ttf
 0:49.09 wptserve INFO Starting http server on http://127.0.0.1:8000
 0:49.09 wptserve INFO Starting http server on http://127.0.0.1:8002
 0:49.14 wptserve INFO Starting http server on http://127.0.0.1:8001
 0:49.15 wptserve INFO Starting https server on https://127.0.0.1:8445
 0:49.16 wptserve INFO Starting https server on https://127.0.0.1:8444
 0:49.16 wptserve INFO Starting https server on https://127.0.0.1:8443
 0:49.17 wptserve INFO Starting http server on http://127.0.0.1:8003
 0:49.18 wptserve INFO Create socket on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8888))
 0:49.18 wptserve INFO Bind on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8888))
 0:49.18 wptserve INFO Listen on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8888))
 0:49.18 wptserve INFO Starting https server on https://127.0.0.1:8446
 0:49.19 wptserve INFO Starting http2 server on https://127.0.0.1:9000
 0:49.19 wptserve INFO Create socket on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8889))
 0:49.20 wptserve INFO Bind on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8889))
 0:49.20 wptserve INFO Listen on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8889))
 0:49.26 wptserve INFO Starting WebTransport over HTTP/3 server on 127.0.0.1:11000
 0:49.49 SUITE_START: web-platform-test - running 1 tests
 0:53.76 INFO Using 1 child processes
 0:53.76 INFO Starting WebDriver: /home/test/web-platform-tests/_venv3/bin/chrome/chromedriver --port=48691 --ignore-explicit-port --url-base=/ --enable-chrome-logs --disable-build-check
 0:53.78 INFO Got WebDriver port 34401
 0:53.88 pid:2846 Full command: /home/test/web-platform-tests/_venv3/bin/chrome/chromedriver --port=48691 --ignore-explicit-port --url-base=/ --enable-chrome-logs --disable-build-check
pid:2846 Starting ChromeDriver 152.0.7953.3 (25e10d37cc918cbb2d4bfd448affabf80f9ce46d-refs/branch-heads/7953@{#6}) on port 0
 0:53.88 pid:2846 Only local connections are allowed.
 0:53.88 pid:2846 Please see https://chromedriver.chromium.org/security-considerations for suggestions on keeping ChromeDriver safe.
 0:53.88 pid:2846 ChromeDriver was started successfully on port 34401.
 0:53.88 INFO Webdriver started successfully.
 0:53.88 INFO Starting runner
 0:55.03 pid:2846 [2894:2894:0720/110554.310271:WARNING:media/gpu/vaapi/vaapi_wrapper.cc:1655] drmGetDevices2() has not found any devices
 0:55.03 pid:2846 [2894:2894:0720/110554.315271:WARNING:sandbox/policy/linux/sandbox_linux.cc:405] InitializeSandbox() called with multiple threads in process gpu-process.
 0:55.04 pid:2846 [2894:2894:0720/110554.318564:WARNING:ui/gfx/linux/gbm_support_x11.cc:48] dri3 extension not supported.
 0:55.06 pid:2846 [1784545554.344][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.
 0:55.13 pid:2846 [2961:2961:0720/110554.409404:WARNING:content/child/runtime_features.cc:580] AttributionReporting cannot be enabled in this configuration. Use --enable-features=ConversionMeasurement in addition.
 0:55.19 pid:2846 [2973:2973:0720/110554.473167:WARNING:content/child/runtime_features.cc:580] AttributionReporting cannot be enabled in this configuration. Use --enable-features=ConversionMeasurement in addition.
 0:55.20 pid:2846 [2863:2863:0720/110554.481766: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
 0:55.20 pid:2846 [2863:2863:0720/110554.482385:WARNING:dbus/property.cc:174] GetAll request failed for: org.freedesktop.UPower.Device
Failed to read: session.screen0.titlebar.left
Setting default value
Failed to read: session.screen0.titlebar.right
Setting default value
 0:55.23 pid:2846 [2863:2863:0720/110554.517143:WARNING:ui/base/idle/idle_linux.cc:111] None of the known D-Bus ScreenSaver services could be used.
 0:55.25 pid:2846 [2985:2985:0720/110554.529932:WARNING:content/child/runtime_features.cc:580] AttributionReporting cannot be enabled in this configuration. Use --enable-features=ConversionMeasurement in addition.
 0:55.30 pid:2846 [2997:2997:0720/110554.587449:WARNING:content/child/runtime_features.cc:580] AttributionReporting cannot be enabled in this configuration. Use --enable-features=ConversionMeasurement in addition.
 0:55.35 TEST_START: /editing/crashtests/forwarddelete-after-editable-slot-element-outside-body.html
 0:55.74 TEST_END: PASS
 0:55.74 INFO No more tests
 0:55.79 INFO Closing logging queue
 0:55.79 INFO queue closed
 0:55.85 SUITE_END

web-platform-test
~~~~~~~~~~~~~~~~~
Ran 1 checks (1 tests)
Expected results: 1
Unexpected results: 0
OK
 0:55.85 INFO Got 0 unexpected results, with 0 unexpected passes
 0:55.85 wptserve INFO Stopped http server on 127.0.0.1:8000
 0:55.86 wptserve INFO Stopped http server on 127.0.0.1:8001
 0:55.86 wptserve INFO Stopped http server on 127.0.0.1:8002
 0:55.86 wptserve INFO Stopped http server on 127.0.0.1:8003
 0:55.86 wptserve INFO Stopped http server on 127.0.0.1:8443
 0:55.87 wptserve INFO Stopped http server on 127.0.0.1:8445
 0:55.87 wptserve INFO Stopped http server on 127.0.0.1:8444
 0:55.88 wptserve INFO Stopped http server on 127.0.0.1:8446
 0:55.88 wptserve INFO Stopped http server on 127.0.0.1:9000
 0:55.88 wptserve INFO Stopped WebTransport over HTTP/3 server on 127.0.0.1:11000
 0:56.00 wptserve INFO Close on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8888))
 0:56.00 wptserve INFO Close on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8889))
 0:56.05 INFO Removed font: Ahem.ttf
 0:56.08 INFO Closing logging queue
 0:56.08 INFO queue closed
[taskcluster 2026-07-20 11:05:58.228Z] === Task Finished ===
[taskcluster 2026-07-20 11:05:59.203Z] Successful task run with exit code: 0 completed in 316.352 seconds