[taskcluster 2026-01-08 11:00:06.450Z] Task ID: Jy0HVF10Tuqh0ynaHsIo1w
[taskcluster 2026-01-08 11:00:06.450Z] Worker ID: 5778557442458898546
[taskcluster 2026-01-08 11:00:06.450Z] Worker Group: us-east1-b
[taskcluster 2026-01-08 11:00:06.450Z] Worker Node Type: projects/757942385826/machineTypes/n2-standard-4
[taskcluster 2026-01-08 11:00:06.450Z] Worker Pool: proj-wpt/ci
[taskcluster 2026-01-08 11:00:06.450Z] Worker Version: 46.1.0
[taskcluster 2026-01-08 11:00:06.450Z] Public IP: 34.138.203.130
[taskcluster 2026-01-08 11:00:06.450Z] Hostname: proj-wpt-ci-zx5ugllzs0woiddy-0jgmg

[taskcluster 2026-01-08 11:00:07.550Z] === 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

...(303 lines hidden)...

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
 0:13.90 INFO Identified 1 affected tests
 0:13.90 INFO Using certutil /usr/bin/certutil
 0:13.90 INFO Downloading geckodriver
 0:13.90 INFO Attempting to install webdriver from nightly
 0:14.35 INFO Extracted geckodriver to /home/test/web-platform-tests/_venv3/bin/geckodriver
 0:14.35 INFO Installed b'geckodriver 0.36.0 (f3c4f3651e2d 2026-01-05 14:31 +0000)'
 0:19.46 INFO Getting profile data from git ref 8faede9a1ffe0eacdd56ab5761ad488d54f5a244
 0:19.85 INFO Test prefs downloaded to /home/test/web-platform-tests/_venv3/profiles/8faede9a1ffe0eacdd56ab5761ad488d54f5a244/148.0a1
[1327] Sandbox: CanCreateUserNamespace() clone() failure: EPERM
 0:20.00 mozversion INFO application_buildid: 20260107160934
 0:20.00 mozversion INFO application_changeset: b9e21434cf454a178ce807ed2fd2b891937aea7c
 0:20.00 mozversion INFO application_display_name: Firefox Nightly
 0:20.00 mozversion INFO application_id: {ec8030f7-c20a-464f-9b0e-13a3a9e97384}
 0:20.00 mozversion INFO application_name: Firefox
 0:20.00 mozversion INFO application_remotingname: firefox-nightly
 0:20.00 mozversion INFO application_repository: https://hg.mozilla.org/mozilla-central
 0:20.00 mozversion INFO application_vendor: Mozilla
 0:20.00 mozversion INFO application_version: 148.0a1
 0:20.00 mozversion INFO platform_buildid: 20260107160934
 0:20.00 mozversion INFO platform_changeset: b9e21434cf454a178ce807ed2fd2b891937aea7c
 0:20.00 mozversion INFO platform_repository: https://hg.mozilla.org/mozilla-central
 0:20.00 mozversion INFO platform_version: 148.0a1
 0:26.54 INFO Installed font: Ahem.ttf
mem avail: 14534 of 15806 MiB (91.96%), swap free:    0 of    0 MiB ( 0.00%)
 0:27.78 wptserve INFO Starting http server on http://127.0.0.1:8002
 0:27.79 wptserve INFO Starting http server on http://127.0.0.1:8000
 0:27.81 wptserve INFO Starting http server on http://127.0.0.1:8003
 0:27.82 wptserve INFO Starting http server on http://127.0.0.1:8001
 0:27.85 wptserve INFO Starting https server on https://127.0.0.1:8445
 0:27.86 wptserve INFO Starting https server on https://127.0.0.1:8446
 0:27.87 wptserve INFO Starting https server on https://127.0.0.1:8443
 0:27.87 wptserve INFO Starting https server on https://127.0.0.1:8444
 0:27.88 wptserve INFO Starting http2 server on https://127.0.0.1:9000
 0:27.89 wptserve INFO Create socket on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8888))
 0:27.89 wptserve INFO Bind on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8888))
 0:27.89 wptserve INFO Listen on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8888))
 0:27.89 wptserve INFO Create socket on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8889))
 0:27.90 wptserve INFO Bind on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8889))
 0:27.90 wptserve INFO Listen on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8889))
 0:28.00 wptserve INFO Starting WebTransport over HTTP/3 server on 127.0.0.1:11000
 0:28.22 SUITE_START: web-platform-test - running 8 tests
 1:00.36 INFO Using 1 child processes
 1:00.38 INFO Setting up ssl
 1:00.41 certutil Full command: /usr/bin/certutil -N -d /tmp/tmpxq_ach9z.mozrunner -f /tmp/tmpxq_ach9z.mozrunner/.crtdbpw
certutil b''
 1:00.44 certutil b''
 1:00.44 certutil b'\nCertificate Nickname                                         Trust Attributes\n                                                             SSL,S/MIME,JAR/XPI\n\nweb-platform-tests                                           CT,, \n'
 1:00.45 INFO Application command: /home/test/build/firefox/firefox --marionette --remote-allow-system-access about:blank -profile /tmp/tmpzpgfvxko
 1:00.46 INFO Starting runner
 1:00.46 pid:1431 Full command: /home/test/build/firefox/firefox --marionette --remote-allow-system-access about:blank
pid:1431 [1431] Sandbox: CanCreateUserNamespace() clone() failure: EPERM
 1:01.27 pid:1431 1767870156402	Marionette	INFO	Marionette enabled
 1:01.39 pid:1431 1767870156523	Marionette	INFO	Listening on port 39739
Failed to read: session.screen0.titlebar.left
Setting default value
Failed to read: session.screen0.titlebar.right
Setting default value
 1:04.04 pid:1431 [GFX1-]: Calling WaitFlushedEvent::Run: is delayed: 2060
 1:04.75 pid:1431 console.error: services.settings:
 1:04.75 pid:1431   Message: EmptyDatabaseError: "main/nimbus-desktop-experiments" has not been synced yet
 1:04.75 pid:1431   Stack:
 1:04.75 pid:1431     EmptyDatabaseError@resource://services-settings/Database.sys.mjs:19:5
 1:04.75 pid:1431 list@resource://services-settings/Database.sys.mjs:96:13
 1:04.92 pid:1431 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 1245"  data: no]
 1:05.21 TEST_START: /event-timing/idlharness.any.sharedworker.html?exclude=targetSelector
 1:06.26 TEST_END: Test OK. Subtests passed 14/14. Unexpected 0
 1:06.26 TEST_START: /event-timing/idlharness.any.sharedworker.html?include=targetSelector
 1:06.26 INFO Closing window 84eae9fa-7252-46d8-a24f-6255c323b346
 1:06.57 TEST_END: Test OK. Subtests passed 2/2. Unexpected 0
 1:06.57 TEST_START: /event-timing/idlharness.any.worker.html?include=targetSelector
 1:06.58 INFO Closing window d8df3034-2023-4001-a3fc-38528c14ea40
 1:07.01 TEST_END: Test OK. Subtests passed 2/2. Unexpected 0
 1:07.01 TEST_START: /event-timing/idlharness.any.html?include=targetSelector
 1:07.05 INFO Closing window d728554b-25fe-4e6f-98c6-f981dc7defcf
 1:07.33 TEST_END: Test OK. Subtests passed 2/2. Unexpected 0
 1:07.33 TEST_START: /event-timing/idlharness.any.html?exclude=targetSelector
 1:07.33 INFO Closing window 644a201b-e1a7-4254-a41e-4a4eef11a7d5
 1:07.75 TEST_END: Test OK. Subtests passed 31/32. Unexpected 1
FAIL PerformanceEventTiming interface: attribute targetSelector - assert_true: The prototype object must have a property "targetSelector" expected true got false
IdlInterface.prototype.test_member_attribute/<@http://web-platform.test:8000/resources/idlharness.js:2223:24
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
IdlInterface.prototype.test_member_attribute@http://web-platform.test:8000/resources/idlharness.js:2170:12
IdlInterface.prototype.test_members@http://web-platform.test:8000/resources/idlharness.js:2712:22
IdlInterface.prototype.test@http://web-platform.test:8000/resources/idlharness.js:1448:10
IdlArray.prototype.test@http://web-platform.test:8000/resources/idlharness.js:749:28
idl_test/</<@http://web-platform.test:8000/resources/idlharness.js:3546:31

 1:07.75 TEST_START: /event-timing/idlharness.any.serviceworker.html?exclude=targetSelector
 1:07.76 INFO Closing window a90aacdd-4186-44aa-b2b5-833f5ab11265
 1:08.44 TEST_END: Test OK. Subtests passed 14/14. Unexpected 0
 1:08.45 TEST_START: /event-timing/idlharness.any.worker.html?exclude=targetSelector
 1:08.45 INFO Closing window 1b89c19b-49aa-45e4-abb0-79fe4f069aea
 1:08.86 TEST_END: Test OK. Subtests passed 14/14. Unexpected 0
 1:08.86 TEST_START: /event-timing/idlharness.any.serviceworker.html?include=targetSelector
 1:08.87 INFO Closing window bbb9ae70-d128-41c2-b444-98a8bf498ca1
 1:09.45 TEST_END: Test OK. Subtests passed 2/2. Unexpected 0
 1:09.45 INFO No more tests
 1:09.45 pid:1431 1767870164590	Marionette	INFO	Stopped listening on port 39739
 1:10.26 INFO Browser exited with return code -15
 1:10.09 INFO Closing logging queue
 1:10.09 INFO queue closed
 1:10.28 SUITE_END

web-platform-test
~~~~~~~~~~~~~~~~~
Ran 90 checks (82 subtests, 8 tests)
Expected results: 89
Unexpected results: 1
  subtest: 1 (1 fail)

Unexpected Results
------------------
/event-timing/idlharness.any.html?exclude=targetSelector
  FAIL PerformanceEventTiming interface: attribute targetSelector - assert_true: The prototype object must have a property "targetSelector" expected true got false
IdlInterface.prototype.test_member_attribute/<@http://web-platform.test:8000/resources/idlharness.js:2223:24
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
IdlInterface.prototype.test_member_attribute@http://web-platform.test:8000/resources/idlharness.js:2170:12
IdlInterface.prototype.test_members@http://web-platform.test:8000/resources/idlharness.js:2712:22
IdlInterface.prototype.test@http://web-platform.test:8000/resources/idlharness.js:1448:10
IdlArray.prototype.test@http://web-platform.test:8000/resources/idlharness.js:749:28
idl_test/</<@http://web-platform.test:8000/resources/idlharness.js:3546:31
 1:10.28 INFO Got 1 unexpected results, with 0 unexpected passes
 1:10.28 wptserve INFO Stopped http server on 127.0.0.1:8000
 1:10.28 wptserve INFO Stopped http server on 127.0.0.1:8001
 1:10.28 wptserve INFO Stopped http server on 127.0.0.1:8003
 1:10.29 wptserve INFO Stopped http server on 127.0.0.1:8002
 1:10.29 wptserve INFO Stopped http server on 127.0.0.1:8443
 1:10.29 wptserve INFO Stopped http server on 127.0.0.1:8444
 1:10.29 wptserve INFO Stopped http server on 127.0.0.1:8446
 1:10.29 wptserve INFO Stopped http server on 127.0.0.1:8445
 1:10.30 wptserve INFO Stopped http server on 127.0.0.1:9000
 1:10.30 wptserve INFO Stopped WebTransport over HTTP/3 server on 127.0.0.1:11000
 1:10.77 wptserve INFO Close on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8888))
 1:10.77 wptserve INFO Close on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8889))
 1:10.82 INFO Removed font: Ahem.ttf
 1:10.86 INFO Closing logging queue
 1:10.86 INFO queue closed
 1:10.86 INFO Tolerating 1 unexpected results
[taskcluster 2026-01-08 11:02:48.226Z] === Task Finished ===
[taskcluster 2026-01-08 11:02:49.209Z] Successful task run with exit code: 0 completed in 162.759 seconds