[Gecko Bug 2008537] Add a simple reftest to confirm default anchor-center justification is 'safe'. #56992
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: 2026-01-05T18:09:41.125Z
Resolved: 2026-01-05T18:12:13.546Z
Task Execution Time: 2 minutes, 32 seconds, 421 milliseconds
Task Status: completed
Reason Resolved: completed
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 2026-01-05 18:09:41.237Z] Task ID: Xic5Krf9T9aIODIDzDaKaA
[taskcluster 2026-01-05 18:09:41.237Z] Worker ID: 2536923694617740158
[taskcluster 2026-01-05 18:09:41.237Z] Worker Group: us-east1-b
[taskcluster 2026-01-05 18:09:41.237Z] Worker Node Type: projects/757942385826/machineTypes/n2-standard-4
[taskcluster 2026-01-05 18:09:41.237Z] Worker Pool: proj-wpt/ci
[taskcluster 2026-01-05 18:09:41.237Z] Worker Version: 46.1.0
[taskcluster 2026-01-05 18:09:41.237Z] Public IP: 35.229.37.81
[taskcluster 2026-01-05 18:09:41.237Z] Hostname: proj-wpt-ci-zh8r3c03rx-ceh4ond57ng
[taskcluster 2026-01-05 18:09:41.968Z] === 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
...(268 lines hidden)...
Failed to read: session.screen0.defaultDeco
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Failed to read: session.screen0.tab.placement
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Failed to read: session.screen0.windowMenu
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Failed to read: session.screen0.noFocusWhileTypingDelay
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Failed to read: session.screen0.workspaces
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Failed to read: session.screen0.edgeSnapThreshold
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Failed to read: session.screen0.window.focus.alpha
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Failed to read: session.screen0.window.unfocus.alpha
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Failed to read: session.screen0.menu.alpha
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Failed to read: session.screen0.menuDelay
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Failed to read: session.screen0.tab.width
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Failed to read: session.screen0.tooltipDelay
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Failed to read: session.screen0.allowRemoteActions
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Failed to read: session.screen0.clientMenu.usePixmap
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Failed to read: session.screen0.tabs.usePixmap
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Failed to read: session.screen0.tabs.intitlebar
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Failed to read: session.screen0.focusModel
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Failed to read: session.screen0.tabFocusModel
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Failed to read: session.screen0.focusNewWindows
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Failed to read: session.screen0.focusSameHead
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Failed to read: session.screen0.rowPlacementDirection
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Failed to read: session.screen0.colPlacementDirection
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Failed to read: session.screen0.windowPlacement
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Failed to read: session.screen0.slit.acceptKdeDockapps
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Failed to read: session.screen0.slit.autoHide
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Failed to read: session.screen0.slit.maxOver
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Failed to read: session.screen0.slit.placement
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Failed to read: session.screen0.slit.alpha
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Failed to read: session.screen0.slit.onhead
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Failed to read: session.screen0.slit.layer
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Failed to read: session.screen0.toolbar.autoHide
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Failed to read: session.screen0.toolbar.visible
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Failed to read: session.screen0.toolbar.alpha
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Failed to read: session.screen0.toolbar.layer
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Failed to read: session.screen0.toolbar.onhead
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Failed to read: session.screen0.toolbar.placement
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Failed to read: session.screen0.toolbar.height
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Failed to read: session.screen0.iconbar.mode
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Failed to read: session.screen0.iconbar.alignment
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Failed to read: session.screen0.iconbar.iconWidth
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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
mem avail: 14653 of 15806 MiB (92.71%), swap free: 0 of 0 MiB ( 0.00%)
0:48.05 INFO Identified 1 affected tests
0:48.05 INFO Using certutil /usr/bin/certutil
0:48.05 INFO Downloading geckodriver
0:48.05 INFO Attempting to install webdriver from nightly
0:48.43 INFO Extracted geckodriver to /home/test/web-platform-tests/_venv3/bin/geckodriver
0:48.43 INFO Installed b'geckodriver 0.36.0 (d8f2204a567d 2025-12-25 08:29 +0000)'
0:52.53 INFO Getting profile data from git ref 33bba5cfe4a89dda0ee07fa9fbac578353713fd3
0:53.01 INFO Test prefs downloaded to /home/test/web-platform-tests/_venv3/profiles/33bba5cfe4a89dda0ee07fa9fbac578353713fd3/148.0a1
[1329] Sandbox: CanCreateUserNamespace() clone() failure: EPERM
0:53.11 mozversion INFO application_buildid: 20260105095346
0:53.11 mozversion INFO application_changeset: 906931f3ec40d7cf59752fdfb019736310aa2183
0:53.11 mozversion INFO application_display_name: Firefox Nightly
0:53.11 mozversion INFO application_id: {ec8030f7-c20a-464f-9b0e-13a3a9e97384}
0:53.11 mozversion INFO application_name: Firefox
0:53.11 mozversion INFO application_remotingname: firefox-nightly
0:53.11 mozversion INFO application_repository: https://hg.mozilla.org/mozilla-central
0:53.11 mozversion INFO application_vendor: Mozilla
0:53.11 mozversion INFO application_version: 148.0a1
0:53.11 mozversion INFO platform_buildid: 20260105095346
0:53.11 mozversion INFO platform_changeset: 906931f3ec40d7cf59752fdfb019736310aa2183
0:53.11 mozversion INFO platform_repository: https://hg.mozilla.org/mozilla-central
0:53.11 mozversion INFO platform_version: 148.0a1
0:58.31 INFO Installed font: Ahem.ttf
0:59.34 wptserve INFO Starting http server on http://127.0.0.1:8002
0:59.34 wptserve INFO Starting http server on http://127.0.0.1:8000
0:59.34 wptserve INFO Starting http server on http://127.0.0.1:8003
0:59.34 wptserve INFO Starting https server on https://127.0.0.1:8446
0:59.34 wptserve INFO Starting http server on http://127.0.0.1:8001
0:59.34 wptserve INFO Starting https server on https://127.0.0.1:8445
0:59.34 wptserve INFO Starting https server on https://127.0.0.1:8444
0:59.34 wptserve INFO Starting https server on https://127.0.0.1:8443
0:59.34 wptserve INFO Starting http2 server on https://127.0.0.1:9000
0:59.34 wptserve INFO Create socket on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8888))
0:59.34 wptserve INFO Bind on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8888))
0:59.34 wptserve INFO Listen on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8888))
0:59.34 wptserve INFO Create socket on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8889))
0:59.34 wptserve INFO Bind on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8889))
0:59.34 wptserve INFO Listen on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8889))
0:59.40 wptserve INFO Starting WebTransport over HTTP/3 server on 127.0.0.1:11000
0:59.68 SUITE_START: web-platform-test - running 1 tests
1:21.58 INFO Using 1 child processes
1:21.60 INFO Setting up ssl
1:21.62 certutil Full command: /usr/bin/certutil -N -d /tmp/tmpg51jp1d5.mozrunner -f /tmp/tmpg51jp1d5.mozrunner/.crtdbpw
certutil b''
1:21.63 certutil b''
1:21.64 certutil b'\nCertificate Nickname Trust Attributes\n SSL,S/MIME,JAR/XPI\n\nweb-platform-tests CT,, \n'
1:21.64 INFO Application command: /home/test/build/firefox/firefox --marionette --remote-allow-system-access about:blank -profile /tmp/tmp3kpm4sy1
1:21.65 INFO Starting runner
1:21.65 pid:1436 Full command: /home/test/build/firefox/firefox --marionette --remote-allow-system-access about:blank
pid:1436 [1436] Sandbox: CanCreateUserNamespace() clone() failure: EPERM
1:22.29 pid:1436 1767636724510 Marionette INFO Marionette enabled
1:22.42 pid:1436 1767636724635 Marionette INFO Listening on port 60645
Failed to read: session.screen0.titlebar.left
Setting default value
Failed to read: session.screen0.titlebar.right
Setting default value
1:25.20 pid:1436 [GFX1-]: Calling WaitFlushedEvent::Run: is delayed: 2205
1:25.67 pid:1436 console.error: services.settings:
1:25.67 pid:1436 Message: EmptyDatabaseError: "main/nimbus-desktop-experiments" has not been synced yet
1:25.67 pid:1436 Stack:
1:25.67 pid:1436 EmptyDatabaseError@resource://services-settings/Database.sys.mjs:19:5
1:25.67 pid:1436 list@resource://services-settings/Database.sys.mjs:96:13
1:25.98 pid:1436 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]
1:26.14 TEST_START: /css/css-anchor-position/position-area-justify-self-safe-001.html
1:26.47 pid:1436 1767636728692 Marionette INFO Testing http://web-platform.test:8000/css/css-anchor-position/position-area-justify-self-safe-001.html == http://web-platform.test:8000/css/css-anchor-position/position-area-justify-self-safe-001-ref.html
1:26.78 pid:1436 1767636728996 Marionette INFO No differences allowed
1:26.80 TEST_END: FAIL, expected PASS - Testing http://web-platform.test:8000/css/css-anchor-position/position-area-justify-self-safe-001.html == http://web-platform.test:8000/css/css-anchor-position/position-area-justify-self-safe-001-ref.html
Found 2800 pixels different, maximum difference per channel 255
1:26.80 INFO No more tests
1:26.83 pid:1436 1767636729049 Marionette INFO Stopped listening on port 60645
1:27.52 INFO Browser exited with return code -15
1:27.40 INFO Closing logging queue
1:27.40 INFO queue closed
1:27.53 SUITE_END
web-platform-test
~~~~~~~~~~~~~~~~~
Ran 1 checks (1 tests)
Expected results: 0
Unexpected results: 1
test: 1 (1 fail)
Unexpected Results
------------------
FAIL /css/css-anchor-position/position-area-justify-self-safe-001.html - Testing http://web-platform.test:8000/css/css-anchor-position/position-area-justify-self-safe-001.html == http://web-platform.test:8000/css/css-anchor-position/position-area-justify-self-safe-001-ref.html
Found 2800 pixels different, maximum difference per channel 255
1:27.53 INFO Got 1 unexpected results, with 0 unexpected passes
1:27.53 wptserve INFO Stopped http server on 127.0.0.1:8000
1:27.53 wptserve INFO Stopped http server on 127.0.0.1:8002
1:27.53 wptserve INFO Stopped http server on 127.0.0.1:8001
1:27.55 wptserve INFO Stopped http server on 127.0.0.1:8444
1:27.55 wptserve INFO Stopped http server on 127.0.0.1:8443
1:27.55 wptserve INFO Stopped http server on 127.0.0.1:8446
1:27.55 wptserve INFO Stopped http server on 127.0.0.1:9000
1:27.56 wptserve INFO Stopped http server on 127.0.0.1:8445
1:27.56 wptserve INFO Stopped http server on 127.0.0.1:8003
1:27.56 wptserve INFO Stopped WebTransport over HTTP/3 server on 127.0.0.1:11000
1:27.71 wptserve INFO Close on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8889))
1:27.72 wptserve INFO Close on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8888))
1:27.75 INFO Removed font: Ahem.ttf
1:27.77 INFO Closing logging queue
1:27.77 INFO queue closed
1:27.77 INFO Tolerating 1 unexpected results
[taskcluster 2026-01-05 18:12:11.202Z] === Task Finished ===
[taskcluster 2026-01-05 18:12:12.253Z] Successful task run with exit code: 0 completed in 151.017 seconds