Add META safe-printable-inset support to content_shell WPT runner. #59363
+231
−0
Community-TC Integration / wpt-firefox-nightly-results
succeeded
Apr 20, 2026 in 1h 56m 39s
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: 2026-04-20T22:06:14.610Z
Resolved: 2026-04-20T22:10:40.066Z
Task Execution Time: 4 minutes, 25 seconds, 456 milliseconds
Task Status: completed
Reason Resolved: completed
TaskId: FqBLiz0bTniUeYpkvRchHg
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 2026-04-20 22:06:14.683Z] Task ID: FqBLiz0bTniUeYpkvRchHg
[taskcluster 2026-04-20 22:06:14.683Z] Worker ID: 795245143896303855
[taskcluster 2026-04-20 22:06:14.683Z] Worker Group: us-east4-b
[taskcluster 2026-04-20 22:06:14.683Z] Worker Node Type: projects/757942385826/machineTypes/n2-standard-4
[taskcluster 2026-04-20 22:06:14.683Z] Worker Pool: proj-wpt/ci
[taskcluster 2026-04-20 22:06:14.683Z] Worker Version: 46.1.0
[taskcluster 2026-04-20 22:06:14.683Z] Public IP: 34.11.87.133
[taskcluster 2026-04-20 22:06:14.683Z] Hostname: proj-wpt-ci-hkbeu8qkto-ty2hmtkwthw
[taskcluster 2026-04-20 22:06:15.655Z] === 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
...(302 lines hidden)...
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
0:26.86 INFO Identified 3 affected tests
0:26.86 INFO Using certutil /usr/bin/certutil
0:26.86 INFO Downloading geckodriver
0:26.86 INFO Attempting to install webdriver from nightly
0:27.31 INFO Extracted geckodriver to /home/test/web-platform-tests/_venv3/bin/geckodriver
0:27.31 INFO Installed b'geckodriver 0.36.0 (c618caf8d6e8 2026-04-07 23:58 +0000)'
0:33.17 INFO Getting profile data from git ref d726ae1db1256a756397e55c9927cc785643642a
0:33.25 INFO Test prefs downloaded to /home/test/web-platform-tests/_venv3/profiles/d726ae1db1256a756397e55c9927cc785643642a/151.0a1
0:33.25 INFO Downloading OpenH264 plugin
0:39.41 INFO Downloading openh264.json from git ref d726ae1db1256a756397e55c9927cc785643642a
0:39.43 INFO Downloading OpenH264 plugin from https://ciscobinary.openh264.org/openh264-linux64-652bdb7719f30b52b08e506645a7322ff1b2cc6f.zip
0:39.58 INFO OpenH264 plugin installed to /home/test/web-platform-tests/_venv3/browsers/nightly/gmp-gmpopenh264/2.6.0
0:39.58 INFO Using OpenH264 plugin in /home/test/web-platform-tests/_venv3/browsers/nightly/gmp-gmpopenh264/2.6.0
[1324] Sandbox: CanCreateUserNamespace() clone() failure: EPERM
0:39.63 mozversion INFO application_buildid: 20260420091406
0:39.63 mozversion INFO application_changeset: 80bf65012815fc48526506ab8c0d239cbb3ba159
0:39.63 mozversion INFO application_display_name: Firefox Nightly
0:39.63 mozversion INFO application_id: {ec8030f7-c20a-464f-9b0e-13a3a9e97384}
0:39.63 mozversion INFO application_name: Firefox
0:39.63 mozversion INFO application_remotingname: firefox-nightly
0:39.63 mozversion INFO application_repository: https://hg.mozilla.org/mozilla-central
0:39.63 mozversion INFO application_vendor: Mozilla
0:39.63 mozversion INFO application_version: 151.0a1
0:39.63 mozversion INFO platform_buildid: 20260420091406
0:39.63 mozversion INFO platform_changeset: 80bf65012815fc48526506ab8c0d239cbb3ba159
0:39.63 mozversion INFO platform_repository: https://hg.mozilla.org/mozilla-central
0:39.63 mozversion INFO platform_version: 151.0a1
mem avail: 14580 of 15806 MiB (92.24%), swap free: 0 of 0 MiB ( 0.00%)
0:48.74 INFO Installed font: Ahem.ttf
0:49.62 wptserve INFO Starting http server on http://127.0.0.1:8000
0:49.65 wptserve INFO Starting https server on https://127.0.0.1:8444
0:49.65 wptserve INFO Starting http server on http://127.0.0.1:8001
0:49.66 wptserve INFO Starting http server on http://127.0.0.1:8002
0:49.67 wptserve INFO Starting https server on https://127.0.0.1:8443
0:49.69 wptserve INFO Starting http2 server on https://127.0.0.1:9000
0:49.69 wptserve INFO Starting http server on http://127.0.0.1:8003
0:49.70 wptserve INFO Create socket on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8888))
0:49.70 wptserve INFO Bind on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8888))
0:49.70 wptserve INFO Listen on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8888))
0:49.70 wptserve INFO Create socket on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8889))
0:49.70 wptserve INFO Bind on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8889))
0:49.70 wptserve INFO Listen on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8889))
0:49.71 wptserve INFO Starting https server on https://127.0.0.1:8446
0:49.74 wptserve INFO Starting https server on https://127.0.0.1:8445
0:49.82 wptserve INFO Starting WebTransport over HTTP/3 server on 127.0.0.1:11000
0:50.15 SUITE_START: web-platform-test - running 3 tests
1:00.23 INFO Using 1 child processes
1:00.24 INFO Setting up ssl
1:00.26 certutil Full command: /usr/bin/certutil -N -d /tmp/tmp6a3zuui9.mozrunner -f /tmp/tmp6a3zuui9.mozrunner/.crtdbpw
certutil b''
1:00.28 certutil b''
1:00.28 certutil b'\nCertificate Nickname Trust Attributes\n SSL,S/MIME,JAR/XPI\n\nweb-platform-tests CT,, \n'
1:00.28 INFO Application command: /home/test/build/firefox/firefox --marionette --remote-allow-system-access about:blank -profile /tmp/tmp4ptxzmbk
1:00.30 INFO Starting runner
1:00.30 pid:1432 Full command: /home/test/build/firefox/firefox --marionette --remote-allow-system-access about:blank
pid:1432 [1432] Sandbox: CanCreateUserNamespace() clone() failure: EPERM
1:00.85 pid:1432 1776723029430 Marionette INFO Marionette enabled
1:00.95 pid:1432 1776723029524 Marionette INFO Listening on port 60881
Failed to read: session.screen0.titlebar.left
Setting default value
Failed to read: session.screen0.titlebar.right
Setting default value
1:03.19 pid:1432 console.error: services.settings:
1:03.19 pid:1432 Message: EmptyDatabaseError: "main/nimbus-desktop-experiments" has not been synced yet
1:03.19 pid:1432 Stack:
1:03.19 pid:1432 EmptyDatabaseError@resource://services-settings/Database.sys.mjs:19:5
1:03.19 pid:1432 list@resource://services-settings/Database.sys.mjs:96:13
1:03.41 pid:1432 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 1229" data: no]
1:03.78 TEST_START: /css/css-page/tentative/safe-printable-inset-001-print.html
1:03.94 pid:1432 1776723032520 Marionette INFO Testing http://web-platform.test:8000/css/css-page/tentative/safe-printable-inset-001-print.html == http://web-platform.test:8000/css/css-page/tentative/safe-printable-inset-001-print-ref.html
1:04.43 pid:1432 1776723033008 Marionette INFO Rendering page 1/1
1:04.46 pid:1432 1776723033039 Marionette INFO Rendering page 1/1
1:04.49 pid:1432 1776723033071 Marionette INFO No differences allowed
1:04.50 TEST_END: FAIL, expected PASS - Testing http://web-platform.test:8000/css/css-page/tentative/safe-printable-inset-001-print.html == http://web-platform.test:8000/css/css-page/tentative/safe-printable-inset-001-print-ref.html
Found 62982 pixels different, maximum difference per channel 255 on page 1
1:04.50 TEST_START: /css/css-page/tentative/safe-printable-inset-002-print.html
1:04.50 pid:1432 1776723033079 Marionette INFO Testing http://web-platform.test:8000/css/css-page/tentative/safe-printable-inset-002-print.html == http://web-platform.test:8000/css/css-page/tentative/safe-printable-inset-002-print-ref.html
1:04.84 pid:1432 1776723033421 Marionette INFO Rendering page 1/1
1:04.88 pid:1432 1776723033461 Marionette INFO Rendering page 1/1
1:04.92 pid:1432 1776723033496 Marionette INFO No differences allowed
1:04.92 TEST_END: FAIL, expected PASS - Testing http://web-platform.test:8000/css/css-page/tentative/safe-printable-inset-002-print.html == http://web-platform.test:8000/css/css-page/tentative/safe-printable-inset-002-print-ref.html
Found 33637 pixels different, maximum difference per channel 255 on page 1
1:04.92 TEST_START: /css/css-page/tentative/safe-printable-inset-003-print.html
1:04.92 pid:1432 1776723033502 Marionette INFO Testing http://web-platform.test:8000/css/css-page/tentative/safe-printable-inset-003-print.html == http://web-platform.test:8000/css/css-page/tentative/safe-printable-inset-003-print-ref.html
1:05.26 pid:1432 1776723033838 Marionette INFO Rendering page 1/1
1:05.27 pid:1432 1776723033850 Marionette INFO Rendering page 1/1
1:05.29 pid:1432 1776723033866 Marionette INFO No differences allowed
1:05.29 TEST_END: FAIL, expected PASS - Testing http://web-platform.test:8000/css/css-page/tentative/safe-printable-inset-003-print.html == http://web-platform.test:8000/css/css-page/tentative/safe-printable-inset-003-print-ref.html
Found 31080 pixels different, maximum difference per channel 255 on page 1
1:05.29 INFO No more tests
1:05.32 pid:1432 1776723033894 Marionette INFO Stopped listening on port 60881
1:05.78 INFO Browser exited with return code 0
1:05.59 INFO Closing logging queue
1:05.59 INFO queue closed
1:05.79 SUITE_END
web-platform-test
~~~~~~~~~~~~~~~~~
Ran 3 checks (3 tests)
Expected results: 0
Unexpected results: 3
test: 3 (3 fail)
Error Summary
-------------
FAIL /css/css-page/tentative/safe-printable-inset-001-print.html - Testing http://web-platform.test:8000/css/css-page/tentative/safe-printable-inset-001-print.html == http://web-platform.test:8000/css/css-page/tentative/safe-printable-inset-001-print-ref.html
Found 62982 pixels different, maximum difference per channel 255 on page 1
FAIL /css/css-page/tentative/safe-printable-inset-002-print.html - Testing http://web-platform.test:8000/css/css-page/tentative/safe-printable-inset-002-print.html == http://web-platform.test:8000/css/css-page/tentative/safe-printable-inset-002-print-ref.html
Found 33637 pixels different, maximum difference per channel 255 on page 1
FAIL /css/css-page/tentative/safe-printable-inset-003-print.html - Testing http://web-platform.test:8000/css/css-page/tentative/safe-printable-inset-003-print.html == http://web-platform.test:8000/css/css-page/tentative/safe-printable-inset-003-print-ref.html
Found 31080 pixels different, maximum difference per channel 255 on page 1
1:05.79 INFO Got 3 unexpected results, with 0 unexpected passes
1:05.79 wptserve INFO Stopped http server on 127.0.0.1:8000
1:05.79 wptserve INFO Stopped http server on 127.0.0.1:8001
1:05.79 wptserve INFO Stopped http server on 127.0.0.1:8002
1:05.79 wptserve INFO Stopped http server on 127.0.0.1:8003
1:05.80 wptserve INFO Stopped http server on 127.0.0.1:8443
1:05.82 wptserve INFO Stopped http server on 127.0.0.1:8445
1:05.82 wptserve INFO Stopped http server on 127.0.0.1:8446
1:05.82 wptserve INFO Stopped http server on 127.0.0.1:8444
1:05.82 wptserve INFO Stopped http server on 127.0.0.1:9000
1:05.82 wptserve INFO Stopped WebTransport over HTTP/3 server on 127.0.0.1:11000
1:06.17 wptserve INFO Close on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8888))
1:06.17 wptserve INFO Close on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8889))
1:06.20 INFO Removed font: Ahem.ttf
1:06.23 INFO Closing logging queue
1:06.23 INFO queue closed
1:06.23 INFO Tolerating 3 unexpected results
[taskcluster 2026-04-20 22:10:37.289Z] === Task Finished ===
[taskcluster 2026-04-20 22:10:38.322Z] Successful task run with exit code: 0 completed in 263.64 seconds
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