Correctly propagate scroll margin for ancestor scroll into view #57422
+314
−0
Community-TC Integration / wpt-firefox-nightly-results
succeeded
Jan 29, 2026 in 8m 56s
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: 2026-01-29T19:47:39.797Z
Resolved: 2026-01-29T19:49:28.722Z
Task Execution Time: 1 minute, 48 seconds, 925 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 2026-01-29 19:47:39.993Z] Task ID: csIvWY8yQXGixjEzpy0sHg
[taskcluster 2026-01-29 19:47:39.993Z] Worker ID: 7245685414270733929
[taskcluster 2026-01-29 19:47:39.993Z] Worker Group: us-east4-c
[taskcluster 2026-01-29 19:47:39.993Z] Worker Node Type: projects/757942385826/machineTypes/n2-standard-4
[taskcluster 2026-01-29 19:47:39.993Z] Worker Pool: proj-wpt/ci
[taskcluster 2026-01-29 19:47:39.993Z] Worker Version: 46.1.0
[taskcluster 2026-01-29 19:47:39.993Z] Public IP: 34.48.117.158
[taskcluster 2026-01-29 19:47:39.993Z] Hostname: proj-wpt-ci-r4fhhbl4tuwkezhuobhesg
[taskcluster 2026-01-29 19:47:40.660Z] === 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
...(282 lines hidden)...
Failed to read: session.screen0.window.unfocus.alpha
Setting default value
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
Setting default value
Failed to read: session.screen0.tabs.usePixmap
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Failed to read: session.screen0.tabs.maxOver
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Failed to read: session.screen0.tabs.intitlebar
Setting default value
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
Setting default value
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
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
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Failed to read: session.screen0.slit.placement
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Failed to read: session.screen0.slit.alpha
Setting default value
Failed to read: session.screen0.slit.onhead
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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
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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
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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
Setting default value
Failed to read: session.screen0.iconbar.alignment
Setting default value
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
0:11.26 INFO Identified 1 affected tests
0:11.26 INFO Using certutil /usr/bin/certutil
0:11.26 INFO Downloading geckodriver
0:11.26 INFO Attempting to install webdriver from nightly
0:11.63 INFO Extracted geckodriver to /home/test/web-platform-tests/_venv3/bin/geckodriver
0:11.63 INFO Installed b'geckodriver 0.36.0 (e4823d45161d 2026-01-23 15:59 +0000)'
0:17.40 INFO Getting profile data from git ref b9f2d3939e804036b14da30853fac7610892782f
0:17.49 INFO Test prefs downloaded to /home/test/web-platform-tests/_venv3/profiles/b9f2d3939e804036b14da30853fac7610892782f/149.0a1
[1320] Sandbox: CanCreateUserNamespace() clone() failure: EPERM
0:17.61 mozversion INFO application_buildid: 20260129094811
0:17.61 mozversion INFO application_changeset: ed820097373b2a66fc2d4fcede636dfe2553a08c
0:17.61 mozversion INFO application_display_name: Firefox Nightly
0:17.61 mozversion INFO application_id: {ec8030f7-c20a-464f-9b0e-13a3a9e97384}
0:17.61 mozversion INFO application_name: Firefox
0:17.61 mozversion INFO application_remotingname: firefox-nightly
0:17.61 mozversion INFO application_repository: https://hg.mozilla.org/mozilla-central
0:17.61 mozversion INFO application_vendor: Mozilla
0:17.61 mozversion INFO application_version: 149.0a1
0:17.61 mozversion INFO platform_buildid: 20260129094811
0:17.61 mozversion INFO platform_changeset: ed820097373b2a66fc2d4fcede636dfe2553a08c
0:17.61 mozversion INFO platform_repository: https://hg.mozilla.org/mozilla-central
0:17.61 mozversion INFO platform_version: 149.0a1
0:23.21 INFO Installed font: Ahem.ttf
0:24.15 wptserve INFO Starting http server on http://127.0.0.1:8002
0:24.18 wptserve INFO Starting http server on http://127.0.0.1:8001
0:24.20 wptserve INFO Starting https server on https://127.0.0.1:8445
0:24.20 wptserve INFO Starting https server on https://127.0.0.1:8446
0:24.20 wptserve INFO Starting http server on http://127.0.0.1:8000
0:24.25 wptserve INFO Starting http server on http://127.0.0.1:8003
0:24.26 wptserve INFO Starting https server on https://127.0.0.1:8443
0:24.26 wptserve INFO Starting https server on https://127.0.0.1:8444
0:24.28 wptserve INFO Starting http2 server on https://127.0.0.1:9000
0:24.28 wptserve INFO Create socket on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8888))
0:24.28 wptserve INFO Bind on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8888))
0:24.28 wptserve INFO Listen on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8888))
0:24.30 wptserve INFO Create socket on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8889))
0:24.30 wptserve INFO Bind on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8889))
0:24.30 wptserve INFO Listen on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8889))
0:24.34 wptserve INFO Starting WebTransport over HTTP/3 server on 127.0.0.1:11000
0:24.68 SUITE_START: web-platform-test - running 1 tests
0:39.63 INFO Using 1 child processes
0:39.65 INFO Setting up ssl
0:39.67 certutil Full command: /usr/bin/certutil -N -d /tmp/tmpu2al5go6.mozrunner -f /tmp/tmpu2al5go6.mozrunner/.crtdbpw
certutil b''
0:39.68 certutil b''
0:39.69 certutil b'\nCertificate Nickname Trust Attributes\n SSL,S/MIME,JAR/XPI\n\nweb-platform-tests CT,, \n'
0:39.69 INFO Application command: /home/test/build/firefox/firefox --marionette --remote-allow-system-access about:blank -profile /tmp/tmp4twic1n7
0:39.70 INFO Starting runner
0:39.70 pid:1424 Full command: /home/test/build/firefox/firefox --marionette --remote-allow-system-access about:blank
pid:1424 [1424] Sandbox: CanCreateUserNamespace() clone() failure: EPERM
0:40.25 pid:1424 1769716159835 Marionette INFO Marionette enabled
0:40.35 pid:1424 1769716159938 Marionette INFO Listening on port 50237
Failed to read: session.screen0.titlebar.left
Setting default value
Failed to read: session.screen0.titlebar.right
Setting default value
0:43.03 pid:1424 console.error: services.settings:
0:43.03 pid:1424 Message: EmptyDatabaseError: "main/nimbus-desktop-experiments" has not been synced yet
0:43.03 pid:1424 Stack:
0:43.03 pid:1424 EmptyDatabaseError@resource://services-settings/Database.sys.mjs:19:5
0:43.03 pid:1424 list@resource://services-settings/Database.sys.mjs:96:13
0:43.21 pid:1424 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]
0:43.43 TEST_START: /css/css-scroll-snap/scroll-margin-overflow-ancestor.html
0:44.03 TEST_END: Test OK. Subtests passed 2/4. Unexpected 2
FAIL scroll-margin is respected when overflowing an overflow: auto container - assert_equals: gives 40px margin to element slightly above inner scroller expected 960 but got 940
@http://web-platform.test:8000/css/css-scroll-snap/scroll-margin-overflow-ancestor.html:259:16
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/css/css-scroll-snap/scroll-margin-overflow-ancestor.html:218:5
FAIL scroll-margin and scroll-padding are respected when overflowing an overflow: auto container - assert_equals: gives 40px margin and 20px padding to element slightly above inner scroller expected 940 but got 920
@http://web-platform.test:8000/css/css-scroll-snap/scroll-margin-overflow-ancestor.html:309:16
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/css/css-scroll-snap/scroll-margin-overflow-ancestor.html:264:5
0:44.03 INFO No more tests
0:44.03 pid:1424 1769716163617 Marionette INFO Stopped listening on port 50237
0:44.76 INFO Browser exited with return code -15
0:44.63 INFO Closing logging queue
0:44.63 INFO queue closed
0:44.77 SUITE_END
web-platform-test
~~~~~~~~~~~~~~~~~
Ran 5 checks (4 subtests, 1 tests)
Expected results: 3
Unexpected results: 2
subtest: 2 (2 fail)
Unexpected Results
------------------
/css/css-scroll-snap/scroll-margin-overflow-ancestor.html
FAIL scroll-margin is respected when overflowing an overflow: auto container - assert_equals: gives 40px margin to element slightly above inner scroller expected 960 but got 940
@http://web-platform.test:8000/css/css-scroll-snap/scroll-margin-overflow-ancestor.html:259:16
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/css/css-scroll-snap/scroll-margin-overflow-ancestor.html:218:5
FAIL scroll-margin and scroll-padding are respected when overflowing an overflow: auto container - assert_equals: gives 40px margin and 20px padding to element slightly above inner scroller expected 940 but got 920
@http://web-platform.test:8000/css/css-scroll-snap/scroll-margin-overflow-ancestor.html:309:16
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/css/css-scroll-snap/scroll-margin-overflow-ancestor.html:264:5
0:44.77 INFO Got 1 unexpected results, with 0 unexpected passes
0:44.77 wptserve INFO Stopped http server on 127.0.0.1:8000
0:44.77 wptserve INFO Stopped http server on 127.0.0.1:8002
0:44.77 wptserve INFO Stopped http server on 127.0.0.1:8003
0:44.77 wptserve INFO Stopped http server on 127.0.0.1:8001
0:44.78 wptserve INFO Stopped http server on 127.0.0.1:8443
0:44.78 wptserve INFO Stopped http server on 127.0.0.1:8444
0:44.78 wptserve INFO Stopped http server on 127.0.0.1:8446
0:44.78 wptserve INFO Stopped http server on 127.0.0.1:8445
0:44.79 wptserve INFO Stopped http server on 127.0.0.1:9000
0:44.79 wptserve INFO Stopped WebTransport over HTTP/3 server on 127.0.0.1:11000
0:45.20 wptserve INFO Close on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8889))
0:45.21 wptserve INFO Close on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8888))
0:45.24 INFO Removed font: Ahem.ttf
0:45.27 INFO Closing logging queue
0:45.27 INFO queue closed
0:45.27 INFO Tolerating 1 unexpected results
[taskcluster 2026-01-29 19:49:26.699Z] === Task Finished ===
[taskcluster 2026-01-29 19:49:27.789Z] Successful task run with exit code: 0 completed in 107.798 seconds
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