Fix layout of fallback img elements with max-size and flow-root #56990
Community-TC Integration / wpt-firefox-nightly-stability
succeeded
Jan 5, 2026 in 6m 48s
Community-TC (pull_request)
Verify that all tests affected by a pull request are stable when executed in firefox.
Details
View task in Taskcluster | View logs in Taskcluster | View task group in Taskcluster
Task Status
Started: 2026-01-05T17:12:32.250Z
Resolved: 2026-01-05T17:15:39.298Z
Task Execution Time: 3 minutes, 7 seconds, 48 milliseconds
Task Status: completed
Reason Resolved: completed
RunId: 0
Artifacts
- public/logs/live_backing.log
- public/logs/live.log
- public/results/checkrun.md
WPT Command: python3 ./wpt run --channel=nightly --verify --verify-no-chaos-mode --verify-repeat-loop=0 --verify-repeat-restart=10 --github-checks-text-file=/home/test/artifacts/checkrun.md --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 17:12:32.325Z] Task ID: XKxqSsi_TTeTsZ1fS17Blw
[taskcluster 2026-01-05 17:12:32.325Z] Worker ID: 8148993731852652809
[taskcluster 2026-01-05 17:12:32.325Z] Worker Group: us-central1-c
[taskcluster 2026-01-05 17:12:32.325Z] Worker Node Type: projects/757942385826/machineTypes/n2-standard-4
[taskcluster 2026-01-05 17:12:32.325Z] Worker Pool: proj-wpt/ci
[taskcluster 2026-01-05 17:12:32.325Z] Worker Version: 46.1.0
[taskcluster 2026-01-05 17:12:32.325Z] Public IP: 136.119.66.101
[taskcluster 2026-01-05 17:12:32.325Z] Hostname: proj-wpt-ci-cdxghxihsqsdodxn-s3lva
[taskcluster 2026-01-05 17:12:33.363Z] === 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
...(878 lines hidden)...
1:31.50 INFO Closing logging queue
1:31.50 INFO queue closed
1:31.69 INFO Setting up ssl
1:31.71 certutil b''
1:31.73 certutil b''
1:31.74 certutil b'\nCertificate Nickname Trust Attributes\n SSL,S/MIME,JAR/XPI\n\nweb-platform-tests CT,, \n'
1:31.74 INFO Application command: /home/test/build/firefox/firefox --marionette --remote-allow-system-access about:blank -profile /tmp/tmp5isytp0a
1:31.75 INFO Starting runner
1:31.75 pid:6271 Full command: /home/test/build/firefox/firefox --marionette --remote-allow-system-access about:blank
pid:6271 [6271] Sandbox: CanCreateUserNamespace() clone() failure: EPERM
1:32.40 pid:6271 1767633314339 Marionette INFO Marionette enabled
1:32.54 pid:6271 1767633314479 Marionette INFO Listening on port 34735
1:32.55 pid:6271 [Parent 6271, Main Thread] WARNING: Failed to create DBus proxy for org.a11y.Bus: Could not connect: Connection refused
1:32.55 pid:6271 : 'glib warning', file /builds/worker/checkouts/gecko/toolkit/xre/nsSigHandlers.cpp:201
1:32.55 pid:6271 ** (firefox-nightly:6271): WARNING **: 17:15:14.487: Failed to create DBus proxy for org.a11y.Bus: Could not connect: Connection refused
1:33.78 pid:6271 console.error: services.settings:
1:33.79 pid:6271 Message: EmptyDatabaseError: "main/nimbus-desktop-experiments" has not been synced yet
1:33.79 pid:6271 Stack:
1:33.79 pid:6271 EmptyDatabaseError@resource://services-settings/Database.sys.mjs:19:5
1:33.79 pid:6271 list@resource://services-settings/Database.sys.mjs:96:13
1:34.14 pid:6271 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]
1:34.44 TEST_START: /html/rendering/replaced-elements/images/img-fallback-baseline-alignment.html
1:35.00 TEST_END: Test OK. Subtests passed 1/1. Unexpected 0
1:35.00 INFO No more tests
1:35.00 pid:6271 1767633316936 Marionette INFO Stopped listening on port 34735
1:35.88 INFO Browser exited with return code -15
1:35.72 INFO Closing logging queue
1:35.72 INFO queue closed
1:35.89 SUITE_END
web-platform-test
~~~~~~~~~~~~~~~~~
Ran 24 checks (8 subtests, 16 tests)
Expected results: 24
Unexpected results: 0
OK
1:35.89 INFO Got 0 unexpected results, with 0 unexpected passes
1:35.89 INFO Repetition 9 / 10
1:35.89 SUITE_START: web-platform-test - running 2 tests
1:35.89 INFO Using 1 child processes
1:35.90 INFO Setting up ssl
1:35.92 certutil b''
1:35.94 certutil b''
1:35.95 certutil b'\nCertificate Nickname Trust Attributes\n SSL,S/MIME,JAR/XPI\n\nweb-platform-tests CT,, \n'
1:35.95 INFO Application command: /home/test/build/firefox/firefox --marionette --remote-allow-system-access about:blank -profile /tmp/tmpsukm9o2a
1:35.97 INFO Starting runner
1:35.97 pid:6588 Full command: /home/test/build/firefox/firefox --marionette --remote-allow-system-access about:blank
pid:6588 [6588] Sandbox: CanCreateUserNamespace() clone() failure: EPERM
1:36.63 pid:6588 1767633318569 Marionette INFO Marionette enabled
1:36.78 pid:6588 1767633318715 Marionette INFO Listening on port 34743
1:38.03 pid:6588 console.error: services.settings:
1:38.03 pid:6588 Message: EmptyDatabaseError: "main/nimbus-desktop-experiments" has not been synced yet
1:38.03 pid:6588 Stack:
1:38.04 pid:6588 EmptyDatabaseError@resource://services-settings/Database.sys.mjs:19:5
1:38.04 pid:6588 list@resource://services-settings/Database.sys.mjs:96:13
1:38.38 pid:6588 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]
1:38.54 TEST_START: /html/rendering/replaced-elements/images/image-fallback-respect-max-width.html
1:38.62 pid:6588 1767633320563 Marionette INFO Testing http://web-platform.test:8000/html/rendering/replaced-elements/images/image-fallback-respect-max-width.html == http://web-platform.test:8000/html/rendering/replaced-elements/images/image-fallback-respect-max-width-ref.html
1:38.88 pid:6588 1767633320819 Marionette INFO No differences allowed
1:38.88 TEST_END: PASS
1:38.88 INFO Restarting browser for new test group
1:38.92 pid:6588 1767633320853 Marionette INFO Stopped listening on port 34743
1:39.70 INFO Browser exited with return code -15
1:39.53 INFO Closing logging queue
1:39.53 INFO queue closed
1:39.72 INFO Setting up ssl
1:39.75 certutil b''
1:39.77 certutil b''
1:39.78 certutil b'\nCertificate Nickname Trust Attributes\n SSL,S/MIME,JAR/XPI\n\nweb-platform-tests CT,, \n'
1:39.78 INFO Application command: /home/test/build/firefox/firefox --marionette --remote-allow-system-access about:blank -profile /tmp/tmptmkzch5p
1:39.79 INFO Starting runner
1:39.80 pid:6913 Full command: /home/test/build/firefox/firefox --marionette --remote-allow-system-access about:blank
pid:6913 [6913] Sandbox: CanCreateUserNamespace() clone() failure: EPERM
1:40.48 pid:6913 1767633322421 Marionette INFO Marionette enabled
1:40.63 pid:6913 1767633322564 Marionette INFO Listening on port 47709
1:40.64 pid:6913 [Parent 6913, Main Thread] WARNING: Failed to create DBus proxy for org.a11y.Bus: Could not connect: Connection refused
1:40.64 pid:6913 : 'glib warning', file /builds/worker/checkouts/gecko/toolkit/xre/nsSigHandlers.cpp:201
1:40.64 pid:6913 ** (firefox-nightly:6913): WARNING **: 17:15:22.574: Failed to create DBus proxy for org.a11y.Bus: Could not connect: Connection refused
1:41.94 pid:6913 console.error: services.settings:
1:41.94 pid:6913 Message: EmptyDatabaseError: "main/nimbus-desktop-experiments" has not been synced yet
1:41.94 pid:6913 Stack:
1:41.94 pid:6913 EmptyDatabaseError@resource://services-settings/Database.sys.mjs:19:5
1:41.94 pid:6913 list@resource://services-settings/Database.sys.mjs:96:13
1:42.18 pid:6913 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]
1:42.47 TEST_START: /html/rendering/replaced-elements/images/img-fallback-baseline-alignment.html
1:43.00 TEST_END: Test OK. Subtests passed 1/1. Unexpected 0
1:43.00 INFO No more tests
1:43.00 pid:6913 1767633324937 Marionette INFO Stopped listening on port 47709
1:43.91 INFO Browser exited with return code -15
1:43.73 INFO Closing logging queue
1:43.74 INFO queue closed
1:43.92 SUITE_END
web-platform-test
~~~~~~~~~~~~~~~~~
Ran 27 checks (9 subtests, 18 tests)
Expected results: 27
Unexpected results: 0
OK
1:43.92 INFO Got 0 unexpected results, with 0 unexpected passes
1:43.92 INFO Repetition 10 / 10
1:43.92 SUITE_START: web-platform-test - running 2 tests
1:43.92 INFO Using 1 child processes
1:43.94 INFO Setting up ssl
1:43.96 certutil b''
1:43.99 certutil b''
1:44.00 certutil b'\nCertificate Nickname Trust Attributes\n SSL,S/MIME,JAR/XPI\n\nweb-platform-tests CT,, \n'
1:44.00 INFO Application command: /home/test/build/firefox/firefox --marionette --remote-allow-system-access about:blank -profile /tmp/tmp2ithhtjo
1:44.01 INFO Starting runner
1:44.01 pid:7233 Full command: /home/test/build/firefox/firefox --marionette --remote-allow-system-access about:blank
pid:7233 [7233] Sandbox: CanCreateUserNamespace() clone() failure: EPERM
mem avail: 14336 of 15806 MiB (90.70%), swap free: 0 of 0 MiB ( 0.00%)
1:44.68 pid:7233 1767633326620 Marionette INFO Marionette enabled
1:44.82 pid:7233 1767633326762 Marionette INFO Listening on port 53411
1:46.08 pid:7233 console.error: services.settings:
1:46.08 pid:7233 Message: EmptyDatabaseError: "main/nimbus-desktop-experiments" has not been synced yet
1:46.08 pid:7233 Stack:
1:46.08 pid:7233 EmptyDatabaseError@resource://services-settings/Database.sys.mjs:19:5
1:46.08 pid:7233 list@resource://services-settings/Database.sys.mjs:96:13
1:46.44 pid:7233 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]
1:46.61 TEST_START: /html/rendering/replaced-elements/images/image-fallback-respect-max-width.html
1:46.68 pid:7233 1767633328614 Marionette INFO Testing http://web-platform.test:8000/html/rendering/replaced-elements/images/image-fallback-respect-max-width.html == http://web-platform.test:8000/html/rendering/replaced-elements/images/image-fallback-respect-max-width-ref.html
1:46.93 pid:7233 1767633328872 Marionette INFO No differences allowed
1:46.94 TEST_END: PASS
1:46.94 INFO Restarting browser for new test group
1:46.97 pid:7233 1767633328910 Marionette INFO Stopped listening on port 53411
1:47.74 INFO Browser exited with return code -15
1:47.57 INFO Closing logging queue
1:47.57 INFO queue closed
1:47.76 INFO Setting up ssl
1:47.79 certutil b''
1:47.81 certutil b''
1:47.82 certutil b'\nCertificate Nickname Trust Attributes\n SSL,S/MIME,JAR/XPI\n\nweb-platform-tests CT,, \n'
1:47.82 INFO Application command: /home/test/build/firefox/firefox --marionette --remote-allow-system-access about:blank -profile /tmp/tmpcme_m03a
1:47.83 INFO Starting runner
1:47.84 pid:7556 Full command: /home/test/build/firefox/firefox --marionette --remote-allow-system-access about:blank
pid:7556 [7556] Sandbox: CanCreateUserNamespace() clone() failure: EPERM
1:48.50 pid:7556 1767633330439 Marionette INFO Marionette enabled
1:48.64 pid:7556 1767633330580 Marionette INFO Listening on port 37901
1:48.65 pid:7556 [Parent 7556, Main Thread] WARNING: Failed to create DBus proxy for org.a11y.Bus: Could not connect: Connection refused
1:48.65 pid:7556 : 'glib warning', file /builds/worker/checkouts/gecko/toolkit/xre/nsSigHandlers.cpp:201
1:48.65 pid:7556 ** (firefox-nightly:7556): WARNING **: 17:15:30.589: Failed to create DBus proxy for org.a11y.Bus: Could not connect: Connection refused
1:49.99 pid:7556 console.error: services.settings:
1:49.99 pid:7556 Message: EmptyDatabaseError: "main/nimbus-desktop-experiments" has not been synced yet
1:49.99 pid:7556 Stack:
1:49.99 pid:7556 EmptyDatabaseError@resource://services-settings/Database.sys.mjs:19:5
1:49.99 pid:7556 list@resource://services-settings/Database.sys.mjs:96:13
1:50.18 pid:7556 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]
1:50.45 TEST_START: /html/rendering/replaced-elements/images/img-fallback-baseline-alignment.html
1:51.02 TEST_END: Test OK. Subtests passed 1/1. Unexpected 0
1:51.02 INFO No more tests
1:51.03 pid:7556 1767633332963 Marionette INFO Stopped listening on port 37901
1:51.90 INFO Browser exited with return code -15
1:51.73 INFO Closing logging queue
1:51.74 INFO queue closed
1:51.92 SUITE_END
web-platform-test
~~~~~~~~~~~~~~~~~
Ran 30 checks (10 subtests, 20 tests)
Expected results: 30
Unexpected results: 0
OK
1:51.92 INFO Got 0 unexpected results, with 0 unexpected passes
1:51.92 wptserve INFO Stopped http server on 127.0.0.1:8000
1:51.92 wptserve INFO Stopped http server on 127.0.0.1:8001
1:51.92 wptserve INFO Stopped http server on 127.0.0.1:8002
1:51.93 wptserve INFO Stopped http server on 127.0.0.1:8003
1:51.93 wptserve INFO Stopped http server on 127.0.0.1:8446
1:51.93 wptserve INFO Stopped http server on 127.0.0.1:8445
1:51.93 wptserve INFO Stopped http server on 127.0.0.1:9000
1:51.93 wptserve INFO Stopped http server on 127.0.0.1:8443
1:51.93 wptserve INFO Stopped WebTransport over HTTP/3 server on 127.0.0.1:11000
1:51.93 wptserve INFO Stopped http server on 127.0.0.1:8444
1:51.93 wptserve INFO Close on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8889))
1:51.94 wptserve INFO Close on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8888))
1:52.18 INFO Removed font: Ahem.ttf
1:52.21 INFO Closing logging queue
1:52.21 INFO queue closed
1:52.22 INFO ::: Ran 10 of expected 10 iterations.
1:52.22 INFO ## All results ##
1:52.22 INFO ### /html/rendering/replaced-elements/images/image-fallback-respect-max-width.html ###
1:52.22 INFO | Subtest | Results | Messages |
1:52.22 INFO |---------|---------|----------|
1:52.22 INFO | | PASS | |
1:52.22 INFO
1:52.22 INFO ### /html/rendering/replaced-elements/images/img-fallback-baseline-alignment.html ###
1:52.22 INFO | Subtest | Results | Messages |
1:52.22 INFO |-------------------------------------|---------|----------|
1:52.22 INFO | | OK | |
1:52.22 INFO | `Image fallback baseline alignment` | PASS | |
1:52.22 INFO
1:52.22 INFO ::: Running tests in a loop with restarts 10 times : PASS
1:52.22 INFO :::
1:52.22 INFO ::: Test verification PASS
1:52.22 INFO :::
[taskcluster 2026-01-05 17:15:36.405Z] === Task Finished ===
[taskcluster 2026-01-05 17:15:36.828Z] Successful task run with exit code: 0 completed in 184.504 seconds
Loading