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[Gecko Bug 2008625] Don't unconditionally fall back to single inserts for ::first-letter. #57068

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Merged
moz-wptsync-bot merged 1 commit into from
Jan 9, 2026

Don't unconditionally fall back to single inserts for ::first-letter.

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Merged

[Gecko Bug 2008625] Don't unconditionally fall back to single inserts for ::first-letter. #57068

Don't unconditionally fall back to single inserts for ::first-letter.
8c1ea09
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Community-TC Integration / wpt-chrome-dev-stability succeeded Jan 8, 2026 in 25m 3s

Community-TC (pull_request)

Verify that all tests affected by a pull request are stable when executed in chrome.

Details

View task in Taskcluster | View logs in Taskcluster | View task group in Taskcluster

Task Status

Started: 2026-01-08T09:11:59.655Z
Resolved: 2026-01-08T09:13:58.235Z
Task Execution Time: 1 minute, 58 seconds, 580 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=dev --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 --enable-swiftshader --install-browser --install-webdriver chrome

[taskcluster 2026-01-08 09:11:59.736Z] Task ID: Q9ci0wJgTRm5-J0Im_WSSw
[taskcluster 2026-01-08 09:11:59.736Z] Worker ID: 3890343897623416946
[taskcluster 2026-01-08 09:11:59.736Z] Worker Group: us-east4-c
[taskcluster 2026-01-08 09:11:59.736Z] Worker Node Type: projects/757942385826/machineTypes/n2-standard-4
[taskcluster 2026-01-08 09:11:59.736Z] Worker Pool: proj-wpt/ci
[taskcluster 2026-01-08 09:11:59.736Z] Worker Version: 46.1.0
[taskcluster 2026-01-08 09:11:59.736Z] Public IP: 34.11.92.170
[taskcluster 2026-01-08 09:11:59.736Z] Hostname: proj-wpt-ci-fvutyrictdkrzw8tdtpcsg

[taskcluster 2026-01-08 09:12:00.648Z] === 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

...(669 lines hidden)...

 0:28.33 INFO queue closed
 0:28.40 SUITE_END

web-platform-test
~~~~~~~~~~~~~~~~~
Ran 5 checks (5 tests)
Expected results: 5
Unexpected results: 0
OK
 0:28.40 INFO Got 0 unexpected results, with 0 unexpected passes
 0:28.40 INFO Repetition 6 / 10
 0:28.40 SUITE_START: web-platform-test - running 1 tests
 0:28.40 INFO Using 1 child processes
 0:28.40 INFO Starting WebDriver: /home/test/web-platform-tests/_venv3/bin/chrome/chromedriver --port=36765 --ignore-explicit-port --url-base=/ --enable-chrome-logs --disable-build-check
 0:28.42 INFO Got WebDriver port 42763
 0:28.51 pid:2895 Full command: /home/test/web-platform-tests/_venv3/bin/chrome/chromedriver --port=36765 --ignore-explicit-port --url-base=/ --enable-chrome-logs --disable-build-check
pid:2895 Starting ChromeDriver 145.0.7572.2 (68918169e6422bcf7c8ca8cdea509443a35f96a4-refs/branch-heads/7572@{#6}) on port 0
 0:28.51 pid:2895 Only local connections are allowed.
 0:28.51 pid:2895 Please see https://chromedriver.chromium.org/security-considerations for suggestions on keeping ChromeDriver safe.
 0:28.51 pid:2895 ChromeDriver was started successfully on port 42763.
 0:28.52 INFO Webdriver started successfully.
 0:28.52 INFO Starting runner
 0:29.05 pid:2895 [1767863628.346][WARNING]: You are using an unsupported command-line switch: --disable-build-check. Please don't report bugs that cannot be reproduced with this switch removed.
 0:29.09 pid:2895 [2942:2942:0108/091348.385858:WARNING:ui/gfx/linux/gbm_support_x11.cc:49] dri3 extension not supported.
 0:29.09 pid:2895 [2942:2942:0108/091348.387866:WARNING:sandbox/policy/linux/sandbox_linux.cc:405] InitializeSandbox() called with multiple threads in process gpu-process.
 0:29.19 pid:2895 [2912:2912:0108/091348.486222:ERROR:dbus/object_proxy.cc:573] Failed to call method: org.freedesktop.DBus.Properties.GetAll: object_path= /org/freedesktop/UPower/devices/DisplayDevice: org.freedesktop.DBus.Error.ServiceUnknown: The name org.freedesktop.UPower was not provided by any .service files
 0:29.19 pid:2895 [2912:2912:0108/091348.486429:WARNING:dbus/property.cc:174] GetAll request failed for: org.freedesktop.UPower.Device
 0:29.22 pid:2895 [2912:2912:0108/091348.523537:WARNING:ui/base/idle/idle_linux.cc:113] None of the known D-Bus ScreenSaver services could be used.
 0:29.30 TEST_START: /css/css-multicol/crashtests/first-letter-column-span-fieldset.html
 0:29.66 TEST_END: PASS
 0:29.66 INFO No more tests
 0:29.71 INFO Closing logging queue
 0:29.71 INFO queue closed
 0:29.77 SUITE_END

web-platform-test
~~~~~~~~~~~~~~~~~
Ran 6 checks (6 tests)
Expected results: 6
Unexpected results: 0
OK
 0:29.77 INFO Got 0 unexpected results, with 0 unexpected passes
 0:29.77 INFO Repetition 7 / 10
 0:29.77 SUITE_START: web-platform-test - running 1 tests
 0:29.77 INFO Using 1 child processes
 0:29.78 INFO Starting WebDriver: /home/test/web-platform-tests/_venv3/bin/chrome/chromedriver --port=52689 --ignore-explicit-port --url-base=/ --enable-chrome-logs --disable-build-check
 0:29.80 INFO Got WebDriver port 43561
 0:29.89 pid:3031 Full command: /home/test/web-platform-tests/_venv3/bin/chrome/chromedriver --port=52689 --ignore-explicit-port --url-base=/ --enable-chrome-logs --disable-build-check
pid:3031 Starting ChromeDriver 145.0.7572.2 (68918169e6422bcf7c8ca8cdea509443a35f96a4-refs/branch-heads/7572@{#6}) on port 0
 0:29.89 pid:3031 Only local connections are allowed.
 0:29.89 pid:3031 Please see https://chromedriver.chromium.org/security-considerations for suggestions on keeping ChromeDriver safe.
 0:29.89 pid:3031 ChromeDriver was started successfully on port 43561.
 0:29.89 INFO Webdriver started successfully.
 0:29.89 INFO Starting runner
 0:30.45 pid:3031 [1767863629.746][WARNING]: You are using an unsupported command-line switch: --disable-build-check. Please don't report bugs that cannot be reproduced with this switch removed.
 0:30.45 pid:3031 [3079:3079:0108/091349.754111:WARNING:ui/gfx/linux/gbm_support_x11.cc:49] dri3 extension not supported.
 0:30.46 pid:3031 [3079:3079:0108/091349.758215:WARNING:sandbox/policy/linux/sandbox_linux.cc:405] InitializeSandbox() called with multiple threads in process gpu-process.
 0:30.57 pid:3031 [3048:3048:0108/091349.870780:ERROR:dbus/object_proxy.cc:573] Failed to call method: org.freedesktop.DBus.Properties.GetAll: object_path= /org/freedesktop/UPower/devices/DisplayDevice: org.freedesktop.DBus.Error.ServiceUnknown: The name org.freedesktop.UPower was not provided by any .service files
 0:30.57 pid:3031 [3048:3048:0108/091349.870800:WARNING:dbus/property.cc:174] GetAll request failed for: org.freedesktop.UPower.Device
 0:30.59 pid:3031 [3048:3048:0108/091349.893121:WARNING:ui/base/idle/idle_linux.cc:113] None of the known D-Bus ScreenSaver services could be used.
 0:30.67 TEST_START: /css/css-multicol/crashtests/first-letter-column-span-fieldset.html
 0:31.03 TEST_END: PASS
 0:31.03 INFO No more tests
 0:31.09 INFO Closing logging queue
 0:31.09 INFO queue closed
 0:31.14 SUITE_END

web-platform-test
~~~~~~~~~~~~~~~~~
Ran 7 checks (7 tests)
Expected results: 7
Unexpected results: 0
OK
 0:31.14 INFO Got 0 unexpected results, with 0 unexpected passes
 0:31.14 INFO Repetition 8 / 10
 0:31.14 SUITE_START: web-platform-test - running 1 tests
 0:31.14 INFO Using 1 child processes
 0:31.15 INFO Starting WebDriver: /home/test/web-platform-tests/_venv3/bin/chrome/chromedriver --port=52029 --ignore-explicit-port --url-base=/ --enable-chrome-logs --disable-build-check
 0:31.16 INFO Got WebDriver port 36551
 0:31.26 pid:3166 Full command: /home/test/web-platform-tests/_venv3/bin/chrome/chromedriver --port=52029 --ignore-explicit-port --url-base=/ --enable-chrome-logs --disable-build-check
pid:3166 Starting ChromeDriver 145.0.7572.2 (68918169e6422bcf7c8ca8cdea509443a35f96a4-refs/branch-heads/7572@{#6}) on port 0
 0:31.26 pid:3166 Only local connections are allowed.
 0:31.26 pid:3166 Please see https://chromedriver.chromium.org/security-considerations for suggestions on keeping ChromeDriver safe.
 0:31.26 pid:3166 ChromeDriver was started successfully on port 36551.
 0:31.26 INFO Webdriver started successfully.
 0:31.26 INFO Starting runner
 0:31.79 pid:3166 [3183:3183:0108/091351.086506:ERROR:dbus/object_proxy.cc:573] Failed to call method: org.freedesktop.DBus.Properties.GetAll: object_path= /org/freedesktop/UPower/devices/DisplayDevice: org.freedesktop.DBus.Error.ServiceUnknown: The name org.freedesktop.UPower was not provided by any .service files
 0:31.79 pid:3166 [3183:3183:0108/091351.086525:WARNING:dbus/property.cc:174] GetAll request failed for: org.freedesktop.UPower.Device
 0:31.79 pid:3166 [1767863631.090][WARNING]: You are using an unsupported command-line switch: --disable-build-check. Please don't report bugs that cannot be reproduced with this switch removed.
 0:31.82 pid:3166 [3213:3213:0108/091351.118058:WARNING:ui/gfx/linux/gbm_support_x11.cc:49] dri3 extension not supported.
 0:31.82 pid:3166 [3213:3213:0108/091351.120631:WARNING:sandbox/policy/linux/sandbox_linux.cc:405] InitializeSandbox() called with multiple threads in process gpu-process.
 0:31.93 pid:3166 [3183:3183:0108/091351.232178:WARNING:ui/base/idle/idle_linux.cc:113] None of the known D-Bus ScreenSaver services could be used.
 0:32.01 TEST_START: /css/css-multicol/crashtests/first-letter-column-span-fieldset.html
 0:32.37 TEST_END: PASS
 0:32.37 INFO No more tests
 0:32.42 INFO Closing logging queue
 0:32.42 INFO queue closed
 0:32.48 SUITE_END

web-platform-test
~~~~~~~~~~~~~~~~~
Ran 8 checks (8 tests)
Expected results: 8
Unexpected results: 0
OK
 0:32.48 INFO Got 0 unexpected results, with 0 unexpected passes
 0:32.48 INFO Repetition 9 / 10
 0:32.48 SUITE_START: web-platform-test - running 1 tests
 0:32.48 INFO Using 1 child processes
 0:32.48 INFO Starting WebDriver: /home/test/web-platform-tests/_venv3/bin/chrome/chromedriver --port=40327 --ignore-explicit-port --url-base=/ --enable-chrome-logs --disable-build-check
 0:32.50 INFO Got WebDriver port 34077
 0:32.60 pid:3306 Full command: /home/test/web-platform-tests/_venv3/bin/chrome/chromedriver --port=40327 --ignore-explicit-port --url-base=/ --enable-chrome-logs --disable-build-check
pid:3306 Starting ChromeDriver 145.0.7572.2 (68918169e6422bcf7c8ca8cdea509443a35f96a4-refs/branch-heads/7572@{#6}) on port 0
 0:32.60 pid:3306 Only local connections are allowed.
 0:32.60 pid:3306 Please see https://chromedriver.chromium.org/security-considerations for suggestions on keeping ChromeDriver safe.
 0:32.60 pid:3306 ChromeDriver was started successfully on port 34077.
 0:32.60 INFO Webdriver started successfully.
 0:32.60 INFO Starting runner
 0:33.15 pid:3306 [1767863632.452][WARNING]: You are using an unsupported command-line switch: --disable-build-check. Please don't report bugs that cannot be reproduced with this switch removed.
 0:33.16 pid:3306 [3354:3354:0108/091352.456487:WARNING:ui/gfx/linux/gbm_support_x11.cc:49] dri3 extension not supported.
 0:33.16 pid:3306 [3354:3354:0108/091352.459244:WARNING:sandbox/policy/linux/sandbox_linux.cc:405] InitializeSandbox() called with multiple threads in process gpu-process.
 0:33.28 pid:3306 [3323:3323:0108/091352.576991:ERROR:dbus/object_proxy.cc:573] Failed to call method: org.freedesktop.DBus.Properties.GetAll: object_path= /org/freedesktop/UPower/devices/DisplayDevice: org.freedesktop.DBus.Error.ServiceUnknown: The name org.freedesktop.UPower was not provided by any .service files
 0:33.28 pid:3306 [3323:3323:0108/091352.577009:WARNING:dbus/property.cc:174] GetAll request failed for: org.freedesktop.UPower.Device
 0:33.30 pid:3306 [3323:3323:0108/091352.602152:WARNING:ui/base/idle/idle_linux.cc:113] None of the known D-Bus ScreenSaver services could be used.
 0:33.38 TEST_START: /css/css-multicol/crashtests/first-letter-column-span-fieldset.html
 0:33.73 TEST_END: PASS
 0:33.73 INFO No more tests
 0:33.78 INFO Closing logging queue
 0:33.78 INFO queue closed
 0:33.84 SUITE_END

web-platform-test
~~~~~~~~~~~~~~~~~
Ran 9 checks (9 tests)
Expected results: 9
Unexpected results: 0
OK
 0:33.84 INFO Got 0 unexpected results, with 0 unexpected passes
 0:33.84 INFO Repetition 10 / 10
 0:33.84 SUITE_START: web-platform-test - running 1 tests
 0:33.84 INFO Using 1 child processes
 0:33.84 INFO Starting WebDriver: /home/test/web-platform-tests/_venv3/bin/chrome/chromedriver --port=58557 --ignore-explicit-port --url-base=/ --enable-chrome-logs --disable-build-check
 0:33.86 INFO Got WebDriver port 46845
 0:33.96 pid:3442 Full command: /home/test/web-platform-tests/_venv3/bin/chrome/chromedriver --port=58557 --ignore-explicit-port --url-base=/ --enable-chrome-logs --disable-build-check
pid:3442 Starting ChromeDriver 145.0.7572.2 (68918169e6422bcf7c8ca8cdea509443a35f96a4-refs/branch-heads/7572@{#6}) on port 0
 0:33.96 pid:3442 Only local connections are allowed.
 0:33.96 pid:3442 Please see https://chromedriver.chromium.org/security-considerations for suggestions on keeping ChromeDriver safe.
 0:33.96 pid:3442 ChromeDriver was started successfully on port 46845.
 0:33.96 INFO Webdriver started successfully.
 0:33.96 INFO Starting runner
 0:34.48 pid:3442 [1767863633.782][WARNING]: You are using an unsupported command-line switch: --disable-build-check. Please don't report bugs that cannot be reproduced with this switch removed.
 0:34.48 pid:3442 [3459:3459:0108/091353.784068:ERROR:dbus/object_proxy.cc:573] Failed to call method: org.freedesktop.DBus.Properties.GetAll: object_path= /org/freedesktop/UPower/devices/DisplayDevice: org.freedesktop.DBus.Error.ServiceUnknown: The name org.freedesktop.UPower was not provided by any .service files
 0:34.48 pid:3442 [3459:3459:0108/091353.784092:WARNING:dbus/property.cc:174] GetAll request failed for: org.freedesktop.UPower.Device
 0:34.53 pid:3442 [3489:3489:0108/091353.826635:WARNING:ui/gfx/linux/gbm_support_x11.cc:49] dri3 extension not supported.
 0:34.53 pid:3442 [3489:3489:0108/091353.829356:WARNING:sandbox/policy/linux/sandbox_linux.cc:405] InitializeSandbox() called with multiple threads in process gpu-process.
 0:34.64 pid:3442 [3459:3459:0108/091353.944420:WARNING:ui/base/idle/idle_linux.cc:113] None of the known D-Bus ScreenSaver services could be used.
 0:34.72 TEST_START: /css/css-multicol/crashtests/first-letter-column-span-fieldset.html
 0:35.09 TEST_END: PASS
 0:35.09 INFO No more tests
 0:35.14 INFO Closing logging queue
 0:35.14 INFO queue closed
 0:35.20 SUITE_END

web-platform-test
~~~~~~~~~~~~~~~~~
Ran 10 checks (10 tests)
Expected results: 10
Unexpected results: 0
OK
 0:35.20 INFO Got 0 unexpected results, with 0 unexpected passes
 0:35.20 wptserve INFO Stopped http server on 127.0.0.1:8000
 0:35.20 wptserve INFO Stopped http server on 127.0.0.1:8001
 0:35.20 wptserve INFO Stopped http server on 127.0.0.1:8002
 0:35.22 wptserve INFO Stopped http server on 127.0.0.1:8003
 0:35.22 wptserve INFO Stopped http server on 127.0.0.1:8444
 0:35.22 wptserve INFO Stopped http server on 127.0.0.1:8443
 0:35.22 wptserve INFO Stopped http server on 127.0.0.1:8445
 0:35.22 wptserve INFO Stopped http server on 127.0.0.1:8446
 0:35.22 wptserve INFO Stopped http server on 127.0.0.1:9000
 0:35.22 wptserve INFO Stopped WebTransport over HTTP/3 server on 127.0.0.1:11000
 0:35.50 wptserve INFO Close on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8888))
 0:35.51 wptserve INFO Close on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8889))
 0:35.54 INFO Removed font: Ahem.ttf
 0:35.57 INFO Closing logging queue
 0:35.57 INFO queue closed
 0:35.57 INFO ::: Ran 10 of expected 10 iterations.
 0:35.57 INFO ## All results ##

 0:35.57 INFO ### /css/css-multicol/crashtests/first-letter-column-span-fieldset.html ###
 0:35.57 INFO | Subtest | Results | Messages |
 0:35.57 INFO |---------|---------|----------|
 0:35.57 INFO |         | PASS    |          |
 0:35.57 INFO 
 0:35.57 INFO ::: Running tests in a loop with restarts 10 times : PASS
 0:35.57 INFO :::
 0:35.57 INFO ::: Test verification PASS
 0:35.57 INFO :::
[taskcluster 2026-01-08 09:13:56.549Z] === Task Finished ===
[taskcluster 2026-01-08 09:13:56.904Z] Successful task run with exit code: 0 completed in 117.168 seconds
View more details on Community-TC Integration