[taskcluster 2026-01-05 18:06:02.760Z] Task ID: Xo_xEoXZQqyftAVyPCPkGA
[taskcluster 2026-01-05 18:06:02.760Z] Worker ID: 2214087723285106969
[taskcluster 2026-01-05 18:06:02.760Z] Worker Group: us-central1-b
[taskcluster 2026-01-05 18:06:02.760Z] Worker Node Type: projects/757942385826/machineTypes/n2-standard-4
[taskcluster 2026-01-05 18:06:02.760Z] Worker Pool: proj-wpt/ci
[taskcluster 2026-01-05 18:06:02.760Z] Worker Version: 46.1.0
[taskcluster 2026-01-05 18:06:02.760Z] Public IP: 34.55.5.121
[taskcluster 2026-01-05 18:06:02.760Z] Hostname: proj-wpt-ci-f4nxciggsqk0mbowwm7jpq

[taskcluster 2026-01-05 18:06:03.693Z] === 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)...

 0:35.97 SUITE_END

web-platform-test
~~~~~~~~~~~~~~~~~
Ran 5 checks (5 tests)
Expected results: 5
Unexpected results: 0
OK
 0:35.97 INFO Got 0 unexpected results, with 0 unexpected passes
 0:35.97 INFO Repetition 6 / 10
 0:35.97 SUITE_START: web-platform-test - running 1 tests
 0:35.97 INFO Using 1 child processes
 0:35.97 INFO Starting WebDriver: /home/test/web-platform-tests/_venv3/bin/chrome/chromedriver --port=45109 --ignore-explicit-port --url-base=/ --enable-chrome-logs --disable-build-check
 0:35.99 INFO Got WebDriver port 43683
 0:36.09 pid:2910 Full command: /home/test/web-platform-tests/_venv3/bin/chrome/chromedriver --port=45109 --ignore-explicit-port --url-base=/ --enable-chrome-logs --disable-build-check
pid:2910 Starting ChromeDriver 145.0.7572.2 (68918169e6422bcf7c8ca8cdea509443a35f96a4-refs/branch-heads/7572@{#6}) on port 0
 0:36.09 pid:2910 Only local connections are allowed.
 0:36.09 pid:2910 Please see https://chromedriver.chromium.org/security-considerations for suggestions on keeping ChromeDriver safe.
 0:36.09 pid:2910 ChromeDriver was started successfully on port 43683.
 0:36.09 INFO Webdriver started successfully.
 0:36.09 INFO Starting runner
 0:36.75 pid:2910 [1767636656.280][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.
 0:36.77 pid:2910 [2958:2958:0105/181056.303148:WARNING:ui/gfx/linux/gbm_support_x11.cc:49] dri3 extension not supported.
 0:36.78 pid:2910 [2958:2958:0105/181056.306805:WARNING:sandbox/policy/linux/sandbox_linux.cc:405] InitializeSandbox() called with multiple threads in process gpu-process.
 0:36.91 pid:2910 [2927:2927:0105/181056.443230: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
 0:36.91 pid:2910 [2927:2927:0105/181056.443276:WARNING:dbus/property.cc:174] GetAll request failed for: org.freedesktop.UPower.Device
 0:36.94 pid:2910 [2927:2927:0105/181056.471331:WARNING:ui/base/idle/idle_linux.cc:113] None of the known D-Bus ScreenSaver services could be used.
 0:37.05 TEST_START: /css/css-anchor-position/position-area-justify-self-safe-001.html
 0:38.01 TEST_END: PASS
 0:38.01 INFO No more tests
 0:38.07 INFO Closing logging queue
 0:38.07 INFO queue closed
 0:38.14 SUITE_END

web-platform-test
~~~~~~~~~~~~~~~~~
Ran 6 checks (6 tests)
Expected results: 6
Unexpected results: 0
OK
 0:38.14 INFO Got 0 unexpected results, with 0 unexpected passes
 0:38.14 INFO Repetition 7 / 10
 0:38.14 SUITE_START: web-platform-test - running 1 tests
 0:38.14 INFO Using 1 child processes
 0:38.14 INFO Starting WebDriver: /home/test/web-platform-tests/_venv3/bin/chrome/chromedriver --port=45023 --ignore-explicit-port --url-base=/ --enable-chrome-logs --disable-build-check
 0:38.16 INFO Got WebDriver port 36241
 0:38.25 pid:3048 Full command: /home/test/web-platform-tests/_venv3/bin/chrome/chromedriver --port=45023 --ignore-explicit-port --url-base=/ --enable-chrome-logs --disable-build-check
pid:3048 Starting ChromeDriver 145.0.7572.2 (68918169e6422bcf7c8ca8cdea509443a35f96a4-refs/branch-heads/7572@{#6}) on port 0
 0:38.25 pid:3048 Only local connections are allowed.
 0:38.25 pid:3048 Please see https://chromedriver.chromium.org/security-considerations for suggestions on keeping ChromeDriver safe.
 0:38.25 pid:3048 ChromeDriver was started successfully on port 36241.
 0:38.25 INFO Webdriver started successfully.
 0:38.25 INFO Starting runner
 0:38.93 pid:3048 [3096:3096:0105/181058.456782:WARNING:ui/gfx/linux/gbm_support_x11.cc:49] dri3 extension not supported.
 0:38.93 pid:3048 [3096:3096:0105/181058.459361:WARNING:sandbox/policy/linux/sandbox_linux.cc:405] InitializeSandbox() called with multiple threads in process gpu-process.
 0:39.04 pid:3048 [1767636658.573][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.
 0:39.06 pid:3048 [3065:3065:0105/181058.593181: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
 0:39.06 pid:3048 [3065:3065:0105/181058.593205:WARNING:dbus/property.cc:174] GetAll request failed for: org.freedesktop.UPower.Device
 0:39.09 pid:3048 [3065:3065:0105/181058.616832:WARNING:ui/base/idle/idle_linux.cc:113] None of the known D-Bus ScreenSaver services could be used.
 0:39.19 TEST_START: /css/css-anchor-position/position-area-justify-self-safe-001.html
 0:40.16 TEST_END: PASS
 0:40.16 INFO No more tests
 0:40.22 INFO Closing logging queue
 0:40.22 INFO queue closed
 0:40.29 SUITE_END

web-platform-test
~~~~~~~~~~~~~~~~~
Ran 7 checks (7 tests)
Expected results: 7
Unexpected results: 0
OK
 0:40.29 INFO Got 0 unexpected results, with 0 unexpected passes
 0:40.29 INFO Repetition 8 / 10
 0:40.29 SUITE_START: web-platform-test - running 1 tests
 0:40.29 INFO Using 1 child processes
 0:40.29 INFO Starting WebDriver: /home/test/web-platform-tests/_venv3/bin/chrome/chromedriver --port=53237 --ignore-explicit-port --url-base=/ --enable-chrome-logs --disable-build-check
 0:40.31 INFO Got WebDriver port 42875
 0:40.41 pid:3188 Full command: /home/test/web-platform-tests/_venv3/bin/chrome/chromedriver --port=53237 --ignore-explicit-port --url-base=/ --enable-chrome-logs --disable-build-check
pid:3188 Starting ChromeDriver 145.0.7572.2 (68918169e6422bcf7c8ca8cdea509443a35f96a4-refs/branch-heads/7572@{#6}) on port 0
 0:40.41 pid:3188 Only local connections are allowed.
 0:40.41 pid:3188 Please see https://chromedriver.chromium.org/security-considerations for suggestions on keeping ChromeDriver safe.
 0:40.41 pid:3188 ChromeDriver was started successfully on port 42875.
 0:40.41 INFO Webdriver started successfully.
 0:40.41 INFO Starting runner
 0:41.03 pid:3188 [1767636660.563][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.
 0:41.06 pid:3188 [3235:3235:0105/181100.594587:WARNING:ui/gfx/linux/gbm_support_x11.cc:49] dri3 extension not supported.
 0:41.07 pid:3188 [3235:3235:0105/181100.597724:WARNING:sandbox/policy/linux/sandbox_linux.cc:405] InitializeSandbox() called with multiple threads in process gpu-process.
 0:41.19 pid:3188 [3205:3205:0105/181100.724098: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
 0:41.19 pid:3188 [3205:3205:0105/181100.724118:WARNING:dbus/property.cc:174] GetAll request failed for: org.freedesktop.UPower.Device
 0:41.24 pid:3188 [3205:3205:0105/181100.771967:WARNING:ui/base/idle/idle_linux.cc:113] None of the known D-Bus ScreenSaver services could be used.
 0:41.33 TEST_START: /css/css-anchor-position/position-area-justify-self-safe-001.html
 0:42.28 TEST_END: PASS
 0:42.28 INFO No more tests
 0:42.34 INFO Closing logging queue
 0:42.34 INFO queue closed
 0:42.40 SUITE_END

web-platform-test
~~~~~~~~~~~~~~~~~
Ran 8 checks (8 tests)
Expected results: 8
Unexpected results: 0
OK
 0:42.40 INFO Got 0 unexpected results, with 0 unexpected passes
 0:42.40 INFO Repetition 9 / 10
 0:42.40 SUITE_START: web-platform-test - running 1 tests
 0:42.41 INFO Using 1 child processes
 0:42.41 INFO Starting WebDriver: /home/test/web-platform-tests/_venv3/bin/chrome/chromedriver --port=52405 --ignore-explicit-port --url-base=/ --enable-chrome-logs --disable-build-check
 0:42.42 INFO Got WebDriver port 34013
 0:42.52 pid:3328 Full command: /home/test/web-platform-tests/_venv3/bin/chrome/chromedriver --port=52405 --ignore-explicit-port --url-base=/ --enable-chrome-logs --disable-build-check
pid:3328 Starting ChromeDriver 145.0.7572.2 (68918169e6422bcf7c8ca8cdea509443a35f96a4-refs/branch-heads/7572@{#6}) on port 0
 0:42.52 pid:3328 Only local connections are allowed.
 0:42.52 pid:3328 Please see https://chromedriver.chromium.org/security-considerations for suggestions on keeping ChromeDriver safe.
 0:42.52 pid:3328 ChromeDriver was started successfully on port 34013.
 0:42.52 INFO Webdriver started successfully.
 0:42.52 INFO Starting runner
 0:43.16 pid:3328 [3376:3376:0105/181102.686580:WARNING:ui/gfx/linux/gbm_support_x11.cc:49] dri3 extension not supported.
 0:43.16 pid:3328 [3376:3376:0105/181102.690114:WARNING:sandbox/policy/linux/sandbox_linux.cc:405] InitializeSandbox() called with multiple threads in process gpu-process.
 0:43.18 pid:3328 [1767636662.715][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.
 0:43.34 pid:3328 [3345:3345:0105/181102.873891: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
 0:43.34 pid:3328 [3345:3345:0105/181102.873909:WARNING:dbus/property.cc:174] GetAll request failed for: org.freedesktop.UPower.Device
 0:43.37 pid:3328 [3345:3345:0105/181102.900564:WARNING:ui/base/idle/idle_linux.cc:113] None of the known D-Bus ScreenSaver services could be used.
 0:43.46 TEST_START: /css/css-anchor-position/position-area-justify-self-safe-001.html
 0:44.43 TEST_END: PASS
 0:44.43 INFO No more tests
 0:44.48 INFO Closing logging queue
 0:44.48 INFO queue closed
 0:44.55 SUITE_END

web-platform-test
~~~~~~~~~~~~~~~~~
Ran 9 checks (9 tests)
Expected results: 9
Unexpected results: 0
OK
 0:44.55 INFO Got 0 unexpected results, with 0 unexpected passes
 0:44.55 INFO Repetition 10 / 10
 0:44.55 SUITE_START: web-platform-test - running 1 tests
 0:44.56 INFO Using 1 child processes
 0:44.56 INFO Starting WebDriver: /home/test/web-platform-tests/_venv3/bin/chrome/chromedriver --port=51085 --ignore-explicit-port --url-base=/ --enable-chrome-logs --disable-build-check
 0:44.58 INFO Got WebDriver port 34081
 0:44.67 pid:3466 Full command: /home/test/web-platform-tests/_venv3/bin/chrome/chromedriver --port=51085 --ignore-explicit-port --url-base=/ --enable-chrome-logs --disable-build-check
pid:3466 Starting ChromeDriver 145.0.7572.2 (68918169e6422bcf7c8ca8cdea509443a35f96a4-refs/branch-heads/7572@{#6}) on port 0
 0:44.67 pid:3466 Only local connections are allowed.
 0:44.67 pid:3466 Please see https://chromedriver.chromium.org/security-considerations for suggestions on keeping ChromeDriver safe.
 0:44.67 pid:3466 ChromeDriver was started successfully on port 34081.
 0:44.67 INFO Webdriver started successfully.
 0:44.67 INFO Starting runner
mem avail: 14319 of 15806 MiB (90.60%), swap free:    0 of    0 MiB ( 0.00%)
 0:45.32 pid:3466 [3513:3513:0105/181104.847063:WARNING:ui/gfx/linux/gbm_support_x11.cc:49] dri3 extension not supported.
 0:45.32 pid:3466 [1767636664.850][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.
 0:45.32 pid:3466 [3513:3513:0105/181104.849997:WARNING:sandbox/policy/linux/sandbox_linux.cc:405] InitializeSandbox() called with multiple threads in process gpu-process.
 0:45.49 pid:3466 [3483:3483:0105/181105.020165: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
 0:45.49 pid:3466 [3483:3483:0105/181105.020189:WARNING:dbus/property.cc:174] GetAll request failed for: org.freedesktop.UPower.Device
 0:45.52 pid:3466 [3483:3483:0105/181105.047194:WARNING:ui/base/idle/idle_linux.cc:113] None of the known D-Bus ScreenSaver services could be used.
 0:45.61 TEST_START: /css/css-anchor-position/position-area-justify-self-safe-001.html
 0:46.59 TEST_END: PASS
 0:46.59 INFO No more tests
 0:46.64 INFO Closing logging queue
 0:46.65 INFO queue closed
 0:46.71 SUITE_END

web-platform-test
~~~~~~~~~~~~~~~~~
Ran 10 checks (10 tests)
Expected results: 10
Unexpected results: 0
OK
 0:46.71 INFO Got 0 unexpected results, with 0 unexpected passes
 0:46.72 wptserve INFO Stopped http server on 127.0.0.1:8001
 0:46.72 wptserve INFO Stopped http server on 127.0.0.1:8000
 0:46.72 wptserve INFO Stopped http server on 127.0.0.1:8002
 0:46.73 wptserve INFO Stopped http server on 127.0.0.1:8443
 0:46.74 wptserve INFO Stopped http server on 127.0.0.1:8003
 0:46.74 wptserve INFO Stopped http server on 127.0.0.1:8445
 0:46.74 wptserve INFO Stopped http server on 127.0.0.1:8446
 0:46.74 wptserve INFO Stopped http server on 127.0.0.1:9000
 0:46.75 wptserve INFO Stopped http server on 127.0.0.1:8444
 0:46.75 wptserve INFO Stopped WebTransport over HTTP/3 server on 127.0.0.1:11000
 0:46.75 wptserve INFO Close on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8888))
 0:46.75 wptserve INFO Close on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8889))
 0:46.93 INFO Removed font: Ahem.ttf
 0:46.96 INFO Closing logging queue
 0:46.96 INFO queue closed
 0:46.97 INFO ::: Ran 10 of expected 10 iterations.
 0:46.97 INFO ## All results ##

 0:46.97 INFO ### /css/css-anchor-position/position-area-justify-self-safe-001.html ###
 0:46.97 INFO | Subtest | Results | Messages |
 0:46.97 INFO |---------|---------|----------|
 0:46.97 INFO |         | PASS    |          |
 0:46.97 INFO 
 0:46.97 INFO ::: Running tests in a loop with restarts 10 times : PASS
 0:46.97 INFO :::
 0:46.97 INFO ::: Test verification PASS
 0:46.97 INFO :::
[taskcluster 2026-01-05 18:11:08.738Z] === Task Finished ===
[taskcluster 2026-01-05 18:11:09.154Z] Successful task run with exit code: 0 completed in 306.395 seconds