[taskcluster 2026-01-04 11:40:05.600Z] Task ID: djnhxOo9THmFgUj84CVXnw
[taskcluster 2026-01-04 11:40:05.600Z] Worker ID: 2138476589270691719
[taskcluster 2026-01-04 11:40:05.600Z] Worker Group: us-east1-b
[taskcluster 2026-01-04 11:40:05.600Z] Worker Node Type: projects/757942385826/machineTypes/n2-standard-4
[taskcluster 2026-01-04 11:40:05.600Z] Worker Pool: proj-wpt/ci
[taskcluster 2026-01-04 11:40:05.600Z] Worker Version: 46.1.0
[taskcluster 2026-01-04 11:40:05.600Z] Public IP: 34.74.254.246
[taskcluster 2026-01-04 11:40:05.600Z] Hostname: proj-wpt-ci-kxnnatjhs96dsjlrlmjkkg

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 1:07.42 INFO Repetition 6 / 10
 1:07.42 SUITE_START: web-platform-test - running 1 tests
 1:07.42 INFO Using 1 child processes
 1:07.42 INFO Starting WebDriver: /home/test/web-platform-tests/_venv3/bin/chrome/chromedriver --port=48641 --ignore-explicit-port --url-base=/ --enable-chrome-logs --disable-build-check
 1:07.44 INFO Got WebDriver port 41623
 1:07.53 pid:2916 Full command: /home/test/web-platform-tests/_venv3/bin/chrome/chromedriver --port=48641 --ignore-explicit-port --url-base=/ --enable-chrome-logs --disable-build-check
pid:2916 Starting ChromeDriver 145.0.7572.2 (68918169e6422bcf7c8ca8cdea509443a35f96a4-refs/branch-heads/7572@{#6}) on port 0
 1:07.53 pid:2916 Only local connections are allowed.
 1:07.53 pid:2916 Please see https://chromedriver.chromium.org/security-considerations for suggestions on keeping ChromeDriver safe.
 1:07.53 pid:2916 ChromeDriver was started successfully on port 41623.
 1:07.53 INFO Webdriver started successfully.
 1:07.53 INFO Starting runner
 1:08.08 pid:2916 [2963:2963:0104/114337.604397:WARNING:ui/gfx/linux/gbm_support_x11.cc:49] dri3 extension not supported.
 1:08.08 pid:2916 [2963:2963:0104/114337.606507:WARNING:sandbox/policy/linux/sandbox_linux.cc:405] InitializeSandbox() called with multiple threads in process gpu-process.
 1:08.09 pid:2916 [1767527017.615][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.
 1:08.22 pid:2916 [2933:2933:0104/114337.744355: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
 1:08.22 pid:2916 [2933:2933:0104/114337.744372:WARNING:dbus/property.cc:174] GetAll request failed for: org.freedesktop.UPower.Device
 1:08.24 pid:2916 [2933:2933:0104/114337.765449:WARNING:ui/base/idle/idle_linux.cc:113] None of the known D-Bus ScreenSaver services could be used.
 1:08.31 TEST_START: /html/semantics/forms/the-select-element/select-listbox-selected-hscroll.html
 1:09.16 INFO Image hashes didn't match on page 1, checking pixel differences
 1:09.20 INFO Found 108 pixels different, maximum difference per channel 230 on page 1
 1:09.20 TEST_END: PASS
 1:09.20 INFO No more tests
 1:09.25 INFO Closing logging queue
 1:09.25 INFO queue closed
 1:09.32 SUITE_END

web-platform-test
~~~~~~~~~~~~~~~~~
Ran 6 checks (6 tests)
Expected results: 6
Unexpected results: 0
OK
 1:09.32 INFO Got 0 unexpected results, with 0 unexpected passes
 1:09.32 INFO Repetition 7 / 10
 1:09.32 SUITE_START: web-platform-test - running 1 tests
 1:09.32 INFO Using 1 child processes
 1:09.32 INFO Starting WebDriver: /home/test/web-platform-tests/_venv3/bin/chrome/chromedriver --port=33969 --ignore-explicit-port --url-base=/ --enable-chrome-logs --disable-build-check
 1:09.33 INFO Got WebDriver port 37209
 1:09.43 pid:3055 Full command: /home/test/web-platform-tests/_venv3/bin/chrome/chromedriver --port=33969 --ignore-explicit-port --url-base=/ --enable-chrome-logs --disable-build-check
pid:3055 Starting ChromeDriver 145.0.7572.2 (68918169e6422bcf7c8ca8cdea509443a35f96a4-refs/branch-heads/7572@{#6}) on port 0
 1:09.43 pid:3055 Only local connections are allowed.
 1:09.43 pid:3055 Please see https://chromedriver.chromium.org/security-considerations for suggestions on keeping ChromeDriver safe.
 1:09.43 pid:3055 ChromeDriver was started successfully on port 37209.
 1:09.43 INFO Webdriver started successfully.
 1:09.43 INFO Starting runner
 1:09.98 pid:3055 [1767527019.504][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.
 1:09.98 pid:3055 [3103:3103:0104/114339.505419:WARNING:ui/gfx/linux/gbm_support_x11.cc:49] dri3 extension not supported.
 1:09.99 pid:3055 [3103:3103:0104/114339.509676:WARNING:sandbox/policy/linux/sandbox_linux.cc:405] InitializeSandbox() called with multiple threads in process gpu-process.
 1:10.12 pid:3055 [3072:3072:0104/114339.638865: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
 1:10.12 pid:3055 [3072:3072:0104/114339.638885:WARNING:dbus/property.cc:174] GetAll request failed for: org.freedesktop.UPower.Device
 1:10.14 pid:3055 [3072:3072:0104/114339.665515:WARNING:ui/base/idle/idle_linux.cc:113] None of the known D-Bus ScreenSaver services could be used.
 1:10.22 TEST_START: /html/semantics/forms/the-select-element/select-listbox-selected-hscroll.html
 1:11.07 INFO Image hashes didn't match on page 1, checking pixel differences
 1:11.12 INFO Found 108 pixels different, maximum difference per channel 230 on page 1
 1:11.12 TEST_END: PASS
 1:11.12 INFO No more tests
 1:11.17 INFO Closing logging queue
 1:11.17 INFO queue closed
 1:11.23 SUITE_END

web-platform-test
~~~~~~~~~~~~~~~~~
Ran 7 checks (7 tests)
Expected results: 7
Unexpected results: 0
OK
 1:11.23 INFO Got 0 unexpected results, with 0 unexpected passes
 1:11.23 INFO Repetition 8 / 10
 1:11.23 SUITE_START: web-platform-test - running 1 tests
 1:11.23 INFO Using 1 child processes
 1:11.23 INFO Starting WebDriver: /home/test/web-platform-tests/_venv3/bin/chrome/chromedriver --port=39931 --ignore-explicit-port --url-base=/ --enable-chrome-logs --disable-build-check
 1:11.25 INFO Got WebDriver port 35477
 1:11.34 pid:3194 Full command: /home/test/web-platform-tests/_venv3/bin/chrome/chromedriver --port=39931 --ignore-explicit-port --url-base=/ --enable-chrome-logs --disable-build-check
pid:3194 Starting ChromeDriver 145.0.7572.2 (68918169e6422bcf7c8ca8cdea509443a35f96a4-refs/branch-heads/7572@{#6}) on port 0
 1:11.34 pid:3194 Only local connections are allowed.
 1:11.34 pid:3194 Please see https://chromedriver.chromium.org/security-considerations for suggestions on keeping ChromeDriver safe.
 1:11.34 pid:3194 ChromeDriver was started successfully on port 35477.
 1:11.34 INFO Webdriver started successfully.
 1:11.34 INFO Starting runner
 1:11.87 pid:3194 [1767527021.390][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.
 1:11.90 pid:3194 [3243:3243:0104/114341.420461:WARNING:ui/gfx/linux/gbm_support_x11.cc:49] dri3 extension not supported.
 1:11.90 pid:3194 [3243:3243:0104/114341.423520:WARNING:sandbox/policy/linux/sandbox_linux.cc:405] InitializeSandbox() called with multiple threads in process gpu-process.
 1:12.00 pid:3194 [3211:3211:0104/114341.516541: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
 1:12.00 pid:3194 [3211:3211:0104/114341.516560:WARNING:dbus/property.cc:174] GetAll request failed for: org.freedesktop.UPower.Device
 1:12.03 pid:3194 [3211:3211:0104/114341.550377:WARNING:ui/base/idle/idle_linux.cc:113] None of the known D-Bus ScreenSaver services could be used.
 1:12.10 TEST_START: /html/semantics/forms/the-select-element/select-listbox-selected-hscroll.html
 1:12.91 INFO Image hashes didn't match on page 1, checking pixel differences
 1:12.95 INFO Found 108 pixels different, maximum difference per channel 230 on page 1
 1:12.95 TEST_END: PASS
 1:12.95 INFO No more tests
 1:13.01 INFO Closing logging queue
 1:13.01 INFO queue closed
 1:13.07 SUITE_END

web-platform-test
~~~~~~~~~~~~~~~~~
Ran 8 checks (8 tests)
Expected results: 8
Unexpected results: 0
OK
 1:13.07 INFO Got 0 unexpected results, with 0 unexpected passes
 1:13.07 INFO Repetition 9 / 10
 1:13.07 SUITE_START: web-platform-test - running 1 tests
 1:13.07 INFO Using 1 child processes
 1:13.08 INFO Starting WebDriver: /home/test/web-platform-tests/_venv3/bin/chrome/chromedriver --port=34441 --ignore-explicit-port --url-base=/ --enable-chrome-logs --disable-build-check
 1:13.09 INFO Got WebDriver port 45953
 1:13.18 pid:3334 Full command: /home/test/web-platform-tests/_venv3/bin/chrome/chromedriver --port=34441 --ignore-explicit-port --url-base=/ --enable-chrome-logs --disable-build-check
pid:3334 Starting ChromeDriver 145.0.7572.2 (68918169e6422bcf7c8ca8cdea509443a35f96a4-refs/branch-heads/7572@{#6}) on port 0
 1:13.18 pid:3334 Only local connections are allowed.
 1:13.18 pid:3334 Please see https://chromedriver.chromium.org/security-considerations for suggestions on keeping ChromeDriver safe.
 1:13.18 pid:3334 ChromeDriver was started successfully on port 45953.
 1:13.18 INFO Webdriver started successfully.
 1:13.18 INFO Starting runner
 1:13.73 pid:3334 [1767527023.251][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.
 1:13.75 pid:3334 [3382:3382:0104/114343.266177:WARNING:ui/gfx/linux/gbm_support_x11.cc:49] dri3 extension not supported.
 1:13.75 pid:3334 [3382:3382:0104/114343.270351:WARNING:sandbox/policy/linux/sandbox_linux.cc:405] InitializeSandbox() called with multiple threads in process gpu-process.
 1:13.87 pid:3334 [3351:3351:0104/114343.391926: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
 1:13.87 pid:3334 [3351:3351:0104/114343.391939:WARNING:dbus/property.cc:174] GetAll request failed for: org.freedesktop.UPower.Device
 1:13.90 pid:3334 [3351:3351:0104/114343.417811:WARNING:ui/base/idle/idle_linux.cc:113] None of the known D-Bus ScreenSaver services could be used.
 1:13.97 TEST_START: /html/semantics/forms/the-select-element/select-listbox-selected-hscroll.html
 1:14.80 INFO Image hashes didn't match on page 1, checking pixel differences
 1:14.84 INFO Found 108 pixels different, maximum difference per channel 230 on page 1
 1:14.84 TEST_END: PASS
 1:14.84 INFO No more tests
 1:14.89 INFO Closing logging queue
 1:14.89 INFO queue closed
 1:14.96 SUITE_END

web-platform-test
~~~~~~~~~~~~~~~~~
Ran 9 checks (9 tests)
Expected results: 9
Unexpected results: 0
OK
 1:14.96 INFO Got 0 unexpected results, with 0 unexpected passes
 1:14.96 INFO Repetition 10 / 10
 1:14.96 SUITE_START: web-platform-test - running 1 tests
 1:14.96 INFO Using 1 child processes
 1:15.13 INFO Starting WebDriver: /home/test/web-platform-tests/_venv3/bin/chrome/chromedriver --port=47625 --ignore-explicit-port --url-base=/ --enable-chrome-logs --disable-build-check
 1:15.14 INFO Got WebDriver port 40715
 1:15.24 pid:3472 Full command: /home/test/web-platform-tests/_venv3/bin/chrome/chromedriver --port=47625 --ignore-explicit-port --url-base=/ --enable-chrome-logs --disable-build-check
pid:3472 Starting ChromeDriver 145.0.7572.2 (68918169e6422bcf7c8ca8cdea509443a35f96a4-refs/branch-heads/7572@{#6}) on port 0
 1:15.24 pid:3472 Only local connections are allowed.
 1:15.24 pid:3472 Please see https://chromedriver.chromium.org/security-considerations for suggestions on keeping ChromeDriver safe.
 1:15.24 pid:3472 ChromeDriver was started successfully on port 40715.
 1:15.24 INFO Webdriver started successfully.
 1:15.24 INFO Starting runner
 1:15.79 pid:3472 [1767527025.306][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.
 1:15.79 pid:3472 [3519:3519:0104/114345.311913:WARNING:ui/gfx/linux/gbm_support_x11.cc:49] dri3 extension not supported.
 1:15.79 pid:3472 [3519:3519:0104/114345.314554:WARNING:sandbox/policy/linux/sandbox_linux.cc:405] InitializeSandbox() called with multiple threads in process gpu-process.
 1:15.90 pid:3472 [3489:3489:0104/114345.423578: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
 1:15.90 pid:3472 [3489:3489:0104/114345.423841:WARNING:dbus/property.cc:174] GetAll request failed for: org.freedesktop.UPower.Device
 1:15.92 pid:3472 [3489:3489:0104/114345.442781:WARNING:ui/base/idle/idle_linux.cc:113] None of the known D-Bus ScreenSaver services could be used.
 1:16.00 TEST_START: /html/semantics/forms/the-select-element/select-listbox-selected-hscroll.html
 1:16.87 INFO Image hashes didn't match on page 1, checking pixel differences
 1:16.92 INFO Found 108 pixels different, maximum difference per channel 230 on page 1
 1:16.92 TEST_END: PASS
 1:16.92 INFO No more tests
 1:16.97 INFO Closing logging queue
 1:16.97 INFO queue closed
 1:17.03 SUITE_END

web-platform-test
~~~~~~~~~~~~~~~~~
Ran 10 checks (10 tests)
Expected results: 10
Unexpected results: 0
OK
 1:17.03 INFO Got 0 unexpected results, with 0 unexpected passes
 1:17.03 wptserve INFO Stopped http server on 127.0.0.1:8000
 1:17.03 wptserve INFO Stopped http server on 127.0.0.1:8001
 1:17.04 wptserve INFO Stopped http server on 127.0.0.1:8002
 1:17.05 wptserve INFO Stopped http server on 127.0.0.1:8003
 1:17.05 wptserve INFO Stopped http server on 127.0.0.1:8443
 1:17.05 wptserve INFO Stopped http server on 127.0.0.1:8446
 1:17.05 wptserve INFO Stopped http server on 127.0.0.1:8445
 1:17.05 wptserve INFO Stopped http server on 127.0.0.1:8444
 1:17.06 wptserve INFO Stopped http server on 127.0.0.1:9000
 1:17.06 wptserve INFO Stopped WebTransport over HTTP/3 server on 127.0.0.1:11000
 1:17.31 wptserve INFO Close on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8889))
 1:17.31 wptserve INFO Close on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8888))
 1:17.36 INFO Removed font: Ahem.ttf
 1:17.38 INFO Closing logging queue
 1:17.38 INFO queue closed
 1:17.39 INFO ::: Ran 10 of expected 10 iterations.
 1:17.39 INFO ## All results ##

 1:17.39 INFO ### /html/semantics/forms/the-select-element/select-listbox-selected-hscroll.html ###
 1:17.39 INFO | Subtest | Results | Messages |
 1:17.39 INFO |---------|---------|----------|
 1:17.39 INFO |         | PASS    |          |
 1:17.39 INFO 
 1:17.39 INFO ::: Running tests in a loop with restarts 10 times : PASS
 1:17.39 INFO :::
 1:17.39 INFO ::: Test verification PASS
 1:17.39 INFO :::
[taskcluster 2026-01-04 11:43:51.458Z] === Task Finished ===
[taskcluster 2026-01-04 11:43:51.853Z] Successful task run with exit code: 0 completed in 226.255 seconds