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WPT: Snapshot internal observers before Subscriber iterates over them

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WPT: Snapshot internal observers before Subscriber iterates over them #54725

WPT: Snapshot internal observers before Subscriber iterates over them
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Community-TC Integration / wpt-chrome-dev-results-without-changes succeeded Sep 5, 2025 in 4m 13s

Community-TC (pull_request)

Collect results for all tests affected by a pull request in chrome but without the changes in the PR.

Details

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

Task Status

Started: 2025-09-05T18:58:48.482Z
Resolved: 2025-09-05T19:02:04.311Z
Task Execution Time: 3 minutes, 15 seconds, 829 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=dev --no-fail-on-unexpected --log-wptreport=../artifacts/wpt_report.json --log-wptscreenshot=../artifacts/wpt_screenshot.txt --affected task_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 2025-09-05 18:58:48.585Z] Task ID: UyNRnRRBRu6zEbK2orCxCg
[taskcluster 2025-09-05 18:58:48.585Z] Worker ID: 9021370983425412178
[taskcluster 2025-09-05 18:58:48.585Z] Worker Group: us-central1-c
[taskcluster 2025-09-05 18:58:48.585Z] Worker Node Type: projects/757942385826/machineTypes/n2-standard-4
[taskcluster 2025-09-05 18:58:48.585Z] Worker Pool: proj-wpt/ci
[taskcluster 2025-09-05 18:58:48.585Z] Worker Version: 46.1.0
[taskcluster 2025-09-05 18:58:48.585Z] Public IP: 104.154.207.247
[taskcluster 2025-09-05 18:58:48.585Z] Hostname: proj-wpt-ci-la9ikmgvtduh7-dmbg73rw

ac811f28856d - Started downloading
ac811f28856d - Downloaded in 0.034 seconds
40516d781e70 - Started downloading
8f84a9f2102e - Started downloading
44ebbf800033 - Started downloading
44ebbf800033 - Downloaded in 0.045 seconds
8f84a9f2102e - Downloaded in 0.2 seconds
a8884b21e40e - Started downloading
4f4fb700ef54 - Started downloading
4f4fb700ef54 - Downloaded in 0.001 seconds
79c347416ee8 - Started downloading

...(415 lines hidden)...

Setting default value
Failed to read: session.screen0.maxIgnoreIncrement
Setting default value
Failed to read: session.screen0.maxDisableMove
Setting default value
Failed to read: session.screen0.maxDisableResize
Setting default value
Failed to read: session.screen0.workspacewarping
Setting default value
Failed to read: session.screen0.showwindowposition
Setting default value
Failed to read: session.screen0.autoRaise
Setting default value
Failed to read: session.screen0.clickRaises
Setting default value
Failed to read: session.screen0.defaultDeco
Setting default value
Failed to read: session.screen0.tab.placement
Setting default value
Failed to read: session.screen0.windowMenu
Setting default value
Failed to read: session.screen0.noFocusWhileTypingDelay
Setting default value
Failed to read: session.screen0.workspaces
Setting default value
Failed to read: session.screen0.edgeSnapThreshold
Setting default value
Failed to read: session.screen0.window.focus.alpha
Setting default value
Failed to read: session.screen0.window.unfocus.alpha
Setting default value
Failed to read: session.screen0.menu.alpha
Setting default value
Failed to read: session.screen0.menuDelay
Setting default value
Failed to read: session.screen0.tab.width
Setting default value
Failed to read: session.screen0.tooltipDelay
Setting default value
Failed to read: session.screen0.allowRemoteActions
Setting default value
Failed to read: session.screen0.clientMenu.usePixmap
Setting default value
Failed to read: session.screen0.tabs.usePixmap
Setting default value
Failed to read: session.screen0.tabs.maxOver
Setting default value
Failed to read: session.screen0.tabs.intitlebar
Setting default value
Failed to read: session.screen0.focusModel
Setting default value
Failed to read: session.screen0.tabFocusModel
Setting default value
Failed to read: session.screen0.focusNewWindows
Setting default value
Failed to read: session.screen0.focusSameHead
Setting default value
Failed to read: session.screen0.rowPlacementDirection
Setting default value
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
Setting default value
Failed to read: session.screen0.slit.placement
Setting default value
Failed to read: session.screen0.slit.alpha
Setting default value
Failed to read: session.screen0.slit.onhead
Setting default value
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
Setting default value
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
Setting default value
Failed to read: session.screen0.toolbar.onhead
Setting default value
Failed to read: session.screen0.toolbar.placement
Setting default value
Failed to read: session.screen0.toolbar.height
Setting default value
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
Setting default value
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
 0:06.16 INFO Identified 1 affected tests
 0:06.16 INFO Installing browser
 0:06.20 INFO Downloading Chrome for Testing from https://storage.googleapis.com/chrome-for-testing-public/141.0.7378.3/linux64/chrome-linux64.zip
 0:09.96 INFO Downloading Mojo bindings from https://storage.googleapis.com/chrome-for-testing-public/141.0.7378.3/mojojs.zip
 0:10.03 INFO MojoJS enabled automatically (mojojs_path: /home/test/web-platform-tests/_venv3/mojojs/gen)
 0:10.05 INFO Download info for matching ChromeDriver version found.
 0:10.05 INFO Downloading ChromeDriver from https://storage.googleapis.com/chrome-for-testing-public/141.0.7378.3/linux64/chromedriver-linux64.zip
 0:10.34 INFO Automatically turning on experimental features for Chrome Dev/Canary or Chromium trunk
 0:15.95 INFO Installed font: Ahem.ttf
 0:16.88 wptserve INFO Starting http server on http://127.0.0.1:8001
 0:16.92 wptserve INFO Starting http server on http://127.0.0.1:8000
 0:16.95 wptserve INFO Starting http server on http://127.0.0.1:8002
 0:16.97 wptserve INFO Starting https server on https://127.0.0.1:8444
 0:16.98 wptserve INFO Starting https server on https://127.0.0.1:8443
 0:16.99 wptserve INFO Starting http server on http://127.0.0.1:8003
 0:17.00 wptserve INFO Starting https server on https://127.0.0.1:8446
 0:17.03 wptserve INFO Create socket on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8889))
 0:17.03 wptserve INFO Bind on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8889))
 0:17.03 wptserve INFO Listen on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8889))
 0:17.03 wptserve INFO Starting https server on https://127.0.0.1:8445
 0:17.04 wptserve INFO Starting http2 server on https://127.0.0.1:9000
 0:17.04 wptserve INFO Create socket on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8888))
 0:17.04 wptserve INFO Bind on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8888))
 0:17.04 wptserve INFO Listen on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8888))
 0:17.12 wptserve INFO Starting WebTransport over HTTP/3 server on 127.0.0.1:11000
 0:17.37 SUITE_START: web-platform-test - running 2 tests
 0:26.99 INFO Using 1 child processes
 0:27.00 INFO Starting WebDriver: /home/test/web-platform-tests/_venv3/bin/chrome/chromedriver --port=53317 --ignore-explicit-port --url-base=/ --enable-chrome-logs --disable-build-check
 0:27.01 INFO Got WebDriver port 37633
 0:27.11 pid:2205 Full command: /home/test/web-platform-tests/_venv3/bin/chrome/chromedriver --port=53317 --ignore-explicit-port --url-base=/ --enable-chrome-logs --disable-build-check
pid:2205 Starting ChromeDriver 141.0.7378.3 (abc2a1775f62aea9893ba3099b3e86dfa04e3fd5-refs/branch-heads/7378@{#7}) on port 0
 0:27.11 pid:2205 Only local connections are allowed.
 0:27.11 pid:2205 Please see https://chromedriver.chromium.org/security-considerations for suggestions on keeping ChromeDriver safe.
 0:27.11 pid:2205 ChromeDriver was started successfully on port 37633.
 0:27.11 INFO Webdriver started successfully.
 0:27.11 INFO Starting runner
 0:28.32 pid:2205 [2252:2252:0905/190155.441779:WARNING:ui/gfx/linux/gpu_memory_buffer_support_x11.cc:49] dri3 extension not supported.
 0:28.32 pid:2205 [2252:2252:0905/190155.444254:WARNING:sandbox/policy/linux/sandbox_linux.cc:414] InitializeSandbox() called with multiple threads in process gpu-process.
Failed to read: session.screen0.titlebar.left
Setting default value
Failed to read: session.screen0.titlebar.right
Setting default value
 0:28.41 pid:2205 [1757098915.529][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.
 0:28.45 pid:2205 [2222:2222:0905/190155.569437: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
 0:28.45 pid:2205 [2222:2222:0905/190155.569459:WARNING:dbus/property.cc:174] GetAll request failed for: org.freedesktop.UPower.Device
 0:28.47 pid:2205 [2222:2222:0905/190155.587343:WARNING:ui/base/idle/idle_linux.cc:98] None of the known D-Bus ScreenSaver services could be used.
 0:28.57 TEST_START: /dom/observable/tentative/observable-constructor.any.html
 0:28.69 pid:2205 [2222:2222:0905/190155.810690:INFO:CONSOLE:390] "Uncaught Error: custom error", source: http://web-platform.test:8000/dom/observable/tentative/observable-constructor.any.js (390)
 0:28.69 pid:2205 [2222:2222:0905/190155.811140:INFO:CONSOLE:415] "Uncaught Error: custom error", source: http://web-platform.test:8000/dom/observable/tentative/observable-constructor.any.js (415)
 0:28.69 pid:2205 [2222:2222:0905/190155.811626:INFO:CONSOLE:440] "Uncaught Error: custom error", source: http://web-platform.test:8000/dom/observable/tentative/observable-constructor.any.js (440)
 0:28.69 pid:2205 [2222:2222:0905/190155.812026:INFO:CONSOLE:475] "Uncaught Error: custom error", source: http://web-platform.test:8000/dom/observable/tentative/observable-constructor.any.js (475)
 0:28.69 pid:2205 [2222:2222:0905/190155.812489:INFO:CONSOLE:508] "Uncaught Error: error 2", source: http://web-platform.test:8000/dom/observable/tentative/observable-constructor.any.js (508)
 0:28.70 pid:2205 [2222:2222:0905/190155.812893:INFO:CONSOLE:543] "Uncaught Error: error 2", source: http://web-platform.test:8000/dom/observable/tentative/observable-constructor.any.js (543)
 0:28.70 pid:2205 [2222:2222:0905/190155.813351:INFO:CONSOLE:584] "Uncaught not a real error", source: http://web-platform.test:8000/dom/observable/tentative/observable-constructor.any.js (584)
 0:28.70 pid:2205 [2222:2222:0905/190155.813600:INFO:CONSOLE:584] "Uncaught not a real error", source: http://web-platform.test:8000/dom/observable/tentative/observable-constructor.any.js (584)
 0:28.70 pid:2205 [2222:2222:0905/190155.813767:INFO:CONSOLE:615] "Uncaught not a real error", source: http://web-platform.test:8000/dom/observable/tentative/observable-constructor.any.js (615)
 0:28.70 pid:2205 [2222:2222:0905/190155.815419:INFO:CONSOLE:1524] "Uncaught Error: assert_false: expected false got true", source: http://web-platform.test:8000/resources/testharness.js (1524)
 0:28.70 pid:2205 [2222:2222:0905/190155.816434:INFO:CONSOLE:843] "Uncaught calling error()", source: http://web-platform.test:8000/dom/observable/tentative/observable-constructor.any.js (843)
 0:28.70 pid:2205 [2222:2222:0905/190155.816826:INFO:CONSOLE:886] "Uncaught Error: custom error", source: http://web-platform.test:8000/dom/observable/tentative/observable-constructor.any.js (886)
 0:28.70 pid:2205 [2222:2222:0905/190155.817273:INFO:CONSOLE:909] "Uncaught Error: custom error", source: http://web-platform.test:8000/dom/observable/tentative/observable-constructor.any.js (909)
 0:28.77 TEST_END: Test OK. Subtests passed 43/43. Unexpected 0
 0:28.77 TEST_START: /dom/observable/tentative/observable-constructor.any.worker.html
 0:29.00 TEST_END: Test OK. Subtests passed 43/43. Unexpected 0
 0:29.00 INFO No more tests
 0:29.06 INFO Closing logging queue
 0:29.06 INFO queue closed
 0:29.12 SUITE_END

web-platform-test
~~~~~~~~~~~~~~~~~
Ran 88 checks (86 subtests, 2 tests)
Expected results: 88
Unexpected results: 0
OK
 0:29.12 INFO Got 0 unexpected results, with 0 unexpected passes
 0:29.12 wptserve INFO Stopped WebTransport over HTTP/3 server on 127.0.0.1:11000
 0:29.17 wptserve INFO Stopped http server on 127.0.0.1:8000
 0:29.38 wptserve INFO Stopped http server on 127.0.0.1:8001
 0:29.39 wptserve INFO Stopped http server on 127.0.0.1:8445
 0:29.39 wptserve INFO Stopped http server on 127.0.0.1:8446
 0:29.39 wptserve INFO Stopped http server on 127.0.0.1:8003
 0:29.39 wptserve INFO Stopped http server on 127.0.0.1:8002
 0:29.39 wptserve INFO Stopped http server on 127.0.0.1:8444
 0:29.39 wptserve INFO Stopped http server on 127.0.0.1:8443
 0:29.39 wptserve INFO Close on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8888))
 0:29.39 wptserve INFO Close on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8889))
 0:29.39 wptserve INFO Stopped http server on 127.0.0.1:9000
 0:29.50 INFO Removed font: Ahem.ttf
 0:29.52 INFO Closing logging queue
 0:29.52 INFO queue closed
[taskcluster 2025-09-05 19:02:02.518Z] === Task Finished ===
[taskcluster 2025-09-05 19:02:03.427Z] Successful task run with exit code: 0 completed in 194.844 seconds