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Merged
chromium-wpt-export-bot merged 1 commit into from
Jan 12, 2026

WebNN: Retry createContext to avoid service connection error

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Merged

WebNN: Retry createContext to avoid service connection error #57049

WebNN: Retry createContext to avoid service connection error
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Community-TC Integration / wpt-chrome-dev-results succeeded Jan 12, 2026 in 12m 44s

Community-TC (pull_request)

Collect results for all tests affected by a pull request in chrome.

Details

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

Task Status

Started: 2026-01-12T06:01:09.726Z
Resolved: 2026-01-12T06:13:53.379Z
Task Execution Time: 12 minutes, 43 seconds, 653 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 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 2026-01-12 06:01:09.971Z] Task ID: TfLgHPzVTdett4L6oZQaxw
[taskcluster 2026-01-12 06:01:09.971Z] Worker ID: 8932063550919795532
[taskcluster 2026-01-12 06:01:09.971Z] Worker Group: us-central1-f
[taskcluster 2026-01-12 06:01:09.971Z] Worker Node Type: projects/757942385826/machineTypes/n2-standard-4
[taskcluster 2026-01-12 06:01:09.971Z] Worker Pool: proj-wpt/ci
[taskcluster 2026-01-12 06:01:09.971Z] Worker Version: 46.1.0
[taskcluster 2026-01-12 06:01:09.971Z] Public IP: 34.72.5.69
[taskcluster 2026-01-12 06:01:09.971Z] Hostname: proj-wpt-ci-cjb1vk6hsccmgr231g0u0a

[taskcluster 2026-01-12 06:01:10.625Z] === 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

...(8154 lines hidden)...

    at Test.step (https://web-platform.test:8443/resources/testharness.js:2869:25)
    at https://web-platform.test:8443/resources/testharness.js:2916:35
/webnn/conformance_tests/pad.https.any.html?npu
  FAIL [required] pad float32 4D tensor options.mode='edge' - promise_test: Unhandled rejection with value: object "NotSupportedError: Failed to execute 'build' on 'MLGraphBuilder': The edge padding mode is not supported in tflite schema."
Error
    at get_stack (https://web-platform.test:8443/resources/testharness.js:4802:21)
    at new AssertionError (https://web-platform.test:8443/resources/testharness.js:4795:22)
    at assert (https://web-platform.test:8443/resources/testharness.js:4779:19)
    at Test.<anonymous> (https://web-platform.test:8443/resources/testharness.js:764:29)
    at Test.step (https://web-platform.test:8443/resources/testharness.js:2869:25)
    at https://web-platform.test:8443/resources/testharness.js:2916:35
  FAIL [required] pad float16 4D tensor options.mode='edge' - promise_test: Unhandled rejection with value: object "NotSupportedError: Failed to execute 'build' on 'MLGraphBuilder': The edge padding mode is not supported in tflite schema."
Error
    at get_stack (https://web-platform.test:8443/resources/testharness.js:4802:21)
    at new AssertionError (https://web-platform.test:8443/resources/testharness.js:4795:22)
    at assert (https://web-platform.test:8443/resources/testharness.js:4779:19)
    at Test.<anonymous> (https://web-platform.test:8443/resources/testharness.js:764:29)
    at Test.step (https://web-platform.test:8443/resources/testharness.js:2869:25)
    at https://web-platform.test:8443/resources/testharness.js:2916:35
/webnn/conformance_tests/qdq_subgraph.https.any.html?gpu
  CRASH /webnn/conformance_tests/qdq_subgraph.https.any.html?gpu
/webnn/conformance_tests/reduce_mean.https.any.html?gpu
  ERROR /webnn/conformance_tests/reduce_mean.https.any.html?gpu - Uncaught ReferenceError: webnn_conformance_test is not defined
ReferenceError: webnn_conformance_test is not defined
    at https://web-platform.test:8443/webnn/conformance_tests/reduce_mean.https.any.js:1245:1
/webnn/conformance_tests/scatterElements.https.any.html?cpu
  FAIL [required] scatterElements float32 tensors along axis 0 - promise_test: Unhandled rejection with value: object "NotSupportedError: Failed to execute 'build' on 'MLGraphBuilder': scatterElements only supports constant indices."
Error
    at get_stack (https://web-platform.test:8443/resources/testharness.js:4802:21)
    at new AssertionError (https://web-platform.test:8443/resources/testharness.js:4795:22)
    at assert (https://web-platform.test:8443/resources/testharness.js:4779:19)
    at Test.<anonymous> (https://web-platform.test:8443/resources/testharness.js:764:29)
    at Test.step (https://web-platform.test:8443/resources/testharness.js:2869:25)
    at https://web-platform.test:8443/resources/testharness.js:2916:35
  FAIL [required] scatterElements float32 tensors along axis 1 - promise_test: Unhandled rejection with value: object "NotSupportedError: Failed to execute 'build' on 'MLGraphBuilder': scatterElements only supports constant indices."
Error
    at get_stack (https://web-platform.test:8443/resources/testharness.js:4802:21)
    at new AssertionError (https://web-platform.test:8443/resources/testharness.js:4795:22)
    at assert (https://web-platform.test:8443/resources/testharness.js:4779:19)
    at Test.<anonymous> (https://web-platform.test:8443/resources/testharness.js:764:29)
    at Test.step (https://web-platform.test:8443/resources/testharness.js:2869:25)
    at https://web-platform.test:8443/resources/testharness.js:2916:35
  FAIL [required] scatterElements float16 tensors along axis 0 - promise_test: Unhandled rejection with value: object "NotSupportedError: Failed to execute 'build' on 'MLGraphBuilder': scatterElements only supports constant indices."
Error
    at get_stack (https://web-platform.test:8443/resources/testharness.js:4802:21)
    at new AssertionError (https://web-platform.test:8443/resources/testharness.js:4795:22)
    at assert (https://web-platform.test:8443/resources/testharness.js:4779:19)
    at Test.<anonymous> (https://web-platform.test:8443/resources/testharness.js:764:29)
    at Test.step (https://web-platform.test:8443/resources/testharness.js:2869:25)
    at https://web-platform.test:8443/resources/testharness.js:2916:35
  FAIL [required] scatterElements float16 tensors along axis 1 - promise_test: Unhandled rejection with value: object "NotSupportedError: Failed to execute 'build' on 'MLGraphBuilder': scatterElements only supports constant indices."
Error
    at get_stack (https://web-platform.test:8443/resources/testharness.js:4802:21)
    at new AssertionError (https://web-platform.test:8443/resources/testharness.js:4795:22)
    at assert (https://web-platform.test:8443/resources/testharness.js:4779:19)
    at Test.<anonymous> (https://web-platform.test:8443/resources/testharness.js:764:29)
    at Test.step (https://web-platform.test:8443/resources/testharness.js:2869:25)
    at https://web-platform.test:8443/resources/testharness.js:2916:35
/webnn/conformance_tests/scatterElements.https.any.html?gpu
  FAIL [required] scatterElements float32 tensors along axis 0 - promise_test: Unhandled rejection with value: object "NotSupportedError: Failed to execute 'build' on 'MLGraphBuilder': scatterElements only supports constant indices."
Error
    at get_stack (https://web-platform.test:8443/resources/testharness.js:4802:21)
    at new AssertionError (https://web-platform.test:8443/resources/testharness.js:4795:22)
    at assert (https://web-platform.test:8443/resources/testharness.js:4779:19)
    at Test.<anonymous> (https://web-platform.test:8443/resources/testharness.js:764:29)
    at Test.step (https://web-platform.test:8443/resources/testharness.js:2869:25)
    at https://web-platform.test:8443/resources/testharness.js:2916:35
  FAIL [required] scatterElements float32 tensors along axis 1 - promise_test: Unhandled rejection with value: object "NotSupportedError: Failed to execute 'build' on 'MLGraphBuilder': scatterElements only supports constant indices."
Error
    at get_stack (https://web-platform.test:8443/resources/testharness.js:4802:21)
    at new AssertionError (https://web-platform.test:8443/resources/testharness.js:4795:22)
    at assert (https://web-platform.test:8443/resources/testharness.js:4779:19)
    at Test.<anonymous> (https://web-platform.test:8443/resources/testharness.js:764:29)
    at Test.step (https://web-platform.test:8443/resources/testharness.js:2869:25)
    at https://web-platform.test:8443/resources/testharness.js:2916:35
  FAIL [required] scatterElements float16 tensors along axis 0 - promise_test: Unhandled rejection with value: object "NotSupportedError: Failed to execute 'build' on 'MLGraphBuilder': scatterElements only supports constant indices."
Error
    at get_stack (https://web-platform.test:8443/resources/testharness.js:4802:21)
    at new AssertionError (https://web-platform.test:8443/resources/testharness.js:4795:22)
    at assert (https://web-platform.test:8443/resources/testharness.js:4779:19)
    at Test.<anonymous> (https://web-platform.test:8443/resources/testharness.js:764:29)
    at Test.step (https://web-platform.test:8443/resources/testharness.js:2869:25)
    at https://web-platform.test:8443/resources/testharness.js:2916:35
  FAIL [required] scatterElements float16 tensors along axis 1 - promise_test: Unhandled rejection with value: object "NotSupportedError: Failed to execute 'build' on 'MLGraphBuilder': scatterElements only supports constant indices."
Error
    at get_stack (https://web-platform.test:8443/resources/testharness.js:4802:21)
    at new AssertionError (https://web-platform.test:8443/resources/testharness.js:4795:22)
    at assert (https://web-platform.test:8443/resources/testharness.js:4779:19)
    at Test.<anonymous> (https://web-platform.test:8443/resources/testharness.js:764:29)
    at Test.step (https://web-platform.test:8443/resources/testharness.js:2869:25)
    at https://web-platform.test:8443/resources/testharness.js:2916:35
/webnn/conformance_tests/scatterElements.https.any.html?npu
  FAIL [required] scatterElements float32 tensors along axis 0 - promise_test: Unhandled rejection with value: object "NotSupportedError: Failed to execute 'build' on 'MLGraphBuilder': scatterElements only supports constant indices."
Error
    at get_stack (https://web-platform.test:8443/resources/testharness.js:4802:21)
    at new AssertionError (https://web-platform.test:8443/resources/testharness.js:4795:22)
    at assert (https://web-platform.test:8443/resources/testharness.js:4779:19)
    at Test.<anonymous> (https://web-platform.test:8443/resources/testharness.js:764:29)
    at Test.step (https://web-platform.test:8443/resources/testharness.js:2869:25)
    at https://web-platform.test:8443/resources/testharness.js:2916:35
  FAIL [required] scatterElements float32 tensors along axis 1 - promise_test: Unhandled rejection with value: object "NotSupportedError: Failed to execute 'build' on 'MLGraphBuilder': scatterElements only supports constant indices."
Error
    at get_stack (https://web-platform.test:8443/resources/testharness.js:4802:21)
    at new AssertionError (https://web-platform.test:8443/resources/testharness.js:4795:22)
    at assert (https://web-platform.test:8443/resources/testharness.js:4779:19)
    at Test.<anonymous> (https://web-platform.test:8443/resources/testharness.js:764:29)
    at Test.step (https://web-platform.test:8443/resources/testharness.js:2869:25)
    at https://web-platform.test:8443/resources/testharness.js:2916:35
  FAIL [required] scatterElements float16 tensors along axis 0 - promise_test: Unhandled rejection with value: object "NotSupportedError: Failed to execute 'build' on 'MLGraphBuilder': scatterElements only supports constant indices."
Error
    at get_stack (https://web-platform.test:8443/resources/testharness.js:4802:21)
    at new AssertionError (https://web-platform.test:8443/resources/testharness.js:4795:22)
    at assert (https://web-platform.test:8443/resources/testharness.js:4779:19)
    at Test.<anonymous> (https://web-platform.test:8443/resources/testharness.js:764:29)
    at Test.step (https://web-platform.test:8443/resources/testharness.js:2869:25)
    at https://web-platform.test:8443/resources/testharness.js:2916:35
  FAIL [required] scatterElements float16 tensors along axis 1 - promise_test: Unhandled rejection with value: object "NotSupportedError: Failed to execute 'build' on 'MLGraphBuilder': scatterElements only supports constant indices."
Error
    at get_stack (https://web-platform.test:8443/resources/testharness.js:4802:21)
    at new AssertionError (https://web-platform.test:8443/resources/testharness.js:4795:22)
    at assert (https://web-platform.test:8443/resources/testharness.js:4779:19)
    at Test.<anonymous> (https://web-platform.test:8443/resources/testharness.js:764:29)
    at Test.step (https://web-platform.test:8443/resources/testharness.js:2869:25)
    at https://web-platform.test:8443/resources/testharness.js:2916:35
/webnn/conformance_tests/tanh.https.any.html?gpu
  ERROR /webnn/conformance_tests/tanh.https.any.html?gpu - Uncaught ReferenceError: webnn_conformance_test is not defined
ReferenceError: webnn_conformance_test is not defined
    at https://web-platform.test:8443/webnn/conformance_tests/tanh.https.any.js:588:1
/webnn/conformance_tests/tile.https.any.html?npu
  TIMEOUT /webnn/conformance_tests/tile.https.any.html?npu
/webnn/idlharness.https.any.sharedworker.html
  FAIL MLContext interface: attribute accelerated - assert_true: The prototype object must have a property "accelerated" expected true got false
    at IdlInterface.<anonymous> (https://web-platform.test:8443/resources/idlharness.js:2223:13)
    at Test.step (https://web-platform.test:8443/resources/testharness.js:2869:25)
    at IdlInterface.test_member_attribute (https://web-platform.test:8443/resources/idlharness.js:2170:12)
    at IdlInterface.test_members (https://web-platform.test:8443/resources/idlharness.js:2712:22)
    at IdlInterface.test (https://web-platform.test:8443/resources/idlharness.js:1448:10)
  FAIL MLContext interface: context must inherit property "accelerated" with the proper type - assert_inherits: property "accelerated" not found in prototype chain
    at IdlInterface.<anonymous> (https://web-platform.test:8443/resources/idlharness.js:2923:25)
    at Test.step (https://web-platform.test:8443/resources/testharness.js:2869:25)
    at test (https://web-platform.test:8443/resources/testharness.js:633:30)
    at self.subsetTestByKey (https://web-platform.test:8443/resources/idlharness.js:44:14)
/webnn/idlharness.https.any.html
  FAIL MLContext interface: attribute accelerated - assert_true: The prototype object must have a property "accelerated" expected true got false
    at IdlInterface.<anonymous> (https://web-platform.test:8443/resources/idlharness.js:2223:13)
    at Test.step (https://web-platform.test:8443/resources/testharness.js:2869:25)
    at IdlInterface.test_member_attribute (https://web-platform.test:8443/resources/idlharness.js:2170:12)
    at IdlInterface.test_members (https://web-platform.test:8443/resources/idlharness.js:2712:22)
    at IdlInterface.test (https://web-platform.test:8443/resources/idlharness.js:1448:10)
  FAIL MLContext interface: context must inherit property "accelerated" with the proper type - assert_inherits: property "accelerated" not found in prototype chain
    at IdlInterface.<anonymous> (https://web-platform.test:8443/resources/idlharness.js:2923:25)
    at Test.step (https://web-platform.test:8443/resources/testharness.js:2869:25)
    at test (https://web-platform.test:8443/resources/testharness.js:633:30)
    at self.subsetTestByKey (https://web-platform.test:8443/resources/idlharness.js:44:14)
/webnn/idlharness.https.any.serviceworker.html
  FAIL MLContext interface: attribute accelerated - assert_true: The prototype object must have a property "accelerated" expected true got false
    at IdlInterface.<anonymous> (https://web-platform.test:8443/resources/idlharness.js:2223:13)
    at Test.step (https://web-platform.test:8443/resources/testharness.js:2869:25)
    at IdlInterface.test_member_attribute (https://web-platform.test:8443/resources/idlharness.js:2170:12)
    at IdlInterface.test_members (https://web-platform.test:8443/resources/idlharness.js:2712:22)
    at IdlInterface.test (https://web-platform.test:8443/resources/idlharness.js:1448:10)
  FAIL MLContext interface: context must inherit property "accelerated" with the proper type - assert_inherits: property "accelerated" not found in prototype chain
    at IdlInterface.<anonymous> (https://web-platform.test:8443/resources/idlharness.js:2923:25)
    at Test.step (https://web-platform.test:8443/resources/testharness.js:2869:25)
    at test (https://web-platform.test:8443/resources/testharness.js:633:30)
    at https://web-platform.test:8443/resources/idlharness.js:44:14
/webnn/idlharness.https.any.worker.html
  FAIL MLContext interface: attribute accelerated - assert_true: The prototype object must have a property "accelerated" expected true got false
    at IdlInterface.<anonymous> (https://web-platform.test:8443/resources/idlharness.js:2223:13)
    at Test.step (https://web-platform.test:8443/resources/testharness.js:2869:25)
    at IdlInterface.test_member_attribute (https://web-platform.test:8443/resources/idlharness.js:2170:12)
    at IdlInterface.test_members (https://web-platform.test:8443/resources/idlharness.js:2712:22)
    at IdlInterface.test (https://web-platform.test:8443/resources/idlharness.js:1448:10)
  FAIL MLContext interface: context must inherit property "accelerated" with the proper type - assert_inherits: property "accelerated" not found in prototype chain
    at IdlInterface.<anonymous> (https://web-platform.test:8443/resources/idlharness.js:2923:25)
    at Test.step (https://web-platform.test:8443/resources/testharness.js:2869:25)
    at test (https://web-platform.test:8443/resources/testharness.js:633:30)
    at self.subsetTestByKey (https://web-platform.test:8443/resources/idlharness.js:44:14)
 8:54.21 INFO Got 27 unexpected results, with 0 unexpected passes
 8:54.21 wptserve INFO Stopped http server on 127.0.0.1:8000
 8:54.21 wptserve INFO Stopped http server on 127.0.0.1:8001
 8:54.21 wptserve INFO Stopped http server on 127.0.0.1:8002
 8:54.22 wptserve INFO Stopped http server on 127.0.0.1:8003
 8:54.22 wptserve INFO Stopped http server on 127.0.0.1:8443
 8:54.23 wptserve INFO Stopped http server on 127.0.0.1:8444
 8:54.23 wptserve INFO Stopped http server on 127.0.0.1:8446
 8:54.23 wptserve INFO Stopped http server on 127.0.0.1:9000
 8:54.23 wptserve INFO Stopped http server on 127.0.0.1:8445
 8:54.23 wptserve INFO Stopped WebTransport over HTTP/3 server on 127.0.0.1:11000
 8:54.59 wptserve INFO Close on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8888))
 8:54.60 wptserve INFO Close on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8889))
 8:54.63 INFO Removed font: Ahem.ttf
 8:54.66 INFO Closing logging queue
 8:54.66 INFO queue closed
 8:54.66 INFO Tolerating 27 unexpected results
/usr/lib/python3.10/multiprocessing/resource_tracker.py:224: UserWarning: resource_tracker: There appear to be 3 leaked semaphore objects to clean up at shutdown
  warnings.warn('resource_tracker: There appear to be %d '
[taskcluster 2026-01-12 06:13:50.248Z] === Task Finished ===
[taskcluster 2026-01-12 06:13:51.160Z] Successful task run with exit code: 0 completed in 761.19 seconds
View more details on Community-TC Integration