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gh-159449: Fix a free-threaded asyncio race that corrupts the task lists #217671

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gh-159449: Fix a free-threaded asyncio race that corrupts the task lists

gh-159449: Fix a free-threaded asyncio race that corrupts the task lists #217671

Triggered via pull request November 2, 2026 13:51
@jblespiaujblespiau
synchronize #159483
jblespiau:fix-asyncio-task-unregister-race
Status Failure
Total duration 1h 10m 5s
Artifacts 4

build.yml

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Matrix: build-ios
Matrix: build-macos
Matrix: build-san
Matrix: Ubuntu SSL tests
Matrix: build-ubuntu
Matrix: build-windows
Matrix: cifuzz
Docs  /  Doctest
7m 29s
Docs / Doctest
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6m 24s
Ubuntu (installed) / build, install and test
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20m 14s
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Hypothesis tests on Ubuntu
11m 2s
Hypothesis tests on Ubuntu
Lazy imports enabled  /  Run Tests with lazy_imports=all
10m 37s
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Cross build Linux
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144 errors, 5 warnings, and 14 notices
Ubuntu (free-threading) / build and test (ubuntu-26.04-arm)
Process completed with exit code 2.
Ubuntu (free-threading) / build and test (ubuntu-26.04-arm): Modules/_asynciomodule.c#L2312
‘TaskObj’ has no member named ‘task_tid’; did you mean ‘task_node’?
Ubuntu (free-threading) / build and test (ubuntu-26.04-arm): Modules/_asynciomodule.c#L2177
‘TaskObj’ has no member named ‘task_tid’; did you mean ‘task_node’?
Ubuntu (free-threading) / build and test (ubuntu-26.04)
Process completed with exit code 2.
Ubuntu (free-threading) / build and test (ubuntu-26.04): Modules/_asynciomodule.c#L2312
‘TaskObj’ has no member named ‘task_tid’; did you mean ‘task_node’?
Ubuntu (free-threading) / build and test (ubuntu-26.04): Modules/_asynciomodule.c#L2177
‘TaskObj’ has no member named ‘task_tid’; did you mean ‘task_node’?
iOS (free-threading)
Process completed with exit code 1.
Docs / Check EPUB
Process completed with exit code 1.
macOS (free-threading) / build and test (macos-26)
Process completed with exit code 2.
Sanitizers / TSan (free-threading)
Process completed with exit code 2.
Docs / Docs
Process completed with exit code 2.
Ubuntu SSL tests (ubuntu-26.04, openssl, 1.1.1w)
Process completed with exit code 2.
test_asyncio.test_futures: Lib/test/test_asyncio/test_futures.py#L1
test_asyncio.test_futures worker non-zero exit code
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_PyFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-4404' - Task-1000000000 + Task-4404
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_CFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-3303' - Task-1000000000 + Task-3303
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_CFuture_SubclassTests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-2202' - Task-1000000000 + Task-2202
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTaskSubclass_PyFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-1101' - Task-1000000000 + Task-1101
Ubuntu SSL tests (ubuntu-26.04, openssl, 3.6.5)
Process completed with exit code 2.
test_asyncio.test_futures: Lib/test/test_asyncio/test_futures.py#L1
test_asyncio.test_futures worker non-zero exit code
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_PyFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-4404' - Task-1000000000 + Task-4404
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_CFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-3303' - Task-1000000000 + Task-3303
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_CFuture_SubclassTests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-2202' - Task-1000000000 + Task-2202
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTaskSubclass_PyFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-1101' - Task-1000000000 + Task-1101
Windows (free-threading) / Build and test (x64, switch-case)
Process completed with exit code 1.
Windows (free-threading) / Build and test (x64, switch-case): Modules/_asynciomodule.c#L2312
'task_tid': is not a member of 'TaskObj' [D:\a\cpython\cpython\PCbuild\_asyncio.vcxproj]
Windows (free-threading) / Build and test (x64, switch-case): Modules/_asynciomodule.c#L2177
'task_tid': is not a member of 'TaskObj' [D:\a\cpython\cpython\PCbuild\_asyncio.vcxproj]
Ubuntu SSL tests (ubuntu-26.04, openssl, 3.5.9)
Process completed with exit code 2.
test_asyncio.test_futures: Lib/test/test_asyncio/test_futures.py#L1
test_asyncio.test_futures worker non-zero exit code
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_PyFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-4404' - Task-1000000000 + Task-4404
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_CFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-3303' - Task-1000000000 + Task-3303
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_CFuture_SubclassTests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-2202' - Task-1000000000 + Task-2202
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTaskSubclass_PyFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-1101' - Task-1000000000 + Task-1101
Ubuntu SSL tests (ubuntu-26.04, openssl, 4.0.3)
Process completed with exit code 2.
test_asyncio.test_futures: Lib/test/test_asyncio/test_futures.py#L1
test_asyncio.test_futures worker non-zero exit code
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_PyFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-4404' - Task-1000000000 + Task-4404
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_CFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-3303' - Task-1000000000 + Task-3303
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_CFuture_SubclassTests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-2202' - Task-1000000000 + Task-2202
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTaskSubclass_PyFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-1101' - Task-1000000000 + Task-1101
Ubuntu SSL tests (ubuntu-26.04, aws-lc, 5.10.0)
Process completed with exit code 2.
test_asyncio.test_futures: Lib/test/test_asyncio/test_futures.py#L1
test_asyncio.test_futures worker non-zero exit code
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_PyFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-4404' - Task-1000000000 + Task-4404
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_CFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-3303' - Task-1000000000 + Task-3303
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_CFuture_SubclassTests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-2202' - Task-1000000000 + Task-2202
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTaskSubclass_PyFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-1101' - Task-1000000000 + Task-1101
Windows (free-threading) / Build and test (arm64, switch-case)
Process completed with exit code 1.
Windows (free-threading) / Build and test (arm64, switch-case): Modules/_asynciomodule.c#L2312
'task_tid': is not a member of 'TaskObj' [C:\a\cpython\cpython\PCbuild\_asyncio.vcxproj]
Windows (free-threading) / Build and test (arm64, switch-case): Modules/_asynciomodule.c#L2177
'task_tid': is not a member of 'TaskObj' [C:\a\cpython\cpython\PCbuild\_asyncio.vcxproj]
Ubuntu SSL tests (ubuntu-26.04, openssl, 3.4.8)
Process completed with exit code 2.
test_asyncio.test_futures: Lib/test/test_asyncio/test_futures.py#L1
test_asyncio.test_futures worker non-zero exit code
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_PyFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-4404' - Task-1000000000 + Task-4404
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_CFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-3303' - Task-1000000000 + Task-3303
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_CFuture_SubclassTests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-2202' - Task-1000000000 + Task-2202
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTaskSubclass_PyFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-1101' - Task-1000000000 + Task-1101
Windows (free-threading) / Build and test (x64, tail-call)
Process completed with exit code 1.
Windows (free-threading) / Build and test (x64, tail-call): Modules/_asynciomodule.c#L2312
'task_tid': is not a member of 'TaskObj' [D:\a\cpython\cpython\PCbuild\_asyncio.vcxproj]
Windows (free-threading) / Build and test (x64, tail-call): Modules/_asynciomodule.c#L2177
'task_tid': is not a member of 'TaskObj' [D:\a\cpython\cpython\PCbuild\_asyncio.vcxproj]
Ubuntu (installed) / build, install and test
Process completed with exit code 2.
test.test_asyncio.test_futures: Lib/test/test_asyncio/test_futures.py#L1
test.test_asyncio.test_futures worker non-zero exit code
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_PyFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-4404' - Task-1000000000 + Task-4404
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_CFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-3303' - Task-1000000000 + Task-3303
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_CFuture_SubclassTests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-2202' - Task-1000000000 + Task-2202
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTaskSubclass_PyFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-1101' - Task-1000000000 + Task-1101
Android (x86_64)
Process completed with exit code 1.
iOS
Process completed with exit code 1.
Lazy imports enabled / Run Tests with lazy_imports=all
Process completed with exit code 123.
test.test_asyncio.test_futures: Lib/test/test_asyncio/test_futures.py#L1
test.test_asyncio.test_futures worker non-zero exit code
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_PyFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-4404' - Task-1000000000 + Task-4404
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_CFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-3303' - Task-1000000000 + Task-3303
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_CFuture_SubclassTests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-2202' - Task-1000000000 + Task-2202
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTaskSubclass_PyFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-1101' - Task-1000000000 + Task-1101
Sanitizers / TSan
Process completed with exit code 2.
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_PyFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-5226' - Task-1000000000 + Task-5226
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_CFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-3916' - Task-1000000000 + Task-3916
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_CFuture_SubclassTests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-2607' - Task-1000000000 + Task-2607
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTaskSubclass_PyFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-1297' - Task-1000000000 + Task-1297
test_asyncio.test_futures: Lib/test/test_asyncio/test_futures.py#L1
test_asyncio.test_futures worker non-zero exit code
Ubuntu / build and test (ubuntu-26.04-arm)
Process completed with exit code 2.
test.test_asyncio.test_futures: Lib/test/test_asyncio/test_futures.py#L1
test.test_asyncio.test_futures worker non-zero exit code
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_PyFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-4404' - Task-1000000000 + Task-4404
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_CFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-3303' - Task-1000000000 + Task-3303
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_CFuture_SubclassTests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-2202' - Task-1000000000 + Task-2202
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTaskSubclass_PyFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-1101' - Task-1000000000 + Task-1101
Windows / Build and test (x64, tail-call)
Process completed with exit code 2.
test.test_asyncio.test_futures: Lib/test/test_asyncio/test_futures.py#L1
test.test_asyncio.test_futures worker non-zero exit code
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_PyFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-4404' - Task-1000000000 + Task-4404
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_CFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-3303' - Task-1000000000 + Task-3303
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_CFuture_SubclassTests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-2202' - Task-1000000000 + Task-2202
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTaskSubclass_PyFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-1101' - Task-1000000000 + Task-1101
Ubuntu / build and test (ubuntu-26.04)
Process completed with exit code 2.
test.test_asyncio.test_futures: Lib/test/test_asyncio/test_futures.py#L1
test.test_asyncio.test_futures worker non-zero exit code
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_PyFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-4404' - Task-1000000000 + Task-4404
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_CFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-3303' - Task-1000000000 + Task-3303
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_CFuture_SubclassTests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-2202' - Task-1000000000 + Task-2202
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTaskSubclass_PyFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-1101' - Task-1000000000 + Task-1101
macOS / build and test (macos-26)
Process completed with exit code 2.
test.test_asyncio.test_futures: Lib/test/test_asyncio/test_futures.py#L1
test.test_asyncio.test_futures worker non-zero exit code
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_PyFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-4404' - Task-1000000000 + Task-4404
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_CFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-3303' - Task-1000000000 + Task-3303
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_CFuture_SubclassTests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-2202' - Task-1000000000 + Task-2202
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTaskSubclass_PyFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-1101' - Task-1000000000 + Task-1101
Sanitizers / MSan
Process completed with exit code 2.
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_PyFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-5226' - Task-1000000000 + Task-5226
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_CFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-3916' - Task-1000000000 + Task-3916
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_CFuture_SubclassTests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-2607' - Task-1000000000 + Task-2607
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTaskSubclass_PyFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-1297' - Task-1000000000 + Task-1297
test.test_asyncio.test_futures: Lib/test/test_asyncio/test_futures.py#L1
test.test_asyncio.test_futures worker non-zero exit code
Windows / Build and test (Win32, switch-case)
Process completed with exit code 2.
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_PyFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-4404' - Task-1000000000 + Task-4404
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_CFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-3303' - Task-1000000000 + Task-3303
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_CFuture_SubclassTests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-2202' - Task-1000000000 + Task-2202
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTaskSubclass_PyFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-1101' - Task-1000000000 + Task-1101
test.test_asyncio.test_futures: Lib/test/test_asyncio/test_futures.py#L1
test.test_asyncio.test_futures worker non-zero exit code
Sanitizers / ASan
Process completed with exit code 2.
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_PyFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-5226' - Task-1000000000 + Task-5226
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_CFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-3916' - Task-1000000000 + Task-3916
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_CFuture_SubclassTests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-2607' - Task-1000000000 + Task-2607
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTaskSubclass_PyFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-1297' - Task-1000000000 + Task-1297
test.test_asyncio.test_futures: Lib/test/test_asyncio/test_futures.py#L1
test.test_asyncio.test_futures worker non-zero exit code
Ubuntu (bolt) / build and test (ubuntu-26.04)
Process completed with exit code 2.
test.test_asyncio.test_futures: Lib/test/test_asyncio/test_futures.py#L1
test.test_asyncio.test_futures worker non-zero exit code
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_PyFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-4404' - Task-1000000000 + Task-4404
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_CFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-3303' - Task-1000000000 + Task-3303
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_CFuture_SubclassTests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-2202' - Task-1000000000 + Task-2202
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTaskSubclass_PyFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-1101' - Task-1000000000 + Task-1101
Windows / Build and test (x64, switch-case)
Process completed with exit code 2.
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_PyFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-4404' - Task-1000000000 + Task-4404
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_CFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-3303' - Task-1000000000 + Task-3303
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_CFuture_SubclassTests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-2202' - Task-1000000000 + Task-2202
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTaskSubclass_PyFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-1101' - Task-1000000000 + Task-1101
test.test_asyncio.test_futures: Lib/test/test_asyncio/test_futures.py#L1
test.test_asyncio.test_futures worker non-zero exit code
Sanitizers / UBSan
Process completed with exit code 2.
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_PyFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-5226' - Task-1000000000 + Task-5226
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_CFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-3916' - Task-1000000000 + Task-3916
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_CFuture_SubclassTests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-2607' - Task-1000000000 + Task-2607
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTaskSubclass_PyFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-1297' - Task-1000000000 + Task-1297
test.test_asyncio.test_futures: Lib/test/test_asyncio/test_futures.py#L1
test.test_asyncio.test_futures worker non-zero exit code
Windows / Build and test (arm64, switch-case)
Process completed with exit code 2.
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_PyFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-4404' - Task-1000000000 + Task-4404
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_CFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-3303' - Task-1000000000 + Task-3303
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTask_CFuture_SubclassTests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-2202' - Task-1000000000 + Task-2202
test_task_get_name_reentered_during_formatting (test.test_asyncio.test_tasks.CTaskSubclass_PyFuture_Tests.test_task_get_name_reentered_during_formatting): Lib/test/test_asyncio/test_tasks.py#L462
AssertionError: 'Task-1000000000' != 'Task-1101' - Task-1000000000 + Task-1101
test.test_asyncio.test_futures: Lib/test/test_asyncio/test_futures.py#L1
test.test_asyncio.test_futures worker non-zero exit code
macOS / build and test (macos-26-intel)
The job has exceeded the maximum execution time of 1h0m0s
All required checks pass
Process completed with exit code 1.
macOS (free-threading) / build and test (macos-26)
`$HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK` is set: not checking for outdated dependents or dependents with broken linkage!
Cross build Linux: Python/marshal.c#L740
unused variable ‘w’ [-Wunused-variable]
Ubuntu (installed) / build, install and test: Python/marshal.c#L740
unused variable ‘w’ [-Wunused-variable]
Hypothesis tests on Ubuntu
No files were found with the provided path: /home/runner/work/cpython/cpython-builddir/.hypothesis/examples/. No artifacts will be uploaded.
macOS / build and test (macos-26)
`$HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK` is set: not checking for outdated dependents or dependents with broken linkage!
Change detection / Create context from changed files
"The ubuntu-latest label will migrate to Ubuntu 26 beginning October 19, 2026. For more information, see https://github.com/actions/runner-images/issues/14748"
C API Docs / Check if all C APIs are documented
"The ubuntu-latest label will migrate to Ubuntu 26 beginning October 19, 2026. For more information, see https://github.com/actions/runner-images/issues/14748"
iOS (free-threading)
Due to capacity constraints, jobs targeting macOS arm64 runners may experience longer queue times.
Docs / Check EPUB
"The ubuntu-latest label will migrate to Ubuntu 26 beginning October 19, 2026. For more information, see https://github.com/actions/runner-images/issues/14748"
macOS (free-threading) / build and test (macos-26)
Due to capacity constraints, jobs targeting macOS arm64 runners may experience longer queue times.
Docs / Docs
"The ubuntu-latest label will migrate to Ubuntu 26 beginning October 19, 2026. For more information, see https://github.com/actions/runner-images/issues/14748"
Android (aarch64)
Due to capacity constraints, jobs targeting macOS arm64 runners may experience longer queue times.
Docs / Check for removed HTML IDs / Check for removed HTML IDs
"The ubuntu-latest label will migrate to Ubuntu 26 beginning October 19, 2026. For more information, see https://github.com/actions/runner-images/issues/14748"
iOS
Due to capacity constraints, jobs targeting macOS arm64 runners may experience longer queue times.
macOS / build and test (macos-26)
Due to capacity constraints, jobs targeting macOS arm64 runners may experience longer queue times.
CIFuzz / cpython3 (address)
"The ubuntu-latest label will migrate to Ubuntu 26 beginning October 19, 2026. For more information, see https://github.com/actions/runner-images/issues/14748"
CIFuzz / cpython3 (memory)
"The ubuntu-latest label will migrate to Ubuntu 26 beginning October 19, 2026. For more information, see https://github.com/actions/runner-images/issues/14748"
CIFuzz / cpython3 (undefined)
"The ubuntu-latest label will migrate to Ubuntu 26 beginning October 19, 2026. For more information, see https://github.com/actions/runner-images/issues/14748"
All required checks pass
"The ubuntu-latest label will migrate to Ubuntu 26 beginning October 19, 2026. For more information, see https://github.com/actions/runner-images/issues/14748"

Artifacts

Produced during runtime
Name Size Digest
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2.49 KB
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UBSan-logs-default
1.42 KB
sha256:39123d18f5d261237dc65b0427000fc6c914b758c19773ee1263d405ee72be0c
html-ids-head.json.gz
132 KB
sha256:4284d26d7b13006af61d988a6bb9842272bb70ed7983de763749c4b3e251b853