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gh-159449: Fix a free-threaded asyncio race that corrupts the task lists #218107

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Triggered via pull request November 5, 2026 04:48

synchronize #159483

jblespiau:fix-asyncio-task-unregister-race

Status Cancelled

Total duration 26m 28s

Artifacts 4

build.yml

on: pull_request

Change detection / Create context from changed files

Matrix: build-ios

Matrix: build-macos

Matrix: build-san

Matrix: Ubuntu SSL tests

Matrix: build-ubuntu

Matrix: build-windows

Matrix: cifuzz

Docs / Check EPUB

Check if Autoconf files are up to date

Check if generated files are up to date

C API Docs / Check if all C APIs are documented

Ubuntu (installed) / build, install and test

Emscripten / build and test

WASI / build and test

Hypothesis tests on Ubuntu

Lazy imports enabled / Run Tests with lazy_imports=all

Cross build Linux

Matrix: build-android

Docs / ... / Check for removed HTML IDs

All required checks pass

Annotations

32 errors, 5 warnings, and 14 notices

Docs / Docs

Process completed with exit code 2.

Docs / Check EPUB

Process completed with exit code 1.

Sanitizers / ASan

Process completed with exit code 2.

test_create_connection_local_addr_nomatch_family (test.test_asyncio.test_events.SelectEventLoopTests.test_create_connection_local_addr_nomatch_family): Lib/test/test_asyncio/test_events.py#L847

AssertionError: OSError not raised

CIFuzz / cpython3 (memory)

Canceling since a higher priority waiting request for Tests-kumaraditya303-fix-asyncio-task-unregister-race exists

CIFuzz / cpython3 (memory)

Path does not exist: cifuzz-sarif/results.sarif

CIFuzz / cpython3 (memory)

The operation was canceled.

CIFuzz / cpython3 (undefined)

Canceling since a higher priority waiting request for Tests-kumaraditya303-fix-asyncio-task-unregister-race exists

CIFuzz / cpython3 (undefined)

Path does not exist: cifuzz-sarif/results.sarif

CIFuzz / cpython3 (undefined)

The operation was canceled.

Windows (free-threading) / Build and test (x64, switch-case)

Canceling since a higher priority waiting request for Tests-kumaraditya303-fix-asyncio-task-unregister-race exists

Windows (free-threading) / Build and test (x64, switch-case)

The operation was canceled.

Windows (free-threading) / Build and test (arm64, switch-case)

Canceling since a higher priority waiting request for Tests-kumaraditya303-fix-asyncio-task-unregister-race exists

Windows (free-threading) / Build and test (arm64, switch-case)

The operation was canceled.

Android (x86_64)

Canceling since a higher priority waiting request for Tests-kumaraditya303-fix-asyncio-task-unregister-race exists

Android (x86_64)

The operation was canceled.

Sanitizers / TSan (free-threading)

Canceling since a higher priority waiting request for Tests-kumaraditya303-fix-asyncio-task-unregister-race exists

Sanitizers / TSan (free-threading)

The operation was canceled.

Canceling since a higher priority waiting request for Tests-kumaraditya303-fix-asyncio-task-unregister-race exists

The operation was canceled.

macOS / build and test (macos-26-intel)

Canceling since a higher priority waiting request for Tests-kumaraditya303-fix-asyncio-task-unregister-race exists

macOS / build and test (macos-26-intel)

The operation was canceled.

iOS (free-threading)

Canceling since a higher priority waiting request for Tests-kumaraditya303-fix-asyncio-task-unregister-race exists

iOS (free-threading)

The operation was canceled.

Canceling since a higher priority waiting request for Tests-kumaraditya303-fix-asyncio-task-unregister-race exists

Canceling since a higher priority waiting request for Tests-kumaraditya303-fix-asyncio-task-unregister-race exists

Canceling since a higher priority waiting request for Tests-kumaraditya303-fix-asyncio-task-unregister-race exists

Canceling since a higher priority waiting request for Tests-kumaraditya303-fix-asyncio-task-unregister-race exists

Canceling since a higher priority waiting request for Tests-kumaraditya303-fix-asyncio-task-unregister-race exists

Canceling since a higher priority waiting request for Tests-kumaraditya303-fix-asyncio-task-unregister-race exists

Canceling since a higher priority waiting request for Tests-kumaraditya303-fix-asyncio-task-unregister-race exists

All required checks pass

Process completed with exit code 1.

Workflow execution policy warning (evaluate mode): .github/workflows/build.yml#L1

Event 'pull_request' is not allowed to trigger Actions workflows. Workflow file: '.github/workflows/build.yml'.

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!

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!

macOS / build and test (macos-26-intel)

`$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"

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"

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"

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"

Android (aarch64)

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.

macOS (free-threading) / 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"

Due to capacity constraints, jobs targeting macOS arm64 runners may experience longer queue times.

iOS (free-threading)

Due to capacity constraints, jobs targeting macOS arm64 runners may experience longer queue times.

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
ASan-logs-default	2.5 KB	`sha256:57aaa0246e507fee9da2358a004ee29284cad800b86d3caf224d0132b803601a`
MSan-logs-default	209 Bytes	`sha256:682f26c2b53df9c780252843f3d5e140fdfcf1e344833cff06049c89b44d40e7`
UBSan-logs-default	1.17 KB	`sha256:e6078a540d5e237c3f790e352962bc4bc4bbad2b23ab7c56b36b402aeb346fa0`
html-ids-head.json.gz	132 KB	`sha256:d9143c6e90f537dab0327bc49a884ccc52d7eaf69ac826c941bc30fb95dd85b9`