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gh-153062: Fix a crash iterating itertools.tee on the free-threaded build #200850

gh-153062: Fix a crash iterating itertools.tee on the free-threaded build

gh-153062: Fix a crash iterating itertools.tee on the free-threaded build #200850

Triggered via pull request July 10, 2026 01:58
Status Cancelled
Total duration 2m 4s
Artifacts 1

build.yml

on: pull_request
Change detection  /  Create context from changed files
14s
Change detection / Create context from changed files
Matrix: Address sanitizer
Matrix: build-macos
Matrix: build-san
Matrix: Ubuntu SSL tests
Matrix: build-ubuntu
Matrix: build-windows-msi
Waiting for pending jobs
Matrix: build-windows
Matrix: cifuzz
Docs  /  Doctest
57s
Docs / Doctest
Docs  /  Check EPUB
1m 6s
Docs / Check EPUB
Check if Autoconf files are up to date
24s
Check if Autoconf files are up to date
Check if generated files are up to date
1m 6s
Check if generated files are up to date
C API Docs  /  Check if all C APIs are documented
10s
C API Docs / Check if all C APIs are documented
iOS
1m 8s
iOS
Emscripten  /  build and test
58s
Emscripten / build and test
WASI  /  build and test
1m 2s
WASI / build and test
Hypothesis tests on Ubuntu
55s
Hypothesis tests on Ubuntu
Sanitizers  /  TSan (free-threading)
1m 6s
Sanitizers / TSan (free-threading)
Cross build Linux
1m 7s
Cross build Linux
Matrix: build-android
Docs  /  ...  /  Check for removed HTML IDs
Docs / Check for removed HTML IDs / Check for removed HTML IDs
All required checks pass
5s
All required checks pass
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106 errors and 5 warnings
Ubuntu SSL tests (ubuntu-26.04, aws-lc, 5.0.0)
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Ubuntu SSL tests (ubuntu-26.04, aws-lc, 5.0.0)
The operation was canceled.
Hypothesis tests on Ubuntu
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Hypothesis tests on Ubuntu
The operation was canceled.
Ubuntu SSL tests (ubuntu-26.04, openssl, 3.4.6)
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Ubuntu SSL tests (ubuntu-26.04, openssl, 3.4.6)
The operation was canceled.
CIFuzz / cpython3 (undefined)
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
CIFuzz / cpython3 (undefined)
The operation was canceled.
CIFuzz / cpython3 (memory)
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
CIFuzz / cpython3 (memory)
The operation was canceled.
CIFuzz / cpython3 (address)
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
CIFuzz / cpython3 (address)
The operation was canceled.
Ubuntu SSL tests (ubuntu-26.04, openssl, 3.0.21)
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Ubuntu SSL tests (ubuntu-26.04, openssl, 3.0.21)
The operation was canceled.
Ubuntu (bolt) / build and test (ubuntu-26.04)
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Ubuntu (free-threading) / build and test (ubuntu-26.04-arm)
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Ubuntu (bolt) / build and test (ubuntu-26.04)
The operation was canceled.
Ubuntu (free-threading) / build and test (ubuntu-26.04-arm)
The operation was canceled.
Docs / Doctest
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Docs / Doctest
The operation was canceled.
Ubuntu SSL tests (ubuntu-26.04, openssl, 3.6.3)
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Ubuntu SSL tests (ubuntu-26.04, openssl, 3.6.3)
The operation was canceled.
Emscripten / build and test
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Emscripten / build and test
The operation was canceled.
Ubuntu SSL tests (ubuntu-26.04, openssl, 1.1.1w)
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Ubuntu SSL tests (ubuntu-26.04, openssl, 1.1.1w)
The operation was canceled.
Ubuntu (free-threading) / build and test (ubuntu-26.04)
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Ubuntu (free-threading) / build and test (ubuntu-26.04)
The operation was canceled.
Check if generated files are up to date
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Check if generated files are up to date
The operation was canceled.
WASI / build and test
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
WASI / build and test
The operation was canceled.
Sanitizers / TSan (free-threading)
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Sanitizers / TSan (free-threading)
The operation was canceled.
Ubuntu SSL tests (ubuntu-26.04, openssl, 3.5.7)
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Ubuntu SSL tests (ubuntu-26.04, openssl, 3.5.7)
The operation was canceled.
Docs / Docs
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Docs / Docs
The operation was canceled.
Address sanitizer (ubuntu-26.04)
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Address sanitizer (ubuntu-26.04)
The operation was canceled.
Cross build Linux
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Cross build Linux
The operation was canceled.
Sanitizers / TSan
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Docs / Check EPUB
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Sanitizers / TSan
The operation was canceled.
Docs / Check EPUB
The operation was canceled.
Windows / Build and test (x64, switch-case)
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Windows / Build and test (x64, switch-case)
The operation was canceled.
Ubuntu / build and test (ubuntu-26.04-arm)
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Ubuntu / build and test (ubuntu-26.04-arm)
The operation was canceled.
Android (x86_64)
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Android (x86_64)
The operation was canceled.
iOS
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
iOS
The operation was canceled.
Windows (free-threading) / Build and test (x64, switch-case)
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Windows (free-threading) / Build and test (x64, switch-case)
The operation was canceled.
Ubuntu SSL tests (ubuntu-26.04, openssl, 4.0.1)
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Ubuntu SSL tests (ubuntu-26.04, openssl, 4.0.1)
The operation was canceled.
Windows (free-threading) / Build and test (x64, tail-call)
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Windows (free-threading) / Build and test (x64, tail-call)
The operation was canceled.
Windows / Build and test (Win32, switch-case)
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Windows / Build and test (Win32, switch-case)
The operation was canceled.
macOS / build and test (macos-26)
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
macOS / build and test (macos-26)
The operation was canceled.
macOS (free-threading) / build and test (macos-26)
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
macOS (free-threading) / build and test (macos-26)
The operation was canceled.
Sanitizers / UBSan
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Sanitizers / UBSan
The operation was canceled.
Android (aarch64)
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Android (aarch64)
The operation was canceled.
macOS / build and test (macos-26-intel)
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
macOS / build and test (macos-26-intel)
The operation was canceled.
Windows / Build and test (arm64, switch-case)
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Windows / Build and test (arm64, switch-case)
The operation was canceled.
Windows / Build and test (x64, tail-call)
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Windows / Build and test (x64, tail-call)
The operation was canceled.
Windows (free-threading) / Build and test (arm64, switch-case)
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Windows (free-threading) / Build and test (arm64, switch-case)
The operation was canceled.
Ubuntu / build and test (ubuntu-26.04)
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Ubuntu / build and test (ubuntu-26.04)
The operation was canceled.
All required checks pass
Process completed with exit code 1.
Tests
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Tests
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Tests
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Tests
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Tests
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Tests
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Tests
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Tests
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Tests
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Tests
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Tests
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Tests
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Tests
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Tests
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Tests
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Tests
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Tests
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Tests
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Tests
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Tests
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Tests
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Tests
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Tests
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Tests
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
Tests
Canceling since a higher priority waiting request for Tests-nascheme-tee-next-ft-crash exists
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)
`$HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK` is set: not checking for outdated dependents or dependents with broken linkage!
macOS / build and test (macos-26)
The following taps are not trusted: aws/tap Homebrew is currently ignoring formulae, casks and commands from these taps because tap trust is required. Untap them with: brew untap aws/tap Trust specific formulae, casks and commands with: brew trust --formula <user>/<tap>/<formula> brew trust --cask <user>/<tap>/<cask> brew trust --command <user>/<tap>/<command> Whole-tap trust is broader and includes all current and future formulae, casks and commands from the listed taps. Trust whole taps with: brew trust aws/tap To disable trust checks: export HOMEBREW_NO_REQUIRE_TAP_TRUST=1 This is not recommended and will be removed in a later release. For more information, see: https://docs.brew.sh/Tap-Trust
macOS (free-threading) / build and test (macos-26)
`$HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK` is set: not checking for outdated dependents or dependents with broken linkage!
macOS (free-threading) / build and test (macos-26)
The following taps are not trusted: aws/tap Homebrew is currently ignoring formulae, casks and commands from these taps because tap trust is required. Untap them with: brew untap aws/tap Trust specific formulae, casks and commands with: brew trust --formula <user>/<tap>/<formula> brew trust --cask <user>/<tap>/<cask> brew trust --command <user>/<tap>/<command> Whole-tap trust is broader and includes all current and future formulae, casks and commands from the listed taps. Trust whole taps with: brew trust aws/tap To disable trust checks: export HOMEBREW_NO_REQUIRE_TAP_TRUST=1 This is not recommended and will be removed in a later release. For more information, see: https://docs.brew.sh/Tap-Trust

Artifacts

Produced during runtime
Name Size Digest
UBSan-logs-default
365 Bytes
sha256:566457b8476a2ae00b085642a77afa7c0ad79c32b3f811af4f50e507e080e959