Intermittent failures setting up 3.11.0 on macos-11

[AlexWaygood]

Hi,

We've been getting intermittent failures over at typeshed over the last few days when trying to set up Python 3.11.0 on macos-11. The problems appear to have started when we pinned our Python version to "3.11.0" (previously it was just "3.11").

The output logged to the CI terminal is (click to expand):

Run actions/setup-python@v4
  with:
    python-version: 3.11.0
    cache: pip
    cache-dependency-path: requirements-tests.txt
    check-latest: false
    token: ***
    update-environment: true
  env:
    PIP_DISABLE_PIP_VERSION_CHECK: 1
    FORCE_COLOR: 1
    TERM: xterm-256color
Version 3.11.0 was not found in the local cache
Version 3.11.0 is available for downloading
Download from "https://github.com/actions/python-versions/releases/download/3.11.0-3328127706/python-3.11.0-darwin-x64.tar.gz"
Extract downloaded archive
/usr/bin/tar xz -C /Users/runner/work/_temp/0508e595-870b-447c-9f90-557debae33c8 -f /Users/runner/work/_temp/d37af55f-8fec-4bc9-9331-1f011c1da5ab
Execute installation script
Check if Python hostedtoolcache folder exist...
Deleting Python /Users/runner/hostedtoolcache/Python/3.11.1/x64
Install Python binaries from prebuilt package
installer: Package name is Python
installer: Upgrading at base path /
installer: The upgrade was successful.
Create hostedtoolcach symlinks (Required for the backward compatibility)
Create Python 3.11.0 folder
Create additional symlinks (Required for the UsePythonVersion Azure Pipelines task and the setup-python GitHub Action)
Error: ln: python311: File exists
Error: The process '/bin/bash' failed with exit code 1

Our workflow file is here. Examples of failing runs:

• https://github.com/python/typeshed/actions/runs/3721746816/jobs/6312109900
• https://github.com/python/typeshed/actions/runs/3720359533/jobs/6309784870
• https://github.com/python/typeshed/actions/runs/3703102727/jobs/6274149510

The error only seems to be raised some of the time. (Maybe around 50% of our 3.11/macOS runs at the moment?)

Any idea what's going on here?

Action version:
actions/setup-python@v4

Platform:

• Ubuntu
• macOS
• Windows

Runner type:

• Hosted
• Self-hosted

Tools version:
3.11.0

[MaksimZhukov]

Hello @AlexWaygood! Thanks for reporting this!
We will investigate the issue and come back to you as soon as we have any updates

[MaksimZhukov]

There was a problem with the Python 3.11.0 package. We rebuilt it, so you won't face the issue again.
I am closing the issue. Please contact us if you have any concerns.
Thanks!

[AlexWaygood]

Brilliant, thanks @MaksimZhukov!