Python 3.12.4: Extract downloaded archive; gzip: stdin: not in gzip format

[frenck]

Description:
A clear and concise description of what the bug is.

https://github.com/home-assistant/core/actions/runs/9442844577/job/26006478894?pr=119255

Action version:
Specify the action version

actions/setup-python@v5.1.0

Platform:

• Ubuntu
• macOS
• Windows

Runner type:

• Hosted
• Self-hosted

Tools version:

3.12 (resulting in 3.12.4 right now)

Repro steps:
A description with steps to reproduce the issue. If your have a public example or repo to share, please provide the link.

      - name: Set up Python ${{ env.DEFAULT_PYTHON }}
        id: python
        uses: actions/setup-python@v5.1.0
        with:
          python-version: ${{ env.DEFAULT_PYTHON }}
          check-latest: true

https://github.com/home-assistant/core/blob/159503b8d37fbc46a353287416a640ad07c2cced/.github/workflows/ci.yaml#L230-L235

Expected behavior:
A description of what you expected to happen.

Actual behavior:
A description of what is actually happening.

[hugovk]

Same thing with 3.13.0b2:

Run actions/setup-python@v5
Installed versions
  Version ~3.13.0-0 was not found in the local cache
  Version ~3.13.0-0 is available for downloading
  Download from "https://github.com/actions/python-versions/releases/download/3.13.0-beta.2-9442465578/python-3.13.0-beta.2-linux-22.04-x64.tar.gz"
  Extract downloaded archive
  /usr/bin/tar xz --warning=no-unknown-keyword --overwrite -C /home/runner/work/_temp/ce7441c9-c7c3-405b-8d85-f47fd5f8a722 -f /home/runner/work/_temp/8c32cd5a-e1e8-4874-ac7a-a0c200b8ba14
  
  gzip: stdin: not in gzip format
  /usr/bin/tar: Child returned status 1
  /usr/bin/tar: Error is not recoverable: exiting now
  Error: The process '/usr/bin/tar' failed with exit code 2

https://github.com/pypa/pip/actions/runs/9443536250/job/26007467646

Both 3.12.4 and 3.13.0-beta.2 were released on https://github.com/actions/python-versions a couple of hours ago:

• https://github.com/actions/python-versions/releases/tag/3.12.4-9442300799
• https://github.com/actions/python-versions/releases/tag/3.13.0-beta.2-9442465578

[Foxboron]

Seems like the header is incorrect?

λ Downloads » xxd python-3.12.4-linux-22.04-x64.tar.gz | less | head -1
00000000: 1fef bfbd 0800 0000 0000 0003 efbf bd3c  ...............<

1fef isn't a valid magic number for gzip (file is unaware of anything using it) so I'm not sure if this is a weird case of bitflip? Rest of the header seems fine.

[AGulev]

the same with macos and win archives :

  Version 3.12 was not found in the local cache
  Version 3.12 is available for downloading
  Download from "https://github.com/actions/python-versions/releases/download/3.12.4-9442300799/python-3.12.4-darwin-x64.tar.gz"
  Extract downloaded archive
  /usr/bin/tar xz -C /Users/runner/work/_temp/f2bc8ae4-bdba-46b8-823a-bd909c45dd1b -f /Users/runner/work/_temp/623e67b2-44e6-4a3d-8516-abe6e9d12231
  tar: Error opening archive: Unrecognized archive format
  Error: The process '/usr/bin/tar' failed with exit code 1

[firewave]

Seems like the header is incorrect?

The file is completely garbled. It mostly consists of ef bf bd patterns.