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The permissions are actually right - the environment variables $PATH and $XDG_CONFIG_HOME (and possibly $HOME for some users?) are just pointing at the wrong directories (see actions/partner-runner-images#25, actions/partner-runner-images#27). They're working on fixing it.

If you need a temporary workaround for now, this is what I'm using. It's based off of actions/partner-runner-images#25 (comment), but adapted to fix both of the affected variables.

# Insert this at the beginning of the `steps` array:
    - name: Fix environment for ARM64 Linux runners (actions/partner-runner-images#25)
      run: for var in PATH XDG_CONFIG_HOME; do sed -Ee "s/^/${var}=/" -e 's/(runner)admin/\1/g' <<< "${!var}"; done | tee -a "$GITHUB_ENV"

$HOME actually seems to be right on mine, but if it's giving you problems too, you can just add it to the for loop.

This seems to have been fixed on GitHub's end now. The runner now gets the correct /home/runner paths in its environment instead of /home/runneradmin.

Thank you. It is green! 🎉

Took 5m ish vs 9m for the paid runner. 🧐

The other jobs were cancelled on purpose because they are irrelevant here.

What do you think, @Cadair ? Merge?

But yes