Error on Windows Self-hosted runner

[olivier-jourdan]

I get this error when I try to run the action on my self hosted runner (Windows Server 2019 Datacenter (1809))

It seems that a path is not formatted correctly, and I haven't any clue how to fix that.

Any idea?

[EnricoMi]

Is your repo public? Can you paste the workflow YAML here?

To me this looks like a general issue with your self-hosted runner as it does not seem to be able to execute any bash shell code. The runner puts the shell code into a temporary file any tells C:\Windows\system32\bash.EXE to execute it, but it does not properly escape the \ in the path of the temporary file.

Does the following action work on your self-hosted runner:

   - run: ls
     shell: bash

[EnricoMi]

Looks like your error: actions/runner#1328

[olivier-jourdan]

Thank you for your quick reply @EnricoMi

The repo is not public, unfortunately.

Before getting this error, I had clear errors saying my runner couldn't execute bash shell code. I guessed I fixed that. Not completely, apparently…
I'll test the action you said and keep you posted.

[olivier-jourdan]

Same error…

Run ls
  ls
  shell: C:\Windows\system32\bash.EXE --noprofile --norc -e -o pipefail {0}
/bin/bash: C:actions-runner_work_temp9928f894-24aa-42cc-b75c-7cc78ff93ccc.sh: No such file or directory

Bash is installed on my runner. I can execute it from powershell.

I'm missing something, but it's clearly not a bug on your side.
Thanks for your help. I'll try to figure out what's wrong and keep you posted for the record.

[EnricoMi]

Let me close this issue then but please report back when you know what the problem and fix is.

[EnricoMi]

I have recently used a self-hosted Windows runner myself. I have installed Git BASH, added the location of bash.exe to PATH and used that shell with my action. This handled the backslashes in the path just fine.

What bash did you use? How did you install C:\Windows\system32\bash.EXE?

[EnricoMi]

@olivier-jourdan do you remember how you installed C:\Windows\system32\bash.EXE on your self-hosted WIndows runner?