Fatal error - cygheap base mismatch detected (Git)

[H0R5E]

Hi, I am getting sporadic failures running conda with the setup-miniconda action on Windows runners. The installation step goes OK, but when I call conda info, to verify the installation, Actions wigs out with the following message:

0 [main] dirname (4404) C:\Miniconda\envs\_snld3d\Library\usr\bin\dirname.exe: *** fatal error - cygheap base mismatch detected - 0x18034B408/0x180349408.
This problem is probably due to using incompatible versions of the cygwin DLL.
Search for cygwin1.dll using the Windows Start->Find/Search facility
and delete all but the most recent version.  The most recent version *should*
reside in x:\cygwin\bin, where 'x' is the drive on which you have
installed the cygwin distribution.  Rebooting is also suggested if you
are unable to find another cygwin DLL.
Error: Process completed with exit code 127

The failed job is here and the associated workflow is here. The problem is not unique to this workflow.

Many thanks,

Mat

[goanpeca]

Hi @H0R5E, thanks for the report.

We will take a look at it, but being sporadic, makes it hard to debug :-\

---

Have you seen this before @jaimergp ?

[H0R5E]

@goanpeca, thanks for getting back to me. I've done a little more investigation and it seems to be specific to the environment I am trying to recreate. I have created a dedicated test repo here and the failure seems to be generated by something in the enviroment.yaml file.

Do you have any clue which package might be triggering this? If not I will forensically remove things until it works, I guess. 😮

[H0R5E]

OK, it actually didn't take me too long to find. It's Git. Specifically,

git                       2.35.3               h57928b3_0    conda-forge

Do you think this is an upstream issue?

EDIT: Possibly related: actions/runner-images#594

[H0R5E]

Closing, as the problem seems to have resolved itself.