Is this a warning that’s printed, or an error? Can you share a link to the build webpage please? If you don’t want to share it here you can email it to support@circleci.com and link to this ticket please.
Thanks for the help. However, I doubt that for several reasons:
1: the same exact script was working and producing our builds before today,
2: the same script still works fine on Linux (Docker) runners, and
3: the warning shows up at random throughout the execution of the script.