Cygwin job is broken on "Set up virtualenv" step #2004
Description
The Cygwin CI test job is failing now, including when rerun at the tip of the main branch where it formerly passed. The failure occurs in the "Set up virtualenv" step, which runs python -m venv .venv. The log does not how a detailed error message, just:
Run python -m venv .venv
python -m venv .venv
echo 'BASH_ENV=.venv/bin/activate' >>"$GITHUB_ENV"
shell: C:\tools\cygwin\bin\bash.exe --login --norc -eo pipefail -o igncr "{0}"
env:
CHERE_INVOKING: 1
CYGWIN_NOWINPATH: 1
CYGWIN:
+ python -m venv .venv
Error: Command '['/cygdrive/d/a/GitPython/GitPython/.venv/bin/python', '-Im', 'ensurepip', '--upgrade', '--default-pip']' returned non-zero exit status 1.
Error: Process completed with exit code 1.
I first noticed this when checking the current status of #1988 (see #1988 (comment)), but it is not specific to that PR.
I do not know why this happens.