Using non-existent environment does not fail #2858
Description
Issue
Using an environment that does not exist still executes without failure but does nothing useful.
Environment
Provide at least:
- OS: Linux
pip listof the host Python wheretoxis installed:
Package Version
------------- -------
cachetools 5.2.1
chardet 5.1.0
colorama 0.4.6
distlib 0.3.6
filelock 3.9.0
packaging 23.0
pip 22.3.1
platformdirs 2.6.2
pluggy 1.0.0
pyproject_api 1.4.0
setuptools 65.7.0
tomli 2.0.1
tox 4.2.8
virtualenv 20.17.1
wheel 0.38.4
Minimal example
If possible, provide a minimal reproducer for the issue:
tox run -e abcdefg