1. Install Poetry 0.12.17
2. poetry config settings.virtualenvs.create false
3. Try to run something using poetry run. Observe that a message “Skipping virtualenv creation, as specified in config file.” is output to stdout.
4. Try poetry -q run, poetry run --quiet and other variations thereof. Observe that nothing is run and an exception is raised.

There should be a way to suppress all output other than that of the command being run. Otherwise it’s impossible to run scripts reliably.