I’m also fighting with this…
I wonder how you solved it. You make very good questions, and suggestions, and I would love to know what changed from when you were having problems to having no problem anymore.
Did you pass the password with or without quotes?
Did you pass through stdin?
Here’s my test repo failing: https://travis-ci.com/github/gmagno/pycut/jobs/342784699#L257
Thanks,
gmagno