Sops version: 3.7.1 (Installed from deb package)

How to reproduce:

1. create example.yaml using one KMS and one PGP key
2. turn off your aws profile / credentials
3. try to rotate the file in place: sops -r -i example.yaml

What happens:

1. example.yaml file gets truncated to zero bytes!
2. sops prints no error messages
3. sops returns exit code zero as if everything was ok

What I would like to happen:

1. sops detects that not all master keys are available
2. sops prints error message: you cannot rotate because you are missing key X
3. sops exits with non-zero code.