pickles returns non-zero exit code on success or without error messages

[boc-tothefuture]

Trying to use pickles as part of a build and observed that github actions would say the command failed but I would have no output indicating why it failed.

I was able to replicate the problem on my system as well

c:\temp\openhab\openhab-jruby>pickles -f features -o pickles --df html
c:\temp\openhab\openhab-jruby>echo %errorlevel%
1

This makes it difficult to use within a CI/CD pipeline.