danger process isn't exiting the process with the same error code as the subprocess

I saw it "fail" a bunch, but actually pass. It even said "process exited with code '1'" or whatever.

Start by tracing how the Danger process handles the subprocess exit status and reproduce the reported case where code 1 is printed but the overall command passes. Done means the parent process exits with the same error code as the subprocess and the mismatch is covered by an appropriate test.

Written by the indexing model from the issue text.