Assume all exceptions that reach handler are unrecoverable for now.
Assume all exceptions that reach handler are unrecoverable for now.

- Do not requeue messages that produce an exception.
- Does not ensure result is updated with a failure status.
- Changes error message; should be on a single line.

USGS-EROS/lcmap-pyccd-worker,USGS-EROS/lcmap-pyccd-worker