Module error
Source - ExecuteError
 - Error type.
 - InternalValidationError
 - Some internal error occurred.
 - PrepareError
 - An error that occurred during the prepare part of the PVF pipeline.
 
- PrecheckResult
 - Result of prechecking PVF performed by the validation host. Contains stats about the preparation
if successful.
 - PrepareResult
 - Result of PVF preparation propagated all the way back to the host, with path to the concluded
artifact and stats of the preparation if successful.
 - PrepareWorkerResult
 - Result of PVF preparation from a worker, with checksum of the compiled PVF and stats of the
preparation if successful.