More meaningful messages in case of unexpected empty log file
More meaningful messages in case of unexpected empty log file


Former-commit-id: cf417ba4968a27239e604d00445d4b4aaed176cf [formerly d69d94c3c2bc719682681261c23857d189736306]
Former-commit-id: 23273d1154d4ec60f56e6e2be063e5969bec544e
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine