Fixes zero rate in ruptures
Fixes zero rate in ruptures


Former-commit-id: 0b08250f6e9126a6c47ee9b5b12a2719245e1142 [formerly 9fbf1fd9c4f96b6d8858e47c65398c4c0bf5bd4e]
Former-commit-id: c803824772443b9619e6c14465a5b6aa13a05121
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine