Removed more warnings [skip CI]
Removed more warnings [skip CI]


Former-commit-id: 6197473a4e79a145e28e6e8af11f665fc9f5f60c [formerly bc9ef6bf3cadc98b22932eccc1bb3b43d6979f99]
Former-commit-id: cc13b2e51fc86fba17456b8deb893c34bff8af9b
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine