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


Former-commit-id: 6197473a4e79a145e28e6e8af11f665fc9f5f60c [formerly 6197473a4e79a145e28e6e8af11f665fc9f5f60c [formerly bc9ef6bf3cadc98b22932eccc1bb3b43d6979f99]]
Former-commit-id: cc13b2e51fc86fba17456b8deb893c34bff8af9b
Former-commit-id: e8c5056ccd75e267ff08d2983a2303f97aed33f2
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine