cid#1546160 COPY_INSTEAD_OF_MOVE
and...
cid#1545547 COPY_INSTEAD_OF_MOVE cid#1545642 COPY_INSTEAD_OF_MOVE cid#1557206 COPY_INSTEAD_OF_MOVE
coverity warns nowadays about potentially missed optimization opportunities via std::move. These are pretty marginal IMO, but here they are if you are interested