{"ast_node_type":"other","tokens":[{"end":46,"kind":"keyword","start":0,"text":"//"}]}
            // before, which is also an error.
            // ownership of the (borrowed) String or else you'd take ownership of b, as in 2018 and
            hir::CaptureBy::Value { .. } if !place.deref_tys().any(Ty::is_ref) => {