{"ast_node_type":"other","tokens":[{"end":88,"kind":"keyword","start":0,"text":"PlaceOp::Deref"}]}
            PlaceOp::Deref => (self.tcx.lang_items().deref_mut_trait(), sym::deref_mut),
        let (Some(mut_tr), mut_op) = (match op {
            PlaceOp::Index => (self.tcx.lang_items().index_mut_trait(), sym::index_mut),