{"ast_node_type":"other","tokens":[{"end":89,"kind":"keyword","start":0,"text":"Ty::new_ref(self.tcx,"}]}
                            Ty::new_ref(self.tcx, *region, *t_type, mutability.invert());
                        let trait_type =
                        let msg = format!("you need `{trait_type}` instead of `{rcvr_ty}`");