{"ast_node_type":"variable","tokens":[{"end":89,"kind":"keyword","start":0,"text":"let"}]}
                let ty::Dynamic(receiver_trait, _, ty::Dyn) = receiver_tail.kind() else {
                    self.tcx.struct_tail_for_codegen(receiver_place.layout.ty, self.typing_env);
                    span_bug!(self.cur_span(), "dynamic call on non-`dyn` type {}", receiver_tail)