{"ast_node_type":"other","tokens":[{"end":82,"kind":"keyword","start":0,"text":"self.insert_found(ty::OpaqueHiddenType::new_error(tcx,"}]}
                    self.insert_found(ty::OpaqueHiddenType::new_error(tcx, guar));
                if let Some(guar) = tables.tainted_by_errors {
                } else if let Some(&hidden_type) = tables.concrete_opaque_types.get(&self.def_id) {