{"ast_node_type":"variable","tokens":[{"end":59,"kind":"keyword","start":0,"text":"let"}]}
            let ftys = self.resolve(ftys.clone(), &hir_id);
            let hir_id = HirId { owner: common_hir_owner, local_id };
            self.typeck_results.fru_field_types_mut().insert(hir_id, ftys);