{"ast_node_type":"variable","tokens":[{"end":97,"kind":"keyword","start":0,"text":"let"}]}
                            let ident = self.tcx.adjust_ident(f.ident(self.tcx), variant.def_id);
                                .normalize(expr.span, self.field_ty(base_expr.span, f, fresh_args));
                            if let Some(_) = remaining_fields.remove(&ident) {