{"ast_node_type":"variable","tokens":[{"end":75,"kind":"keyword","start":0,"text":"let"}]}
                let length = self.lower_const_arg(length, FeedConstTy::No);
            hir::TyKind::Array(ty, length) => {
                Ty::new_array_with_const_len(tcx, self.lower_ty(ty), length)