{"ast_node_type":"other","tokens":[{"end":102,"kind":"keyword","start":0,"text":"ty::Int(_)"}]}
            ty::Int(_) | ty::Uint(_) | ty::Float(_) | ty::RawPtr(_, _) => (), // struct([u8; 4]) is ok
            ty::Param(_) => (), // pass struct<T>([T; 4]) through, let monomorphization catch errors
            _ => {