{"ast_node_type":"variable","tokens":[{"end":56,"kind":"keyword","start":0,"text":"let"}]}
    let (field_count, variant, down) = match ty.kind() {
    // We go to `usize` as we cannot allocate anything bigger anyway.
        ty::Array(_, len) => (len.try_to_target_usize(tcx)? as usize, None, op),