{"ast_node_type":"variable","tokens":[{"end":53,"kind":"keyword","start":0,"text":"let"}]}
    let [state_expr] = substr.nonselflike_args else {
fn hash_substructure(cx: &ExtCtxt<'_>, trait_span: Span, substr: &Substructure<'_>) -> BlockOrExpr {
        cx.dcx().span_bug(trait_span, "incorrect number of arguments in `derive(Hash)`");