{"ast_node_type":"variable","tokens":[{"end":54,"kind":"keyword","start":0,"text":"let"}]}
    let [rhs] = &field.other_selflike_exprs[..] else {
fn get_field_equality_expr(cx: &ExtCtxt<'_>, field: &FieldInfo) -> P<Expr> {
        cx.dcx().span_bug(field.span, "not exactly 2 arguments in `derive(PartialEq)`");