{"ast_node_type":"variable","tokens":[{"end":67,"kind":"keyword","start":0,"text":"let"}]}
        let guar = cx.dcx().emit_err(errors::NonExhaustiveDefault {
    if let Some(non_exhaustive_attr) = attr::find_by_name(&variant.attrs, sym::non_exhaustive) {
            span: variant.ident.span,