{"ast_node_type":"other","tokens":[{"end":99,"kind":"keyword","start":0,"text":"#[expect(rustc::untranslatable_diagnostic,"}]}
    #[expect(rustc::untranslatable_diagnostic, reason = "diagnostic message is specified by user")]
    #[expect(rustc::diagnostic_outside_of_impl, reason = "diagnostic message is specified by user")]
    let guar = cx.dcx().span_err(sp, var.to_string());