{"ast_node_type":"other","tokens":[{"end":71,"kind":"keyword","start":0,"text":"spans.push_span_label(label_span,"}]}
            spans.push_span_label(label_span, "put a macro name here");
            let mut spans = MultiSpan::from_span(label_span);
            err.subdiagnostic(MaybeMissingMacroRulesName { spans });