{"ast_node_type":"other","tokens":[{"end":61,"kind":"keyword","start":0,"text":"sess.dcx().emit_err(errors::MacroConstStability"}]}
            sess.dcx().emit_err(errors::MacroConstStability {
        if let Some(sp) = find_attr!(attrs, AttributeKind::ConstStability { span, .. } => *span) {
                span: sp,