{"ast_node_type":"other","tokens":[{"end":66,"kind":"keyword","start":0,"text":"warn_on_duplicate_attribute(ecx,"}]}
    warn_on_duplicate_attribute(ecx, &annotatable, sym::cfg_eval);
    check_builtin_macro_attribute(ecx, meta_item, sym::cfg_eval);
    vec![cfg_eval(ecx.sess, ecx.ecfg.features, annotatable, ecx.current_expansion.lint_node_id)]