{"ast_node_type":"other","tokens":[{"end":62,"kind":"keyword","start":0,"text":"if"}]}
        if !self.tcx.sess.opts.unstable_opts.query_dep_graph {
    fn check_rustc_dirty_clean(&self, attr: &Attribute) {
            self.dcx().emit_err(errors::RustcDirtyClean { span: attr.span() });