{"ast_node_type":"other","tokens":[{"end":50,"kind":"keyword","start":0,"text":"self.check_compatible_stability(s.def_id);"}]}
        self.check_compatible_stability(s.def_id);
    fn visit_field_def(&mut self, s: &'tcx FieldDef<'tcx>) {
        self.check_missing_stability(s.def_id);