{"ast_node_type":"other","tokens":[{"end":55,"kind":"keyword","start":0,"text":"match"}]}
        match self.tcx.lookup_const_stability(def_id) {
    fn check_callee_stability(&mut self, def_id: DefId) {
            Some(hir::ConstStability { level: hir::StabilityLevel::Stable { .. }, .. }) => {