{"ast_node_type":"other","tokens":[{"end":44,"kind":"keyword","start":0,"text":"debug!(\"predicate"}]}
        debug!("predicate = {predicate:?}");
        let predicate = explicit_predicates.rebind(*outlives_predicate).instantiate(tcx, args);
        insert_outlives_predicate(tcx, predicate.0, predicate.1, span, required_predicates);