{"ast_node_type":"variable","tokens":[{"end":36,"kind":"keyword","start":0,"text":"let"}]}
        let inferred_outlives_iter =
        debug!("predicates_of: inferred_outlives_of({:?}) = {:?}", def_id, inferred_outlives,);
            inferred_outlives.iter().map(|(clause, span)| ((*clause).upcast(tcx), *span));