{"ast_node_type":"variable","tokens":[{"end":72,"kind":"keyword","start":0,"text":"let"}]}
            let item_bounds = tcx.explicit_implied_const_bounds(def_id);
        if self.tcx.is_conditionally_const(def_id) {
            for (predicate, _) in item_bounds.iter_instantiated_copied(tcx, args) {