{"ast_node_type":"variable","tokens":[{"end":87,"kind":"keyword","start":0,"text":"let"}]}
            let instantiated_pred = ty::EarlyBinder::bind(pred).instantiate(tcx, args);
            let has_region = pred.visit_with(&mut param_count).is_break();
            // Don't check non-defaulted params, dependent defaults (including lifetimes)