{"ast_node_type":"variable","tokens":[{"end":95,"kind":"keyword","start":0,"text":"let"}]}
            let _prof_timer = self.infcx.tcx.prof.generic_activity("polonius_fact_generation");
        if let Some(polonius_facts) = polonius_facts {
            if let Some(borrow_index) = borrow_set.get_index_of(&location) {