{"ast_node_type":"variable","tokens":[{"end":75,"kind":"keyword","start":0,"text":"let"}]}
        let region_vid = universal_regions.to_region_vid(drop_live_region);
    tcx.for_each_free_region(kind, |drop_live_region| {
        facts.drop_of_var_derefs_origin.push((local, region_vid.into()));