{"ast_node_type":"other","tokens":[{"end":58,"kind":"keyword","start":0,"text":"tcx.any_free_region_meets(&upvar_ty,"}]}
                tcx.any_free_region_meets(&upvar_ty, |r| {
                debug!("get_upvar_index_for_region: upvar_ty={upvar_ty:?}");
                    let r = r.as_var();