{"ast_node_type":"other","tokens":[{"end":53,"kind":"keyword","start":0,"text":"debug!(\"non_local_upper_bound(fr={:?})\","}]}
        debug!("non_local_upper_bound(fr={:?})", fr);
    pub(crate) fn non_local_upper_bounds(&self, fr: RegionVid) -> Vec<RegionVid> {
        let res = self.non_local_bounds(&self.inverse_outlives, fr);