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