{"ast_node_type":"other","tokens":[{"end":85,"kind":"keyword","start":0,"text":"debug!(\"relate_universal_regions:"}]}
        debug!("relate_universal_regions: fr_a={:?} outlives fr_b={:?}", fr_a, fr_b);
    fn relate_universal_regions(&mut self, fr_a: RegionVid, fr_b: RegionVid) {
        self.outlives.add(fr_a, fr_b);