{"ast_node_type":"variable","tokens":[{"end":71,"kind":"keyword","start":0,"text":"let"}]}
        let Some(min_choice) = totally_ordered_subset.reduce(|r1, r2| {
        // Now we're left with `['static, 'c]`. Pick `'c` as the minimum!
            let r1_outlives_r2 = self.universal_region_relations.outlives(r1, r2);