{"ast_node_type":"other","tokens":[{"end":96,"kind":"keyword","start":0,"text":"outlives.0.as_region().is_none_or(|re|"}]}
            outlives.0.as_region().is_none_or(|re| re != outlives.1) && unique.insert(*outlives)
        external_constraints.region_constraints.retain(|outlives| {
        });