{"ast_node_type":"other","tokens":[{"end":98,"kind":"keyword","start":0,"text":"UnordSet::from(new_features).to_sorted_stable_ord().iter().map(|&&s|"}]}
                UnordSet::from(new_features).to_sorted_stable_ord().iter().map(|&&s| (enable, s)),
            rust_features.extend(
            );