Sort features alphabetically

Author: JohnTitor

compiler/rustc_data_structures/src/lib.rs

@@ -7,28 +7,28 @@
 //! This API is completely unstable and subject to change.
 
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
+#![feature(allow_internal_unstable)]
 #![feature(array_windows)]
+#![feature(associated_type_bounds)]
+#![feature(auto_traits)]
+#![feature(bool_to_option)]
+#![feature(const_panic)]
 #![feature(control_flow_enum)]
+#![feature(core_intrinsics)]
+#![feature(extend_one)]
+#![feature(hash_raw_entry)]
 #![feature(in_band_lifetimes)]
+#![feature(iter_map_while)]
+#![feature(maybe_uninit_uninit_array)]
 #![feature(min_specialization)]
-#![feature(auto_traits)]
+#![feature(min_type_alias_impl_trait)]
+#![feature(new_uninit)]
 #![feature(nll)]
-#![feature(allow_internal_unstable)]
-#![feature(hash_raw_entry)]
-#![feature(core_intrinsics)]
+#![feature(once_cell)]
 #![feature(test)]
-#![feature(associated_type_bounds)]
 #![feature(thread_id_value)]
-#![feature(extend_one)]
-#![feature(const_panic)]
-#![feature(new_uninit)]
-#![feature(once_cell)]
-#![feature(maybe_uninit_uninit_array)]
-#![feature(min_type_alias_impl_trait)]
 #![allow(rustc::default_hash_types)]
 #![deny(unaligned_references)]
-#![feature(iter_map_while)]
-#![feature(bool_to_option)]
 
 #[macro_use]
 extern crate tracing;