Apply changes from rustfmt bump

Author: Mark-Simulacrum

library/std/src/lib.rs

@@ -585,7 +585,7 @@ mod backtrace_rs;
 #[stable(feature = "rust1", since = "1.0.0")]
 #[allow(deprecated, deprecated_in_future)]
 pub use core::{
-    assert_eq, assert_ne, debug_assert, debug_assert_eq, debug_assert_ne, matches, r#try, todo,
+    assert_eq, assert_ne, debug_assert, debug_assert_eq, debug_assert_ne, matches, todo, r#try,
     unimplemented, unreachable, write, writeln,
 };