fmt tests

Author: zachs18

Diff for: library/std/src/sync/mutex/tests.rs

@@ -1,6 +1,6 @@
 use crate::sync::atomic::{AtomicUsize, Ordering};
 use crate::sync::mpsc::channel;
-use crate::sync::{Arc, Condvar, Mutex, MutexGuard, MappedMutexGuard};
+use crate::sync::{Arc, Condvar, MappedMutexGuard, Mutex, MutexGuard};
 use crate::thread;
 
 struct Packet<T>(Arc<(Mutex<T>, Condvar)>);
@@ -252,7 +252,6 @@ fn test_mutex_unsized() {
     assert_eq!(&*mutex.lock().unwrap(), comp);
 }
 
-
 #[test]
 fn test_mapping_mapped_guard() {
     let arr = [0; 4];

Diff for: library/std/src/sync/rwlock/tests.rs

@@ -1,6 +1,9 @@
 use crate::sync::atomic::{AtomicUsize, Ordering};
 use crate::sync::mpsc::channel;
-use crate::sync::{Arc, RwLock, RwLockReadGuard, RwLockWriteGuard, MappedRwLockReadGuard, MappedRwLockWriteGuard, TryLockError};
+use crate::sync::{
+    Arc, MappedRwLockReadGuard, MappedRwLockWriteGuard, RwLock, RwLockReadGuard, RwLockWriteGuard,
+    TryLockError,
+};
 use crate::thread;
 use rand::Rng;