Format with rustfmt

Author: taiki-e

tests/barrier.rs

@@ -2,7 +2,7 @@ use std::sync::Arc;
 use std::thread;
 
 use async_lock::Barrier;
-use futures_lite::future; 
+use futures_lite::future;
 
 #[test]
 fn smoke() {

tests/mutex.rs

@@ -1,7 +1,7 @@
 #[cfg(not(target_arch = "wasm32"))]
-use std::thread;
-#[cfg(not(target_arch = "wasm32"))]
 use std::sync::Arc;
+#[cfg(not(target_arch = "wasm32"))]
+use std::thread;
 
 use async_lock::Mutex;
 use futures_lite::future;