styles: Make xuanwo happy (#524)

* styles: Make xuanwo happy

Signed-off-by: Xuanwo <[email protected]>

* make xuanwo happy

Signed-off-by: Xuanwo <[email protected]>

* Fix unit test

Signed-off-by: Xuanwo <[email protected]>

* Make import verbose

Signed-off-by: Xuanwo <[email protected]>

Signed-off-by: Xuanwo <[email protected]>

Author: Xuanwo

src/layers/tracing.rs

@@ -12,14 +12,27 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-use crate::ops::*;
-use crate::{
-    Accessor, AccessorMetadata, BytesReader, BytesWriter, DirStreamer, Layer, ObjectMetadata,
-};
-use async_trait::async_trait;
 use std::io::Result;
 use std::sync::Arc;
 
+use async_trait::async_trait;
+
+use crate::ops::OpCreate;
+use crate::ops::OpDelete;
+use crate::ops::OpList;
+use crate::ops::OpPresign;
+use crate::ops::OpRead;
+use crate::ops::OpStat;
+use crate::ops::OpWrite;
+use crate::ops::PresignedRequest;
+use crate::Accessor;
+use crate::AccessorMetadata;
+use crate::BytesReader;
+use crate::BytesWriter;
+use crate::DirStreamer;
+use crate::Layer;
+use crate::ObjectMetadata;
+
 /// TracingLayer will add tracing for OpenDAL.
 ///
 /// # Examples