minor: fix clippy (#344)

Author: isabelatkinson

src/operation/insert/test.rs

@@ -73,12 +73,10 @@ async fn build() {
 
     for (original_doc, cmd_doc) in fixtures.documents.iter().zip(cmd_docs.iter_mut()) {
         assert!(cmd_doc.get("_id").is_some());
-        if original_doc.get("_id").is_some() {
-            assert_eq!(original_doc, cmd_doc);
-        } else {
+        if original_doc.get("_id").is_none() {
             cmd_doc.remove("_id");
-            assert_eq!(original_doc, cmd_doc);
-        };
+        }
+        assert_eq!(original_doc, cmd_doc);
     }
 
     assert_eq!(

src/runtime/stream.rs

@@ -95,7 +95,7 @@ impl AsyncTcpStream {
         let conf = socket2::TcpKeepalive::new().with_time(KEEPALIVE_TIME);
         socket.set_tcp_keepalive(&conf)?;
 
-        let address: SockAddr = address.clone().into();
+        let address: SockAddr = (*address).into();
         if connect_timeout == Duration::from_secs(0) {
             socket.connect(&address)?;
         } else {

src/test/coll.rs

@@ -84,7 +84,7 @@ async fn insert_err_details() {
                     let result = doc.get_document("writeConcern");
                     match result {
                         Ok(write_concern_doc) => {
-                            assert_eq!(write_concern_doc.contains_key("provenance"), true);
+                            assert!(write_concern_doc.contains_key("provenance"));
                         }
                         Err(e) => panic!("{:?}", e),
                     }