diff --git a/src/messages.rs b/src/messages.rs
index 86036a9..3b0e4ca 100644
--- a/src/messages.rs
+++ b/src/messages.rs
@@ -279,7 +279,7 @@ where
 {
     let password = md5_hash_password(user, password, salt);
 
-    let mut message = BytesMut::with_capacity(password.len() + 5);
+    let mut message = BytesMut::with_capacity(password.len() as usize + 5);
 
     message.put_u8(b'p');
     message.put_i32(password.len() as i32 + 4);
@@ -293,7 +293,7 @@ where
     S: tokio::io::AsyncWrite + std::marker::Unpin,
 {
     let password = md5_hash_second_pass(hash, salt);
-    let mut message = BytesMut::with_capacity(password.len() + 5);
+    let mut message = BytesMut::with_capacity(password.len() as usize + 5);
 
     message.put_u8(b'p');
     message.put_i32(password.len() as i32 + 4);
diff --git a/src/mirrors.rs b/src/mirrors.rs
index f704a8c..7d325a1 100644
--- a/src/mirrors.rs
+++ b/src/mirrors.rs
@@ -137,8 +137,8 @@ impl MirroringManager {
                 bytes_rx,
                 disconnect_rx: exit_rx,
             };
-            exit_senders.push(exit_tx);
-            byte_senders.push(bytes_tx);
+            exit_senders.push(exit_tx.clone());
+            byte_senders.push(bytes_tx.clone());
             client.start();
         });
 
diff --git a/src/pool.rs b/src/pool.rs
index 736dc1a..bc04c5c 100644
--- a/src/pool.rs
+++ b/src/pool.rs
@@ -1041,7 +1041,7 @@ impl ServerPool {
     ) -> ServerPool {
         ServerPool {
             address,
-            user,
+            user: user.clone(),
             database: database.to_string(),
             client_server_map,
             auth_hash,
diff --git a/src/query_router.rs b/src/query_router.rs
index 8b451dd..3357fce 100644
--- a/src/query_router.rs
+++ b/src/query_router.rs
@@ -1476,7 +1476,7 @@ mod test {
         };
 
         let mut qr = QueryRouter::new();
-        qr.update_pool_settings(pool_settings);
+        qr.update_pool_settings(pool_settings.clone());
 
         // Shard should start out unset
         assert_eq!(qr.active_shard, None);