Fix clippy and remove borrows

Fix clippy lints and remove unneded borrows when logging or printing
macros.

src/posix/create.rs

@@ -40,7 +40,7 @@ impl Create {
         let mq = &mut posixmq::OpenOptions::readonly();
 
         if let Some(m) = &self.mode {
-            mq.mode(u32::from_str_radix(&m, 8)?);
+            mq.mode(u32::from_str_radix(m, 8)?);
         }
 
         mq.max_msg_len(self.msgsize.unwrap_or_else(msgsize_default))
@@ -53,10 +53,10 @@ impl Create {
             let attributes = mq.attributes()?;
 
             info!("Created message queue: {} with attributes msgsize: {}, capacity: {}, current_messages: {}",
-                     &self.queue,
-                     &attributes.max_msg_len,
-                     &attributes.capacity,
-                     &attributes.current_messages);
+                     self.queue,
+                     attributes.max_msg_len,
+                     attributes.capacity,
+                     attributes.current_messages);
         }
 
         Ok(())

src/posix/info.rs

@@ -16,7 +16,7 @@ impl Info {
 
         println!(
             "Message queue: {}, msg_max: {}, msgsize_max: {}, current_messages: {}",
-            &self.queue, &attrs.capacity, &attrs.max_msg_len, &attrs.current_messages
+            self.queue, attrs.capacity, attrs.max_msg_len, attrs.current_messages
         );
 
         Ok(())

src/posix/send.rs

@@ -38,24 +38,24 @@ impl Send {
         if let Some(timeout) = &self.timeout {
             mq.open(&self.queue)?.send_timeout(
                 self.priority,
-                &self.msg.as_bytes(),
+                self.msg.as_bytes(),
                 *timeout.parse::<Duration>()?,
             )?;
 
-            info!("Sent message: \"{}\" to queue: {}", &self.msg, &self.queue);
+            info!("Sent message: \"{}\" to queue: {}", self.msg, self.queue);
         } else if let Some(deadline) = &self.deadline {
             mq.open(&self.queue)?.send_deadline(
                 self.priority,
-                &self.msg.as_bytes(),
+                self.msg.as_bytes(),
                 DateTime::parse_from_str(deadline, "%Y-%m-%d %H:%M:%S")?.into(),
             )?;
 
-            info!("Sent message: \"{}\" to queue: {}", &self.msg, &self.queue);
+            info!("Sent message: \"{}\" to queue: {}", self.msg, self.queue);
         } else {
             mq.open(&self.queue)?
-                .send(self.priority, &self.msg.as_bytes())?;
+                .send(self.priority, self.msg.as_bytes())?;
 
-            info!("Sent message: \"{}\" to queue: {}", &self.msg, &self.queue);
+            info!("Sent message: \"{}\" to queue: {}", self.msg, self.queue);
         }
 
         Ok(())

src/posix/unlink.rs

@@ -14,7 +14,7 @@ impl Unlink {
     pub fn run(&self) -> Result<()> {
         posixmq::remove_queue(&self.queue)?;
 
-        info!("Removed message queue: {}", &self.queue);
+        info!("Removed message queue: {}", self.queue);
 
         Ok(())
     }

src/sysv/create.rs

@@ -19,7 +19,7 @@ impl Create {
         let mut mq = SysvMq::<String>::new();
 
         if let Some(m) = &self.mode {
-            mq.mode(i32::from_str_radix(&m, 8)?);
+            mq.mode(i32::from_str_radix(m, 8)?);
         }
 
         mq.create(self.key)?;

src/sysv/info.rs

@@ -28,7 +28,7 @@ impl Info {
     pub fn run(&self) -> Result<()> {
         let mut lines = BufReader::new(File::open("/proc/sysvipc/msg")?).lines();
 
-        print_line(&lines.nth(0).unwrap_or(Ok(String::new()))?);
+        print_line(&lines.next().unwrap_or_else(|| Ok(String::new()))?);
 
         for line in lines {
             let line = line?;