More clippy fixin's.

src/messages/client_command.rs

@@ -97,7 +97,7 @@ impl Arbitrary for ClientConnectionCommand {
             ClientConnectionCommand::EstablishTCPPortBinding,
             ClientConnectionCommand::AssociateUDPPort,
         ];
-        g.choose(&options).unwrap().clone()
+        *g.choose(&options).unwrap()
     }
 }
 
@@ -164,8 +164,8 @@ fn short_write_fails_right() {
     let mut cursor = Cursor::new(&mut buffer as &mut [u8]);
     let result = task::block_on(cmd.write(&mut cursor));
     match result {
-        Ok(_) => assert!(false, "Mysteriously able to fit > 2 bytes in 2 bytes."),
+        Ok(_) => panic!("Mysteriously able to fit > 2 bytes in 2 bytes."),
         Err(SerializationError::IOError(x)) => assert_eq!(ErrorKind::WriteZero, x.kind()),
-        Err(e) => assert!(false, "Got the wrong error writing too much data: {}", e),
+        Err(e) => panic!("Got the wrong error writing too much data: {}", e),
     }
 }

src/messages/server_response.rs

@@ -200,8 +200,8 @@ fn short_write_fails_right() {
     let mut cursor = Cursor::new(&mut buffer as &mut [u8]);
     let result = task::block_on(cmd.write(&mut cursor));
     match result {
-        Ok(_) => assert!(false, "Mysteriously able to fit > 2 bytes in 2 bytes."),
+        Ok(_) => panic!("Mysteriously able to fit > 2 bytes in 2 bytes."),
         Err(SerializationError::IOError(x)) => assert_eq!(ErrorKind::WriteZero, x.kind()),
-        Err(e) => assert!(false, "Got the wrong error writing too much data: {}", e),
+        Err(e) => panic!("Got the wrong error writing too much data: {}", e),
     }
 }

src/messages/utils.rs

@@ -9,7 +9,7 @@ pub fn arbitrary_socks_string(g: &mut Gen) -> String {
         potential.truncate(255);
         let bytestring = potential.as_bytes();
 
-        if bytestring.len() > 0 && bytestring.len() < 256 {
+        if !bytestring.is_empty() && bytestring.len() < 256 {
             return potential;
         }
     }