Fix some clippy warnings.

src/audio_file.rs

@@ -70,10 +70,11 @@ impl AudioFileLoading {
 
         let (seek_tx, seek_rx) = mpsc::channel();
 
-        let _shared = shared.clone();
-        let _session = session.clone();
-
-        thread::spawn(move || AudioFileLoading::fetch(&_session, _shared, write_file, seek_rx));
+        {
+            let shared = shared.clone();
+            let session = session.clone();
+            thread::spawn(move || AudioFileLoading::fetch(&session, shared, write_file, seek_rx));
+        }
 
         AudioFileLoading {
             read_file: read_file,

src/audio_key.rs

@@ -36,6 +36,21 @@ impl AudioKeyManager {
         }
     }
 
+    fn send_key_request(&mut self, session: &Session, track: SpotifyId, file: FileId) -> u32 {
+        let seq = self.next_seq;
+        self.next_seq += 1;
+
+        let mut data: Vec<u8> = Vec::new();
+        data.write(&file.0).unwrap();
+        data.write(&track.to_raw()).unwrap();
+        data.write_u32::<BigEndian>(seq).unwrap();
+        data.write_u16::<BigEndian>(0x0000).unwrap();
+
+        session.send_packet(0xc, &data).unwrap();
+
+        seq
+    }
+
     pub fn request(&mut self,
                    session: &Session,
                    track: SpotifyId,
@@ -57,17 +72,7 @@ impl AudioKeyManager {
                 }
             })
             .unwrap_or_else(|| {
-                let seq = self.next_seq;
-                self.next_seq += 1;
-
-                let mut data: Vec<u8> = Vec::new();
-                data.write(&file.0).unwrap();
-                data.write(&track.to_raw()).unwrap();
-                data.write_u32::<BigEndian>(seq).unwrap();
-                data.write_u16::<BigEndian>(0x0000).unwrap();
-
-                session.send_packet(0xc, &data).unwrap();
-
+                let seq = self.send_key_request(session, track, file);
                 self.pending.insert(seq, id.clone());
 
                 let (tx, rx) = eventual::Future::pair();

src/authentication.rs

@@ -75,7 +75,7 @@ impl Session {
                 let welcome_data: protocol::authentication::APWelcome =
                     protobuf::parse_from_bytes(&data).unwrap();
                 self.0.data.write().unwrap().canonical_username =
-                    welcome_data.get_canonical_username().to_string();
+                    welcome_data.get_canonical_username().to_owned();
 
                 eprintln!("Authenticated !");
                 Ok(())

src/diffie_hellman.rs

@@ -38,7 +38,7 @@ impl DHLocalKeys {
     }
 
     pub fn public_key(&self) -> Vec<u8> {
-        return self.public_key.to_bytes_be();
+        self.public_key.to_bytes_be()
     }
 
     pub fn shared_secret(&self, remote_key: &[u8]) -> Vec<u8> {

src/discovery.rs

@@ -96,7 +96,7 @@ impl DiscoveryManager {
             h.result().code().to_owned()
         };
 
-        assert_eq!(mac.as_slice(), cksum);
+        assert_eq!(&mac[..], cksum);
 
         let decrypted = {
             let mut data = vec![0u8; encrypted.len()];
@@ -128,8 +128,7 @@ impl DiscoveryManager {
 
         for mut request in server.incoming_requests() {
             let (_, query, _) = url::parse_path(request.url()).unwrap();
-            let mut params = query.map(|q| url::form_urlencoded::parse(q.as_bytes()))
-                                  .unwrap_or(Vec::new());
+            let mut params = query.map_or(vec![], |q| url::form_urlencoded::parse(q.as_bytes()));
 
             if *request.method() == Method::Post {
                 let mut body = Vec::new();

src/lib.rs

@@ -1,6 +1,6 @@
 #![crate_name = "librespot"]
 
-#![feature(plugin,zero_one,iter_arith,mpsc_select,clone_from_slice,convert)]
+#![feature(plugin,zero_one,iter_arith,mpsc_select,clone_from_slice)]
 
 #![plugin(protobuf_macros)]
 #![plugin(json_macros)]

src/metadata.rs

@@ -142,8 +142,7 @@ impl MetadataManager {
     }
 
     pub fn get<T: MetadataTrait>(&mut self, session: &Session, id: SpotifyId) -> MetadataRef<T> {
-
-        let _session = session.clone();
+        let session = session.clone();
         session.mercury(MercuryRequest {
                    method: MercuryMethod::GET,
                    uri: format!("{}/{}", T::base_url(), id.to_base16()),
@@ -151,12 +150,10 @@ impl MetadataManager {
                    payload: Vec::new(),
                })
                .and_then(move |response| {
-                   let msg: T::Message = protobuf::parse_from_bytes(response.payload
-                                                                            .first()
-                                                                            .unwrap())
-                                             .unwrap();
+                   let data = response.payload.first().unwrap();
+                   let msg: T::Message = protobuf::parse_from_bytes(data).unwrap();
 
-                   Ok(T::parse(&msg, &_session))
+                   Ok(T::parse(&msg, &session))
                })
     }
 }

src/player.rs

@@ -105,7 +105,7 @@ impl PlayerInternal {
                         };
                         state.position_ms = position;
                         state.position_measured_at = util::now_ms();
-                        return true;
+                        true
                     });
                     drop(decoder);
 
@@ -150,7 +150,7 @@ impl PlayerInternal {
                         state.position_ms = position;
                         state.position_measured_at = util::now_ms();
 
-                        return true;
+                        true
                     });
                     println!("Load Done");
                 }
@@ -160,13 +160,14 @@ impl PlayerInternal {
                         state.position_ms =
                             (decoder.as_mut().unwrap().time_tell().unwrap() * 1000f64) as u32;
                         state.position_measured_at = util::now_ms();
-                        return true;
+
+                        true
                     });
                 }
                 Some(PlayerCommand::Play) => {
                     self.update(|state| {
                         state.status = PlayStatus::kPlayStatusPlay;
-                        return true;
+                        true
                     });
 
                     stream.start().unwrap();
@@ -175,7 +176,7 @@ impl PlayerInternal {
                     self.update(|state| {
                         state.status = PlayStatus::kPlayStatusPause;
                         state.update_time = util::now_ms();
-                        return true;
+                        true
                     });
 
                     stream.stop().unwrap();
@@ -185,7 +186,7 @@ impl PlayerInternal {
                         if state.status == PlayStatus::kPlayStatusPlay {
                             state.status = PlayStatus::kPlayStatusPause;
                         }
-                        return true;
+                        true
                     });
 
                     stream.stop().unwrap();
@@ -209,7 +210,7 @@ impl PlayerInternal {
                         self.update(|state| {
                             state.status = PlayStatus::kPlayStatusStop;
                             state.end_of_track = true;
-                            return true;
+                            true
                         });
 
                         stream.stop().unwrap();
@@ -224,9 +225,10 @@ impl PlayerInternal {
                         state.position_ms =
                             (decoder.as_mut().unwrap().time_tell().unwrap() * 1000f64) as u32;
                         state.position_measured_at = now;
-                        return true;
+
+                        true
                     } else {
-                        return false;
+                        false
                     }
                 });
             }
@@ -293,24 +295,24 @@ impl SpircDelegate for Player {
             }
         });
 
-        return update_rx;
+        update_rx
     }
 }
 
 impl SpircState for PlayerState {
     fn status(&self) -> PlayStatus {
-        return self.status;
+        self.status
     }
 
     fn position(&self) -> (u32, i64) {
-        return (self.position_ms, self.position_measured_at);
+        (self.position_ms, self.position_measured_at)
     }
 
     fn update_time(&self) -> i64 {
-        return self.update_time;
+        self.update_time
     }
 
     fn end_of_track(&self) -> bool {
-        return self.end_of_track;
+        self.end_of_track
     }
 }

src/util/mod.rs

@@ -44,7 +44,7 @@ pub fn rand_vec<G: Rng, R: Rand>(rng: &mut G, size: usize) -> Vec<R> {
         vec.push(R::rand(rng));
     }
 
-    return vec;
+    vec
 }
 
 pub mod version {
@@ -103,17 +103,17 @@ pub fn powm(base: &BigUint, exp: &BigUint, modulus: &BigUint) -> BigUint {
         base = (&base).mul(&base).rem(modulus);
     }
 
-    return result;
+    result
 }
 
 pub struct StrChunks<'s>(&'s str, usize);
 
 pub trait StrChunksExt {
-    fn chunks<'s>(&'s self, size: usize) -> StrChunks<'s>;
+    fn chunks(&self, size: usize) -> StrChunks;
 }
 
 impl StrChunksExt for str {
-    fn chunks<'a>(&'a self, size: usize) -> StrChunks<'a> {
+    fn chunks(&self, size: usize) -> StrChunks {
         StrChunks(self, size)
     }
 }

src/util/subfile.rs

@@ -29,11 +29,10 @@ impl<T: Read + Seek> Seek for Subfile<T> {
         };
 
         let newpos = try!(self.stream.seek(pos));
-
         if newpos > self.offset {
-            return Ok(newpos - self.offset);
+            Ok(newpos - self.offset)
         } else {
-            return Ok(0);
+            Ok(0)
         }
     }
 }