diff --git a/core/build.rs b/core/build.rs
index 5a2e5db8..d57d57a9 100644
--- a/core/build.rs
+++ b/core/build.rs
@@ -1,36 +1,35 @@
-extern crate vergen;
 extern crate protobuf_macros;
 extern crate rand;
+extern crate vergen;
 
 use rand::Rng;
 use std::env;
-use std::path::PathBuf;
 use std::fs::OpenOptions;
 use std::io::Write;
+use std::path::PathBuf;
 
 fn main() {
     let out = PathBuf::from(env::var("OUT_DIR").unwrap());
 
     vergen::vergen(vergen::OutputFns::all()).unwrap();
 
-    let build_id: String = rand::thread_rng()
-        .gen_ascii_chars()
-        .take(8)
-        .collect();
+    let build_id: String = rand::thread_rng().gen_ascii_chars().take(8).collect();
 
-    let mut version_file =
-        OpenOptions::new()
+    let mut version_file = OpenOptions::new()
         .write(true)
         .append(true)
         .open(&out.join("version.rs"))
         .unwrap();
 
-    let build_id_fn = format!("
+    let build_id_fn = format!(
+        "
 /// Generate a random build id.
 pub fn build_id() -> &'static str {{
     \"{}\"
 }}
-", build_id);
+",
+        build_id
+    );
 
     if let Err(e) = version_file.write_all(build_id_fn.as_bytes()) {
         println!("{}", e);
diff --git a/core/src/apresolve.rs b/core/src/apresolve.rs
index bf3ba276..8db9a5ed 100644
--- a/core/src/apresolve.rs
+++ b/core/src/apresolve.rs
@@ -1,20 +1,20 @@
-const AP_FALLBACK : &'static str = "ap.spotify.com:80";
-const APRESOLVE_ENDPOINT : &'static str = "http://apresolve.spotify.com/";
+const AP_FALLBACK: &'static str = "ap.spotify.com:80";
+const APRESOLVE_ENDPOINT: &'static str = "http://apresolve.spotify.com/";
 
-use std::str::FromStr;
 use futures::{Future, Stream};
-use hyper::{self, Uri, Client};
+use hyper::{self, Client, Uri};
 use serde_json;
+use std::str::FromStr;
 use tokio_core::reactor::Handle;
 
-error_chain! { }
+error_chain!{}
 
 #[derive(Clone, Debug, Serialize, Deserialize)]
 pub struct APResolveData {
-    ap_list: Vec<String>
+    ap_list: Vec<String>,
 }
 
-fn apresolve(handle: &Handle) -> Box<Future<Item=String, Error=Error>> {
+fn apresolve(handle: &Handle) -> Box<Future<Item = String, Error = Error>> {
     let url = Uri::from_str(APRESOLVE_ENDPOINT).expect("invalid AP resolve URL");
 
     let client = Client::new(handle);
@@ -27,14 +27,10 @@ fn apresolve(handle: &Handle) -> Box<Future<Item=String, Error=Error>> {
         })
     });
     let body = body.then(|result| result.chain_err(|| "HTTP error"));
-    let body = body.and_then(|body| {
-        String::from_utf8(body).chain_err(|| "invalid UTF8 in response")
-    });
+    let body = body.and_then(|body| String::from_utf8(body).chain_err(|| "invalid UTF8 in response"));
 
-    let data = body.and_then(|body| {
-        serde_json::from_str::<APResolveData>(&body)
-            .chain_err(|| "invalid JSON")
-    });
+    let data =
+        body.and_then(|body| serde_json::from_str::<APResolveData>(&body).chain_err(|| "invalid JSON"));
 
     let ap = data.and_then(|data| {
         let ap = data.ap_list.first().ok_or("empty AP List")?;
@@ -44,9 +40,10 @@ fn apresolve(handle: &Handle) -> Box<Future<Item=String, Error=Error>> {
     Box::new(ap)
 }
 
-pub(crate) fn apresolve_or_fallback<E>(handle: &Handle)
-           -> Box<Future<Item=String, Error=E>>
-           where E: 'static {
+pub(crate) fn apresolve_or_fallback<E>(handle: &Handle) -> Box<Future<Item = String, Error = E>>
+where
+    E: 'static,
+{
     let ap = apresolve(handle).or_else(|e| {
         warn!("Failed to resolve Access Point: {}", e.description());
         warn!("Using fallback \"{}\"", AP_FALLBACK);
diff --git a/core/src/audio_key.rs b/core/src/audio_key.rs
index a7a85896..2d4fb2ab 100644
--- a/core/src/audio_key.rs
+++ b/core/src/audio_key.rs
@@ -1,17 +1,17 @@
 use byteorder::{BigEndian, ByteOrder, WriteBytesExt};
 use bytes::Bytes;
-use futures::sync::oneshot;
 use futures::{Async, Future, Poll};
+use futures::sync::oneshot;
 use std::collections::HashMap;
 use std::io::Write;
 
+use util::{FileId, SpotifyId};
 use util::SeqGenerator;
-use util::{SpotifyId, FileId};
 
-#[derive(Debug,Hash,PartialEq,Eq,Copy,Clone)]
+#[derive(Debug, Hash, PartialEq, Eq, Copy, Clone)]
 pub struct AudioKey(pub [u8; 16]);
 
-#[derive(Debug,Hash,PartialEq,Eq,Copy,Clone)]
+#[derive(Debug, Hash, PartialEq, Eq, Copy, Clone)]
 pub struct AudioKeyError;
 
 component! {
@@ -35,7 +35,11 @@ impl AudioKeyManager {
                     let _ = sender.send(Ok(AudioKey(key)));
                 }
                 0xe => {
-                    warn!("error audio key {:x} {:x}", data.as_ref()[0], data.as_ref()[1]);
+                    warn!(
+                        "error audio key {:x} {:x}",
+                        data.as_ref()[0],
+                        data.as_ref()[1]
+                    );
                     let _ = sender.send(Err(AudioKeyError));
                 }
                 _ => (),
@@ -68,7 +72,7 @@ impl AudioKeyManager {
 }
 
 pub struct AudioKeyFuture<T>(oneshot::Receiver<Result<T, AudioKeyError>>);
-impl <T> Future for AudioKeyFuture<T> {
+impl<T> Future for AudioKeyFuture<T> {
     type Item = T;
     type Error = AudioKeyError;
 
@@ -81,4 +85,3 @@ impl <T> Future for AudioKeyFuture<T> {
         }
     }
 }
-
diff --git a/core/src/authentication.rs b/core/src/authentication.rs
index f441a7fd..c079d543 100644
--- a/core/src/authentication.rs
+++ b/core/src/authentication.rs
@@ -10,23 +10,22 @@ use protobuf::ProtobufEnum;
 use rpassword;
 use serde;
 use serde_json;
-use std::io::{self, stderr, Read, Write};
 use std::fs::File;
+use std::io::{self, stderr, Read, Write};
 use std::path::Path;
 
 use protocol::authentication::AuthenticationType;
 
-#[derive(Debug, Clone)]
-#[derive(Serialize, Deserialize)]
+#[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct Credentials {
     pub username: String,
 
-    #[serde(serialize_with="serialize_protobuf_enum")]
-    #[serde(deserialize_with="deserialize_protobuf_enum")]
+    #[serde(serialize_with = "serialize_protobuf_enum")]
+    #[serde(deserialize_with = "deserialize_protobuf_enum")]
     pub auth_type: AuthenticationType,
 
-    #[serde(serialize_with="serialize_base64")]
-    #[serde(deserialize_with="deserialize_base64")]
+    #[serde(serialize_with = "serialize_base64")]
+    #[serde(deserialize_with = "deserialize_base64")]
     pub auth_data: Vec<u8>,
 }
 
@@ -89,13 +88,18 @@ impl Credentials {
         let blob = {
             // Anyone know what this block mode is ?
             let mut data = vec![0u8; encrypted_blob.len()];
-            let mut cipher = aes::ecb_decryptor(aes::KeySize::KeySize192,
-                                                &key,
-                                                crypto::blockmodes::NoPadding);
-            cipher.decrypt(&mut crypto::buffer::RefReadBuffer::new(&encrypted_blob),
-                           &mut crypto::buffer::RefWriteBuffer::new(&mut data),
-                           true)
-                  .unwrap();
+            let mut cipher = aes::ecb_decryptor(
+                aes::KeySize::KeySize192,
+                &key,
+                crypto::blockmodes::NoPadding,
+            );
+            cipher
+                .decrypt(
+                    &mut crypto::buffer::RefReadBuffer::new(&encrypted_blob),
+                    &mut crypto::buffer::RefWriteBuffer::new(&mut data),
+                    true,
+                )
+                .unwrap();
 
             let l = encrypted_blob.len();
             for i in 0..l - 0x10 {
@@ -112,7 +116,7 @@ impl Credentials {
         let auth_type = read_int(&mut cursor).unwrap();
         let auth_type = AuthenticationType::from_i32(auth_type as i32).unwrap();
         read_u8(&mut cursor).unwrap();
-        let auth_data = read_bytes(&mut cursor).unwrap();;
+        let auth_data = read_bytes(&mut cursor).unwrap();
 
         Credentials {
             username: username,
@@ -144,42 +148,49 @@ impl Credentials {
 }
 
 fn serialize_protobuf_enum<T, S>(v: &T, ser: S) -> Result<S::Ok, S::Error>
-    where T: ProtobufEnum, S: serde::Serializer {
-
+where
+    T: ProtobufEnum,
+    S: serde::Serializer,
+{
     serde::Serialize::serialize(&v.value(), ser)
 }
 
 fn deserialize_protobuf_enum<T, D>(de: D) -> Result<T, D::Error>
-    where T: ProtobufEnum, D: serde::Deserializer {
-
-    let v : i32 = try!(serde::Deserialize::deserialize(de));
+where
+    T: ProtobufEnum,
+    D: serde::Deserializer,
+{
+    let v: i32 = try!(serde::Deserialize::deserialize(de));
     T::from_i32(v).ok_or_else(|| serde::de::Error::custom("Invalid enum value"))
 }
 
 fn serialize_base64<T, S>(v: &T, ser: S) -> Result<S::Ok, S::Error>
-    where T: AsRef<[u8]>, S: serde::Serializer {
-
+where
+    T: AsRef<[u8]>,
+    S: serde::Serializer,
+{
     serde::Serialize::serialize(&base64::encode(v.as_ref()), ser)
 }
 
 fn deserialize_base64<D>(de: D) -> Result<Vec<u8>, D::Error>
-    where D: serde::Deserializer {
-
-    let v : String = try!(serde::Deserialize::deserialize(de));
+where
+    D: serde::Deserializer,
+{
+    let v: String = try!(serde::Deserialize::deserialize(de));
     base64::decode(&v).map_err(|e| serde::de::Error::custom(e.to_string()))
 }
 
-pub fn get_credentials(username: Option<String>, password: Option<String>,
-                       cached_credentials: Option<Credentials>)
-    -> Option<Credentials>
-{
+pub fn get_credentials(
+    username: Option<String>,
+    password: Option<String>,
+    cached_credentials: Option<Credentials>,
+) -> Option<Credentials> {
     match (username, password, cached_credentials) {
+        (Some(username), Some(password), _) => Some(Credentials::with_password(username, password)),
 
-        (Some(username), Some(password), _)
-            => Some(Credentials::with_password(username, password)),
-
-        (Some(ref username), _, Some(ref credentials))
-            if *username == credentials.username => Some(credentials.clone()),
+        (Some(ref username), _, Some(ref credentials)) if *username == credentials.username => {
+            Some(credentials.clone())
+        }
 
         (Some(username), None, _) => {
             write!(stderr(), "Password for {}: ", username).unwrap();
@@ -188,8 +199,7 @@ pub fn get_credentials(username: Option<String>, password: Option<String>,
             Some(Credentials::with_password(username.clone(), password))
         }
 
-        (None, _, Some(credentials))
-            => Some(credentials),
+        (None, _, Some(credentials)) => Some(credentials),
 
         (None, _, None) => None,
     }
diff --git a/core/src/cache.rs b/core/src/cache.rs
index 1a58bdc0..fb59c729 100644
--- a/core/src/cache.rs
+++ b/core/src/cache.rs
@@ -5,8 +5,8 @@ use std::io::Read;
 use std::path::Path;
 use std::path::PathBuf;
 
-use util::FileId;
 use authentication::Credentials;
+use util::FileId;
 
 #[derive(Clone)]
 pub struct Cache {
@@ -31,7 +31,7 @@ impl Cache {
 
         Cache {
             root: location,
-            use_audio_cache: use_audio_cache
+            use_audio_cache: use_audio_cache,
         }
     }
 }
diff --git a/core/src/channel.rs b/core/src/channel.rs
index 19f880e7..112e6ad4 100644
--- a/core/src/channel.rs
+++ b/core/src/channel.rs
@@ -1,7 +1,7 @@
 use byteorder::{BigEndian, ByteOrder};
 use bytes::Bytes;
-use futures::sync::{BiLock, mpsc};
-use futures::{Poll, Async, Stream};
+use futures::{Async, Poll, Stream};
+use futures::sync::{mpsc, BiLock};
 use std::collections::HashMap;
 
 use util::SeqGenerator;
@@ -13,7 +13,7 @@ component! {
     }
 }
 
-#[derive(Debug,Hash,PartialEq,Eq,Copy,Clone)]
+#[derive(Debug, Hash, PartialEq, Eq, Copy, Clone)]
 pub struct ChannelError;
 
 pub struct Channel {
diff --git a/core/src/component.rs b/core/src/component.rs
index 1a887e77..923e72ec 100644
--- a/core/src/component.rs
+++ b/core/src/component.rs
@@ -36,15 +36,15 @@ macro_rules! component {
     }
 }
 
-use std::sync::Mutex;
 use std::cell::UnsafeCell;
+use std::sync::Mutex;
 
 pub struct Lazy<T>(Mutex<bool>, UnsafeCell<Option<T>>);
-unsafe impl <T: Sync> Sync for Lazy<T> {}
-unsafe impl <T: Send> Send for Lazy<T> {}
+unsafe impl<T: Sync> Sync for Lazy<T> {}
+unsafe impl<T: Send> Send for Lazy<T> {}
 
 #[cfg_attr(feature = "cargo-clippy", allow(mutex_atomic))]
-impl <T> Lazy<T> {
+impl<T> Lazy<T> {
     pub fn new() -> Lazy<T> {
         Lazy(Mutex::new(false), UnsafeCell::new(None))
     }
diff --git a/core/src/config.rs b/core/src/config.rs
index 46b22e41..297c04f4 100644
--- a/core/src/config.rs
+++ b/core/src/config.rs
@@ -1,10 +1,10 @@
-use uuid::Uuid;
-use std::str::FromStr;
 use std::fmt;
+use std::str::FromStr;
+use uuid::Uuid;
 
 use version;
 
-#[derive(Clone,Debug)]
+#[derive(Clone, Debug)]
 pub struct SessionConfig {
     pub user_agent: String,
     pub device_id: String,
@@ -20,7 +20,6 @@ impl Default for SessionConfig {
     }
 }
 
-
 #[derive(Clone, Copy, Debug, Hash, PartialOrd, Ord, PartialEq, Eq)]
 pub enum Bitrate {
     Bitrate96,
@@ -100,7 +99,7 @@ impl Default for DeviceType {
     }
 }
 
-#[derive(Clone,Debug)]
+#[derive(Clone, Debug)]
 pub struct PlayerConfig {
     pub bitrate: Bitrate,
     pub onstart: Option<String>,
@@ -117,7 +116,7 @@ impl Default for PlayerConfig {
     }
 }
 
-#[derive(Clone,Debug)]
+#[derive(Clone, Debug)]
 pub struct ConnectConfig {
     pub name: String,
     pub device_type: DeviceType,
diff --git a/core/src/connection/codec.rs b/core/src/connection/codec.rs
index 6fbede13..4a8fd208 100644
--- a/core/src/connection/codec.rs
+++ b/core/src/connection/codec.rs
@@ -1,5 +1,5 @@
 use byteorder::{BigEndian, ByteOrder};
-use bytes::{Bytes, BytesMut, BufMut};
+use bytes::{BufMut, Bytes, BytesMut};
 use shannon::Shannon;
 use std::io;
 use tokio_io::codec::{Decoder, Encoder};
@@ -88,7 +88,8 @@ impl Decoder for APCodec {
 
                 let mut payload = buf.split_to(size + MAC_SIZE);
 
-                self.decode_cipher.decrypt(&mut payload.get_mut(..size).unwrap());
+                self.decode_cipher
+                    .decrypt(&mut payload.get_mut(..size).unwrap());
                 let mac = payload.split_off(size);
                 self.decode_cipher.check_mac(mac.as_ref())?;
 
@@ -96,7 +97,6 @@ impl Decoder for APCodec {
             }
         }
 
-
         Ok(None)
     }
 }
diff --git a/core/src/connection/handshake.rs b/core/src/connection/handshake.rs
index 5b94f709..c47364b4 100644
--- a/core/src/connection/handshake.rs
+++ b/core/src/connection/handshake.rs
@@ -1,20 +1,21 @@
-use crypto::sha1::Sha1;
+use byteorder::{BigEndian, ByteOrder, WriteBytesExt};
 use crypto::hmac::Hmac;
-use crypto::mac::Mac;use byteorder::{BigEndian, ByteOrder, WriteBytesExt};
+use crypto::mac::Mac;
+use crypto::sha1::Sha1;
+use futures::{Async, Future, Poll};
 use protobuf::{self, Message, MessageStatic};
 use rand::thread_rng;
 use std::io::{self, Read};
 use std::marker::PhantomData;
 use tokio_io::{AsyncRead, AsyncWrite};
 use tokio_io::codec::Framed;
-use tokio_io::io::{write_all, WriteAll, read_exact, ReadExact, Window};
-use futures::{Poll, Async, Future};
+use tokio_io::io::{read_exact, write_all, ReadExact, Window, WriteAll};
 
+use super::codec::APCodec;
 use diffie_hellman::DHLocalKeys;
 use protocol;
-use protocol::keyexchange::{ClientHello, APResponseMessage, ClientResponsePlaintext};
+use protocol::keyexchange::{APResponseMessage, ClientHello, ClientResponsePlaintext};
 use util;
-use super::codec::APCodec;
 
 pub struct Handshake<T> {
     keys: DHLocalKeys,
@@ -37,7 +38,7 @@ pub fn handshake<T: AsyncRead + AsyncWrite>(connection: T) -> Handshake<T> {
     }
 }
 
-impl <T: AsyncRead + AsyncWrite> Future for Handshake<T> {
+impl<T: AsyncRead + AsyncWrite> Future for Handshake<T> {
     type Item = Framed<T, APCodec>;
     type Error = io::Error;
 
@@ -47,22 +48,22 @@ impl <T: AsyncRead + AsyncWrite> Future for Handshake<T> {
             self.state = match self.state {
                 ClientHello(ref mut write) => {
                     let (connection, accumulator) = try_ready!(write.poll());
-                    
+
                     let read = recv_packet(connection, accumulator);
                     APResponse(read)
                 }
 
                 APResponse(ref mut read) => {
                     let (connection, message, accumulator) = try_ready!(read.poll());
-                    let remote_key = message.get_challenge()
+                    let remote_key = message
+                        .get_challenge()
                         .get_login_crypto_challenge()
                         .get_diffie_hellman()
                         .get_gs()
                         .to_owned();
 
                     let shared_secret = self.keys.shared_secret(&remote_key);
-                    let (challenge, send_key, recv_key) = compute_keys(&shared_secret,
-                                                                       &accumulator);
+                    let (challenge, send_key, recv_key) = compute_keys(&shared_secret, &accumulator);
                     let codec = APCodec::new(&send_key, &recv_key);
 
                     let write = client_response(connection, challenge);
@@ -129,15 +130,17 @@ enum RecvPacket<T, M: MessageStatic> {
 }
 
 fn recv_packet<T: AsyncRead, M>(connection: T, acc: Vec<u8>) -> RecvPacket<T, M>
-    where T: Read,
-          M: MessageStatic
+where
+    T: Read,
+    M: MessageStatic,
 {
     RecvPacket::Header(read_into_accumulator(connection, 4, acc), PhantomData)
 }
 
-impl <T: AsyncRead, M> Future for RecvPacket<T, M>
-    where T: Read,
-          M: MessageStatic
+impl<T: AsyncRead, M> Future for RecvPacket<T, M>
+where
+    T: Read,
+    M: MessageStatic,
 {
     type Item = (T, M, Vec<u8>);
     type Error = io::Error;
@@ -167,7 +170,11 @@ impl <T: AsyncRead, M> Future for RecvPacket<T, M>
     }
 }
 
-fn read_into_accumulator<T: AsyncRead>(connection: T, size: usize, mut acc: Vec<u8>) -> ReadExact<T, Window<Vec<u8>>> {
+fn read_into_accumulator<T: AsyncRead>(
+    connection: T,
+    size: usize,
+    mut acc: Vec<u8>,
+) -> ReadExact<T, Window<Vec<u8>>> {
     let offset = acc.len();
     acc.resize(offset + size, 0);
 
@@ -191,5 +198,9 @@ fn compute_keys(shared_secret: &[u8], packets: &[u8]) -> (Vec<u8>, Vec<u8>, Vec<
     mac = Hmac::new(Sha1::new(), &data[..0x14]);
     mac.input(packets);
 
-    (mac.result().code().to_vec(), data[0x14..0x34].to_vec(), data[0x34..0x54].to_vec())
+    (
+        mac.result().code().to_vec(),
+        data[0x14..0x34].to_vec(),
+        data[0x34..0x54].to_vec(),
+    )
 }
diff --git a/core/src/connection/mod.rs b/core/src/connection/mod.rs
index 91c220b6..fae4092a 100644
--- a/core/src/connection/mod.rs
+++ b/core/src/connection/mod.rs
@@ -5,31 +5,34 @@ pub use self::codec::APCodec;
 pub use self::handshake::handshake;
 
 use futures::{Future, Sink, Stream};
+use protobuf::{self, Message};
 use std::io;
 use std::net::ToSocketAddrs;
 use tokio_core::net::TcpStream;
 use tokio_core::reactor::Handle;
 use tokio_io::codec::Framed;
-use protobuf::{self, Message};
 
 use authentication::Credentials;
 use version;
 
 pub type Transport = Framed<TcpStream, APCodec>;
 
-pub fn connect<A: ToSocketAddrs>(addr: A, handle: &Handle) -> Box<Future<Item = Transport, Error = io::Error>> {
+pub fn connect<A: ToSocketAddrs>(
+    addr: A,
+    handle: &Handle,
+) -> Box<Future<Item = Transport, Error = io::Error>> {
     let addr = addr.to_socket_addrs().unwrap().next().unwrap();
     let socket = TcpStream::connect(&addr, handle);
-    let connection = socket.and_then(|socket| {
-        handshake(socket)
-    });
+    let connection = socket.and_then(|socket| handshake(socket));
 
     Box::new(connection)
 }
 
-pub fn authenticate(transport: Transport, credentials: Credentials, device_id: String)
-    -> Box<Future<Item = (Transport, Credentials), Error = io::Error>>
-{
+pub fn authenticate(
+    transport: Transport,
+    credentials: Credentials,
+    device_id: String,
+) -> Box<Future<Item = (Transport, Credentials), Error = io::Error>> {
     use protocol::authentication::{APWelcome, ClientResponseEncrypted, CpuFamily, Os};
 
     let packet = protobuf_init!(ClientResponseEncrypted::new(), {
@@ -50,26 +53,26 @@ pub fn authenticate(transport: Transport, credentials: Credentials, device_id: S
     let cmd = 0xab;
     let data = packet.write_to_bytes().unwrap();
 
-    Box::new(transport.send((cmd, data)).and_then(|transport| {
-        transport.into_future().map_err(|(err, _stream)| err)
-    }).and_then(|(packet, transport)| {
-        match packet {
-            Some((0xac, data)) => {
-                let welcome_data: APWelcome =
-                    protobuf::parse_from_bytes(data.as_ref()).unwrap();
+    Box::new(
+        transport
+            .send((cmd, data))
+            .and_then(|transport| transport.into_future().map_err(|(err, _stream)| err))
+            .and_then(|(packet, transport)| match packet {
+                Some((0xac, data)) => {
+                    let welcome_data: APWelcome = protobuf::parse_from_bytes(data.as_ref()).unwrap();
 
-                let reusable_credentials = Credentials {
-                    username: welcome_data.get_canonical_username().to_owned(),
-                    auth_type: welcome_data.get_reusable_auth_credentials_type(),
-                    auth_data: welcome_data.get_reusable_auth_credentials().to_owned(),
-                };
+                    let reusable_credentials = Credentials {
+                        username: welcome_data.get_canonical_username().to_owned(),
+                        auth_type: welcome_data.get_reusable_auth_credentials_type(),
+                        auth_data: welcome_data.get_reusable_auth_credentials().to_owned(),
+                    };
 
-                Ok((transport, reusable_credentials))
-            }
+                    Ok((transport, reusable_credentials))
+                }
 
-            Some((0xad, _)) => panic!("Authentication failed"),
-            Some((cmd, _)) => panic!("Unexpected packet {:?}", cmd),
-            None => panic!("EOF"),
-        }
-    }))
+                Some((0xad, _)) => panic!("Authentication failed"),
+                Some((cmd, _)) => panic!("Unexpected packet {:?}", cmd),
+                None => panic!("EOF"),
+            }),
+    )
 }
diff --git a/core/src/diffie_hellman.rs b/core/src/diffie_hellman.rs
index 2f6572e1..2200399f 100644
--- a/core/src/diffie_hellman.rs
+++ b/core/src/diffie_hellman.rs
@@ -43,9 +43,11 @@ impl DHLocalKeys {
     }
 
     pub fn shared_secret(&self, remote_key: &[u8]) -> Vec<u8> {
-        let shared_key = util::powm(&BigUint::from_bytes_be(remote_key),
-                                    &self.private_key,
-                                    &DH_PRIME);
+        let shared_key = util::powm(
+            &BigUint::from_bytes_be(remote_key),
+            &self.private_key,
+            &DH_PRIME,
+        );
         shared_key.to_bytes_be()
     }
 }
diff --git a/core/src/keymaster.rs b/core/src/keymaster.rs
index a4e0c169..4d82ae07 100644
--- a/core/src/keymaster.rs
+++ b/core/src/keymaster.rs
@@ -13,13 +13,19 @@ pub struct Token {
     pub scope: Vec<String>,
 }
 
-pub fn get_token(session: &Session, client_id: &str, scopes: &str) -> Box<Future<Item = Token, Error = MercuryError>> {
-    let url = format!("hm://keymaster/token/authenticated?client_id={}&scope={}",
-                      client_id, scopes);
+pub fn get_token(
+    session: &Session,
+    client_id: &str,
+    scopes: &str,
+) -> Box<Future<Item = Token, Error = MercuryError>> {
+    let url = format!(
+        "hm://keymaster/token/authenticated?client_id={}&scope={}",
+        client_id, scopes
+    );
     Box::new(session.mercury().get(url).map(move |response| {
         let data = response.payload.first().expect("Empty payload");
         let data = String::from_utf8(data.clone()).unwrap();
-        let token : Token = serde_json::from_str(&data).unwrap();
+        let token: Token = serde_json::from_str(&data).unwrap();
 
         token
     }))
diff --git a/core/src/lib.rs b/core/src/lib.rs
index ab7a556f..4cc44448 100644
--- a/core/src/lib.rs
+++ b/core/src/lib.rs
@@ -1,10 +1,15 @@
 #![cfg_attr(feature = "cargo-clippy", allow(unused_io_amount))]
 
-#[macro_use] extern crate error_chain;
-#[macro_use] extern crate futures;
-#[macro_use] extern crate lazy_static;
-#[macro_use] extern crate log;
-#[macro_use] extern crate serde_derive;
+#[macro_use]
+extern crate error_chain;
+#[macro_use]
+extern crate futures;
+#[macro_use]
+extern crate lazy_static;
+#[macro_use]
+extern crate log;
+#[macro_use]
+extern crate serde_derive;
 
 extern crate base64;
 extern crate byteorder;
@@ -26,7 +31,8 @@ extern crate uuid;
 
 extern crate librespot_protocol as protocol;
 
-#[macro_use] mod component;
+#[macro_use]
+mod component;
 mod apresolve;
 pub mod audio_key;
 pub mod authentication;
diff --git a/core/src/mercury/mod.rs b/core/src/mercury/mod.rs
index 6309d0f4..9a607061 100644
--- a/core/src/mercury/mod.rs
+++ b/core/src/mercury/mod.rs
@@ -1,7 +1,7 @@
 use byteorder::{BigEndian, ByteOrder};
 use bytes::Bytes;
-use futures::sync::{oneshot, mpsc};
-use futures::{Async, Poll, Future};
+use futures::{Async, Future, Poll};
+use futures::sync::{mpsc, oneshot};
 use protobuf;
 use protocol;
 use std::collections::HashMap;
@@ -30,7 +30,7 @@ pub struct MercuryPending {
 }
 
 pub struct MercuryFuture<T>(oneshot::Receiver<Result<T, MercuryError>>);
-impl <T> Future for MercuryFuture<T> {
+impl<T> Future for MercuryFuture<T> {
     type Item = T;
     type Error = MercuryError;
 
@@ -51,9 +51,7 @@ impl MercuryManager {
         seq
     }
 
-    pub fn request(&self, req: MercuryRequest)
-        -> MercuryFuture<MercuryResponse>
-    {
+    pub fn request(&self, req: MercuryRequest) -> MercuryFuture<MercuryResponse> {
         let (tx, rx) = oneshot::channel();
 
         let pending = MercuryPending {
@@ -72,9 +70,7 @@ impl MercuryManager {
         MercuryFuture(rx)
     }
 
-    pub fn get<T: Into<String>>(&self, uri: T)
-        -> MercuryFuture<MercuryResponse>
-    {
+    pub fn get<T: Into<String>>(&self, uri: T) -> MercuryFuture<MercuryResponse> {
         self.request(MercuryRequest {
             method: MercuryMethod::GET,
             uri: uri.into(),
@@ -83,9 +79,7 @@ impl MercuryManager {
         })
     }
 
-    pub fn send<T: Into<String>>(&self, uri: T, data: Vec<u8>)
-        -> MercuryFuture<MercuryResponse>
-    {
+    pub fn send<T: Into<String>>(&self, uri: T, data: Vec<u8>) -> MercuryFuture<MercuryResponse> {
         self.request(MercuryRequest {
             method: MercuryMethod::SEND,
             uri: uri.into(),
@@ -98,9 +92,10 @@ impl MercuryManager {
         MercurySender::new(self.clone(), uri.into())
     }
 
-    pub fn subscribe<T: Into<String>>(&self, uri: T)
-        -> Box<Future<Item = mpsc::UnboundedReceiver<MercuryResponse>, Error = MercuryError>>
-    {
+    pub fn subscribe<T: Into<String>>(
+        &self,
+        uri: T,
+    ) -> Box<Future<Item = mpsc::UnboundedReceiver<MercuryResponse>, Error = MercuryError>> {
         let uri = uri.into();
         let request = self.request(MercuryRequest {
             method: MercuryMethod::SUB,
@@ -118,8 +113,8 @@ impl MercuryManager {
                 if response.payload.len() > 0 {
                     // Old subscription protocol, watch the provided list of URIs
                     for sub in response.payload {
-                        let mut sub : protocol::pubsub::Subscription
-                            = protobuf::parse_from_bytes(&sub).unwrap();
+                        let mut sub: protocol::pubsub::Subscription =
+                            protobuf::parse_from_bytes(&sub).unwrap();
                         let sub_uri = sub.take_uri();
 
                         debug!("subscribed sub_uri={}", sub_uri);
@@ -147,13 +142,11 @@ impl MercuryManager {
 
         let mut pending = match pending {
             Some(pending) => pending,
-            None if cmd == 0xb5 => {
-                MercuryPending {
-                    parts: Vec::new(),
-                    partial: None,
-                    callback: None,
-                }
-            }
+            None if cmd == 0xb5 => MercuryPending {
+                parts: Vec::new(),
+                partial: None,
+                callback: None,
+            },
             None => {
                 warn!("Ignore seq {:?} cmd {:x}", seq, cmd);
                 return;
diff --git a/core/src/mercury/sender.rs b/core/src/mercury/sender.rs
index 359e6907..f00235ef 100644
--- a/core/src/mercury/sender.rs
+++ b/core/src/mercury/sender.rs
@@ -1,5 +1,5 @@
+use futures::{Async, AsyncSink, Future, Poll, Sink, StartSend};
 use std::collections::VecDeque;
-use futures::{Async, Poll, Future, Sink, StartSend, AsyncSink};
 
 use super::*;
 
diff --git a/core/src/mercury/types.rs b/core/src/mercury/types.rs
index 9952b533..23f64c45 100644
--- a/core/src/mercury/types.rs
+++ b/core/src/mercury/types.rs
@@ -27,18 +27,17 @@ pub struct MercuryResponse {
     pub payload: Vec<Vec<u8>>,
 }
 
-#[derive(Debug,Hash,PartialEq,Eq,Copy,Clone)]
+#[derive(Debug, Hash, PartialEq, Eq, Copy, Clone)]
 pub struct MercuryError;
 
 impl ToString for MercuryMethod {
     fn to_string(&self) -> String {
         match *self {
-                MercuryMethod::GET => "GET",
-                MercuryMethod::SUB => "SUB",
-                MercuryMethod::UNSUB => "UNSUB",
-                MercuryMethod::SEND => "SEND",
-            }
-            .to_owned()
+            MercuryMethod::GET => "GET",
+            MercuryMethod::SUB => "SUB",
+            MercuryMethod::UNSUB => "UNSUB",
+            MercuryMethod::SEND => "SEND",
+        }.to_owned()
     }
 }
 
@@ -58,7 +57,9 @@ impl MercuryRequest {
         packet.write_u16::<BigEndian>(seq.len() as u16).unwrap();
         packet.write_all(seq).unwrap();
         packet.write_u8(1).unwrap(); // Flags: FINAL
-        packet.write_u16::<BigEndian>(1 + self.payload.len() as u16).unwrap(); // Part count
+        packet
+            .write_u16::<BigEndian>(1 + self.payload.len() as u16)
+            .unwrap(); // Part count
 
         let mut header = protocol::mercury::Header::new();
         header.set_uri(self.uri.clone());
@@ -68,7 +69,9 @@ impl MercuryRequest {
             header.set_content_type(content_type.clone());
         }
 
-        packet.write_u16::<BigEndian>(header.compute_size() as u16).unwrap();
+        packet
+            .write_u16::<BigEndian>(header.compute_size() as u16)
+            .unwrap();
         header.write_to_writer(&mut packet).unwrap();
 
         for p in &self.payload {
diff --git a/core/src/session.rs b/core/src/session.rs
index 9fe785ed..628e0377 100644
--- a/core/src/session.rs
+++ b/core/src/session.rs
@@ -1,19 +1,19 @@
 use bytes::Bytes;
 use crypto::digest::Digest;
 use crypto::sha1::Sha1;
+use futures::{Async, Future, IntoFuture, Poll, Stream};
 use futures::sync::mpsc;
-use futures::{Future, Stream, IntoFuture, Poll, Async};
 use std::io;
-use std::sync::{RwLock, Arc, Weak};
+use std::sync::{Arc, RwLock, Weak};
+use std::sync::atomic::{AtomicUsize, Ordering, ATOMIC_USIZE_INIT};
 use tokio_core::reactor::{Handle, Remote};
-use std::sync::atomic::{AtomicUsize, ATOMIC_USIZE_INIT, Ordering};
 
 use apresolve::apresolve_or_fallback;
 use authentication::Credentials;
 use cache::Cache;
 use component::Lazy;
-use connection;
 use config::SessionConfig;
+use connection;
 
 use audio_key::AudioKeyManager;
 use channel::ChannelManager;
@@ -40,7 +40,7 @@ pub struct SessionInternal {
     session_id: usize,
 }
 
-static SESSION_COUNTER : AtomicUsize = ATOMIC_USIZE_INIT;
+static SESSION_COUNTER: AtomicUsize = ATOMIC_USIZE_INIT;
 
 #[derive(Clone)]
 pub struct Session(pub Arc<SessionInternal>);
@@ -52,13 +52,14 @@ pub fn device_id(name: &str) -> String {
 }
 
 impl Session {
-    pub fn connect(config: SessionConfig, credentials: Credentials,
-                   cache: Option<Cache>, handle: Handle)
-        -> Box<Future<Item=Session, Error=io::Error>>
-    {
+    pub fn connect(
+        config: SessionConfig,
+        credentials: Credentials,
+        cache: Option<Cache>,
+        handle: Handle,
+    ) -> Box<Future<Item = Session, Error = io::Error>> {
         let access_point = apresolve_or_fallback::<io::Error>(&handle);
 
-
         let handle_ = handle.clone();
         let connection = access_point.and_then(move |addr| {
             info!("Connecting to AP \"{}\"", addr);
@@ -66,9 +67,8 @@ impl Session {
         });
 
         let device_id = config.device_id.clone();
-        let authentication = connection.and_then(move |connection| {
-            connection::authenticate(connection, credentials, device_id)
-        });
+        let authentication = connection
+            .and_then(move |connection| connection::authenticate(connection, credentials, device_id));
 
         let result = authentication.map(move |(transport, reusable_credentials)| {
             info!("Authenticated as \"{}\" !", reusable_credentials.username);
@@ -77,21 +77,28 @@ impl Session {
             }
 
             let (session, task) = Session::create(
-                &handle, transport, config, cache, reusable_credentials.username.clone()
+                &handle,
+                transport,
+                config,
+                cache,
+                reusable_credentials.username.clone(),
             );
 
             handle.spawn(task.map_err(|e| panic!(e)));
 
             session
         });
-        
+
         Box::new(result)
     }
 
-    fn create(handle: &Handle, transport: connection::Transport,
-              config: SessionConfig, cache: Option<Cache>, username: String)
-        -> (Session, Box<Future<Item = (), Error = io::Error>>)
-    {
+    fn create(
+        handle: &Handle,
+        transport: connection::Transport,
+        config: SessionConfig,
+        cache: Option<Cache>,
+        username: String,
+    ) -> (Session, Box<Future<Item = (), Error = io::Error>>) {
         let (sink, stream) = transport.split();
 
         let (sender_tx, sender_rx) = mpsc::unbounded();
@@ -121,11 +128,15 @@ impl Session {
 
         let sender_task = sender_rx
             .map_err(|e| -> io::Error { panic!(e) })
-            .forward(sink).map(|_| ());
+            .forward(sink)
+            .map(|_| ());
         let receiver_task = DispatchTask(stream, session.weak());
 
-        let task = Box::new((receiver_task, sender_task).into_future()
-            .map(|((), ())| ()));
+        let task = Box::new(
+            (receiver_task, sender_task)
+                .into_future()
+                .map(|((), ())| ()),
+        );
 
         (session, task)
     }
@@ -143,16 +154,21 @@ impl Session {
     }
 
     pub fn spawn<F, R>(&self, f: F)
-        where F: FnOnce(&Handle) -> R + Send + 'static,
-              R: IntoFuture<Item=(), Error=()>,
-              R::Future: 'static
+    where
+        F: FnOnce(&Handle) -> R + Send + 'static,
+        R: IntoFuture<Item = (), Error = ()>,
+        R::Future: 'static,
     {
         self.0.handle.spawn(f)
     }
 
     fn debug_info(&self) {
-        debug!("Session[{}] strong={} weak={}",
-               self.0.session_id, Arc::strong_count(&self.0), Arc::weak_count(&self.0));
+        debug!(
+            "Session[{}] strong={} weak={}",
+            self.0.session_id,
+            Arc::strong_count(&self.0),
+            Arc::weak_count(&self.0)
+        );
     }
 
     #[cfg_attr(feature = "cargo-clippy", allow(match_same_arms))]
@@ -161,7 +177,7 @@ impl Session {
             0x4 => {
                 self.debug_info();
                 self.send_packet(0x49, data.as_ref().to_owned());
-            },
+            }
             0x4a => (),
             0x1b => {
                 let country = String::from_utf8(data.as_ref().to_owned()).unwrap();
@@ -229,10 +245,12 @@ impl Drop for SessionInternal {
 }
 
 struct DispatchTask<S>(S, SessionWeak)
-    where S: Stream<Item = (u8, Bytes)>;
+where
+    S: Stream<Item = (u8, Bytes)>;
 
-impl <S> Future for DispatchTask<S>
-    where S: Stream<Item = (u8, Bytes)>
+impl<S> Future for DispatchTask<S>
+where
+    S: Stream<Item = (u8, Bytes)>,
 {
     type Item = ();
     type Error = S::Error;
@@ -240,9 +258,7 @@ impl <S> Future for DispatchTask<S>
     fn poll(&mut self) -> Poll<Self::Item, Self::Error> {
         let session = match self.1.try_upgrade() {
             Some(session) => session,
-            None => {
-                return Ok(Async::Ready(()))
-            },
+            None => return Ok(Async::Ready(())),
         };
 
         loop {
@@ -252,8 +268,9 @@ impl <S> Future for DispatchTask<S>
     }
 }
 
-impl <S> Drop for DispatchTask<S>
-    where S: Stream<Item = (u8, Bytes)>
+impl<S> Drop for DispatchTask<S>
+where
+    S: Stream<Item = (u8, Bytes)>,
 {
     fn drop(&mut self) {
         debug!("drop Dispatch");
diff --git a/core/src/util/int128.rs b/core/src/util/int128.rs
index 9cfbaf3b..f79692ca 100644
--- a/core/src/util/int128.rs
+++ b/core/src/util/int128.rs
@@ -1,6 +1,6 @@
 use std;
 
-#[derive(Debug,Copy,Clone,PartialEq,Eq,Hash)]
+#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)]
 #[allow(non_camel_case_types)]
 pub struct u128 {
     high: u64,
@@ -28,12 +28,7 @@ impl std::ops::Add<u128> for u128 {
     type Output = u128;
     fn add(self, rhs: u128) -> u128 {
         let low = self.low + rhs.low;
-        let high = self.high + rhs.high +
-                   if low < self.low {
-            1
-        } else {
-            0
-        };
+        let high = self.high + rhs.high + if low < self.low { 1 } else { 0 };
 
         u128::from_parts(high, low)
     }
@@ -43,12 +38,7 @@ impl<'a> std::ops::Add<&'a u128> for u128 {
     type Output = u128;
     fn add(self, rhs: &'a u128) -> u128 {
         let low = self.low + rhs.low;
-        let high = self.high + rhs.high +
-                   if low < self.low {
-            1
-        } else {
-            0
-        };
+        let high = self.high + rhs.high + if low < self.low { 1 } else { 0 };
 
         u128::from_parts(high, low)
     }
@@ -60,20 +50,23 @@ impl std::convert::From<u8> for u128 {
     }
 }
 
-
 impl std::ops::Mul<u128> for u128 {
     type Output = u128;
 
     fn mul(self, rhs: u128) -> u128 {
-        let top: [u64; 4] = [self.high >> 32,
-                             self.high & 0xFFFFFFFF,
-                             self.low >> 32,
-                             self.low & 0xFFFFFFFF];
+        let top: [u64; 4] = [
+            self.high >> 32,
+            self.high & 0xFFFFFFFF,
+            self.low >> 32,
+            self.low & 0xFFFFFFFF,
+        ];
 
-        let bottom: [u64; 4] = [rhs.high >> 32,
-                                rhs.high & 0xFFFFFFFF,
-                                rhs.low >> 32,
-                                rhs.low & 0xFFFFFFFF];
+        let bottom: [u64; 4] = [
+            rhs.high >> 32,
+            rhs.high & 0xFFFFFFFF,
+            rhs.low >> 32,
+            rhs.low & 0xFFFFFFFF,
+        ];
 
         let mut rows = [u128::zero(); 16];
         for i in 0..4 {
diff --git a/core/src/util/mod.rs b/core/src/util/mod.rs
index 6e21a0f2..66f2fe3f 100644
--- a/core/src/util/mod.rs
+++ b/core/src/util/mod.rs
@@ -1,7 +1,7 @@
 use num_bigint::BigUint;
-use num_traits::{Zero, One};
 use num_integer::Integer;
-use rand::{Rng, Rand};
+use num_traits::{One, Zero};
+use rand::{Rand, Rng};
 use std::mem;
 use std::ops::{Mul, Rem, Shr};
 
@@ -9,7 +9,7 @@ mod int128;
 mod spotify_id;
 
 pub use util::int128::u128;
-pub use util::spotify_id::{SpotifyId, FileId};
+pub use util::spotify_id::{FileId, SpotifyId};
 
 pub fn rand_vec<G: Rng, R: Rand>(rng: &mut G, size: usize) -> Vec<R> {
     rng.gen_iter().take(size).collect()
@@ -57,8 +57,8 @@ impl<'s> Iterator for StrChunks<'s> {
     }
 }
 
-pub trait ReadSeek : ::std::io::Read + ::std::io::Seek { }
-impl <T: ::std::io::Read + ::std::io::Seek> ReadSeek for T { }
+pub trait ReadSeek: ::std::io::Read + ::std::io::Seek {}
+impl<T: ::std::io::Read + ::std::io::Seek> ReadSeek for T {}
 
 pub trait Seq {
     fn next(&self) -> Self;
@@ -77,7 +77,7 @@ impl_seq!(u8 u16 u32 u64 usize);
 #[derive(Debug, Clone, Copy, Hash, PartialEq, Eq, PartialOrd, Ord, Default)]
 pub struct SeqGenerator<T: Seq>(T);
 
-impl <T: Seq> SeqGenerator<T> {
+impl<T: Seq> SeqGenerator<T> {
     pub fn new(value: T) -> Self {
         SeqGenerator(value)
     }
diff --git a/core/src/util/spotify_id.rs b/core/src/util/spotify_id.rs
index 8ebd5a84..5d99cb67 100644
--- a/core/src/util/spotify_id.rs
+++ b/core/src/util/spotify_id.rs
@@ -1,16 +1,15 @@
+use byteorder::{BigEndian, ByteOrder};
 use std;
 use std::fmt;
 use util::u128;
-use byteorder::{BigEndian, ByteOrder};
 // Unneeded since 1.21
 #[allow(unused_imports)]
 use std::ascii::AsciiExt;
 
-#[derive(Debug,Copy,Clone,PartialEq,Eq,Hash)]
+#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)]
 pub struct SpotifyId(u128);
 
-const BASE62_DIGITS: &'static [u8] =
-    b"0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
+const BASE62_DIGITS: &'static [u8] = b"0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
 const BASE16_DIGITS: &'static [u8] = b"0123456789abcdef";
 
 impl SpotifyId {
@@ -79,7 +78,7 @@ impl SpotifyId {
     }
 }
 
-#[derive(Copy,Clone,PartialEq,Eq,PartialOrd,Ord,Hash)]
+#[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
 pub struct FileId(pub [u8; 20]);
 
 impl FileId {