fixed warnings

src/crypto/openssl.rs

@@ -242,7 +242,7 @@ impl OpenSSLCrypto {
 
             debug_assert!(iv.len() >= cipher_type.block_size());
             debug_assert!(key.len() == cipher_type.key_size());
-            let mut evp_ctx = ffi::EVP_CIPHER_CTX_new();
+            let evp_ctx = ffi::EVP_CIPHER_CTX_new();
             assert!(!evp_ctx.is_null());
 
             let op = match mode {

src/relay/tcprelay/cached_dns.rs

@@ -26,8 +26,6 @@ use std::io::net::ip::IpAddr;
 
 use collect::LruCache;
 
-use config::DEFAULT_DNS_CACHE_CAPACITY;
-
 const TASK_POOL_SIZE: usize = 4;
 
 struct DnsLruCache {

src/relay/tcprelay/server.rs

@@ -121,7 +121,7 @@ impl TcpRelayServer {
                 );
 
                 info!("Connecting to {}", addr);
-                let mut remote_stream = match addr {
+                let remote_stream = match addr {
                     Address::SocketAddress(ip, port) => {
                         try_result!(TcpStream::connect_timeout(SocketAddr {ip: ip, port: port}, Duration::seconds(30)),
                                 prefix: format!("Unable to connect {}:", addr)

src/relay/tcprelay/stream.rs

@@ -19,6 +19,8 @@
 // IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 // CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
+#![allow(dead_code)]
+
 use std::io::{IoResult, IoError, IoErrorKind};
 use std::cmp;
 use std::slice;