use new io timeout branch

Cargo.toml

@@ -64,4 +64,4 @@ libc = "^0.2.7"
 
 [dependencies.coio]
 git = "https://github.com/zonyitoo/coio-rs.git"
-branch = "feature-timeout"
+branch = "io-timeouts"

src/relay/tcprelay/local.rs

@@ -335,7 +335,7 @@ impl TcpRelayLocal {
         let mut cached_proxy: BTreeMap<String, SocketAddr> = BTreeMap::new();
 
         for s in acceptor.incoming() {
-            let mut stream = match s {
+            let stream = match s {
                 Ok((s, addr)) => {
                     debug!("Got connection from client {:?}", addr);
                     s