remove warning

src/lib.rs

@@ -4,7 +4,7 @@
 #![allow(dead_code)]
 
 use std::io::{Error, ErrorKind};
-use std::io::{Read, Result};
+use std::io::Result;
 
 use std::net::{Ipv4Addr, Ipv6Addr};
 

src/main.rs

@@ -18,7 +18,7 @@ use std::env;
 use std::net::{IpAddr, SocketAddr};
 use std::path::PathBuf;
 use std::process::Command;
-use std::time::{Duration, Instant};
+use std::time::Duration;
 use watch::Watch;
 
 const CONFIG_NAME: &str = ".updns";