diff --git a/examples/echo-udp.rs b/examples/echo-udp.rs
index 9c6c9e279..631712070 100644
--- a/examples/echo-udp.rs
+++ b/examples/echo-udp.rs
@@ -11,7 +11,6 @@
 //! Each line you type in to the `nc` terminal should be echo'd back to you!
 
 extern crate futures;
-#[macro_use]
 extern crate tokio;
 #[macro_use]
 extern crate tokio_io;
diff --git a/src/lib.rs b/src/lib.rs
index fff2c0616..0cfb92d98 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -86,7 +86,6 @@
 #![doc(html_root_url = "https://docs.rs/tokio-core/0.1")]
 #![deny(missing_docs)]
 #![deny(warnings)]
-#![allow(unused_macros)]
 
 extern crate bytes;
 #[macro_use]
diff --git a/src/reactor/mod.rs b/src/reactor/mod.rs
index 694e1d3c7..ae4eb0168 100644
--- a/src/reactor/mod.rs
+++ b/src/reactor/mod.rs
@@ -360,16 +360,6 @@ impl Notify for MySetReadiness {
     }
 }
 
-trait FnBox: Send + 'static {
-    fn call_box(self: Box<Self>, lp: &Core);
-}
-
-impl<F: FnOnce(&Core) + Send + 'static> FnBox for F {
-    fn call_box(self: Box<Self>, lp: &Core) {
-        (*self)(lp)
-    }
-}
-
 fn read_ready() -> mio::Ready {
     mio::Ready::readable() | platform::hup()
 }
diff --git a/src/reactor/poll_evented.rs b/src/reactor/poll_evented.rs
index aa19803f0..5b23cf2e2 100644
--- a/src/reactor/poll_evented.rs
+++ b/src/reactor/poll_evented.rs
@@ -69,7 +69,7 @@ pub struct PollEvented<E> {
     io: E,
 }
 
-impl<E: Evented + fmt::Debug> fmt::Debug for PollEvented<E> {
+impl<E: fmt::Debug> fmt::Debug for PollEvented<E> {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         f.debug_struct("PollEvented")
          .field("io", &self.io)
@@ -111,8 +111,7 @@ impl<E: Evented> PollEvented<E> {
             None => return Ok(()),
         };
 
-        let ret = inner.deregister_source(&self.io);
-        return ret
+        inner.deregister_source(&self.io)
     }
 }
 
diff --git a/tests/udp.rs b/tests/udp.rs
index e22af9347..4cc552ff2 100644
--- a/tests/udp.rs
+++ b/tests/udp.rs
@@ -1,5 +1,4 @@
 extern crate futures;
-#[macro_use]
 extern crate tokio;
 #[macro_use]
 extern crate tokio_io;