diff --git a/beacon_node/client/src/lib.rs b/beacon_node/client/src/lib.rs
index 807fd9301e..6b4277c264 100644
--- a/beacon_node/client/src/lib.rs
+++ b/beacon_node/client/src/lib.rs
@@ -15,13 +15,11 @@ use futures::{future::Future, Stream};
 use network::Service as NetworkService;
 use slog::{error, info, o};
 use slot_clock::SlotClock;
-use ssz::TreeHash;
 use std::marker::PhantomData;
 use std::sync::Arc;
 use std::time::{Duration, Instant};
 use tokio::runtime::TaskExecutor;
 use tokio::timer::Interval;
-use types::Hash256;
 
 /// Main beacon node client service. This provides the connection and initialisation of the clients
 /// sub-services in multiple threads.
diff --git a/beacon_node/eth2-libp2p/src/rpc/methods.rs b/beacon_node/eth2-libp2p/src/rpc/methods.rs
index f9adb93c17..dc0be19a92 100644
--- a/beacon_node/eth2-libp2p/src/rpc/methods.rs
+++ b/beacon_node/eth2-libp2p/src/rpc/methods.rs
@@ -1,7 +1,7 @@
 use ssz::{Decodable, DecodeError, Encodable, SszStream};
 /// Available RPC methods types and ids.
 use ssz_derive::{Decode, Encode};
-use types::{Attestation, BeaconBlockBody, BeaconBlockHeader, Epoch, Hash256, Slot};
+use types::{BeaconBlockBody, BeaconBlockHeader, Epoch, Hash256, Slot};
 
 #[derive(Debug)]
 /// Available Serenity Libp2p RPC methods
diff --git a/beacon_node/rpc/src/validator.rs b/beacon_node/rpc/src/validator.rs
index 0a9d7015c9..4511a8913e 100644
--- a/beacon_node/rpc/src/validator.rs
+++ b/beacon_node/rpc/src/validator.rs
@@ -83,7 +83,7 @@ impl ValidatorService for ValidatorServiceInstance {
                             RpcStatusCode::InvalidArgument,
                             Some("Invalid public_key".to_string()),
                         ))
-                        .map_err(move |e| warn!(log_clone, "failed to reply {:?}", req));
+                        .map_err(move |_| warn!(log_clone, "failed to reply {:?}", req));
                     return ctx.spawn(f);
                 }
             };