cargo fix and some test fixes

beacon_node/network/src/sync/manager.rs

@@ -53,7 +53,7 @@ use std::ops::Sub;
 use std::sync::Arc;
 use std::time::Duration;
 use tokio::sync::mpsc;
-use types::{BlobsSidecar, Epoch, EthSpec, Hash256, SignedBeaconBlock, Slot};
+use types::{BlobsSidecar, EthSpec, Hash256, SignedBeaconBlock, Slot};
 
 /// The number of slots ahead of us that is allowed before requesting a long-range (batch)  Sync
 /// from a peer. If a peer is within this tolerance (forwards or backwards), it is treated as a