Update to latest libp2p

beacon_node/eth2-libp2p/Cargo.toml

@@ -8,7 +8,7 @@ edition = "2018"
 beacon_chain =  { path = "../beacon_chain" }
 clap = "2.32.0"
 # SigP repository until PR is merged
-libp2p =  { git = "https://github.com/SigP/rust-libp2p", rev = "b3c32d9a821ae6cc89079499cc6e8a6bab0bffc3" }
+libp2p =  { git = "https://github.com/SigP/rust-libp2p", rev = "fb852bcc2b9b3935555cc93930e913cbec2b0688" }
 types = { path =  "../../eth2/types" }
 serde = "1.0"
 serde_derive = "1.0"

beacon_node/network/src/sync/simple_sync.rs

@@ -533,6 +533,11 @@ impl<T: BeaconChainTypes> SimpleSync<T> {
                     // Add this block to the queue
                     self.import_queue
                         .enqueue_full_blocks(vec![block], peer_id.clone());
+                    trace!(
+                        self.log,
+                        "NewGossipBlock";
+                        "peer" => format!("{:?}", peer_id),
+                    );
 
                     // Unless the parent is in the queue, request the parent block from the peer.
                     //