Update to latest substrate master (#853)

* try to update

* latest updates

* final fixes

* Fix claim w/ vesting logic

* Make claim tests a bit better

Co-authored-by: Shawn Tabrizi <shawntabrizi@gmail.com>

polkadot/network/src/legacy/gossip/mod.rs

@@ -283,11 +283,19 @@ pub fn register_validator<C: ChainContext + 'static, S: NetworkSpecialization<Bl
 	let gossip_side = validator.clone();
 	let gossip_engine = sc_network_gossip::GossipEngine::new(
 		service.clone(),
-		executor,
 		POLKADOT_ENGINE_ID,
 		gossip_side,
 	);
 
+	// Ideally this would not be spawned as an orphaned task, but polled by
+	// `RegisteredMessageValidator` which in turn would be polled by a `ValidationNetwork`.
+	let spawn_res = executor.spawn_obj(futures::task::FutureObj::from(Box::new(gossip_engine.clone())));
+
+	// Note: we consider the chances of an error to spawn a background task almost null.
+	if spawn_res.is_err() {
+		log::error!(target: "polkadot-gossip", "Failed to spawn background task");
+	}
+
 	RegisteredMessageValidator {
 		inner: validator as _,
 		service: Some(service),