Fix several compile warnings added in some of my recent commits

lightning/src/ln/channelmanager.rs

@@ -46,7 +46,6 @@ use ln::channel::{Channel, ChannelError, ChannelUpdateStatus, UpdateFulfillCommi
 use ln::features::{ChannelTypeFeatures, InitFeatures, NodeFeatures};
 use routing::router::{PaymentParameters, Route, RouteHop, RoutePath, RouteParameters};
 use ln::msgs;
-use ln::msgs::NetAddress;
 use ln::onion_utils;
 use ln::msgs::{ChannelMessageHandler, DecodeError, LightningError, MAX_VALUE_MSAT};
 use ln::wire::Encode;

lightning/src/routing/gossip.rs

@@ -197,6 +197,7 @@ where C::Target: chain::Access, L::Target: Logger
 {
 	network_graph: G,
 	chain_access: Option<C>,
+	#[cfg(feature = "std")]
 	full_syncs_requested: AtomicUsize,
 	pending_events: Mutex<Vec<MessageSendEvent>>,
 	logger: L,
@@ -213,6 +214,7 @@ where C::Target: chain::Access, L::Target: Logger
 	pub fn new(network_graph: G, chain_access: Option<C>, logger: L) -> Self {
 		P2PGossipSync {
 			network_graph,
+			#[cfg(feature = "std")]
 			full_syncs_requested: AtomicUsize::new(0),
 			chain_access,
 			pending_events: Mutex::new(vec![]),
@@ -235,6 +237,7 @@ where C::Target: chain::Access, L::Target: Logger
 		&self.network_graph
 	}
 
+	#[cfg(feature = "std")]
 	/// Returns true when a full routing table sync should be performed with a peer.
 	fn should_request_full_sync(&self, _node_id: &PublicKey) -> bool {
 		//TODO: Determine whether to request a full sync based on the network map.
@@ -421,13 +424,12 @@ where C::Target: chain::Access, L::Target: Logger
 		// `gossip_timestamp_filter`, with the filter time set either two weeks ago or an hour ago.
 		//
 		// For no-std builds, we bury our head in the sand and do a full sync on each connection.
-		let should_request_full_sync = self.should_request_full_sync(&their_node_id);
 		#[allow(unused_mut, unused_assignments)]
 		let mut gossip_start_time = 0;
 		#[cfg(feature = "std")]
 		{
 			gossip_start_time = SystemTime::now().duration_since(UNIX_EPOCH).expect("Time must be > 1970").as_secs();
-			if should_request_full_sync {
+			if self.should_request_full_sync(&their_node_id) {
 				gossip_start_time -= 60 * 60 * 24 * 7 * 2; // 2 weeks ago
 			} else {
 				gossip_start_time -= 60 * 60; // an hour ago
@@ -1862,7 +1864,7 @@ mod tests {
 	use ln::PaymentHash;
 	use ln::features::{ChannelFeatures, InitFeatures, NodeFeatures};
 	use routing::gossip::{P2PGossipSync, NetworkGraph, NetworkUpdate, NodeAlias, MAX_EXCESS_BYTES_FOR_RELAY, NodeId, RoutingFees, ChannelUpdateInfo, ChannelInfo, NodeAnnouncementInfo, NodeInfo};
-	use ln::msgs::{Init, RoutingMessageHandler, UnsignedNodeAnnouncement, NodeAnnouncement,
+	use ln::msgs::{RoutingMessageHandler, UnsignedNodeAnnouncement, NodeAnnouncement,
 		UnsignedChannelAnnouncement, ChannelAnnouncement, UnsignedChannelUpdate, ChannelUpdate,
 		ReplyChannelRange, QueryChannelRange, QueryShortChannelIds, MAX_VALUE_MSAT};
 	use util::test_utils;
@@ -1906,6 +1908,7 @@ mod tests {
 	}
 
 	#[test]
+	#[cfg(feature = "std")]
 	fn request_full_sync_finite_times() {
 		let network_graph = create_network_graph();
 		let (secp_ctx, gossip_sync) = create_gossip_sync(&network_graph);
@@ -2593,6 +2596,7 @@ mod tests {
 	#[cfg(feature = "std")]
 	fn calling_sync_routing_table() {
 		use std::time::{SystemTime, UNIX_EPOCH};
+		use ln::msgs::Init;
 
 		let network_graph = create_network_graph();
 		let (secp_ctx, gossip_sync) = create_gossip_sync(&network_graph);

lightning/src/util/test_utils.rs

@@ -287,9 +287,9 @@ impl TestChannelMessageHandler {
 
 impl Drop for TestChannelMessageHandler {
 	fn drop(&mut self) {
-		let l = self.expected_recv_msgs.lock().unwrap();
 		#[cfg(feature = "std")]
 		{
+			let l = self.expected_recv_msgs.lock().unwrap();
 			if !std::thread::panicking() {
 				assert!(l.is_none() || l.as_ref().unwrap().is_empty());
 			}
@@ -470,14 +470,12 @@ impl msgs::RoutingMessageHandler for TestRoutingMessageHandler {
 			return ();
 		}
 
-		let should_request_full_sync = self.request_full_sync.load(Ordering::Acquire);
-
 		#[allow(unused_mut, unused_assignments)]
 		let mut gossip_start_time = 0;
 		#[cfg(feature = "std")]
 		{
 			gossip_start_time = SystemTime::now().duration_since(UNIX_EPOCH).expect("Time must be > 1970").as_secs();
-			if should_request_full_sync {
+			if self.request_full_sync.load(Ordering::Acquire) {
 				gossip_start_time -= 60 * 60 * 24 * 7 * 2; // 2 weeks ago
 			} else {
 				gossip_start_time -= 60 * 60; // an hour ago

lightning/src/util/wakers.rs

@@ -15,19 +15,17 @@
 
 use alloc::sync::Arc;
 use core::mem;
-use core::time::Duration;
 use sync::{Condvar, Mutex};
 
-use prelude::{Box, Vec};
+use prelude::*;
 
 #[cfg(any(test, feature = "std"))]
-use std::time::Instant;
+use std::time::{Duration, Instant};
 
 use core::future::Future as StdFuture;
 use core::task::{Context, Poll};
 use core::pin::Pin;
 
-use prelude::*;
 
 /// Used to signal to one of many waiters that the condition they're waiting on has happened.
 pub(crate) struct Notifier {
@@ -294,7 +292,7 @@ mod tests {
 	// waker, which we do here with a trivial Arc<AtomicBool> data element to track woke-ness.
 	const WAKER_V_TABLE: RawWakerVTable = RawWakerVTable::new(waker_clone, wake, wake_by_ref, drop);
 	unsafe fn wake_by_ref(ptr: *const ()) { let p = ptr as *const Arc<AtomicBool>; assert!(!(*p).fetch_or(true, Ordering::SeqCst)); }
-	unsafe fn drop(ptr: *const ()) { let p = ptr as *mut Arc<AtomicBool>; Box::from_raw(p); }
+	unsafe fn drop(ptr: *const ()) { let p = ptr as *mut Arc<AtomicBool>; let _freed = Box::from_raw(p); }
 	unsafe fn wake(ptr: *const ()) { wake_by_ref(ptr); drop(ptr); }
 	unsafe fn waker_clone(ptr: *const ()) -> RawWaker {
 		let p = ptr as *const Arc<AtomicBool>;