Use alloc for no_std builds

[rust-lightning] / lightning / src / routing / network_graph.rs

diff --git a/lightning/src/routing/network_graph.rs b/lightning/src/routing/network_graph.rs
index 16e0a978a91802c24dbb9ed1db49f960b5be0725..8e2dc9f7fa10c364e27dcd88eaf6bb9621936979 100644 (file)
--- a/lightning/src/routing/network_graph.rs
+++ b/lightning/src/routing/network_graph.rs
@@ -32,12 +32,12 @@ use util::logger::Logger;
 use util::events::{MessageSendEvent, MessageSendEventsProvider};
 use util::scid_utils::{block_from_scid, scid_from_parts, MAX_SCID_BLOCK};
 
+use prelude::*;
+use alloc::collections::{BTreeMap, btree_map::Entry as BtreeEntry};
 use core::{cmp, fmt};
 use std::sync::{RwLock, RwLockReadGuard};
 use core::sync::atomic::{AtomicUsize, Ordering};
 use std::sync::Mutex;
-use std::collections::BTreeMap;
-use std::collections::btree_map::Entry as BtreeEntry;
 use core::ops::Deref;
 use bitcoin::hashes::hex::ToHex;
 
@@ -1140,6 +1140,7 @@ mod tests {
        use bitcoin::secp256k1::key::{PublicKey, SecretKey};
        use bitcoin::secp256k1::{All, Secp256k1};
 
+       use prelude::*;
        use std::sync::Arc;
 
        fn create_net_graph_msg_handler() -> (Secp256k1<All>, NetGraphMsgHandler<Arc<test_utils::TestChainSource>, Arc<test_utils::TestLogger>>) {