THIS WORKS BUT IS UGLY AND I DON'T CARE

src/main.rs

@@ -6,7 +6,7 @@ mod systems;
 
 use crate::config::Settings;
 use crate::game::Game;
-use crate::network::{listen, NetworkManager};
+use crate::network::listen;
 use async_std::sync::Arc;
 use async_std::{sync::channel, task};
 use env_logger::Env;

src/network.rs

@@ -34,17 +34,19 @@ impl NetworkManager {
 		self.connections.insert(conn.conn_id, conn);
 	}
 
-	async fn send(&self, message: NetworkMessage) {
+	async fn send(&mut self, message: NetworkMessage) {
 		let conn = self
 			.connections
-			.get(&message.conn_id)
+			.get_mut(&message.conn_id)
 			.expect("cant send message to an unregistered connection");
-		conn.stream.send(message.data).await;
+		conn.stream
+			.send(message.data)
+			.await
+			.expect("could not send message to connection");
 	}
 }
 
 pub async fn listen(
-	net: Arc<NetworkManager>,
 	bind: String,
 	incoming: Sender<NetworkMessage>,
 	outgoing: Receiver<NetworkMessage>,