message: Fix import order in `in_memory_network`
diff: @@ -284,7 +284,7 @@ use std::{
  cell::RefCell,
  collections::{HashMap, HashSet},
  convert::Infallible,
  - fmt::{self, Display},
  + fmt::{self, Display, Formatter},
  sync::{Arc, RwLock},
  };
  @@ -304,7 +304,6 @@ use crate::{
  types::NodeId,
  NodeRng,
  };
  -use fmt::Formatter;
  /// A network.
  type Network<P> = Arc<RwLock<HashMap<NodeId, mpsc::UnboundedSender<(NodeId, P)>>>>;
  