message: Attach event span to spawned server
diff: @@ -307,11 +307,14 @@ where
  let (server_shutdown_sender, server_shutdown_receiver) = watch::channel(());
  let shutdown_receiver = server_shutdown_receiver.clone();
  - let server_join_handle = tokio::spawn(tasks::server(
  + let server_join_handle = tokio::spawn(
  + tasks::server(
  context.clone(),
  tokio::net::TcpListener::from_std(listener).map_err(Error::ListenerConversion)?,
  server_shutdown_receiver,
  - ));
  + )
  + .in_current_span(),
  + );
  let mut component = SmallNetwork {
  cfg,
  