message: aggregator: log a warning when rejecting a download or upload
diff: @@ -124,7 +124,7 @@ where
  {
  let _ = response_tx.send(self.global_weights.clone());
  } else {
  - debug!("rejecting download request");
  + warn!("rejecting download request");
  }
  }
  @@ -138,7 +138,7 @@ where
  .unwrap_or(false);
  if !accept_upload {
  - debug!("rejecting upload request");
  + warn!("rejecting upload request");
  return;
  }
  