message: Fixes issue with metrics source
diff: @@ -121,9 +121,10 @@ the console and open "localhost:6006" in a browser'.format(
  # - Push current model parameters to this participant
  # - Train for a number of epochs
  # - Pull updated model parameters from participant
  - theta_update, hist, metrics = participant.train_round(
  + theta_update, hist = participant.train_round(
  theta, epochs=E, epoch_base=self.epoch
  )
  + metrics = participant.metrics()
  theta_updates.append(theta_update)
  histories.append(hist)
  train_metrics.append(metrics)
  