message: Log in more detail if we are not voting in an era.
diff: @@ -270,6 +270,19 @@ where
  highway.activate_validator(our_id, secret, timestamp.max(start_time))
  } else {
  info!("not voting in era {}", era_id.0);
  + if start_time >= self.node_start_time {
  + info!(
  + "node was started at time {}, which is not earlier than the era start {}",
  + self.node_start_time, start_time
  + );
  + } else if min_end_time < timestamp {
  + info!(
  + "era started too long ago ({}; earliest end {}), current timestamp {}",
  + start_time, min_end_time, timestamp
  + );
  + } else {
  + info!("not a validator; our ID: {}", our_id);
  + }
  Vec::new()
  };
  