message: remove a warning and reformat
diff: @@ -346,10 +346,7 @@ impl Pretty for genesis::Block {
  fn to_pretty(&self) -> Val {
  Val::Tree(vec![
  ("header".to_string(), self.header.to_pretty()),
  - (
  - "body".to_string(),
  - self.body.to_pretty(),
  - ),
  + ("body".to_string(), self.body.to_pretty()),
  (
  "extra".to_string(),
  Val::Raw(format!("TODO {:?}", self.extra)),
  @@ -360,8 +357,6 @@ impl Pretty for genesis::Block {
  #[cfg(test)]
  mod tests {
  - use std::vec::Vec;
  -
  use command::pretty::Val::*;
  use command::pretty::*;
  