message: add/fix logging statements
diff: @@ -500,7 +500,7 @@ impl Default for Search {
  fn redirect_to_random_crate(req: &Request, conn: &mut PoolClient) -> IronResult<Response> {
  // since there is a chance of this query returning an empty result,
  // we retry a certain amount of times, and log a warning.
  - for _ in 0..20 {
  + for i in 0..20 {
  let rows = ctry!(
  req,
  conn.query(
  @@ -550,12 +550,13 @@ fn redirect_to_random_crate(req: &Request, conn: &mut PoolClient) -> IronResult<
  let mut resp = Response::with((status::Found, Redirect(url)));
  resp.headers.set(Expires(HttpDate(time::now())));
  + log::debug!("finished random crate search on iteration {}", i);
  return Ok(resp);
  } else {
  - ::log::warn!("retrying random crate search");
  + log::warn!("retrying random crate search");
  }
  }
  - ::log::error!("found no result in random crate search");
  + log::error!("found no result in random crate search");
  Err(Nope::NoResults.into())
  }
  