message: RustwideBuilder: if a crate is blacklsited, log info and return
diff: @@ -245,7 +245,8 @@ impl RustwideBuilder {
  let conn = connect_db()?;
  if is_blacklisted(&conn, name)? {
  - return Err(::failure::err_msg("crate is on the blacklist"));
  + info!("skipping build of {}, crate has been blacklisted", name);
  + return Ok(false);
  }
  let limits = Limits::for_crate(&conn, name)?;
  