# File lib/bacon.rb, line 24
  def self.summary_on_exit
    return  if Counter[:installed_summary] > 0
    @timer = Time.now
    at_exit {
      handle_summary
      if $!
        raise $!
      elsif Counter[:errors] + Counter[:failed] > 0
        exit 1
      end
    }
    Counter[:installed_summary] += 1
  end