env.rb

# lines 83-96
  def run(command)
    stderr_file = Tempfile.new('cucumber')
    stderr_file.close
    in_current_dir do
      @last_stdout = `#{command} 2> #{stderr_file.path}`
      mode = Cucumber::RUBY_1_9 ? {:external_encoding=>"UTF-8"} : 'r'
      IO.popen("#{command} 2> #{stderr_file.path}", mode) do |io|
        @last_stdout = io.read
      end

      @last_exit_status = $?.exitstatus
    end
    @last_stderr = IO.read(stderr_file.path)
  end