instance method log_failsafe_exception

# File actionpack/lib/action_controller/failsafe.rb, line 72
      def log_failsafe_exception(exception)
        message = "/!\\ FAILSAFE /!\\  #{Time.now}\n  Status: 500 Internal Server Error\n"
        message << "  #{exception}\n    #{exception.backtrace.join("\n    ")}" if exception
        failsafe_logger.fatal(message)
        failsafe_logger.flush if failsafe_logger.respond_to?(:flush)
      end