log/log.go
func Fatalln(args ...interface{}) {
	logger.Output(2, LevelFatal, fmt.Sprintln(args...))
	os.Exit(1)
}
func Fatalln(args ...interface{}) {
	logger.Output(2, LevelFatal, fmt.Sprintln(args...))
	os.Exit(1)
}
// Fatalln records the log with fatal level and exits