var os.Stderr

7 uses

	os (current package)
		file.go#L67: 	Stderr = NewFile(uintptr(syscall.Stderr), "/dev/stderr")

	flag
		flag.go#L433: 		return os.Stderr

	go.uber.org/zap
		global.go#L137: 		log.SetOutput(os.Stderr)
		logger.go#L74: 		errorOutput: zapcore.Lock(os.Stderr),
		sink.go#L156: 		return nopCloserSink{os.Stderr}, nil

	log
		log.go#L87: var std = New(os.Stderr, "", LstdFlags)

	runtime/debug
		stack.go#L16: 	os.Stderr.Write(Stack())

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