var os.Stderr

4 uses

	os (current package)
		file.go#L74: 	Stderr = NewFile(uintptr(syscall.Stderr), "/dev/stderr")

	github.com/refraction-networking/utls
		u_clienthello_json.go#L167: 	fmt.Fprint(os.Stderr, warningMsg)

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

	runtime/debug
		stack.go#L18: 	os.Stderr.Write(Stack())

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