问题：

perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
	LANGUAGE = (unset),
	LC_ALL = (unset),
	LC_CTYPE = "zh_CN.UTF-8",
	LC_TERMINAL_VERSION = "3.3.3beta2",
	LC_TERMINAL = "iTerm2",
	LANG = "en_US.utf8"
    are supported and installed on your system.

方法

export LC_ALL=C