ruby autotest安装问题
安装autotest时报以下错误是什么原因呢，在线等～～谢谢
Invalid gemspec in [/var/lib/gems/1.9.1/specifications/ZenTest-4.11.0.gemspec]: Illformed requirement ["< 3.0, >= 1.8"]
Invalid gemspec in [/usr/share/rubygems-integration/1.9.1/specifications/ZenTest-4.9.1.gemspec]: Illformed requirement ["< 2.1, >= 1.8"]
WARNING: Error fetching data: bad response Not Found 404 (http://ruby.taobao.org/latest_specs.4.8.gz)
ERROR: Could not find a valid gem 'ZenTest' (>= 0) in any repository
ERROR: Possible alternatives: ZenTest