安装Gitlab一切都很好，但安装宝石时 ，它显示错误
:/home/git/gitlab# sudo gem install charlock_holmes --version '0.6.9.4'
Building native extensions. This could take a while...
Successfully installed charlock_holmes-0.6.9.4
1 gem installed
Installing ri documentation for charlock_holmes-0.6.9.4...
unable to convert "\xE0" from ASCII-8BIT to UTF-8 for lib/usr/local/lib/ruby/site_ruby/2.0.0/i686-linux/charlock_holmes/charlock_holmes.so, skipping
ERROR: While executing gem ... (NoMethodError)
undefined method `map' for Gem::Specification:Class