在尝试使用rvm安装ruby时出现以下错误：
$rvm install 1.9.3 Searching for binary rubies,this might take some time. Checking requirements for ubuntu. Installing requirements for ubuntu. Updating system.................................................................................................. Error running 'requirements_debian_update_system ruby-1.9.3-p448',please read /home/troy/.rvm/log/1379872584_ruby-1.9.3-p448/update_system.log Requirements installation Failed with status: 100.
你可以帮我吗