我尝试安装ruby 2.1.0，但是当install.sh正在运行时，我不断收到以下错误
Error running 'requirements_osx_brew_libs_install automake libtool gcc49 libyaml readline libksba',
showing last 15 lines of /usr/local/rvm/log/1433830031/package_install_automake_libtool_gcc49_libyaml_readline_libksba.log
+ case "$1" in
+ [[ -t 1 ]]
+ return 1
+ printf %b 'There were package installation errors, make sure to read the log.
Try `brew tap --repair` and make sure `brew doctor` looks reasonable.
我已经运行brew tap --repair命令，但没有解决任何问题。我也收到了以下警告
Check Homebrew requirements https://github.com/Homebrew/homebrew/wiki/Installation
+ case "$_system_version" in
+ return 1
Requirements installation failed with status: 1.
有人有什么想法吗？