git：使用Capistrano部署rails app时找不到

Question

通过Capistrano部署到我的生产服务器时，我收到以下错误

runs bundle install
    git: not found
*** [err :: 192.241.188.227] 
 ** [out :: 192.241.188.227] Git error: command `git clone
 ** [out :: 192.241.188.227] 'http://github.com/seyhunak/twitter-bootstrap-rails.git'
 ** [out :: 192.241.188.227] "/home/rails/shared/bundle/ruby/2.0.0/cache/bundler/git/twitter-bootstrap-rails-8f29c1fbdcb3b4ce0a576f6b5ec783bc3a7826da"
 ** [out :: 192.241.188.227] --bare --no-hardlinks --quiet` in directory /home/rails/releases/20140427184415
 ** [out :: 192.241.188.227] has failed.

这是我在Gemfile中包含的内容     gem'trip-bootstrap-rails',: git =＆gt; 'http://github.com/seyhunak/twitter-bootstrap-rails.git',: branch =＆gt; 'bootstrap3'

它在开发机器上完美运行。

任何可能导致此问题的想法？