ruby-on-rails – 使用capistrano在track app上部署ruby – cap

我已经浪费了几天这个问题,我确信这是一个简单的解决方案,请帮忙！
当我运行$cap deploy：从我的笔记本电脑上的用户帐户进行设置时,我得到了下面粘贴的错误.似乎RVM存在问题,但我知道它已安装,我已预先安装了我的应用程序所需的所有宝石.有没有其他人遇到类似的错误？任何帮助将非常感谢！

* executing `deploy:setup'
  * executing "mkdir -p /usr/local/www/sites/arbiter.nullpointer.ca/public/ /usr/local/www/sites/arbiter.nullpointer.ca/public/releases /usr/local/www/sites/arbiter.nullpointer.ca/public/shared /usr/local/www/sites/arbiter.nullpointer.ca/public/shared/system /usr/local/www/sites/arbiter.nullpointer.ca/public/shared/log /usr/local/www/sites/arbiter.nullpointer.ca/public/shared/pids &&  chmod g+w /usr/local/www/sites/arbiter.nullpointer.ca/public/ /usr/local/www/sites/arbiter.nullpointer.ca/public/releases /usr/local/www/sites/arbiter.nullpointer.ca/public/shared /usr/local/www/sites/arbiter.nullpointer.ca/public/shared/system /usr/local/www/sites/arbiter.nullpointer.ca/public/shared/log /usr/local/www/sites/arbiter.nullpointer.ca/public/shared/pids"
    servers: ["arbiter.nullpointer.ca"]
    [arbiter.nullpointer.ca] executing command
 ** [out :: arbiter.nullpointer.ca] 
 ** [out :: arbiter.nullpointer.ca] $rvm_path (system_wide) does not exist.
*** [err :: arbiter.nullpointer.ca] /usr/local/rvm/scripts/rvm: line 154: __rvm_teardown: command not found
*** [err :: arbiter.nullpointer.ca] /usr/local/rvm/bin/rvm-shell: line 74: rvm: command not found
*** [err :: arbiter.nullpointer.ca] Error: RVM was unable to use 'default'
    command finished
failed: "rvm_path=system_wide /usr/local/rvm/bin/rvm-shell 'default' -c "mkdir -p /usr/local/www/sites/arbiter.nullpointer.ca/public/ /usr/local/www/sites/arbiter.nullpointer.ca/public/releases /usr/local/www/sites/arbiter.nullpointer.ca/public/shared /usr/local/www/sites/arbiter.nullpointer.ca/public/shared/system /usr/local/www/sites/arbiter.nullpointer.ca/public/shared/log /usr/local/www/sites/arbiter.nullpointer.ca/public/shared/pids &&  chmod g+w /usr/local/www/sites/arbiter.nullpointer.ca/public/ /usr/local/www/sites/arbiter.nullpointer.ca/public/releases /usr/local/www/sites/arbiter.nullpointer.ca/public/shared /usr/local/www/sites/arbiter.nullpointer.ca/public/shared/system /usr/local/www/sites/arbiter.nullpointer.ca/public/shared/log /usr/local/www/sites/arbiter.nullpointer.ca/public/shared/pids"" on arbiter.nullpointer.ca

out :: server]
** [out :: server] $rvm_path (/home/nebula/.rvm/) does not exist.
*** [err :: server] /usr/local/rvm/scripts/rvm: line 185: __rvm_teardown: command not found
*** [err :: server] /usr/local/rvm/bin/rvm: line 52: /home/nebula/.rvm//scripts/rvm: No such file or directory
*** [err :: server] Error sourcing RVM!
*** [err :: server] Error: RVM was unable to use 'ruby-1.9.3-p392'

set :rvm_type,:system
set :rvm_path,"/usr/local/rvm"