Php ubuntu 14.04中的capistrano设置冲突

我尝试设置Capistrano部署-但有错误

环境是Ubuntu 14.04

红宝石： ruby-v ruby 2.2.6p396（2016-11-15修订版56800）[x86_64-linux-gnu]

gem install capistrano
Successfully installed capistrano-3.7.2
Parsing documentation for capistrano-3.7.2
Done installing documentation for capistrano after 1 seconds
1 gem installed



root@grek-Inspiron-11-3147:/tmp# gem install capifony
Successfully installed capifony-2.8.6
Parsing documentation for capifony-2.8.6
Done installing documentation for capifony after 1 seconds
1 gem installed

capifony .
[skip] './Capfile' already exists
[skip] './app/config/deploy.rb' already exists
[done] symfony 2 project capifonied!

我设置了参数

然后

cap部署：设置
（回溯仅限于导入的任务）
帽子流产了！
Gem:：ConflictError:无法激活CapiOny-2.8.6，因为capistrano-3.7.2与capistrano（=2.13.5）冲突
/home/grek/PhpstormProjects/osiedle/Capfile:3:in`'
Gem:：ConflictError:无法激活CapiOny-2.8.6，因为capistrano-3.7.2与capistrano（=2.13.5）冲突
/home/grek/PhpstormProjects/osiedle/Capfile:3:in`'
LoadError:无法加载这样的文件--capifony_symfony2
/home/grek/PhpstormProjects/osiedle/Capfile:3:in`'
（通过使用--trace运行任务查看完整跟踪）

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如何解决此错误？

错误消息解释了问题：

capistrano-3.7.2 conflicts with capistrano (<= 2.16.0, >= 2.13.5)

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错误消息解释了问题：

capistrano-3.7.2 conflicts with capistrano (<= 2.16.0, >= 2.13.5)

gem uninstall capistrano
gem install capistrano -v "<= 2.16.0, >= 2.13.5"

Fetching: capistrano-2.15.9.gem (100%)
Successfully installed capistrano-2.15.9
1 gem installed