ruby – Capifony数据库函数失败并出现`require’：无法加载此类

jeremykendall@isr-thinkpad-420s:~/dev/sites/app$cap develop database:move:to_remote
    triggering load callbacks
* executing `develop'
    triggering start callbacks for `database:move:to_remote'
* executing `multistage:ensure'
* executing `database:move:to_remote'
* executing `database:dump:local'
/home/jeremykendall/.rvm/rubies/ruby-1.9.3-p125/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require': cannot load such file -- FileUtils (LoadError)
        from /home/jeremykendall/.rvm/rubies/ruby-1.9.3-p125/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
        from /home/jeremykendall/.rvm/gems/ruby-1.9.3-p125@interperf/gems/capifony-2.1.5/lib/symfony2.rb:101:in `block (3 levels) in load'
        from /home/jeremykendall/.rvm/gems/ruby-1.9.3-p125@interperf/gems/capistrano-2.11.2/lib/capistrano/configuration/execution.rb:139:in `instance_eval'
        from /home/jeremykendall/.rvm/gems/ruby-1.9.3-p125@interperf/gems/capistrano-2.11.2/lib/capistrano/configuration/execution.rb:139:in `invoke_task_directly'
        from /home/jeremykendall/.rvm/gems/ruby-1.9.3-p125@interperf/gems/capistrano-2.11.2/lib/capistrano/configuration/callbacks.rb:25:in `invoke_task_directly_with_callbacks'
        from /home/jeremykendall/.rvm/gems/ruby-1.9.3-p125@interperf/gems/capistrano-2.11.2/lib/capistrano/configuration/execution.rb:89:in `execute_task'
        from /home/jeremykendall/.rvm/gems/ruby-1.9.3-p125@interperf/gems/capistrano-2.11.2/lib/capistrano/configuration/namespaces.rb:191:in `method_missing'
        from /home/jeremykendall/.rvm/gems/ruby-1.9.3-p125@interperf/gems/capistrano-2.11.2/lib/capistrano/configuration/namespaces.rb:191:in `method_missing'
        from /home/jeremykendall/.rvm/gems/ruby-1.9.3-p125@interperf/gems/capistrano-2.11.2/lib/capistrano/configuration/namespaces.rb:110:in `block in define_task'
        from /home/jeremykendall/.rvm/gems/ruby-1.9.3-p125@interperf/gems/capifony-2.1.5/lib/symfony2.rb:159:in `block (3 levels) in load'
        from /home/jeremykendall/.rvm/gems/ruby-1.9.3-p125@interperf/gems/capistrano-2.11.2/lib/capistrano/configuration/execution.rb:139:in `instance_eval'
        from /home/jeremykendall/.rvm/gems/ruby-1.9.3-p125@interperf/gems/capistrano-2.11.2/lib/capistrano/configuration/execution.rb:139:in `invoke_task_directly'
        from /home/jeremykendall/.rvm/gems/ruby-1.9.3-p125@interperf/gems/capistrano-2.11.2/lib/capistrano/configuration/callbacks.rb:25:in `invoke_task_directly_with_callbacks'
        from /home/jeremykendall/.rvm/gems/ruby-1.9.3-p125@interperf/gems/capistrano-2.11.2/lib/capistrano/configuration/execution.rb:89:in `execute_task'
        from /home/jeremykendall/.rvm/gems/ruby-1.9.3-p125@interperf/gems/capistrano-2.11.2/lib/capistrano/configuration/execution.rb:101:in `find_and_execute_task'
        from /home/jeremykendall/.rvm/gems/ruby-1.9.3-p125@interperf/gems/capistrano-2.11.2/lib/capistrano/cli/execute.rb:46:in `block in execute_requested_actions'
        from /home/jeremykendall/.rvm/gems/ruby-1.9.3-p125@interperf/gems/capistrano-2.11.2/lib/capistrano/cli/execute.rb:45:in `each'
        from /home/jeremykendall/.rvm/gems/ruby-1.9.3-p125@interperf/gems/capistrano-2.11.2/lib/capistrano/cli/execute.rb:45:in `execute_requested_actions'
        from /home/jeremykendall/.rvm/gems/ruby-1.9.3-p125@interperf/gems/capistrano-2.11.2/lib/capistrano/cli/help.rb:19:in `execute_requested_actions_with_help'
        from /home/jeremykendall/.rvm/gems/ruby-1.9.3-p125@interperf/gems/capistrano-2.11.2/lib/capistrano/cli/execute.rb:34:in `execute!'
        from /home/jeremykendall/.rvm/gems/ruby-1.9.3-p125@interperf/gems/capistrano-2.11.2/lib/capistrano/cli/execute.rb:14:in `execute'
        from /home/jeremykendall/.rvm/gems/ruby-1.9.3-p125@interperf/gems/capistrano-2.11.2/bin/cap:4:in `<top (required)>'
        from /home/jeremykendall/.rvm/gems/ruby-1.9.3-p125@interperf/bin/cap:19:in `load'
        from /home/jeremykendall/.rvm/gems/ruby-1.9.3-p125@interperf/bin/cap:19:in `<main>'

我的deploy.rb：

set :stage_dir,'app/config/deploy'
require 'capistrano/ext/multistage'
set :stages,%w{production testing develop}

default_run_options[:pty] = true

set :application,"appname"
set :deploy_to,"/home/isr/sites/app"
set :deploy_via,:remote_cache

set :scm,:git
set :repository,"git@github.com:jeremykendall/redacted.git"
set :user,"isr"
set :use_sudo,false

ssh_options[:forward_agent] = true

set :model_manager,"doctrine"
set :keep_releases,3
set :update_vendors,true
set :shared_files,["app/config/parameters.yml","app/config/parameters.ini"]
set :shared_children,[app_path + "/logs",app_path + "/cache",web_path + "/uploads","vendor"]

我的app / config / deploy / develop.rb

# Deploys to local vagrant box

set  :domain,"192.168.33.10"
set  :symfony_env_prod,"dev"
set  :deploy_to,"/home/vagrant/sites/app"
set  :branch,"develop"
set  :user,"vagrant"

role :web,domain                   # Your HTTP server,Apache/etc
role :app,domain                   # This may be the same as your `Web` server
role :db,domain,:primary => true # This is where Rails migrations will run

我试过的

> gem install fileutils
> sudo aptitude install libfileutils-ocaml-dev(抓住FileUtils吸管)
> gem update –system
>宝石更新