ruby-on-rails – 未定义的方法`run’for main：Object

我在部署时得到以下输出：

cap aborted!
NoMethodError: undefined method `run' for main:Object
config/deploy.rb:37:in `block (2 levels) in <top (required)>'
/var/lib/gems/1.9.1/gems/capistrano-3.2.1/lib/capistrano/dsl/task_enhancements.rb:12:in `block in after'
/var/lib/gems/1.9.1/gems/capistrano-3.2.1/lib/capistrano/application.rb:15:in `run'
/var/lib/gems/1.9.1/gems/capistrano-3.2.1/bin/cap:3:in `<top (required)>'
Tasks: TOP => deploy:permissions
(See full trace by running task with --tracE)
The deploy has failed with an error: #<NoMethodError: undefined method `run' for main:Object>

@H_607_4@我正在使用Capistrano版本：3.2.1(Rake版本：10.3.2).
部署工作正常,但我创建了一个后部署任务来修改部署版本的所有者,这样看起来如此：

namespace :deploy do
    task :permissions do
      run "chown -R :#{fetch(:group)} #{deploy_to} && chmod -R g+s #{deploy_to}"
    end
end

after :deploy,"deploy:permissions"

@H_607_4@vars被正确定义(我修复了之前的错误),但我得到这个缺少的方法错误的运行方法,我不知道为什么.

namespace :deploy do
  on roles :all do
    execute :chown,"-R :#{fetch(:group)} #{deploy_to} && chmod -R g+s #{deploy_to}"
  end
end