ruby-on-rails-4 – Rails 4,capistrano 3,delayed_job – 在其

file – config / deploy / staging.rb

set :rails_env,'staging'  
set :eager_load,:true  
set :unicorn_rack_env,'staging'  
role :app,%w{deploy@x.x.x.x}  
role :web,%w{deploy@x.x.x.x}  
role :db,%w{deploy@x.x.x.x}  

set :rvm_type,:auto                    # Defaults to: :auto  
set :rvm_ruby_version,'2.1.2'  

set :rails_env,:true    
role :app,%w{deploy@x.x.x.}  
role :web,%w{deploy@x.x.x.}  
role :db,%w{deploy@x.x.x.}  
set :rvm_type,'2.1.2'  
set :deploy_to,'/var/www/app'  
server 'x.x.x',user: 'deploy',roles: %w{web app},port: 222  
set :unicorn_pid,->{ "#{deploy_to}/shared/tmp/pids/unicorn.pid" }  
set :scm,:git  
set :ssh_options,{ user: 'superman' }  
set :keep_releases,5

重启延迟工作 –

namespace :delayed_job do  
  def args  
    fetch(:delayed_job_args,"")   
  end

  def delayed_job_roles  
    fetch(:delayed_job_server_role,:app)   
  end   

  desc 'Stop the delayed_job process'  
  task :stop do  
    on roles(delayed_job_roles) do  
      within release_path do  
        with rails_env: fetch(:rails_env) do  
          execute :bundle,:exec,:'bin/delayed_job',:stop  
        end  
      end  
    end   
  end  

  desc 'Start the delayed_job process'
  task :start do  
    on roles(delayed_job_roles) do  
      within release_path do  
        with rails_env: fetch(:rails_env) do  
          execute :bundle,args,:start  
        end  
      end  
    end   
  end  

  desc 'Restart the delayed_job process'  
  task :restart do  
    on roles(delayed_job_roles) do  
      within release_path do  
        with rails_env: fetch(:rails_env) do  
          execute :bundle,:restart  
        end  
      end  
    end   
  end  
end

你能帮我解决一下这个问题吗？提前致谢！

更新1
有关此错误的更多信息：
lib / capistrano / tasks / delayed_job.rake：33执行：bundle,：exec,：’bin / delayed_job’,：restart