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我目前正在托管我的应用程序，并且在执行 cap:deploy 时不断收到此错误。帽部署：检查是好的。

我不确定这意味着什么，并且尝试了从 stackoverflow 问题到谷歌的所有建议，但没有任何效果。

     * executing "cat /var/www/lpacarnaval/current/REVISION"
    servers: ["x.xx.xx.xxx"]
    [x.xx.xx.xxx] executing command
    command finished in 1152ms
*** [deploy:update_code] rolling back
  * executing "rm -rf /var/www/lpacarnaval/releases/20131009165153; true"
    servers: ["x.xx.xx.xxx"]
    [x.xx.xx.xxx] executing command
    command finished in 1218ms
failed: "rvm_path=$HOME/.rvm $HOME/.rvm/bin/rvm-shell 'default' -c 'cat /var/www/lpacarnaval/current/REVISION'" on x.xx.xx.xxx

这是我的 deploy.rb

    load 'deploy/assets'
require "rvm/capistrano"
require "bundler/capistrano"

set :application, "lpacarnaval"
set :user, "administrador"  # The server's user for deploys
set :deploy_to, "/var/www/lpacarnaval"
set :rails_env, "production"
set :keep_releases, 5
set :deploy_via, :remote_cache
set :use_sudo, false
set :rake, 'bundle exec rake'
set :scm, "git"
set :repository, "git@bitbucket.org:xxxxxxxx/xxxxxxx.git"  # Your clone URL

set :branch, "master"
default_run_options[:pty] = true  # Must be set for the password prompt from git to work

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


task :bundle_install, :roles => :app do
  run "cd #{release_path} && bundle install --without development test"
end

before "deploy:assets:precompile", :bundle_install

namespace :deploy do
  task :start do ; end
  task :stop do ; end
  task :restart, :roles => :app, :except => { :no_release => true } do
    run "cd #{current_release} && bundle install --without development test"
    run "touch #{File.join(current_path,'tmp','restart.txt')}"
  end
  task :update_crontab, :roles => :db do
    run "cd #{release_path} && whenever --update-crontab #{application}"
  end

  namespace :assets do
    task :precompile, :roles => :web, :except => { :no_release => true } do
      from = source.next_revision(current_revision)
      if capture("cd #{latest_release} && #{source.local.log(from)} vendor/assets/ app/assets/ | wc -l").to_i > 0
        run %Q{cd #{latest_release} && #{rake} RAILS_ENV=#{rails_env} #{asset_env} assets:precompile}
      else
        logger.info "Skipping asset pre-compilation because there were no asset changes"
      end
    end
  end
after "deploy", "deploy:cleanup"
after "deploy:symlink", "deploy:update_crontab"
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