$ bundle exec cap deploy:setup
/Users/development/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/gems/2.0.0/gems/sshkit-1.1.0/lib/sshkit.rb:3:
warning: already initialized constant SSHKit::StandardError
/Users/development/.rvm/gems/ruby-2.0.0-p247@global/gems/sshkit-1.1.0/lib/sshkit.rb:3:
warning: previous definition of StandardError was here
cap aborted!
undefined method `instance' for Capistrano::Configuration:Class
/Users/development/.rvm/gems/ruby-2.0.0-p247@global/gems/railsless-deploy-1.1.2/lib/railsless-deploy.rb:1:in `<top (required)>'
/Users/development/Sites/singapore/Capfile:1:in `require'
/Users/development/Sites/singapore/Capfile:1:in `<top (required)>'
/Users/development/.rvm/gems/ruby-2.0.0-p247@global/gems/capistrano-3.0.0/lib/capistrano/application.rb:22:in `load_rakefile'
/Users/development/.rvm/gems/ruby-2.0.0-p247@global/gems/capistrano-3.0.0/lib/capistrano/application.rb:12:in `run'
/Users/development/.rvm/gems/ruby-2.0.0-p247@global/gems/capistrano-3.0.0/bin/cap:3:in `<top (required)>'
我对 capistrano 相当陌生,但过去曾成功使用过它,没有遇到这么多问题。有谁知道解决这个问题?