Capistrano error: undefined method `already_invoked' for <Rake::Task load:defaults => []>:Rake::Task
Capistrano error: undefined method `already_invoked' for <Rake::Task load:defaults => []>:Rake::Task
我花了太多时间调试它，但我不知道发生了什么。 "cap production deploy" 今天早上工作正常，现在它只是抛出一个错误。令人惊讶的是，Google 到目前为止并没有太大帮助。据我所知，代码库没有任何变化：
➜ sesac-mm-matching git:(deploy) cap production deploy --trace
** Invoke production (first_time)
** Execute production
cap aborted!
NoMethodError: undefined method `already_invoked' for <Rake::Task load:defaults => []>:Rake::Task
/Users/***/.rvm/gems/ruby-2.3.0@global/gems/capistrano-3.6.0/lib/capistrano/dsl.rb:16:in `invoke'
/Users/***/.rvm/gems/ruby-2.3.0@global/gems/capistrano-3.6.0/lib/capistrano/setup.rb:24:in `block (2 levels) in <top (required)>'
/Users/***/.rvm/gems/ruby-2.3.0/gems/rake-10.5.0/lib/rake/task.rb:240:in `block in execute'
/Users/***/.rvm/gems/ruby-2.3.0/gems/rake-10.5.0/lib/rake/task.rb:235:in `each'
/Users/***/.rvm/gems/ruby-2.3.0/gems/rake-10.5.0/lib/rake/task.rb:235:in `execute'
/Users/***/.rvm/gems/ruby-2.3.0/gems/rake-10.5.0/lib/rake/task.rb:179:in `block in invoke_with_call_chain'
/Users/***/.rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/monitor.rb:214:in `mon_synchronize'
/Users/***/.rvm/gems/ruby-2.3.0/gems/rake-10.5.0/lib/rake/task.rb:172:in `invoke_with_call_chain'
/Users/***/.rvm/gems/ruby-2.3.0/gems/rake-10.5.0/lib/rake/task.rb:165:in `invoke'
/Users/***/.rvm/gems/ruby-2.3.0/gems/rake-10.5.0/lib/rake/application.rb:150:in `invoke_task'
/Users/***/.rvm/gems/ruby-2.3.0/gems/rake-10.5.0/lib/rake/application.rb:106:in `block (2 levels) in top_level'
/Users/***/.rvm/gems/ruby-2.3.0/gems/rake-10.5.0/lib/rake/application.rb:106:in `each'
/Users/***/.rvm/gems/ruby-2.3.0/gems/rake-10.5.0/lib/rake/application.rb:106:in `block in top_level'
/Users/***/.rvm/gems/ruby-2.3.0/gems/rake-10.5.0/lib/rake/application.rb:115:in `run_with_threads'
/Users/***/.rvm/gems/ruby-2.3.0/gems/rake-10.5.0/lib/rake/application.rb:100:in `top_level'
/Users/***/.rvm/gems/ruby-2.3.0/gems/rake-10.5.0/lib/rake/application.rb:78:in `block in run'
/Users/***/.rvm/gems/ruby-2.3.0/gems/rake-10.5.0/lib/rake/application.rb:176:in `standard_exception_handling'
/Users/***/.rvm/gems/ruby-2.3.0/gems/rake-10.5.0/lib/rake/application.rb:75:in `run'
/Users/***/.rvm/gems/ruby-2.3.0@global/gems/capistrano-3.6.0/lib/capistrano/application.rb:14:in `run'
/Users/***/.rvm/gems/ruby-2.3.0@global/gems/capistrano-3.6.0/bin/cap:3:in `<top (required)>'
/Users/***/.rvm/gems/ruby-2.3.0/bin/cap:23:in `load'
/Users/***/.rvm/gems/ruby-2.3.0/bin/cap:23:in `<main>'
/Users/***/.rvm/gems/ruby-2.3.0/bin/ruby_executable_hooks:15:in `eval'
/Users/***/.rvm/gems/ruby-2.3.0/bin/ruby_executable_hooks:15:in `<main>'
Tasks: TOP => production
有人能提供一些指导吗？
是的，您似乎在新发布的 Capistrano 3.6.0 中发现了一个错误。请在此处报告错误：https://github.com/capistrano/capistrano/issues
潜在的问题是 Capistrano 3.6.0（错误地）与 Rake < 11.0.0 不兼容。
同时，您可以通过使用 gem install rake 或 bundle update rake 将 Rake 升级到版本 11.0.0 或更高版本来解决此问题（取决于您是否对 Capistrano 使用 bundle exec或不）。
如果您无法升级 Rake，请将 Capistrano 降级到版本 3.5.0，直到错误被修复。
更新：Capistrano 3.6.1 已发布并恢复与 Rake < 11.0.0 的兼容性。
我花了太多时间调试它，但我不知道发生了什么。 "cap production deploy" 今天早上工作正常，现在它只是抛出一个错误。令人惊讶的是，Google 到目前为止并没有太大帮助。据我所知，代码库没有任何变化：
➜ sesac-mm-matching git:(deploy) cap production deploy --trace
** Invoke production (first_time)
** Execute production
cap aborted!
NoMethodError: undefined method `already_invoked' for <Rake::Task load:defaults => []>:Rake::Task
/Users/***/.rvm/gems/ruby-2.3.0@global/gems/capistrano-3.6.0/lib/capistrano/dsl.rb:16:in `invoke'
/Users/***/.rvm/gems/ruby-2.3.0@global/gems/capistrano-3.6.0/lib/capistrano/setup.rb:24:in `block (2 levels) in <top (required)>'
/Users/***/.rvm/gems/ruby-2.3.0/gems/rake-10.5.0/lib/rake/task.rb:240:in `block in execute'
/Users/***/.rvm/gems/ruby-2.3.0/gems/rake-10.5.0/lib/rake/task.rb:235:in `each'
/Users/***/.rvm/gems/ruby-2.3.0/gems/rake-10.5.0/lib/rake/task.rb:235:in `execute'
/Users/***/.rvm/gems/ruby-2.3.0/gems/rake-10.5.0/lib/rake/task.rb:179:in `block in invoke_with_call_chain'
/Users/***/.rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/monitor.rb:214:in `mon_synchronize'
/Users/***/.rvm/gems/ruby-2.3.0/gems/rake-10.5.0/lib/rake/task.rb:172:in `invoke_with_call_chain'
/Users/***/.rvm/gems/ruby-2.3.0/gems/rake-10.5.0/lib/rake/task.rb:165:in `invoke'
/Users/***/.rvm/gems/ruby-2.3.0/gems/rake-10.5.0/lib/rake/application.rb:150:in `invoke_task'
/Users/***/.rvm/gems/ruby-2.3.0/gems/rake-10.5.0/lib/rake/application.rb:106:in `block (2 levels) in top_level'
/Users/***/.rvm/gems/ruby-2.3.0/gems/rake-10.5.0/lib/rake/application.rb:106:in `each'
/Users/***/.rvm/gems/ruby-2.3.0/gems/rake-10.5.0/lib/rake/application.rb:106:in `block in top_level'
/Users/***/.rvm/gems/ruby-2.3.0/gems/rake-10.5.0/lib/rake/application.rb:115:in `run_with_threads'
/Users/***/.rvm/gems/ruby-2.3.0/gems/rake-10.5.0/lib/rake/application.rb:100:in `top_level'
/Users/***/.rvm/gems/ruby-2.3.0/gems/rake-10.5.0/lib/rake/application.rb:78:in `block in run'
/Users/***/.rvm/gems/ruby-2.3.0/gems/rake-10.5.0/lib/rake/application.rb:176:in `standard_exception_handling'
/Users/***/.rvm/gems/ruby-2.3.0/gems/rake-10.5.0/lib/rake/application.rb:75:in `run'
/Users/***/.rvm/gems/ruby-2.3.0@global/gems/capistrano-3.6.0/lib/capistrano/application.rb:14:in `run'
/Users/***/.rvm/gems/ruby-2.3.0@global/gems/capistrano-3.6.0/bin/cap:3:in `<top (required)>'
/Users/***/.rvm/gems/ruby-2.3.0/bin/cap:23:in `load'
/Users/***/.rvm/gems/ruby-2.3.0/bin/cap:23:in `<main>'
/Users/***/.rvm/gems/ruby-2.3.0/bin/ruby_executable_hooks:15:in `eval'
/Users/***/.rvm/gems/ruby-2.3.0/bin/ruby_executable_hooks:15:in `<main>'
Tasks: TOP => production
有人能提供一些指导吗？
是的，您似乎在新发布的 Capistrano 3.6.0 中发现了一个错误。请在此处报告错误：https://github.com/capistrano/capistrano/issues
潜在的问题是 Capistrano 3.6.0（错误地）与 Rake < 11.0.0 不兼容。
同时，您可以通过使用 gem install rake 或 bundle update rake 将 Rake 升级到版本 11.0.0 或更高版本来解决此问题（取决于您是否对 Capistrano 使用 bundle exec或不）。
如果您无法升级 Rake，请将 Capistrano 降级到版本 3.5.0，直到错误被修复。
更新：Capistrano 3.6.1 已发布并恢复与 Rake < 11.0.0 的兼容性。