неинициализированным постоянная mysql2 :: Client :: SECURE_CONNECTION

Question

Я наклоняю запустить проект Rails из-за ошибки, возникшей в mysql2

Это сообщение не помогло мне: rake aborted! uninitialized constant Mysql2

Также прекрасно работает на моем со- рабочих компьютеров, поэтому проблема с самим проектом исключена.

Вот консольный вывод:

$ rails s 
/home/duke/.rvm/gems/ruby-2.0.0-p648/gems/bundler-1.13.6/lib/bundler/runtime.rb:94:in `rescue in block (2 levels) in require': There was an error while trying to load the gem 'mysql2'. (Bundler::GemRequireError) 
Gem Load Error is: uninitialized constant Mysql2::Client::SECURE_CONNECTION 
Backtrace for gem load error is: 
/home/duke/.rvm/gems/ruby-2.0.0-p648/gems/mysql2-0.3.14/lib/mysql2/client.rb:12:in `<class:Client>' 
/home/duke/.rvm/gems/ruby-2.0.0-p648/gems/mysql2-0.3.14/lib/mysql2/client.rb:2:in `<module:Mysql2>' 
/home/duke/.rvm/gems/ruby-2.0.0-p648/gems/mysql2-0.3.14/lib/mysql2/client.rb:1:in `<top (required)>' 
/home/duke/.rvm/gems/ruby-2.0.0-p648/gems/mysql2-0.3.14/lib/mysql2.rb:10:in `require' 
/home/duke/.rvm/gems/ruby-2.0.0-p648/gems/mysql2-0.3.14/lib/mysql2.rb:10:in `<top (required)>' 
/home/duke/.rvm/gems/ruby-2.0.0-p648/gems/bundler-1.13.6/lib/bundler/runtime.rb:91:in `require' 
/home/duke/.rvm/gems/ruby-2.0.0-p648/gems/bundler-1.13.6/lib/bundler/runtime.rb:91:in `block (2 levels) in require' 
/home/duke/.rvm/gems/ruby-2.0.0-p648/gems/bundler-1.13.6/lib/bundler/runtime.rb:86:in `each' 
/home/duke/.rvm/gems/ruby-2.0.0-p648/gems/bundler-1.13.6/lib/bundler/runtime.rb:86:in `block in require' 
/home/duke/.rvm/gems/ruby-2.0.0-p648/gems/bundler-1.13.6/lib/bundler/runtime.rb:75:in `each' 
/home/duke/.rvm/gems/ruby-2.0.0-p648/gems/bundler-1.13.6/lib/bundler/runtime.rb:75:in `require' 
/home/duke/.rvm/gems/ruby-2.0.0-p648/gems/bundler-1.13.6/lib/bundler.rb:106:in `require' 
/home/duke/RubymineProjects/*******/*******/config/application.rb:7:in `<top (required)>' 
/home/duke/.rvm/gems/ruby-2.0.0-p648/gems/railties-3.2.15/lib/rails/commands.rb:53:in `require' 
/home/duke/.rvm/gems/ruby-2.0.0-p648/gems/railties-3.2.15/lib/rails/commands.rb:53:in `block in <top (required)>' 
/home/duke/.rvm/gems/ruby-2.0.0-p648/gems/railties-3.2.15/lib/rails/commands.rb:50:in `tap' 
/home/duke/.rvm/gems/ruby-2.0.0-p648/gems/railties-3.2.15/lib/rails/commands.rb:50:in `<top (required)>' 
script/rails:6:in `require' 
script/rails:6:in `<main>' 
Bundler Error Backtrace: 
     from /home/duke/.rvm/gems/ruby-2.0.0-p648/gems/bundler-1.13.6/lib/bundler/runtime.rb:90:in `block (2 levels) in require' 
     from /home/duke/.rvm/gems/ruby-2.0.0-p648/gems/bundler-1.13.6/lib/bundler/runtime.rb:86:in `each' 
     from /home/duke/.rvm/gems/ruby-2.0.0-p648/gems/bundler-1.13.6/lib/bundler/runtime.rb:86:in `block in require' 
     from /home/duke/.rvm/gems/ruby-2.0.0-p648/gems/bundler-1.13.6/lib/bundler/runtime.rb:75:in `each' 
     from /home/duke/.rvm/gems/ruby-2.0.0-p648/gems/bundler-1.13.6/lib/bundler/runtime.rb:75:in `require' 
     from /home/duke/.rvm/gems/ruby-2.0.0-p648/gems/bundler-1.13.6/lib/bundler.rb:106:in `require' 
     from /home/duke/RubymineProjects/********/********/config/application.rb:7:in `<top (required)>' 
     from /home/duke/.rvm/gems/ruby-2.0.0-p648/gems/railties-3.2.15/lib/rails/commands.rb:53:in `require' 
     from /home/duke/.rvm/gems/ruby-2.0.0-p648/gems/railties-3.2.15/lib/rails/commands.rb:53:in `block in <top (required)>' 
     from /home/duke/.rvm/gems/ruby-2.0.0-p648/gems/railties-3.2.15/lib/rails/commands.rb:50:in `tap' 
     from /home/duke/.rvm/gems/ruby-2.0.0-p648/gems/railties-3.2.15/lib/rails/commands.rb:50:in `<top (required)>' 
     from script/rails:6:in `require' 
     from script/rails:6:in `<main>' 

Я пробовал каждый совет от GitHub вопросов, но это не помогло вообще.

• Я попытался Руби 2.0.0, 2.1.8, 2.2.x
• Моя ОС Ubuntu 16,04
• MySQL 5.6.16
• ruby-mysql и libmysqlclient-dev оба установлены

Answer 1

Мне пришлось обновить mysql2 до 0.3.21