проблема связки passenger+redmine+apache

incompatible library version - /usr/local/rvm/gems/ruby-2.1.0/gems/mysql2-0.3.21/lib/mysql2/mysql2.so (LoadError)
  /usr/local/rvm/gems/ruby-2.1.0/gems/activesupport-3.2.17/lib/active_support/dependencies.rb:251:in `require'
  /usr/local/rvm/gems/ruby-2.1.0/gems/activesupport-3.2.17/lib/active_support/dependencies.rb:251:in `block in require'
  /usr/local/rvm/gems/ruby-2.1.0/gems/activesupport-3.2.17/lib/active_support/dependencies.rb:236:in `load_dependency'
  /usr/local/rvm/gems/ruby-2.1.0/gems/activesupport-3.2.17/lib/active_support/dependencies.rb:251:in `require'
  /usr/local/rvm/gems/ruby-2.1.0/gems/mysql2-0.3.21/lib/mysql2.rb:31:in `<top (required)>'
  /usr/local/rvm/gems/ruby-2.1.0@global/gems/bundler-1.5.0/lib/bundler/runtime.rb:76:in `require'
  /usr/local/rvm/gems/ruby-2.1.0@global/gems/bundler-1.5.0/lib/bundler/runtime.rb:76:in `block (2 levels) in require'
  /usr/local/rvm/gems/ruby-2.1.0@global/gems/bundler-1.5.0/lib/bundler/runtime.rb:72:in `each'
  /usr/local/rvm/gems/ruby-2.1.0@global/gems/bundler-1.5.0/lib/bundler/runtime.rb:72:in `block in require'
  /usr/local/rvm/gems/ruby-2.1.0@global/gems/bundler-1.5.0/lib/bundler/runtime.rb:61:in `each'
  /usr/local/rvm/gems/ruby-2.1.0@global/gems/bundler-1.5.0/lib/bundler/runtime.rb:61:in `require'
  /usr/local/rvm/gems/ruby-2.1.0@global/gems/bundler-1.5.0/lib/bundler.rb:131:in `require'
  /home/ubuntu/redmine-2.5.1/config/application.rb:7:in `<top (required)>'
  /home/ubuntu/redmine-2.5.1/config/environment.rb:2:in `require'
  /home/ubuntu/redmine-2.5.1/config/environment.rb:2:in `<top (required)>'
  config.ru:3:in `require'
  config.ru:3:in `block in <main>'
  /usr/local/rvm/gems/ruby-2.1.0/gems/rack-1.4.7/lib/rack/builder.rb:51:in `instance_eval'
  /usr/local/rvm/gems/ruby-2.1.0/gems/rack-1.4.7/lib/rack/builder.rb:51:in `initialize'
  config.ru:1:in `new'
  config.ru:1:in `<main>'
  /var/lib/gems/2.2.0/gems/passenger-5.1.6/src/helper-scripts/rack-preloader.rb:110:in `eval'
  /var/lib/gems/2.2.0/gems/passenger-5.1.6/src/helper-scripts/rack-preloader.rb:110:in `preload_app'
  /var/lib/gems/2.2.0/gems/passenger-5.1.6/src/helper-scripts/rack-preloader.rb:156:in `<module:App>'
  /var/lib/gems/2.2.0/gems/passenger-5.1.6/src/helper-scripts/rack-preloader.rb:30:in `<module:PhusionPassenger>'
  /var/lib/gems/2.2.0/gems/passenger-5.1.6/src/helper-scripts/rack-preloader.rb:29:in `<main>'

mysql  Ver 14.14 Distrib 5.5.37, for debian-linux-gnu (i686) using readline 6.2

Fetching: mysql2-0.4.8.gem (100%)
Building native extensions with: '--with-mysql-config=/usr/bin/mysql_config'
This could take a while...
Successfully installed mysql2-0.4.8
Parsing documentation for mysql2-0.4.8
Installing ri documentation for mysql2-0.4.8
Done installing documentation for mysql2 after 1 seconds
1 gem installed

Using mysql (2.8.1)
Using mysql2 (0.4.8)

Message from application: incompatible library version - /usr/local/rvm/gems/ruby-2.1.0/gems/mysql2-0.4.8/lib/mysql2/mysql2.so (LoadError)