Bug #11971
Updated by personnel (Am I Who) almost 9 years ago
Version: ruby 2.3.0 and gem 2.5.1
Gem.path lost default path '[installdir]/lib/ruby/gems/2.3.0' when both GEM_HOME and GEM_PATH has been set
So require stdlib like 'test-unit' or 'rake' will raise 'LoadError'
But ruby 2.2.3 and gem 2.5.1 no this problem