config_files.rb: show failure
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45494 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
config_files.rb: show failure
[ruby-core:61792] [Bug #9690]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45494 b2dd03c8-39d4-4d8f-98ff-823fe69b080e