Try to fix Travis CI configuration.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61605 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Try to fix Travis CI configuration.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61605 b2dd03c8-39d4-4d8f-98ff-823fe69b080e