use :chdir option to avoid fd 3 to work with Windows.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@66380 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
use :chdir option to avoid fd 3 to work with Windows.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@66380 b2dd03c8-39d4-4d8f-98ff-823fe69b080e