add timeout to avoid global timeout
http://ruby-mswin.cloudapp.net/vc10-x64/ruby-trunk/log/20141224T065940Z.log.html.gz
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48968 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
add timeout to avoid global timeout
http://ruby-mswin.cloudapp.net/vc10-x64/ruby-trunk/log/20141224T065940Z.log.html.gz
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48968 b2dd03c8-39d4-4d8f-98ff-823fe69b080e