modify r58771.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58776 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
modify r58771.
(VirtualBox shared directory) and change tests to match /success$/ to
ignore warnings. This technique is suggested by @unak.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58776 b2dd03c8-39d4-4d8f-98ff-823fe69b080e