lib/test/unit.rb: workers sudden-death
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@36147 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
lib/test/unit.rb: workers sudden-death
sudden-death of workers.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@36147 b2dd03c8-39d4-4d8f-98ff-823fe69b080e