fix: https://twitter.com/_ko1/status/1086167481922646016

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@66985 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

test/rinda/test_rinda.rb

@@ -8,6 +8,9 @@ require 'rinda/tuplespace'
 require 'timeout'
 require 'singleton'
 
+DRb.start_service
+
+
 module Rinda
 
 class MockClock
@@ -795,6 +798,7 @@ class TestRingServer < Test::Unit::TestCase
       mth.raise(Timeout::Error)
     end
     tl0 << th
+    yield
   rescue Timeout::Error => e
     if tl
       bt = e.backtrace