https://git.ruby-lang.org/ruby.git/commit/?id=c3a6260302

From c3a626030235c0349e14c6bc07177810daee841c Mon Sep 17 00:00:00 2001
From: Masatoshi SEKI <m_seki@m...>
Date: Mon, 14 Oct 2019 22:56:37 +0900
Subject: add require "monitor"


diff --git a/lib/drb/drb.rb b/lib/drb/drb.rb
index c90ff8e..15eba3f 100644
--- a/lib/drb/drb.rb
+++ b/lib/drb/drb.rb
@@ -48,6 +48,7 @@ https://github.com/ruby/ruby/blob/trunk/lib/drb/drb.rb#L48
 
 require 'socket'
 require 'io/wait'
+require 'monitor'
 require_relative 'eq'
 
 #
-- 
cgit v0.10.2


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