https://git.ruby-lang.org/ruby.git/commit/?id=f14aaa2b12

From f14aaa2b1282d6dea9fad3d050e65828f1e269e1 Mon Sep 17 00:00:00 2001
From: Hiroshi SHIBATA <hsbt@r...>
Date: Tue, 22 Dec 2020 16:09:52 +0900
Subject: Guard < Ruby 3.0 for the repositories of default gems.


diff --git a/tool/lib/envutil.rb b/tool/lib/envutil.rb
index 323d710..63e23ba 100644
--- a/tool/lib/envutil.rb
+++ b/tool/lib/envutil.rb
@@ -53,7 +53,7 @@ module EnvUtil https://github.com/ruby/ruby/blob/trunk/tool/lib/envutil.rb#L53
       @original_internal_encoding = Encoding.default_internal
       @original_external_encoding = Encoding.default_external
       @original_verbose = $VERBOSE
-      @original_warning = %i[deprecated experimental].to_h {|i| [i, Warning[i]]}
+      @original_warning = %i[deprecated experimental].to_h {|i| [i, Warning[i]]} if RUBY_VERSION > "2.7"
     end
   end
 
-- 
cgit v0.10.2


--
ML: ruby-changes@q...
Info: http://www.atdot.net/~ko1/quickml/