https://git.ruby-lang.org/ruby.git/commit/?id=c20dd2f754

From c20dd2f75491fc6e78dab55b492c507ee3bb670d Mon Sep 17 00:00:00 2001
From: Kazuhiro NISHIYAMA <zn@m...>
Date: Thu, 12 Dec 2019 17:38:27 +0900
Subject: Add more debug info when Errno::EINVAL

https://rubyci.org/logs/rubyci.s3.amazonaws.com/unstable11x/ruby-master/log/20191212T072406Z.fail.html.gz

diff --git a/test/net/imap/test_imap.rb b/test/net/imap/test_imap.rb
index b97be4f..28590c3 100644
--- a/test/net/imap/test_imap.rb
+++ b/test/net/imap/test_imap.rb
@@ -483,6 +483,8 @@ class IMAPTest < Test::Unit::TestCase https://github.com/ruby/ruby/blob/trunk/test/net/imap/test_imap.rb#L483
     assert_raise(Net::IMAP::Error) do
       Net::IMAP.new(server_addr, :port => port)
     end
+  rescue Errno::EINVAL => e # for debug on OpenCSW
+    raise({e: e, server: server, port: port, server_addr: server_addr}.inspect)
   end
 
   def test_default_port
-- 
cgit v0.10.2


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