Cannot run `rake test` with JRuby 9.2 about rb-sisimai HOT 3 CLOSED

GEM_HOME=/tmp/gem java -jar ~/.embulk/jars/jruby-complete-9.2.20.1.jar -S gem install bundler -v 2.3.27

GEM_HOME=/tmp/gem java -jar ~/.embulk/jars/jruby-complete-9.2.20.1.jar -S rake test

GEM_HOME=/tmp/gem java -jar ~/.embulk/jars/jruby-complete-9.2.20.1.jar -S rake test
2024-03-06T14:56:58.385+09:00 [main] WARN FilenoUtil : Native subprocess control requires open access to the JDK IO subsystem
Pass '--add-opens java.base/sun.nio.ch=ALL-UNNAMED --add-opens java.base/java.io=ALL-UNNAMED' to enable.
Run options: --seed 26554

# Running:

/private/tmp/rb-sisimai/lib/sisimai/lhost/exchange2007.rb:150: warning: `-' after local variable or literal is interpreted as binary operator
/private/tmp/rb-sisimai/lib/sisimai/lhost/exchange2007.rb:150: warning: even though it seems like unary operator
 ***warning: Failed to strptime Thu, 29 Apr 2013 23:45:51
F.........................................E.. ***warning: Failed to strptime Thu, 18 Sep 2008 17:54:04
 ***warning: Failed to strptime Tue, 28 Apr 2009 08:17:48
 ***warning: Failed to strptime Thu, 5 Mar 2009 06:28:13
 ***warning: Failed to strptime Wed, 17 Sep 2008 22:25:40
...

% /usr/local/jr/bin/jruby -v
jruby 9.3.2.0 (2.6.8) 2021-12-01 0b8223f905 Java HotSpot(TM) 64-Bit Server VM 11.0.5+10-LTS on 11.0.5+10-LTS +jit [darwin-x86_64]

% PATH="$PATH:/usr/local/jr/bin" /usr/local/jr/bin/rake test
Run options: --seed 50957

# Running:

.. ***warning: Failed to strptime Thu, 28 May 2020 23:07:59
F. ***warning: Failed to strptime Wed, 16 Oct 2013 14:15:35