Environment Information

Provide at least:

• JRuby version - 9.2.18.0
• Operating system and platform - Linux Boris-Desktop 5.12.10-arch1-1 #1 SMP PREEMPT Thu, 10 Jun 2021 16:34:50 +0000 x86_64 GNU/Linux

I run JRuby via the JRuby Gradle Plugin. It was fine while I was using JDK 15. Updating to JDK 16 leads to this warning:

2021-06-14T12:05:15.307+03:00 [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.

Otherwise it works fine.

There seem to be some related issues but they concern Windows and not an update to the JDK so I decided to open a new one.

Any ideas?

Expected Behavior

No warning to be shown.

Actual Behavior

Warning shown.