```
[] ~/projects/jruby-launcher $ rvm jruby-9.1.17.0 do jruby -S irb
WARNING: Unknown module: org.jruby.dist specified to --add-opens
WARNING: Unknown module: org.jruby.dist specified to --add-opens
WARNING: Unknown module: org.jruby.dist specified to --add-opens
Ignoring executable-hooks-1.6.0 because its extensions are not built.  Try: gem pristine executable-hooks --version 1.6.0
Ignoring gem-wrappers-1.4.0 because its extensions are not built.  Try: gem pristine gem-wrappers --version 1.4.0
Ignoring jruby-launcher-1.1.10-java because its extensions are not built.  Try: gem pristine jruby-launcher --version 1.1.10
jruby-9.1.17.0 :001 > exit
```