/usr/share/maven-repo/org/jruby/extras/jffi/debian/jffi-debian.jar is in libjffi-java 1.0.2-11.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/maven-repo/org/jruby/extras/jffi/debian/../../../../../../java/jffi-1.0.2.jar