/usr/share/maven-repo/org/reactivestreams/reactive-streams/1.0.0/reactive-streams-1.0.0.jar is in libreactive-streams-java 1.0.0-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/maven-repo/org/reactivestreams/reactive-streams/1.0.0/../../../../../java/reactive-streams-1.0.0.jar