/usr/share/maven-repo/org/codehaus/plexus/plexus-compiler-test/1.9.2/plexus-compiler-test-1.9.2.jar is in libplexus-compiler-java 1.9.2-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/maven-repo/org/codehaus/plexus/plexus-compiler-test/1.9.2/../../../../../../java/plexus-compiler-test.jar