/usr/share/maven-repo/org/eclipse/jetty/jetty-server/debian/jetty-server-debian.jar is in libjetty8-java 8.1.3-9.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/maven-repo/org/eclipse/jetty/jetty-server/debian/../../../../../../java/jetty8-server-8.1.3.v20120416.jar