/usr/share/maven-repo/org/springframework/spring-instrument/debian/spring-instrument-debian.jar is in libspring-instrument-java 4.3.5-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/maven-repo/org/springframework/spring-instrument/debian/../../../../../java/spring3-instrument-3.x.jar