/usr/share/maven-repo/com/miglayout/miglayout-swing/4.2/miglayout-swing-4.2.jar is in libmiglayout-java 4.2-3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/maven-repo/com/miglayout/miglayout-swing/4.2/../../../../../java/miglayout-swing.jar