/usr/lib/x86_64-linux-gnu/libgusb.so.2 is in libgusb2 0.1.6-5.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libgusb.so.2.0.3
/usr/lib/x86_64-linux-gnu/libgusb.so.2.0.3