This file is indexed.

/lib/x86_64-linux-gnu/libusb-0.1.so.4 is in libusb-0.1-4 2:0.1.12-20.

This file is owned by root:root, with mode 0o777.

It is a symlink to /lib/x86_64-linux-gnu/libusb-0.1.so.4.4.4