This file is indexed.

/usr/lib/x86_64-linux-gnu/libdebian-installer.so is in libdebian-installer4-dev 0.99+deb8u1.

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

It is a symlink to /usr/lib/x86_64-linux-gnu/libdebian-installer.so.4.0.7