/usr/share/doc/libxcrypt-dev/README.ufc-crypt.gz is in libxcrypt-dev 1:2.4-4.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libxcrypt-dev/../libxcrypt1/README.ufc-crypt.gz
/usr/share/doc/libxcrypt-dev/../libxcrypt1/README.ufc-crypt.gz