/usr/lib/x86_64-linux-gnu/libhfst.so.42 is in libhfst42 3.9.0~r4595-3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libhfst.so.42.0.0
/usr/lib/x86_64-linux-gnu/libhfst.so.42.0.0