/usr/lib/x86_64-linux-gnu/libmrpt-scanmatching.so.1.2 is in libmrpt-scanmatching1.2 1:1.2.2-1.1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libmrpt-scanmatching.so.1.2.2
/usr/lib/x86_64-linux-gnu/libmrpt-scanmatching.so.1.2.2