/usr/lib/x86_64-linux-gnu/libosmcomp.so.3 is in libosmcomp3 3.3.20-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libosmcomp.so.3.0.10
/usr/lib/x86_64-linux-gnu/libosmcomp.so.3.0.10