/usr/lib/x86_64-linux-gnu/libgdruntime.so.68 is in libgphobos68 6.4.0-17ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libgdruntime.so.68.0.2
/usr/lib/x86_64-linux-gnu/libgdruntime.so.68.0.2