/usr/lib/x86_64-linux-gnu/librostime.so.0d is in librostime0d 0.6.7-1build1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/librostime.so.0.6.7
/usr/lib/x86_64-linux-gnu/librostime.so.0.6.7