/usr/lib/R/bin/Rserve is in r-cran-rserve 1.7-3-3build2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/R/bin/../site-library/Rserve/libs/Rserve
/usr/lib/R/bin/../site-library/Rserve/libs/Rserve