=> Bootstrap dependency digest>=20010302: found digest-20121220
===> Skipping vulnerability checks.
WARNING: No /var/db/pkg/pkg-vulnerabilities file found.
WARNING: To fix run: `/usr/sbin/pkg_admin -K /var/db/pkg fetch-pkg-vulnerabilities'.
===> Installing for ruby193-rbtree-0.4.0
=> Installing gem into installation root
Building native extensions.  This could take a while...
Successfully installed rbtree-0.4.0
1 gem installed
Installing ri documentation for rbtree-0.4.0...
Installing RDoc documentation for rbtree-0.4.0...
=> Cleaning intermediate gem build files
rm rbtree-0.4.0/./rbtree.o
rm rbtree-0.4.0/./mkmf.log
rm rbtree-0.4.0/./dict.o
rm rbtree-0.4.0/./Makefile
=> gem install
=> Automatic manual page handling