Remove virtualbox kmod again - it's blowing up here:

install -m 755 -s lib/bcc-cpp   /usr/workdir/usr/ports/devel/dev86/work/stage/us
r/local/lib/bcc/bcc-cpp^M
install: lib/bcc-cpp: No such file or directory^M
*** [install-bcc] Error code 71^M
^M
Stop in /usr/workdir/usr/ports/devel/dev86/work/dev86-0.16.20.^M
*** [install] Error code 1^M

And there are forum posts about this (some folks are starting to try and build
freenas and are hitting both this and the MegaCLI port breakage).
Merge branch 'master' of gitserver.ixsystems.com:/git/repos/freenas-build/freenas