% time make PKG_VERSION=16.snap1 WSTAGEDIR=/build/obj/bsd/src/bsd/dev/amd64.amd64/worldstage clean all
rm -f *.ucl *.ucl.in *.plist *.pkg
Generating FreeBSD-rescue.ucl.in from /src/bsd/dev/packages/rescue/rescue.ucl
/src/bsd/dev/release/packages/generate-ucl.lua  VERSION "16.snap1"  PKG_NAME_PREFIX "FreeBSD"  PKG_WWW "https://www.FreeBSD.org"  PKG_MAINTAINER "re@FreeBSD.org"  CAP_MKDB_ENDIAN "-l"    PKGNAME "rescue"  PKGGENNAME "rescue"  UCLSRC "FreeBSD-rescue.ucl.in"  /src/bsd/dev/packages/template.ucl FreeBSD-rescue.ucl
pkg -o ABI=FreeBSD:16:amd64  -o OSVERSION=1600012  -o ALLOW_BASE_SHLIBS=yes create -f tar    -T 0  -r /build/obj/bsd/src/bsd/dev/amd64.amd64/worldstage  -o /build/obj/bsd/src/bsd/dev/amd64.amd64/packages/rescue -M FreeBSD-rescue.ucl -p /build/obj/bsd/src/bsd/dev/amd64.amd64/worldstage/rescue.plist
make PKG_VERSION=16.snap1  clean all  23.05s user 1.95s system 100% cpu 24.999 total

% ls -lh /build/obj/bsd/src/bsd/dev/amd64.amd64/packages/rescue/*.pkg
-rw-r--r--  1 lexi users   19M Mar 12 04:47 /build/obj/bsd/src/bsd/dev/amd64.amd64/packages/rescue/FreeBSD-rescue-16.snap1.pkg