=> Bootstrap dependency digest>=20010302: found digest-20160304
===> 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'.
===> Building for couchdb-2.0.0nb6
==> couch_epi (compile)
ERROR: OTP release 20 does not match required regex R16B03|R16B03-1|17|18|19
ERROR: compile failed while processing /data/scratch/databases/couchdb/work/apache-couchdb-2.0.0/src/couch_epi: rebar_abort
Makefile:67: recipe for target 'couch' failed
gmake: *** [couch] Error 1
*** Error code 2

Stop.
make[1]: stopped in /data/pkgsrc/databases/couchdb
*** Error code 1

Stop.
make: stopped in /data/pkgsrc/databases/couchdb