=> 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 ruby21-tzinfo-data-1.2017.1
=> Removing backup files of patch before build
WARNING:  open-ended dependency on tzinfo (>= 1.0.0) is not recommended
  if tzinfo is semantically versioned, use:
    add_runtime_dependency 'tzinfo', '~> 1.0', '>= 1.0.0'
WARNING:  See http://guides.rubygems.org/specification-reference/ for help
  Successfully built RubyGem
  Name: tzinfo-data
  Version: 1.2017.1
  File: tzinfo-data-1.2017.1.gem