=> 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'.
=> Fetching pl-6.6.6.tar.gz
=> Total size: 14838653 bytes

ftp: transfer aborted because stalled for 11 sec.
checksum: Checksum SHA1 mismatch for swi-prolog/pl-6.6.6.tar.gz
fetch: Checksum of the file swi-prolog/pl-6.6.6.tar.gz doesn't match.
=> Checksum SHA1 OK for swi-prolog/pl-6.6.6.tar.gz
=> Checksum RMD160 OK for swi-prolog/pl-6.6.6.tar.gz
=> Checksum SHA512 OK for swi-prolog/pl-6.6.6.tar.gz
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed

  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
 92 14.1M    0     0   92 13.1M      0  16.1M --:--:-- --:--:-- --:--:-- 16.2M
100 14.1M    0     0  100 14.1M      0  16.6M --:--:-- --:--:-- --:--:-- 16.6M
=> Checksum SHA1 OK for swi-prolog/pl-6.6.6.tar.gz
=> Checksum RMD160 OK for swi-prolog/pl-6.6.6.tar.gz
=> Checksum SHA512 OK for swi-prolog/pl-6.6.6.tar.gz