"incomplete type 'BIO_METHOD'"
Likely fixed in a later release, they've switchted to a different upstream for go openssl.
During BSDCan 2018 the intention to update OpenSSL in base to 1.1.x branch was documented.
Intention is to update OpenSSL in 12-STABLE to 1.1.1 when that is released.
Poudriere log: https://keg.brnrd.eu/data/111amd64-default-openssl110/2018-08-17_12h10m13s/logs/errors/mongodb32-tools-3.2.11.log
Built fine on 12-current with openssl-devel 1.1.0i
(In reply to Nathan from comment #1)
Cannot confirm. It still does not build with SSL_DEFAULT=openssl111.
Also fails on 13.0-CURRENT:
Port is marked deprecated anyway, so there is really nothing to do here anymore.
Expired port removed.