RVM installation went poorly on FreeBSD.

The ca-certificates weren’t up to date according to the install script.

Really, the ca-certificates weren’t in the right location for RVM’s curl install script.

These commands as root fixed it:

mkdir -p /usr/local/opt/curl-ca-bundle
ln -s /usr/local/share/certs/ca-root-nss.crt /usr/local/opt/curl-ca-bundle/share/ca-bundle.crt