We currently use version 1.2.0 of github.com/satori/go.uuid. The master branch of that repo contains backwards-incompatible API changes and a major regression that results in UUIDs being partially filled with zeros (satori/go.uuid#73). The maintainer has been unresponsive (PR satori/go.uuid#75 to fix the bug has been open with no response for nearly two months now). It may be time to find a new UUID library.