Buildbot no longer supports Python 2.7 on the Buildbot master.
2.5.17. Custom Services
Custom services are stateful components of Buildbot that can be added to the
services key of the Buildbot config dictionary.
The following is the services that are meant to be used without advanced knowledge of Buildbot.
More complex services are described in the developer section of the Buildbot manual. They are meant to be used by advanced users of Buildbot.