jaredgrubb/buildbot — comment on commit a2cad9d58f486a217e9ef36d782e4bd4456b702d
File: master/buildbot/steps/trigger.py line 180
By jaredgrubb:

I'm not real happy about having to do this, but it makes using this statistic easier later. For example, if a Mail Status, it can use the buildername+number to generate URL's back to each triggered step.