In life of every committer comes a time that separates boys from men (apology to my female co-committers - I am only using this for the dramatic effect). A committer comes of age when he/she breaks the build for the first time. Another milestone that only the chosen ones reach is to cause an M5a build.
How can one reach such a lofty goal? It takes years of experience, ever increasing responsibilities that compete with the proper testing time and most importantly, a blissful disregard for the Eclipse API prime directive: Every API matters to some client.
In M5, we have reworked the UI Forms. A color that was used in the past is no longer needed. I deprecated the color key but made a mistake of not leaving the color by that key around for those who want to use it. You can read all the embarrassing details in the bug 174441. Who knew people find the color Forms use to paint the section title gradient useful for other interesting purposes.
What can I do to top this? I have never caused a rebuild of a GA build. But something tells me my commit rights will be wrestled away from me before I manage to achieve it.