I was partly responsible for that work. We did it for the same reason as Heroku: Ubuntu 10.04 passed out of LTS. CF buildpacks explicitly state which binaries

I was partly responsible for that work. We did it for the same reason as Heroku: Ubuntu 10.04 passed out of LTS. CF buildpacks explicitly state which binaries should be used with which stack in the manifest.yml file. If you had a breakage, feel free to report it on the relevant github repo.