For quite a while now Release Engineering has been publishing information about Firefox compile and test jobs in JSON form, for example
- a builds-4hr.js.gz file which has all the jobs from the last 4 hours
- similar files for each day, Feb 23rd is at builds-2012-02-23.js.gz
- lists of running and pending builds, which are used by tbpl.mozilla.org
The system that has been generating that data has been outgrown by the tasks given to it, so Chris AtLee has been working on moving it from http://build.mozilla.org/builds/ to http://builddata.pub.build.mozilla.org/buildjson/.
If you use this data please update your code to use the new location, as the old one won’t be updated any more.