The file sites/all/modules/cumulus/cumulus.js is missing. Please download it from http://pratul.in/files/cumulus.js, and add it to the Cumulus module folder!
A couple of days ago we setup an automatic build and testing system for our development of [1]. We used [2] as the base of the system.
CruiseControl does check if there were any changes to the source code and launches a build.