What is stability?The stability of a build can be stated as:Unless something changed, do nothing.
Or as Ant best practices item "14. Perform the Clean Build Test" puts it:
Assuming your buildfile has clean and compile targets, perform the following test. First, type ant clean. Second, type ant compile. Third, type ant compile again. The third step should do absolutely nothing. If files compile a second time, something is wrong with your buildfile.