To deal with such breakages, each team has a “Build Cop.” The Build Cop’s responsibility is keeping all the tests passing in their particular project, regardless of who breaks them. When a Build Cop is notified of a failing test in their project, they drop whatever they are doing and fix the build. This is usually by identifying the offending change and determining whether it needs to be rolled back (the preferred solution) or can be fixed going forward (a riskier proposition).
