Effectiveness is about reducing the time from defect injection to defect detection

Safety is not having false confidence about the security that CruiseControl is providing

Factors that will affect this:

• reliability (i.e., CruiseControl hanging)

Features that affect this:

• visibility of test coverage including trend - Do I know how effective my project's test suite is in detecting faults?
• visibility of build performance including trend - Do I know when my build is taking too long or trending that way?
• visibility of bad tests - Do I know which tests are failing incorrectly, repeatedly?