title: Can a Jenkins build be failed for coverage going down?
body: <p>I've seen a number of posts on making a Maven-backed Jenkins build fail for a given project if a coverage threshold isn't met i.e. coverage must be at least 80% or the build fails.</p>
  
  <p>I'm wondering if there is a way to configure Jenkins to fail a build if the coverage is lower than the last build i.e. if the coverage for build N is 20%, and N+1 is 19%, then the build fails. I don't want to put in an explicit threshold, but I want the coverage to stay steady or get higher over time.</p>