title: Why are my builds failing with "Process 'Gradle Test Executor 1' finished with non-zero exit value 100"
body: <p>I'm trying to build one of our older projects that uses Gradle 4.9.  I'm getting build failures with the message <code>Process 'Gradle Test Executor 1' finished with non-zero exit value 100</code>, but I can't find any information on what that code actually <em>means</em>.  Is there a reference somewhere with these error codes?  I've been unable to find one, but maybe I'm just not looking in the right place.</p>