I am running my Playspec tests but I keep getting error that 60 of the tests failed to start. What is surprising is the nesting of test cases.
Sorry, I don't have more information at the moment. What does the nested testcase list (lower left corner) in the picture mean? Are these test running in parallel?

The issue was that each test was starting its own instance of database. After a point in time, the system gets overwhelmed.