`dekick test` shows weird errors even though the problem is merely the fact that tests do not pass

[akucintavalent]

The thing is that when I run dekick test and not all tests pass, I get a weird error message which is a bit confusing since it is not obvious that the problem is merely the fact that some tests fail.

I'd like to see some understandable error message which says, some tests failed or something like that.