Go test fails with [build failed] but don't gives a hint what's wrong

I'm running tests and some of them fail with [build failed]. There is no message though, so I don't know what's wrong. Is there a way to configure tests to show build error messages?

$ go test -v ./...
?       badrobot/automation [no test files]
?       badrobot/automation/config  [no test files]
FAIL    badrobot/automation/handlers [build failed]
FAIL    badrobot/automation/middleware [build failed]
?       badrobot/automation/models  [no test files]