A unit test added in revision 16012 is failing during our builds. The
test I'm talking about is org.hibernate.validation.engine.groups.GroupTest
.testGroupSequenceFollowedByGroup(). When I debugged, the iterator defined
in line 281 always has the constraint violation for phoneNumber before that
of defaultCreditCard. When I exchanged the locations of the asserts, the
test succeeded, but of course I don't think that this is a good solution,
since I'm sure that the tests run successfully on other machines.