Original issue: The DependencyGrabberTest currently require ordered execution based on the name of the test. In some environments this seems to cause the tests to fail (as they may execute out of order). Generally speaking though it seems it would be best if the tests didn't have dependencies on each other in order to pass.
Actual issue: It turns out that there is a bug in Groovy Grapes. When there is a failed call to Grape.resolve(), GrapeIvy.resolve() hangs onto a reference to the IvyGrabRecord for the failed dependency. When subsequent resolve() calls are made, those failed records are still there, so it will continue to fail from that point on. This explains why the ordering was important in the TinkerPop test case.
When Groovy 2.4.6 ships with the fix for
GROOVY-7649, the @Ignore in the test case can be removed if TinkerPop bumps up to the new Groovy version.