1. A method at an automatic diagnosis tool for automatic diagnosis of test failures for a device under test: receiving from an automated test system test results for a plurality of tests performed on a set of revisions of the device under test, the test results indicating for each revision of said set of revisions whether each of the tests failed or passed for said revision; on a condition that at least two tests failed for a lates revision, selecting one pilot test, wherein the pilot test is the failing test which is the test among a plurality of failing tests that is the fastest test to perform, determining, for each test, untested revisions which has not been run wherein for at least one of said tests, there is at least one untested revision; requesting from the automated test s stem test results for the pilot test for each untested revision; receiving from the automated test system, the test results for the requested tests; identifying, using the received test results for the requested tests, a revision of said set of revisions for which said pilot test passed and which is earlier than said latest revision and being such that said pilot test failed for each revision of said set of revisions being later than the revision for which said pilot test passed and earlier than said latest revision; and requesting the automated test system to run all tests in the plurality of tests other than the pilot test on the revision, if untested, where said pilot test passed and on the revision, if untested, immediately following the revision for which said pilot test passed; receiving from the automated test system the test results for the requested tests; identifying, using the received test results for the requested tests, a list of tests comprising tests that passed on the revision where said pilot test passed and that filed on the revision immediately following the revision for which said pilot test passed; and providing a report indicating the revision immediately following the revision for which the pilot test passed and said list of the tests.