https://bugzilla.wikimedia.org/show_bug.cgi?id=73120
--- Comment #4 from Fabian CommodoreFabianus@gmx.de --- Maybe there is a side effect. I checked all four occurences listed here and for all of them the test before 'test_image_usage_in_redirects' failed. I also checked a some other successful tests and there 'test_image_usage_in_redirects' hasn't failed.