I'm leaving the bug report open since it's one thing if the tests are not
succeeding because the *tests* are broken and another thing if the tests
are not succeeding because the functionality it is testing is broken.
At least on i686 u-boot-tools, the latter seems to be the case often.

So before closing this bug report, let's bring this up upstream and also
let's disable features in the u-boot configuration that are broken but
we don't need anyway.