Unfortunately joblib fails its test on s390x, and I don't have any time
to dig further -- could you take a look please?
https://ci.debian.net/data/autopkgtest/testing/s390x/j/joblib/26916492/log.gz
> assert result.dtype == expected.dtype E AssertionError: assert dtype('<i8') == dtype('int64') E + where dtype('<i8') = memmap([0, 1, 2, 3, 4]).dtype E + and dtype('int64') = array([0, 1, 2, 3, 4]).dtype