statsmodels passed NEW...and FTBFS withdh: unable to load addon sphinxdoc: Can't locate Debian/Debhelper/Sequence/sphinxdoc.pm in @INC
That file is in the sphinx-common package, which suggests that at least some of the sphinx dependencies need to be Build-Depends and not just Build-Depends-Indep.
Meanwhile, pandas FTBFS with several failing tests (all involving datetime) on arm*/mips*el and a broken attempt to skip a test (trying to raise nose.SkipTest without importing nose) on mips/s390x.