Bug#1020060: statsmodels sometimes FTBFS

[Rebecca N. Palmer]

It also doesn't fail on the buildds.  (The failed binNMU of statsmodels 
for Python 3.11 is instead the expected result of trying to build 
statsmodels on a Python version without pandas - pandas failed due to 
#1023965.)

Is there anything special about the mass-rebuild environment that might 
explain why it fails there and not elsewhere?  (Possibly the standard 
email should link to a description of that environment?)  Has it failed 
there more than once?