and autopkgtest hangs? Re: Build failures without a build log

[Rebecca N. Palmer]

Thanks - the retry worked for pandas and theano.

statsmodels failed because it was temporarily BD-Uninstallable - this 
should now be fixed, so please retry it if that doesn't happen 
automatically.

Could this have also affected autopkgtests?  pandas is now being held in 
-proposed because a snakemake autopkgtest hung:
https://people.canonical.com/~ubuntu-archive/proposed-migration/update_excuses.html#pandas
https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-groovy/groovy/amd64/s/snakemake/20200817_223057_9ce51@/log.gz