CI: Windows builds started failing

[jreback]

https://ci.appveyor.com/project/jreback/pandas-465/build/1.0.847/job/fb6cmln4nrxw52ef

the commit was just some tests

any ideas?

[jreback]

I think this is related to: conda/conda-build#1001

[jreback]

closed by: cfbb24f

build is now failing on an actual test (and not on a build): https://ci.appveyor.com/project/jreback/pandas/build/job/q22klk7yjb0c4osl
cc @sinhrks