[Python-Dev] Appveyor builds fail on Windows for 3.6 backports.

[Terry Reedy]

Example: appveyor passes for
https://github.com/python/cpython/pull/2335#discussion_r123724857

Appveyor build fails for 3.6 backport
https://github.com/python/cpython/pull/2359
https://ci.appveyor.com/project/python/cpython/build/3.6.1+.3673
The compile and build errors have nothing to do with the patch.

This failure is routine; turning off appveyor for 3.6, until fixed, 
would reduce noise.

I presume this is a workflow issue, but I don't know if Windows experts 
would see it.

-- 
Terry Jan Reedy