Python 3.9.0 build

NumPy now has wheels out, and the xenial-arm64 build now passes on my fork:

Please could you restart it at https://travis-ci.com/github/travis-ci/cpython-builder/builds/192795784? Thank you!

You are building 3.8-dev. Need to trigger a custom build with setting VERSION to build another version.

A post was split to a new topic: “Negative credit balance” error despite having credits available

Please could xenial-arm64 be rebuilt with VERSION set to 3.9.0?

I tested again, and xenial-arm64 now passes for 3.9. Thanks!