[Checkins] [zopefoundation/Zope] e9d8f2: Try without upgrade.

[Michael Howitz]

  Branch: refs/heads/py39
  Home:   https://github.com/zopefoundation/Zope
  Commit: e9d8f2c036821cd944f5588d51769ef1cc66a184
      https://github.com/zopefoundation/Zope/commit/e9d8f2c036821cd944f5588d51769ef1cc66a184
  Author: Michael Howitz <mh at gocept.com>
  Date:   2020-02-11 (Tue, 11 Feb 2020)

  Changed paths:
    M .travis.yml

  Log Message:
  -----------
  Try without upgrade.