TMP COMMIT: Try building on xcode9

jkseppan · jkseppan · commit c97b09eddb8f · 2020-07-31T08:36:55.000+03:00
remove this commit before merging
diff --git a/.travis.yml b/.travis.yml
@@ -87,8 +87,8 @@ matrix:
       env:
         - PRE=--pre
     - os: osx
+      osx_image: xcode9
       language: generic  # https://github.com/travis-ci/travis-ci/issues/2312
-      only: master
       cache:
         # As for now travis caches only "$HOME/.cache/pip"
         # https://docs.travis-ci.com/user/caching/#pip-cache
