The travis setup for all the runtime repos has been changed to use the nightly tag to indicate the most recent build from the master branch.
I've submitted a PR to update runtimes.json for core repo's master branch accordingly [1]. My plan is that 48 hours after [1] merges, I will go through all the runtime images on dockerhub and change the latest tag to refer to the image that was built from the last official release (1.13.0-incubating). In some cases (due to image naming convention changes after the 1.13.0-incubating release), there is no such tag. I believe in most (all?) cases I can simply do some docker operations to publish the appropriate version of the old-style name image under the new-style name with the 1.13.0-incubating tag. --dave [1] https://github.com/apache/incubator-openwhisk/pull/4529
