Script not being run by Windows builder

A year ago I updated a travis config file to run on Windows and it worked fine, but for various reasons (including the fact that the tests failed) the pull request was never merged. I’ve now rebased and the exact same config file does nothing.
Here is the build from a year ago:
Here is the one from yesterday:

I’ve not been paying too much attention to this repo for the year, so I’m wondering if something in the environment has changed that I didn’t see. Of course it could also be the changes in our repo, but given it does’t seem to fail, it just doesn’t run anything I don’t see why that would be.

Any help greatly appreciated!