Seems like this test fails for some reason on some systems (see below details).
This is very important because rtyler says this is the error that is happening on the trusted infra, and is preventing the Docker images to be published...

https://gist.github.com/rtyler/37696437530e35e69bf5fd904eceaaa9

It should be fixable, since I can apparently reproduce: I just stumbled into it myself as I was running a make check on a brand new EC2 instance while trying to get a backend running publicly to wrap up JENKINS-52050