Android test fails - "The test completed but there were no successful results"

I’m having problems with the Android tests: they seem to be taking longer than usual to run, and when they do they give the following result:

The test completed but there were no successful results.
First View: Test Data Missing

Is this a known problem?

Sorry, there was a day or so where the agents were acting up and needed to be rebooted. Everything should be better now.

Great - thanks for that.

And thanks for running such an awesome service!