Apologies for the downtime, we have had some issues where we had to provision new hardware for the server, everything is back up now and should be running including the nightlies.
On top of that, word has come that there's a domain out there that is literally taking our releases and using it for their own, just as a reminder, if you haven't gotten it from our github releases page found at https://github.com/visualboyadvance-m/visualboyadvance-m or at our http://nightly.vba-m.com then treat all others as untrusted. Remember, trust official sources only.