https://www.theregister.co.uk/2019/11/20/spacex_starship/

Video The Mk1 prototype of Elon Musk's Starship suffered what we're betting SpaceX will call an "anomaly" during a fuel tank test today.

Viewers of a internet live-stream of the test were able to make out the top of the tank protruding from the Starsh** stage as SpaceX filled the thing with fuel. There was the usual venting at first, from overspill, and then... kablooey. While the rocket and its fins remained upright, the top of the stage appeared to have buckled and of the tank there was no sign.