For Second Time In A Row, One Month Bill Auction Closes At 0.000%

This is the second time in a week that a bill auction has closed at exactly 0%. The Treasury has auctioned off $57 billion since December which is yielding absolutely nothing. Surely, this can go on forever. In fact, can the US reverse roll all of its $7 trillion in marketable securities in the form of 1 months? That would surely help the deficit as no interest has to be paid by the US. Ever.