If you share needles with other drug users, you're 'signing your own death warrant'. [=you are doing something that will cause your own death]
The seller 'warrants' [=(more commonly) 'guarantees'] that the car has no defects.
This report 'warrants' careful study. [=this report should be given careful study]
(..) - What do you got for me? - Uniform clipped him for suspended license. However, he's a subject of an open investigation... More than one. He's one of Costello's. We're getting a warrant. Can't get an address off him. He paged his lawyer but the lawyer hasn't called back yet. - Who's the lawyer? (..)2006 The Departed
(..) You earned it. No more pencils, no more books. All right. - ... this is the state police. - And fire! State police, search warrant! State police, open the door! - Go, go, go! - Sir, yes, sir! - Is that understood? - Sir, yes, sir! (..)2006 The Departed