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]
(..) For in the very torrent, tempest and, as I may say, the whirlwind of passion... ...you must acquire and beget a temperance that may give it smoothness - I warrant your honour - Be not too tame neither Let your own discretion be your tutor Suit the action to the word, the word to the action (..)2015 Hamlet