PHILADELPHIA -- Meek Mill faces a potential prison sentence early next year after a judge in Philadelphia found the rapper guilty of probation violations.The judge said Thursday she's not sure she'll keep Mill on probation after he repeatedly ignored travel and other rules she set for him in recent years.The 28-year-old rapper, born Robert Williams, cannot work or perform before the Feb. 5 hearing except for community service.Mill testified that he knows his "whole life is on the line" and tried to follow the rules.Mill says he has dropped old friends from his entourage to spend time with his family and girlfriend Nicki Minaj. She was in court with him.Common Pleas Judge Genece Brinkley sent Mill back to jail for five months last year for similar violations.