Given the combustible subject matter and the director’s reputation, French auteur Claire Denis has made a remarkably listless and unpersuasive film in Stars at Noon. Set during the Nicaraguan Sandanista revolution circa 1984, this adaptation of Denis Johnson’s novel published two years later centers on a couple of Americans of dubious character who misspend time in Central America before finally deciding it’s time to split when, in fact, it might be too late. This is the sort of misfire that, just because it comes from a hallowed French auteur, sometimes gets programmed in the Cannes competition even when it manifestly doesn’t deserve to be there.