A high concept time-travel scifi from writer/director/etc. Shane Carruth, a former engineer with a microscopic budget. A pointer from Peter Sobczynski's review of Predestination (2014). All the high science happens in a suburban Texas garage and self-storage facility. I can't say I followed the details. The overlapping dialogue, sometimes mumbled and often clearly intended to be obscurantist, is sometimes frustrating. I guess the mechanism at the core of the story is one way to deal with continuity errors in films. It might pay a rewatch.
Roger Ebert: three-and-a-half stars. Peter Bradshaw got it backwards: they travel into the past, not the future. A. O. Scott knew better than to even get that concrete. Everyone could feel their neurons firing.