Telling people that your random source passes the die-hard test but at the same time only using the current time as the seed is just pure evil. Imagine spinning up a couple of thousands images with a JVM on Amazon. You are going to see collisions among the seed values a lot sooner than you think. Especially if the granularity of System.nanoTime() is not actual 1 nanosecond. You need to use some kind of random source for the seeding or at least mix in the process ID/host ID with the current time. Obviously RDRAND would be a good choice if available. This is a problem Random and TLR suffers from as well.
Also I'm really worried about the seed value of just 64 bit. That is not a lot if SR is sold as a quality random number generator. People are going to experience collisions (albeit rarely) while using it. - Kasper
