Unity crashes on start

I use GNU/Linux x64. Unity 5.4.3f1 works (with 100% cpu usage). If I try to launch editor Unity 5.5.1f1 or Unity 5.6.0b3 - they are crashing on start. I can see only one error message - "abort" to stdout. It is reproducing all times on the empty unity-project. Please help. Where can I find any debug logs.