It looks like there is a new issue with swift 3.1. Since the upgrade there was a number of warning and the thread crashes during the JVM creation:
-> 0x10f5002b4: movl (%rsi), %eax
0x10f5002b6: leaq 0xf8(%rbp), %rsi
0x10f5002bd: vmovdqu %ymm0, (%rsi)
0x10f5002c1: vmovdqu %ymm7, 0x20(%rsi)
0x10f5002c6: vmovdqu %ymm8, 0x40(%rsi)
0x10f5002cb: vmovdqu %ymm15, 0x60(%rsi)