The compiler always crashes while compiling <mutex> header from Visual Studio 2015 RC1. Bug is absolutely reproducible, it is enough to attempt to compile a .cpp file with single line:
Intel(R) C++ Intel(R) 64 Compiler XE for applications running on Intel(R) 64, Version 184.108.40.206 Build 20150407
Copyright (C) 1985-2015 Intel Corporation. All rights reserved.
C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\mutex(449): internal error: assertion failed at: "shared/cfe/edgcpfe/templates.c", line 28214