CMakeToolchain: Log output on compiler state failure #16905

Job	Run time
Arch Linux	20m 14s
CUDA (on Arch)	7m 55s
Fedora	18m 0s
Gentoo	22m 27s
OpenSUSE	16m 50s
Ubuntu Bionic	14m 55s
Arch / PyPy	20m 11s
Ubuntu Rolling (gcc, g++)	19m 48s
Ubuntu Rolling (--unity=on -Ddefault_library=static, --no-unittests, gcc, g++)	13m 47s
Ubuntu Rolling (-Ddefault_library=both, --no-unittests, gcc, g++)	14m 13s
Ubuntu Rolling (clang, clang++)	23m 28s
Ubuntu Rolling (--unity=on, --no-unittests, clang, clang++)	15m 48s
Ubuntu Rolling (--cross ubuntu-armhf.json --cross linux-mingw-w64-64bit.json, 0, gcc, g++)	13m 34s
Ubuntu Rolling (--cross ubuntu-armhf.json --cross linux-mingw-w64-64bit.json, --unity=on, gcc, g++)	13m 44s
	3h 54m 54s

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