natural rock floor -> concrete #91485

Job	Run time
skip-duplicates-code	4s
matrix-variables	1s
skip-duplicates-data	4s
Basic Build and Test (Clang 10, Ubuntu, Curses)	38m 55s
Clang 14, macOS 12, Tiles, Sound, x64 and arm64 Universal Binary	1h 18m 15s
GCC 9, Curses, LTO	57m 36s
Clang 12, Ubuntu, Tiles, ASan	2h 11m 9s
GCC 11, Ubuntu, Curses, ASan	2h 22m 24s
GCC 12, Ubuntu cross-compile to MinGW-Win64, Tiles, Sound	1h 10m 39s
GCC 9, Ubuntu, Tiles, Sound, CMake	20m 59s
emscripten / Build	2h 28m 8s
	11h 28m 14s

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