champ for_each_chunk_p #326

Job	Run time
build-spm	47s
build	40s
check (Debug, gnu-6, 14)	12m 5s
docs	1m 31s
check (Debug, gnu-7, 14)	14m 53s
check (Debug, llvm-5, 14)	8m 57s
check (Debug, llvm-6, 14)	11m 11s
check (Release, gnu-6, 14)	15m 15s
check (Release, gnu-7, 14)	22m 13s
check (Release, llvm-5, 14)	16m 41s
check (Release, llvm-6, 14)	17m 50s
check (Debug, gnu-9, 14, coverage)	16m 58s
check (Debug, gnu-8, 17)	13m 25s
check (Debug, llvm-9, 17, fuzzers)	11m 31s
check (Debug, gnu-11, 20)	14m 24s
check (Debug, llvm-13, 20)	9m 16s
check (Debug, llvm-8, 14, sanitize)	15m 36s
check (Release, gnu-9, 14, benchmark)	37m 9s
check (Release, llvm-10, 14, benchmark)	36m 6s
	4h 36m 28s

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