test

Immer persist #420

Job	Run time
build-spm	27s
check (Debug, gnu-6, 14)	3m 0s
build	57s
docs	1m 5s
check (Debug, gnu-7, 14)	3m 2s
check (Debug, llvm-5, 14)	2m 50s
check (Debug, llvm-6, 14)	2m 53s
check (Release, gnu-6, 14)	3m 44s
check (Release, gnu-7, 14)	4m 5s
check (Release, llvm-5, 14)	4m 4s
check (Release, llvm-6, 14)	4m 13s
check (Debug, gnu-9, 14, coverage)	4m 5s
check (Debug, gnu-8, 17)	3m 8s
check (Debug, llvm-9, 17, fuzzers)	4m 11s
check (Debug, gnu-11, 20)	3m 39s
check (Debug, llvm-13, 20)	3m 7s
check (Debug, llvm-8, 14, sanitize)	4m 14s
check (Release, gnu-9, 14, benchmark)	18m 34s
check (Release, llvm-10, 14, benchmark)	18m 49s
	1h 30m 7s

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