test

Immer persist #384

Job	Run time
build-spm	32s
build	18m 48s
docs	1m 13s
check (Debug, gnu-6, 14)	3m 3s
check (Debug, gnu-7, 14)	3m 6s
check (Debug, llvm-5, 14)	2m 46s
check (Debug, llvm-6, 14)	2m 41s
check (Release, gnu-6, 14)	3m 41s
check (Release, gnu-7, 14)	3m 48s
check (Release, llvm-5, 14)	4m 1s
check (Release, llvm-6, 14)	4m 22s
check (Debug, gnu-9, 14, coverage)	3m 42s
check (Debug, gnu-8, 17)	3m 6s
check (Debug, llvm-9, 17, fuzzers)	4m 2s
check (Debug, gnu-11, 20)	3m 29s
check (Debug, llvm-13, 20)	3m 6s
check (Debug, llvm-8, 14, sanitize)	3m 56s
check (Release, gnu-9, 14, benchmark)	18m 56s
check (Release, llvm-10, 14, benchmark)	19m 14s
	1h 47m 32s

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