test

Immer persist #400

Job	Run time
build-spm	26s
check (Debug, gnu-6, 14)	2m 56s
build	57s
check (Debug, gnu-7, 14)	3m 8s
docs	1m 9s
check (Debug, llvm-5, 14)	2m 47s
check (Debug, llvm-6, 14)	2m 49s
check (Release, gnu-6, 14)	3m 52s
check (Release, gnu-7, 14)	3m 45s
check (Release, llvm-5, 14)	3m 52s
check (Release, llvm-6, 14)	4m 7s
check (Debug, gnu-9, 14, coverage)	4m 8s
check (Debug, gnu-8, 17)	3m 3s
check (Debug, llvm-9, 17, fuzzers)	4m 5s
check (Debug, gnu-11, 20)	3m 35s
check (Debug, llvm-13, 20)	3m 15s
check (Debug, llvm-8, 14, sanitize)	3m 48s
check (Release, gnu-9, 14, benchmark)	18m 52s
check (Release, llvm-10, 14, benchmark)	19m 7s
	1h 29m 41s

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