test

Immer persist #339

Job	Run time
build	14m 44s
docs	2m 6s
check (Debug, gnu-6, 14)	3m 50s
check (Debug, gnu-7, 14)	3m 51s
build-spm	51s
check (Debug, llvm-5, 14)	3m 35s
check (Debug, llvm-6, 14)	3m 41s
check (Release, gnu-6, 14)	4m 34s
check (Release, gnu-7, 14)	4m 31s
check (Release, llvm-5, 14)	5m 1s
check (Release, llvm-6, 14)	5m 7s
check (Debug, gnu-9, 14, coverage)	4m 31s
check (Debug, gnu-8, 17)	3m 55s
check (Debug, llvm-9, 17, fuzzers)	5m 17s
check (Debug, gnu-11, 20)	4m 32s
check (Debug, llvm-13, 20)	3m 59s
check (Debug, llvm-8, 14, sanitize)	5m 4s
check (Release, gnu-9, 14, benchmark)	19m 34s
check (Release, llvm-10, 14, benchmark)	19m 50s
	1h 58m 33s

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