build

fix: reduce MSRV to 1.79 from 1.80 #189

Job	Run time
fmt	33s
clippy	1m 3s
test	1m 40s
build (stable, --features "")	1m 32s
build (stable, --all-features)	2m 31s
build (stable, --no-default-features)	1m 41s
build (1.79, --features "")	2m 34s
build (1.79, --all-features)	3m 37s
build (1.79, --no-default-features)	2m 28s
build (beta, --features "")	1m 41s
build (beta, --all-features)	2m 49s
build (beta, --no-default-features)	1m 51s
build (nightly, --features "")	1m 45s
build (nightly, --all-features)	1m 45s
build (nightly, --no-default-features)	1m 43s
	29m 13s

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