Check supported rust versions on CI #2448

Job	Run time
docs	22s
check-cfg	20s
msrv	50s
minimal	10s
quickchecking	12s
rustfmt-clippy	12s
test-book	7s
test (ubuntu-latest, 9.0, 1, 0, 0, 0, 0)	2m 5s
test-expectations (ubuntu-latest)	56s
test (ubuntu-latest, 9.0, 1, 0, 0, 1, 0)	2m 2s
test-expectations (macos-12)	1m 4s
test (ubuntu-latest, 9.0, 1, 0, 1, 0, 0)	1m 55s
test (ubuntu-latest, 9.0, 1, 0, 1, 1, 0)	1m 45s
test (ubuntu-latest, 9.0, 1, 1, 0, 0, 0)	2m 23s
test (ubuntu-latest, 9.0, 1, 1, 0, 1, 0)	2m 18s
test (ubuntu-latest, 9.0, 1, 1, 1, 0, 0)	2m 42s
test (ubuntu-latest, 9.0, 1, 1, 1, 1, 0)	2m 16s
test (ubuntu-latest, 16.0, 1, 0, 0, 0, 0)	4m 5s
test (ubuntu-latest, 16.0, 1, 0, 0, 1, 0)	4m 9s
test (ubuntu-latest, 16.0, 1, 0, 1, 0, 0)	4m 25s
test (ubuntu-latest, 16.0, 1, 0, 1, 1, 0)	5m 4s
test (ubuntu-latest, 16.0, 1, 1, 0, 0, 0)	4m 49s
test (ubuntu-latest, 16.0, 1, 1, 0, 1, 0)	4m 46s
test (ubuntu-latest, 16.0, 1, 1, 1, 0, 0)	4m 50s
test (ubuntu-latest, 16.0, 1, 1, 1, 1, 0)	4m 47s
test (ubuntu-latest, 16.0, 0, 0, 1)	1m 53s
test (macos-12, 9.0, 0, 0, 0)	1m 36s
success	1s
	1h 2m 4s

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