Report on C++ visibility and other attributes #3013

Job	Run time
rustfmt-clippy	16s
docs	24s
minimal	18s
check-cfg	22s
msrv	49s
quickchecking	19s
test (ubuntu-latest, 9.0, 0, 0, 0, 0)	1m 46s
test-expectations (ubuntu-latest)	46s
test (ubuntu-latest, 9.0, 0, 0, 1, 0)	1m 43s
test-no-headers	28s
test (ubuntu-latest, 9.0, 0, 1, 0, 0)	1m 43s
test-expectations (macos-latest)	46s
test-book	7s
test (ubuntu-latest, 9.0, 0, 1, 1, 0)	1m 46s
test (ubuntu-latest, 9.0, 1, 0, 0, 0)	2m 17s
test (ubuntu-latest, 9.0, 1, 0, 1, 0)	2m 22s
test (ubuntu-latest, 9.0, 1, 1, 0, 0)	2m 10s
test (ubuntu-latest, 9.0, 1, 1, 1, 0)	2m 9s
test (ubuntu-latest, 16.0, 0, 0, 0, 0)	4m 15s
test (ubuntu-latest, 16.0, 0, 0, 1, 0)	4m 4s
test (ubuntu-latest, 16.0, 0, 1, 0, 0)	4m 4s
test (ubuntu-latest, 16.0, 0, 1, 1, 0)	4m 8s
test (ubuntu-latest, 16.0, 1, 0, 0, 0)	5m 20s
test (ubuntu-latest, 16.0, 1, 0, 1, 0)	4m 53s
test (ubuntu-latest, 16.0, 1, 1, 0, 0)	5m 4s
test (ubuntu-latest, 16.0, 1, 1, 1, 0)	5m 13s
test (ubuntu-latest, 16.0, 0, 0, 1)	2m 30s
test (macos-latest, 16.0, 0, 0, 0)	2m 4s
success	1s
	1h 2m 7s

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