default to --check-level=exhaustive internally / several related cleanups
#11795
| Job | Run time |
|---|---|
| 1m 51s | |
| 5m 31s | |
| 6m 16s | |
| 3m 25s | |
| 3m 31s | |
| 3m 47s | |
| 24m 21s |