default to --check-level=exhaustive internally / several related cleanups
#11791
| Job | Run time |
|---|---|
| 1m 46s | |
| 3m 34s | |
| 5m 27s | |
| 3m 45s | |
| 6m 12s | |
| 3m 53s | |
| 24m 37s |