README.md: Small updates to the out-of-tree sources section
#489
| Job | Run time |
|---|---|
| 0s | |
| 2h 26m 27s | |
| 57m 45s | |
| 2h 31m 21s | |
| 59m 12s | |
| 2h 29m 18s | |
| 1h 3m 11s | |
| 2h 38m 51s | |
| 1h 6m 54s | |
| 2h 46m 5s | |
| 58m 42s | |
| 2h 13m 4s | |
| 2h 8m 48s | |
| 2h 16m 27s | |
| 2h 11m 7s | |
| 3h 2m 22s | |
| 2h 25m 9s | |
| 3h 5m 30s | |
| 2h 24m 5s | |
| 53m 11s | |
| 1d 14h 37m 29s |