make use of locked markers in lock file version 2.1 and thereby avoid dependency walk failed
#519
| Job | Run time |
|---|---|
| 3m 0s | |
| 3m 3s | |
| 3m 3s | |
| 2m 59s | |
| 3m 7s | |
| 3m 34s | |
| 3m 16s | |
| 2m 58s | |
| 2m 58s | |
| 2m 56s | |
| 3m 47s | |
| 3m 56s | |
| 3m 37s | |
| 3m 37s | |
| 3m 36s | |
| 49m 27s |