refactor: note that error can be null
#83
| Job | Run time |
|---|---|
| 1m 57s | |
| 2m 12s | |
| 5m 31s | |
| 6m 18s | |
| 5m 58s | |
| 6m 1s | |
| 8m 16s | |
| 2m 43s | |
| 6m 36s | |
| 2m 42s | |
| 6m 45s | |
| 1m 54s | |
| 2m 52s | |
| 7m 45s | |
| 6m 50s | |
| 2m 45s | |
| 7m 30s | |
| 6m 2s | |
| 5m 48s | |
| 8m 50s | |
| 2m 49s | |
| 7m 25s | |
| 3m 7s | |
| 3m 7s | |
| 7m 15s | |
| 3m 8s | |
| 7m 24s | |
| 2m 46s | |
| 2h 22m 16s |