fix: allow (empty) sparse Hessians of linear functions #2316
| Job | Run time |
|---|---|
| 22m 23s | |
| 20m 32s | |
| 7m 56s | |
| 13m 16s | |
| 12m 58s | |
| 6m 11s | |
| 9m 13s | |
| 29m 2s | |
| 6m 36s | |
| 8m 46s | |
| 21m 41s | |
| 1h 1m 11s | |
| 21m 16s | |
| 14m 9s | |
| 17m 2s | |
| 7m 33s | |
| 37m 13s | |
| 11m 48s | |
| 15m 58s | |
| 11m 20s | |
| 10m 28s | |
| 28m 1s | |
| 6h 34m 33s |