fix empty old_ref bug caused by split _
#574
| Job | Run time |
|---|---|
| 4m 3s | |
| 5m 27s | |
| 3m 47s | |
| 5m 22s | |
| 18m 39s |
old_ref bug caused by split _
#574
| Job | Run time |
|---|---|
| 4m 3s | |
| 5m 27s | |
| 3m 47s | |
| 5m 22s | |
| 18m 39s |