cffi: fix build
#2357
| Job | Run time |
|---|---|
| 24s | |
| 22s | |
| 14m 3s | |
| 1h 14m 47s | |
| 14m 2s | |
| 14m 28s | |
| 22m 49s | |
| 26m 33s | |
| 10m 49s | |
| 11m 21s | |
| 11m 2s | |
| 41m 47s | |
| 43m 1s | |
| 12m 8s | |
| 1h 39m 39s | |
| 25m 26s | |
| 18m 41s | |
| 25m 50s | |
| 12m 33s | |
| 2m 51s | |
| 12m 59s | |
| 24m 31s | |
| 2m 53s | |
| 3m 23s | |
| 2m 37s | |
| 2m 35s | |
| 2m 55s | |
| 2m 57s | |
| 12m 37s | |
| 2m 32s | |
| 3m 7s | |
| 2m 22s | |
| 2m 14s | |
| 2m 51s | |
| 1m 44s | |
| 2m 49s | |
| 2m 32s | |
| 2m 54s | |
| 12m 39s | |
| 13s | |
| 9h 46m 0s |