cffi: fix build
#2393
| Job | Run time |
|---|---|
| 20s | |
| 30s | |
| 41m 42s | |
| 23m 17s | |
| 14m 54s | |
| 13m 56s | |
| 20m 59s | |
| 13m 59s | |
| 13m 31s | |
| 10m 22s | |
| 45m 12s | |
| 13m 33s | |
| 37m 26s | |
| 14m 7s | |
| 24m 35s | |
| 11m 55s | |
| 13m 36s | |
| 1h 31m 51s | |
| 28m 7s | |
| 2m 36s | |
| 21m 29s | |
| 3m 47s | |
| 3m 22s | |
| 2m 40s | |
| 3m 17s | |
| 3m 31s | |
| 33m 9s | |
| 2m 45s | |
| 2m 39s | |
| 3m 5s | |
| 2m 24s | |
| 4m 12s | |
| 2m 27s | |
| 9m 59s | |
| 2m 46s | |
| 2m 20s | |
| 2m 3s | |
| 2m 57s | |
| 13m 24s | |
| 16s | |
| 9h 19m 0s |