Make the Builder::build result type consistent with the Sapling bui…
#3065
| Job | Run time |
|---|---|
| 1m 40s | |
| 1m 16s | |
| 53s | |
| 10s | |
| 8m 33s | |
| 2m 30s | |
| 1m 59s | |
| 2m 34s | |
| 12s | |
| 7m 49s | |
| 8m 8s | |
| 9m 59s | |
| 45m 43s |