Reuse capacity when possible in <BytesMut as Buf>::advance impl
#629
| Job | Run time |
|---|---|
| 10m 46s | |
| 1m 45s | |
| 1m 50s | |
| 26s | |
| 32s | |
| 2m 41s | |
| 35s | |
| 8s | |
| 1m 6s | |
| 29s | |
| 1m 3s | |
| 8s | |
| 2m 6s | |
| 3m 5s | |
| 1m 33s | |
| 28m 13s |