Update objc2 to v0.4
#781
| Job | Run time |
|---|---|
| 18s | |
| 3m 2s | |
| 1m 50s | |
| 1m 45s | |
| 1m 33s | |
| 2m 25s | |
| 3m 9s | |
| 2m 43s | |
| 1m 57s | |
| 1m 27s | |
| 1m 18s | |
| 1m 3s | |
| 1m 13s | |
| 1m 30s | |
| 3m 1s | |
| 1m 31s | |
| 1m 24s | |
| 1m 36s | |
| 1m 19s | |
| 1m 57s | |
| 1m 54s | |
| 1m 51s | |
| 1m 13s | |
| 1m 12s | |
| 1m 3s | |
| 41s | |
| 48s | |
| 28s | |
| 3m 25s | |
| 1m 16s | |
| 1m 16s | |
| 2m 10s | |
| 1m 21s | |
| 1m 58s | |
| 1m 15s | |
| 1m 46s | |
| 1m 23s | |
| 1m 25s | |
| 57s | |
| 59s | |
| 1m 11s | |
| 35s | |
| 2m 14s | |
| 1h 8m 22s |