Rustc: Simplify --sysroot code after rust#103660 and prepare 0.4.3-rc
#515
| Job | Run time |
|---|---|
| 32s | |
| 8s | |
| 39s | |
| 3s | |
| 35s | |
| 1m 45s | |
| 47s | |
| 5s | |
| 1m 39s | |
| 1m 39s | |
| 2m 18s | |
| 1m 37s | |
| 2m 11s | |
| 6s | |
| 8s | |
| 2m 38s | |
| 1m 29s | |
| 1m 54s | |
| 2m 46s | |
| 45s | |
| 2m 23s | |
| 53s | |
| 1m 34s | |
| 1m 22s | |
| 36s | |
| 1m 28s | |
| 32m 0s |