mingw: work around file sharing violations with open()
#1834
| Job | Run time |
|---|---|
| 7s | |
| 45s | |
| 0s | |
| 7m 30s | |
| 1m 45s | |
| 9m 24s | |
| 3m 56s | |
| 21m 27s | |
| 10m 3s | |
| 21m 26s | |
| 10m 34s | |
| 10m 53s | |
| 21m 24s | |
| 10m 11s | |
| 10m 18s | |
| 21m 49s | |
| 21m 38s | |
| 21m 44s | |
| 3m 28s | |
| 3m 59s | |
| 4m 51s | |
| 0s | |
| 9m 47s | |
| 6m 58s | |
| 5m 38s | |
| 5m 49s | |
| 6m 3s | |
| 7m 43s | |
| 5m 49s | |
| 6m 28s | |
| 7m 34s | |
| 8m 49s | |
| 4h 47m 50s |