Add Windows integration tests showing that subst is handled inconsistently
#6057
| Job | Run time |
|---|---|
| 3m 13s | |
| 1m 46s | |
| 56s | |
| 5m 55s |
subst is handled inconsistently
#6057
| Job | Run time |
|---|---|
| 3m 13s | |
| 1m 46s | |
| 56s | |
| 5m 55s |