Add test to run tox warning-free in a subprocess.
#2256
| Job | Run time |
|---|---|
| 21s | |
| 10s | |
| 22s | |
| 53s |
tox warning-free in a subprocess.
#2256
| Job | Run time |
|---|---|
| 21s | |
| 10s | |
| 22s | |
| 53s |