racket: refactor and add features, 8.14 -> 8.15, mark Darwin as badPlatforms
#55611
| Job | Run time |
|---|---|
| 1m 34s | |
| 6s | |
| 1m 5s | |
| 2m 45s |
badPlatforms
#55611
| Job | Run time |
|---|---|
| 1m 34s | |
| 6s | |
| 1m 5s | |
| 2m 45s |