docs: add error message for cargo test on darwin
#1236
| Job | Run time |
|---|---|
| 5m 39s | |
| 1m 28s | |
| 53s | |
| 8m 0s |
cargo test on darwin
#1236
| Job | Run time |
|---|---|
| 5m 39s | |
| 1m 28s | |
| 53s | |
| 8m 0s |