docs: add error message for cargo test on darwin
#1230
| Job | Run time |
|---|---|
| 55s | |
| 6m 14s | |
| 1m 32s | |
| 8m 41s |
cargo test on darwin
#1230
| Job | Run time |
|---|---|
| 55s | |
| 6m 14s | |
| 1m 32s | |
| 8m 41s |