clippy: fix extra errors and enforce target-applies-to-host in xtask
#9580
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target-applies-to-host in xtask
#9580
| Job | Run time |
|---|---|
| 0s | |
| 9m 6s | |
| 9s | |
| 10s | |
| 0s | |
| 0s | |
| 9m 25s |