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New lint: `unused_async` changelog: Adds a lint, `unused_async`, which checks for async functions with no await statements `unused_async` is a lint that reduces code smell and overhead by encouraging async functions to be refactored into synchronous functions. Fixes #7176 ### Examples ```rust async fn get_random_number() -> i64 { 4 // Chosen by fair dice roll. Guaranteed to be random. } ``` Could be written as: ```rust fn get_random_number() -> i64 { 4 // Chosen by fair dice roll. Guaranteed to be random. } ``` Something like this, however, should **not** be caught by clippy: ```rust #[async_trait] trait AsyncTrait { async fn foo(); } struct Bar; #[async_trait] impl AsyncTrait for Bar { async fn foo() { println!("bar"); } } ``` |
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| auxiliary | ||
| cargo | ||
| ui | ||
| ui-cargo | ||
| ui-internal | ||
| ui-toml | ||
| compile-test.rs | ||
| dogfood.rs | ||
| fmt.rs | ||
| integration.rs | ||
| lint_message_convention.rs | ||
| missing-test-files.rs | ||
| versioncheck.rs | ||