manual_map recommends noncompilable code involving async code

[bugadani]

Lint name: manual_map

I tried this code:

async fn some_async_operation(u: u32) -> u32 {
    // This doesn't matter
    u
}

async fn some_operation(opt: Option<u32>) -> Option<u32> {
    match opt {
        Some(data) => Some(some_async_operation(data).await),
        None => None,
    }
}

I expected to see this happen: no manual_map lint

Instead, this happened: help: try this: `opt.map(|sender| some_async_operation(data).await)`

Meta

• cargo clippy -V: clippy 0.1.52 (98f8cce 2021-02-25)
• rustc -Vv:

  rustc 1.52.0-nightly (98f8cce6d 2021-02-25)
  binary: rustc
  commit-hash: 98f8cce6db6c6c6660eeffee2b3903104e547ecf
  commit-date: 2021-02-25
  host: x86_64-unknown-linux-gnu
  release: 1.52.0-nightly
  LLVM version: 11.0.1