nightly throws needless_return warning on anyhow::bail!

[kaffarell]

When using anyhow::bail! like this (which is a really common use case):

fn cool_function(i: i32) -> Result<i32, anyhow::Error>{
    match i {
        1 => Ok(1),
        2 => Ok(2),
        _ => anyhow::bail!("out of range"),
    }
}

the nightly rust-analyzer gives this diagnostic warning:

replace <expr>; with <expr> [needless_return]

which is expected because bail! expands roughly to return Err(...), which obviously triggers the above error.

This only happens with the nightly rust-analyzer (rust-analyzer 0.4.1863-standalone) and I don't get this warning with clippy.

Original issue in anyhow repo: dtolnay/anyhow#351