tracing::instrument doesn't work in async_trait

[smichxq]

Feature Request

Crates

async-trait = {version = "0.1.81", eatures = ["full"]}
tracing = "0.1.40"
tracing-subscriber = "0.3.18"
sqlx = { version = "0.8.0" , features = ["mysql","runtime-tokio-rustls"]}

Motivation

#[async_trait]
pub trait CacheImp<T1, T2> {

    #[instrument(skip(pool))]
    async fn init(pool: &Pool<MySql>) -> Result<Self, CustomerErr> where Self: Sized;
}

in "#[instrument(skip(pool))]" told me:

mismatched types
expected struct Pin<Box<(dyn futures::Future<Output = Result<Self, CustomerErr>> + std::marker::Send + 'async_trait)>>
found unit type ()

if trait has many impl , i need write a lot #[instrument(skip(pool))]

i think the compiler won't forward attributes from a trait function declaration to all implementations, maybe macros don't have enough context to do that?

Are there other ways to fix it?