Build error when using tracing crate

[krojew]

Some changes since version 0.1.42 cause problems when also using the tracing crate. This example code:

#[async_trait]
impl SomeTrait for SomeType {
    #[instrument(skip(self), err)]
    async fn some_fn(&self) -> Result<(), String> {
        ...
    }
}

results in the following build error:

expected struct `Pin`, found enum `std::result::Result`
this expression has type `Pin<Box<impl futures::Future>>`

0.1.42 works fine. Rust version: rustc 1.52.0-nightly (45b3c2851 2021-03-04)

[dtolnay]

This needs to be fixed in the tracing crate. There is some work in tokio-rs/tracing#1228.

[nightmared]

This is merged in tracing, I don't know if a release will be published soon, but I guess you can point to the git repo meanwhile.

[nightmared]

Edit: tracing-attributes 0.1.14 was just published! See https://crates.io/crates/tracing-attributes/0.1.14