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# 0.1.23 (October 6, 2022) This release of `tracing-attributes` fixes a bug where compiler diagnostic spans for type errors in `#[instrument]`ed `async fn`s have the location of the `#[instrument]` attribute rather than the location of the actual error, and a bug where inner attributes in `#[instrument]`ed functions would cause a compiler error. ### Fixed - Fix incorrect handling of inner attributes in `#[instrument]`ed functions ([#2307]) - Add fake return to improve spans generated for type errors in `async fn`s ([#2270]) - Updated `syn` dependency to fix compilation with `-Z minimal-versions` ([#2246]) Thanks to new contributors @compiler-errors and @e-nomem, as well as @CAD97, for contributing to this release! [#2307]: https://github.com/tokio-rs/tracing/pull/2307 [#2270]: https://github.com/tokio-rs/tracing/pull/2270 [#2246]: https://github.com/tokio-rs/tracing/pull/2246
tracing-attributes
Macro attributes for application-level tracing.
Overview
tracing is a framework for instrumenting Rust programs to collect
structured, event-based diagnostic information. This crate provides the
#[instrument] attribute for automatically instrumenting functions using
tracing.
Note that this macro is also re-exported by the main tracing crate.
Compiler support: requires rustc 1.49+
Usage
First, add this to your Cargo.toml:
[dependencies]
tracing-attributes = "0.1.23"
This crate provides the #[instrument] attribute for instrumenting a function
with a tracing span. For example:
use tracing_attributes::instrument;
#[instrument]
pub fn my_function(my_arg: usize) {
// ...
}
Supported Rust Versions
Tracing is built against the latest stable release. The minimum supported version is 1.49. The current Tracing version is not guaranteed to build on Rust versions earlier than the minimum supported version.
Tracing follows the same compiler support policies as the rest of the Tokio project. The current stable Rust compiler and the three most recent minor versions before it will always be supported. For example, if the current stable compiler version is 1.45, the minimum supported version will not be increased past 1.42, three minor versions prior. Increasing the minimum supported compiler version is not considered a semver breaking change as long as doing so complies with this policy.
License
This project is licensed under the MIT license.
Contribution
Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in Tokio by you, shall be licensed as MIT, without any additional terms or conditions.