tracing: prepare to release v0.1.29

# 0.1.29 (October 5th, 2021

This release adds support for recording `Option<T> where T: Value` as
typed `tracing` field values. It also includes significant performance
improvements for functions annotated with the `#[instrument]` attribute
when the generated span is disabled.

### Changed

- `tracing-core`: updated to v0.1.21
- `tracing-attributes`: updated to v0.1.19

### Added

- **field**: `Value` impl for `Option<T> where T: Value` ([#1585])
- **attributes**: - improved performance when skipping
  `#[instrument]`-generated spans below the max level ([#1600], [#1605],
  [#1614], [#1616], [#1617])

### Fixed

- **instrument**: added missing `Future` implementation for
  `WithSubscriber`, making the `WithDispatch` extension trait actually
  useable ([#1602])
- Documentation fixes and improvements ([#1595], [#1601], [#1597])

Thanks to @BrianBurgers, @mattiast, @DCjanus, @oli-obk, and @matklad for
contributing to this release!

[#1585]: #1585
[#1595]: #1596
[#1597]: #1597
[#1600]: #1600
[#1601]: #1601
[#1602]: #1602
[#1614]: #1614
[#1616]: #1616
[#1617]: #1617

tracing/CHANGELOG.md

@@ -1,3 +1,40 @@
+# 0.1.29 (October 5th, 2021
+
+This release adds support for recording `Option<T> where T: Value` as typed
+`tracing` field values. It also includes significant performance improvements
+for functions annotated with the `#[instrument]` attribute when the generated
+span is disabled.
+
+### Changed
+
+- `tracing-core`: updated to v0.1.21
+- `tracing-attributes`: updated to v0.1.19
+
+### Added
+
+- **field**: `Value` impl for `Option<T> where T: Value` ([#1585])
+- **attributes**: - improved performance when skipping `#[instrument]`-generated
+  spans below the max level ([#1600], [#1605], [#1614], [#1616], [#1617])
+
+### Fixed
+
+- **instrument**: added missing `Future` implementation for `WithSubscriber`,
+  making the `WithDispatch` extension trait actually useable ([#1602])
+- Documentation fixes and improvements ([#1595], [#1601], [#1597])
+
+Thanks to @brianburgers, @mattiast, @DCjanus, @oli-obk, and @matklad for
+contributing to this release!
+
+[#1585]: https://github.com/tokio-rs/tracing/pull/1585
+[#1595]: https://github.com/tokio-rs/tracing/pull/1596
+[#1597]: https://github.com/tokio-rs/tracing/pull/1597
+[#1600]: https://github.com/tokio-rs/tracing/pull/1600
+[#1601]: https://github.com/tokio-rs/tracing/pull/1601
+[#1602]: https://github.com/tokio-rs/tracing/pull/1602
+[#1614]: https://github.com/tokio-rs/tracing/pull/1614
+[#1616]: https://github.com/tokio-rs/tracing/pull/1616
+[#1617]: https://github.com/tokio-rs/tracing/pull/1617
+
 # 0.1.28 (September 17th, 2021)
 
 This release fixes an issue where the RustDoc documentation was rendered

tracing/Cargo.toml

@@ -8,7 +8,7 @@ name = "tracing"
 #   - README.md
 # - Update CHANGELOG.md.
 # - Create "v0.1.x" git tag
-version = "0.1.28"
+version = "0.1.29"
 authors = ["Eliza Weisman <[email protected]>", "Tokio Contributors <[email protected]>"]
 license = "MIT"
 readme = "README.md"

tracing/README.md

@@ -16,9 +16,9 @@ Application-level tracing for Rust.
 [Documentation][docs-url] | [Chat][discord-url]
 
 [crates-badge]: https://img.shields.io/crates/v/tracing.svg
-[crates-url]: https://crates.io/crates/tracing/0.1.28
+[crates-url]: https://crates.io/crates/tracing/0.1.29
 [docs-badge]: https://docs.rs/tracing/badge.svg
-[docs-url]: https://docs.rs/tracing/0.1.28
+[docs-url]: https://docs.rs/tracing/0.1.29
 [docs-master-badge]: https://img.shields.io/badge/docs-master-blue
 [docs-master-url]: https://tracing-rs.netlify.com/tracing
 [mit-badge]: https://img.shields.io/badge/license-MIT-blue.svg
@@ -251,7 +251,7 @@ my_future
 is as long as the future's.
 
 The second, and preferred, option is through the
-[`#[instrument]`](https://docs.rs/tracing/0.1.28/tracing/attr.instrument.html)
+[`#[instrument]`](https://docs.rs/tracing/0.1.29/tracing/attr.instrument.html)
 attribute:
 
 ```rust
@@ -298,7 +298,7 @@ span.in_scope(|| {
 // Dropping the span will close it, indicating that it has ended.
 ```
 
-The [`#[instrument]`](https://docs.rs/tracing/0.1.28/tracing/attr.instrument.html) attribute macro
+The [`#[instrument]`](https://docs.rs/tracing/0.1.29/tracing/attr.instrument.html) attribute macro
 can reduce some of this boilerplate:
 
 ```rust

tracing/src/lib.rs

@@ -795,7 +795,7 @@
 //!
 //!   ```toml
 //!   [dependencies]
-//!   tracing = { version = "0.1.28", default-features = false }
+//!   tracing = { version = "0.1.29", default-features = false }
 //!   ```
 //!
 //! <pre class="ignore" style="white-space:normal;font:inherit;">
@@ -847,7 +847,7 @@
 //! [flags]: #crate-feature-flags
 #![cfg_attr(not(feature = "std"), no_std)]
 #![cfg_attr(docsrs, feature(doc_cfg), deny(rustdoc::broken_intra_doc_links))]
-#![doc(html_root_url = "https://docs.rs/tracing/0.1.28")]
+#![doc(html_root_url = "https://docs.rs/tracing/0.1.29")]
 #![doc(
     html_logo_url = "https://raw.githubusercontent.com/tokio-rs/tracing/master/assets/logo-type.png",
     issue_tracker_base_url = "https://github.com/tokio-rs/tracing/issues/"