core: prepare to release v0.1.31 (#2594)

# 0.1.31 (May 11, 2023)

This release of `tracing-core` fixes a bug that caused threads which
call `dispatcher::get_default` _before_ a global default subscriber is
set to never see the global default once it is set. In addition, it
includes improvements for instrumentation performance in some cases,
especially when using a global default dispatcher.

### Fixed

- Fixed incorrect thread-local caching of `Dispatch::none` if
  `dispatcher::get_default` is called before
  `dispatcher::set_global_default` (#2593)

### Changed

- Cloning a `Dispatch` that points at a global default subscriber no
  longer requires an `Arc` reference count increment, improving
  performance substantially (#2593)
- `dispatcher::get_default` no longer attempts to access a thread local
  if the scoped dispatcher is not in use, improving performance when the
  default dispatcher is global (#2593)
- Added `#[inline]` annotations called by the `event!` and `span!`
  macros to reduce the size of macro-generated code and improve
  recording performance (#2555)

Thanks to new contributor @ldm0 for contributing to this release!

tracing-core/CHANGELOG.md

@@ -1,3 +1,34 @@
+# 0.1.31 (May 11, 2023)
+
+This release of `tracing-core` fixes a bug that caused threads which call
+`dispatcher::get_default` _before_ a global default subscriber is set to never
+see the global default once it is set. In addition, it includes improvements for
+instrumentation performance in some cases, especially when using a global
+default dispatcher.
+
+### Fixed
+
+- Fixed incorrect thread-local caching of `Dispatch::none` if
+  `dispatcher::get_default` is called before `dispatcher::set_global_default`
+  ([#2593])
+
+### Changed
+
+- Cloning a `Dispatch` that points at a global default subscriber no longer
+  requires an `Arc` reference count increment, improving performance
+  substantially ([#2593])
+- `dispatcher::get_default` no longer attempts to access a thread local if the
+  scoped dispatcher is not in use, improving performance when the default
+  dispatcher is global ([#2593])
+- Added `#[inline]` annotations called by the `event!` and `span!` macros to
+  reduce the size of macro-generated code and improve recording performance
+  ([#2555])
+
+Thanks to new contributor @ldm0 for contributing to this release!
+
+[#2593]: https://github.com/tokio-rs/tracing/pull/2593
+[#2555]: https://github.com/tokio-rs/tracing/pull/2555
+
 # 0.1.30 (October 6, 2022)
 
 This release of `tracing-core` adds a new `on_register_dispatch` method to the

tracing-core/Cargo.toml

@@ -8,7 +8,7 @@ name = "tracing-core"
 #   - README.md
 # - Update CHANGELOG.md.
 # - Create "v0.1.x" git tag.
-version = "0.1.30"
+version = "0.1.31"
 authors = ["Tokio Contributors <team@tokio.rs>"]
 license = "MIT"
 readme = "README.md"

tracing-core/README.md

@@ -16,9 +16,9 @@ Core primitives for application-level tracing.
 [Documentation][docs-url] | [Chat][discord-url]
 
 [crates-badge]: https://img.shields.io/crates/v/tracing-core.svg
-[crates-url]: https://crates.io/crates/tracing-core/0.1.30
+[crates-url]: https://crates.io/crates/tracing-core/0.1.31
 [docs-badge]: https://docs.rs/tracing-core/badge.svg
-[docs-url]: https://docs.rs/tracing-core/0.1.30
+[docs-url]: https://docs.rs/tracing-core/0.1.31
 [docs-master-badge]: https://img.shields.io/badge/docs-master-blue
 [docs-master-url]: https://tracing-rs.netlify.com/tracing_core
 [mit-badge]: https://img.shields.io/badge/license-MIT-blue.svg
@@ -79,22 +79,22 @@ The following crate feature flags are available:
 
   ```toml
   [dependencies]
-  tracing-core = { version = "0.1.30", default-features = false }
+  tracing-core = { version = "0.1.31", default-features = false }
   ```
 
   **Note**:`tracing-core`'s `no_std` support requires `liballoc`.
 
 [`tracing`]: ../tracing
-[`span::Id`]: https://docs.rs/tracing-core/0.1.30/tracing_core/span/struct.Id.html
-[`Event`]: https://docs.rs/tracing-core/0.1.30/tracing_core/event/struct.Event.html
-[`Subscriber`]: https://docs.rs/tracing-core/0.1.30/tracing_core/subscriber/trait.Subscriber.html
-[`Metadata`]: https://docs.rs/tracing-core/0.1.30/tracing_core/metadata/struct.Metadata.html
-[`Callsite`]: https://docs.rs/tracing-core/0.1.30/tracing_core/callsite/trait.Callsite.html
-[`Field`]: https://docs.rs/tracing-core/0.1.30/tracing_core/field/struct.Field.html
-[`FieldSet`]: https://docs.rs/tracing-core/0.1.30/tracing_core/field/struct.FieldSet.html
-[`Value`]: https://docs.rs/tracing-core/0.1.30/tracing_core/field/trait.Value.html
-[`ValueSet`]: https://docs.rs/tracing-core/0.1.30/tracing_core/field/struct.ValueSet.html
-[`Dispatch`]: https://docs.rs/tracing-core/0.1.30/tracing_core/dispatcher/struct.Dispatch.html
+[`span::Id`]: https://docs.rs/tracing-core/0.1.31/tracing_core/span/struct.Id.html
+[`Event`]: https://docs.rs/tracing-core/0.1.31/tracing_core/event/struct.Event.html
+[`Subscriber`]: https://docs.rs/tracing-core/0.1.31/tracing_core/subscriber/trait.Subscriber.html
+[`Metadata`]: https://docs.rs/tracing-core/0.1.31/tracing_core/metadata/struct.Metadata.html
+[`Callsite`]: https://docs.rs/tracing-core/0.1.31/tracing_core/callsite/trait.Callsite.html
+[`Field`]: https://docs.rs/tracing-core/0.1.31/tracing_core/field/struct.Field.html
+[`FieldSet`]: https://docs.rs/tracing-core/0.1.31/tracing_core/field/struct.FieldSet.html
+[`Value`]: https://docs.rs/tracing-core/0.1.31/tracing_core/field/trait.Value.html
+[`ValueSet`]: https://docs.rs/tracing-core/0.1.31/tracing_core/field/struct.ValueSet.html
+[`Dispatch`]: https://docs.rs/tracing-core/0.1.31/tracing_core/dispatcher/struct.Dispatch.html
 
 ## Supported Rust Versions