chore: prepare tracing 0.1.42 (#3418)

# 0.1.42 (November 26, 2025)

### Important

The [`Span::record_all`] method has been removed from the documented API. It
was always unsuable via the documented API as it requried a `ValueSet` which
has no publically documented constructors. The method remains, but should not
be used outside of `tracing` macros.

### Added

- **attributes**: Support constant expressions as instrument field names ([#3158])
- Add `record_all!` macro for recording multiple values in one call ([#3227])
- **core**: Improve code generation at trace points significantly ([#3398])

### Changed

- `tracing-core`: updated to 0.1.35 ([#3414])
- `tracing-attributes`: updated to 0.1.31 ([#3417])

### Fixed

- Fix "name / parent" variant of `event!` ([#2983])
- Remove 'r#' prefix from raw identifiers in field names ([#3130])
- Fix perf regression when `release_max_level_*` not set ([#3373])
- Use imported instead of fully qualified path ([#3374])
- Make `valueset` macro sanitary ([#3382])

### Documented

- **core**: Add missing `dyn` keyword in `Visit` documentation code sample ([#3387])

[#2983]: https://github.com/tokio-rs/tracing/pull/#2983
[#3130]: https://github.com/tokio-rs/tracing/pull/#3130
[#3158]: https://github.com/tokio-rs/tracing/pull/#3158
[#3227]: https://github.com/tokio-rs/tracing/pull/#3227
[#3373]: https://github.com/tokio-rs/tracing/pull/#3373
[#3374]: https://github.com/tokio-rs/tracing/pull/#3374
[#3382]: https://github.com/tokio-rs/tracing/pull/#3382
[#3387]: https://github.com/tokio-rs/tracing/pull/#3387
[#3398]: https://github.com/tokio-rs/tracing/pull/#3398
[#3414]: https://github.com/tokio-rs/tracing/pull/#3414
[#3417]: https://github.com/tokio-rs/tracing/pull/#3417
[`Span::record_all`]: https://docs.rs/tracing/0.1.41/tracing/struct.Span.html#method.record_all

Author: hds

tracing-attributes/Cargo.toml

@@ -49,7 +49,7 @@ syn = { version = "2.0", default-features = false, features = [
 quote = "1.0.20"
 
 [dev-dependencies]
-tracing = { path = "../tracing", version = "0.1.35" }
+tracing = { path = "../tracing", version = "0.1.42" }
 tracing-mock = { path = "../tracing-mock" }
 tokio-test = "0.4.2"
 tracing-subscriber = { path = "../tracing-subscriber", version = "0.3.0", features = [

tracing-mock/Cargo.toml

@@ -29,7 +29,7 @@ edition = "2018"
 rust-version = "1.65.0"
 
 [dependencies]
-tracing = { path = "../tracing", version = "0.1.41", features = ["std", "attributes"], default-features = false }
+tracing = { path = "../tracing", version = "0.1.42", features = ["std", "attributes"], default-features = false }
 tracing-core = { path = "../tracing-core", version = "0.1.28", default-features = false }
 tracing-subscriber = { path = "../tracing-subscriber", version = "0.3", default-features = false, features = ["registry"], optional = true }
 

tracing-subscriber/Cargo.toml

@@ -44,7 +44,7 @@ regex = []
 tracing-core = { path = "../tracing-core", version = "0.1.35", default-features = false }
 
 # only required by the filter feature
-tracing = { optional = true, path = "../tracing", version = "0.1.41", default-features = false }
+tracing = { optional = true, path = "../tracing", version = "0.1.42", default-features = false }
 matchers = { optional = true, version = "0.2.0" }
 # required to have matchers::BuildError implement std::error::Error
 regex-automata = { optional = true, version = "0.4", default-features = false, features = ["std"] }
@@ -74,7 +74,7 @@ valuable_crate = { package = "valuable", version = "0.1.0", optional = true, def
 valuable-serde = { version = "0.1.0", optional = true, default-features = false }
 
 [dev-dependencies]
-tracing = { path = "../tracing", version = "0.1.41" }
+tracing = { path = "../tracing", version = "0.1.42" }
 tracing-mock = { path = "../tracing-mock", features = ["tracing-subscriber"] }
 log = "0.4.17"
 tracing-log = { path = "../tracing-log", version = "0.2.0" }

tracing/CHANGELOG.md

@@ -1,3 +1,48 @@
+# 0.1.42 (November 26, 2025)
+
+### Important
+
+The [`Span::record_all`] method has been removed from the documented API. It
+was always unsuable via the documented API as it requried a `ValueSet` which
+has no publically documented constructors. The method remains, but should not
+be used outside of `tracing` macros.
+
+### Added
+
+- **attributes**: Support constant expressions as instrument field names ([#3158])
+- Add `record_all!` macro for recording multiple values in one call ([#3227])
+- **core**: Improve code generation at trace points significantly ([#3398])
+
+### Changed
+
+- `tracing-core`: updated to 0.1.35 ([#3414])
+- `tracing-attributes`: updated to 0.1.31 ([#3417])
+
+### Fixed
+
+- Fix "name / parent" variant of `event!` ([#2983])
+- Remove 'r#' prefix from raw identifiers in field names ([#3130])
+- Fix perf regression when `release_max_level_*` not set ([#3373])
+- Use imported instead of fully qualified path ([#3374])
+- Make `valueset` macro sanitary ([#3382])
+
+### Documented
+
+- **core**: Add missing `dyn` keyword in `Visit` documentation code sample ([#3387])
+
+[#2983]: https://github.com/tokio-rs/tracing/pull/#2983
+[#3130]: https://github.com/tokio-rs/tracing/pull/#3130
+[#3158]: https://github.com/tokio-rs/tracing/pull/#3158
+[#3227]: https://github.com/tokio-rs/tracing/pull/#3227
+[#3373]: https://github.com/tokio-rs/tracing/pull/#3373
+[#3374]: https://github.com/tokio-rs/tracing/pull/#3374
+[#3382]: https://github.com/tokio-rs/tracing/pull/#3382
+[#3387]: https://github.com/tokio-rs/tracing/pull/#3387
+[#3398]: https://github.com/tokio-rs/tracing/pull/#3398
+[#3414]: https://github.com/tokio-rs/tracing/pull/#3414
+[#3417]: https://github.com/tokio-rs/tracing/pull/#3417
+[`Span::record_all`]: https://docs.rs/tracing/0.1.41/tracing/struct.Span.html#method.record_all
+
 # 0.1.41 (November 27, 2024)
 
 [ [crates.io][crate-0.1.41] ] | [ [docs.rs][docs-0.1.41] ]

tracing/Cargo.toml

@@ -5,7 +5,7 @@ name = "tracing"
 # - Update doc url in README.md.
 # - Update CHANGELOG.md.
 # - Create "tracing-0.1.x" git tag
-version = "0.1.41"
+version = "0.1.42"
 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
+[crates-url]: https://crates.io/crates/tracing/0.1.42
 [docs-badge]: https://docs.rs/tracing/badge.svg
-[docs-url]: https://docs.rs/tracing
+[docs-url]: https://docs.rs/tracing/0.1.42
 [docs-v0.2.x-badge]: https://img.shields.io/badge/docs-v0.2.x-blue
 [docs-v0.2.x-url]: https://tracing.rs/tracing
 [mit-badge]: https://img.shields.io/badge/license-MIT-blue.svg
@@ -250,7 +250,7 @@ my_future
 is as long as the future's.
 
 The second, and preferred, option is through the
-[`#[instrument]`](https://docs.rs/tracing/0.1.41/tracing/attr.instrument.html)
+[`#[instrument]`](https://docs.rs/tracing/0.1.42/tracing/attr.instrument.html)
 attribute:
 
 ```rust
@@ -297,7 +297,7 @@ span.in_scope(|| {
 // Dropping the span will close it, indicating that it has ended.
 ```
 
-The [`#[instrument]`](https://docs.rs/tracing/0.1.41/tracing/attr.instrument.html) attribute macro
+The [`#[instrument]`](https://docs.rs/tracing/0.1.42/tracing/attr.instrument.html) attribute macro
 can reduce some of this boilerplate:
 
 ```rust