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# 0.3.0 (April 21, 2022) This is a breaking release which changes the format in which span fields are output to `journald`. Previously, span field names were prefixed with the depth of the span in the current trace tree. However, these prefixes are unnecessary, as `journald` has built in support for duplicated field names. See PR [#1986] for details on this change. ## Changed - Removed span field prefixes ([#1986]) - Renamed `S{num}_NAME` fields to `SPAN_NAME ([#1986]) ### Fixed - Fixed broken links in documentation ([#2077]) Thanks to @wiktorsikora and @ben0x539 for contributing to this release! [#1986]: https://github.com/tokio-rs/tracing/pull/1986 [#2077]: https://github.com/tokio-rs/tracing/pull/2077
tracing-journald
Support for logging tracing events natively to journald,
preserving structured information.
Overview
tracing is a framework for instrumenting Rust programs to collect
scoped, structured, and async-aware diagnostics. tracing-journald provides a
tracing-subscriber::Layer implementation for logging tracing spans
and events to systemd-journald, on Linux distributions that use
systemd.
Compiler support: requires rustc 1.49+
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 Tracing by you, shall be licensed as MIT, without any additional terms or conditions.