bfca5460e1
The change #2954 was released in 0.3.19 (#3162). Notably, it relied on features from tracing-core 0.1.33, however, the version was never bumped. Users of the `tracing` feature of `tracing-subscriber` would have no issue since it pulls in the higher version transitively. The specific feature used was implementing trait method `record_bytes` from the `field::Visit` trait on `JsonVisitor` from the tracing-subscriber json format module. (see linked #2945, or [ `impl field::Visit for JsonVisitor<'_>`](https://github.com/tokio-rs/tracing/blame/master/tracing-subscriber/src/fmt/format/json.rs#L491)) I believe this dependency mismatch requires users to manually select the higher tracing-core version or suffer compilation failure. This probably reflects some failure in how the tests utilize features and intra-workspace dependencies, but, a resolution for that is beyond my current comprehension of the project.
tracing-subscriber
Utilities for implementing and composing tracing subscribers.
[tracing] is a framework for instrumenting Rust programs to collect
scoped, structured, and async-aware diagnostics. The Subscriber trait
represents the functionality necessary to collect this trace data. This
crate contains tools for composing subscribers out of smaller units of
behaviour, and batteries-included implementations of common subscriber
functionality.
tracing-subscriber is intended for use by both Subscriber authors and
application authors using tracing to instrument their applications.
Compiler support: requires rustc 1.63+
Supported Rust Versions
Tracing is built against the latest stable release. The minimum supported version is 1.63. 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 1.69, the minimum supported version will not be increased past 1.66, 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.