ca19cd2af1
## Motivation Currently we can't run ```bash cargo test -p tracing-subscriber --no-default-features ``` successfully, because there are a bunch of tests for feature flagged APIs that are always enabled. ## Solution This commit adds feature flags to the modules and/or individual test cases that test feature-flagged APIs. There are still a few doctests that use feature-flagged APIs, and will fail with `--no-default-features`. These are primarily the examples for various `Layer::context` methods that rely on `LookupSpan`, and use the `Registry` type, as it's the only subscriber that *implements* `LookupSpan`. We could consider changing these examples, either by removing the actual use of the layers in them, or by changing them to use a mocked-out version of the registry. However, I think it's nicer to show how the API would be used in real life. Perhaps we should just run ```bash cargo test -p tracing-subscriber --no-default-features--tests --lib ``` to ignore doctests when testing without default features. Signed-off-by: Eliza Weisman <eliza@buoyant.io>
tracing-subscriber
Utilities for implementing and composing tracing subscribers.
Compiler support: requires rustc 1.42+
Supported Rust Versions
Tracing is built against the latest stable release. The minimum supported version is 1.42. 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.