tracing/tracing-subscriber
Eliza Weisman a927607fdf
subscriber: remove deprecated APIs (#1673)
## Motivation

`tracing-subscriber` currently contains some APIs that were deprecated
in the v0.2.x series:
- `fmt::LayerBuilder`, which is now a type alias for `fmt::Layer` (as
  the `Layer` type can expose all the same methods as the builder)
- `registry::SpanRef::parent_id`, which doesn't play nice with per-layer
  filtering,
- `fmt::Layer::inherit_fields`, which no longer does anything as it's
  now the default behavior
- `fmt::Layer::on_event`, which was renamed to `fmt_event`
- the `SpanRef::parents` and `layer::Context::scope` iterators, which
  were replaced by the APIs added in #1431 and #1434

Prior to releasing v0.3, the deprecated APIs should be removed.

## Solution

This branch deletes the deprecated APIs, with the exception of
`SpanRef::parents` and `Context::scope` (which were already removed in
240d11a7ef70c1197f8071d98db74a02bd58fad9).

Signed-off-by: Eliza Weisman <eliza@buoyant.io>
2021-10-22 10:28:18 -07:00
..

Tracing — Structured, application-level diagnostics

tracing-subscriber

Utilities for implementing and composing tracing subscribers.

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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.