Bump tracing-subscriber from 0.2.20 to 0.2.22

[dependabot]

Bumps tracing-subscriber from 0.2.20 to 0.2.22.

Release notes

Sourced from tracing-subscriber's releases.

tracing-subscriber 0.2.21

This release introduces the Filter trait, a new API for per-layer filtering. This allows controlling which spans and events are recorded by various layers individually, rather than globally.

In addition, it adds a new Targets filter, which provides a lighter-weight version of the filtering provided by EnvFilter, as well as other smaller API improvements and fixes.

Deprecated

• registry: SpanRef::parent_id, which cannot properly support per-layer filtering. Use .parent().map(SpanRef::id) instead. (#1523)

Fixed

• layer Context methods that are provided when the Subscriber implements LookupSpan no longer require the "registry" feature flag (#1525)
• layer fmt::Debug implementation for Layered no longer requires the S type parameter to implement Debug (#1528)

Added

• registry: Filter trait, Filtered type, Layer::with_filter method, and other APIs for per-layer filtering (#1523)
• filter: FilterFn and DynFilterFn types that implement global (Layer) and per-layer (Filter) filtering for closures and function pointers (#1523)
• filter: Targets filter, which implements a lighter-weight form of EnvFilter-like filtering (#1550)
• env-filter: Added support for filtering on floating-point values (#1507)
• layer: Layer::on_layer callback, called when layering the Layer onto a Subscriber (#1523)
• layer: Layer implementations for Box<L> and Arc<L> where L: Layer (#1536)
• layer: Layer implementations for Box<dyn Layer> and Arc<dyn Layer> (#1536)
• A number of small documentation fixes and improvements (#1553, #1544, #1539, #1524)

Special thanks to new contributors @​jsgf and @​maxburke for contributing to this release!

Commits

• 00ffaee subscriber: prepare to release 0.2.22 (#1559)
• 2a329ec chore: docs and tests cleanups(#1556)
• 6df3fd1 subscriber: fix filter::ParseError accidentally being renamed (#1558)
• 47f1cd2 subscriber: prepare to release v0.2.21 (#1555)
• c4b0058 core: prepare to release 0.1.20 (#1554)
• cdb7115 subscriber: add more cross-references to documentation (#1553)
• 78036a5 subscriber: add Targets filter, a lighter-weight EnvFilter (#1550)
• 665170d attributes: add skip_all (#1548)
• 0ab63ef log: fix LogTracer not honoring max level filters (#1543)
• a1d1282 subscriber: fix missing doc(cfg(...)) attributes for EnvFilter (#1544)
• Additional commits viewable in compare view

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