# 0.2.0 (February 4, 2020)

### Breaking Changes

- **fmt**: Renamed `Context` to `FmtContex...

Depends on #564

This commit adds a new section to the `Layer` docs on how `Layer`s and
`Sub...

## Motivation

The `LookupMetadata` trait was essentially a prototype for `LookupSpan`,
and w...

## Motivation

Currently, both the `Registry` type _and_ the `LookupSpan` and
`SpanData` trai...

This should fix the `doc-cfg` attributes not being present in the
docs.rs docs.

Signed-off-b...

Fixed

- **fmt**: Fixed empty `{}` printed after spans with no fields (f079f2d)
- **fmt**: Fi...

This commit replaces uses of `Formatter::pad` with
`Formatter::write_char` wherever a single cha...

Currently, when ANSI color formatting is enabled, `tracing-subscriber`'s
`fmt` module left-pads ...

Previously, when `tracing-subscriber`'s `fmt` module printed span
contexts, curly braces were on...

Currently, the `tracing-subscriber` crate's `fmt` module has two
separate `fmt::Display` impls f...

This updates `tracing-error` to depend on `tracing-subscriber` from
crates.io, rather than via ...

## Motivation

A lot of folks have expressed interest in being able to capture the
current `t...

Signed-off-by: David Barsky <[email protected]>

### Added:

- **env_filter**: Documentation for filtering directives (#554)
- **registry**, *...

Version 0.0.7 of `sharded-slab` contains a bug where, when the `remove`
method is called with th...

This PR is extracted from #368 and introduces additional documentation for
the filter directive...

This fixes two bugs. One where the formatted fields were incorrectly
parameterized over Self in...

Currently, a `Layered` struct's implementations of `Subscriber` and
`Layer` will successfully d...

Fixes a small typo that inverts the intended meaning.

* tracing: implement futures 0.3 Stream trait for Instrumented

By implementing the Stream tra...

# Motivation

The smallvec 0.6 dependency is causing some duplicate dependencies in
quinn. sm...

Closes #440

this should be the last of them

* finish doc_cfg for tracing-tower

* finis...

# 0.2.1 (Jan 15, 2020)

### Added

- API documentation now shows which features are required...

## Motivation

For tracing there's no difference between a `NonZero*` or `Wrapping`
type and ...

I've made some improvements to the CI workflow script.

I've consistently used the `actions-rs...

* tracing: update core version

Signed-off-by: Eliza Weisman <[email protected]>

* tracing: ...

# 0.2.0-alpha.4 (January 11, 2020)

### Fixed

- **registry**: Removed inadvertently committ...

These were added while debugging issue #511. They were never intended to
be committed, but appa...

* subscriber: prepare to release 0.2.0-alpha.3

### Added

- **fmt**: Public `FormattedField...

* Get the last bits of tracing-core

* remove unnecessary doc_cfgs

* add doc_cfg for std fe...

# 0.1.9 (January 10, 2020)

### Added

- API docs now show what feature flags are required t...

* ci: remove `on: pull_request`

It appears that this setting doesn't actually do what I thoug...

Starts on #440.

This branch adds `doc_cfg` attributes to `tracing` and `tracing-core`,
when ...

The docs for `drop_span` incorrectly state that the method is
"soft-deprecated", when it's actu...

This branch updates the `tracing-subscriber` tests for
span closure and removal from the regist...

With this change we replace DefaultGuard's drop implementation with a
version that no longer dr...

This branch fixes a couple of issues which might result in child spans
not correctly triggering...

* Add examples for layers

* Reorganize and shrink examples

* Apply suggestions from code r...

This is a follow up PR for #477 that runs clippy on CI.

* Switch from hecrj/setup-rust-action...

Authored-By: David Barsky <[email protected]>

Authored-By: David Barsky <[email protected]>
Co-Authored-By: Eliza Weisman <[email protected]>

* subscriber: traverse SpanStack on pop

In cases where spans are not popped in FILO (first-in...

* docs: add third-party crates to docs

This branch adds a list of related crates not in this ...

## Motivation

Being able to trace futures in platforms that do not support
stdlib would be n...

## Motivation

I've found multiple compilation error involving non-default features.

## Sol...

These warnings have been removed as of
https://github.com/rust-lang/rust/commit/1465351c3dbabfa...

Intended to allow library authors to access a span's dispatcher for
out-of-band interaction wit...

* subscriber: compilation errors w/ nodefault + ansi

when compiling with -no-default-features...

This fixes the following compilation error:
```
error[E0433]: failed to resolve: use of undecl...

Authored-by: David Barsky <[email protected]>

This PR fixes all reported clippy lints. In most cases I have made the
suggested changes. In a ...

* tracing: prepare to release 0.1.11

Added

- `Span::is_none` method (#475)
- `LevelFilter...

Added

- Updated documentation (#468)

Signed-off-by: Eliza Weisman <[email protected]>

Added

- `Default` impl for `Dispatch` (#411)

Fixed

- Removed duplicate `lazy_static` de...

This branch updates all the README links and badges. In particular, it:

* Changes build statu...

Closes #474

Closes #476

Closes #446

## Motivation

When using the `tracing/log` feature flag to emit log records from
tracing eve...

maybe this will fix staleness issues?

## Motivation

I stumbled upon this issue when trying to get tracing-log working with
env_log...

Co-authored-by: David Barsky <[email protected]>
Co-authored-by: Eliza Weisman <[email protected]>

Signed-off-by: Eliza Weisman <[email protected]>

## Motivation

There is currently no way to detect when a span is "empty" (i.e., it was
creat...

Authored-By: David Barsky <[email protected]>

Authored-By: David Barsky <[email protected]>
Co-Authored-By: Eliza Weisman <[email protected]>

## Motivation

Can't create a filter for a specific level without having to `match` on
a `Lev...

## Motivation

Makes it possible to get a `Level` without having to check which
`LevelFilter`...

Added:

- `LookupSpans` implementation for `Layered` (#448)
- `SpanRef::from_root` to iterate ov...

## Motivation

PR #443 added a `Context::scope` function, as described in issue #427.
In the ...

## Motivation

Current link in [here][1], which should point to the correct
[`metadata`][2]()...

## Motivation

PR #441 increased the minimum supported Rust version, but it only
changed the ...

Currently tracing-subscriber doesn't compile on 32-bit platforms as
discussed here: https://git...

## Motivation

Latest master cannot infer types in the `fmt` function.

## Solution

Tell ...

Follow-up of #439, as suggested here:
https://github.com/tokio-rs/tracing/pull/439#pullrequest...

* futures: futures-03 & std-future is the default

Also upgrades futures-03 to the non-preview...

## Motivation

Currently, `Layer::downcast_raw` constructs a pointer with:
```rust
&self as ...

This fixes the link to the examples in the tracing crate doc.

Currently there are some links that 404 because they contain
a reference to a struct 'struct.La...

## Motivation

What I wanted to achieve: lookup data from a span _outside_ of a
`Layer`/`Sub...

This patch moves the current `FmtContext::visit_spans`
implementation into a new method `layer:...

Signed-off-by: Eliza Weisman <[email protected]>

* Prepare release

* fix build, maybe

## Motivation

This branch fixes several bugs in the `Registry` span close logic, and
adds ne...

This PR removes the deprecated items, notices and aliases in preparation
of releasing tracing-s...

This PR fixes nightly builds by opting to use `tokio = "0.2.0-alpha.6"`
instead of a git depend...

For Registry-backed Layers, this commit introduces a capability where
span deletion is deferred...

`fmt::Layer::on_record` was looking up extensions using
`FormattedFields<Self>>` when it should...

Following the suggested fix on #365:
https://github.com/tokio-rs/tracing/issues/365#issuecommen...

With #420, we introduced FmtContext and made it a required parameter on
FormatEvent's primary m...

This branch introduces:

- A registry build atop of https://github.com/hawkw/sharded-slab. La...

There was a dead link to `Field` in the documentation of [AsField](https://docs.rs/tracing/0.1.1...

These benchmarks were originally written for assessing before/after
performance on a branch tha...

The futures-preview code will remain in place to avoid breaking existing
code; the new futures ...

## Motivation

JSON log lines are not correct JSON, the ending `}` is missing.

## Solution
...

## Motivation

A recent upstream change to `tokio-test` (tokio-rs/tokio#1728) removed
the `Mo...

## Motivation

As outlined in #172, we can improve the use of default dispatch by
implementi...

### Added

- `Instrumented::inner` and `inner_mut` methods that expose access to the
instru...