tracing-attributes 0.1.24

This release of tracing-attributes adds support for passing an optional
level to the err and ret arguments to #[instrument], allowing the level
of the generated return-value event to be overridden. For example,

#[instrument(err(level = "info"))]
fn my_great_function() -> Result<(), &'static str> {
    // ...
}

will emit an INFO-level event if the function returns an Err.

In addition, this release updates the syn dependency to v2.x.x.

Added

• level argument to err and ret to override the level of the generated
  return value event (#2335)
• Improved compiler error message when #[instrument] is added to a const fn
  (#2418)

Changed

• Updated syn dependency to 2.0 (#2516)

Fixed

• Fix clippy::unreachable warnings in #[instrument]-generated code (#2356)
• Removed unused "visit" feature flag from syn dependency (#2530)

Documented

• Documented default level for err (#2433)
• Improved documentation for levels in #[instrument] (#2350)

Thanks to @nitnelave, @jsgf, @Abhicodes-crypto, @LukeMathWalker, @andrewpollack,
@quad, @klensy, @davidpdrsn, and @dbidwell94 for contributign to this release!

tracing-subscriber 0.3.17

This release of tracing-subscriber fixes a build error when using env-filter
with recent versions of the regex crate. It also introduces several minor API
improvements.

Fixed

• env-filter: Add "unicode-case" and "unicode-perl" to the regex
  dependency, fixing a build error with recent versions of regex (#2566)
• A number of minor documentation typos and other fixes (#2384, #2378,
  #2368, #2548)

Added

• filter: Add fmt::Display impl for filter::Targets (#2343)
• fmt: Made with_ansi(false) no longer require the "ansi" feature, so that
  ANSI formatting escapes can be disabled without requiring ANSI-specific
  dependencies (#2532)

Changed

• fmt: Dim targets in the Compact formatter, matching the default
  formatter (#2409)

Thanks to @keepsimple1, @andrewhalle, @LeoniePhiline, @LukeMathWalker,
@howardjohn, @daxpedda, and @dbidwell94 for contributing to this release!

tracing-subscriber 0.3.16

This release of tracing-subscriber fixes a regression introduced in
v0.3.15 where Option::None's Layer implementation would
set the max level hint to OFF. In addition, it adds several new APIs,
including the Filter::event_enabled method for filtering events based on
fields values, and the ability to log internal errors that occur when writing a
log line.

This release also replaces the dependency on the unmaintained [ansi-term]
crate with the [nu-ansi-term] crate, resolving an informational security
advisory (RUSTSEC-2021-0139) for [ansi-term]'s maintainance status. This
increases the minimum supported Rust version (MSRV) to Rust 1.50+, although the
crate should still compile for the previous MSRV of Rust 1.49+ when the ansi
feature is not enabled.

Fixed

• layer: Option::None's Layer impl always setting the max_level_hint
  to LevelFilter::OFF (#2321)
• Compilation with -Z minimal versions (#2246)
• env-filter: Clarify that disabled level warnings are emitted by
  tracing-subscriber (#2285)

Added

• fmt: Log internal errors to stderr if writing a log line fails (#2102)
• fmt: FmtLayer::log_internal_errors and
  FmtSubscriber::log_internal_errors methods for configuring whether internal
  writer errors are printed to stderr (#2102)
• fmt: #[must_use] attributes on builders to warn if a Subscriber is
  configured but not set as the default subscriber (#2239)
• filter: Filter::event_enabled method for filtering an event based on its
  fields (#2245, #2251)
• filter: Targets::default_level accessor ([#2242])

Changed

• ansi: Replaced dependency on unmaintained ansi-term crate with
  nu-ansi-term ((#2287, fixes informational advisory RUSTSEC-2021-0139)
• tracing-core: updated to 0.1.30
• Minimum Supported Rust Version (MSRV) increased to Rust 1.50+ (when the
  ansi) feature flag is enabled (#2287)

Documented

• fmt: Correct inaccuracies in fmt::init documentation (#2224)
• filter: Fix incorrect doc link in filter::Not combinator (#2249)

Thanks to new contributors @cgbur, @DesmondWillowbrook, @RalfJung, and
@poliorcetics, as well as returning contributors @CAD97, @connec, @jswrenn,
@guswynn, and @bryangarza, for contributing to this release!

tracing-core 0.1.30

This release of tracing-core adds a new on_register_dispatch method to the
Subscriber trait to allow the Subscriber to perform initialization after
being registered as a Dispatch, and a WeakDispatch type to allow a
Subscriber to store its own Dispatch without creating reference count
cycles.

Added

• Subscriber::on_register_dispatch method (#2269)
• WeakDispatch type and Dispatch::downgrade() function (#2293)

Thanks to @jswrenn for contributing to this release!

tracing-attributes 0.1.23

This release of tracing-attributes fixes a bug where compiler diagnostic spans
for type errors in #[instrument]ed async fns have the location of the
#[instrument] attribute rather than the location of the actual error, and a
bug where inner attributes in #[instrument]ed functions would cause a compiler
error.

Fixed

• Fix incorrect handling of inner attributes in #[instrument]ed functions (#2307)
• Add fake return to improve spans generated for type errors in async fns (#2270)
• Updated syn dependency to fix compilation with -Z minimal-versions
  (#2246)

Thanks to new contributors @compiler-errors and @e-nomem, as well as @CAD97, for
contributing to this release!

tracing 0.1.37

This release of tracing incorporates changes from tracing-core
v0.1.30 and tracing-attributes v0.1.23,
including the new Subscriber::on_register_dispatch method for performing late
initialization after a Subscriber is registered as a Dispatch, and bugfixes
for the #[instrument] attribute. Additionally, it fixes instances of the
bare_trait_objects lint, which is now a warning on tracing's MSRV and will
become an error in the next edition.

Fixed

• attributes: Incorrect handling of inner attributes in #[instrument]ed
  functions (#2307)
• attributes: Incorrect location of compiler diagnostic spans generated for
  type errors in #[instrument]ed async fns (#2270)
• attributes: Updated syn dependency to fix compilation with -Z minimal-versions (#2246)
• bare_trait_objects warning in valueset! macro expansion (#2308)

Added

• core: Subscriber::on_register_dispatch method (#2269)
• core: WeakDispatch type and Dispatch::downgrade() function (#2293)

Changed

• tracing-core: updated to 0.1.30
• tracing-attributes: updated to 0.1.23

Documented

• Added tracing-web and reqwest-tracing to related crates (#2283,
  #2331)

Thanks to new contributors @compiler-errors, @e-nomem, @WorldSEnder, @Xiami2012,
and @tl-rodrigo-gryzinski, as well as @jswrenn and @CAD97, for contributing to
this release!

tracing-opentelemetry 0.18.0

Breaking Changes

• Upgrade to v0.18.0 of opentelemetry (#2303)
  For list of breaking changes in OpenTelemetry, see the
  v0.18.0 changelog.

Fixed

• on_event respects event's explicit parent (#2296)

Thanks to @wprzytula for contributing to this release!

tracing-core 0.1.29

This release of tracing-core adds PartialEq and Eq implementations for
metadata types, and improves error messages when setting the global default
subscriber fails.

Added

• PartialEq and Eq implementations for Metadata (#2229)
• PartialEq and Eq implementations for FieldSet (#2229)

Fixed

• Fixed unhelpful fmt::Debug output for dispatcher::SetGlobalDefaultError
  (#2250)
• Fixed compilation with -Z minimal-versions (#2246)

Thanks to @jswrenn and @CAD97 for contributing to this release!

tracing 0.1.36

This release adds support for owned values and fat pointers as arguments to the
Span::record method, as well as updating the minimum tracing-core version
and several documentation improvements.

Fixed

• Incorrect docs in dispatcher::set_default (#2220)
• Compilation with -Z minimal-versions (#2246)

Added

• Support for owned values and fat pointers in Span::record (#2212)
• Documentation improvements (#2208, #2163)

Changed

• tracing-core: updated to 0.1.29

Thanks to @fredr, @cgbur, @jyn514, @matklad, and @CAD97 for contributing to this
release!

tracing-subscriber 0.3.15

This release fixes a bug where the reload layer would fail to pass through
max_level_hint to the underlying layer, potentially breaking filtering.

Fixed

• reload: pass through max_level_hint to the inner Layer (#2204)

Thanks to @guswynn for contributing to this release!