From ef24de24a82fe681581cc130f342363c47c0969a Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 7 Jun 2024 07:48:48 +0200 Subject: Merging upstream version 1.75.0+dfsg1. Signed-off-by: Daniel Baumann --- vendor/tracing/src/field.rs | 6 +- vendor/tracing/src/instrument.rs | 85 +++- vendor/tracing/src/level_filters.rs | 56 ++- vendor/tracing/src/lib.rs | 64 +-- vendor/tracing/src/macros.rs | 941 ++++++++++++++++++++++++++++++------ vendor/tracing/src/span.rs | 8 +- 6 files changed, 947 insertions(+), 213 deletions(-) (limited to 'vendor/tracing/src') diff --git a/vendor/tracing/src/field.rs b/vendor/tracing/src/field.rs index b3f9fbdfc..ea8e373df 100644 --- a/vendor/tracing/src/field.rs +++ b/vendor/tracing/src/field.rs @@ -1,13 +1,13 @@ //! `Span` and `Event` key-value data. //! -//! Spans and events may be annotated with key-value data, referred to as known -//! as _fields_. These fields consist of a mapping from a key (corresponding to +//! Spans and events may be annotated with key-value data, referred to as _fields_. +//! These fields consist of a mapping from a key (corresponding to //! a `&str` but represented internally as an array index) to a [`Value`]. //! //! # `Value`s and `Subscriber`s //! //! `Subscriber`s consume `Value`s as fields attached to [span]s or [`Event`]s. -//! The set of field keys on a given span or is defined on its [`Metadata`]. +//! The set of field keys on a given span or event is defined on its [`Metadata`]. //! When a span is created, it provides [`Attributes`] to the `Subscriber`'s //! [`new_span`] method, containing any fields whose values were provided when //! the span was created; and may call the `Subscriber`'s [`record`] method diff --git a/vendor/tracing/src/instrument.rs b/vendor/tracing/src/instrument.rs index 46e5f579c..87c74016b 100644 --- a/vendor/tracing/src/instrument.rs +++ b/vendor/tracing/src/instrument.rs @@ -1,10 +1,14 @@ -use crate::stdlib::pin::Pin; -use crate::stdlib::task::{Context, Poll}; -use crate::stdlib::{future::Future, marker::Sized}; use crate::{ dispatcher::{self, Dispatch}, span::Span, }; +use core::{ + future::Future, + marker::Sized, + mem::ManuallyDrop, + pin::Pin, + task::{Context, Poll}, +}; use pin_project_lite::pin_project; /// Attaches spans to a [`std::future::Future`]. @@ -18,7 +22,7 @@ pub trait Instrument: Sized { /// `Instrumented` wrapper. /// /// The attached [`Span`] will be [entered] every time the instrumented - /// [`Future`] is polled. + /// [`Future`] is polled or [`Drop`]ped. /// /// # Examples /// @@ -80,14 +84,17 @@ pub trait Instrument: Sized { /// [disabled]: super::Span::is_disabled() /// [`Future`]: std::future::Future fn instrument(self, span: Span) -> Instrumented { - Instrumented { inner: self, span } + Instrumented { + inner: ManuallyDrop::new(self), + span, + } } /// Instruments this type with the [current] [`Span`], returning an /// `Instrumented` wrapper. /// /// The attached [`Span`] will be [entered] every time the instrumented - /// [`Future`] is polled. + /// [`Future`] is polled or [`Drop`]ped. /// /// This can be used to propagate the current span when spawning a new future. /// @@ -252,13 +259,55 @@ pin_project! { /// /// [`Future`]: std::future::Future /// [`Span`]: crate::Span + #[project = InstrumentedProj] + #[project_ref = InstrumentedProjRef] #[derive(Debug, Clone)] #[must_use = "futures do nothing unless you `.await` or poll them"] pub struct Instrumented { + // `ManuallyDrop` is used here to to enter instrument `Drop` by entering + // `Span` and executing `ManuallyDrop::drop`. #[pin] - inner: T, + inner: ManuallyDrop, span: Span, } + + impl PinnedDrop for Instrumented { + fn drop(this: Pin<&mut Self>) { + let this = this.project(); + let _enter = this.span.enter(); + // SAFETY: 1. `Pin::get_unchecked_mut()` is safe, because this isn't + // different from wrapping `T` in `Option` and calling + // `Pin::set(&mut this.inner, None)`, except avoiding + // additional memory overhead. + // 2. `ManuallyDrop::drop()` is safe, because + // `PinnedDrop::drop()` is guaranteed to be called only + // once. + unsafe { ManuallyDrop::drop(this.inner.get_unchecked_mut()) } + } + } +} + +impl<'a, T> InstrumentedProj<'a, T> { + /// Get a mutable reference to the [`Span`] a pinned mutable reference to + /// the wrapped type. + fn span_and_inner_pin_mut(self) -> (&'a mut Span, Pin<&'a mut T>) { + // SAFETY: As long as `ManuallyDrop` does not move, `T` won't move + // and `inner` is valid, because `ManuallyDrop::drop` is called + // only inside `Drop` of the `Instrumented`. + let inner = unsafe { self.inner.map_unchecked_mut(|v| &mut **v) }; + (self.span, inner) + } +} + +impl<'a, T> InstrumentedProjRef<'a, T> { + /// Get a reference to the [`Span`] a pinned reference to the wrapped type. + fn span_and_inner_pin_ref(self) -> (&'a Span, Pin<&'a T>) { + // SAFETY: As long as `ManuallyDrop` does not move, `T` won't move + // and `inner` is valid, because `ManuallyDrop::drop` is called + // only inside `Drop` of the `Instrumented`. + let inner = unsafe { self.inner.map_unchecked(|v| &**v) }; + (self.span, inner) + } } // === impl Instrumented === @@ -267,9 +316,9 @@ impl Future for Instrumented { type Output = T::Output; fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll { - let this = self.project(); - let _enter = this.span.enter(); - this.inner.poll(cx) + let (span, inner) = self.project().span_and_inner_pin_mut(); + let _enter = span.enter(); + inner.poll(cx) } } @@ -298,19 +347,29 @@ impl Instrumented { /// Get a pinned reference to the wrapped type. pub fn inner_pin_ref(self: Pin<&Self>) -> Pin<&T> { - self.project_ref().inner + self.project_ref().span_and_inner_pin_ref().1 } /// Get a pinned mutable reference to the wrapped type. pub fn inner_pin_mut(self: Pin<&mut Self>) -> Pin<&mut T> { - self.project().inner + self.project().span_and_inner_pin_mut().1 } /// Consumes the `Instrumented`, returning the wrapped type. /// /// Note that this drops the span. pub fn into_inner(self) -> T { - self.inner + // To manually destructure `Instrumented` without `Drop`, we + // move it into a ManuallyDrop and use pointers to its fields + let this = ManuallyDrop::new(self); + let span: *const Span = &this.span; + let inner: *const ManuallyDrop = &this.inner; + // SAFETY: Those pointers are valid for reads, because `Drop` didn't + // run, and properly aligned, because `Instrumented` isn't + // `#[repr(packed)]`. + let _span = unsafe { span.read() }; + let inner = unsafe { inner.read() }; + ManuallyDrop::into_inner(inner) } } diff --git a/vendor/tracing/src/level_filters.rs b/vendor/tracing/src/level_filters.rs index 44f5e5f57..4e56ada2c 100644 --- a/vendor/tracing/src/level_filters.rs +++ b/vendor/tracing/src/level_filters.rs @@ -62,33 +62,37 @@ pub use tracing_core::{metadata::ParseLevelFilterError, LevelFilter}; /// `Span` constructors should compare the level against this value to /// determine if those spans or events are enabled. /// -/// [module-level documentation]: super#compile-time-filters -pub const STATIC_MAX_LEVEL: LevelFilter = MAX_LEVEL; +/// [module-level documentation]: self#compile-time-filters +pub const STATIC_MAX_LEVEL: LevelFilter = get_max_level_inner(); -cfg_if::cfg_if! { - if #[cfg(all(not(debug_assertions), feature = "release_max_level_off"))] { - const MAX_LEVEL: LevelFilter = LevelFilter::OFF; - } else if #[cfg(all(not(debug_assertions), feature = "release_max_level_error"))] { - const MAX_LEVEL: LevelFilter = LevelFilter::ERROR; - } else if #[cfg(all(not(debug_assertions), feature = "release_max_level_warn"))] { - const MAX_LEVEL: LevelFilter = LevelFilter::WARN; - } else if #[cfg(all(not(debug_assertions), feature = "release_max_level_info"))] { - const MAX_LEVEL: LevelFilter = LevelFilter::INFO; - } else if #[cfg(all(not(debug_assertions), feature = "release_max_level_debug"))] { - const MAX_LEVEL: LevelFilter = LevelFilter::DEBUG; - } else if #[cfg(all(not(debug_assertions), feature = "release_max_level_trace"))] { - const MAX_LEVEL: LevelFilter = LevelFilter::TRACE; - } else if #[cfg(feature = "max_level_off")] { - const MAX_LEVEL: LevelFilter = LevelFilter::OFF; - } else if #[cfg(feature = "max_level_error")] { - const MAX_LEVEL: LevelFilter = LevelFilter::ERROR; - } else if #[cfg(feature = "max_level_warn")] { - const MAX_LEVEL: LevelFilter = LevelFilter::WARN; - } else if #[cfg(feature = "max_level_info")] { - const MAX_LEVEL: LevelFilter = LevelFilter::INFO; - } else if #[cfg(feature = "max_level_debug")] { - const MAX_LEVEL: LevelFilter = LevelFilter::DEBUG; +const fn get_max_level_inner() -> LevelFilter { + if cfg!(not(debug_assertions)) { + if cfg!(feature = "release_max_level_off") { + LevelFilter::OFF + } else if cfg!(feature = "release_max_level_error") { + LevelFilter::ERROR + } else if cfg!(feature = "release_max_level_warn") { + LevelFilter::WARN + } else if cfg!(feature = "release_max_level_info") { + LevelFilter::INFO + } else if cfg!(feature = "release_max_level_debug") { + LevelFilter::DEBUG + } else { + // Same as branch cfg!(feature = "release_max_level_trace") + LevelFilter::TRACE + } + } else if cfg!(feature = "max_level_off") { + LevelFilter::OFF + } else if cfg!(feature = "max_level_error") { + LevelFilter::ERROR + } else if cfg!(feature = "max_level_warn") { + LevelFilter::WARN + } else if cfg!(feature = "max_level_info") { + LevelFilter::INFO + } else if cfg!(feature = "max_level_debug") { + LevelFilter::DEBUG } else { - const MAX_LEVEL: LevelFilter = LevelFilter::TRACE; + // Same as branch cfg!(feature = "max_level_trace") + LevelFilter::TRACE } } diff --git a/vendor/tracing/src/lib.rs b/vendor/tracing/src/lib.rs index 342e04a82..258cbe590 100644 --- a/vendor/tracing/src/lib.rs +++ b/vendor/tracing/src/lib.rs @@ -19,7 +19,7 @@ //! The `tracing` crate provides the APIs necessary for instrumenting libraries //! and applications to emit trace data. //! -//! *Compiler support: [requires `rustc` 1.49+][msrv]* +//! *Compiler support: [requires `rustc` 1.56+][msrv]* //! //! [msrv]: #supported-rust-versions //! # Core Concepts @@ -192,7 +192,7 @@ //! //! You can find more examples showing how to use this crate [here][examples]. //! -//! [RAII]: https://github.com/rust-unofficial/patterns/blob/master/patterns/behavioural/RAII.md +//! [RAII]: https://github.com/rust-unofficial/patterns/blob/main/src/patterns/behavioural/RAII.md //! [examples]: https://github.com/tokio-rs/tracing/tree/master/examples //! //! ### Events @@ -214,7 +214,7 @@ //! ### Configuring Attributes //! //! Both macros require a [`Level`] specifying the verbosity of the span or -//! event. Optionally, the [target] and [parent span] may be overridden. If the +//! event. Optionally, the, [target] and [parent span] may be overridden. If the //! target and parent span are not overridden, they will default to the //! module path where the macro was invoked and the current span (as determined //! by the subscriber), respectively. @@ -237,7 +237,16 @@ //! ``` //! //! The span macros also take a string literal after the level, to set the name -//! of the span. +//! of the span (as above). In the case of the event macros, the name of the event can +//! be overridden (the default is `event file:line`) using the `name:` specifier. +//! +//! ``` +//! # use tracing::{span, event, Level}; +//! # fn main() { +//! span!(Level::TRACE, "my span"); +//! event!(name: "some_info", Level::INFO, "something has happened!"); +//! # } +//! ``` //! //! ### Recording Fields //! @@ -310,6 +319,19 @@ //! # } //!``` //! +//! Constant expressions can also be used as field names. Constants +//! must be enclosed in curly braces (`{}`) to indicate that the *value* +//! of the constant is to be used as the field name, rather than the +//! constant's name. For example: +//! ``` +//! # use tracing::{span, Level}; +//! # fn main() { +//! const RESOURCE_NAME: &str = "foo"; +//! // this span will have the field `foo = "some_id"` +//! span!(Level::TRACE, "get", { RESOURCE_NAME } = "some_id"); +//! # } +//!``` +//! //! The `?` sigil is shorthand that specifies a field should be recorded using //! its [`fmt::Debug`] implementation: //! ``` @@ -386,22 +408,6 @@ //! span.record("parting", &"goodbye world!"); //! ``` //! -//! Note that a span may have up to 32 fields. The following will not compile: -//! -//! ```rust,compile_fail -//! # use tracing::Level; -//! # fn main() { -//! let bad_span = span!( -//! Level::TRACE, -//! "too many fields!", -//! a = 1, b = 2, c = 3, d = 4, e = 5, f = 6, g = 7, h = 8, i = 9, -//! j = 10, k = 11, l = 12, m = 13, n = 14, o = 15, p = 16, q = 17, -//! r = 18, s = 19, t = 20, u = 21, v = 22, w = 23, x = 24, y = 25, -//! z = 26, aa = 27, bb = 28, cc = 29, dd = 30, ee = 31, ff = 32, gg = 33 -//! ); -//! # } -//! ``` -//! //! Finally, events may also include human-readable messages, in the form of a //! [format string][fmt] and (optional) arguments, **after** the event's //! key-value fields. If a format string and arguments are provided, @@ -719,6 +725,7 @@ //! - [`tracing-actix-web`] provides `tracing` integration for the `actix-web` web framework. //! - [`tracing-actix`] provides `tracing` integration for the `actix` actor //! framework. +//! - [`axum-insights`] provides `tracing` integration and Application insights export for the `axum` web framework. //! - [`tracing-gelf`] implements a subscriber for exporting traces in Greylog //! GELF format. //! - [`tracing-coz`] provides integration with the [coz] causal profiler @@ -747,6 +754,8 @@ //! - [`tracing-loki`] provides a layer for shipping logs to [Grafana Loki]. //! - [`tracing-logfmt`] provides a layer that formats events and spans into the logfmt format. //! - [`reqwest-tracing`] provides a middleware to trace [`reqwest`] HTTP requests. +//! - [`tracing-cloudwatch`] provides a layer that sends events to AWS CloudWatch Logs. +//! - [`clippy-tracing`] provides a tool to add, remove and check for `tracing::instrument`. //! //! If you're the maintainer of a `tracing` ecosystem crate not listed above, //! please let us know! We'd love to add your project to the list! @@ -758,6 +767,7 @@ //! [honeycomb.io]: https://www.honeycomb.io/ //! [`tracing-actix-web`]: https://crates.io/crates/tracing-actix-web //! [`tracing-actix`]: https://crates.io/crates/tracing-actix +//! [`axum-insights`]: https://crates.io/crates/axum-insights //! [`tracing-gelf`]: https://crates.io/crates/tracing-gelf //! [`tracing-coz`]: https://crates.io/crates/tracing-coz //! [coz]: https://github.com/plasma-umass/coz @@ -776,7 +786,7 @@ //! [Tracy]: https://github.com/wolfpld/tracy //! [`tracing-elastic-apm`]: https://crates.io/crates/tracing-elastic-apm //! [Elastic APM]: https://www.elastic.co/apm -//! [`tracing-etw`]: https://github.com/microsoft/tracing-etw +//! [`tracing-etw`]: https://github.com/microsoft/rust_win_etw/tree/main/win_etw_tracing //! [ETW]: https://docs.microsoft.com/en-us/windows/win32/etw/about-event-tracing //! [`tracing-fluent-assertions`]: https://crates.io/crates/tracing-fluent-assertions //! [`sentry-tracing`]: https://crates.io/crates/sentry-tracing @@ -787,6 +797,8 @@ //! [`tracing-logfmt`]: https://crates.io/crates/tracing-logfmt //! [`reqwest-tracing`]: https://crates.io/crates/reqwest-tracing //! [`reqwest`]: https://crates.io/crates/reqwest +//! [`tracing-cloudwatch`]: https://crates.io/crates/tracing-cloudwatch +//! [`clippy-tracing`]: https://crates.io/crates/clippy-tracing //! //! 
 //!     Note: Some of these ecosystem crates are currently
@@ -817,7 +829,7 @@
 //!
 //!   ```toml
 //!   [dependencies]
-//!   tracing = { version = "0.1.37", default-features = false }
+//!   tracing = { version = "0.1.38", default-features = false }
 //!   ```
 //!
 //! 
@@ -859,14 +871,14 @@
 //! ## Supported Rust Versions
 //!
 //! Tracing is built against the latest stable release. The minimum supported
-//! version is 1.49. The current Tracing version is not guaranteed to build on
+//! version is 1.56. 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
+//! stable compiler version is 1.69, the minimum supported version will not be
+//! increased past 1.66, 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.
 //!
@@ -900,7 +912,6 @@
 //! [flags]: #crate-feature-flags
 #![cfg_attr(not(feature = "std"), no_std)]
 #![cfg_attr(docsrs, feature(doc_cfg), deny(rustdoc::broken_intra_doc_links))]
-#![doc(html_root_url = "https://docs.rs/tracing/0.1.37")]
 #![doc(
     html_logo_url = "https://raw.githubusercontent.com/tokio-rs/tracing/master/assets/logo-type.png",
     issue_tracker_base_url = "https://github.com/tokio-rs/tracing/issues/"
@@ -911,7 +922,6 @@
     rust_2018_idioms,
     unreachable_pub,
     bad_style,
-    const_err,
     dead_code,
     improper_ctypes,
     non_shorthand_field_patterns,
diff --git a/vendor/tracing/src/macros.rs b/vendor/tracing/src/macros.rs
index f3968e5c1..dba49d169 100644
--- a/vendor/tracing/src/macros.rs
+++ b/vendor/tracing/src/macros.rs
@@ -24,7 +24,7 @@ macro_rules! span {
     (target: $target:expr, parent: $parent:expr, $lvl:expr, $name:expr, $($fields:tt)*) => {
         {
             use $crate::__macro_support::Callsite as _;
-            static CALLSITE: $crate::callsite::DefaultCallsite = $crate::callsite2! {
+            static __CALLSITE: $crate::__macro_support::MacroCallsite = $crate::callsite2! {
                 name: $name,
                 kind: $crate::metadata::Kind::SPAN,
                 target: $target,
@@ -33,10 +33,10 @@ macro_rules! span {
             };
             let mut interest = $crate::subscriber::Interest::never();
             if $crate::level_enabled!($lvl)
-                && { interest = CALLSITE.interest(); !interest.is_never() }
-                && $crate::__macro_support::__is_enabled(CALLSITE.metadata(), interest)
+                && { interest = __CALLSITE.interest(); !interest.is_never() }
+                && $crate::__macro_support::__is_enabled(__CALLSITE.metadata(), interest)
             {
-                let meta = CALLSITE.metadata();
+                let meta = __CALLSITE.metadata();
                 // span with explicit parent
                 $crate::Span::child_of(
                     $parent,
@@ -44,9 +44,9 @@ macro_rules! span {
                     &$crate::valueset!(meta.fields(), $($fields)*),
                 )
             } else {
-                let span = $crate::__macro_support::__disabled_span(CALLSITE.metadata());
+                let span = $crate::__macro_support::__disabled_span(__CALLSITE.metadata());
                 $crate::if_log_enabled! { $lvl, {
-                    span.record_all(&$crate::valueset!(CALLSITE.metadata().fields(), $($fields)*));
+                    span.record_all(&$crate::valueset!(__CALLSITE.metadata().fields(), $($fields)*));
                 }};
                 span
             }
@@ -55,7 +55,7 @@ macro_rules! span {
     (target: $target:expr, $lvl:expr, $name:expr, $($fields:tt)*) => {
         {
             use $crate::__macro_support::Callsite as _;
-            static CALLSITE: $crate::callsite::DefaultCallsite = $crate::callsite2! {
+            static __CALLSITE: $crate::callsite::DefaultCallsite = $crate::callsite2! {
                 name: $name,
                 kind: $crate::metadata::Kind::SPAN,
                 target: $target,
@@ -64,19 +64,19 @@ macro_rules! span {
             };
             let mut interest = $crate::subscriber::Interest::never();
             if $crate::level_enabled!($lvl)
-                && { interest = CALLSITE.interest(); !interest.is_never() }
-                && $crate::__macro_support::__is_enabled(CALLSITE.metadata(), interest)
+                && { interest = __CALLSITE.interest(); !interest.is_never() }
+                && $crate::__macro_support::__is_enabled(__CALLSITE.metadata(), interest)
             {
-                let meta = CALLSITE.metadata();
+                let meta = __CALLSITE.metadata();
                 // span with contextual parent
                 $crate::Span::new(
                     meta,
                     &$crate::valueset!(meta.fields(), $($fields)*),
                 )
             } else {
-                let span = $crate::__macro_support::__disabled_span(CALLSITE.metadata());
+                let span = $crate::__macro_support::__disabled_span(__CALLSITE.metadata());
                 $crate::if_log_enabled! { $lvl, {
-                    span.record_all(&$crate::valueset!(CALLSITE.metadata().fields(), $($fields)*));
+                    span.record_all(&$crate::valueset!(__CALLSITE.metadata().fields(), $($fields)*));
                 }};
                 span
             }
@@ -564,6 +564,7 @@ macro_rules! error_span {
 ///     "App warning: {}",
 ///     error
 /// );
+/// event!(name: "answer", Level::INFO, the_answer = data.0);
 /// event!(Level::INFO, the_answer = data.0);
 /// # }
 /// ```
@@ -582,9 +583,115 @@ macro_rules! error_span {
 // /// ```
 #[macro_export]
 macro_rules! event {
+    // Name / target / parent.
+    (name: $name:expr, target: $target:expr, parent: $parent:expr, $lvl:expr, { $($fields:tt)* } )=> ({
+        use $crate::__macro_support::Callsite as _;
+        static __CALLSITE: $crate::__macro_support::MacroCallsite = $crate::callsite2! {
+            name: $name,
+            kind: $crate::metadata::Kind::EVENT,
+            target: $target,
+            level: $lvl,
+            fields: $($fields)*
+        };
+
+        let enabled = $crate::level_enabled!($lvl) && {
+            let interest = __CALLSITE.interest();
+            !interest.is_never() && $crate::__macro_support::__is_enabled(__CALLSITE.metadata(), interest)
+        };
+        if enabled {
+            (|value_set: $crate::field::ValueSet| {
+                $crate::__tracing_log!(
+                    $lvl,
+                    __CALLSITE,
+                    &value_set
+                );
+                let meta = __CALLSITE.metadata();
+                // event with explicit parent
+                $crate::Event::child_of(
+                    $parent,
+                    meta,
+                    &value_set
+                );
+            })($crate::valueset!(__CALLSITE.metadata().fields(), $($fields)*));
+        } else {
+            $crate::__tracing_log!(
+                $lvl,
+                __CALLSITE,
+                &$crate::valueset!(__CALLSITE.metadata().fields(), $($fields)*)
+            );
+        }
+    });
+    (name: $name:expr, target: $target:expr, parent: $parent:expr, $lvl:expr, { $($fields:tt)* }, $($arg:tt)+ ) => (
+        $crate::event!(
+            name: $name,
+            target: $target,
+            parent: $parent,
+            $lvl,
+            { message = ::core::format_args!($($arg)+), $($fields)* }
+        )
+    );
+    (name: $name:expr, target: $target:expr, parent: $parent:expr, $lvl:expr, $($k:ident).+ = $($fields:tt)* ) => (
+        $crate::event!(name: $name, target: $target, parent: $parent, $lvl, { $($k).+ = $($fields)* })
+    );
+    (name: $name:expr, target: $target:expr, parent: $parent:expr, $lvl:expr, $($arg:tt)+) => (
+        $crate::event!(name: $name, target: $target, parent: $parent, $lvl, { $($arg)+ })
+    );
+
+    // Name / target.
+    (name: $name:expr, target: $target:expr, $lvl:expr, { $($fields:tt)* } )=> ({
+        use $crate::__macro_support::Callsite as _;
+        static __CALLSITE: $crate::__macro_support::MacroCallsite = $crate::callsite2! {
+            name: $name,
+            kind: $crate::metadata::Kind::EVENT,
+            target: $target,
+            level: $lvl,
+            fields: $($fields)*
+        };
+        let enabled = $crate::level_enabled!($lvl) && {
+            let interest = __CALLSITE.interest();
+            !interest.is_never() && $crate::__macro_support::__is_enabled(__CALLSITE.metadata(), interest)
+        };
+        if enabled {
+            (|value_set: $crate::field::ValueSet| {
+                let meta = __CALLSITE.metadata();
+                // event with contextual parent
+                $crate::Event::dispatch(
+                    meta,
+                    &value_set
+                );
+                $crate::__tracing_log!(
+                    $lvl,
+                    __CALLSITE,
+                    &value_set
+                );
+            })($crate::valueset!(__CALLSITE.metadata().fields(), $($fields)*));
+        } else {
+            $crate::__tracing_log!(
+                $lvl,
+                __CALLSITE,
+                &$crate::valueset!(__CALLSITE.metadata().fields(), $($fields)*)
+            );
+        }
+    });
+    (name: $name:expr, target: $target:expr, $lvl:expr, { $($fields:tt)* }, $($arg:tt)+ ) => (
+        $crate::event!(
+            name: $name,
+            target: $target,
+            $lvl,
+            { message = ::core::format_args!($($arg)+), $($fields)* }
+        )
+    );
+    (name: $name:expr, target: $target:expr, $lvl:expr, $($k:ident).+ = $($fields:tt)* ) => (
+        $crate::event!(name: $name, target: $target, $lvl, { $($k).+ = $($fields)* })
+    );
+    (name: $name:expr, target: $target:expr, $lvl:expr, $($arg:tt)+) => (
+        $crate::event!(name: $name, target: $target, $lvl, { $($arg)+ })
+    );
+
+    // Target / parent.
     (target: $target:expr, parent: $parent:expr, $lvl:expr, { $($fields:tt)* } )=> ({
         use $crate::__macro_support::Callsite as _;
-        static CALLSITE: $crate::callsite::DefaultCallsite = $crate::callsite2! {
+        static __CALLSITE: $crate::callsite::DefaultCallsite = $crate::callsite2! {
             name: $crate::__macro_support::concat!(
                 "event ",
                 file!(),
@@ -598,39 +705,38 @@ macro_rules! event {
         };
 
         let enabled = $crate::level_enabled!($lvl) && {
-            let interest = CALLSITE.interest();
-            !interest.is_never() && $crate::__macro_support::__is_enabled(CALLSITE.metadata(), interest)
+            let interest = __CALLSITE.interest();
+            !interest.is_never() && $crate::__macro_support::__is_enabled(__CALLSITE.metadata(), interest)
         };
         if enabled {
             (|value_set: $crate::field::ValueSet| {
                 $crate::__tracing_log!(
                     $lvl,
-                    CALLSITE,
+                    __CALLSITE,
                     &value_set
                 );
-                let meta = CALLSITE.metadata();
+                let meta = __CALLSITE.metadata();
                 // event with explicit parent
                 $crate::Event::child_of(
                     $parent,
                     meta,
                     &value_set
                 );
-            })($crate::valueset!(CALLSITE.metadata().fields(), $($fields)*));
+            })($crate::valueset!(__CALLSITE.metadata().fields(), $($fields)*));
         } else {
             $crate::__tracing_log!(
                 $lvl,
-                CALLSITE,
-                &$crate::valueset!(CALLSITE.metadata().fields(), $($fields)*)
+                __CALLSITE,
+                &$crate::valueset!(__CALLSITE.metadata().fields(), $($fields)*)
             );
         }
     });
-
     (target: $target:expr, parent: $parent:expr, $lvl:expr, { $($fields:tt)* }, $($arg:tt)+ ) => (
         $crate::event!(
             target: $target,
             parent: $parent,
             $lvl,
-            { message = format_args!($($arg)+), $($fields)* }
+            { message = ::core::format_args!($($arg)+), $($fields)* }
         )
     );
     (target: $target:expr, parent: $parent:expr, $lvl:expr, $($k:ident).+ = $($fields:tt)* ) => (
@@ -639,9 +745,114 @@ macro_rules! event {
     (target: $target:expr, parent: $parent:expr, $lvl:expr, $($arg:tt)+) => (
         $crate::event!(target: $target, parent: $parent, $lvl, { $($arg)+ })
     );
+
+    // Name / parent.
+    (name: $name:expr, parent: $parent:expr, $lvl:expr, { $($fields:tt)* } )=> ({
+        use $crate::__macro_support::Callsite as _;
+        static __CALLSITE: $crate::__macro_support::MacroCallsite = $crate::callsite2! {
+            name: $name,
+            kind: $crate::metadata::Kind::EVENT,
+            target: module_path!(),
+            level: $lvl,
+            fields: $($fields)*
+        };
+
+        let enabled = $crate::level_enabled!($lvl) && {
+            let interest = __CALLSITE.interest();
+            !interest.is_never() && __CALLSITE.is_enabled(interest)
+        };
+        if enabled {
+            (|value_set: $crate::field::ValueSet| {
+                $crate::__tracing_log!(
+                    $lvl,
+                    __CALLSITE,
+                    &value_set
+                );
+                let meta = __CALLSITE.metadata();
+                // event with explicit parent
+                $crate::Event::child_of(
+                    $parent,
+                    meta,
+                    &value_set
+                );
+            })($crate::valueset!(__CALLSITE.metadata().fields(), $($fields)*));
+        } else {
+            $crate::__tracing_log!(
+                $lvl,
+                __CALLSITE,
+                &$crate::valueset!(__CALLSITE.metadata().fields(), $($fields)*)
+            );
+        }
+    });
+    (name: $name:expr, parent: $parent:expr, $lvl:expr, { $($fields:tt)* }, $($arg:tt)+ ) => (
+        $crate::event!(
+            name: $name,
+            parent: $parent,
+            $lvl,
+            { message = ::core::format_args!($($arg)+), $($fields)* }
+        )
+    );
+    (name: $name:expr, parent: $parent:expr, $lvl:expr, $($k:ident).+ = $($fields:tt)* ) => (
+        $crate::event!(name: $name, parent: $parent, $lvl, { $($k).+ = $($fields)* })
+    );
+    (name: $name:expr, parent: $parent:expr, $lvl:expr, $($arg:tt)+) => (
+        $crate::event!(name: $name, parent: $parent, $lvl, { $($arg)+ })
+    );
+
+    // Name.
+    (name: $name:expr, $lvl:expr, { $($fields:tt)* } )=> ({
+        use $crate::__macro_support::Callsite as _;
+        static __CALLSITE: $crate::__macro_support::MacroCallsite = $crate::callsite2! {
+            name: $name,
+            kind: $crate::metadata::Kind::EVENT,
+            target: module_path!(),
+            level: $lvl,
+            fields: $($fields)*
+        };
+        let enabled = $crate::level_enabled!($lvl) && {
+            let interest = __CALLSITE.interest();
+            !interest.is_never() && $crate::__macro_support::__is_enabled(__CALLSITE.metadata(), interest)
+        };
+        if enabled {
+            (|value_set: $crate::field::ValueSet| {
+                let meta = __CALLSITE.metadata();
+                // event with contextual parent
+                $crate::Event::dispatch(
+                    meta,
+                    &value_set
+                );
+                $crate::__tracing_log!(
+                    $lvl,
+                    __CALLSITE,
+                    &value_set
+                );
+            })($crate::valueset!(__CALLSITE.metadata().fields(), $($fields)*));
+        } else {
+            $crate::__tracing_log!(
+                $lvl,
+                __CALLSITE,
+                &$crate::valueset!(__CALLSITE.metadata().fields(), $($fields)*)
+            );
+        }
+    });
+    (name: $name:expr, $lvl:expr, { $($fields:tt)* }, $($arg:tt)+ ) => (
+        $crate::event!(
+            name: $name,
+            $lvl,
+            { message = ::core::format_args!($($arg)+), $($fields)* }
+        )
+    );
+    (name: $name:expr, $lvl:expr, $($k:ident).+ = $($fields:tt)* ) => (
+        $crate::event!(name: $name, $lvl, { $($k).+ = $($fields)* })
+    );
+    (name: $name:expr, $lvl:expr, $($arg:tt)+ ) => (
+        $crate::event!(name: $name, $lvl, { $($arg)+ })
+    );
+
+    // Target.
     (target: $target:expr, $lvl:expr, { $($fields:tt)* } )=> ({
         use $crate::__macro_support::Callsite as _;
-        static CALLSITE: $crate::callsite::DefaultCallsite = $crate::callsite2! {
+        static __CALLSITE: $crate::callsite::DefaultCallsite = $crate::callsite2! {
             name: $crate::__macro_support::concat!(
                 "event ",
                 file!(),
@@ -654,12 +865,12 @@ macro_rules! event {
             fields: $($fields)*
         };
         let enabled = $crate::level_enabled!($lvl) && {
-            let interest = CALLSITE.interest();
-            !interest.is_never() && $crate::__macro_support::__is_enabled(CALLSITE.metadata(), interest)
+            let interest = __CALLSITE.interest();
+            !interest.is_never() && $crate::__macro_support::__is_enabled(__CALLSITE.metadata(), interest)
         };
         if enabled {
             (|value_set: $crate::field::ValueSet| {
-                let meta = CALLSITE.metadata();
+                let meta = __CALLSITE.metadata();
                 // event with contextual parent
                 $crate::Event::dispatch(
                     meta,
@@ -667,15 +878,15 @@ macro_rules! event {
                 );
                 $crate::__tracing_log!(
                     $lvl,
-                    CALLSITE,
+                    __CALLSITE,
                     &value_set
                 );
-            })($crate::valueset!(CALLSITE.metadata().fields(), $($fields)*));
+            })($crate::valueset!(__CALLSITE.metadata().fields(), $($fields)*));
         } else {
             $crate::__tracing_log!(
                 $lvl,
-                CALLSITE,
-                &$crate::valueset!(CALLSITE.metadata().fields(), $($fields)*)
+                __CALLSITE,
+                &$crate::valueset!(__CALLSITE.metadata().fields(), $($fields)*)
             );
         }
     });
@@ -683,7 +894,7 @@ macro_rules! event {
         $crate::event!(
             target: $target,
             $lvl,
-            { message = format_args!($($arg)+), $($fields)* }
+            { message = ::core::format_args!($($arg)+), $($fields)* }
         )
     );
     (target: $target:expr, $lvl:expr, $($k:ident).+ = $($fields:tt)* ) => (
@@ -692,12 +903,14 @@ macro_rules! event {
     (target: $target:expr, $lvl:expr, $($arg:tt)+ ) => (
         $crate::event!(target: $target, $lvl, { $($arg)+ })
     );
+
+    // Parent.
     (parent: $parent:expr, $lvl:expr, { $($fields:tt)* }, $($arg:tt)+ ) => (
         $crate::event!(
             target: module_path!(),
             parent: $parent,
             $lvl,
-            { message = format_args!($($arg)+), $($fields)* }
+            { message = ::core::format_args!($($arg)+), $($fields)* }
         )
     );
     (parent: $parent:expr, $lvl:expr, $($k:ident).+ = $($field:tt)*) => (
@@ -751,11 +964,13 @@ macro_rules! event {
     (parent: $parent:expr, $lvl:expr, $($arg:tt)+ ) => (
         $crate::event!(target: module_path!(), parent: $parent, $lvl, { $($arg)+ })
     );
+
+    // ...
     ( $lvl:expr, { $($fields:tt)* }, $($arg:tt)+ ) => (
         $crate::event!(
             target: module_path!(),
             $lvl,
-            { message = format_args!($($arg)+), $($fields)* }
+            { message = ::core::format_args!($($arg)+), $($fields)* }
         )
     );
     ( $lvl:expr, { $($fields:tt)* }, $($arg:tt)+ ) => (
@@ -970,7 +1185,7 @@ macro_rules! enabled {
     (kind: $kind:expr, target: $target:expr, $lvl:expr, { $($fields:tt)* } )=> ({
         if $crate::level_enabled!($lvl) {
             use $crate::__macro_support::Callsite as _;
-            static CALLSITE: $crate::callsite::DefaultCallsite = $crate::callsite2! {
+            static __CALLSITE: $crate::callsite::DefaultCallsite = $crate::callsite2! {
                 name: $crate::__macro_support::concat!(
                     "enabled ",
                     file!(),
@@ -982,9 +1197,9 @@ macro_rules! enabled {
                 level: $lvl,
                 fields: $($fields)*
             };
-            let interest = CALLSITE.interest();
-            if !interest.is_never() && $crate::__macro_support::__is_enabled(CALLSITE.metadata(), interest) {
-                let meta = CALLSITE.metadata();
+            let interest = __CALLSITE.interest();
+            if !interest.is_never() && $crate::__macro_support::__is_enabled(__CALLSITE.metadata(), interest) {
+                let meta = __CALLSITE.metadata();
                 $crate::dispatcher::get_default(|current| current.enabled(meta))
             } else {
                 false
@@ -1081,10 +1296,46 @@ macro_rules! enabled {
 ///     if pos.x >= 0.0 { "positive" } else { "negative" },
 ///     if pos.y >= 0.0 { "positive" } else { "negative" }
 /// );
+/// trace!(name: "completed", position = ?pos);
 /// # }
 /// ```
 #[macro_export]
 macro_rules! trace {
+    // Name / target / parent.
+    (name: $name:expr, target: $target:expr, parent: $parent:expr, { $($field:tt)* }, $($arg:tt)* ) => (
+        $crate::event!(name: $name, target: $target, parent: $parent, $crate::Level::TRACE, { $($field)* }, $($arg)*)
+    );
+    (name: $name:expr, target: $target:expr, parent: $parent:expr, $($k:ident).+ $($field:tt)+ ) => (
+        $crate::event!(name: $name, target: $target, parent: $parent, $crate::Level::TRACE, { $($k).+ $($field)+ })
+    );
+    (name: $name:expr, target: $target:expr, parent: $parent:expr, ?$($k:ident).+ $($field:tt)+ ) => (
+        $crate::event!(name: $name, target: $target, parent: $parent, $crate::Level::TRACE, { $($k).+ $($field)+ })
+    );
+    (name: $name:expr, target: $target:expr, parent: $parent:expr, %$($k:ident).+ $($field:tt)+ ) => (
+        $crate::event!(name: $name, target: $target, parent: $parent, $crate::Level::TRACE, { $($k).+ $($field)+ })
+    );
+    (name: $name:expr, target: $target:expr, parent: $parent:expr, $($arg:tt)+ ) => (
+        $crate::event!(name: $name, target: $target, parent: $parent, $crate::Level::TRACE, {}, $($arg)+)
+    );
+
+    // Name / target.
+    (name: $name:expr, target: $target:expr, { $($field:tt)* }, $($arg:tt)* ) => (
+        $crate::event!(name: $name, target: $target, $crate::Level::TRACE, { $($field)* }, $($arg)*)
+    );
+    (name: $name:expr, target: $target:expr, $($k:ident).+ $($field:tt)+ ) => (
+        $crate::event!(name: $name, target: $target, $crate::Level::TRACE, { $($k).+ $($field)+ })
+    );
+    (name: $name:expr, target: $target:expr, ?$($k:ident).+ $($field:tt)+ ) => (
+        $crate::event!(name: $name, target: $target, $crate::Level::TRACE, { $($k).+ $($field)+ })
+    );
+    (name: $name:expr, target: $target:expr, %$($k:ident).+ $($field:tt)+ ) => (
+        $crate::event!(name: $name, target: $target, $crate::Level::TRACE, { $($k).+ $($field)+ })
+    );
+    (name: $name:expr, target: $target:expr, $($arg:tt)+ ) => (
+        $crate::event!(name: $name, target: $target, $crate::Level::TRACE, {}, $($arg)+)
+    );
+
+    // Target / parent.
     (target: $target:expr, parent: $parent:expr, { $($field:tt)* }, $($arg:tt)* ) => (
         $crate::event!(target: $target, parent: $parent, $crate::Level::TRACE, { $($field)* }, $($arg)*)
     );
@@ -1100,6 +1351,59 @@ macro_rules! trace {
     (target: $target:expr, parent: $parent:expr, $($arg:tt)+ ) => (
         $crate::event!(target: $target, parent: $parent, $crate::Level::TRACE, {}, $($arg)+)
     );
+
+    // Name / parent.
+    (name: $name:expr, parent: $parent:expr, { $($field:tt)* }, $($arg:tt)* ) => (
+        $crate::event!(name: $name, parent: $parent, $crate::Level::TRACE, { $($field)* }, $($arg)*)
+    );
+    (name: $name:expr, parent: $parent:expr, $($k:ident).+ $($field:tt)+ ) => (
+        $crate::event!(name: $name, parent: $parent, $crate::Level::TRACE, { $($k).+ $($field)+ })
+    );
+    (name: $name:expr, parent: $parent:expr, ?$($k:ident).+ $($field:tt)+ ) => (
+        $crate::event!(name: $name, parent: $parent, $crate::Level::TRACE, { $($k).+ $($field)+ })
+    );
+    (name: $name:expr, parent: $parent:expr, %$($k:ident).+ $($field:tt)+ ) => (
+        $crate::event!(name: $name, parent: $parent, $crate::Level::TRACE, { $($k).+ $($field)+ })
+    );
+    (name: $name:expr, parent: $parent:expr, $($arg:tt)+ ) => (
+        $crate::event!(name: $name, parent: $parent, $crate::Level::TRACE, {}, $($arg)+)
+    );
+
+    // Name.
+    (name: $name:expr, { $($field:tt)* }, $($arg:tt)* ) => (
+        $crate::event!(name: $name, $crate::Level::TRACE, { $($field)* }, $($arg)*)
+    );
+    (name: $name:expr, $($k:ident).+ $($field:tt)* ) => (
+        $crate::event!(name: $name, $crate::Level::TRACE, { $($k).+ $($field)* })
+    );
+    (name: $name:expr, ?$($k:ident).+ $($field:tt)* ) => (
+        $crate::event!(name: $name, $crate::Level::TRACE, { ?$($k).+ $($field)* })
+    );
+    (name: $name:expr, %$($k:ident).+ $($field:tt)* ) => (
+        $crate::event!(name: $name, $crate::Level::TRACE, { %$($k).+ $($field)* })
+    );
+    (name: $name:expr, $($arg:tt)+ ) => (
+        $crate::event!(name: $name, $crate::Level::TRACE, {}, $($arg)+)
+    );
+
+    // Target.
+    (target: $target:expr, { $($field:tt)* }, $($arg:tt)* ) => (
+        $crate::event!(target: $target, $crate::Level::TRACE, { $($field)* }, $($arg)*)
+    );
+    (target: $target:expr, $($k:ident).+ $($field:tt)* ) => (
+        $crate::event!(target: $target, $crate::Level::TRACE, { $($k).+ $($field)* })
+    );
+    (target: $target:expr, ?$($k:ident).+ $($field:tt)* ) => (
+        $crate::event!(target: $target, $crate::Level::TRACE, { ?$($k).+ $($field)* })
+    );
+    (target: $target:expr, %$($k:ident).+ $($field:tt)* ) => (
+        $crate::event!(target: $target, $crate::Level::TRACE, { %$($k).+ $($field)* })
+    );
+    (target: $target:expr, $($arg:tt)+ ) => (
+        $crate::event!(target: $target, $crate::Level::TRACE, {}, $($arg)+)
+    );
+
+    // Parent.
     (parent: $parent:expr, { $($field:tt)+ }, $($arg:tt)+ ) => (
         $crate::event!(
             target: module_path!(),
@@ -1166,21 +1470,8 @@ macro_rules! trace {
             $($arg)+
         )
     );
-    (target: $target:expr, { $($field:tt)* }, $($arg:tt)* ) => (
-        $crate::event!(target: $target, $crate::Level::TRACE, { $($field)* }, $($arg)*)
-    );
-    (target: $target:expr, $($k:ident).+ $($field:tt)* ) => (
-        $crate::event!(target: $target, $crate::Level::TRACE, { $($k).+ $($field)* })
-    );
-    (target: $target:expr, ?$($k:ident).+ $($field:tt)* ) => (
-        $crate::event!(target: $target, $crate::Level::TRACE, { ?$($k).+ $($field)* })
-    );
-    (target: $target:expr, %$($k:ident).+ $($field:tt)* ) => (
-        $crate::event!(target: $target, $crate::Level::TRACE, { %$($k).+ $($field)* })
-    );
-    (target: $target:expr, $($arg:tt)+ ) => (
-        $crate::event!(target: $target, $crate::Level::TRACE, {}, $($arg)+)
-    );
+
+    // ...
     ({ $($field:tt)+ }, $($arg:tt)+ ) => (
         $crate::event!(
             target: module_path!(),
@@ -1196,6 +1487,20 @@ macro_rules! trace {
             { $($k).+ = $($field)*}
         )
     );
+    (?$($k:ident).+ = $($field:tt)*) => (
+        $crate::event!(
+            target: module_path!(),
+            $crate::Level::TRACE,
+            { ?$($k).+ = $($field)*}
+        )
+    );
+    (%$($k:ident).+ = $($field:tt)*) => (
+        $crate::event!(
+            target: module_path!(),
+            $crate::Level::TRACE,
+            { %$($k).+ = $($field)*}
+        )
+    );
     ($($k:ident).+, $($field:tt)*) => (
         $crate::event!(
             target: module_path!(),
@@ -1268,10 +1573,46 @@ macro_rules! trace {
 ///
 /// debug!(?pos.x, ?pos.y);
 /// debug!(target: "app_events", position = ?pos, "New position");
+/// debug!(name: "completed", position = ?pos);
 /// # }
 /// ```
 #[macro_export]
 macro_rules! debug {
+    // Name / target / parent.
+    (name: $name:expr, target: $target:expr, parent: $parent:expr, { $($field:tt)* }, $($arg:tt)* ) => (
+        $crate::event!(name: $name, target: $target, parent: $parent, $crate::Level::DEBUG, { $($field)* }, $($arg)*)
+    );
+    (name: $name:expr, target: $target:expr, parent: $parent:expr, $($k:ident).+ $($field:tt)+ ) => (
+        $crate::event!(name: $name, target: $target, parent: $parent, $crate::Level::DEBUG, { $($k).+ $($field)+ })
+    );
+    (name: $name:expr, target: $target:expr, parent: $parent:expr, ?$($k:ident).+ $($field:tt)+ ) => (
+        $crate::event!(name: $name, target: $target, parent: $parent, $crate::Level::DEBUG, { $($k).+ $($field)+ })
+    );
+    (name: $name:expr, target: $target:expr, parent: $parent:expr, %$($k:ident).+ $($field:tt)+ ) => (
+        $crate::event!(name: $name, target: $target, parent: $parent, $crate::Level::DEBUG, { $($k).+ $($field)+ })
+    );
+    (name: $name:expr, target: $target:expr, parent: $parent:expr, $($arg:tt)+ ) => (
+        $crate::event!(name: $name, target: $target, parent: $parent, $crate::Level::DEBUG, {}, $($arg)+)
+    );
+
+    // Name / target.
+    (name: $name:expr, target: $target:expr, { $($field:tt)* }, $($arg:tt)* ) => (
+        $crate::event!(name: $name, target: $target, $crate::Level::DEBUG, { $($field)* }, $($arg)*)
+    );
+    (name: $name:expr, target: $target:expr, $($k:ident).+ $($field:tt)+ ) => (
+        $crate::event!(name: $name, target: $target, $crate::Level::DEBUG, { $($k).+ $($field)+ })
+    );
+    (name: $name:expr, target: $target:expr, ?$($k:ident).+ $($field:tt)+ ) => (
+        $crate::event!(name: $name, target: $target, $crate::Level::DEBUG, { $($k).+ $($field)+ })
+    );
+    (name: $name:expr, target: $target:expr, %$($k:ident).+ $($field:tt)+ ) => (
+        $crate::event!(name: $name, target: $target, $crate::Level::DEBUG, { $($k).+ $($field)+ })
+    );
+    (name: $name:expr, target: $target:expr, $($arg:tt)+ ) => (
+        $crate::event!(name: $name, target: $target, $crate::Level::DEBUG, {}, $($arg)+)
+    );
+
+    // Target / parent.
     (target: $target:expr, parent: $parent:expr, { $($field:tt)* }, $($arg:tt)* ) => (
         $crate::event!(target: $target, parent: $parent, $crate::Level::DEBUG, { $($field)* }, $($arg)*)
     );
@@ -1287,6 +1628,59 @@ macro_rules! debug {
     (target: $target:expr, parent: $parent:expr, $($arg:tt)+ ) => (
         $crate::event!(target: $target, parent: $parent, $crate::Level::DEBUG, {}, $($arg)+)
     );
+
+    // Name / parent.
+    (name: $name:expr, parent: $parent:expr, { $($field:tt)* }, $($arg:tt)* ) => (
+        $crate::event!(name: $name, parent: $parent, $crate::Level::DEBUG, { $($field)* }, $($arg)*)
+    );
+    (name: $name:expr, parent: $parent:expr, $($k:ident).+ $($field:tt)+ ) => (
+        $crate::event!(name: $name, parent: $parent, $crate::Level::DEBUG, { $($k).+ $($field)+ })
+    );
+    (name: $name:expr, parent: $parent:expr, ?$($k:ident).+ $($field:tt)+ ) => (
+        $crate::event!(name: $name, parent: $parent, $crate::Level::DEBUG, { $($k).+ $($field)+ })
+    );
+    (name: $name:expr, parent: $parent:expr, %$($k:ident).+ $($field:tt)+ ) => (
+        $crate::event!(name: $name, parent: $parent, $crate::Level::DEBUG, { $($k).+ $($field)+ })
+    );
+    (name: $name:expr, parent: $parent:expr, $($arg:tt)+ ) => (
+        $crate::event!(name: $name, parent: $parent, $crate::Level::DEBUG, {}, $($arg)+)
+    );
+
+    // Name.
+    (name: $name:expr, { $($field:tt)* }, $($arg:tt)* ) => (
+        $crate::event!(name: $name, $crate::Level::DEBUG, { $($field)* }, $($arg)*)
+    );
+    (name: $name:expr, $($k:ident).+ $($field:tt)* ) => (
+        $crate::event!(name: $name, $crate::Level::DEBUG, { $($k).+ $($field)* })
+    );
+    (name: $name:expr, ?$($k:ident).+ $($field:tt)* ) => (
+        $crate::event!(name: $name, $crate::Level::DEBUG, { ?$($k).+ $($field)* })
+    );
+    (name: $name:expr, %$($k:ident).+ $($field:tt)* ) => (
+        $crate::event!(name: $name, $crate::Level::DEBUG, { %$($k).+ $($field)* })
+    );
+    (name: $name:expr, $($arg:tt)+ ) => (
+        $crate::event!(name: $name, $crate::Level::DEBUG, {}, $($arg)+)
+    );
+
+    // Target.
+    (target: $target:expr, { $($field:tt)* }, $($arg:tt)* ) => (
+        $crate::event!(target: $target, $crate::Level::DEBUG, { $($field)* }, $($arg)*)
+    );
+    (target: $target:expr, $($k:ident).+ $($field:tt)* ) => (
+        $crate::event!(target: $target, $crate::Level::DEBUG, { $($k).+ $($field)* })
+    );
+    (target: $target:expr, ?$($k:ident).+ $($field:tt)* ) => (
+        $crate::event!(target: $target, $crate::Level::DEBUG, { ?$($k).+ $($field)* })
+    );
+    (target: $target:expr, %$($k:ident).+ $($field:tt)* ) => (
+        $crate::event!(target: $target, $crate::Level::DEBUG, { %$($k).+ $($field)* })
+    );
+    (target: $target:expr, $($arg:tt)+ ) => (
+        $crate::event!(target: $target, $crate::Level::DEBUG, {}, $($arg)+)
+    );
+
+    // Parent.
     (parent: $parent:expr, { $($field:tt)+ }, $($arg:tt)+ ) => (
         $crate::event!(
             target: module_path!(),
@@ -1353,21 +1747,8 @@ macro_rules! debug {
             $($arg)+
         )
     );
-    (target: $target:expr, { $($field:tt)* }, $($arg:tt)* ) => (
-        $crate::event!(target: $target, $crate::Level::DEBUG, { $($field)* }, $($arg)*)
-    );
-    (target: $target:expr, $($k:ident).+ $($field:tt)* ) => (
-        $crate::event!(target: $target, $crate::Level::DEBUG, { $($k).+ $($field)* })
-    );
-    (target: $target:expr, ?$($k:ident).+ $($field:tt)* ) => (
-        $crate::event!(target: $target, $crate::Level::DEBUG, { ?$($k).+ $($field)* })
-    );
-    (target: $target:expr, %$($k:ident).+ $($field:tt)* ) => (
-        $crate::event!(target: $target, $crate::Level::DEBUG, { %$($k).+ $($field)* })
-    );
-    (target: $target:expr, $($arg:tt)+ ) => (
-        $crate::event!(target: $target, $crate::Level::DEBUG, {}, $($arg)+)
-    );
+
+    // ...
     ({ $($field:tt)+ }, $($arg:tt)+ ) => (
         $crate::event!(
             target: module_path!(),
@@ -1480,11 +1861,47 @@ macro_rules! debug {
 ///     conn.port,
 ///     ?conn.speed,
 /// );
+/// info!(name: "completed", "completed connection to {:?}", addr);
 /// # }
 /// ```
 #[macro_export]
 macro_rules! info {
-     (target: $target:expr, parent: $parent:expr, { $($field:tt)* }, $($arg:tt)* ) => (
+    // Name / target / parent.
+    (name: $name:expr, target: $target:expr, parent: $parent:expr, { $($field:tt)* }, $($arg:tt)* ) => (
+        $crate::event!(name: $name, target: $target, parent: $parent, $crate::Level::INFO, { $($field)* }, $($arg)*)
+    );
+    (name: $name:expr, target: $target:expr, parent: $parent:expr, $($k:ident).+ $($field:tt)+ ) => (
+        $crate::event!(name: $name, target: $target, parent: $parent, $crate::Level::INFO, { $($k).+ $($field)+ })
+    );
+    (name: $name:expr, target: $target:expr, parent: $parent:expr, ?$($k:ident).+ $($field:tt)+ ) => (
+        $crate::event!(name: $name, target: $target, parent: $parent, $crate::Level::INFO, { $($k).+ $($field)+ })
+    );
+    (name: $name:expr, target: $target:expr, parent: $parent:expr, %$($k:ident).+ $($field:tt)+ ) => (
+        $crate::event!(name: $name, target: $target, parent: $parent, $crate::Level::INFO, { $($k).+ $($field)+ })
+    );
+    (name: $name:expr, target: $target:expr, parent: $parent:expr, $($arg:tt)+ ) => (
+        $crate::event!(name: $name, target: $target, parent: $parent, $crate::Level::INFO, {}, $($arg)+)
+    );
+
+    // Name / target.
+    (name: $name:expr, target: $target:expr, { $($field:tt)* }, $($arg:tt)* ) => (
+        $crate::event!(name: $name, target: $target, $crate::Level::INFO, { $($field)* }, $($arg)*)
+    );
+    (name: $name:expr, target: $target:expr, $($k:ident).+ $($field:tt)+ ) => (
+        $crate::event!(name: $name, target: $target, $crate::Level::INFO, { $($k).+ $($field)+ })
+    );
+    (name: $name:expr, target: $target:expr, ?$($k:ident).+ $($field:tt)+ ) => (
+        $crate::event!(name: $name, target: $target, $crate::Level::INFO, { $($k).+ $($field)+ })
+    );
+    (name: $name:expr, target: $target:expr, %$($k:ident).+ $($field:tt)+ ) => (
+        $crate::event!(name: $name, target: $target, $crate::Level::INFO, { $($k).+ $($field)+ })
+    );
+    (name: $name:expr, target: $target:expr, $($arg:tt)+ ) => (
+        $crate::event!(name: $name, target: $target, $crate::Level::INFO, {}, $($arg)+)
+    );
+
+    // Target / parent.
+    (target: $target:expr, parent: $parent:expr, { $($field:tt)* }, $($arg:tt)* ) => (
         $crate::event!(target: $target, parent: $parent, $crate::Level::INFO, { $($field)* }, $($arg)*)
     );
     (target: $target:expr, parent: $parent:expr, $($k:ident).+ $($field:tt)+ ) => (
@@ -1499,6 +1916,59 @@ macro_rules! info {
     (target: $target:expr, parent: $parent:expr, $($arg:tt)+ ) => (
         $crate::event!(target: $target, parent: $parent, $crate::Level::INFO, {}, $($arg)+)
     );
+
+    // Name / parent.
+    (name: $name:expr, parent: $parent:expr, { $($field:tt)* }, $($arg:tt)* ) => (
+        $crate::event!(name: $name, parent: $parent, $crate::Level::INFO, { $($field)* }, $($arg)*)
+    );
+    (name: $name:expr, parent: $parent:expr, $($k:ident).+ $($field:tt)+ ) => (
+        $crate::event!(name: $name, parent: $parent, $crate::Level::INFO, { $($k).+ $($field)+ })
+    );
+    (name: $name:expr, parent: $parent:expr, ?$($k:ident).+ $($field:tt)+ ) => (
+        $crate::event!(name: $name, parent: $parent, $crate::Level::INFO, { $($k).+ $($field)+ })
+    );
+    (name: $name:expr, parent: $parent:expr, %$($k:ident).+ $($field:tt)+ ) => (
+        $crate::event!(name: $name, parent: $parent, $crate::Level::INFO, { $($k).+ $($field)+ })
+    );
+    (name: $name:expr, parent: $parent:expr, $($arg:tt)+ ) => (
+        $crate::event!(name: $name, parent: $parent, $crate::Level::INFO, {}, $($arg)+)
+    );
+
+    // Name.
+    (name: $name:expr, { $($field:tt)* }, $($arg:tt)* ) => (
+        $crate::event!(name: $name, $crate::Level::INFO, { $($field)* }, $($arg)*)
+    );
+    (name: $name:expr, $($k:ident).+ $($field:tt)* ) => (
+        $crate::event!(name: $name, $crate::Level::INFO, { $($k).+ $($field)* })
+    );
+    (name: $name:expr, ?$($k:ident).+ $($field:tt)* ) => (
+        $crate::event!(name: $name, $crate::Level::INFO, { ?$($k).+ $($field)* })
+    );
+    (name: $name:expr, %$($k:ident).+ $($field:tt)* ) => (
+        $crate::event!(name: $name, $crate::Level::INFO, { %$($k).+ $($field)* })
+    );
+    (name: $name:expr, $($arg:tt)+ ) => (
+        $crate::event!(name: $name, $crate::Level::INFO, {}, $($arg)+)
+    );
+
+    // Target.
+    (target: $target:expr, { $($field:tt)* }, $($arg:tt)* ) => (
+        $crate::event!(target: $target, $crate::Level::INFO, { $($field)* }, $($arg)*)
+    );
+    (target: $target:expr, $($k:ident).+ $($field:tt)* ) => (
+        $crate::event!(target: $target, $crate::Level::INFO, { $($k).+ $($field)* })
+    );
+    (target: $target:expr, ?$($k:ident).+ $($field:tt)* ) => (
+        $crate::event!(target: $target, $crate::Level::INFO, { ?$($k).+ $($field)* })
+    );
+    (target: $target:expr, %$($k:ident).+ $($field:tt)* ) => (
+        $crate::event!(target: $target, $crate::Level::INFO, { %$($k).+ $($field)* })
+    );
+    (target: $target:expr, $($arg:tt)+ ) => (
+        $crate::event!(target: $target, $crate::Level::INFO, {}, $($arg)+)
+    );
+
+    // Parent.
     (parent: $parent:expr, { $($field:tt)+ }, $($arg:tt)+ ) => (
         $crate::event!(
             target: module_path!(),
@@ -1565,21 +2035,8 @@ macro_rules! info {
             $($arg)+
         )
     );
-    (target: $target:expr, { $($field:tt)* }, $($arg:tt)* ) => (
-        $crate::event!(target: $target, $crate::Level::INFO, { $($field)* }, $($arg)*)
-    );
-    (target: $target:expr, $($k:ident).+ $($field:tt)* ) => (
-        $crate::event!(target: $target, $crate::Level::INFO, { $($k).+ $($field)* })
-    );
-    (target: $target:expr, ?$($k:ident).+ $($field:tt)* ) => (
-        $crate::event!(target: $target, $crate::Level::INFO, { ?$($k).+ $($field)* })
-    );
-    (target: $target:expr, %$($k:ident).+ $($field:tt)* ) => (
-        $crate::event!(target: $target, $crate::Level::INFO, { $($k).+ $($field)* })
-    );
-    (target: $target:expr, $($arg:tt)+ ) => (
-        $crate::event!(target: $target, $crate::Level::INFO, {}, $($arg)+)
-    );
+
+    // ...
     ({ $($field:tt)+ }, $($arg:tt)+ ) => (
         $crate::event!(
             target: module_path!(),
@@ -1685,11 +2142,47 @@ macro_rules! info {
 ///     warning = warn_description,
 ///     "Received warning for input: {:?}", input,
 /// );
+/// warn!(name: "invalid", ?input);
 /// # }
 /// ```
 #[macro_export]
 macro_rules! warn {
-     (target: $target:expr, parent: $parent:expr, { $($field:tt)* }, $($arg:tt)* ) => (
+    // Name / target / parent.
+    (name: $name:expr, target: $target:expr, parent: $parent:expr, { $($field:tt)* }, $($arg:tt)* ) => (
+        $crate::event!(name: $name, target: $target, parent: $parent, $crate::Level::WARN, { $($field)* }, $($arg)*)
+    );
+    (name: $name:expr, target: $target:expr, parent: $parent:expr, $($k:ident).+ $($field:tt)+ ) => (
+        $crate::event!(name: $name, target: $target, parent: $parent, $crate::Level::WARN, { $($k).+ $($field)+ })
+    );
+    (name: $name:expr, target: $target:expr, parent: $parent:expr, ?$($k:ident).+ $($field:tt)+ ) => (
+        $crate::event!(name: $name, target: $target, parent: $parent, $crate::Level::WARN, { $($k).+ $($field)+ })
+    );
+    (name: $name:expr, target: $target:expr, parent: $parent:expr, %$($k:ident).+ $($field:tt)+ ) => (
+        $crate::event!(name: $name, target: $target, parent: $parent, $crate::Level::WARN, { $($k).+ $($field)+ })
+    );
+    (name: $name:expr, target: $target:expr, parent: $parent:expr, $($arg:tt)+ ) => (
+        $crate::event!(name: $name, target: $target, parent: $parent, $crate::Level::WARN, {}, $($arg)+)
+    );
+
+    // Name / target.
+    (name: $name:expr, target: $target:expr, { $($field:tt)* }, $($arg:tt)* ) => (
+        $crate::event!(name: $name, target: $target, $crate::Level::WARN, { $($field)* }, $($arg)*)
+    );
+    (name: $name:expr, target: $target:expr, $($k:ident).+ $($field:tt)+ ) => (
+        $crate::event!(name: $name, target: $target, $crate::Level::WARN, { $($k).+ $($field)+ })
+    );
+    (name: $name:expr, target: $target:expr, ?$($k:ident).+ $($field:tt)+ ) => (
+        $crate::event!(name: $name, target: $target, $crate::Level::WARN, { $($k).+ $($field)+ })
+    );
+    (name: $name:expr, target: $target:expr, %$($k:ident).+ $($field:tt)+ ) => (
+        $crate::event!(name: $name, target: $target, $crate::Level::WARN, { $($k).+ $($field)+ })
+    );
+    (name: $name:expr, target: $target:expr, $($arg:tt)+ ) => (
+        $crate::event!(name: $name, target: $target, $crate::Level::WARN, {}, $($arg)+)
+    );
+
+    // Target / parent.
+    (target: $target:expr, parent: $parent:expr, { $($field:tt)* }, $($arg:tt)* ) => (
         $crate::event!(target: $target, parent: $parent, $crate::Level::WARN, { $($field)* }, $($arg)*)
     );
     (target: $target:expr, parent: $parent:expr, $($k:ident).+ $($field:tt)+ ) => (
@@ -1704,6 +2197,59 @@ macro_rules! warn {
     (target: $target:expr, parent: $parent:expr, $($arg:tt)+ ) => (
         $crate::event!(target: $target, parent: $parent, $crate::Level::WARN, {}, $($arg)+)
     );
+
+    // Name / parent.
+    (name: $name:expr, parent: $parent:expr, { $($field:tt)* }, $($arg:tt)* ) => (
+        $crate::event!(name: $name, parent: $parent, $crate::Level::WARN, { $($field)* }, $($arg)*)
+    );
+    (name: $name:expr, parent: $parent:expr, $($k:ident).+ $($field:tt)+ ) => (
+        $crate::event!(name: $name, parent: $parent, $crate::Level::WARN, { $($k).+ $($field)+ })
+    );
+    (name: $name:expr, parent: $parent:expr, ?$($k:ident).+ $($field:tt)+ ) => (
+        $crate::event!(name: $name, parent: $parent, $crate::Level::WARN, { $($k).+ $($field)+ })
+    );
+    (name: $name:expr, parent: $parent:expr, %$($k:ident).+ $($field:tt)+ ) => (
+        $crate::event!(name: $name, parent: $parent, $crate::Level::WARN, { $($k).+ $($field)+ })
+    );
+    (name: $name:expr, parent: $parent:expr, $($arg:tt)+ ) => (
+        $crate::event!(name: $name, parent: $parent, $crate::Level::WARN, {}, $($arg)+)
+    );
+
+    // Name.
+    (name: $name:expr, { $($field:tt)* }, $($arg:tt)* ) => (
+        $crate::event!(name: $name, $crate::Level::WARN, { $($field)* }, $($arg)*)
+    );
+    (name: $name:expr, $($k:ident).+ $($field:tt)* ) => (
+        $crate::event!(name: $name, $crate::Level::WARN, { $($k).+ $($field)* })
+    );
+    (name: $name:expr, ?$($k:ident).+ $($field:tt)* ) => (
+        $crate::event!(name: $name, $crate::Level::WARN, { ?$($k).+ $($field)* })
+    );
+    (name: $name:expr, %$($k:ident).+ $($field:tt)* ) => (
+        $crate::event!(name: $name, $crate::Level::WARN, { %$($k).+ $($field)* })
+    );
+    (name: $name:expr, $($arg:tt)+ ) => (
+        $crate::event!(name: $name, $crate::Level::WARN, {}, $($arg)+)
+    );
+
+    // Target.
+    (target: $target:expr, { $($field:tt)* }, $($arg:tt)* ) => (
+        $crate::event!(target: $target, $crate::Level::WARN, { $($field)* }, $($arg)*)
+    );
+    (target: $target:expr, $($k:ident).+ $($field:tt)* ) => (
+        $crate::event!(target: $target, $crate::Level::WARN, { $($k).+ $($field)* })
+    );
+    (target: $target:expr, ?$($k:ident).+ $($field:tt)* ) => (
+        $crate::event!(target: $target, $crate::Level::WARN, { ?$($k).+ $($field)* })
+    );
+    (target: $target:expr, %$($k:ident).+ $($field:tt)* ) => (
+        $crate::event!(target: $target, $crate::Level::WARN, { %$($k).+ $($field)* })
+    );
+    (target: $target:expr, $($arg:tt)+ ) => (
+        $crate::event!(target: $target, $crate::Level::WARN, {}, $($arg)+)
+    );
+
+    // Parent.
     (parent: $parent:expr, { $($field:tt)+ }, $($arg:tt)+ ) => (
         $crate::event!(
             target: module_path!(),
@@ -1770,21 +2316,8 @@ macro_rules! warn {
             $($arg)+
         )
     );
-    (target: $target:expr, { $($field:tt)* }, $($arg:tt)* ) => (
-        $crate::event!(target: $target, $crate::Level::WARN, { $($field)* }, $($arg)*)
-    );
-    (target: $target:expr, $($k:ident).+ $($field:tt)* ) => (
-        $crate::event!(target: $target, $crate::Level::WARN, { $($k).+ $($field)* })
-    );
-    (target: $target:expr, ?$($k:ident).+ $($field:tt)* ) => (
-        $crate::event!(target: $target, $crate::Level::WARN, { ?$($k).+ $($field)* })
-    );
-    (target: $target:expr, %$($k:ident).+ $($field:tt)* ) => (
-        $crate::event!(target: $target, $crate::Level::WARN, { %$($k).+ $($field)* })
-    );
-    (target: $target:expr, $($arg:tt)+ ) => (
-        $crate::event!(target: $target, $crate::Level::WARN, {}, $($arg)+)
-    );
+
+    // ...
     ({ $($field:tt)+ }, $($arg:tt)+ ) => (
         $crate::event!(
             target: module_path!(),
@@ -1886,11 +2419,47 @@ macro_rules! warn {
 /// error!(port, error = %err_info);
 /// error!(target: "app_events", "App Error: {}", err_info);
 /// error!({ info = err_info }, "error on port: {}", port);
+/// error!(name: "invalid_input", "Invalid input: {}", err_info);
 /// # }
 /// ```
 #[macro_export]
 macro_rules! error {
-     (target: $target:expr, parent: $parent:expr, { $($field:tt)* }, $($arg:tt)* ) => (
+    // Name / target / parent.
+    (name: $name:expr, target: $target:expr, parent: $parent:expr, { $($field:tt)* }, $($arg:tt)* ) => (
+        $crate::event!(name: $name, target: $target, parent: $parent, $crate::Level::ERROR, { $($field)* }, $($arg)*)
+    );
+    (name: $name:expr, target: $target:expr, parent: $parent:expr, $($k:ident).+ $($field:tt)+ ) => (
+        $crate::event!(name: $name, target: $target, parent: $parent, $crate::Level::ERROR, { $($k).+ $($field)+ })
+    );
+    (name: $name:expr, target: $target:expr, parent: $parent:expr, ?$($k:ident).+ $($field:tt)+ ) => (
+        $crate::event!(name: $name, target: $target, parent: $parent, $crate::Level::ERROR, { $($k).+ $($field)+ })
+    );
+    (name: $name:expr, target: $target:expr, parent: $parent:expr, %$($k:ident).+ $($field:tt)+ ) => (
+        $crate::event!(name: $name, target: $target, parent: $parent, $crate::Level::ERROR, { $($k).+ $($field)+ })
+    );
+    (name: $name:expr, target: $target:expr, parent: $parent:expr, $($arg:tt)+ ) => (
+        $crate::event!(name: $name, target: $target, parent: $parent, $crate::Level::ERROR, {}, $($arg)+)
+    );
+
+    // Name / target.
+    (name: $name:expr, target: $target:expr, { $($field:tt)* }, $($arg:tt)* ) => (
+        $crate::event!(name: $name, target: $target, $crate::Level::ERROR, { $($field)* }, $($arg)*)
+    );
+    (name: $name:expr, target: $target:expr, $($k:ident).+ $($field:tt)+ ) => (
+        $crate::event!(name: $name, target: $target, $crate::Level::ERROR, { $($k).+ $($field)+ })
+    );
+    (name: $name:expr, target: $target:expr, ?$($k:ident).+ $($field:tt)+ ) => (
+        $crate::event!(name: $name, target: $target, $crate::Level::ERROR, { $($k).+ $($field)+ })
+    );
+    (name: $name:expr, target: $target:expr, %$($k:ident).+ $($field:tt)+ ) => (
+        $crate::event!(name: $name, target: $target, $crate::Level::ERROR, { $($k).+ $($field)+ })
+    );
+    (name: $name:expr, target: $target:expr, $($arg:tt)+ ) => (
+        $crate::event!(name: $name, target: $target, $crate::Level::ERROR, {}, $($arg)+)
+    );
+
+    // Target / parent.
+    (target: $target:expr, parent: $parent:expr, { $($field:tt)* }, $($arg:tt)* ) => (
         $crate::event!(target: $target, parent: $parent, $crate::Level::ERROR, { $($field)* }, $($arg)*)
     );
     (target: $target:expr, parent: $parent:expr, $($k:ident).+ $($field:tt)+ ) => (
@@ -1905,6 +2474,59 @@ macro_rules! error {
     (target: $target:expr, parent: $parent:expr, $($arg:tt)+ ) => (
         $crate::event!(target: $target, parent: $parent, $crate::Level::ERROR, {}, $($arg)+)
     );
+
+    // Name / parent.
+    (name: $name:expr, parent: $parent:expr, { $($field:tt)* }, $($arg:tt)* ) => (
+        $crate::event!(name: $name, parent: $parent, $crate::Level::ERROR, { $($field)* }, $($arg)*)
+    );
+    (name: $name:expr, parent: $parent:expr, $($k:ident).+ $($field:tt)+ ) => (
+        $crate::event!(name: $name, parent: $parent, $crate::Level::ERROR, { $($k).+ $($field)+ })
+    );
+    (name: $name:expr, parent: $parent:expr, ?$($k:ident).+ $($field:tt)+ ) => (
+        $crate::event!(name: $name, parent: $parent, $crate::Level::ERROR, { $($k).+ $($field)+ })
+    );
+    (name: $name:expr, parent: $parent:expr, %$($k:ident).+ $($field:tt)+ ) => (
+        $crate::event!(name: $name, parent: $parent, $crate::Level::ERROR, { $($k).+ $($field)+ })
+    );
+    (name: $name:expr, parent: $parent:expr, $($arg:tt)+ ) => (
+        $crate::event!(name: $name, parent: $parent, $crate::Level::ERROR, {}, $($arg)+)
+    );
+
+    // Name.
+    (name: $name:expr, { $($field:tt)* }, $($arg:tt)* ) => (
+        $crate::event!(name: $name, $crate::Level::ERROR, { $($field)* }, $($arg)*)
+    );
+    (name: $name:expr, $($k:ident).+ $($field:tt)* ) => (
+        $crate::event!(name: $name, $crate::Level::ERROR, { $($k).+ $($field)* })
+    );
+    (name: $name:expr, ?$($k:ident).+ $($field:tt)* ) => (
+        $crate::event!(name: $name, $crate::Level::ERROR, { ?$($k).+ $($field)* })
+    );
+    (name: $name:expr, %$($k:ident).+ $($field:tt)* ) => (
+        $crate::event!(name: $name, $crate::Level::ERROR, { %$($k).+ $($field)* })
+    );
+    (name: $name:expr, $($arg:tt)+ ) => (
+        $crate::event!(name: $name, $crate::Level::ERROR, {}, $($arg)+)
+    );
+
+    // Target.
+    (target: $target:expr, { $($field:tt)* }, $($arg:tt)* ) => (
+        $crate::event!(target: $target, $crate::Level::ERROR, { $($field)* }, $($arg)*)
+    );
+    (target: $target:expr, $($k:ident).+ $($field:tt)* ) => (
+        $crate::event!(target: $target, $crate::Level::ERROR, { $($k).+ $($field)* })
+    );
+    (target: $target:expr, ?$($k:ident).+ $($field:tt)* ) => (
+        $crate::event!(target: $target, $crate::Level::ERROR, { ?$($k).+ $($field)* })
+    );
+    (target: $target:expr, %$($k:ident).+ $($field:tt)* ) => (
+        $crate::event!(target: $target, $crate::Level::ERROR, { %$($k).+ $($field)* })
+    );
+    (target: $target:expr, $($arg:tt)+ ) => (
+        $crate::event!(target: $target, $crate::Level::ERROR, {}, $($arg)+)
+    );
+
+    // Parent.
     (parent: $parent:expr, { $($field:tt)+ }, $($arg:tt)+ ) => (
         $crate::event!(
             target: module_path!(),
@@ -1971,21 +2593,8 @@ macro_rules! error {
             $($arg)+
         )
     );
-    (target: $target:expr, { $($field:tt)* }, $($arg:tt)* ) => (
-        $crate::event!(target: $target, $crate::Level::ERROR, { $($field)* }, $($arg)*)
-    );
-    (target: $target:expr, $($k:ident).+ $($field:tt)* ) => (
-        $crate::event!(target: $target, $crate::Level::ERROR, { $($k).+ $($field)* })
-    );
-    (target: $target:expr, ?$($k:ident).+ $($field:tt)* ) => (
-        $crate::event!(target: $target, $crate::Level::ERROR, { ?$($k).+ $($field)* })
-    );
-    (target: $target:expr, %$($k:ident).+ $($field:tt)* ) => (
-        $crate::event!(target: $target, $crate::Level::ERROR, { %$($k).+ $($field)* })
-    );
-    (target: $target:expr, $($arg:tt)+ ) => (
-        $crate::event!(target: $target, $crate::Level::ERROR, {}, $($arg)+)
-    );
+
+    // ...
     ({ $($field:tt)+ }, $($arg:tt)+ ) => (
         $crate::event!(
             target: module_path!(),
@@ -2107,13 +2716,13 @@ macro_rules! callsite {
                 target: $target,
                 level: $lvl,
                 fields: $crate::fieldset!( $($fields)* ),
-                callsite: &CALLSITE,
+                callsite: &__CALLSITE,
                 kind: $kind,
             }
         };
-        static CALLSITE: $crate::callsite::DefaultCallsite = $crate::callsite::DefaultCallsite::new(&META);
-        CALLSITE.register();
-        &CALLSITE
+        static __CALLSITE: $crate::callsite::DefaultCallsite = $crate::callsite::DefaultCallsite::new(&META);
+        __CALLSITE.register();
+        &__CALLSITE
     }};
 }
 
@@ -2157,7 +2766,7 @@ macro_rules! callsite2 {
                 target: $target,
                 level: $lvl,
                 fields: $crate::fieldset!( $($fields)* ),
-                callsite: &CALLSITE,
+                callsite: &__CALLSITE,
                 kind: $kind,
             }
         };
@@ -2193,79 +2802,79 @@ macro_rules! valueset {
     // };
     (@ { $(,)* $($out:expr),* }, $next:expr, $($k:ident).+ = ?$val:expr, $($rest:tt)*) => {
         $crate::valueset!(
-            @ { $($out),*, (&$next, Some(&debug(&$val) as &dyn Value)) },
+            @ { $($out),*, (&$next, ::core::option::Option::Some(&debug(&$val) as &dyn Value)) },
             $next,
             $($rest)*
         )
     };
     (@ { $(,)* $($out:expr),* }, $next:expr, $($k:ident).+ = %$val:expr, $($rest:tt)*) => {
         $crate::valueset!(
-            @ { $($out),*, (&$next, Some(&display(&$val) as &dyn Value)) },
+            @ { $($out),*, (&$next, ::core::option::Option::Some(&display(&$val) as &dyn Value)) },
             $next,
             $($rest)*
         )
     };
     (@ { $(,)* $($out:expr),* }, $next:expr, $($k:ident).+ = $val:expr, $($rest:tt)*) => {
         $crate::valueset!(
-            @ { $($out),*, (&$next, Some(&$val as &dyn Value)) },
+            @ { $($out),*, (&$next, ::core::option::Option::Some(&$val as &dyn Value)) },
             $next,
             $($rest)*
         )
     };
     (@ { $(,)* $($out:expr),* }, $next:expr, $($k:ident).+, $($rest:tt)*) => {
         $crate::valueset!(
-            @ { $($out),*, (&$next, Some(&$($k).+ as &dyn Value)) },
+            @ { $($out),*, (&$next, ::core::option::Option::Some(&$($k).+ as &dyn Value)) },
             $next,
             $($rest)*
         )
     };
     (@ { $(,)* $($out:expr),* }, $next:expr, ?$($k:ident).+, $($rest:tt)*) => {
         $crate::valueset!(
-            @ { $($out),*, (&$next, Some(&debug(&$($k).+) as &dyn Value)) },
+            @ { $($out),*, (&$next, ::core::option::Option::Some(&debug(&$($k).+) as &dyn Value)) },
             $next,
             $($rest)*
         )
     };
     (@ { $(,)* $($out:expr),* }, $next:expr, %$($k:ident).+, $($rest:tt)*) => {
         $crate::valueset!(
-            @ { $($out),*, (&$next, Some(&display(&$($k).+) as &dyn Value)) },
+            @ { $($out),*, (&$next, ::core::option::Option::Some(&display(&$($k).+) as &dyn Value)) },
             $next,
             $($rest)*
         )
     };
     (@ { $(,)* $($out:expr),* }, $next:expr, $($k:ident).+ = ?$val:expr) => {
         $crate::valueset!(
-            @ { $($out),*, (&$next, Some(&debug(&$val) as &dyn Value)) },
+            @ { $($out),*, (&$next, ::core::option::Option::Some(&debug(&$val) as &dyn Value)) },
             $next,
         )
     };
     (@ { $(,)* $($out:expr),* }, $next:expr, $($k:ident).+ = %$val:expr) => {
         $crate::valueset!(
-            @ { $($out),*, (&$next, Some(&display(&$val) as &dyn Value)) },
+            @ { $($out),*, (&$next, ::core::option::Option::Some(&display(&$val) as &dyn Value)) },
             $next,
         )
     };
     (@ { $(,)* $($out:expr),* }, $next:expr, $($k:ident).+ = $val:expr) => {
         $crate::valueset!(
-            @ { $($out),*, (&$next, Some(&$val as &dyn Value)) },
+            @ { $($out),*, (&$next, ::core::option::Option::Some(&$val as &dyn Value)) },
             $next,
         )
     };
     (@ { $(,)* $($out:expr),* }, $next:expr, $($k:ident).+) => {
         $crate::valueset!(
-            @ { $($out),*, (&$next, Some(&$($k).+ as &dyn Value)) },
+            @ { $($out),*, (&$next, ::core::option::Option::Some(&$($k).+ as &dyn Value)) },
             $next,
         )
     };
     (@ { $(,)* $($out:expr),* }, $next:expr, ?$($k:ident).+) => {
         $crate::valueset!(
-            @ { $($out),*, (&$next, Some(&debug(&$($k).+) as &dyn Value)) },
+            @ { $($out),*, (&$next, ::core::option::Option::Some(&debug(&$($k).+) as &dyn Value)) },
             $next,
         )
     };
     (@ { $(,)* $($out:expr),* }, $next:expr, %$($k:ident).+) => {
         $crate::valueset!(
-            @ { $($out),*, (&$next, Some(&display(&$($k).+) as &dyn Value)) },
+            @ { $($out),*, (&$next, ::core::option::Option::Some(&display(&$($k).+) as &dyn Value)) },
             $next,
         )
     };
@@ -2273,47 +2882,88 @@ macro_rules! valueset {
     // Handle literal names
     (@ { $(,)* $($out:expr),* }, $next:expr, $k:literal = ?$val:expr, $($rest:tt)*) => {
         $crate::valueset!(
-            @ { $($out),*, (&$next, Some(&debug(&$val) as &dyn Value)) },
+            @ { $($out),*, (&$next, ::core::option::Option::Some(&debug(&$val) as &dyn Value)) },
             $next,
             $($rest)*
         )
     };
     (@ { $(,)* $($out:expr),* }, $next:expr, $k:literal = %$val:expr, $($rest:tt)*) => {
         $crate::valueset!(
-            @ { $($out),*, (&$next, Some(&display(&$val) as &dyn Value)) },
+            @ { $($out),*, (&$next, ::core::option::Option::Some(&display(&$val) as &dyn Value)) },
             $next,
             $($rest)*
         )
     };
     (@ { $(,)* $($out:expr),* }, $next:expr, $k:literal = $val:expr, $($rest:tt)*) => {
         $crate::valueset!(
-            @ { $($out),*, (&$next, Some(&$val as &dyn Value)) },
+            @ { $($out),*, (&$next, ::core::option::Option::Some(&$val as &dyn Value)) },
             $next,
             $($rest)*
         )
     };
     (@ { $(,)* $($out:expr),* }, $next:expr, $k:literal = ?$val:expr) => {
         $crate::valueset!(
-            @ { $($out),*, (&$next, Some(&debug(&$val) as &dyn Value)) },
+            @ { $($out),*, (&$next, ::core::option::Option::Some(&debug(&$val) as &dyn Value)) },
             $next,
         )
     };
     (@ { $(,)* $($out:expr),* }, $next:expr, $k:literal = %$val:expr) => {
         $crate::valueset!(
-            @ { $($out),*, (&$next, Some(&display(&$val) as &dyn Value)) },
+            @ { $($out),*, (&$next, ::core::option::Option::Some(&display(&$val) as &dyn Value)) },
             $next,
         )
     };
     (@ { $(,)* $($out:expr),* }, $next:expr, $k:literal = $val:expr) => {
+        $crate::valueset!(
+            @ { $($out),*, (&$next, ::core::option::Option::Some(&$val as &dyn Value)) },
+            $next,
+        )
+    };
+
+    // Handle constant names
+    (@ { $(,)* $($out:expr),* }, $next:expr, { $k:expr } = ?$val:expr, $($rest:tt)*) => {
+        $crate::valueset!(
+            @ { $($out),*, (&$next, Some(&debug(&$val) as &dyn Value)) },
+            $next,
+            $($rest)*
+        )
+    };
+    (@ { $(,)* $($out:expr),* }, $next:expr, { $k:expr } = %$val:expr, $($rest:tt)*) => {
+        $crate::valueset!(
+            @ { $($out),*, (&$next, Some(&display(&$val) as &dyn Value)) },
+            $next,
+            $($rest)*
+        )
+    };
+    (@ { $(,)* $($out:expr),* }, $next:expr, { $k:expr } = $val:expr, $($rest:tt)*) => {
+        $crate::valueset!(
+            @ { $($out),*, (&$next, Some(&$val as &dyn Value)) },
+            $next,
+            $($rest)*
+        )
+    };
+    (@ { $(,)* $($out:expr),* }, $next:expr, { $k:expr } = ?$val:expr) => {
+        $crate::valueset!(
+            @ { $($out),*, (&$next, Some(&debug(&$val) as &dyn Value)) },
+            $next,
+        )
+    };
+    (@ { $(,)* $($out:expr),* }, $next:expr, { $k:expr } = %$val:expr) => {
+        $crate::valueset!(
+            @ { $($out),*, (&$next, Some(&display(&$val) as &dyn Value)) },
+            $next,
+        )
+    };
+    (@ { $(,)* $($out:expr),* }, $next:expr, { $k:expr } = $val:expr) => {
         $crate::valueset!(
             @ { $($out),*, (&$next, Some(&$val as &dyn Value)) },
             $next,
         )
     };
 
-    // Remainder is unparseable, but exists --- must be format args!
+    // Remainder is unparsable, but exists --- must be format args!
     (@ { $(,)* $($out:expr),* }, $next:expr, $($rest:tt)+) => {
-        $crate::valueset!(@ { (&$next, Some(&format_args!($($rest)+) as &dyn Value)), $($out),* }, $next, )
+        $crate::valueset!(@ { (&$next, ::core::option::Option::Some(&::core::format_args!($($rest)+) as &dyn Value)), $($out),* }, $next, )
     };
 
     // === entry ===
@@ -2324,7 +2974,7 @@ macro_rules! valueset {
             let mut iter = $fields.iter();
             $fields.value_set($crate::valueset!(
                 @ { },
-                iter.next().expect("FieldSet corrupted (this is a bug)"),
+                ::core::iter::Iterator::next(&mut iter).expect("FieldSet corrupted (this is a bug)"),
                 $($kvs)+
             ))
         }
@@ -2380,6 +3030,17 @@ macro_rules! fieldset {
         $crate::fieldset!(@ { $($out),*, $k } $($rest)*)
     };
 
+    // Handle constant names
+    (@ { $(,)* $($out:expr),* } { $k:expr } = ?$val:expr, $($rest:tt)*) => {
+        $crate::fieldset!(@ { $($out),*, $k } $($rest)*)
+    };
+    (@ { $(,)* $($out:expr),* } { $k:expr } = %$val:expr, $($rest:tt)*) => {
+        $crate::fieldset!(@ { $($out),*, $k } $($rest)*)
+    };
+    (@ { $(,)* $($out:expr),* } { $k:expr } = $val:expr, $($rest:tt)*) => {
+        $crate::fieldset!(@ { $($out),*, $k } $($rest)*)
+    };
+
     // Remainder is unparseable, but exists --- must be format args!
     (@ { $(,)* $($out:expr),* } $($rest:tt)+) => {
         $crate::fieldset!(@ { "message", $($out),*, })
diff --git a/vendor/tracing/src/span.rs b/vendor/tracing/src/span.rs
index 58822f4d9..3c235dc79 100644
--- a/vendor/tracing/src/span.rs
+++ b/vendor/tracing/src/span.rs
@@ -22,7 +22,7 @@
 //!   override their default values.
 //! - The span's [verbosity level]
 //! - A string literal providing the span's name.
-//! - Finally, between zero and 32 arbitrary key/value fields.
+//! - Finally, zero or more arbitrary key/value fields.
 //!
 //! [`target`]: super::Metadata::target
 //!
@@ -824,7 +824,7 @@ impl Span {
     ///
     /// 
     ///     Note: The returned 
-    ///     EnteredSpan guard does not implement Send.
+    ///     EnteredSpan guard does not implement Send.
     ///     Dropping the guard will exit this span, and if the guard is sent
     ///     to another thread and dropped there, that thread may never have entered
     ///     this span. Thus, EnteredSpans should not be sent between threads.
@@ -1617,7 +1617,7 @@ mod test {
 
     #[test]
     fn test_record_backwards_compat() {
-        Span::current().record("some-key", &"some text");
-        Span::current().record("some-key", &false);
+        Span::current().record("some-key", "some text");
+        Span::current().record("some-key", false);
     }
 }
-- 
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