From 445b41f030165fc67689c68110793975d8e8fa77 Mon Sep 17 00:00:00 2001
From: David Barsky <me@davidbarsky.com>
Date: Tue, 7 Jul 2020 19:41:45 -0400
Subject: [PATCH 1/3] tracing: attempt to monomorphization is_enabled call

---
 tracing/src/lib.rs    | 7 +++++++
 tracing/src/macros.rs | 2 +-
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/tracing/src/lib.rs b/tracing/src/lib.rs
index f32f67fc7b..126cd66303 100644
--- a/tracing/src/lib.rs
+++ b/tracing/src/lib.rs
@@ -869,6 +869,13 @@ pub mod __macro_support {
     pub type Once = tracing_core::Once;
 }
 
+#[doc(hidden)]
+// resolves https://github.com/tokio-rs/tracing/issues/783 by forcing a monomorphization
+// in tracing, not downstream crates.
+pub fn is_enabled(meta: &crate::Metadata<'_>) -> bool {
+    crate::dispatcher::get_default(|current| current.enabled(meta))
+}
+
 mod sealed {
     pub trait Sealed {}
 }
diff --git a/tracing/src/macros.rs b/tracing/src/macros.rs
index 024e6c71ce..405ded2ac1 100644
--- a/tracing/src/macros.rs
+++ b/tracing/src/macros.rs
@@ -1860,7 +1860,7 @@ macro_rules! is_enabled {
             true
         } else {
             let meta = $callsite.metadata();
-            $crate::dispatcher::get_default(|current| current.enabled(meta))
+            $crate::is_enabled(meta)
         }
     }};
 }

From 6fcef3ea105a986982b2f673a193aba4aec435f8 Mon Sep 17 00:00:00 2001
From: David Barsky <me@davidbarsky.com>
Date: Tue, 7 Jul 2020 20:03:16 -0400
Subject: [PATCH 2/3] Update tracing/src/lib.rs

Co-authored-by: Eliza Weisman <eliza@buoyant.io>
---
 tracing/src/lib.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tracing/src/lib.rs b/tracing/src/lib.rs
index 126cd66303..2dd27e7144 100644
--- a/tracing/src/lib.rs
+++ b/tracing/src/lib.rs
@@ -872,6 +872,7 @@ pub mod __macro_support {
 #[doc(hidden)]
 // resolves https://github.com/tokio-rs/tracing/issues/783 by forcing a monomorphization
 // in tracing, not downstream crates.
+#[inline]
 pub fn is_enabled(meta: &crate::Metadata<'_>) -> bool {
     crate::dispatcher::get_default(|current| current.enabled(meta))
 }

From 4c6442acd7aeac946264d5049ce2a6c870a4f47f Mon Sep 17 00:00:00 2001
From: David Barsky <me@davidbarsky.com>
Date: Tue, 7 Jul 2020 20:06:30 -0400
Subject: [PATCH 3/3] remove unnecessary imports

---
 tracing/src/macros.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tracing/src/macros.rs b/tracing/src/macros.rs
index 405ded2ac1..76a35016ea 100644
--- a/tracing/src/macros.rs
+++ b/tracing/src/macros.rs
@@ -539,7 +539,7 @@ macro_rules! event {
 
             if $crate::level_enabled!($lvl) {
                 #[allow(unused_imports)]
-                use $crate::{callsite, dispatcher, Event, field::{Value, ValueSet}};
+                use $crate::{callsite, Event, field::{Value, ValueSet}};
                 use $crate::callsite::Callsite;
                 let callsite = callsite! {
                     name: concat!(
@@ -584,7 +584,7 @@ macro_rules! event {
             );
             if $crate::level_enabled!($lvl) {
                 #[allow(unused_imports)]
-                use $crate::{callsite, dispatcher, Event, field::{Value, ValueSet}};
+                use $crate::{callsite, Event, field::{Value, ValueSet}};
                 use $crate::callsite::Callsite;
                 let callsite = callsite! {
                     name: concat!(