From 2d0072a17b5a20966304d623374cc56695b0ab5a Mon Sep 17 00:00:00 2001
From: Eliza Weisman <eliza@buoyant.io>
Date: Thu, 12 Sep 2019 11:26:40 -0700
Subject: [PATCH] attributes: fix async fn not moving args into body (#342)

This fixes compilation errors with `#[instrument]`ed `async fn`s on the
latest nightly. The generated `async` block was not `async move`, so the
function's attributes were not moved into it.

Signed-off-by: Eliza Weisman <eliza@buoyant.io>
---
 tracing-attributes/src/lib.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tracing-attributes/src/lib.rs b/tracing-attributes/src/lib.rs
index f5220859dc..83cd903468 100644
--- a/tracing-attributes/src/lib.rs
+++ b/tracing-attributes/src/lib.rs
@@ -170,7 +170,7 @@ pub fn instrument(args: TokenStream, item: TokenStream) -> TokenStream {
         let await_kwd = syn::Ident::new("await", block.span());
         quote_spanned! {block.span()=>
             tracing_futures::Instrument::instrument(
-                #async_kwd { #block },
+                #async_kwd move { #block },
                 __tracing_attr_span
             )
                 .#await_kwd