span docs

Signed-off-by: Yoshua Wuyts <yoshuawuyts@gmail.com>
async-rs · Jun 9, 2019 · 03ac5ba · 03ac5ba
1 parent d9d8bed
commit 03ac5ba
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/src/lib.rs b/src/lib.rs
@@ -110,6 +110,9 @@ pub use logger::Logger;
 
 /// A new span created by [`span!`].
 ///
+/// An `trace!` is emitted when this struct is constructed. And another `trace!` is emitted when
+/// this struct is dropped.
+///
 /// [`span!`]: macro.span.html
 #[must_use]
 #[derive(Debug)]