change edition to 2021

diff --git a/src/test/ui/privacy/macro-private-reexport.rs b/src/test/ui/privacy/macro-private-reexport.rs
index 5b53a861d25b5524e1216cfd854ebc8703581812..bc3e6fb5c59f4d5ee26b0ce899475ecd86ed08bf 100644 (file)
--- a/src/test/ui/privacy/macro-private-reexport.rs
+++ b/src/test/ui/privacy/macro-private-reexport.rs
@@ -1,4 +1,4 @@
-// edition:2018
+// edition:2021
 
 mod foo {
     macro_rules! bar {