Update to Rust 2021 edition

dtolnay · dtolnay · commit 67b75b59ba4e · 2022-06-17T22:15:00.000-07:00
diff --git a/Cargo.toml b/Cargo.toml
@@ -2,7 +2,7 @@
 name = "json-benchmark"
 version = "0.0.1"
 authors = ["dtolnay@gmail.com"]
-edition = "2018"
+edition = "2021"
 publish = false
 
 [dependencies]
diff --git a/binary/Cargo.toml b/binary/Cargo.toml
@@ -2,7 +2,7 @@
 name = "binary-benchmark"
 version = "0.0.1"
 authors = ["dtolnay@gmail.com"]
-edition = "2018"
+edition = "2021"
 publish = false
 
 [dependencies]
