Apply clippy suggestions for 1.67 (#769)

3 files changed, 6 insertions, 6 deletions

diff --git a/testing/Cargo.toml b/testing/Cargo.toml
index cd7d686..e1f1bb4 100644
--- a/testing/Cargo.toml
+++ b/testing/Cargo.toml
@@ -3,7 +3,8 @@ name = "askama_testing"
 version = "0.1.0"
 authors = ["Dirkjan Ochtman <dirkjan@ochtman.nl>"]
 workspace = ".."
-edition = "2018"
+edition = "2021"
+rust-version = "1.58"
 publish = false
 
 [features]
diff --git a/testing/tests/filters.rs b/testing/tests/filters.rs
index 5229ecd..b397e28 100644
--- a/testing/tests/filters.rs
+++ b/testing/tests/filters.rs
@@ -122,8 +122,7 @@ mod filters {
     }
     // for test_nested_filter_ref
     pub fn mytrim(s: &dyn (::std::fmt::Display)) -> ::askama::Result<String> {
-        let s = format!("{}", s);
-        Ok(s.trim().to_owned())
+        Ok(s.to_string().trim().to_owned())
     }
 }
 
diff --git a/testing/tests/simple.rs b/testing/tests/simple.rs
index ebc8267..627a8a3 100644
--- a/testing/tests/simple.rs
+++ b/testing/tests/simple.rs
@@ -311,14 +311,14 @@ struct FunctionRefTemplate {
 #[test]
 fn test_func_ref_call() {
     let t = FunctionRefTemplate {
-        world: |s, r| format!("world({}, {})", s, r),
+        world: |s, r| format!("world({s}, {r})"),
     };
     assert_eq!(t.render().unwrap(), "Hello, world(123, 4)!");
 }
 
 #[allow(clippy::trivially_copy_pass_by_ref)]
 fn world2(s: &str, v: u8) -> String {
-    format!("world{}{}", v, s)
+    format!("world{v}{s}")
 }
 
 #[derive(Template)]
@@ -346,7 +346,7 @@ struct FunctionTemplate;
 impl FunctionTemplate {
     #[allow(clippy::trivially_copy_pass_by_ref)]
     fn world3(&self, s: &str, v: u8) -> String {
-        format!("world{}{}", s, v)
+        format!("world{s}{v}")
     }
 }