diff --git a/saphyr/src/scanner.rs b/saphyr/src/scanner.rs
index 15cda9c..eb16a44 100644
--- a/saphyr/src/scanner.rs
+++ b/saphyr/src/scanner.rs
@@ -414,7 +414,7 @@ impl<T: Iterator<Item = char>> Scanner<T> {
     /// clone of) the same error.
     #[inline]
     pub fn get_error(&self) -> Option<ScanError> {
-        self.error.as_ref().map(std::clone::Clone::clone)
+        self.error.clone()
     }
 
     /// Fill `self.buffer` with at least `count` characters.
@@ -746,7 +746,7 @@ impl<T: Iterator<Item = char>> Scanner<T> {
     /// # Errors
     /// This function returns an error if one of the key we would stale was required to be a key.
     fn stale_simple_keys(&mut self) -> ScanResult {
-        for (_, sk) in self.simple_keys.iter_mut().enumerate() {
+        for sk in &mut self.simple_keys {
             if sk.possible
                 // If not in a flow construct, simple keys cannot span multiple lines.
                 && self.flow_level == 0
diff --git a/saphyr/tests/basic.rs b/saphyr/tests/basic.rs
index b82ac2d..e516cd6 100644
--- a/saphyr/tests/basic.rs
+++ b/saphyr/tests/basic.rs
@@ -352,11 +352,11 @@ fn test_integer_key() {
 #[test]
 fn test_indentation_equality() {
     let four_spaces = YamlLoader::load_from_str(
-        r#"
+        r"
 hash:
     with:
         indentations
-"#,
+",
     )
     .unwrap()
     .into_iter()
@@ -364,11 +364,11 @@ hash:
     .unwrap();
 
     let two_spaces = YamlLoader::load_from_str(
-        r#"
+        r"
 hash:
   with:
     indentations
-"#,
+",
     )
     .unwrap()
     .into_iter()
@@ -376,11 +376,11 @@ hash:
     .unwrap();
 
     let one_space = YamlLoader::load_from_str(
-        r#"
+        r"
 hash:
  with:
   indentations
-"#,
+",
     )
     .unwrap()
     .into_iter()
@@ -388,11 +388,11 @@ hash:
     .unwrap();
 
     let mixed_spaces = YamlLoader::load_from_str(
-        r#"
+        r"
 hash:
      with:
                indentations
-"#,
+",
     )
     .unwrap()
     .into_iter()
@@ -408,7 +408,7 @@ hash:
 fn test_two_space_indentations() {
     // https://github.com/kbknapp/clap-rs/issues/965
 
-    let s = r#"
+    let s = r"
 subcommands:
   - server:
     about: server related commands
@@ -418,7 +418,7 @@ subcommands2:
 subcommands3:
  - server:
     about: server related commands
-            "#;
+            ";
 
     let out = YamlLoader::load_from_str(s).unwrap();
     let doc = &out.into_iter().next().unwrap();
diff --git a/saphyr/tests/emitter.rs b/saphyr/tests/emitter.rs
index 59028df..6460468 100644
--- a/saphyr/tests/emitter.rs
+++ b/saphyr/tests/emitter.rs
@@ -36,7 +36,7 @@ a4:
 
 #[test]
 fn test_emit_complex() {
-    let s = r#"
+    let s = r"
 cataloge:
   product: &coffee   { name: Coffee,    price: 2.5  ,  unit: 1l  }
   product: &cookies  { name: Cookies!,  price: 3.40 ,  unit: 400g}
@@ -54,7 +54,7 @@ products:
     bool key
   {}:
     empty hash key
-            "#;
+            ";
     let docs = YamlLoader::load_from_str(s).unwrap();
     let doc = &docs[0];
     let mut writer = String::new();
@@ -66,8 +66,8 @@ products:
         Ok(y) => y,
         Err(e) => panic!("{}", e),
     };
-    let doc_new = &docs_new[0];
-    assert_eq!(doc, doc_new);
+    let new_doc = &docs_new[0];
+    assert_eq!(doc, new_doc);
 }
 
 #[test]
@@ -190,7 +190,7 @@ fn test_empty_and_nested_compact() {
 
 fn test_empty_and_nested_flag(compact: bool) {
     let s = if compact {
-        r#"---
+        r"---
 a:
   b:
     c: hello
@@ -198,9 +198,9 @@ a:
 e:
   - f
   - g
-  - h: []"#
+  - h: []"
     } else {
-        r#"---
+        r"---
 a:
   b:
     c: hello
@@ -209,7 +209,7 @@ e:
   - f
   - g
   -
-    h: []"#
+    h: []"
     };
 
     let docs = YamlLoader::load_from_str(s).unwrap();
@@ -226,13 +226,13 @@ e:
 
 #[test]
 fn test_nested_arrays() {
-    let s = r#"---
+    let s = r"---
 a:
   - b
   - - c
     - d
     - - e
-      - f"#;
+      - f";
 
     let docs = YamlLoader::load_from_str(s).unwrap();
     let doc = &docs[0];
@@ -249,14 +249,14 @@ a:
 
 #[test]
 fn test_deeply_nested_arrays() {
-    let s = r#"---
+    let s = r"---
 a:
   - b
   - - c
     - d
     - - e
       - - f
-      - - e"#;
+      - - e";
 
     let docs = YamlLoader::load_from_str(s).unwrap();
     let doc = &docs[0];
@@ -273,12 +273,12 @@ a:
 
 #[test]
 fn test_nested_hashes() {
-    let s = r#"---
+    let s = r"---
 a:
   b:
     c:
       d:
-        e: f"#;
+        e: f";
 
     let docs = YamlLoader::load_from_str(s).unwrap();
     let doc = &docs[0];
diff --git a/saphyr/tests/yaml-test-suite.rs b/saphyr/tests/yaml-test-suite.rs
index 8e67dd4..befebc1 100644
--- a/saphyr/tests/yaml-test-suite.rs
+++ b/saphyr/tests/yaml-test-suite.rs
@@ -80,7 +80,7 @@ fn load_tests_from_file(entry: &DirEntry) -> Result<Vec<Test<YamlTest>>> {
     let test_name = file_name
         .strip_suffix(".yaml")
         .ok_or("unexpected filename")?;
-    let tests = YamlLoader::load_from_str(&fs::read_to_string(&entry.path())?)?;
+    let tests = YamlLoader::load_from_str(&fs::read_to_string(entry.path())?)?;
     let tests = tests[0].as_vec().ok_or("no test list found in file")?;
 
     let mut result = vec![];