Run cargo fix.

src/wasm_test/compare.rs

@@ -376,7 +376,7 @@ fn wasm_key_to_emacs_key<WK: std::fmt::Display>(wasm_key: WK) -> String {
 }
 
 fn compare_quoted_string<'e, 's, 'w>(
-    source: &'s str,
+    _source: &'s str,
     emacs: &'e str,
     wasm: &'w String,
 ) -> Result<WasmDiffResult<'s>, Box<dyn std::error::Error>> {
@@ -658,7 +658,7 @@ fn compare_object_tree<'e, 's, 'w>(
 }
 
 fn compare_number_lines<'e, 's, 'w>(
-    source: &'s str,
+    _source: &'s str,
     emacs: &'e Vec<Token<'s>>,
     wasm: &'w serde_json::Map<String, serde_json::Value>,
 ) -> Result<WasmDiffResult<'s>, Box<dyn std::error::Error>> {
@@ -745,7 +745,7 @@ fn compare_number_lines<'e, 's, 'w>(
 }
 
 fn compare_string_set<'e, 's, 'w>(
-    source: &'s str,
+    _source: &'s str,
     emacs: &'e Vec<Token<'s>>,
     wasm: &'w serde_json::Map<String, serde_json::Value>,
 ) -> Result<WasmDiffResult<'s>, Box<dyn std::error::Error>> {