Run cargo fix.

src/context/footnote_definition.rs

@@ -17,10 +17,10 @@ pub(crate) struct RenderFootnoteDefinition {}
 
 impl RenderFootnoteDefinition {
     pub(crate) fn new(
-        config: &Config,
-        output_directory: &Path,
-        output_file: &Path,
-        original: &IFootnoteDefinition,
+        _config: &Config,
+        _output_directory: &Path,
+        _output_file: &Path,
+        _original: &IFootnoteDefinition,
     ) -> Result<RenderFootnoteDefinition, CustomError> {
         Ok(RenderFootnoteDefinition {})
     }