Run cargo fix.

src/context/src_block.rs

@@ -15,9 +15,9 @@ pub(crate) struct RenderSrcBlock {
 
 impl RenderSrcBlock {
     pub(crate) fn new(
-        config: &Config,
-        output_directory: &Path,
-        output_file: &Path,
+        _config: &Config,
+        _output_directory: &Path,
+        _output_file: &Path,
         original: &ISrcBlock,
     ) -> Result<RenderSrcBlock, CustomError> {
         Ok(RenderSrcBlock {