Going to try removing clone from the tokens.

src/parser/nom_context.rs

@@ -69,18 +69,18 @@ impl<'r> ContextTree<'r> {
     }
 }
 
-#[derive(Debug, Clone)]
+#[derive(Debug)]
 pub enum ContextElement<'r> {
     FailMatcherNode(FailMatcherNode<'r>),
     PreviousElementNode(PreviousElementNode<'r>),
 }
 
-#[derive(Debug, Clone)]
+#[derive(Debug)]
 pub struct FailMatcherNode<'r> {
     pub fail_matcher: ChainBehavior<'r>,
 }
 
-#[derive(Debug, Clone)]
+#[derive(Debug)]
 pub struct PreviousElementNode<'r> {
     pub element: Token<'r>,
 }

src/parser/text.rs

@@ -33,7 +33,7 @@ use super::text_element_parser::paragraph;
 
 pub type Res<T, U> = IResult<T, U, VerboseError<T>>;
 
-#[derive(Debug, Clone)]
+#[derive(Debug)]
 pub enum TextElement<'a> {
     Span(Span<'a>),
     Space(Space<'a>),