diff --git a/src/parser/list.rs b/src/parser/list.rs
index ccf6687b..6a91cb76 100644
--- a/src/parser/list.rs
+++ b/src/parser/list.rs
@@ -26,7 +26,6 @@ impl<T> Node<T> {
     }
 }
 
-// TODO: This Debug is only needed because of the try_unwrap+expect
 impl<T> List<T> {
     pub fn new() -> Self {
         List { head: None }
@@ -47,7 +46,7 @@ impl<T> List<T> {
             Some(popped_node) => {
                 let extracted_node = match Rc::try_unwrap(popped_node) {
                     Ok(node) => node,
-                    Err(e) => panic!("try_unwrap failed on Rc in pop_front on List."),
+                    Err(_) => panic!("try_unwrap failed on Rc in pop_front on List."),
                 };
                 (
                     Some(extracted_node.data),
diff --git a/src/parser/parser_context.rs b/src/parser/parser_context.rs
index 76d1ab23..32bc039b 100644
--- a/src/parser/parser_context.rs
+++ b/src/parser/parser_context.rs
@@ -4,13 +4,13 @@ use nom::IResult;
 
 use super::error::CustomError;
 use super::error::MyError;
+use super::error::Res;
 use super::list::List;
 use super::list::Node;
 use super::token::Token;
 use super::Context;
 
-type Matcher =
-    dyn for<'r, 's> Fn(Context<'r, 's>, &'s str) -> IResult<&'s str, &'s str, CustomError<&'s str>>;
+type Matcher = dyn for<'r, 's> Fn(Context<'r, 's>, &'s str) -> Res<&'s str, &'s str>;
 
 #[derive(Debug, Clone)]
 pub struct ContextTree<'r, 's> {