diff --git a/src/mime/field.rs b/src/mime/field.rs
index 0b93206..04d0c61 100644
--- a/src/mime/field.rs
+++ b/src/mime/field.rs
@@ -20,6 +20,7 @@ pub enum Content<'a> {
     ID(MessageID<'a>),
     Description(Unstructured<'a>),
 }
+#[allow(dead_code)]
 impl<'a> Content<'a> {
     pub fn ctype(&'a self) -> Option<&'a NaiveType<'a>> {
         match self {
diff --git a/src/mime/type.rs b/src/mime/type.rs
index 383e584..579d7f0 100644
--- a/src/mime/type.rs
+++ b/src/mime/type.rs
@@ -1,5 +1,5 @@
 use nom::{
-    bytes::complete::{is_not, tag},
+    bytes::complete::{tag},
     combinator::{map, opt},
     multi::many0,
     sequence::{preceded, terminated, tuple},
@@ -9,7 +9,6 @@ use nom::{
 use crate::mime::charset::EmailCharset;
 use crate::text::misc_token::{mime_word, MIMEWord};
 use crate::text::words::mime_atom;
-use crate::text::ascii;
 
 // --------- NAIVE TYPE
 #[derive(Debug, PartialEq)]
diff --git a/src/part/part.rs b/src/part/part.rs
index a896406..7a31ae7 100644
--- a/src/part/part.rs
+++ b/src/part/part.rs
@@ -62,6 +62,7 @@ pub enum MixedField<'a> {
     MIME(mime::field::Content<'a>),
     IMF(imf::field::Field<'a>),
 }
+#[allow(dead_code)]
 impl<'a> MixedField<'a> {
     pub fn mime(&self) -> Option<&mime::field::Content<'a>> {
         match self {
diff --git a/src/text/ascii.rs b/src/text/ascii.rs
index b59647b..9f37738 100644
--- a/src/text/ascii.rs
+++ b/src/text/ascii.rs
@@ -1,3 +1,5 @@
+#![allow(dead_code)]
+
 // ASCII
 // -- CONTROL CHARACTERS
 pub const NULL: u8 = 0x00; // NULL
diff --git a/src/text/whitespace.rs b/src/text/whitespace.rs
index be0747d..66c7e5c 100644
--- a/src/text/whitespace.rs
+++ b/src/text/whitespace.rs
@@ -25,13 +25,6 @@ pub fn obs_crlf(input: &[u8]) -> IResult<&[u8], &[u8]> {
     alt((tag(ascii::CRLF), tag(&[ascii::CR]), tag(&[ascii::LF])))(input)
 }
 
-pub fn line(input: &[u8]) -> IResult<&[u8], (&[u8], &[u8])> {
-    // is_not(CRLF) is a hack, it means "is not CR or LF"
-    // and not "is not CRLF". In other words, it continues while
-    // it does not encounter 0x0D or 0x0A.
-    pair(is_not(ascii::CRLF), obs_crlf)(input)
-}
-
 /// ```abnf
 /// fold_line = any *(1*(crlf WS) any) crlf
 /// ```
diff --git a/src/text/words.rs b/src/text/words.rs
index 6e19aaa..8cd2ce8 100644
--- a/src/text/words.rs
+++ b/src/text/words.rs
@@ -90,6 +90,7 @@ pub fn dot_atom_text(input: &[u8]) -> IResult<&[u8], &[u8]> {
 /// dot-atom
 ///
 /// `[CFWS] dot-atom-text [CFWS]`
+#[allow(dead_code)]
 pub fn dot_atom(input: &[u8]) -> IResult<&[u8], &[u8]> {
     delimited(opt(cfws), dot_atom_text, opt(cfws))(input)
 }