diff --git a/serde_test/src/assert.rs b/serde_test/src/assert.rs
index fc33f282..499330e1 100644
--- a/serde_test/src/assert.rs
+++ b/serde_test/src/assert.rs
@@ -8,7 +8,7 @@ use token::Token;
 use std::fmt::Debug;
 
 /// Runs both `assert_ser_tokens` and `assert_de_tokens`.
-pub fn assert_tokens<'de, T>(value: &T, tokens: &[Token<'static>])
+pub fn assert_tokens<'de, T>(value: &T, tokens: &[Token])
     where T: Serialize + Deserialize<'de> + PartialEq + Debug
 {
     assert_ser_tokens(value, tokens);
@@ -35,7 +35,7 @@ pub fn assert_ser_tokens_error<T>(value: &T, tokens: &[Token], error: Error)
 }
 
 /// Asserts that the given `tokens` deserialize into `value`.
-pub fn assert_de_tokens<'de, T>(value: &T, tokens: &[Token<'static>])
+pub fn assert_de_tokens<'de, T>(value: &T, tokens: &[Token])
     where T: Deserialize<'de> + PartialEq + Debug
 {
     let mut de = Deserializer::new(tokens.to_vec().into_iter());
@@ -45,7 +45,7 @@ pub fn assert_de_tokens<'de, T>(value: &T, tokens: &[Token<'static>])
 }
 
 /// Asserts that the given `tokens` yield `error` when deserializing.
-pub fn assert_de_tokens_error<'de, T>(tokens: &[Token<'static>], error: Error)
+pub fn assert_de_tokens_error<'de, T>(tokens: &[Token], error: Error)
     where T: Deserialize<'de> + PartialEq + Debug
 {
     let mut de = Deserializer::new(tokens.to_vec().into_iter());
diff --git a/serde_test/src/de.rs b/serde_test/src/de.rs
index 2ec45f46..d2441ac1 100644
--- a/serde_test/src/de.rs
+++ b/serde_test/src/de.rs
@@ -9,13 +9,13 @@ use token::Token;
 
 /// A `Deserializer` that reads from a list of tokens.
 pub struct Deserializer<I>
-    where I: Iterator<Item = Token<'static>>
+    where I: Iterator<Item = Token>
 {
     tokens: iter::Peekable<I>,
 }
 
 impl<I> Deserializer<I>
-    where I: Iterator<Item = Token<'static>>
+    where I: Iterator<Item = Token>
 {
     /// Creates the deserializer.
     pub fn new(tokens: I) -> Deserializer<I> {
@@ -23,7 +23,7 @@ impl<I> Deserializer<I>
     }
 
     /// Pulls the next token off of the deserializer, ignoring it.
-    pub fn next_token(&mut self) -> Option<Token<'static>> {
+    pub fn next_token(&mut self) -> Option<Token> {
         self.tokens.next()
     }
 
@@ -43,8 +43,8 @@ impl<I> Deserializer<I>
 
     fn visit_seq<'de, V>(&mut self,
                     len: Option<usize>,
-                    sep: Token<'static>,
-                    end: Token<'static>,
+                    sep: Token,
+                    end: Token,
                     visitor: V)
                     -> Result<V::Value, Error>
         where V: Visitor<'de>
@@ -61,8 +61,8 @@ impl<I> Deserializer<I>
 
     fn visit_map<'de, V>(&mut self,
                     len: Option<usize>,
-                    sep: Token<'static>,
-                    end: Token<'static>,
+                    sep: Token,
+                    end: Token,
                     visitor: V)
                     -> Result<V::Value, Error>
         where V: Visitor<'de>
@@ -79,7 +79,7 @@ impl<I> Deserializer<I>
 }
 
 impl<'de, 'a, I> de::Deserializer<'de> for &'a mut Deserializer<I>
-    where I: Iterator<Item = Token<'static>>
+    where I: Iterator<Item = Token>
 {
     type Error = Error;
 
@@ -106,10 +106,10 @@ impl<'de, 'a, I> de::Deserializer<'de> for &'a mut Deserializer<I>
             Some(Token::Char(v)) => visitor.visit_char(v),
             Some(Token::Str(v)) => visitor.visit_str(v),
             Some(Token::BorrowedStr(v)) => visitor.visit_borrowed_str(v),
-            Some(Token::String(v)) => visitor.visit_string(v),
+            Some(Token::String(v)) => visitor.visit_string(v.to_owned()),
             Some(Token::Bytes(v)) => visitor.visit_bytes(v),
             Some(Token::BorrowedBytes(v)) => visitor.visit_borrowed_bytes(v),
-            Some(Token::ByteBuf(v)) => visitor.visit_byte_buf(v),
+            Some(Token::ByteBuf(v)) => visitor.visit_byte_buf(v.to_vec()),
             Some(Token::Option(false)) => visitor.visit_none(),
             Some(Token::Option(true)) => visitor.visit_some(self),
             Some(Token::Unit) => visitor.visit_unit(),
@@ -354,16 +354,16 @@ impl<'de, 'a, I> de::Deserializer<'de> for &'a mut Deserializer<I>
 //////////////////////////////////////////////////////////////////////////
 
 struct DeserializerSeqVisitor<'a, I: 'a>
-    where I: Iterator<Item = Token<'static>>
+    where I: Iterator<Item = Token>
 {
     de: &'a mut Deserializer<I>,
     len: Option<usize>,
-    sep: Token<'static>,
-    end: Token<'static>,
+    sep: Token,
+    end: Token,
 }
 
 impl<'de, 'a, I> SeqVisitor<'de> for DeserializerSeqVisitor<'a, I>
-    where I: Iterator<Item = Token<'static>>
+    where I: Iterator<Item = Token>
 {
     type Error = Error;
 
@@ -392,16 +392,16 @@ impl<'de, 'a, I> SeqVisitor<'de> for DeserializerSeqVisitor<'a, I>
 //////////////////////////////////////////////////////////////////////////
 
 struct DeserializerMapVisitor<'a, I: 'a>
-    where I: Iterator<Item = Token<'static>>
+    where I: Iterator<Item = Token>
 {
     de: &'a mut Deserializer<I>,
     len: Option<usize>,
-    sep: Token<'static>,
-    end: Token<'static>,
+    sep: Token,
+    end: Token,
 }
 
 impl<'de, 'a, I> MapVisitor<'de> for DeserializerMapVisitor<'a, I>
-    where I: Iterator<Item = Token<'static>>
+    where I: Iterator<Item = Token>
 {
     type Error = Error;
 
@@ -436,13 +436,13 @@ impl<'de, 'a, I> MapVisitor<'de> for DeserializerMapVisitor<'a, I>
 //////////////////////////////////////////////////////////////////////////
 
 struct DeserializerEnumVisitor<'a, I: 'a>
-    where I: Iterator<Item = Token<'static>>
+    where I: Iterator<Item = Token>
 {
     de: &'a mut Deserializer<I>,
 }
 
 impl<'de, 'a, I> EnumVisitor<'de> for DeserializerEnumVisitor<'a, I>
-    where I: Iterator<Item = Token<'static>>
+    where I: Iterator<Item = Token>
 {
     type Error = Error;
     type Variant = Self;
@@ -469,7 +469,7 @@ impl<'de, 'a, I> EnumVisitor<'de> for DeserializerEnumVisitor<'a, I>
 }
 
 impl<'de, 'a, I> VariantVisitor<'de> for DeserializerEnumVisitor<'a, I>
-    where I: Iterator<Item = Token<'static>>
+    where I: Iterator<Item = Token>
 {
     type Error = Error;
 
@@ -558,14 +558,14 @@ impl<'de, 'a, I> VariantVisitor<'de> for DeserializerEnumVisitor<'a, I>
 //////////////////////////////////////////////////////////////////////////
 
 struct EnumMapVisitor<'a, I: 'a>
-    where I: Iterator<Item = Token<'static>>
+    where I: Iterator<Item = Token>
 {
     de: &'a mut Deserializer<I>,
     variant: Option<&'a str>,
 }
 
 impl<'a, I: 'a> EnumMapVisitor<'a, I>
-    where I: Iterator<Item = Token<'static>>
+    where I: Iterator<Item = Token>
 {
     fn new(de: &'a mut Deserializer<I>, variant: &'a str) -> Self {
         EnumMapVisitor {
@@ -576,7 +576,7 @@ impl<'a, I: 'a> EnumMapVisitor<'a, I>
 }
 
 impl<'de, 'a, I: 'a> MapVisitor<'de> for EnumMapVisitor<'a, I>
-    where I: Iterator<Item = Token<'static>>
+    where I: Iterator<Item = Token>
 {
     type Error = Error;
 
diff --git a/serde_test/src/error.rs b/serde_test/src/error.rs
index 507cfd46..2cf5161f 100644
--- a/serde_test/src/error.rs
+++ b/serde_test/src/error.rs
@@ -15,7 +15,7 @@ pub enum Error {
     InvalidName(&'static str),
 
     /// `Serialize` generated a token that didn't match the test.
-    UnexpectedToken(Token<'static>),
+    UnexpectedToken(Token),
 
     /// The expected token list was too short.
     EndOfTokens,
diff --git a/serde_test/src/ser.rs b/serde_test/src/ser.rs
index 93608a19..c38b1a04 100644
--- a/serde_test/src/ser.rs
+++ b/serde_test/src/ser.rs
@@ -7,14 +7,14 @@ use token::Token;
 
 /// A `Serializer` that ensures that a value serializes to a given list of tokens.
 pub struct Serializer<'a, I>
-    where I: Iterator<Item = &'a Token<'a>>
+    where I: Iterator<Item = &'a Token>
 {
     tokens: I,
-    phantom: PhantomData<&'a Token<'a>>,
+    phantom: PhantomData<&'a Token>,
 }
 
 impl<'a, I> Serializer<'a, I>
-    where I: Iterator<Item = &'a Token<'a>>
+    where I: Iterator<Item = &'a Token>
 {
     /// Creates the serializer.
     pub fn new(tokens: I) -> Serializer<'a, I> {
@@ -25,13 +25,27 @@ impl<'a, I> Serializer<'a, I>
     }
 
     /// Pulls the next token off of the serializer, ignoring it.
-    pub fn next_token(&mut self) -> Option<&'a Token<'a>> {
+    pub fn next_token(&mut self) -> Option<&'a Token> {
         self.tokens.next()
     }
 }
 
+macro_rules! assert_next_token {
+    ($self:ident, $expected:ident($arg:expr)) => {
+        match $self.tokens.next() {
+            Some(&Token::$expected(v)) if v == $arg => {}
+            Some(other) => {
+                panic!("expected {}({:?}) but serialized as {:?}", stringify!($expected), $arg, other);
+            }
+            None => {
+                panic!("expected {}({:?}) after end of serialized tokens", stringify!($expected), $arg);
+            }
+        }
+    }
+}
+
 impl<'s, 'a, I> ser::Serializer for &'s mut Serializer<'a, I>
-    where I: Iterator<Item = &'a Token<'a>>
+    where I: Iterator<Item = &'a Token>
 {
     type Ok = ();
     type Error = Error;
@@ -105,12 +119,12 @@ impl<'s, 'a, I> ser::Serializer for &'s mut Serializer<'a, I>
     }
 
     fn serialize_str(self, v: &str) -> Result<(), Error> {
-        assert_eq!(self.tokens.next(), Some(&Token::Str(v)));
+        assert_next_token!(self, Str(v));
         Ok(())
     }
 
     fn serialize_bytes(self, value: &[u8]) -> Result<(), Self::Error> {
-        assert_eq!(self.tokens.next(), Some(&Token::Bytes(value)));
+        assert_next_token!(self, Bytes(value));
         Ok(())
     }
 
@@ -119,15 +133,15 @@ impl<'s, 'a, I> ser::Serializer for &'s mut Serializer<'a, I>
         Ok(())
     }
 
-    fn serialize_unit_struct(self, name: &str) -> Result<(), Error> {
+    fn serialize_unit_struct(self, name: &'static str) -> Result<(), Error> {
         assert_eq!(self.tokens.next(), Some(&Token::UnitStruct(name)));
         Ok(())
     }
 
     fn serialize_unit_variant(self,
-                              name: &str,
+                              name: &'static str,
                               _variant_index: usize,
-                              variant: &str)
+                              variant: &'static str)
                               -> Result<(), Error> {
         assert_eq!(self.tokens.next(), Some(&Token::EnumUnit(name, variant)));
         Ok(())
@@ -141,9 +155,9 @@ impl<'s, 'a, I> ser::Serializer for &'s mut Serializer<'a, I>
     }
 
     fn serialize_newtype_variant<T: ?Sized>(self,
-                                            name: &str,
+                                            name: &'static str,
                                             _variant_index: usize,
-                                            variant: &str,
+                                            variant: &'static str,
                                             value: &T)
                                             -> Result<(), Error>
         where T: Serialize
@@ -186,9 +200,9 @@ impl<'s, 'a, I> ser::Serializer for &'s mut Serializer<'a, I>
     }
 
     fn serialize_tuple_variant(self,
-                               name: &str,
+                               name: &'static str,
                                _variant_index: usize,
-                               variant: &str,
+                               variant: &'static str,
                                len: usize)
                                -> Result<Self, Error> {
         assert_eq!(self.tokens.next(),
@@ -201,15 +215,15 @@ impl<'s, 'a, I> ser::Serializer for &'s mut Serializer<'a, I>
         Ok(self)
     }
 
-    fn serialize_struct(self, name: &str, len: usize) -> Result<Self, Error> {
+    fn serialize_struct(self, name: &'static str, len: usize) -> Result<Self, Error> {
         assert_eq!(self.tokens.next(), Some(&Token::StructStart(name, len)));
         Ok(self)
     }
 
     fn serialize_struct_variant(self,
-                                name: &str,
+                                name: &'static str,
                                 _variant_index: usize,
-                                variant: &str,
+                                variant: &'static str,
                                 len: usize)
                                 -> Result<Self, Error> {
         assert_eq!(self.tokens.next(),
@@ -219,7 +233,7 @@ impl<'s, 'a, I> ser::Serializer for &'s mut Serializer<'a, I>
 }
 
 impl<'s, 'a, I> ser::SerializeSeq for &'s mut Serializer<'a, I>
-    where I: Iterator<Item = &'a Token<'a>>
+    where I: Iterator<Item = &'a Token>
 {
     type Ok = ();
     type Error = Error;
@@ -238,7 +252,7 @@ impl<'s, 'a, I> ser::SerializeSeq for &'s mut Serializer<'a, I>
 }
 
 impl<'s, 'a, I> ser::SerializeTuple for &'s mut Serializer<'a, I>
-    where I: Iterator<Item = &'a Token<'a>>
+    where I: Iterator<Item = &'a Token>
 {
     type Ok = ();
     type Error = Error;
@@ -257,7 +271,7 @@ impl<'s, 'a, I> ser::SerializeTuple for &'s mut Serializer<'a, I>
 }
 
 impl<'s, 'a, I> ser::SerializeTupleStruct for &'s mut Serializer<'a, I>
-    where I: Iterator<Item = &'a Token<'a>>
+    where I: Iterator<Item = &'a Token>
 {
     type Ok = ();
     type Error = Error;
@@ -276,7 +290,7 @@ impl<'s, 'a, I> ser::SerializeTupleStruct for &'s mut Serializer<'a, I>
 }
 
 impl<'s, 'a, I> ser::SerializeTupleVariant for &'s mut Serializer<'a, I>
-    where I: Iterator<Item = &'a Token<'a>>
+    where I: Iterator<Item = &'a Token>
 {
     type Ok = ();
     type Error = Error;
@@ -295,7 +309,7 @@ impl<'s, 'a, I> ser::SerializeTupleVariant for &'s mut Serializer<'a, I>
 }
 
 impl<'s, 'a, I> ser::SerializeMap for &'s mut Serializer<'a, I>
-    where I: Iterator<Item = &'a Token<'a>>
+    where I: Iterator<Item = &'a Token>
 {
     type Ok = ();
     type Error = Error;
@@ -320,7 +334,7 @@ impl<'s, 'a, I> ser::SerializeMap for &'s mut Serializer<'a, I>
 }
 
 impl<'s, 'a, I> ser::SerializeStruct for &'s mut Serializer<'a, I>
-    where I: Iterator<Item = &'a Token<'a>>
+    where I: Iterator<Item = &'a Token>
 {
     type Ok = ();
     type Error = Error;
@@ -343,7 +357,7 @@ impl<'s, 'a, I> ser::SerializeStruct for &'s mut Serializer<'a, I>
 }
 
 impl<'s, 'a, I> ser::SerializeStructVariant for &'s mut Serializer<'a, I>
-    where I: Iterator<Item = &'a Token<'a>>
+    where I: Iterator<Item = &'a Token>
 {
     type Ok = ();
     type Error = Error;
diff --git a/serde_test/src/token.rs b/serde_test/src/token.rs
index 05e15583..7cc9bbdd 100644
--- a/serde_test/src/token.rs
+++ b/serde_test/src/token.rs
@@ -1,5 +1,5 @@
-#[derive(Clone, PartialEq, Debug)]
-pub enum Token<'a> {
+#[derive(Copy, Clone, PartialEq, Debug)]
+pub enum Token {
     /// A serialized `bool`.
     Bool(bool),
 
@@ -37,22 +37,22 @@ pub enum Token<'a> {
     Char(char),
 
     /// A serialized `str`.
-    Str(&'a str),
+    Str(&'static str),
 
     /// A borrowed `str`.
-    BorrowedStr(&'a str),
+    BorrowedStr(&'static str),
 
     /// A serialized `String`.
-    String(String),
+    String(&'static str),
 
     /// A serialized `[u8]`
-    Bytes(&'a [u8]),
+    Bytes(&'static [u8]),
 
     /// A borrowed `[u8]`.
-    BorrowedBytes(&'a [u8]),
+    BorrowedBytes(&'static [u8]),
 
     /// A serialized `ByteBuf`
-    ByteBuf(Vec<u8>),
+    ByteBuf(&'static [u8]),
 
     /// The header to a serialized `Option<T>`.
     ///
@@ -64,13 +64,13 @@ pub enum Token<'a> {
     Unit,
 
     /// A serialized unit struct of the given name.
-    UnitStruct(&'a str),
+    UnitStruct(&'static str),
 
     /// The header to a serialized newtype struct of the given name.
     ///
     /// Newtype structs are serialized with this header, followed by the value contained in the
     /// newtype struct.
-    StructNewType(&'a str),
+    StructNewType(&'static str),
 
     /// The header to an enum of the given name.
     ///
@@ -79,19 +79,19 @@ pub enum Token<'a> {
     /// `assert_tokens` will fail if this token is used.
     ///
     /// TODO: Trash this.
-    EnumStart(&'a str),
+    EnumStart(&'static str),
 
     /// A unit variant of an enum of the given name, of the given name.
     ///
     /// The first string represents the name of the enum, and the second represents the name of the
     /// variant.
-    EnumUnit(&'a str, &'a str),
+    EnumUnit(&'static str, &'static str),
 
     /// The header to a newtype variant of an enum of the given name, of the given name.
     ///
     /// The first string represents the name of the enum, and the second represents the name of the
     /// variant. The value contained within this enum works the same as `StructNewType`.
-    EnumNewType(&'a str, &'a str),
+    EnumNewType(&'static str, &'static str),
 
     /// The header to a sequence of the given length.
     ///
@@ -123,7 +123,7 @@ pub enum Token<'a> {
     TupleEnd,
 
     /// The header to a tuple struct of the given name and length.
-    TupleStructStart(&'a str, usize),
+    TupleStructStart(&'static str, usize),
 
     /// A separator, similar to `TupleSep`.
     TupleStructSep,
@@ -147,7 +147,7 @@ pub enum Token<'a> {
     MapEnd,
 
     /// The header of a struct of the given name and length, similar to `MapStart`.
-    StructStart(&'a str, usize),
+    StructStart(&'static str, usize),
 
     /// A separator, similar to `MapSep`.
     StructSep,
@@ -156,7 +156,7 @@ pub enum Token<'a> {
     StructEnd,
 
     /// The header to a tuple variant of an enum of the given name, of the given name and length.
-    EnumSeqStart(&'a str, &'a str, usize),
+    EnumSeqStart(&'static str, &'static str, usize),
 
     /// A separator, similar to `TupleSep`.
     EnumSeqSep,
@@ -166,7 +166,7 @@ pub enum Token<'a> {
 
     /// The header of a struct variant of an enum of the given name, of the given name and length,
     /// similar to `StructStart`.
-    EnumMapStart(&'a str, &'a str, usize),
+    EnumMapStart(&'static str, &'static str, usize),
 
     /// A separator, similar to `StructSep`.
     EnumMapSep,
diff --git a/test_suite/tests/test_borrow.rs b/test_suite/tests/test_borrow.rs
index dd75f70b..f57ebb9c 100644
--- a/test_suite/tests/test_borrow.rs
+++ b/test_suite/tests/test_borrow.rs
@@ -28,7 +28,7 @@ fn test_borrowed_str() {
 fn test_borrowed_str_from_string() {
     assert_de_tokens_error::<&str>(
         &[
-            Token::String("borrowed".to_owned()),
+            Token::String("borrowed"),
         ],
         Error::Message("invalid type: string \"borrowed\", expected a borrowed string".to_owned()),
     );
@@ -68,7 +68,7 @@ fn test_borrowed_bytes() {
 fn test_borrowed_bytes_from_bytebuf() {
     assert_de_tokens_error::<&[u8]>(
         &[
-            Token::ByteBuf(b"borrowed".to_vec()),
+            Token::ByteBuf(b"borrowed"),
         ],
         Error::Message("invalid type: byte array, expected a borrowed byte array".to_owned()),
     );
diff --git a/test_suite/tests/test_bytes.rs b/test_suite/tests/test_bytes.rs
index 28e47d1b..f4ae59dc 100644
--- a/test_suite/tests/test_bytes.rs
+++ b/test_suite/tests/test_bytes.rs
@@ -18,9 +18,9 @@ fn test_bytes() {
 fn test_byte_buf() {
     let empty = ByteBuf::new();
     assert_tokens(&empty, &[Token::Bytes(b"")]);
-    assert_de_tokens(&empty, &[Token::ByteBuf(Vec::new())]);
+    assert_de_tokens(&empty, &[Token::ByteBuf(b"")]);
     assert_de_tokens(&empty, &[Token::Str("")]);
-    assert_de_tokens(&empty, &[Token::String(String::new())]);
+    assert_de_tokens(&empty, &[Token::String("")]);
     assert_de_tokens(&empty, &[
         Token::SeqStart(None),
         Token::SeqEnd,
@@ -32,9 +32,9 @@ fn test_byte_buf() {
 
     let buf = ByteBuf::from(vec![65, 66, 67]);
     assert_tokens(&buf, &[Token::Bytes(b"ABC")]);
-    assert_de_tokens(&buf, &[Token::ByteBuf(vec![65, 66, 67])]);
+    assert_de_tokens(&buf, &[Token::ByteBuf(b"ABC")]);
     assert_de_tokens(&buf, &[Token::Str("ABC")]);
-    assert_de_tokens(&buf, &[Token::String("ABC".to_owned())]);
+    assert_de_tokens(&buf, &[Token::String("ABC")]);
     assert_de_tokens(&buf, &[
         Token::SeqStart(None),
         Token::SeqSep,
diff --git a/test_suite/tests/test_de.rs b/test_suite/tests/test_de.rs
index 8d21844c..daeaa4cb 100644
--- a/test_suite/tests/test_de.rs
+++ b/test_suite/tests/test_de.rs
@@ -137,7 +137,7 @@ macro_rules! declare_error_tests {
     }
 }
 
-fn assert_de_tokens_ignore(ignorable_tokens: &[Token<'static>]) {
+fn assert_de_tokens_ignore(ignorable_tokens: &[Token]) {
     #[derive(PartialEq, Debug, Deserialize)]
     struct IgnoreBase {
         a: i32,
@@ -147,7 +147,7 @@ fn assert_de_tokens_ignore(ignorable_tokens: &[Token<'static>]) {
 
     // Embed the tokens to be ignored in the normal token
     // stream for an IgnoreBase type
-    let concated_tokens : Vec<Token<'static>> = vec![
+    let concated_tokens : Vec<Token> = vec![
             Token::MapStart(Some(2)),
                 Token::MapSep,
                 Token::Str("a"),
@@ -215,11 +215,11 @@ declare_tests! {
     test_char {
         'a' => &[Token::Char('a')],
         'a' => &[Token::Str("a")],
-        'a' => &[Token::String("a".to_owned())],
+        'a' => &[Token::String("a")],
     }
     test_string {
         "abc".to_owned() => &[Token::Str("abc")],
-        "abc".to_owned() => &[Token::String("abc".to_owned())],
+        "abc".to_owned() => &[Token::String("abc")],
         "a".to_owned() => &[Token::Char('a')],
     }
     test_option {
@@ -767,7 +767,7 @@ declare_tests! {
 
                 Token::StructSep,
                 Token::Str("b"),
-                Token::String("overwritten".to_string()),
+                Token::String("overwritten"),
             Token::StructEnd,
         ],
         StructDefault { a: 100, b: "default".to_string() } => &[
@@ -903,7 +903,7 @@ declare_tests! {
     }
     test_path_buf {
         PathBuf::from("/usr/local/lib") => &[
-            Token::String("/usr/local/lib".to_owned()),
+            Token::String("/usr/local/lib"),
         ],
     }
     test_cstring {