Deleted vendor folder

1 files changed, 0 insertions, 3071 deletions

diff --git a/vendor/serde/src/de/impls.rs b/vendor/serde/src/de/impls.rs
deleted file mode 100644
index 413c997..0000000
--- a/vendor/serde/src/de/impls.rs
+++ /dev/null
@@ -1,3071 +0,0 @@
-use crate::lib::*;
-
-use crate::de::{
-    Deserialize, Deserializer, EnumAccess, Error, MapAccess, SeqAccess, Unexpected, VariantAccess,
-    Visitor,
-};
-
-use crate::seed::InPlaceSeed;
-
-#[cfg(any(feature = "std", feature = "alloc"))]
-use crate::de::size_hint;
-
-////////////////////////////////////////////////////////////////////////////////
-
-struct UnitVisitor;
-
-impl<'de> Visitor<'de> for UnitVisitor {
-    type Value = ();
-
-    fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        formatter.write_str("unit")
-    }
-
-    fn visit_unit<E>(self) -> Result<Self::Value, E>
-    where
-        E: Error,
-    {
-        Ok(())
-    }
-}
-
-impl<'de> Deserialize<'de> for () {
-    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-    where
-        D: Deserializer<'de>,
-    {
-        deserializer.deserialize_unit(UnitVisitor)
-    }
-}
-
-#[cfg(feature = "unstable")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "unstable")))]
-impl<'de> Deserialize<'de> for ! {
-    fn deserialize<D>(_deserializer: D) -> Result<Self, D::Error>
-    where
-        D: Deserializer<'de>,
-    {
-        Err(Error::custom("cannot deserialize `!`"))
-    }
-}
-
-////////////////////////////////////////////////////////////////////////////////
-
-struct BoolVisitor;
-
-impl<'de> Visitor<'de> for BoolVisitor {
-    type Value = bool;
-
-    fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        formatter.write_str("a boolean")
-    }
-
-    fn visit_bool<E>(self, v: bool) -> Result<Self::Value, E>
-    where
-        E: Error,
-    {
-        Ok(v)
-    }
-}
-
-impl<'de> Deserialize<'de> for bool {
-    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-    where
-        D: Deserializer<'de>,
-    {
-        deserializer.deserialize_bool(BoolVisitor)
-    }
-}
-
-////////////////////////////////////////////////////////////////////////////////
-
-macro_rules! impl_deserialize_num {
-    ($primitive:ident, $nonzero:ident $(cfg($($cfg:tt)*))*, $deserialize:ident $($method:ident!($($val:ident : $visit:ident)*);)*) => {
-        impl_deserialize_num!($primitive, $deserialize $($method!($($val : $visit)*);)*);
-
-        $(#[cfg($($cfg)*)])*
-        impl<'de> Deserialize<'de> for num::$nonzero {
-            fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-            where
-                D: Deserializer<'de>,
-            {
-                struct NonZeroVisitor;
-
-                impl<'de> Visitor<'de> for NonZeroVisitor {
-                    type Value = num::$nonzero;
-
-                    fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-                        formatter.write_str(concat!("a nonzero ", stringify!($primitive)))
-                    }
-
-                    $($($method!(nonzero $primitive $val : $visit);)*)*
-                }
-
-                deserializer.$deserialize(NonZeroVisitor)
-            }
-        }
-    };
-
-    ($primitive:ident, $deserialize:ident $($method:ident!($($val:ident : $visit:ident)*);)*) => {
-        impl<'de> Deserialize<'de> for $primitive {
-            #[inline]
-            fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-            where
-                D: Deserializer<'de>,
-            {
-                struct PrimitiveVisitor;
-
-                impl<'de> Visitor<'de> for PrimitiveVisitor {
-                    type Value = $primitive;
-
-                    fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-                        formatter.write_str(stringify!($primitive))
-                    }
-
-                    $($($method!($val : $visit);)*)*
-                }
-
-                deserializer.$deserialize(PrimitiveVisitor)
-            }
-        }
-    };
-}
-
-macro_rules! num_self {
-    ($ty:ident : $visit:ident) => {
-        #[inline]
-        fn $visit<E>(self, v: $ty) -> Result<Self::Value, E>
-        where
-            E: Error,
-        {
-            Ok(v)
-        }
-    };
-
-    (nonzero $primitive:ident $ty:ident : $visit:ident) => {
-        fn $visit<E>(self, v: $ty) -> Result<Self::Value, E>
-        where
-            E: Error,
-        {
-            if let Some(nonzero) = Self::Value::new(v) {
-                Ok(nonzero)
-            } else {
-                Err(Error::invalid_value(Unexpected::Unsigned(0), &self))
-            }
-        }
-    };
-}
-
-macro_rules! num_as_self {
-    ($ty:ident : $visit:ident) => {
-        #[inline]
-        fn $visit<E>(self, v: $ty) -> Result<Self::Value, E>
-        where
-            E: Error,
-        {
-            Ok(v as Self::Value)
-        }
-    };
-
-    (nonzero $primitive:ident $ty:ident : $visit:ident) => {
-        fn $visit<E>(self, v: $ty) -> Result<Self::Value, E>
-        where
-            E: Error,
-        {
-            if let Some(nonzero) = Self::Value::new(v as $primitive) {
-                Ok(nonzero)
-            } else {
-                Err(Error::invalid_value(Unexpected::Unsigned(0), &self))
-            }
-        }
-    };
-}
-
-macro_rules! num_as_copysign_self {
-    ($ty:ident : $visit:ident) => {
-        #[inline]
-        fn $visit<E>(self, v: $ty) -> Result<Self::Value, E>
-        where
-            E: Error,
-        {
-            #[cfg(any(no_float_copysign, not(feature = "std")))]
-            {
-                Ok(v as Self::Value)
-            }
-
-            #[cfg(all(not(no_float_copysign), feature = "std"))]
-            {
-                // Preserve sign of NaN. The `as` produces a nondeterministic sign.
-                let sign = if v.is_sign_positive() { 1.0 } else { -1.0 };
-                Ok((v as Self::Value).copysign(sign))
-            }
-        }
-    };
-}
-
-macro_rules! int_to_int {
-    ($ty:ident : $visit:ident) => {
-        #[inline]
-        fn $visit<E>(self, v: $ty) -> Result<Self::Value, E>
-        where
-            E: Error,
-        {
-            if Self::Value::min_value() as i64 <= v as i64
-                && v as i64 <= Self::Value::max_value() as i64
-            {
-                Ok(v as Self::Value)
-            } else {
-                Err(Error::invalid_value(Unexpected::Signed(v as i64), &self))
-            }
-        }
-    };
-
-    (nonzero $primitive:ident $ty:ident : $visit:ident) => {
-        fn $visit<E>(self, v: $ty) -> Result<Self::Value, E>
-        where
-            E: Error,
-        {
-            if $primitive::min_value() as i64 <= v as i64
-                && v as i64 <= $primitive::max_value() as i64
-            {
-                if let Some(nonzero) = Self::Value::new(v as $primitive) {
-                    return Ok(nonzero);
-                }
-            }
-            Err(Error::invalid_value(Unexpected::Signed(v as i64), &self))
-        }
-    };
-}
-
-macro_rules! int_to_uint {
-    ($ty:ident : $visit:ident) => {
-        #[inline]
-        fn $visit<E>(self, v: $ty) -> Result<Self::Value, E>
-        where
-            E: Error,
-        {
-            if 0 <= v && v as u64 <= Self::Value::max_value() as u64 {
-                Ok(v as Self::Value)
-            } else {
-                Err(Error::invalid_value(Unexpected::Signed(v as i64), &self))
-            }
-        }
-    };
-
-    (nonzero $primitive:ident $ty:ident : $visit:ident) => {
-        fn $visit<E>(self, v: $ty) -> Result<Self::Value, E>
-        where
-            E: Error,
-        {
-            if 0 < v && v as u64 <= $primitive::max_value() as u64 {
-                if let Some(nonzero) = Self::Value::new(v as $primitive) {
-                    return Ok(nonzero);
-                }
-            }
-            Err(Error::invalid_value(Unexpected::Signed(v as i64), &self))
-        }
-    };
-}
-
-macro_rules! uint_to_self {
-    ($ty:ident : $visit:ident) => {
-        #[inline]
-        fn $visit<E>(self, v: $ty) -> Result<Self::Value, E>
-        where
-            E: Error,
-        {
-            if v as u64 <= Self::Value::max_value() as u64 {
-                Ok(v as Self::Value)
-            } else {
-                Err(Error::invalid_value(Unexpected::Unsigned(v as u64), &self))
-            }
-        }
-    };
-
-    (nonzero $primitive:ident $ty:ident : $visit:ident) => {
-        fn $visit<E>(self, v: $ty) -> Result<Self::Value, E>
-        where
-            E: Error,
-        {
-            if v as u64 <= $primitive::max_value() as u64 {
-                if let Some(nonzero) = Self::Value::new(v as $primitive) {
-                    return Ok(nonzero);
-                }
-            }
-            Err(Error::invalid_value(Unexpected::Unsigned(v as u64), &self))
-        }
-    };
-}
-
-impl_deserialize_num! {
-    i8, NonZeroI8 cfg(not(no_num_nonzero_signed)), deserialize_i8
-    num_self!(i8:visit_i8);
-    int_to_int!(i16:visit_i16 i32:visit_i32 i64:visit_i64);
-    uint_to_self!(u8:visit_u8 u16:visit_u16 u32:visit_u32 u64:visit_u64);
-}
-
-impl_deserialize_num! {
-    i16, NonZeroI16 cfg(not(no_num_nonzero_signed)), deserialize_i16
-    num_self!(i16:visit_i16);
-    num_as_self!(i8:visit_i8);
-    int_to_int!(i32:visit_i32 i64:visit_i64);
-    uint_to_self!(u8:visit_u8 u16:visit_u16 u32:visit_u32 u64:visit_u64);
-}
-
-impl_deserialize_num! {
-    i32, NonZeroI32 cfg(not(no_num_nonzero_signed)), deserialize_i32
-    num_self!(i32:visit_i32);
-    num_as_self!(i8:visit_i8 i16:visit_i16);
-    int_to_int!(i64:visit_i64);
-    uint_to_self!(u8:visit_u8 u16:visit_u16 u32:visit_u32 u64:visit_u64);
-}
-
-impl_deserialize_num! {
-    i64, NonZeroI64 cfg(not(no_num_nonzero_signed)), deserialize_i64
-    num_self!(i64:visit_i64);
-    num_as_self!(i8:visit_i8 i16:visit_i16 i32:visit_i32);
-    uint_to_self!(u8:visit_u8 u16:visit_u16 u32:visit_u32 u64:visit_u64);
-}
-
-impl_deserialize_num! {
-    isize, NonZeroIsize cfg(not(no_num_nonzero_signed)), deserialize_i64
-    num_as_self!(i8:visit_i8 i16:visit_i16);
-    int_to_int!(i32:visit_i32 i64:visit_i64);
-    uint_to_self!(u8:visit_u8 u16:visit_u16 u32:visit_u32 u64:visit_u64);
-}
-
-impl_deserialize_num! {
-    u8, NonZeroU8, deserialize_u8
-    num_self!(u8:visit_u8);
-    int_to_uint!(i8:visit_i8 i16:visit_i16 i32:visit_i32 i64:visit_i64);
-    uint_to_self!(u16:visit_u16 u32:visit_u32 u64:visit_u64);
-}
-
-impl_deserialize_num! {
-    u16, NonZeroU16, deserialize_u16
-    num_self!(u16:visit_u16);
-    num_as_self!(u8:visit_u8);
-    int_to_uint!(i8:visit_i8 i16:visit_i16 i32:visit_i32 i64:visit_i64);
-    uint_to_self!(u32:visit_u32 u64:visit_u64);
-}
-
-impl_deserialize_num! {
-    u32, NonZeroU32, deserialize_u32
-    num_self!(u32:visit_u32);
-    num_as_self!(u8:visit_u8 u16:visit_u16);
-    int_to_uint!(i8:visit_i8 i16:visit_i16 i32:visit_i32 i64:visit_i64);
-    uint_to_self!(u64:visit_u64);
-}
-
-impl_deserialize_num! {
-    u64, NonZeroU64, deserialize_u64
-    num_self!(u64:visit_u64);
-    num_as_self!(u8:visit_u8 u16:visit_u16 u32:visit_u32);
-    int_to_uint!(i8:visit_i8 i16:visit_i16 i32:visit_i32 i64:visit_i64);
-}
-
-impl_deserialize_num! {
-    usize, NonZeroUsize, deserialize_u64
-    num_as_self!(u8:visit_u8 u16:visit_u16);
-    int_to_uint!(i8:visit_i8 i16:visit_i16 i32:visit_i32 i64:visit_i64);
-    uint_to_self!(u32:visit_u32 u64:visit_u64);
-}
-
-impl_deserialize_num! {
-    f32, deserialize_f32
-    num_self!(f32:visit_f32);
-    num_as_copysign_self!(f64:visit_f64);
-    num_as_self!(i8:visit_i8 i16:visit_i16 i32:visit_i32 i64:visit_i64);
-    num_as_self!(u8:visit_u8 u16:visit_u16 u32:visit_u32 u64:visit_u64);
-}
-
-impl_deserialize_num! {
-    f64, deserialize_f64
-    num_self!(f64:visit_f64);
-    num_as_copysign_self!(f32:visit_f32);
-    num_as_self!(i8:visit_i8 i16:visit_i16 i32:visit_i32 i64:visit_i64);
-    num_as_self!(u8:visit_u8 u16:visit_u16 u32:visit_u32 u64:visit_u64);
-}
-
-macro_rules! num_128 {
-    ($ty:ident : $visit:ident) => {
-        fn $visit<E>(self, v: $ty) -> Result<Self::Value, E>
-        where
-            E: Error,
-        {
-            if v as i128 >= Self::Value::min_value() as i128
-                && v as u128 <= Self::Value::max_value() as u128
-            {
-                Ok(v as Self::Value)
-            } else {
-                Err(Error::invalid_value(
-                    Unexpected::Other(stringify!($ty)),
-                    &self,
-                ))
-            }
-        }
-    };
-
-    (nonzero $primitive:ident $ty:ident : $visit:ident) => {
-        fn $visit<E>(self, v: $ty) -> Result<Self::Value, E>
-        where
-            E: Error,
-        {
-            if v as i128 >= $primitive::min_value() as i128
-                && v as u128 <= $primitive::max_value() as u128
-            {
-                if let Some(nonzero) = Self::Value::new(v as $primitive) {
-                    Ok(nonzero)
-                } else {
-                    Err(Error::invalid_value(Unexpected::Unsigned(0), &self))
-                }
-            } else {
-                Err(Error::invalid_value(
-                    Unexpected::Other(stringify!($ty)),
-                    &self,
-                ))
-            }
-        }
-    };
-}
-
-impl_deserialize_num! {
-    i128, NonZeroI128 cfg(not(no_num_nonzero_signed)), deserialize_i128
-    num_self!(i128:visit_i128);
-    num_as_self!(i8:visit_i8 i16:visit_i16 i32:visit_i32 i64:visit_i64);
-    num_as_self!(u8:visit_u8 u16:visit_u16 u32:visit_u32 u64:visit_u64);
-    num_128!(u128:visit_u128);
-}
-
-impl_deserialize_num! {
-    u128, NonZeroU128, deserialize_u128
-    num_self!(u128:visit_u128);
-    num_as_self!(u8:visit_u8 u16:visit_u16 u32:visit_u32 u64:visit_u64);
-    int_to_uint!(i8:visit_i8 i16:visit_i16 i32:visit_i32 i64:visit_i64);
-    num_128!(i128:visit_i128);
-}
-
-////////////////////////////////////////////////////////////////////////////////
-
-struct CharVisitor;
-
-impl<'de> Visitor<'de> for CharVisitor {
-    type Value = char;
-
-    fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        formatter.write_str("a character")
-    }
-
-    #[inline]
-    fn visit_char<E>(self, v: char) -> Result<Self::Value, E>
-    where
-        E: Error,
-    {
-        Ok(v)
-    }
-
-    #[inline]
-    fn visit_str<E>(self, v: &str) -> Result<Self::Value, E>
-    where
-        E: Error,
-    {
-        let mut iter = v.chars();
-        match (iter.next(), iter.next()) {
-            (Some(c), None) => Ok(c),
-            _ => Err(Error::invalid_value(Unexpected::Str(v), &self)),
-        }
-    }
-}
-
-impl<'de> Deserialize<'de> for char {
-    #[inline]
-    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-    where
-        D: Deserializer<'de>,
-    {
-        deserializer.deserialize_char(CharVisitor)
-    }
-}
-
-////////////////////////////////////////////////////////////////////////////////
-
-#[cfg(any(feature = "std", feature = "alloc"))]
-struct StringVisitor;
-#[cfg(any(feature = "std", feature = "alloc"))]
-struct StringInPlaceVisitor<'a>(&'a mut String);
-
-#[cfg(any(feature = "std", feature = "alloc"))]
-impl<'de> Visitor<'de> for StringVisitor {
-    type Value = String;
-
-    fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        formatter.write_str("a string")
-    }
-
-    fn visit_str<E>(self, v: &str) -> Result<Self::Value, E>
-    where
-        E: Error,
-    {
-        Ok(v.to_owned())
-    }
-
-    fn visit_string<E>(self, v: String) -> Result<Self::Value, E>
-    where
-        E: Error,
-    {
-        Ok(v)
-    }
-
-    fn visit_bytes<E>(self, v: &[u8]) -> Result<Self::Value, E>
-    where
-        E: Error,
-    {
-        match str::from_utf8(v) {
-            Ok(s) => Ok(s.to_owned()),
-            Err(_) => Err(Error::invalid_value(Unexpected::Bytes(v), &self)),
-        }
-    }
-
-    fn visit_byte_buf<E>(self, v: Vec<u8>) -> Result<Self::Value, E>
-    where
-        E: Error,
-    {
-        match String::from_utf8(v) {
-            Ok(s) => Ok(s),
-            Err(e) => Err(Error::invalid_value(
-                Unexpected::Bytes(&e.into_bytes()),
-                &self,
-            )),
-        }
-    }
-}
-
-#[cfg(any(feature = "std", feature = "alloc"))]
-impl<'a, 'de> Visitor<'de> for StringInPlaceVisitor<'a> {
-    type Value = ();
-
-    fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        formatter.write_str("a string")
-    }
-
-    fn visit_str<E>(self, v: &str) -> Result<Self::Value, E>
-    where
-        E: Error,
-    {
-        self.0.clear();
-        self.0.push_str(v);
-        Ok(())
-    }
-
-    fn visit_string<E>(self, v: String) -> Result<Self::Value, E>
-    where
-        E: Error,
-    {
-        *self.0 = v;
-        Ok(())
-    }
-
-    fn visit_bytes<E>(self, v: &[u8]) -> Result<Self::Value, E>
-    where
-        E: Error,
-    {
-        match str::from_utf8(v) {
-            Ok(s) => {
-                self.0.clear();
-                self.0.push_str(s);
-                Ok(())
-            }
-            Err(_) => Err(Error::invalid_value(Unexpected::Bytes(v), &self)),
-        }
-    }
-
-    fn visit_byte_buf<E>(self, v: Vec<u8>) -> Result<Self::Value, E>
-    where
-        E: Error,
-    {
-        match String::from_utf8(v) {
-            Ok(s) => {
-                *self.0 = s;
-                Ok(())
-            }
-            Err(e) => Err(Error::invalid_value(
-                Unexpected::Bytes(&e.into_bytes()),
-                &self,
-            )),
-        }
-    }
-}
-
-#[cfg(any(feature = "std", feature = "alloc"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "std", feature = "alloc"))))]
-impl<'de> Deserialize<'de> for String {
-    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-    where
-        D: Deserializer<'de>,
-    {
-        deserializer.deserialize_string(StringVisitor)
-    }
-
-    fn deserialize_in_place<D>(deserializer: D, place: &mut Self) -> Result<(), D::Error>
-    where
-        D: Deserializer<'de>,
-    {
-        deserializer.deserialize_string(StringInPlaceVisitor(place))
-    }
-}
-
-////////////////////////////////////////////////////////////////////////////////
-
-struct StrVisitor;
-
-impl<'a> Visitor<'a> for StrVisitor {
-    type Value = &'a str;
-
-    fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        formatter.write_str("a borrowed string")
-    }
-
-    fn visit_borrowed_str<E>(self, v: &'a str) -> Result<Self::Value, E>
-    where
-        E: Error,
-    {
-        Ok(v) // so easy
-    }
-
-    fn visit_borrowed_bytes<E>(self, v: &'a [u8]) -> Result<Self::Value, E>
-    where
-        E: Error,
-    {
-        str::from_utf8(v).map_err(|_| Error::invalid_value(Unexpected::Bytes(v), &self))
-    }
-}
-
-impl<'de: 'a, 'a> Deserialize<'de> for &'a str {
-    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-    where
-        D: Deserializer<'de>,
-    {
-        deserializer.deserialize_str(StrVisitor)
-    }
-}
-
-////////////////////////////////////////////////////////////////////////////////
-
-struct BytesVisitor;
-
-impl<'a> Visitor<'a> for BytesVisitor {
-    type Value = &'a [u8];
-
-    fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        formatter.write_str("a borrowed byte array")
-    }
-
-    fn visit_borrowed_bytes<E>(self, v: &'a [u8]) -> Result<Self::Value, E>
-    where
-        E: Error,
-    {
-        Ok(v)
-    }
-
-    fn visit_borrowed_str<E>(self, v: &'a str) -> Result<Self::Value, E>
-    where
-        E: Error,
-    {
-        Ok(v.as_bytes())
-    }
-}
-
-impl<'de: 'a, 'a> Deserialize<'de> for &'a [u8] {
-    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-    where
-        D: Deserializer<'de>,
-    {
-        deserializer.deserialize_bytes(BytesVisitor)
-    }
-}
-
-////////////////////////////////////////////////////////////////////////////////
-
-#[cfg(any(feature = "std", all(not(no_core_cstr), feature = "alloc")))]
-struct CStringVisitor;
-
-#[cfg(any(feature = "std", all(not(no_core_cstr), feature = "alloc")))]
-impl<'de> Visitor<'de> for CStringVisitor {
-    type Value = CString;
-
-    fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        formatter.write_str("byte array")
-    }
-
-    fn visit_seq<A>(self, mut seq: A) -> Result<Self::Value, A::Error>
-    where
-        A: SeqAccess<'de>,
-    {
-        let capacity = size_hint::cautious::<u8>(seq.size_hint());
-        let mut values = Vec::<u8>::with_capacity(capacity);
-
-        while let Some(value) = tri!(seq.next_element()) {
-            values.push(value);
-        }
-
-        CString::new(values).map_err(Error::custom)
-    }
-
-    fn visit_bytes<E>(self, v: &[u8]) -> Result<Self::Value, E>
-    where
-        E: Error,
-    {
-        CString::new(v).map_err(Error::custom)
-    }
-
-    fn visit_byte_buf<E>(self, v: Vec<u8>) -> Result<Self::Value, E>
-    where
-        E: Error,
-    {
-        CString::new(v).map_err(Error::custom)
-    }
-
-    fn visit_str<E>(self, v: &str) -> Result<Self::Value, E>
-    where
-        E: Error,
-    {
-        CString::new(v).map_err(Error::custom)
-    }
-
-    fn visit_string<E>(self, v: String) -> Result<Self::Value, E>
-    where
-        E: Error,
-    {
-        CString::new(v).map_err(Error::custom)
-    }
-}
-
-#[cfg(any(feature = "std", all(not(no_core_cstr), feature = "alloc")))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "std", feature = "alloc"))))]
-impl<'de> Deserialize<'de> for CString {
-    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-    where
-        D: Deserializer<'de>,
-    {
-        deserializer.deserialize_byte_buf(CStringVisitor)
-    }
-}
-
-macro_rules! forwarded_impl {
-    (
-        $(#[$attr:meta])*
-        ($($id:ident),*), $ty:ty, $func:expr
-    ) => {
-        $(#[$attr])*
-        impl<'de $(, $id : Deserialize<'de>,)*> Deserialize<'de> for $ty {
-            fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-            where
-                D: Deserializer<'de>,
-            {
-                Deserialize::deserialize(deserializer).map($func)
-            }
-        }
-    }
-}
-
-forwarded_impl! {
-    #[cfg(any(feature = "std", all(not(no_core_cstr), feature = "alloc")))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "std", feature = "alloc"))))]
-    (), Box<CStr>, CString::into_boxed_c_str
-}
-
-forwarded_impl! {
-    (T), Reverse<T>, Reverse
-}
-
-////////////////////////////////////////////////////////////////////////////////
-
-struct OptionVisitor<T> {
-    marker: PhantomData<T>,
-}
-
-impl<'de, T> Visitor<'de> for OptionVisitor<T>
-where
-    T: Deserialize<'de>,
-{
-    type Value = Option<T>;
-
-    fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        formatter.write_str("option")
-    }
-
-    #[inline]
-    fn visit_unit<E>(self) -> Result<Self::Value, E>
-    where
-        E: Error,
-    {
-        Ok(None)
-    }
-
-    #[inline]
-    fn visit_none<E>(self) -> Result<Self::Value, E>
-    where
-        E: Error,
-    {
-        Ok(None)
-    }
-
-    #[inline]
-    fn visit_some<D>(self, deserializer: D) -> Result<Self::Value, D::Error>
-    where
-        D: Deserializer<'de>,
-    {
-        T::deserialize(deserializer).map(Some)
-    }
-
-    fn __private_visit_untagged_option<D>(self, deserializer: D) -> Result<Self::Value, ()>
-    where
-        D: Deserializer<'de>,
-    {
-        Ok(T::deserialize(deserializer).ok())
-    }
-}
-
-impl<'de, T> Deserialize<'de> for Option<T>
-where
-    T: Deserialize<'de>,
-{
-    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-    where
-        D: Deserializer<'de>,
-    {
-        deserializer.deserialize_option(OptionVisitor {
-            marker: PhantomData,
-        })
-    }
-
-    // The Some variant's repr is opaque, so we can't play cute tricks with its
-    // tag to have deserialize_in_place build the content in place unconditionally.
-    //
-    // FIXME: investigate whether branching on the old value being Some to
-    // deserialize_in_place the value is profitable (probably data-dependent?)
-}
-
-////////////////////////////////////////////////////////////////////////////////
-
-struct PhantomDataVisitor<T: ?Sized> {
-    marker: PhantomData<T>,
-}
-
-impl<'de, T: ?Sized> Visitor<'de> for PhantomDataVisitor<T> {
-    type Value = PhantomData<T>;
-
-    fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        formatter.write_str("unit")
-    }
-
-    #[inline]
-    fn visit_unit<E>(self) -> Result<Self::Value, E>
-    where
-        E: Error,
-    {
-        Ok(PhantomData)
-    }
-}
-
-impl<'de, T: ?Sized> Deserialize<'de> for PhantomData<T> {
-    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-    where
-        D: Deserializer<'de>,
-    {
-        let visitor = PhantomDataVisitor {
-            marker: PhantomData,
-        };
-        deserializer.deserialize_unit_struct("PhantomData", visitor)
-    }
-}
-
-////////////////////////////////////////////////////////////////////////////////
-
-macro_rules! seq_impl {
-    (
-        $(#[$attr:meta])*
-        $ty:ident <T $(: $tbound1:ident $(+ $tbound2:ident)*)* $(, $typaram:ident : $bound1:ident $(+ $bound2:ident)*)*>,
-        $access:ident,
-        $clear:expr,
-        $with_capacity:expr,
-        $reserve:expr,
-        $insert:expr
-    ) => {
-        $(#[$attr])*
-        impl<'de, T $(, $typaram)*> Deserialize<'de> for $ty<T $(, $typaram)*>
-        where
-            T: Deserialize<'de> $(+ $tbound1 $(+ $tbound2)*)*,
-            $($typaram: $bound1 $(+ $bound2)*,)*
-        {
-            fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-            where
-                D: Deserializer<'de>,
-            {
-                struct SeqVisitor<T $(, $typaram)*> {
-                    marker: PhantomData<$ty<T $(, $typaram)*>>,
-                }
-
-                impl<'de, T $(, $typaram)*> Visitor<'de> for SeqVisitor<T $(, $typaram)*>
-                where
-                    T: Deserialize<'de> $(+ $tbound1 $(+ $tbound2)*)*,
-                    $($typaram: $bound1 $(+ $bound2)*,)*
-                {
-                    type Value = $ty<T $(, $typaram)*>;
-
-                    fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-                        formatter.write_str("a sequence")
-                    }
-
-                    #[inline]
-                    fn visit_seq<A>(self, mut $access: A) -> Result<Self::Value, A::Error>
-                    where
-                        A: SeqAccess<'de>,
-                    {
-                        let mut values = $with_capacity;
-
-                        while let Some(value) = tri!($access.next_element()) {
-                            $insert(&mut values, value);
-                        }
-
-                        Ok(values)
-                    }
-                }
-
-                let visitor = SeqVisitor { marker: PhantomData };
-                deserializer.deserialize_seq(visitor)
-            }
-
-            fn deserialize_in_place<D>(deserializer: D, place: &mut Self) -> Result<(), D::Error>
-            where
-                D: Deserializer<'de>,
-            {
-                struct SeqInPlaceVisitor<'a, T: 'a $(, $typaram: 'a)*>(&'a mut $ty<T $(, $typaram)*>);
-
-                impl<'a, 'de, T $(, $typaram)*> Visitor<'de> for SeqInPlaceVisitor<'a, T $(, $typaram)*>
-                where
-                    T: Deserialize<'de> $(+ $tbound1 $(+ $tbound2)*)*,
-                    $($typaram: $bound1 $(+ $bound2)*,)*
-                {
-                    type Value = ();
-
-                    fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-                        formatter.write_str("a sequence")
-                    }
-
-                    #[inline]
-                    fn visit_seq<A>(mut self, mut $access: A) -> Result<Self::Value, A::Error>
-                    where
-                        A: SeqAccess<'de>,
-                    {
-                        $clear(&mut self.0);
-                        $reserve(&mut self.0, size_hint::cautious::<T>($access.size_hint()));
-
-                        // FIXME: try to overwrite old values here? (Vec, VecDeque, LinkedList)
-                        while let Some(value) = tri!($access.next_element()) {
-                            $insert(&mut self.0, value);
-                        }
-
-                        Ok(())
-                    }
-                }
-
-                deserializer.deserialize_seq(SeqInPlaceVisitor(place))
-            }
-        }
-    }
-}
-
-// Dummy impl of reserve
-#[cfg(any(feature = "std", feature = "alloc"))]
-fn nop_reserve<T>(_seq: T, _n: usize) {}
-
-seq_impl!(
-    #[cfg(any(feature = "std", feature = "alloc"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "std", feature = "alloc"))))]
-    BinaryHeap<T: Ord>,
-    seq,
-    BinaryHeap::clear,
-    BinaryHeap::with_capacity(size_hint::cautious::<T>(seq.size_hint())),
-    BinaryHeap::reserve,
-    BinaryHeap::push
-);
-
-seq_impl!(
-    #[cfg(any(feature = "std", feature = "alloc"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "std", feature = "alloc"))))]
-    BTreeSet<T: Eq + Ord>,
-    seq,
-    BTreeSet::clear,
-    BTreeSet::new(),
-    nop_reserve,
-    BTreeSet::insert
-);
-
-seq_impl!(
-    #[cfg(any(feature = "std", feature = "alloc"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "std", feature = "alloc"))))]
-    LinkedList<T>,
-    seq,
-    LinkedList::clear,
-    LinkedList::new(),
-    nop_reserve,
-    LinkedList::push_back
-);
-
-seq_impl!(
-    #[cfg(feature = "std")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "std")))]
-    HashSet<T: Eq + Hash, S: BuildHasher + Default>,
-    seq,
-    HashSet::clear,
-    HashSet::with_capacity_and_hasher(size_hint::cautious::<T>(seq.size_hint()), S::default()),
-    HashSet::reserve,
-    HashSet::insert
-);
-
-seq_impl!(
-    #[cfg(any(feature = "std", feature = "alloc"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "std", feature = "alloc"))))]
-    VecDeque<T>,
-    seq,
-    VecDeque::clear,
-    VecDeque::with_capacity(size_hint::cautious::<T>(seq.size_hint())),
-    VecDeque::reserve,
-    VecDeque::push_back
-);
-
-////////////////////////////////////////////////////////////////////////////////
-
-#[cfg(any(feature = "std", feature = "alloc"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "std", feature = "alloc"))))]
-impl<'de, T> Deserialize<'de> for Vec<T>
-where
-    T: Deserialize<'de>,
-{
-    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-    where
-        D: Deserializer<'de>,
-    {
-        struct VecVisitor<T> {
-            marker: PhantomData<T>,
-        }
-
-        impl<'de, T> Visitor<'de> for VecVisitor<T>
-        where
-            T: Deserialize<'de>,
-        {
-            type Value = Vec<T>;
-
-            fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-                formatter.write_str("a sequence")
-            }
-
-            fn visit_seq<A>(self, mut seq: A) -> Result<Self::Value, A::Error>
-            where
-                A: SeqAccess<'de>,
-            {
-                let capacity = size_hint::cautious::<T>(seq.size_hint());
-                let mut values = Vec::<T>::with_capacity(capacity);
-
-                while let Some(value) = tri!(seq.next_element()) {
-                    values.push(value);
-                }
-
-                Ok(values)
-            }
-        }
-
-        let visitor = VecVisitor {
-            marker: PhantomData,
-        };
-        deserializer.deserialize_seq(visitor)
-    }
-
-    fn deserialize_in_place<D>(deserializer: D, place: &mut Self) -> Result<(), D::Error>
-    where
-        D: Deserializer<'de>,
-    {
-        struct VecInPlaceVisitor<'a, T: 'a>(&'a mut Vec<T>);
-
-        impl<'a, 'de, T> Visitor<'de> for VecInPlaceVisitor<'a, T>
-        where
-            T: Deserialize<'de>,
-        {
-            type Value = ();
-
-            fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-                formatter.write_str("a sequence")
-            }
-
-            fn visit_seq<A>(self, mut seq: A) -> Result<Self::Value, A::Error>
-            where
-                A: SeqAccess<'de>,
-            {
-                let hint = size_hint::cautious::<T>(seq.size_hint());
-                if let Some(additional) = hint.checked_sub(self.0.len()) {
-                    self.0.reserve(additional);
-                }
-
-                for i in 0..self.0.len() {
-                    let next = {
-                        let next_place = InPlaceSeed(&mut self.0[i]);
-                        tri!(seq.next_element_seed(next_place))
-                    };
-                    if next.is_none() {
-                        self.0.truncate(i);
-                        return Ok(());
-                    }
-                }
-
-                while let Some(value) = tri!(seq.next_element()) {
-                    self.0.push(value);
-                }
-
-                Ok(())
-            }
-        }
-
-        deserializer.deserialize_seq(VecInPlaceVisitor(place))
-    }
-}
-
-////////////////////////////////////////////////////////////////////////////////
-
-struct ArrayVisitor<A> {
-    marker: PhantomData<A>,
-}
-struct ArrayInPlaceVisitor<'a, A: 'a>(&'a mut A);
-
-impl<A> ArrayVisitor<A> {
-    fn new() -> Self {
-        ArrayVisitor {
-            marker: PhantomData,
-        }
-    }
-}
-
-impl<'de, T> Visitor<'de> for ArrayVisitor<[T; 0]> {
-    type Value = [T; 0];
-
-    fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        formatter.write_str("an empty array")
-    }
-
-    #[inline]
-    fn visit_seq<A>(self, _: A) -> Result<Self::Value, A::Error>
-    where
-        A: SeqAccess<'de>,
-    {
-        Ok([])
-    }
-}
-
-// Does not require T: Deserialize<'de>.
-impl<'de, T> Deserialize<'de> for [T; 0] {
-    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-    where
-        D: Deserializer<'de>,
-    {
-        deserializer.deserialize_tuple(0, ArrayVisitor::<[T; 0]>::new())
-    }
-}
-
-macro_rules! array_impls {
-    ($($len:expr => ($($n:tt)+))+) => {
-        $(
-            impl<'de, T> Visitor<'de> for ArrayVisitor<[T; $len]>
-            where
-                T: Deserialize<'de>,
-            {
-                type Value = [T; $len];
-
-                fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-                    formatter.write_str(concat!("an array of length ", $len))
-                }
-
-                #[inline]
-                fn visit_seq<A>(self, mut seq: A) -> Result<Self::Value, A::Error>
-                where
-                    A: SeqAccess<'de>,
-                {
-                    Ok([$(
-                        match tri!(seq.next_element()) {
-                            Some(val) => val,
-                            None => return Err(Error::invalid_length($n, &self)),
-                        }
-                    ),+])
-                }
-            }
-
-            impl<'a, 'de, T> Visitor<'de> for ArrayInPlaceVisitor<'a, [T; $len]>
-            where
-                T: Deserialize<'de>,
-            {
-                type Value = ();
-
-                fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-                    formatter.write_str(concat!("an array of length ", $len))
-                }
-
-                #[inline]
-                fn visit_seq<A>(self, mut seq: A) -> Result<Self::Value, A::Error>
-                where
-                    A: SeqAccess<'de>,
-                {
-                    let mut fail_idx = None;
-                    for (idx, dest) in self.0[..].iter_mut().enumerate() {
-                        if tri!(seq.next_element_seed(InPlaceSeed(dest))).is_none() {
-                            fail_idx = Some(idx);
-                            break;
-                        }
-                    }
-                    if let Some(idx) = fail_idx {
-                        return Err(Error::invalid_length(idx, &self));
-                    }
-                    Ok(())
-                }
-            }
-
-            impl<'de, T> Deserialize<'de> for [T; $len]
-            where
-                T: Deserialize<'de>,
-            {
-                fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-                where
-                    D: Deserializer<'de>,
-                {
-                    deserializer.deserialize_tuple($len, ArrayVisitor::<[T; $len]>::new())
-                }
-
-                fn deserialize_in_place<D>(deserializer: D, place: &mut Self) -> Result<(), D::Error>
-                where
-                    D: Deserializer<'de>,
-                {
-                    deserializer.deserialize_tuple($len, ArrayInPlaceVisitor(place))
-                }
-            }
-        )+
-    }
-}
-
-array_impls! {
-    1 => (0)
-    2 => (0 1)
-    3 => (0 1 2)
-    4 => (0 1 2 3)
-    5 => (0 1 2 3 4)
-    6 => (0 1 2 3 4 5)
-    7 => (0 1 2 3 4 5 6)
-    8 => (0 1 2 3 4 5 6 7)
-    9 => (0 1 2 3 4 5 6 7 8)
-    10 => (0 1 2 3 4 5 6 7 8 9)
-    11 => (0 1 2 3 4 5 6 7 8 9 10)
-    12 => (0 1 2 3 4 5 6 7 8 9 10 11)
-    13 => (0 1 2 3 4 5 6 7 8 9 10 11 12)
-    14 => (0 1 2 3 4 5 6 7 8 9 10 11 12 13)
-    15 => (0 1 2 3 4 5 6 7 8 9 10 11 12 13 14)
-    16 => (0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15)
-    17 => (0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16)
-    18 => (0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17)
-    19 => (0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18)
-    20 => (0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19)
-    21 => (0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20)
-    22 => (0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21)
-    23 => (0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22)
-    24 => (0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23)
-    25 => (0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24)
-    26 => (0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25)
-    27 => (0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26)
-    28 => (0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27)
-    29 => (0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28)
-    30 => (0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29)
-    31 => (0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30)
-    32 => (0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31)
-}
-
-////////////////////////////////////////////////////////////////////////////////
-
-macro_rules! tuple_impls {
-    ($($len:tt => ($($n:tt $name:ident)+))+) => {
-        $(
-            impl<'de, $($name: Deserialize<'de>),+> Deserialize<'de> for ($($name,)+) {
-                #[inline]
-                fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-                where
-                    D: Deserializer<'de>,
-                {
-                    struct TupleVisitor<$($name,)+> {
-                        marker: PhantomData<($($name,)+)>,
-                    }
-
-                    impl<'de, $($name: Deserialize<'de>),+> Visitor<'de> for TupleVisitor<$($name,)+> {
-                        type Value = ($($name,)+);
-
-                        fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-                            formatter.write_str(concat!("a tuple of size ", $len))
-                        }
-
-                        #[inline]
-                        #[allow(non_snake_case)]
-                        fn visit_seq<A>(self, mut seq: A) -> Result<Self::Value, A::Error>
-                        where
-                            A: SeqAccess<'de>,
-                        {
-                            $(
-                                let $name = match tri!(seq.next_element()) {
-                                    Some(value) => value,
-                                    None => return Err(Error::invalid_length($n, &self)),
-                                };
-                            )+
-
-                            Ok(($($name,)+))
-                        }
-                    }
-
-                    deserializer.deserialize_tuple($len, TupleVisitor { marker: PhantomData })
-                }
-
-                #[inline]
-                fn deserialize_in_place<D>(deserializer: D, place: &mut Self) -> Result<(), D::Error>
-                where
-                    D: Deserializer<'de>,
-                {
-                    struct TupleInPlaceVisitor<'a, $($name: 'a,)+>(&'a mut ($($name,)+));
-
-                    impl<'a, 'de, $($name: Deserialize<'de>),+> Visitor<'de> for TupleInPlaceVisitor<'a, $($name,)+> {
-                        type Value = ();
-
-                        fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-                            formatter.write_str(concat!("a tuple of size ", $len))
-                        }
-
-                        #[inline]
-                        #[allow(non_snake_case)]
-                        fn visit_seq<A>(self, mut seq: A) -> Result<Self::Value, A::Error>
-                        where
-                            A: SeqAccess<'de>,
-                        {
-                            $(
-                                if tri!(seq.next_element_seed(InPlaceSeed(&mut (self.0).$n))).is_none() {
-                                    return Err(Error::invalid_length($n, &self));
-                                }
-                            )+
-
-                            Ok(())
-                        }
-                    }
-
-                    deserializer.deserialize_tuple($len, TupleInPlaceVisitor(place))
-                }
-            }
-        )+
-    }
-}
-
-tuple_impls! {
-    1  => (0 T0)
-    2  => (0 T0 1 T1)
-    3  => (0 T0 1 T1 2 T2)
-    4  => (0 T0 1 T1 2 T2 3 T3)
-    5  => (0 T0 1 T1 2 T2 3 T3 4 T4)
-    6  => (0 T0 1 T1 2 T2 3 T3 4 T4 5 T5)
-    7  => (0 T0 1 T1 2 T2 3 T3 4 T4 5 T5 6 T6)
-    8  => (0 T0 1 T1 2 T2 3 T3 4 T4 5 T5 6 T6 7 T7)
-    9  => (0 T0 1 T1 2 T2 3 T3 4 T4 5 T5 6 T6 7 T7 8 T8)
-    10 => (0 T0 1 T1 2 T2 3 T3 4 T4 5 T5 6 T6 7 T7 8 T8 9 T9)
-    11 => (0 T0 1 T1 2 T2 3 T3 4 T4 5 T5 6 T6 7 T7 8 T8 9 T9 10 T10)
-    12 => (0 T0 1 T1 2 T2 3 T3 4 T4 5 T5 6 T6 7 T7 8 T8 9 T9 10 T10 11 T11)
-    13 => (0 T0 1 T1 2 T2 3 T3 4 T4 5 T5 6 T6 7 T7 8 T8 9 T9 10 T10 11 T11 12 T12)
-    14 => (0 T0 1 T1 2 T2 3 T3 4 T4 5 T5 6 T6 7 T7 8 T8 9 T9 10 T10 11 T11 12 T12 13 T13)
-    15 => (0 T0 1 T1 2 T2 3 T3 4 T4 5 T5 6 T6 7 T7 8 T8 9 T9 10 T10 11 T11 12 T12 13 T13 14 T14)
-    16 => (0 T0 1 T1 2 T2 3 T3 4 T4 5 T5 6 T6 7 T7 8 T8 9 T9 10 T10 11 T11 12 T12 13 T13 14 T14 15 T15)
-}
-
-////////////////////////////////////////////////////////////////////////////////
-
-macro_rules! map_impl {
-    (
-        $(#[$attr:meta])*
-        $ty:ident <K $(: $kbound1:ident $(+ $kbound2:ident)*)*, V $(, $typaram:ident : $bound1:ident $(+ $bound2:ident)*)*>,
-        $access:ident,
-        $with_capacity:expr,
-    ) => {
-        $(#[$attr])*
-        impl<'de, K, V $(, $typaram)*> Deserialize<'de> for $ty<K, V $(, $typaram)*>
-        where
-            K: Deserialize<'de> $(+ $kbound1 $(+ $kbound2)*)*,
-            V: Deserialize<'de>,
-            $($typaram: $bound1 $(+ $bound2)*),*
-        {
-            fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-            where
-                D: Deserializer<'de>,
-            {
-                struct MapVisitor<K, V $(, $typaram)*> {
-                    marker: PhantomData<$ty<K, V $(, $typaram)*>>,
-                }
-
-                impl<'de, K, V $(, $typaram)*> Visitor<'de> for MapVisitor<K, V $(, $typaram)*>
-                where
-                    K: Deserialize<'de> $(+ $kbound1 $(+ $kbound2)*)*,
-                    V: Deserialize<'de>,
-                    $($typaram: $bound1 $(+ $bound2)*),*
-                {
-                    type Value = $ty<K, V $(, $typaram)*>;
-
-                    fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-                        formatter.write_str("a map")
-                    }
-
-                    #[inline]
-                    fn visit_map<A>(self, mut $access: A) -> Result<Self::Value, A::Error>
-                    where
-                        A: MapAccess<'de>,
-                    {
-                        let mut values = $with_capacity;
-
-                        while let Some((key, value)) = tri!($access.next_entry()) {
-                            values.insert(key, value);
-                        }
-
-                        Ok(values)
-                    }
-                }
-
-                let visitor = MapVisitor { marker: PhantomData };
-                deserializer.deserialize_map(visitor)
-            }
-        }
-    }
-}
-
-map_impl! {
-    #[cfg(any(feature = "std", feature = "alloc"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "std", feature = "alloc"))))]
-    BTreeMap<K: Ord, V>,
-    map,
-    BTreeMap::new(),
-}
-
-map_impl! {
-    #[cfg(feature = "std")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "std")))]
-    HashMap<K: Eq + Hash, V, S: BuildHasher + Default>,
-    map,
-    HashMap::with_capacity_and_hasher(size_hint::cautious::<(K, V)>(map.size_hint()), S::default()),
-}
-
-////////////////////////////////////////////////////////////////////////////////
-
-macro_rules! parse_ip_impl {
-    (
-        $(#[$attr:meta])*
-        $ty:ty, $expecting:expr, $size:tt
-    ) => {
-        $(#[$attr])*
-        impl<'de> Deserialize<'de> for $ty {
-            fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-            where
-                D: Deserializer<'de>,
-            {
-                if deserializer.is_human_readable() {
-                    deserializer.deserialize_str(FromStrVisitor::new($expecting))
-                } else {
-                    <[u8; $size]>::deserialize(deserializer).map(<$ty>::from)
-                }
-            }
-        }
-    };
-}
-
-#[cfg(feature = "std")]
-macro_rules! variant_identifier {
-    (
-        $name_kind:ident ($($variant:ident; $bytes:expr; $index:expr),*)
-        $expecting_message:expr,
-        $variants_name:ident
-    ) => {
-        enum $name_kind {
-            $($variant),*
-        }
-
-        static $variants_name: &[&str] = &[$(stringify!($variant)),*];
-
-        impl<'de> Deserialize<'de> for $name_kind {
-            fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-            where
-                D: Deserializer<'de>,
-            {
-                struct KindVisitor;
-
-                impl<'de> Visitor<'de> for KindVisitor {
-                    type Value = $name_kind;
-
-                    fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-                        formatter.write_str($expecting_message)
-                    }
-
-                    fn visit_u64<E>(self, value: u64) -> Result<Self::Value, E>
-                    where
-                        E: Error,
-                    {
-                        match value {
-                            $(
-                                $index => Ok($name_kind :: $variant),
-                            )*
-                            _ => Err(Error::invalid_value(Unexpected::Unsigned(value), &self),),
-                        }
-                    }
-
-                    fn visit_str<E>(self, value: &str) -> Result<Self::Value, E>
-                    where
-                        E: Error,
-                    {
-                        match value {
-                            $(
-                                stringify!($variant) => Ok($name_kind :: $variant),
-                            )*
-                            _ => Err(Error::unknown_variant(value, $variants_name)),
-                        }
-                    }
-
-                    fn visit_bytes<E>(self, value: &[u8]) -> Result<Self::Value, E>
-                    where
-                        E: Error,
-                    {
-                        match value {
-                            $(
-                                $bytes => Ok($name_kind :: $variant),
-                            )*
-                            _ => {
-                                match str::from_utf8(value) {
-                                    Ok(value) => Err(Error::unknown_variant(value, $variants_name)),
-                                    Err(_) => Err(Error::invalid_value(Unexpected::Bytes(value), &self)),
-                                }
-                            }
-                        }
-                    }
-                }
-
-                deserializer.deserialize_identifier(KindVisitor)
-            }
-        }
-    }
-}
-
-#[cfg(feature = "std")]
-macro_rules! deserialize_enum {
-    (
-        $name:ident $name_kind:ident ($($variant:ident; $bytes:expr; $index:expr),*)
-        $expecting_message:expr,
-        $deserializer:expr
-    ) => {
-        variant_identifier! {
-            $name_kind ($($variant; $bytes; $index),*)
-            $expecting_message,
-            VARIANTS
-        }
-
-        struct EnumVisitor;
-        impl<'de> Visitor<'de> for EnumVisitor {
-            type Value = $name;
-
-            fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-                formatter.write_str(concat!("a ", stringify!($name)))
-            }
-
-
-            fn visit_enum<A>(self, data: A) -> Result<Self::Value, A::Error>
-            where
-                A: EnumAccess<'de>,
-            {
-                match tri!(data.variant()) {
-                    $(
-                        ($name_kind :: $variant, v) => v.newtype_variant().map($name :: $variant),
-                    )*
-                }
-            }
-        }
-        $deserializer.deserialize_enum(stringify!($name), VARIANTS, EnumVisitor)
-    }
-}
-
-#[cfg(feature = "std")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "std")))]
-impl<'de> Deserialize<'de> for net::IpAddr {
-    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-    where
-        D: Deserializer<'de>,
-    {
-        if deserializer.is_human_readable() {
-            deserializer.deserialize_str(FromStrVisitor::new("IP address"))
-        } else {
-            use crate::lib::net::IpAddr;
-            deserialize_enum! {
-                IpAddr IpAddrKind (V4; b"V4"; 0, V6; b"V6"; 1)
-                "`V4` or `V6`",
-                deserializer
-            }
-        }
-    }
-}
-
-parse_ip_impl! {
-    #[cfg(feature = "std")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "std")))]
-    net::Ipv4Addr, "IPv4 address", 4
-}
-
-parse_ip_impl! {
-    #[cfg(feature = "std")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "std")))]
-    net::Ipv6Addr, "IPv6 address", 16
-}
-
-macro_rules! parse_socket_impl {
-    (
-        $(#[$attr:meta])*
-        $ty:ty, $expecting:tt,
-        $new:expr,
-    ) => {
-        $(#[$attr])*
-        impl<'de> Deserialize<'de> for $ty {
-            fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-            where
-                D: Deserializer<'de>,
-            {
-                if deserializer.is_human_readable() {
-                    deserializer.deserialize_str(FromStrVisitor::new($expecting))
-                } else {
-                    <(_, u16)>::deserialize(deserializer).map($new)
-                }
-            }
-        }
-    };
-}
-
-#[cfg(feature = "std")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "std")))]
-impl<'de> Deserialize<'de> for net::SocketAddr {
-    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-    where
-        D: Deserializer<'de>,
-    {
-        if deserializer.is_human_readable() {
-            deserializer.deserialize_str(FromStrVisitor::new("socket address"))
-        } else {
-            use crate::lib::net::SocketAddr;
-            deserialize_enum! {
-                SocketAddr SocketAddrKind (V4; b"V4"; 0, V6; b"V6"; 1)
-                "`V4` or `V6`",
-                deserializer
-            }
-        }
-    }
-}
-
-parse_socket_impl! {
-    #[cfg(feature = "std")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "std")))]
-    net::SocketAddrV4, "IPv4 socket address",
-    |(ip, port)| net::SocketAddrV4::new(ip, port),
-}
-
-parse_socket_impl! {
-    #[cfg(feature = "std")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "std")))]
-    net::SocketAddrV6, "IPv6 socket address",
-    |(ip, port)| net::SocketAddrV6::new(ip, port, 0, 0),
-}
-
-////////////////////////////////////////////////////////////////////////////////
-
-#[cfg(feature = "std")]
-struct PathVisitor;
-
-#[cfg(feature = "std")]
-impl<'a> Visitor<'a> for PathVisitor {
-    type Value = &'a Path;
-
-    fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        formatter.write_str("a borrowed path")
-    }
-
-    fn visit_borrowed_str<E>(self, v: &'a str) -> Result<Self::Value, E>
-    where
-        E: Error,
-    {
-        Ok(v.as_ref())
-    }
-
-    fn visit_borrowed_bytes<E>(self, v: &'a [u8]) -> Result<Self::Value, E>
-    where
-        E: Error,
-    {
-        str::from_utf8(v)
-            .map(AsRef::as_ref)
-            .map_err(|_| Error::invalid_value(Unexpected::Bytes(v), &self))
-    }
-}
-
-#[cfg(feature = "std")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "std")))]
-impl<'de: 'a, 'a> Deserialize<'de> for &'a Path {
-    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-    where
-        D: Deserializer<'de>,
-    {
-        deserializer.deserialize_str(PathVisitor)
-    }
-}
-
-#[cfg(feature = "std")]
-struct PathBufVisitor;
-
-#[cfg(feature = "std")]
-impl<'de> Visitor<'de> for PathBufVisitor {
-    type Value = PathBuf;
-
-    fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        formatter.write_str("path string")
-    }
-
-    fn visit_str<E>(self, v: &str) -> Result<Self::Value, E>
-    where
-        E: Error,
-    {
-        Ok(From::from(v))
-    }
-
-    fn visit_string<E>(self, v: String) -> Result<Self::Value, E>
-    where
-        E: Error,
-    {
-        Ok(From::from(v))
-    }
-
-    fn visit_bytes<E>(self, v: &[u8]) -> Result<Self::Value, E>
-    where
-        E: Error,
-    {
-        str::from_utf8(v)
-            .map(From::from)
-            .map_err(|_| Error::invalid_value(Unexpected::Bytes(v), &self))
-    }
-
-    fn visit_byte_buf<E>(self, v: Vec<u8>) -> Result<Self::Value, E>
-    where
-        E: Error,
-    {
-        String::from_utf8(v)
-            .map(From::from)
-            .map_err(|e| Error::invalid_value(Unexpected::Bytes(&e.into_bytes()), &self))
-    }
-}
-
-#[cfg(feature = "std")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "std")))]
-impl<'de> Deserialize<'de> for PathBuf {
-    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-    where
-        D: Deserializer<'de>,
-    {
-        deserializer.deserialize_string(PathBufVisitor)
-    }
-}
-
-forwarded_impl! {
-    #[cfg(feature = "std")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "std")))]
-    (), Box<Path>, PathBuf::into_boxed_path
-}
-
-////////////////////////////////////////////////////////////////////////////////
-
-// If this were outside of the serde crate, it would just use:
-//
-//    #[derive(Deserialize)]
-//    #[serde(variant_identifier)]
-#[cfg(all(feature = "std", any(unix, windows)))]
-variant_identifier! {
-    OsStringKind (Unix; b"Unix"; 0, Windows; b"Windows"; 1)
-    "`Unix` or `Windows`",
-    OSSTR_VARIANTS
-}
-
-#[cfg(all(feature = "std", any(unix, windows)))]
-struct OsStringVisitor;
-
-#[cfg(all(feature = "std", any(unix, windows)))]
-impl<'de> Visitor<'de> for OsStringVisitor {
-    type Value = OsString;
-
-    fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        formatter.write_str("os string")
-    }
-
-    #[cfg(unix)]
-    fn visit_enum<A>(self, data: A) -> Result<Self::Value, A::Error>
-    where
-        A: EnumAccess<'de>,
-    {
-        use std::os::unix::ffi::OsStringExt;
-
-        match tri!(data.variant()) {
-            (OsStringKind::Unix, v) => v.newtype_variant().map(OsString::from_vec),
-            (OsStringKind::Windows, _) => Err(Error::custom(
-                "cannot deserialize Windows OS string on Unix",
-            )),
-        }
-    }
-
-    #[cfg(windows)]
-    fn visit_enum<A>(self, data: A) -> Result<Self::Value, A::Error>
-    where
-        A: EnumAccess<'de>,
-    {
-        use std::os::windows::ffi::OsStringExt;
-
-        match tri!(data.variant()) {
-            (OsStringKind::Windows, v) => v
-                .newtype_variant::<Vec<u16>>()
-                .map(|vec| OsString::from_wide(&vec)),
-            (OsStringKind::Unix, _) => Err(Error::custom(
-                "cannot deserialize Unix OS string on Windows",
-            )),
-        }
-    }
-}
-
-#[cfg(all(feature = "std", any(unix, windows)))]
-#[cfg_attr(doc_cfg, doc(cfg(all(feature = "std", any(unix, windows)))))]
-impl<'de> Deserialize<'de> for OsString {
-    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-    where
-        D: Deserializer<'de>,
-    {
-        deserializer.deserialize_enum("OsString", OSSTR_VARIANTS, OsStringVisitor)
-    }
-}
-
-////////////////////////////////////////////////////////////////////////////////
-
-forwarded_impl! {
-    #[cfg(any(feature = "std", feature = "alloc"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "std", feature = "alloc"))))]
-    (T), Box<T>, Box::new
-}
-
-forwarded_impl! {
-    #[cfg(any(feature = "std", feature = "alloc"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "std", feature = "alloc"))))]
-    (T), Box<[T]>, Vec::into_boxed_slice
-}
-
-forwarded_impl! {
-    #[cfg(any(feature = "std", feature = "alloc"))]
-    #[cfg_attr(doc_cfg, doc(cfg(any(feature = "std", feature = "alloc"))))]
-    (), Box<str>, String::into_boxed_str
-}
-
-forwarded_impl! {
-    #[cfg(all(feature = "std", any(unix, windows)))]
-    #[cfg_attr(doc_cfg, doc(cfg(all(feature = "std", any(unix, windows)))))]
-    (), Box<OsStr>, OsString::into_boxed_os_str
-}
-
-#[cfg(any(feature = "std", feature = "alloc"))]
-#[cfg_attr(doc_cfg, doc(cfg(any(feature = "std", feature = "alloc"))))]
-impl<'de, 'a, T: ?Sized> Deserialize<'de> for Cow<'a, T>
-where
-    T: ToOwned,
-    T::Owned: Deserialize<'de>,
-{
-    #[inline]
-    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-    where
-        D: Deserializer<'de>,
-    {
-        T::Owned::deserialize(deserializer).map(Cow::Owned)
-    }
-}
-
-////////////////////////////////////////////////////////////////////////////////
-
-/// This impl requires the [`"rc"`] Cargo feature of Serde. The resulting
-/// `Weak<T>` has a reference count of 0 and cannot be upgraded.
-///
-/// [`"rc"`]: https://serde.rs/feature-flags.html#-features-rc
-#[cfg(all(feature = "rc", any(feature = "std", feature = "alloc")))]
-#[cfg_attr(
-    doc_cfg,
-    doc(cfg(all(feature = "rc", any(feature = "std", feature = "alloc"))))
-)]
-impl<'de, T: ?Sized> Deserialize<'de> for RcWeak<T>
-where
-    T: Deserialize<'de>,
-{
-    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-    where
-        D: Deserializer<'de>,
-    {
-        tri!(Option::<T>::deserialize(deserializer));
-        Ok(RcWeak::new())
-    }
-}
-
-/// This impl requires the [`"rc"`] Cargo feature of Serde. The resulting
-/// `Weak<T>` has a reference count of 0 and cannot be upgraded.
-///
-/// [`"rc"`]: https://serde.rs/feature-flags.html#-features-rc
-#[cfg(all(feature = "rc", any(feature = "std", feature = "alloc")))]
-#[cfg_attr(
-    doc_cfg,
-    doc(cfg(all(feature = "rc", any(feature = "std", feature = "alloc"))))
-)]
-impl<'de, T: ?Sized> Deserialize<'de> for ArcWeak<T>
-where
-    T: Deserialize<'de>,
-{
-    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-    where
-        D: Deserializer<'de>,
-    {
-        tri!(Option::<T>::deserialize(deserializer));
-        Ok(ArcWeak::new())
-    }
-}
-
-////////////////////////////////////////////////////////////////////////////////
-
-macro_rules! box_forwarded_impl {
-    (
-        $(#[$attr:meta])*
-        $t:ident
-    ) => {
-        $(#[$attr])*
-        impl<'de, T: ?Sized> Deserialize<'de> for $t<T>
-        where
-            Box<T>: Deserialize<'de>,
-        {
-            fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-            where
-                D: Deserializer<'de>,
-            {
-                Box::deserialize(deserializer).map(Into::into)
-            }
-        }
-    };
-}
-
-box_forwarded_impl! {
-    /// This impl requires the [`"rc"`] Cargo feature of Serde.
-    ///
-    /// Deserializing a data structure containing `Rc` will not attempt to
-    /// deduplicate `Rc` references to the same data. Every deserialized `Rc`
-    /// will end up with a strong count of 1.
-    ///
-    /// [`"rc"`]: https://serde.rs/feature-flags.html#-features-rc
-    #[cfg(all(feature = "rc", any(feature = "std", feature = "alloc")))]
-    #[cfg_attr(doc_cfg, doc(cfg(all(feature = "rc", any(feature = "std", feature = "alloc")))))]
-    Rc
-}
-
-box_forwarded_impl! {
-    /// This impl requires the [`"rc"`] Cargo feature of Serde.
-    ///
-    /// Deserializing a data structure containing `Arc` will not attempt to
-    /// deduplicate `Arc` references to the same data. Every deserialized `Arc`
-    /// will end up with a strong count of 1.
-    ///
-    /// [`"rc"`]: https://serde.rs/feature-flags.html#-features-rc
-    #[cfg(all(feature = "rc", any(feature = "std", feature = "alloc")))]
-    #[cfg_attr(doc_cfg, doc(cfg(all(feature = "rc", any(feature = "std", feature = "alloc")))))]
-    Arc
-}
-
-////////////////////////////////////////////////////////////////////////////////
-
-impl<'de, T> Deserialize<'de> for Cell<T>
-where
-    T: Deserialize<'de> + Copy,
-{
-    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-    where
-        D: Deserializer<'de>,
-    {
-        T::deserialize(deserializer).map(Cell::new)
-    }
-}
-
-forwarded_impl! {
-    (T), RefCell<T>, RefCell::new
-}
-
-forwarded_impl! {
-    #[cfg(feature = "std")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "std")))]
-    (T), Mutex<T>, Mutex::new
-}
-
-forwarded_impl! {
-    #[cfg(feature = "std")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "std")))]
-    (T), RwLock<T>, RwLock::new
-}
-
-////////////////////////////////////////////////////////////////////////////////
-
-// This is a cleaned-up version of the impl generated by:
-//
-//     #[derive(Deserialize)]
-//     #[serde(deny_unknown_fields)]
-//     struct Duration {
-//         secs: u64,
-//         nanos: u32,
-//     }
-impl<'de> Deserialize<'de> for Duration {
-    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-    where
-        D: Deserializer<'de>,
-    {
-        // If this were outside of the serde crate, it would just use:
-        //
-        //    #[derive(Deserialize)]
-        //    #[serde(field_identifier, rename_all = "lowercase")]
-        enum Field {
-            Secs,
-            Nanos,
-        }
-
-        impl<'de> Deserialize<'de> for Field {
-            fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-            where
-                D: Deserializer<'de>,
-            {
-                struct FieldVisitor;
-
-                impl<'de> Visitor<'de> for FieldVisitor {
-                    type Value = Field;
-
-                    fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-                        formatter.write_str("`secs` or `nanos`")
-                    }
-
-                    fn visit_str<E>(self, value: &str) -> Result<Self::Value, E>
-                    where
-                        E: Error,
-                    {
-                        match value {
-                            "secs" => Ok(Field::Secs),
-                            "nanos" => Ok(Field::Nanos),
-                            _ => Err(Error::unknown_field(value, FIELDS)),
-                        }
-                    }
-
-                    fn visit_bytes<E>(self, value: &[u8]) -> Result<Self::Value, E>
-                    where
-                        E: Error,
-                    {
-                        match value {
-                            b"secs" => Ok(Field::Secs),
-                            b"nanos" => Ok(Field::Nanos),
-                            _ => {
-                                let value = crate::__private::from_utf8_lossy(value);
-                                Err(Error::unknown_field(&*value, FIELDS))
-                            }
-                        }
-                    }
-                }
-
-                deserializer.deserialize_identifier(FieldVisitor)
-            }
-        }
-
-        fn check_overflow<E>(secs: u64, nanos: u32) -> Result<(), E>
-        where
-            E: Error,
-        {
-            static NANOS_PER_SEC: u32 = 1_000_000_000;
-            match secs.checked_add((nanos / NANOS_PER_SEC) as u64) {
-                Some(_) => Ok(()),
-                None => Err(E::custom("overflow deserializing Duration")),
-            }
-        }
-
-        struct DurationVisitor;
-
-        impl<'de> Visitor<'de> for DurationVisitor {
-            type Value = Duration;
-
-            fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-                formatter.write_str("struct Duration")
-            }
-
-            fn visit_seq<A>(self, mut seq: A) -> Result<Self::Value, A::Error>
-            where
-                A: SeqAccess<'de>,
-            {
-                let secs: u64 = match tri!(seq.next_element()) {
-                    Some(value) => value,
-                    None => {
-                        return Err(Error::invalid_length(0, &self));
-                    }
-                };
-                let nanos: u32 = match tri!(seq.next_element()) {
-                    Some(value) => value,
-                    None => {
-                        return Err(Error::invalid_length(1, &self));
-                    }
-                };
-                tri!(check_overflow(secs, nanos));
-                Ok(Duration::new(secs, nanos))
-            }
-
-            fn visit_map<A>(self, mut map: A) -> Result<Self::Value, A::Error>
-            where
-                A: MapAccess<'de>,
-            {
-                let mut secs: Option<u64> = None;
-                let mut nanos: Option<u32> = None;
-                while let Some(key) = tri!(map.next_key()) {
-                    match key {
-                        Field::Secs => {
-                            if secs.is_some() {
-                                return Err(<A::Error as Error>::duplicate_field("secs"));
-                            }
-                            secs = Some(tri!(map.next_value()));
-                        }
-                        Field::Nanos => {
-                            if nanos.is_some() {
-                                return Err(<A::Error as Error>::duplicate_field("nanos"));
-                            }
-                            nanos = Some(tri!(map.next_value()));
-                        }
-                    }
-                }
-                let secs = match secs {
-                    Some(secs) => secs,
-                    None => return Err(<A::Error as Error>::missing_field("secs")),
-                };
-                let nanos = match nanos {
-                    Some(nanos) => nanos,
-                    None => return Err(<A::Error as Error>::missing_field("nanos")),
-                };
-                tri!(check_overflow(secs, nanos));
-                Ok(Duration::new(secs, nanos))
-            }
-        }
-
-        const FIELDS: &[&str] = &["secs", "nanos"];
-        deserializer.deserialize_struct("Duration", FIELDS, DurationVisitor)
-    }
-}
-
-////////////////////////////////////////////////////////////////////////////////
-
-#[cfg(feature = "std")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "std")))]
-impl<'de> Deserialize<'de> for SystemTime {
-    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-    where
-        D: Deserializer<'de>,
-    {
-        // Reuse duration
-        enum Field {
-            Secs,
-            Nanos,
-        }
-
-        impl<'de> Deserialize<'de> for Field {
-            fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-            where
-                D: Deserializer<'de>,
-            {
-                struct FieldVisitor;
-
-                impl<'de> Visitor<'de> for FieldVisitor {
-                    type Value = Field;
-
-                    fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-                        formatter.write_str("`secs_since_epoch` or `nanos_since_epoch`")
-                    }
-
-                    fn visit_str<E>(self, value: &str) -> Result<Self::Value, E>
-                    where
-                        E: Error,
-                    {
-                        match value {
-                            "secs_since_epoch" => Ok(Field::Secs),
-                            "nanos_since_epoch" => Ok(Field::Nanos),
-                            _ => Err(Error::unknown_field(value, FIELDS)),
-                        }
-                    }
-
-                    fn visit_bytes<E>(self, value: &[u8]) -> Result<Self::Value, E>
-                    where
-                        E: Error,
-                    {
-                        match value {
-                            b"secs_since_epoch" => Ok(Field::Secs),
-                            b"nanos_since_epoch" => Ok(Field::Nanos),
-                            _ => {
-                                let value = String::from_utf8_lossy(value);
-                                Err(Error::unknown_field(&value, FIELDS))
-                            }
-                        }
-                    }
-                }
-
-                deserializer.deserialize_identifier(FieldVisitor)
-            }
-        }
-
-        fn check_overflow<E>(secs: u64, nanos: u32) -> Result<(), E>
-        where
-            E: Error,
-        {
-            static NANOS_PER_SEC: u32 = 1_000_000_000;
-            match secs.checked_add((nanos / NANOS_PER_SEC) as u64) {
-                Some(_) => Ok(()),
-                None => Err(E::custom("overflow deserializing SystemTime epoch offset")),
-            }
-        }
-
-        struct DurationVisitor;
-
-        impl<'de> Visitor<'de> for DurationVisitor {
-            type Value = Duration;
-
-            fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-                formatter.write_str("struct SystemTime")
-            }
-
-            fn visit_seq<A>(self, mut seq: A) -> Result<Self::Value, A::Error>
-            where
-                A: SeqAccess<'de>,
-            {
-                let secs: u64 = match tri!(seq.next_element()) {
-                    Some(value) => value,
-                    None => {
-                        return Err(Error::invalid_length(0, &self));
-                    }
-                };
-                let nanos: u32 = match tri!(seq.next_element()) {
-                    Some(value) => value,
-                    None => {
-                        return Err(Error::invalid_length(1, &self));
-                    }
-                };
-                tri!(check_overflow(secs, nanos));
-                Ok(Duration::new(secs, nanos))
-            }
-
-            fn visit_map<A>(self, mut map: A) -> Result<Self::Value, A::Error>
-            where
-                A: MapAccess<'de>,
-            {
-                let mut secs: Option<u64> = None;
-                let mut nanos: Option<u32> = None;
-                while let Some(key) = tri!(map.next_key()) {
-                    match key {
-                        Field::Secs => {
-                            if secs.is_some() {
-                                return Err(<A::Error as Error>::duplicate_field(
-                                    "secs_since_epoch",
-                                ));
-                            }
-                            secs = Some(tri!(map.next_value()));
-                        }
-                        Field::Nanos => {
-                            if nanos.is_some() {
-                                return Err(<A::Error as Error>::duplicate_field(
-                                    "nanos_since_epoch",
-                                ));
-                            }
-                            nanos = Some(tri!(map.next_value()));
-                        }
-                    }
-                }
-                let secs = match secs {
-                    Some(secs) => secs,
-                    None => return Err(<A::Error as Error>::missing_field("secs_since_epoch")),
-                };
-                let nanos = match nanos {
-                    Some(nanos) => nanos,
-                    None => return Err(<A::Error as Error>::missing_field("nanos_since_epoch")),
-                };
-                tri!(check_overflow(secs, nanos));
-                Ok(Duration::new(secs, nanos))
-            }
-        }
-
-        const FIELDS: &[&str] = &["secs_since_epoch", "nanos_since_epoch"];
-        let duration = tri!(deserializer.deserialize_struct("SystemTime", FIELDS, DurationVisitor));
-        #[cfg(not(no_systemtime_checked_add))]
-        let ret = UNIX_EPOCH
-            .checked_add(duration)
-            .ok_or_else(|| D::Error::custom("overflow deserializing SystemTime"));
-        #[cfg(no_systemtime_checked_add)]
-        let ret = Ok(UNIX_EPOCH + duration);
-        ret
-    }
-}
-
-////////////////////////////////////////////////////////////////////////////////
-
-// Similar to:
-//
-//     #[derive(Deserialize)]
-//     #[serde(deny_unknown_fields)]
-//     struct Range<Idx> {
-//         start: Idx,
-//         end: Idx,
-//     }
-impl<'de, Idx> Deserialize<'de> for Range<Idx>
-where
-    Idx: Deserialize<'de>,
-{
-    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-    where
-        D: Deserializer<'de>,
-    {
-        let (start, end) = tri!(deserializer.deserialize_struct(
-            "Range",
-            range::FIELDS,
-            range::RangeVisitor {
-                expecting: "struct Range",
-                phantom: PhantomData,
-            },
-        ));
-        Ok(start..end)
-    }
-}
-
-impl<'de, Idx> Deserialize<'de> for RangeInclusive<Idx>
-where
-    Idx: Deserialize<'de>,
-{
-    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-    where
-        D: Deserializer<'de>,
-    {
-        let (start, end) = tri!(deserializer.deserialize_struct(
-            "RangeInclusive",
-            range::FIELDS,
-            range::RangeVisitor {
-                expecting: "struct RangeInclusive",
-                phantom: PhantomData,
-            },
-        ));
-        Ok(RangeInclusive::new(start, end))
-    }
-}
-
-mod range {
-    use crate::lib::*;
-
-    use crate::de::{Deserialize, Deserializer, Error, MapAccess, SeqAccess, Visitor};
-
-    pub const FIELDS: &[&str] = &["start", "end"];
-
-    // If this were outside of the serde crate, it would just use:
-    //
-    //    #[derive(Deserialize)]
-    //    #[serde(field_identifier, rename_all = "lowercase")]
-    enum Field {
-        Start,
-        End,
-    }
-
-    impl<'de> Deserialize<'de> for Field {
-        fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-        where
-            D: Deserializer<'de>,
-        {
-            struct FieldVisitor;
-
-            impl<'de> Visitor<'de> for FieldVisitor {
-                type Value = Field;
-
-                fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-                    formatter.write_str("`start` or `end`")
-                }
-
-                fn visit_str<E>(self, value: &str) -> Result<Self::Value, E>
-                where
-                    E: Error,
-                {
-                    match value {
-                        "start" => Ok(Field::Start),
-                        "end" => Ok(Field::End),
-                        _ => Err(Error::unknown_field(value, FIELDS)),
-                    }
-                }
-
-                fn visit_bytes<E>(self, value: &[u8]) -> Result<Self::Value, E>
-                where
-                    E: Error,
-                {
-                    match value {
-                        b"start" => Ok(Field::Start),
-                        b"end" => Ok(Field::End),
-                        _ => {
-                            let value = crate::__private::from_utf8_lossy(value);
-                            Err(Error::unknown_field(&*value, FIELDS))
-                        }
-                    }
-                }
-            }
-
-            deserializer.deserialize_identifier(FieldVisitor)
-        }
-    }
-
-    pub struct RangeVisitor<Idx> {
-        pub expecting: &'static str,
-        pub phantom: PhantomData<Idx>,
-    }
-
-    impl<'de, Idx> Visitor<'de> for RangeVisitor<Idx>
-    where
-        Idx: Deserialize<'de>,
-    {
-        type Value = (Idx, Idx);
-
-        fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-            formatter.write_str(self.expecting)
-        }
-
-        fn visit_seq<A>(self, mut seq: A) -> Result<Self::Value, A::Error>
-        where
-            A: SeqAccess<'de>,
-        {
-            let start: Idx = match tri!(seq.next_element()) {
-                Some(value) => value,
-                None => {
-                    return Err(Error::invalid_length(0, &self));
-                }
-            };
-            let end: Idx = match tri!(seq.next_element()) {
-                Some(value) => value,
-                None => {
-                    return Err(Error::invalid_length(1, &self));
-                }
-            };
-            Ok((start, end))
-        }
-
-        fn visit_map<A>(self, mut map: A) -> Result<Self::Value, A::Error>
-        where
-            A: MapAccess<'de>,
-        {
-            let mut start: Option<Idx> = None;
-            let mut end: Option<Idx> = None;
-            while let Some(key) = tri!(map.next_key()) {
-                match key {
-                    Field::Start => {
-                        if start.is_some() {
-                            return Err(<A::Error as Error>::duplicate_field("start"));
-                        }
-                        start = Some(tri!(map.next_value()));
-                    }
-                    Field::End => {
-                        if end.is_some() {
-                            return Err(<A::Error as Error>::duplicate_field("end"));
-                        }
-                        end = Some(tri!(map.next_value()));
-                    }
-                }
-            }
-            let start = match start {
-                Some(start) => start,
-                None => return Err(<A::Error as Error>::missing_field("start")),
-            };
-            let end = match end {
-                Some(end) => end,
-                None => return Err(<A::Error as Error>::missing_field("end")),
-            };
-            Ok((start, end))
-        }
-    }
-}
-
-////////////////////////////////////////////////////////////////////////////////
-
-// Similar to:
-//
-//     #[derive(Deserialize)]
-//     #[serde(deny_unknown_fields)]
-//     struct RangeFrom<Idx> {
-//         start: Idx,
-//     }
-impl<'de, Idx> Deserialize<'de> for RangeFrom<Idx>
-where
-    Idx: Deserialize<'de>,
-{
-    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-    where
-        D: Deserializer<'de>,
-    {
-        let start = tri!(deserializer.deserialize_struct(
-            "RangeFrom",
-            range_from::FIELDS,
-            range_from::RangeFromVisitor {
-                expecting: "struct RangeFrom",
-                phantom: PhantomData,
-            },
-        ));
-        Ok(start..)
-    }
-}
-
-mod range_from {
-    use crate::lib::*;
-
-    use crate::de::{Deserialize, Deserializer, Error, MapAccess, SeqAccess, Visitor};
-
-    pub const FIELDS: &[&str] = &["start"];
-
-    // If this were outside of the serde crate, it would just use:
-    //
-    //    #[derive(Deserialize)]
-    //    #[serde(field_identifier, rename_all = "lowercase")]
-    enum Field {
-        Start,
-    }
-
-    impl<'de> Deserialize<'de> for Field {
-        fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-        where
-            D: Deserializer<'de>,
-        {
-            struct FieldVisitor;
-
-            impl<'de> Visitor<'de> for FieldVisitor {
-                type Value = Field;
-
-                fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-                    formatter.write_str("`start`")
-                }
-
-                fn visit_str<E>(self, value: &str) -> Result<Self::Value, E>
-                where
-                    E: Error,
-                {
-                    match value {
-                        "start" => Ok(Field::Start),
-                        _ => Err(Error::unknown_field(value, FIELDS)),
-                    }
-                }
-
-                fn visit_bytes<E>(self, value: &[u8]) -> Result<Self::Value, E>
-                where
-                    E: Error,
-                {
-                    match value {
-                        b"start" => Ok(Field::Start),
-                        _ => {
-                            let value = crate::__private::from_utf8_lossy(value);
-                            Err(Error::unknown_field(&*value, FIELDS))
-                        }
-                    }
-                }
-            }
-
-            deserializer.deserialize_identifier(FieldVisitor)
-        }
-    }
-
-    pub struct RangeFromVisitor<Idx> {
-        pub expecting: &'static str,
-        pub phantom: PhantomData<Idx>,
-    }
-
-    impl<'de, Idx> Visitor<'de> for RangeFromVisitor<Idx>
-    where
-        Idx: Deserialize<'de>,
-    {
-        type Value = Idx;
-
-        fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-            formatter.write_str(self.expecting)
-        }
-
-        fn visit_seq<A>(self, mut seq: A) -> Result<Self::Value, A::Error>
-        where
-            A: SeqAccess<'de>,
-        {
-            let start: Idx = match tri!(seq.next_element()) {
-                Some(value) => value,
-                None => {
-                    return Err(Error::invalid_length(0, &self));
-                }
-            };
-            Ok(start)
-        }
-
-        fn visit_map<A>(self, mut map: A) -> Result<Self::Value, A::Error>
-        where
-            A: MapAccess<'de>,
-        {
-            let mut start: Option<Idx> = None;
-            while let Some(key) = tri!(map.next_key()) {
-                match key {
-                    Field::Start => {
-                        if start.is_some() {
-                            return Err(<A::Error as Error>::duplicate_field("start"));
-                        }
-                        start = Some(tri!(map.next_value()));
-                    }
-                }
-            }
-            let start = match start {
-                Some(start) => start,
-                None => return Err(<A::Error as Error>::missing_field("start")),
-            };
-            Ok(start)
-        }
-    }
-}
-
-////////////////////////////////////////////////////////////////////////////////
-
-// Similar to:
-//
-//     #[derive(Deserialize)]
-//     #[serde(deny_unknown_fields)]
-//     struct RangeTo<Idx> {
-//         end: Idx,
-//     }
-impl<'de, Idx> Deserialize<'de> for RangeTo<Idx>
-where
-    Idx: Deserialize<'de>,
-{
-    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-    where
-        D: Deserializer<'de>,
-    {
-        let end = tri!(deserializer.deserialize_struct(
-            "RangeTo",
-            range_to::FIELDS,
-            range_to::RangeToVisitor {
-                expecting: "struct RangeTo",
-                phantom: PhantomData,
-            },
-        ));
-        Ok(..end)
-    }
-}
-
-mod range_to {
-    use crate::lib::*;
-
-    use crate::de::{Deserialize, Deserializer, Error, MapAccess, SeqAccess, Visitor};
-
-    pub const FIELDS: &[&str] = &["end"];
-
-    // If this were outside of the serde crate, it would just use:
-    //
-    //    #[derive(Deserialize)]
-    //    #[serde(field_identifier, rename_all = "lowercase")]
-    enum Field {
-        End,
-    }
-
-    impl<'de> Deserialize<'de> for Field {
-        fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-        where
-            D: Deserializer<'de>,
-        {
-            struct FieldVisitor;
-
-            impl<'de> Visitor<'de> for FieldVisitor {
-                type Value = Field;
-
-                fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-                    formatter.write_str("`end`")
-                }
-
-                fn visit_str<E>(self, value: &str) -> Result<Self::Value, E>
-                where
-                    E: Error,
-                {
-                    match value {
-                        "end" => Ok(Field::End),
-                        _ => Err(Error::unknown_field(value, FIELDS)),
-                    }
-                }
-
-                fn visit_bytes<E>(self, value: &[u8]) -> Result<Self::Value, E>
-                where
-                    E: Error,
-                {
-                    match value {
-                        b"end" => Ok(Field::End),
-                        _ => {
-                            let value = crate::__private::from_utf8_lossy(value);
-                            Err(Error::unknown_field(&*value, FIELDS))
-                        }
-                    }
-                }
-            }
-
-            deserializer.deserialize_identifier(FieldVisitor)
-        }
-    }
-
-    pub struct RangeToVisitor<Idx> {
-        pub expecting: &'static str,
-        pub phantom: PhantomData<Idx>,
-    }
-
-    impl<'de, Idx> Visitor<'de> for RangeToVisitor<Idx>
-    where
-        Idx: Deserialize<'de>,
-    {
-        type Value = Idx;
-
-        fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-            formatter.write_str(self.expecting)
-        }
-
-        fn visit_seq<A>(self, mut seq: A) -> Result<Self::Value, A::Error>
-        where
-            A: SeqAccess<'de>,
-        {
-            let end: Idx = match tri!(seq.next_element()) {
-                Some(value) => value,
-                None => {
-                    return Err(Error::invalid_length(0, &self));
-                }
-            };
-            Ok(end)
-        }
-
-        fn visit_map<A>(self, mut map: A) -> Result<Self::Value, A::Error>
-        where
-            A: MapAccess<'de>,
-        {
-            let mut end: Option<Idx> = None;
-            while let Some(key) = tri!(map.next_key()) {
-                match key {
-                    Field::End => {
-                        if end.is_some() {
-                            return Err(<A::Error as Error>::duplicate_field("end"));
-                        }
-                        end = Some(tri!(map.next_value()));
-                    }
-                }
-            }
-            let end = match end {
-                Some(end) => end,
-                None => return Err(<A::Error as Error>::missing_field("end")),
-            };
-            Ok(end)
-        }
-    }
-}
-
-////////////////////////////////////////////////////////////////////////////////
-
-impl<'de, T> Deserialize<'de> for Bound<T>
-where
-    T: Deserialize<'de>,
-{
-    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-    where
-        D: Deserializer<'de>,
-    {
-        enum Field {
-            Unbounded,
-            Included,
-            Excluded,
-        }
-
-        impl<'de> Deserialize<'de> for Field {
-            #[inline]
-            fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-            where
-                D: Deserializer<'de>,
-            {
-                struct FieldVisitor;
-
-                impl<'de> Visitor<'de> for FieldVisitor {
-                    type Value = Field;
-
-                    fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-                        formatter.write_str("`Unbounded`, `Included` or `Excluded`")
-                    }
-
-                    fn visit_u64<E>(self, value: u64) -> Result<Self::Value, E>
-                    where
-                        E: Error,
-                    {
-                        match value {
-                            0 => Ok(Field::Unbounded),
-                            1 => Ok(Field::Included),
-                            2 => Ok(Field::Excluded),
-                            _ => Err(Error::invalid_value(Unexpected::Unsigned(value), &self)),
-                        }
-                    }
-
-                    fn visit_str<E>(self, value: &str) -> Result<Self::Value, E>
-                    where
-                        E: Error,
-                    {
-                        match value {
-                            "Unbounded" => Ok(Field::Unbounded),
-                            "Included" => Ok(Field::Included),
-                            "Excluded" => Ok(Field::Excluded),
-                            _ => Err(Error::unknown_variant(value, VARIANTS)),
-                        }
-                    }
-
-                    fn visit_bytes<E>(self, value: &[u8]) -> Result<Self::Value, E>
-                    where
-                        E: Error,
-                    {
-                        match value {
-                            b"Unbounded" => Ok(Field::Unbounded),
-                            b"Included" => Ok(Field::Included),
-                            b"Excluded" => Ok(Field::Excluded),
-                            _ => match str::from_utf8(value) {
-                                Ok(value) => Err(Error::unknown_variant(value, VARIANTS)),
-                                Err(_) => {
-                                    Err(Error::invalid_value(Unexpected::Bytes(value), &self))
-                                }
-                            },
-                        }
-                    }
-                }
-
-                deserializer.deserialize_identifier(FieldVisitor)
-            }
-        }
-
-        struct BoundVisitor<T>(PhantomData<Bound<T>>);
-
-        impl<'de, T> Visitor<'de> for BoundVisitor<T>
-        where
-            T: Deserialize<'de>,
-        {
-            type Value = Bound<T>;
-
-            fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-                formatter.write_str("enum Bound")
-            }
-
-            fn visit_enum<A>(self, data: A) -> Result<Self::Value, A::Error>
-            where
-                A: EnumAccess<'de>,
-            {
-                match tri!(data.variant()) {
-                    (Field::Unbounded, v) => v.unit_variant().map(|()| Bound::Unbounded),
-                    (Field::Included, v) => v.newtype_variant().map(Bound::Included),
-                    (Field::Excluded, v) => v.newtype_variant().map(Bound::Excluded),
-                }
-            }
-        }
-
-        const VARIANTS: &[&str] = &["Unbounded", "Included", "Excluded"];
-
-        deserializer.deserialize_enum("Bound", VARIANTS, BoundVisitor(PhantomData))
-    }
-}
-
-////////////////////////////////////////////////////////////////////////////////
-
-impl<'de, T, E> Deserialize<'de> for Result<T, E>
-where
-    T: Deserialize<'de>,
-    E: Deserialize<'de>,
-{
-    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-    where
-        D: Deserializer<'de>,
-    {
-        // If this were outside of the serde crate, it would just use:
-        //
-        //    #[derive(Deserialize)]
-        //    #[serde(variant_identifier)]
-        enum Field {
-            Ok,
-            Err,
-        }
-
-        impl<'de> Deserialize<'de> for Field {
-            #[inline]
-            fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-            where
-                D: Deserializer<'de>,
-            {
-                struct FieldVisitor;
-
-                impl<'de> Visitor<'de> for FieldVisitor {
-                    type Value = Field;
-
-                    fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-                        formatter.write_str("`Ok` or `Err`")
-                    }
-
-                    fn visit_u64<E>(self, value: u64) -> Result<Self::Value, E>
-                    where
-                        E: Error,
-                    {
-                        match value {
-                            0 => Ok(Field::Ok),
-                            1 => Ok(Field::Err),
-                            _ => Err(Error::invalid_value(Unexpected::Unsigned(value), &self)),
-                        }
-                    }
-
-                    fn visit_str<E>(self, value: &str) -> Result<Self::Value, E>
-                    where
-                        E: Error,
-                    {
-                        match value {
-                            "Ok" => Ok(Field::Ok),
-                            "Err" => Ok(Field::Err),
-                            _ => Err(Error::unknown_variant(value, VARIANTS)),
-                        }
-                    }
-
-                    fn visit_bytes<E>(self, value: &[u8]) -> Result<Self::Value, E>
-                    where
-                        E: Error,
-                    {
-                        match value {
-                            b"Ok" => Ok(Field::Ok),
-                            b"Err" => Ok(Field::Err),
-                            _ => match str::from_utf8(value) {
-                                Ok(value) => Err(Error::unknown_variant(value, VARIANTS)),
-                                Err(_) => {
-                                    Err(Error::invalid_value(Unexpected::Bytes(value), &self))
-                                }
-                            },
-                        }
-                    }
-                }
-
-                deserializer.deserialize_identifier(FieldVisitor)
-            }
-        }
-
-        struct ResultVisitor<T, E>(PhantomData<Result<T, E>>);
-
-        impl<'de, T, E> Visitor<'de> for ResultVisitor<T, E>
-        where
-            T: Deserialize<'de>,
-            E: Deserialize<'de>,
-        {
-            type Value = Result<T, E>;
-
-            fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-                formatter.write_str("enum Result")
-            }
-
-            fn visit_enum<A>(self, data: A) -> Result<Self::Value, A::Error>
-            where
-                A: EnumAccess<'de>,
-            {
-                match tri!(data.variant()) {
-                    (Field::Ok, v) => v.newtype_variant().map(Ok),
-                    (Field::Err, v) => v.newtype_variant().map(Err),
-                }
-            }
-        }
-
-        const VARIANTS: &[&str] = &["Ok", "Err"];
-
-        deserializer.deserialize_enum("Result", VARIANTS, ResultVisitor(PhantomData))
-    }
-}
-
-////////////////////////////////////////////////////////////////////////////////
-
-impl<'de, T> Deserialize<'de> for Wrapping<T>
-where
-    T: Deserialize<'de>,
-{
-    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-    where
-        D: Deserializer<'de>,
-    {
-        Deserialize::deserialize(deserializer).map(Wrapping)
-    }
-}
-
-#[cfg(all(feature = "std", not(no_std_atomic)))]
-macro_rules! atomic_impl {
-    ($($ty:ident $size:expr)*) => {
-        $(
-            #[cfg(any(no_target_has_atomic, target_has_atomic = $size))]
-            #[cfg_attr(doc_cfg, doc(cfg(all(feature = "std", target_has_atomic = $size))))]
-            impl<'de> Deserialize<'de> for $ty {
-                fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-                where
-                    D: Deserializer<'de>,
-                {
-                    Deserialize::deserialize(deserializer).map(Self::new)
-                }
-            }
-        )*
-    };
-}
-
-#[cfg(all(feature = "std", not(no_std_atomic)))]
-atomic_impl! {
-    AtomicBool "8"
-    AtomicI8 "8"
-    AtomicI16 "16"
-    AtomicI32 "32"
-    AtomicIsize "ptr"
-    AtomicU8 "8"
-    AtomicU16 "16"
-    AtomicU32 "32"
-    AtomicUsize "ptr"
-}
-
-#[cfg(all(feature = "std", not(no_std_atomic64)))]
-atomic_impl! {
-    AtomicI64 "64"
-    AtomicU64 "64"
-}
-
-#[cfg(feature = "std")]
-struct FromStrVisitor<T> {
-    expecting: &'static str,
-    ty: PhantomData<T>,
-}
-
-#[cfg(feature = "std")]
-impl<T> FromStrVisitor<T> {
-    fn new(expecting: &'static str) -> Self {
-        FromStrVisitor {
-            expecting,
-            ty: PhantomData,
-        }
-    }
-}
-
-#[cfg(feature = "std")]
-impl<'de, T> Visitor<'de> for FromStrVisitor<T>
-where
-    T: str::FromStr,
-    T::Err: fmt::Display,
-{
-    type Value = T;
-
-    fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        formatter.write_str(self.expecting)
-    }
-
-    fn visit_str<E>(self, s: &str) -> Result<Self::Value, E>
-    where
-        E: Error,
-    {
-        s.parse().map_err(Error::custom)
-    }
-}