diff --git a/bitcoin/src/psbt/error.rs b/bitcoin/src/psbt/error.rs
index f6511f02..75a17222 100644
--- a/bitcoin/src/psbt/error.rs
+++ b/bitcoin/src/psbt/error.rs
@@ -1,18 +1,15 @@
 // SPDX-License-Identifier: CC0-1.0
 
-use crate::prelude::*;
-
 use core::fmt;
 
 use bitcoin_internals::write_err;
 
+use crate::bip32::ExtendedPubKey;
 use crate::blockdata::transaction::Transaction;
 use crate::consensus::encode;
+use crate::prelude::*;
 use crate::psbt::raw;
-
-use crate::hashes;
-use crate::io;
-use crate::bip32::ExtendedPubKey;
+use crate::{hashes, io};
 
 /// Enum for marking psbt hash error.
 #[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash, Debug)]
@@ -113,29 +110,41 @@ impl fmt::Display for Error {
             Error::InvalidMagic => f.write_str("invalid magic"),
             Error::MissingUtxo => f.write_str("UTXO information is not present in PSBT"),
             Error::InvalidSeparator => f.write_str("invalid separator"),
-            Error::PsbtUtxoOutOfbounds => f.write_str("output index is out of bounds of non witness script output array"),
+            Error::PsbtUtxoOutOfbounds =>
+                f.write_str("output index is out of bounds of non witness script output array"),
             Error::InvalidKey(ref rkey) => write!(f, "invalid key: {}", rkey),
-            Error::InvalidProprietaryKey => write!(f, "non-proprietary key type found when proprietary key was expected"),
+            Error::InvalidProprietaryKey =>
+                write!(f, "non-proprietary key type found when proprietary key was expected"),
             Error::DuplicateKey(ref rkey) => write!(f, "duplicate key: {}", rkey),
-            Error::UnsignedTxHasScriptSigs => f.write_str("the unsigned transaction has script sigs"),
-            Error::UnsignedTxHasScriptWitnesses => f.write_str("the unsigned transaction has script witnesses"),
-            Error::MustHaveUnsignedTx => {
-                f.write_str("partially signed transactions must have an unsigned transaction")
-            }
+            Error::UnsignedTxHasScriptSigs =>
+                f.write_str("the unsigned transaction has script sigs"),
+            Error::UnsignedTxHasScriptWitnesses =>
+                f.write_str("the unsigned transaction has script witnesses"),
+            Error::MustHaveUnsignedTx =>
+                f.write_str("partially signed transactions must have an unsigned transaction"),
             Error::NoMorePairs => f.write_str("no more key-value pairs for this psbt map"),
-            Error::UnexpectedUnsignedTx { expected: ref e, actual: ref a } => write!(f, "different unsigned transaction: expected {}, actual {}", e.txid(), a.txid()),
-            Error::NonStandardSighashType(ref sht) => write!(f, "non-standard sighash type: {}", sht),
+            Error::UnexpectedUnsignedTx { expected: ref e, actual: ref a } => write!(
+                f,
+                "different unsigned transaction: expected {}, actual {}",
+                e.txid(),
+                a.txid()
+            ),
+            Error::NonStandardSighashType(ref sht) =>
+                write!(f, "non-standard sighash type: {}", sht),
             Error::HashParse(ref e) => write_err!(f, "hash parse error"; e),
-            Error::InvalidPreimageHashPair{ref preimage, ref hash, ref hash_type} => {
+            Error::InvalidPreimageHashPair { ref preimage, ref hash, ref hash_type } => {
                 // directly using debug forms of psbthash enums
-                write!(f, "Preimage {:?} does not match {:?} hash {:?}", preimage, hash_type, hash )
-            },
-            Error::CombineInconsistentKeySources(ref s) => { write!(f, "combine conflict: {}", s) },
+                write!(f, "Preimage {:?} does not match {:?} hash {:?}", preimage, hash_type, hash)
+            }
+            Error::CombineInconsistentKeySources(ref s) => {
+                write!(f, "combine conflict: {}", s)
+            }
             Error::ConsensusEncoding(ref e) => write_err!(f, "bitcoin consensus encoding error"; e),
             Error::NegativeFee => f.write_str("PSBT has a negative fee which is not allowed"),
             Error::FeeOverflow => f.write_str("integer overflow in fee calculation"),
             Error::InvalidPublicKey(ref e) => write_err!(f, "invalid public key"; e),
-            Error::InvalidSecp256k1PublicKey(ref e) => write_err!(f, "invalid secp256k1 public key"; e),
+            Error::InvalidSecp256k1PublicKey(ref e) =>
+                write_err!(f, "invalid secp256k1 public key"; e),
             Error::InvalidXOnlyPublicKey => f.write_str("invalid xonly public key"),
             Error::InvalidEcdsaSignature(ref e) => write_err!(f, "invalid ECDSA signature"; e),
             Error::InvalidTaprootSignature(ref e) => write_err!(f, "invalid taproot signature"; e),
@@ -145,7 +154,8 @@ impl fmt::Display for Error {
             Error::TapTree(ref e) => write_err!(f, "taproot tree error"; e),
             Error::XPubKey(s) => write!(f, "xpub key error -  {}", s),
             Error::Version(s) => write!(f, "version error {}", s),
-            Error::PartialDataConsumption => f.write_str("data not consumed entirely when explicitly deserializing"),
+            Error::PartialDataConsumption =>
+                f.write_str("data not consumed entirely when explicitly deserializing"),
             Error::Io(ref e) => write_err!(f, "I/O error"; e),
         }
     }
@@ -161,7 +171,7 @@ impl std::error::Error for Error {
             HashParse(e) => Some(e),
             ConsensusEncoding(e) => Some(e),
             Io(e) => Some(e),
-            | InvalidMagic
+            InvalidMagic
             | MissingUtxo
             | InvalidSeparator
             | PsbtUtxoOutOfbounds
@@ -174,7 +184,7 @@ impl std::error::Error for Error {
             | NoMorePairs
             | UnexpectedUnsignedTx { .. }
             | NonStandardSighashType(_)
-            | InvalidPreimageHashPair{ .. }
+            | InvalidPreimageHashPair { .. }
             | CombineInconsistentKeySources(_)
             | NegativeFee
             | FeeOverflow
@@ -189,26 +199,20 @@ impl std::error::Error for Error {
             | TapTree(_)
             | XPubKey(_)
             | Version(_)
-            | PartialDataConsumption=> None,
+            | PartialDataConsumption => None,
         }
     }
 }
 
 #[doc(hidden)]
 impl From<hashes::Error> for Error {
-    fn from(e: hashes::Error) -> Error {
-        Error::HashParse(e)
-    }
+    fn from(e: hashes::Error) -> Error { Error::HashParse(e) }
 }
 
 impl From<encode::Error> for Error {
-    fn from(e: encode::Error) -> Self {
-        Error::ConsensusEncoding(e)
-    }
+    fn from(e: encode::Error) -> Self { Error::ConsensusEncoding(e) }
 }
 
 impl From<io::Error> for Error {
-    fn from(e: io::Error) -> Self {
-        Error::Io(e)
-    }
+    fn from(e: io::Error) -> Self { Error::Io(e) }
 }
diff --git a/bitcoin/src/psbt/macros.rs b/bitcoin/src/psbt/macros.rs
index 77da1679..187d0eef 100644
--- a/bitcoin/src/psbt/macros.rs
+++ b/bitcoin/src/psbt/macros.rs
@@ -2,7 +2,11 @@
 
 #[allow(unused_macros)]
 macro_rules! hex_psbt {
-    ($s:expr) => { <$crate::psbt::PartiallySignedTransaction>::deserialize(&<$crate::prelude::Vec<u8> as $crate::hashes::hex::FromHex>::from_hex($s).unwrap()) };
+    ($s:expr) => {
+        <$crate::psbt::PartiallySignedTransaction>::deserialize(
+            &<$crate::prelude::Vec<u8> as $crate::hashes::hex::FromHex>::from_hex($s).unwrap(),
+        )
+    };
 }
 
 macro_rules! combine {
@@ -33,9 +37,7 @@ macro_rules! impl_psbt_deserialize {
 macro_rules! impl_psbt_serialize {
     ($thing:ty) => {
         impl $crate::psbt::serialize::Serialize for $thing {
-            fn serialize(&self) -> $crate::prelude::Vec<u8> {
-                $crate::consensus::serialize(self)
-            }
+            fn serialize(&self) -> $crate::prelude::Vec<u8> { $crate::consensus::serialize(self) }
         }
     };
 }
@@ -43,9 +45,7 @@ macro_rules! impl_psbt_serialize {
 macro_rules! impl_psbtmap_serialize {
     ($thing:ty) => {
         impl $crate::psbt::serialize::Serialize for $thing {
-            fn serialize(&self) -> Vec<u8> {
-                self.serialize_map()
-            }
+            fn serialize(&self) -> Vec<u8> { self.serialize_map() }
         }
     };
 }
@@ -157,9 +157,7 @@ macro_rules! impl_psbt_hash_deserialize {
     ($hash_type:ty) => {
         impl $crate::psbt::serialize::Deserialize for $hash_type {
             fn deserialize(bytes: &[u8]) -> Result<Self, $crate::psbt::Error> {
-                <$hash_type>::from_slice(&bytes[..]).map_err(|e| {
-                    $crate::psbt::Error::from(e)
-                })
+                <$hash_type>::from_slice(&bytes[..]).map_err(|e| $crate::psbt::Error::from(e))
             }
         }
     };
@@ -168,9 +166,7 @@ macro_rules! impl_psbt_hash_deserialize {
 macro_rules! impl_psbt_hash_serialize {
     ($hash_type:ty) => {
         impl $crate::psbt::serialize::Serialize for $hash_type {
-            fn serialize(&self) -> $crate::prelude::Vec<u8> {
-                self.as_byte_array().to_vec()
-            }
+            fn serialize(&self) -> $crate::prelude::Vec<u8> { self.as_byte_array().to_vec() }
         }
     };
 }
diff --git a/bitcoin/src/psbt/map/global.rs b/bitcoin/src/psbt/map/global.rs
index 908b2a7c..1add4f8d 100644
--- a/bitcoin/src/psbt/map/global.rs
+++ b/bitcoin/src/psbt/map/global.rs
@@ -2,16 +2,14 @@
 
 use core::convert::TryFrom;
 
-use crate::prelude::*;
-
-use crate::io::{self, Cursor, Read};
-
+use crate::bip32::{ChildNumber, DerivationPath, ExtendedPubKey, Fingerprint};
 use crate::blockdata::transaction::Transaction;
 use crate::consensus::encode::MAX_VEC_SIZE;
 use crate::consensus::{encode, Decodable};
+use crate::io::{self, Cursor, Read};
+use crate::prelude::*;
 use crate::psbt::map::Map;
 use crate::psbt::{raw, Error, PartiallySignedTransaction};
-use crate::bip32::{ExtendedPubKey, Fingerprint, DerivationPath, ChildNumber};
 
 /// Type: Unsigned Transaction PSBT_GLOBAL_UNSIGNED_TX = 0x00
 const PSBT_GLOBAL_UNSIGNED_TX: u8 = 0x00;
@@ -27,10 +25,7 @@ impl Map for PartiallySignedTransaction {
         let mut rv: Vec<raw::Pair> = Default::default();
 
         rv.push(raw::Pair {
-            key: raw::Key {
-                type_value: PSBT_GLOBAL_UNSIGNED_TX,
-                key: vec![],
-            },
+            key: raw::Key { type_value: PSBT_GLOBAL_UNSIGNED_TX, key: vec![] },
             value: {
                 // Manually serialized to ensure 0-input txs are serialized
                 // without witnesses.
@@ -45,42 +40,30 @@ impl Map for PartiallySignedTransaction {
 
         for (xpub, (fingerprint, derivation)) in &self.xpub {
             rv.push(raw::Pair {
-                key: raw::Key {
-                    type_value: PSBT_GLOBAL_XPUB,
-                    key: xpub.encode().to_vec(),
-                },
+                key: raw::Key { type_value: PSBT_GLOBAL_XPUB, key: xpub.encode().to_vec() },
                 value: {
                     let mut ret = Vec::with_capacity(4 + derivation.len() * 4);
                     ret.extend(fingerprint.as_bytes());
                     derivation.into_iter().for_each(|n| ret.extend(&u32::from(*n).to_le_bytes()));
                     ret
-                }
+                },
             });
         }
 
         // Serializing version only for non-default value; otherwise test vectors fail
         if self.version > 0 {
             rv.push(raw::Pair {
-                key: raw::Key {
-                    type_value: PSBT_GLOBAL_VERSION,
-                    key: vec![],
-                },
-                value: self.version.to_le_bytes().to_vec()
+                key: raw::Key { type_value: PSBT_GLOBAL_VERSION, key: vec![] },
+                value: self.version.to_le_bytes().to_vec(),
             });
         }
 
         for (key, value) in self.proprietary.iter() {
-            rv.push(raw::Pair {
-                key: key.to_key(),
-                value: value.clone(),
-            });
+            rv.push(raw::Pair { key: key.to_key(), value: value.clone() });
         }
 
         for (key, value) in self.unknown.iter() {
-            rv.push(raw::Pair {
-                key: key.clone(),
-                value: value.clone(),
-            });
+            rv.push(raw::Pair { key: key.clone(), value: value.clone() });
         }
 
         rv
@@ -93,7 +76,8 @@ impl PartiallySignedTransaction {
         let mut tx: Option<Transaction> = None;
         let mut version: Option<u32> = None;
         let mut unknowns: BTreeMap<raw::Key, Vec<u8>> = Default::default();
-        let mut xpub_map: BTreeMap<ExtendedPubKey, (Fingerprint, DerivationPath)> = Default::default();
+        let mut xpub_map: BTreeMap<ExtendedPubKey, (Fingerprint, DerivationPath)> =
+            Default::default();
         let mut proprietary: BTreeMap<raw::ProprietaryKey, Vec<u8>> = Default::default();
 
         loop {
@@ -119,13 +103,13 @@ impl PartiallySignedTransaction {
                                     });
 
                                     if decoder.position() != vlen as u64 {
-                                        return Err(Error::PartialDataConsumption)
+                                        return Err(Error::PartialDataConsumption);
                                     }
                                 } else {
-                                    return Err(Error::DuplicateKey(pair.key))
+                                    return Err(Error::DuplicateKey(pair.key));
                                 }
                             } else {
-                                return Err(Error::InvalidKey(pair.key))
+                                return Err(Error::InvalidKey(pair.key));
                             }
                         }
                         PSBT_GLOBAL_XPUB => {
@@ -136,24 +120,33 @@ impl PartiallySignedTransaction {
                                     ))?;
 
                                 if pair.value.is_empty() || pair.value.len() % 4 != 0 {
-                                    return Err(Error::XPubKey("Incorrect length of global xpub derivation data"))
+                                    return Err(Error::XPubKey(
+                                        "Incorrect length of global xpub derivation data",
+                                    ));
                                 }
 
                                 let child_count = pair.value.len() / 4 - 1;
                                 let mut decoder = Cursor::new(pair.value);
                                 let mut fingerprint = [0u8; 4];
-                                decoder.read_exact(&mut fingerprint[..]).map_err(|_| Error::XPubKey("Can't read global xpub fingerprint"))?;
+                                decoder.read_exact(&mut fingerprint[..]).map_err(|_| {
+                                    Error::XPubKey("Can't read global xpub fingerprint")
+                                })?;
                                 let mut path = Vec::<ChildNumber>::with_capacity(child_count);
                                 while let Ok(index) = u32::consensus_decode(&mut decoder) {
                                     path.push(ChildNumber::from(index))
                                 }
                                 let derivation = DerivationPath::from(path);
                                 // Keys, according to BIP-174, must be unique
-                                if xpub_map.insert(xpub, (Fingerprint::from(fingerprint), derivation)).is_some() {
-                                    return Err(Error::XPubKey("Repeated global xpub key"))
+                                if xpub_map
+                                    .insert(xpub, (Fingerprint::from(fingerprint), derivation))
+                                    .is_some()
+                                {
+                                    return Err(Error::XPubKey("Repeated global xpub key"));
                                 }
                             } else {
-                                return Err(Error::XPubKey("Xpub global key must contain serialized Xpub data"))
+                                return Err(Error::XPubKey(
+                                    "Xpub global key must contain serialized Xpub data",
+                                ));
                             }
                         }
                         PSBT_GLOBAL_VERSION => {
@@ -164,33 +157,41 @@ impl PartiallySignedTransaction {
                                     let vlen: usize = pair.value.len();
                                     let mut decoder = Cursor::new(pair.value);
                                     if vlen != 4 {
-                                        return Err(Error::Version("invalid global version value length (must be 4 bytes)"))
+                                        return Err(Error::Version(
+                                            "invalid global version value length (must be 4 bytes)",
+                                        ));
                                     }
                                     version = Some(Decodable::consensus_decode(&mut decoder)?);
                                     // We only understand version 0 PSBTs. According to BIP-174 we
                                     // should throw an error if we see anything other than version 0.
                                     if version != Some(0) {
-                                        return Err(Error::Version("PSBT versions greater than 0 are not supported"))
+                                        return Err(Error::Version(
+                                            "PSBT versions greater than 0 are not supported",
+                                        ));
                                     }
                                 } else {
-                                    return Err(Error::DuplicateKey(pair.key))
+                                    return Err(Error::DuplicateKey(pair.key));
                                 }
                             } else {
-                                return Err(Error::InvalidKey(pair.key))
+                                return Err(Error::InvalidKey(pair.key));
                             }
                         }
-                        PSBT_GLOBAL_PROPRIETARY => match proprietary.entry(raw::ProprietaryKey::try_from(pair.key.clone())?) {
+                        PSBT_GLOBAL_PROPRIETARY => match proprietary
+                            .entry(raw::ProprietaryKey::try_from(pair.key.clone())?)
+                        {
                             btree_map::Entry::Vacant(empty_key) => {
                                 empty_key.insert(pair.value);
-                            },
-                            btree_map::Entry::Occupied(_) => return Err(Error::DuplicateKey(pair.key)),
-                        }
+                            }
+                            btree_map::Entry::Occupied(_) =>
+                                return Err(Error::DuplicateKey(pair.key)),
+                        },
                         _ => match unknowns.entry(pair.key) {
                             btree_map::Entry::Vacant(empty_key) => {
                                 empty_key.insert(pair.value);
-                            },
-                            btree_map::Entry::Occupied(k) => return Err(Error::DuplicateKey(k.key().clone())),
-                        }
+                            }
+                            btree_map::Entry::Occupied(k) =>
+                                return Err(Error::DuplicateKey(k.key().clone())),
+                        },
                     }
                 }
                 Err(crate::psbt::Error::NoMorePairs) => break,
@@ -206,7 +207,7 @@ impl PartiallySignedTransaction {
                 proprietary,
                 unknown: unknowns,
                 inputs: vec![],
-                outputs: vec![]
+                outputs: vec![],
             })
         } else {
             Err(Error::MustHaveUnsignedTx)
diff --git a/bitcoin/src/psbt/map/input.rs b/bitcoin/src/psbt/map/input.rs
index 20882b07..723ce407 100644
--- a/bitcoin/src/psbt/map/input.rs
+++ b/bitcoin/src/psbt/map/input.rs
@@ -1,24 +1,25 @@
 // SPDX-License-Identifier: CC0-1.0
 
-use crate::prelude::*;
-
+use core::convert::TryFrom;
 use core::fmt;
 use core::str::FromStr;
-use core::convert::TryFrom;
 
 use secp256k1::XOnlyPublicKey;
 
-use crate::blockdata::script::ScriptBuf;
-use crate::blockdata::witness::Witness;
-use crate::blockdata::transaction::{Transaction, TxOut};
-use crate::crypto::{ecdsa, taproot};
-use crate::crypto::key::PublicKey;
-use crate::hashes::{self, hash160, ripemd160, sha256, sha256d};
 use crate::bip32::KeySource;
+use crate::blockdata::script::ScriptBuf;
+use crate::blockdata::transaction::{Transaction, TxOut};
+use crate::blockdata::witness::Witness;
+use crate::crypto::key::PublicKey;
+use crate::crypto::{ecdsa, taproot};
+use crate::hashes::{self, hash160, ripemd160, sha256, sha256d};
+use crate::prelude::*;
 use crate::psbt::map::Map;
 use crate::psbt::serialize::Deserialize;
 use crate::psbt::{self, error, raw, Error};
-use crate::sighash::{self, NonStandardSighashType, SighashTypeParseError, EcdsaSighashType, TapSighashType};
+use crate::sighash::{
+    self, EcdsaSighashType, NonStandardSighashType, SighashTypeParseError, TapSighashType,
+};
 use crate::taproot::{ControlBlock, LeafVersion, TapLeafHash, TapNodeHash};
 
 /// Type: Non-Witness UTXO PSBT_IN_NON_WITNESS_UTXO = 0x00
@@ -132,7 +133,6 @@ pub struct Input {
     pub unknown: BTreeMap<raw::Key, Vec<u8>>,
 }
 
-
 /// A Signature hash type for the corresponding input. As of taproot upgrade, the signature hash
 /// type can be either [`EcdsaSighashType`] or [`TapSighashType`] but it is not possible to know
 /// directly which signature hash type the user is dealing with. Therefore, the user is responsible
@@ -141,7 +141,7 @@ pub struct Input {
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[cfg_attr(feature = "serde", serde(crate = "actual_serde"))]
 pub struct PsbtSighashType {
-    pub (in crate::psbt) inner: u32,
+    pub(in crate::psbt) inner: u32,
 }
 
 impl fmt::Display for PsbtSighashType {
@@ -172,7 +172,7 @@ impl FromStr for PsbtSighashType {
             return Ok(PsbtSighashType { inner });
         }
 
-        Err(SighashTypeParseError{ unrecognized: s.to_owned() })
+        Err(SighashTypeParseError { unrecognized: s.to_owned() })
     }
 }
 impl From<EcdsaSighashType> for PsbtSighashType {
@@ -208,17 +208,12 @@ impl PsbtSighashType {
     ///
     /// Allows construction of a non-standard or non-valid sighash flag
     /// ([`EcdsaSighashType`], [`TapSighashType`] respectively).
-    pub fn from_u32(n: u32) -> PsbtSighashType {
-        PsbtSighashType { inner: n }
-    }
-
+    pub fn from_u32(n: u32) -> PsbtSighashType { PsbtSighashType { inner: n } }
 
     /// Converts [`PsbtSighashType`] to a raw `u32` sighash flag.
     ///
     /// No guarantees are made as to the standardness or validity of the returned value.
-    pub fn to_u32(self) -> u32 {
-        self.inner
-    }
+    pub fn to_u32(self) -> u32 { self.inner }
 }
 
 impl Input {
@@ -247,10 +242,7 @@ impl Input {
     }
 
     pub(super) fn insert_pair(&mut self, pair: raw::Pair) -> Result<(), Error> {
-        let raw::Pair {
-            key: raw_key,
-            value: raw_value,
-        } = pair;
+        let raw::Pair { key: raw_key, value: raw_value } = pair;
 
         match raw_key.type_value {
             PSBT_IN_NON_WITNESS_UTXO => {
@@ -299,16 +291,36 @@ impl Input {
                 }
             }
             PSBT_IN_RIPEMD160 => {
-                psbt_insert_hash_pair(&mut self.ripemd160_preimages, raw_key, raw_value, error::PsbtHash::Ripemd)?;
+                psbt_insert_hash_pair(
+                    &mut self.ripemd160_preimages,
+                    raw_key,
+                    raw_value,
+                    error::PsbtHash::Ripemd,
+                )?;
             }
             PSBT_IN_SHA256 => {
-                psbt_insert_hash_pair(&mut self.sha256_preimages, raw_key, raw_value, error::PsbtHash::Sha256)?;
+                psbt_insert_hash_pair(
+                    &mut self.sha256_preimages,
+                    raw_key,
+                    raw_value,
+                    error::PsbtHash::Sha256,
+                )?;
             }
             PSBT_IN_HASH160 => {
-                psbt_insert_hash_pair(&mut self.hash160_preimages, raw_key, raw_value, error::PsbtHash::Hash160)?;
+                psbt_insert_hash_pair(
+                    &mut self.hash160_preimages,
+                    raw_key,
+                    raw_value,
+                    error::PsbtHash::Hash160,
+                )?;
             }
             PSBT_IN_HASH256 => {
-                psbt_insert_hash_pair(&mut self.hash256_preimages, raw_key, raw_value, error::PsbtHash::Hash256)?;
+                psbt_insert_hash_pair(
+                    &mut self.hash256_preimages,
+                    raw_key,
+                    raw_value,
+                    error::PsbtHash::Hash256,
+                )?;
             }
             PSBT_IN_TAP_KEY_SIG => {
                 impl_psbt_insert_pair! {
@@ -345,7 +357,7 @@ impl Input {
                 match self.proprietary.entry(key) {
                     btree_map::Entry::Vacant(empty_key) => {
                         empty_key.insert(raw_value);
-                    },
+                    }
                     btree_map::Entry::Occupied(_) => return Err(Error::DuplicateKey(raw_key)),
                 }
             }
@@ -471,17 +483,11 @@ impl Map for Input {
             rv.push(self.tap_merkle_root, PSBT_IN_TAP_MERKLE_ROOT)
         }
         for (key, value) in self.proprietary.iter() {
-            rv.push(raw::Pair {
-                key: key.to_key(),
-                value: value.clone(),
-            });
+            rv.push(raw::Pair { key: key.to_key(), value: value.clone() });
         }
 
         for (key, value) in self.unknown.iter() {
-            rv.push(raw::Pair {
-                key: key.clone(),
-                value: value.clone(),
-            });
+            rv.push(raw::Pair { key: key.clone(), value: value.clone() });
         }
 
         rv
diff --git a/bitcoin/src/psbt/map/mod.rs b/bitcoin/src/psbt/map/mod.rs
index 4a2a3d94..91d455e0 100644
--- a/bitcoin/src/psbt/map/mod.rs
+++ b/bitcoin/src/psbt/map/mod.rs
@@ -1,7 +1,6 @@
 // SPDX-License-Identifier: CC0-1.0
 
 use crate::prelude::*;
-
 use crate::psbt::raw;
 
 mod global;
@@ -10,7 +9,6 @@ mod output;
 
 pub use self::input::{Input, PsbtSighashType};
 pub use self::output::Output;
-
 use super::serialize::Serialize;
 
 /// A trait that describes a PSBT key-value map.
diff --git a/bitcoin/src/psbt/map/output.rs b/bitcoin/src/psbt/map/output.rs
index 4621bc79..4f032019 100644
--- a/bitcoin/src/psbt/map/output.rs
+++ b/bitcoin/src/psbt/map/output.rs
@@ -1,18 +1,16 @@
 // SPDX-License-Identifier: CC0-1.0
 
-use crate::prelude::*;
-use core;
 use core::convert::TryFrom;
 
-use crate::blockdata::script::ScriptBuf;
 use secp256k1::XOnlyPublicKey;
-use crate::bip32::KeySource;
-use secp256k1;
-use crate::psbt::map::Map;
-use crate::psbt::raw;
-use crate::psbt::Error;
+use {core, secp256k1};
 
-use crate::taproot::{TapTree, TapLeafHash};
+use crate::bip32::KeySource;
+use crate::blockdata::script::ScriptBuf;
+use crate::prelude::*;
+use crate::psbt::map::Map;
+use crate::psbt::{raw, Error};
+use crate::taproot::{TapLeafHash, TapTree};
 
 /// Type: Redeem ScriptBuf PSBT_OUT_REDEEM_SCRIPT = 0x00
 const PSBT_OUT_REDEEM_SCRIPT: u8 = 0x00;
@@ -51,25 +49,16 @@ pub struct Output {
     #[cfg_attr(feature = "serde", serde(with = "crate::serde_utils::btreemap_as_seq"))]
     pub tap_key_origins: BTreeMap<XOnlyPublicKey, (Vec<TapLeafHash>, KeySource)>,
     /// Proprietary key-value pairs for this output.
-    #[cfg_attr(
-        feature = "serde",
-        serde(with = "crate::serde_utils::btreemap_as_seq_byte_values")
-    )]
+    #[cfg_attr(feature = "serde", serde(with = "crate::serde_utils::btreemap_as_seq_byte_values"))]
     pub proprietary: BTreeMap<raw::ProprietaryKey, Vec<u8>>,
     /// Unknown key-value pairs for this output.
-    #[cfg_attr(
-        feature = "serde",
-        serde(with = "crate::serde_utils::btreemap_as_seq_byte_values")
-    )]
+    #[cfg_attr(feature = "serde", serde(with = "crate::serde_utils::btreemap_as_seq_byte_values"))]
     pub unknown: BTreeMap<raw::Key, Vec<u8>>,
 }
 
 impl Output {
     pub(super) fn insert_pair(&mut self, pair: raw::Pair) -> Result<(), Error> {
-        let raw::Pair {
-            key: raw_key,
-            value: raw_value,
-        } = pair;
+        let raw::Pair { key: raw_key, value: raw_value } = pair;
 
         match raw_key.type_value {
             PSBT_OUT_REDEEM_SCRIPT => {
@@ -92,7 +81,7 @@ impl Output {
                 match self.proprietary.entry(key) {
                     btree_map::Entry::Vacant(empty_key) => {
                         empty_key.insert(raw_value);
-                    },
+                    }
                     btree_map::Entry::Occupied(_) => return Err(Error::DuplicateKey(raw_key)),
                 }
             }
@@ -116,7 +105,7 @@ impl Output {
                     empty_key.insert(raw_value);
                 }
                 btree_map::Entry::Occupied(k) => return Err(Error::DuplicateKey(k.key().clone())),
-            }
+            },
         }
 
         Ok(())
@@ -165,17 +154,11 @@ impl Map for Output {
         }
 
         for (key, value) in self.proprietary.iter() {
-            rv.push(raw::Pair {
-                key: key.to_key(),
-                value: value.clone(),
-            });
+            rv.push(raw::Pair { key: key.to_key(), value: value.clone() });
         }
 
         for (key, value) in self.unknown.iter() {
-            rv.push(raw::Pair {
-                key: key.clone(),
-                value: value.clone(),
-            });
+            rv.push(raw::Pair { key: key.clone(), value: value.clone() });
         }
 
         rv
diff --git a/bitcoin/src/psbt/mod.rs b/bitcoin/src/psbt/mod.rs
index e2bf4f54..ee5a0c7d 100644
--- a/bitcoin/src/psbt/mod.rs
+++ b/bitcoin/src/psbt/mod.rs
@@ -7,24 +7,22 @@
 //! except we define PSBTs containing non-standard sighash types as invalid.
 //!
 
+use core::{cmp, fmt};
 #[cfg(feature = "std")]
 use std::collections::{HashMap, HashSet};
 
-use core::{fmt, cmp};
-
-use secp256k1::{Message, Secp256k1, Signing};
 use bitcoin_internals::write_err;
+use secp256k1::{Message, Secp256k1, Signing};
 
-use crate::{prelude::*, Amount};
-
+use crate::bip32::{self, ExtendedPrivKey, ExtendedPubKey, KeySource};
 use crate::blockdata::script::ScriptBuf;
 use crate::blockdata::transaction::{Transaction, TxOut};
-use crate::bip32::{self, ExtendedPrivKey, ExtendedPubKey, KeySource};
 use crate::crypto::ecdsa;
-use crate::crypto::key::{PublicKey, PrivateKey};
-use crate::sighash::{self, EcdsaSighashType, SighashCache};
-
+use crate::crypto::key::{PrivateKey, PublicKey};
+use crate::prelude::*;
 pub use crate::sighash::Prevouts;
+use crate::sighash::{self, EcdsaSighashType, SighashCache};
+use crate::Amount;
 
 #[macro_use]
 mod macros;
@@ -86,7 +84,7 @@ impl PartiallySignedTransaction {
                 (None, Some(non_witness_utxo)) => {
                     let vout = tx_input.previous_output.vout as usize;
                     non_witness_utxo.output.get(vout).ok_or(Error::PsbtUtxoOutOfbounds)
-                },
+                }
                 (None, None) => Err(Error::MissingUtxo),
             }
         })
@@ -161,7 +159,7 @@ impl PartiallySignedTransaction {
             match self.xpub.entry(xpub) {
                 btree_map::Entry::Vacant(entry) => {
                     entry.insert((fingerprint1, derivation1));
-                },
+                }
                 btree_map::Entry::Occupied(mut entry) => {
                     // Here in case of the conflict we select the version with algorithm:
                     // 1) if everything is equal we do nothing
@@ -174,15 +172,17 @@ impl PartiallySignedTransaction {
 
                     let (fingerprint2, derivation2) = entry.get().clone();
 
-                    if (derivation1 == derivation2 && fingerprint1 == fingerprint2) ||
-                        (derivation1.len() < derivation2.len() && derivation1[..] == derivation2[derivation2.len() - derivation1.len()..])
+                    if (derivation1 == derivation2 && fingerprint1 == fingerprint2)
+                        || (derivation1.len() < derivation2.len()
+                            && derivation1[..]
+                                == derivation2[derivation2.len() - derivation1.len()..])
                     {
-                        continue
-                    }
-                    else if derivation2[..] == derivation1[derivation1.len() - derivation2.len()..]
+                        continue;
+                    } else if derivation2[..]
+                        == derivation1[derivation1.len() - derivation2.len()..]
                     {
                         entry.insert((fingerprint1, derivation1));
-                        continue
+                        continue;
                     }
                     return Err(Error::CombineInconsistentKeySources(Box::new(xpub)));
                 }
@@ -237,8 +237,12 @@ impl PartiallySignedTransaction {
         for i in 0..self.inputs.len() {
             if let Ok(SigningAlgorithm::Ecdsa) = self.signing_algorithm(i) {
                 match self.bip32_sign_ecdsa(k, i, &mut cache, secp) {
-                    Ok(v) => { used.insert(i, v); },
-                    Err(e) => { errors.insert(i, e); },
+                    Ok(v) => {
+                        used.insert(i, v);
+                    }
+                    Err(e) => {
+                        errors.insert(i, e);
+                    }
                 }
             };
         }
@@ -272,7 +276,7 @@ impl PartiallySignedTransaction {
 
         let input = &mut self.inputs[input_index]; // Index checked in call to `sighash_ecdsa`.
 
-        let mut used = vec![];  // List of pubkeys used to sign the input.
+        let mut used = vec![]; // List of pubkeys used to sign the input.
 
         for (pk, key_source) in input.bip32_derivation.iter() {
             let sk = if let Ok(Some(sk)) = k.get_key(KeyRequest::Bip32(key_source.clone()), secp) {
@@ -289,10 +293,8 @@ impl PartiallySignedTransaction {
                 Ok((msg, sighash_ty)) => (msg, sighash_ty),
             };
 
-            let sig = ecdsa::Signature {
-                sig: secp.sign_ecdsa(&msg, &sk.inner),
-                hash_ty: sighash_ty,
-            };
+            let sig =
+                ecdsa::Signature { sig: secp.sign_ecdsa(&msg, &sk.inner), hash_ty: sighash_ty };
 
             let pk = sk.public_key(secp);
 
@@ -323,35 +325,42 @@ impl PartiallySignedTransaction {
         let utxo = self.spend_utxo(input_index)?;
         let spk = &utxo.script_pubkey; // scriptPubkey for input spend utxo.
 
-        let hash_ty = input.ecdsa_hash_ty()
-            .map_err(|_| SignError::InvalidSighashType)?; // Only support standard sighash types.
+        let hash_ty = input.ecdsa_hash_ty().map_err(|_| SignError::InvalidSighashType)?; // Only support standard sighash types.
 
         match self.output_type(input_index)? {
             Bare => {
                 let sighash = cache.legacy_signature_hash(input_index, spk, hash_ty.to_u32())?;
                 Ok((Message::from(sighash), hash_ty))
-            },
+            }
             Sh => {
-                let script_code = input.redeem_script.as_ref().ok_or(SignError::MissingRedeemScript)?;
-                let sighash = cache.legacy_signature_hash(input_index, script_code, hash_ty.to_u32())?;
+                let script_code =
+                    input.redeem_script.as_ref().ok_or(SignError::MissingRedeemScript)?;
+                let sighash =
+                    cache.legacy_signature_hash(input_index, script_code, hash_ty.to_u32())?;
                 Ok((Message::from(sighash), hash_ty))
-            },
+            }
             Wpkh => {
                 let script_code = ScriptBuf::p2wpkh_script_code(spk).ok_or(SignError::NotWpkh)?;
-                let sighash = cache.segwit_signature_hash(input_index, &script_code, utxo.value, hash_ty)?;
+                let sighash =
+                    cache.segwit_signature_hash(input_index, &script_code, utxo.value, hash_ty)?;
                 Ok((Message::from(sighash), hash_ty))
-            },
+            }
             ShWpkh => {
-                let script_code = ScriptBuf::p2wpkh_script_code(input.redeem_script.as_ref().expect("checked above"))
-                    .ok_or(SignError::NotWpkh)?;
-                let sighash = cache.segwit_signature_hash(input_index, &script_code, utxo.value, hash_ty)?;
+                let script_code = ScriptBuf::p2wpkh_script_code(
+                    input.redeem_script.as_ref().expect("checked above"),
+                )
+                .ok_or(SignError::NotWpkh)?;
+                let sighash =
+                    cache.segwit_signature_hash(input_index, &script_code, utxo.value, hash_ty)?;
                 Ok((Message::from(sighash), hash_ty))
-            },
+            }
             Wsh | ShWsh => {
-                let script_code = input.witness_script.as_ref().ok_or(SignError::MissingWitnessScript)?;
-                let sighash = cache.segwit_signature_hash(input_index, script_code, utxo.value, hash_ty)?;
+                let script_code =
+                    input.witness_script.as_ref().ok_or(SignError::MissingWitnessScript)?;
+                let sighash =
+                    cache.segwit_signature_hash(input_index, script_code, utxo.value, hash_ty)?;
                 Ok((Message::from(sighash), hash_ty))
-            },
+            }
             Tr => {
                 // This PSBT signing API is WIP, taproot to come shortly.
                 Err(SignError::Unsupported)
@@ -368,7 +377,7 @@ impl PartiallySignedTransaction {
             let vout = self.unsigned_tx.input[input_index].previous_output.vout;
             &non_witness_utxo.output[vout as usize]
         } else {
-             return Err(SignError::MissingSpendUtxo);
+            return Err(SignError::MissingSpendUtxo);
         };
         Ok(utxo)
     }
@@ -481,13 +490,21 @@ pub trait GetKey {
     /// - `Some(key)` if the key is found.
     /// - `None` if the key was not found but no error was encountered.
     /// - `Err` if an error was encountered while looking for the key.
-    fn get_key<C: Signing>(&self, key_request: KeyRequest, secp: &Secp256k1<C>) -> Result<Option<PrivateKey>, Self::Error>;
+    fn get_key<C: Signing>(
+        &self,
+        key_request: KeyRequest,
+        secp: &Secp256k1<C>,
+    ) -> Result<Option<PrivateKey>, Self::Error>;
 }
 
 impl GetKey for ExtendedPrivKey {
     type Error = GetKeyError;
 
-    fn get_key<C: Signing>(&self, key_request: KeyRequest, secp: &Secp256k1<C>) -> Result<Option<PrivateKey>, Self::Error> {
+    fn get_key<C: Signing>(
+        &self,
+        key_request: KeyRequest,
+        secp: &Secp256k1<C>,
+    ) -> Result<Option<PrivateKey>, Self::Error> {
         match key_request {
             KeyRequest::Pubkey(_) => Err(GetKeyError::NotSupported),
             KeyRequest::Bip32((fingerprint, path)) => {
@@ -577,7 +594,8 @@ impl fmt::Display for GetKeyError {
 
         match *self {
             Bip32(ref e) => write_err!(f, "a bip23 error"; e),
-            NotSupported => f.write_str("the GetKey operation is not supported for this key request"),
+            NotSupported =>
+                f.write_str("the GetKey operation is not supported for this key request"),
         }
     }
 }
@@ -596,9 +614,7 @@ impl std::error::Error for GetKeyError {
 }
 
 impl From<bip32::Error> for GetKeyError {
-    fn from(e: bip32::Error) -> Self {
-        GetKeyError::Bip32(e)
-    }
+    fn from(e: bip32::Error) -> Self { GetKeyError::Bip32(e) }
 }
 
 /// The various output types supported by the Bitcoin network.
@@ -676,7 +692,7 @@ pub enum SignError {
     /// Attempt to sign an input with the wrong signing algorithm.
     WrongSigningAlgorithm,
     /// Signing request currently unsupported.
-    Unsupported
+    Unsupported,
 }
 
 impl fmt::Display for SignError {
@@ -698,7 +714,8 @@ impl fmt::Display for SignError {
             SighashComputation(e) => write!(f, "sighash: {}", e),
             UnknownOutputType => write!(f, "unable to determine the output type"),
             KeyNotFound => write!(f, "unable to find key"),
-            WrongSigningAlgorithm => write!(f, "attempt to sign an input with the wrong signing algorithm"),
+            WrongSigningAlgorithm =>
+                write!(f, "attempt to sign an input with the wrong signing algorithm"),
             Unsupported => write!(f, "signing request currently unsupported"),
         }
     }
@@ -712,37 +729,37 @@ impl std::error::Error for SignError {
 
         match *self {
             IndexOutOfBounds(_, _)
-                | InvalidSighashType
-                | MissingInputUtxo
-                | MissingRedeemScript
-                | MissingSpendUtxo
-                | MissingWitnessScript
-                | MismatchedAlgoKey
-                | NotEcdsa
-                | NotWpkh
-                | UnknownOutputType
-                | KeyNotFound
-                | WrongSigningAlgorithm
-                | Unsupported => None,
+            | InvalidSighashType
+            | MissingInputUtxo
+            | MissingRedeemScript
+            | MissingSpendUtxo
+            | MissingWitnessScript
+            | MismatchedAlgoKey
+            | NotEcdsa
+            | NotWpkh
+            | UnknownOutputType
+            | KeyNotFound
+            | WrongSigningAlgorithm
+            | Unsupported => None,
             SighashComputation(ref e) => Some(e),
         }
     }
 }
 
 impl From<sighash::Error> for SignError {
-    fn from(e: sighash::Error) -> Self {
-        SignError::SighashComputation(e)
-    }
+    fn from(e: sighash::Error) -> Self { SignError::SighashComputation(e) }
 }
 
 #[cfg(feature = "base64")]
 mod display_from_str {
-    use super::{PartiallySignedTransaction, Error};
-    use core::fmt::{Display, Formatter, self};
+    use core::fmt::{self, Display, Formatter};
     use core::str::FromStr;
+
     use base64::display::Base64Display;
     use bitcoin_internals::write_err;
 
+    use super::{Error, PartiallySignedTransaction};
+
     /// Error encountered during PSBT decoding from Base64 string.
     #[derive(Debug)]
     #[cfg_attr(docsrs, doc(cfg(feature = "base64")))]
@@ -751,7 +768,7 @@ mod display_from_str {
         /// Error in internal PSBT data structure.
         PsbtEncoding(Error),
         /// Error in PSBT Base64 encoding.
-        Base64Encoding(::base64::DecodeError)
+        Base64Encoding(::base64::DecodeError),
     }
 
     impl Display for PsbtParseError {
@@ -801,26 +818,24 @@ pub use self::display_from_str::PsbtParseError;
 
 #[cfg(test)]
 mod tests {
-    use super::*;
+    use std::collections::BTreeMap;
 
-    use crate::blockdata::locktime::absolute;
-    use crate::hashes::{sha256, hash160, Hash, ripemd160};
-    use crate::psbt::serialize::{Serialize, Deserialize};
-
-    use secp256k1::{Secp256k1, self};
+    use secp256k1::{self, Secp256k1};
     #[cfg(feature = "rand-std")]
     use secp256k1::{All, SecretKey};
 
-    use crate::blockdata::script::ScriptBuf;
-    use crate::blockdata::transaction::{Transaction, TxIn, TxOut, OutPoint, Sequence};
-    use crate::network::constants::Network::Bitcoin;
+    use super::*;
     use crate::bip32::{ChildNumber, ExtendedPrivKey, ExtendedPubKey, KeySource};
-    use crate::psbt::map::{Output, Input};
-    use crate::psbt::raw;
-    use crate::internal_macros::hex;
-
-    use std::collections::BTreeMap;
+    use crate::blockdata::locktime::absolute;
+    use crate::blockdata::script::ScriptBuf;
+    use crate::blockdata::transaction::{OutPoint, Sequence, Transaction, TxIn, TxOut};
     use crate::blockdata::witness::Witness;
+    use crate::hashes::{hash160, ripemd160, sha256, Hash};
+    use crate::internal_macros::hex;
+    use crate::network::constants::Network::Bitcoin;
+    use crate::psbt::map::{Input, Output};
+    use crate::psbt::raw;
+    use crate::psbt::serialize::{Deserialize, Serialize};
 
     #[test]
     fn trivial_psbt() {
@@ -843,14 +858,13 @@ mod tests {
     }
 
     #[test]
-   fn psbt_uncompressed_key() {
+    fn psbt_uncompressed_key() {
+        let psbt: PartiallySignedTransaction = hex_psbt!("70736274ff01003302000000010000000000000000000000000000000000000000000000000000000000000000ffffffff00ffffffff000000000000420204bb0d5d0cca36e7b9c80f63bc04c1240babb83bcd2803ef7ac8b6e2af594291daec281e856c98d210c5ab14dfd5828761f8ee7d5f45ca21ad3e4c4b41b747a3a047304402204f67e2afb76142d44fae58a2495d33a3419daa26cd0db8d04f3452b63289ac0f022010762a9fb67e94cc5cad9026f6dc99ff7f070f4278d30fbc7d0c869dd38c7fe70100").unwrap();
 
-       let psbt: PartiallySignedTransaction = hex_psbt!("70736274ff01003302000000010000000000000000000000000000000000000000000000000000000000000000ffffffff00ffffffff000000000000420204bb0d5d0cca36e7b9c80f63bc04c1240babb83bcd2803ef7ac8b6e2af594291daec281e856c98d210c5ab14dfd5828761f8ee7d5f45ca21ad3e4c4b41b747a3a047304402204f67e2afb76142d44fae58a2495d33a3419daa26cd0db8d04f3452b63289ac0f022010762a9fb67e94cc5cad9026f6dc99ff7f070f4278d30fbc7d0c869dd38c7fe70100").unwrap();
-
-       assert!(psbt.inputs[0].partial_sigs.len() == 1);
-       let pk = psbt.inputs[0].partial_sigs.iter().next().unwrap().0;
-       assert!(!pk.compressed);
-   }
+        assert!(psbt.inputs[0].partial_sigs.len() == 1);
+        let pk = psbt.inputs[0].partial_sigs.iter().next().unwrap().0;
+        assert!(!pk.compressed);
+    }
 
     #[test]
     fn serialize_then_deserialize_output() {
@@ -881,8 +895,12 @@ mod tests {
         hd_keypaths.insert(pk.public_key, (fprint, dpath.into()));
 
         let expected: Output = Output {
-            redeem_script: Some(ScriptBuf::from_hex("76a914d0c59903c5bac2868760e90fd521a4665aa7652088ac").unwrap()),
-            witness_script: Some(ScriptBuf::from_hex("a9143545e6e33b832c47050f24d3eeb93c9c03948bc787").unwrap()),
+            redeem_script: Some(
+                ScriptBuf::from_hex("76a914d0c59903c5bac2868760e90fd521a4665aa7652088ac").unwrap(),
+            ),
+            witness_script: Some(
+                ScriptBuf::from_hex("a9143545e6e33b832c47050f24d3eeb93c9c03948bc787").unwrap(),
+            ),
             bip32_derivation: hd_keypaths,
             ..Default::default()
         };
@@ -898,25 +916,31 @@ mod tests {
             unsigned_tx: Transaction {
                 version: 2,
                 lock_time: absolute::LockTime::from_consensus(1257139),
-                input: vec![
-                    TxIn {
-                        previous_output: OutPoint {
-                            txid: "f61b1742ca13176464adb3cb66050c00787bb3a4eead37e985f2df1e37718126".parse().unwrap(),
-                            vout: 0,
-                        },
-                        script_sig: ScriptBuf::new(),
-                        sequence: Sequence::ENABLE_LOCKTIME_NO_RBF,
-                        witness: Witness::default(),
-                    }
-                ],
+                input: vec![TxIn {
+                    previous_output: OutPoint {
+                        txid: "f61b1742ca13176464adb3cb66050c00787bb3a4eead37e985f2df1e37718126"
+                            .parse()
+                            .unwrap(),
+                        vout: 0,
+                    },
+                    script_sig: ScriptBuf::new(),
+                    sequence: Sequence::ENABLE_LOCKTIME_NO_RBF,
+                    witness: Witness::default(),
+                }],
                 output: vec![
                     TxOut {
                         value: 99999699,
-                        script_pubkey: ScriptBuf::from_hex("76a914d0c59903c5bac2868760e90fd521a4665aa7652088ac").unwrap(),
+                        script_pubkey: ScriptBuf::from_hex(
+                            "76a914d0c59903c5bac2868760e90fd521a4665aa7652088ac",
+                        )
+                        .unwrap(),
                     },
                     TxOut {
                         value: 100000000,
-                        script_pubkey: ScriptBuf::from_hex("a9143545e6e33b832c47050f24d3eeb93c9c03948bc787").unwrap(),
+                        script_pubkey: ScriptBuf::from_hex(
+                            "a9143545e6e33b832c47050f24d3eeb93c9c03948bc787",
+                        )
+                        .unwrap(),
                     },
                 ],
             },
@@ -935,10 +959,7 @@ mod tests {
     #[test]
     fn serialize_then_deserialize_psbtkvpair() {
         let expected = raw::Pair {
-            key: raw::Key {
-                type_value: 0u8,
-                key: vec![42u8, 69u8],
-            },
+            key: raw::Key { type_value: 0u8, key: vec![42u8, 69u8] },
             value: vec![69u8, 42u8, 4u8],
         };
 
@@ -965,33 +986,39 @@ mod tests {
         let tx = Transaction {
             version: 1,
             lock_time: absolute::LockTime::ZERO,
-            input: vec![
-                TxIn {
-                    previous_output: OutPoint {
-                        txid: "e567952fb6cc33857f392efa3a46c995a28f69cca4bb1b37e0204dab1ec7a389".parse().unwrap(),
-                        vout: 1,
-                    },
-                    script_sig: ScriptBuf::from_hex("160014be18d152a9b012039daf3da7de4f53349eecb985").unwrap(),
-                    sequence: Sequence::MAX,
-                    witness: Witness::from_slice(&[hex!("03d2e15674941bad4a996372cb87e1856d3652606d98562fe39c5e9e7e413f2105")]),
-                }
-            ],
-            output: vec![
-                TxOut {
-                    value: 190303501938,
-                    script_pubkey: ScriptBuf::from_hex("a914339725ba21efd62ac753a9bcd067d6c7a6a39d0587").unwrap(),
+            input: vec![TxIn {
+                previous_output: OutPoint {
+                    txid: "e567952fb6cc33857f392efa3a46c995a28f69cca4bb1b37e0204dab1ec7a389"
+                        .parse()
+                        .unwrap(),
+                    vout: 1,
                 },
-            ],
+                script_sig: ScriptBuf::from_hex("160014be18d152a9b012039daf3da7de4f53349eecb985")
+                    .unwrap(),
+                sequence: Sequence::MAX,
+                witness: Witness::from_slice(&[hex!(
+                    "03d2e15674941bad4a996372cb87e1856d3652606d98562fe39c5e9e7e413f2105"
+                )]),
+            }],
+            output: vec![TxOut {
+                value: 190303501938,
+                script_pubkey: ScriptBuf::from_hex(
+                    "a914339725ba21efd62ac753a9bcd067d6c7a6a39d0587",
+                )
+                .unwrap(),
+            }],
         };
-        let unknown: BTreeMap<raw::Key, Vec<u8>> = vec![(
-            raw::Key { type_value: 1, key: vec![0, 1] },
-            vec![3, 4 ,5],
-        )].into_iter().collect();
+        let unknown: BTreeMap<raw::Key, Vec<u8>> =
+            vec![(raw::Key { type_value: 1, key: vec![0, 1] }, vec![3, 4, 5])]
+                .into_iter()
+                .collect();
         let key_source = ("deadbeef".parse().unwrap(), "m/0'/1".parse().unwrap());
         let keypaths: BTreeMap<secp256k1::PublicKey, KeySource> = vec![(
             "0339880dc92394b7355e3d0439fa283c31de7590812ea011c4245c0674a685e883".parse().unwrap(),
             key_source.clone(),
-        )].into_iter().collect();
+        )]
+        .into_iter()
+        .collect();
 
         let proprietary: BTreeMap<raw::ProprietaryKey, Vec<u8>> = vec![(
             raw::ProprietaryKey {
@@ -1000,7 +1027,9 @@ mod tests {
                 key: "test_key".as_bytes().to_vec(),
             },
             vec![5, 6, 7],
-        )].into_iter().collect();
+        )]
+        .into_iter()
+        .collect();
 
         let psbt = PartiallySignedTransaction {
             version: 0,
@@ -1059,19 +1088,18 @@ mod tests {
     }
 
     mod bip_vectors {
-        use super::*;
-
+        use std::collections::BTreeMap;
         #[cfg(feature = "base64")]
         use std::str::FromStr;
 
-        use crate::blockdata::script::ScriptBuf;
-        use crate::blockdata::transaction::{Transaction, TxIn, TxOut, OutPoint, Sequence};
+        use super::*;
         use crate::blockdata::locktime::absolute;
-        use crate::psbt::map::{Map, Input, Output};
-        use crate::psbt::{raw, PartiallySignedTransaction, Error};
-        use crate::sighash::EcdsaSighashType;
-        use std::collections::BTreeMap;
+        use crate::blockdata::script::ScriptBuf;
+        use crate::blockdata::transaction::{OutPoint, Sequence, Transaction, TxIn, TxOut};
         use crate::blockdata::witness::Witness;
+        use crate::psbt::map::{Input, Map, Output};
+        use crate::psbt::{raw, Error, PartiallySignedTransaction};
+        use crate::sighash::EcdsaSighashType;
 
         #[test]
         #[should_panic(expected = "InvalidMagic")]
@@ -1242,11 +1270,15 @@ mod tests {
             assert_eq!(unserialized.serialize_hex(), base16str);
             assert_eq!(unserialized, hex_psbt!(base16str).unwrap());
 
-            #[cfg(feature = "base64")] {
+            #[cfg(feature = "base64")]
+            {
                 let base64str = "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";
                 assert_eq!(PartiallySignedTransaction::from_str(base64str).unwrap(), unserialized);
                 assert_eq!(base64str, unserialized.to_string());
-                assert_eq!(PartiallySignedTransaction::from_str(base64str).unwrap(), hex_psbt!(base16str).unwrap());
+                assert_eq!(
+                    PartiallySignedTransaction::from_str(base64str).unwrap(),
+                    hex_psbt!(base16str).unwrap()
+                );
             }
         }
 
@@ -1260,7 +1292,8 @@ mod tests {
             assert!(&psbt.inputs[0].final_script_sig.is_some());
 
             let redeem_script = psbt.inputs[1].redeem_script.as_ref().unwrap();
-            let expected_out = ScriptBuf::from_hex("a9143545e6e33b832c47050f24d3eeb93c9c03948bc787").unwrap();
+            let expected_out =
+                ScriptBuf::from_hex("a9143545e6e33b832c47050f24d3eeb93c9c03948bc787").unwrap();
 
             assert!(redeem_script.is_v0_p2wpkh());
             assert_eq!(
@@ -1286,9 +1319,8 @@ mod tests {
 
             assert_eq!(tx_input.previous_output.txid, psbt_non_witness_utxo.txid());
             assert!(psbt_non_witness_utxo.output[tx_input.previous_output.vout as usize]
-                    .script_pubkey
-                    .is_p2pkh()
-            );
+                .script_pubkey
+                .is_p2pkh());
             assert_eq!(
                 psbt.inputs[0].sighash_type.as_ref().unwrap().ecdsa_hash_ty().unwrap(),
                 EcdsaSighashType::All
@@ -1306,7 +1338,8 @@ mod tests {
             assert!(&psbt.inputs[1].final_script_sig.is_none());
 
             let redeem_script = psbt.inputs[1].redeem_script.as_ref().unwrap();
-            let expected_out = ScriptBuf::from_hex("a9143545e6e33b832c47050f24d3eeb93c9c03948bc787").unwrap();
+            let expected_out =
+                ScriptBuf::from_hex("a9143545e6e33b832c47050f24d3eeb93c9c03948bc787").unwrap();
 
             assert!(redeem_script.is_v0_p2wpkh());
             assert_eq!(
@@ -1330,7 +1363,8 @@ mod tests {
             assert!(&psbt.inputs[0].final_script_sig.is_none());
 
             let redeem_script = psbt.inputs[0].redeem_script.as_ref().unwrap();
-            let expected_out = ScriptBuf::from_hex("a9146345200f68d189e1adc0df1c4d16ea8f14c0dbeb87").unwrap();
+            let expected_out =
+                ScriptBuf::from_hex("a9146345200f68d189e1adc0df1c4d16ea8f14c0dbeb87").unwrap();
 
             assert!(redeem_script.is_v0_p2wsh());
             assert_eq!(
@@ -1355,10 +1389,7 @@ mod tests {
             );
 
             let mut unknown: BTreeMap<raw::Key, Vec<u8>> = BTreeMap::new();
-            let key: raw::Key = raw::Key {
-                type_value: 0x0fu8,
-                key: hex!("010203040506070809"),
-            };
+            let key: raw::Key = raw::Key { type_value: 0x0fu8, key: hex!("010203040506070809") };
             let value: Vec<u8> = hex!("0102030405060708090a0b0c0d0e0f");
 
             unknown.insert(key, value);
@@ -1378,7 +1409,10 @@ mod tests {
             #[cfg(feature = "std")]
             assert_eq!(err.to_string(), "invalid taproot signature");
             #[cfg(not(feature = "std"))]
-            assert_eq!(err.to_string(), "invalid taproot signature: invalid taproot signature size: 66");
+            assert_eq!(
+                err.to_string(),
+                "invalid taproot signature: invalid taproot signature size: 66"
+            );
             let err = hex_psbt!("70736274ff010071020000000127744ababf3027fe0d6cf23a96eee2efb188ef52301954585883e69b6624b2420000000000ffffffff02787c01000000000016001483a7e34bd99ff03a4962ef8a1a101bb295461ece606b042a010000001600147ac369df1b20e033d6116623957b0ac49f3c52e8000000000001012b00f2052a010000002251205a2c2cf5b52cf31f83ad2e8da63ff03183ecd8f609c7510ae8a48e03910a0757221602fe349064c98d6e2a853fa3c9b12bd8b304a19c195c60efa7ee2393046d3fa2321900772b2da75600008001000080000000800100000000000000000000").unwrap_err();
             assert_eq!(err.to_string(), "invalid xonly public key");
             let err = hex_psbt!("70736274ff01007d020000000127744ababf3027fe0d6cf23a96eee2efb188ef52301954585883e69b6624b2420000000000ffffffff02887b0100000000001600142382871c7e8421a00093f754d91281e675874b9f606b042a010000002251205a2c2cf5b52cf31f83ad2e8da63ff03183ecd8f609c7510ae8a48e03910a0757000000000001012b00f2052a010000002251205a2c2cf5b52cf31f83ad2e8da63ff03183ecd8f609c7510ae8a48e03910a0757000001052102fe349064c98d6e2a853fa3c9b12bd8b304a19c195c60efa7ee2393046d3fa23200").unwrap_err();
@@ -1394,12 +1428,18 @@ mod tests {
             #[cfg(feature = "std")]
             assert_eq!(err.to_string(), "invalid taproot signature");
             #[cfg(not(feature = "std"))]
-            assert_eq!(err.to_string(), "invalid taproot signature: invalid taproot signature size: 66");
+            assert_eq!(
+                err.to_string(),
+                "invalid taproot signature: invalid taproot signature size: 66"
+            );
             let err = hex_psbt!("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").unwrap_err();
             #[cfg(feature = "std")]
             assert_eq!(err.to_string(), "invalid taproot signature");
             #[cfg(not(feature = "std"))]
-            assert_eq!(err.to_string(), "invalid taproot signature: invalid taproot signature size: 57");
+            assert_eq!(
+                err.to_string(),
+                "invalid taproot signature: invalid taproot signature size: 57"
+            );
             let err = hex_psbt!("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").unwrap_err();
             assert_eq!(err.to_string(), "invalid control block");
             let err = hex_psbt!("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").unwrap_err();
@@ -1575,11 +1615,10 @@ mod tests {
     #[test]
     fn serialize_and_deserialize_proprietary() {
         let mut psbt: PartiallySignedTransaction = hex_psbt!("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").unwrap();
-        psbt.proprietary.insert(raw::ProprietaryKey {
-            prefix: b"test".to_vec(),
-            subtype: 0u8,
-            key: b"test".to_vec(),
-        }, b"test".to_vec());
+        psbt.proprietary.insert(
+            raw::ProprietaryKey { prefix: b"test".to_vec(), subtype: 0u8, key: b"test".to_vec() },
+            b"test".to_vec(),
+        );
         assert!(!psbt.proprietary.is_empty());
         let rtt: PartiallySignedTransaction = hex_psbt!(&psbt.serialize_hex()).unwrap();
         assert!(!rtt.proprietary.is_empty());
@@ -1725,31 +1764,31 @@ mod tests {
         let mut t2 = t.clone();
         t2.inputs[0].non_witness_utxo = None;
         match t2.fee().unwrap_err() {
-            Error::MissingUtxo => {},
-            e => panic!("unexpected error: {:?}", e)
+            Error::MissingUtxo => {}
+            e => panic!("unexpected error: {:?}", e),
         }
         //  negative fee
         let mut t3 = t.clone();
         t3.unsigned_tx.output[0].value = prev_output_val;
         match t3.fee().unwrap_err() {
-            Error::NegativeFee => {},
-            e => panic!("unexpected error: {:?}", e)
+            Error::NegativeFee => {}
+            e => panic!("unexpected error: {:?}", e),
         }
         // overflow
         t.unsigned_tx.output[0].value = u64::max_value();
         t.unsigned_tx.output[1].value = u64::max_value();
         match t.fee().unwrap_err() {
-            Error::FeeOverflow => {},
-            e => panic!("unexpected error: {:?}", e)
+            Error::FeeOverflow => {}
+            e => panic!("unexpected error: {:?}", e),
         }
     }
 
     #[test]
     #[cfg(feature = "rand-std")]
     fn sign_psbt() {
-        use crate::WPubkeyHash;
         use crate::address::WitnessProgram;
-        use crate::bip32::{Fingerprint, DerivationPath};
+        use crate::bip32::{DerivationPath, Fingerprint};
+        use crate::WPubkeyHash;
 
         let unsigned_tx = Transaction {
             version: 2,
@@ -1767,7 +1806,7 @@ mod tests {
         key_map.insert(pk, priv_key);
 
         // First input we can spend. See comment above on key_map for why we use defaults here.
-        let txout_wpkh = TxOut{
+        let txout_wpkh = TxOut {
             value: 10,
             script_pubkey: ScriptBuf::new_v0_p2wpkh(&WPubkeyHash::hash(&pk.to_bytes())),
         };
@@ -1778,13 +1817,10 @@ mod tests {
         psbt.inputs[0].bip32_derivation = map;
 
         // Second input is unspendable by us e.g., from another wallet that supports future upgrades.
-        let unknown_prog = WitnessProgram::new(
-            crate::address::WitnessVersion::V4, vec![0xaa; 34]
-        ).unwrap();
-        let txout_unknown_future = TxOut{
-            value: 10,
-            script_pubkey: ScriptBuf::new_witness_program(&unknown_prog),
-        };
+        let unknown_prog =
+            WitnessProgram::new(crate::address::WitnessVersion::V4, vec![0xaa; 34]).unwrap();
+        let txout_unknown_future =
+            TxOut { value: 10, script_pubkey: ScriptBuf::new_witness_program(&unknown_prog) };
         psbt.inputs[1].witness_utxo = Some(txout_unknown_future);
 
         let sigs = psbt.sign(&key_map, &secp).unwrap();
diff --git a/bitcoin/src/psbt/raw.rs b/bitcoin/src/psbt/raw.rs
index 94ab4eab..aa312413 100644
--- a/bitcoin/src/psbt/raw.rs
+++ b/bitcoin/src/psbt/raw.rs
@@ -6,16 +6,17 @@
 //! <https://github.com/bitcoin/bips/blob/master/bip-0174.mediawiki>.
 //!
 
-use crate::prelude::*;
-use core::fmt;
 use core::convert::TryFrom;
+use core::fmt;
 
+use super::serialize::{Deserialize, Serialize};
+use crate::consensus::encode::{
+    self, deserialize, serialize, Decodable, Encodable, ReadExt, VarInt, WriteExt, MAX_VEC_SIZE,
+};
 use crate::io;
-use crate::consensus::encode::{self, ReadExt, WriteExt, Decodable, Encodable, VarInt, serialize, deserialize, MAX_VEC_SIZE};
+use crate::prelude::*;
 use crate::psbt::Error;
 
-use super::serialize::{Serialize, Deserialize};
-
 /// A PSBT key in its raw byte form.
 #[derive(Debug, PartialEq, Hash, Eq, Clone, Ord, PartialOrd)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
@@ -51,7 +52,10 @@ pub type ProprietaryType = u8;
 #[derive(Clone, PartialEq, Eq, PartialOrd, Ord, Hash, Debug)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[cfg_attr(feature = "serde", serde(crate = "actual_serde"))]
-pub struct ProprietaryKey<Subtype=ProprietaryType> where Subtype: Copy + From<u8> + Into<u8> {
+pub struct ProprietaryKey<Subtype = ProprietaryType>
+where
+    Subtype: Copy + From<u8> + Into<u8>,
+{
     /// Proprietary type prefix used for grouping together keys under some
     /// application and avoid namespace collision
     #[cfg_attr(feature = "serde", serde(with = "crate::serde_utils::hex_bytes"))]
@@ -83,7 +87,7 @@ impl Key {
             return Err(encode::Error::OversizedVectorAllocation {
                 requested: key_byte_size as usize,
                 max: MAX_VEC_SIZE,
-            })?
+            })?;
         }
 
         let type_value: u8 = Decodable::consensus_decode(r)?;
@@ -100,7 +104,9 @@ impl Key {
 impl Serialize for Key {
     fn serialize(&self) -> Vec<u8> {
         let mut buf = Vec::new();
-        VarInt((self.key.len() + 1) as u64).consensus_encode(&mut buf).expect("in-memory writers don't error");
+        VarInt((self.key.len() + 1) as u64)
+            .consensus_encode(&mut buf)
+            .expect("in-memory writers don't error");
 
         self.type_value.consensus_encode(&mut buf).expect("in-memory writers don't error");
 
@@ -131,14 +137,14 @@ impl Deserialize for Pair {
 
 impl Pair {
     pub(crate) fn decode<R: io::Read + ?Sized>(r: &mut R) -> Result<Self, Error> {
-        Ok(Pair {
-            key: Key::decode(r)?,
-            value: Decodable::consensus_decode(r)?,
-        })
+        Ok(Pair { key: Key::decode(r)?, value: Decodable::consensus_decode(r)? })
     }
 }
 
-impl<Subtype> Encodable for ProprietaryKey<Subtype> where Subtype: Copy + From<u8> + Into<u8> {
+impl<Subtype> Encodable for ProprietaryKey<Subtype>
+where
+    Subtype: Copy + From<u8> + Into<u8>,
+{
     fn consensus_encode<W: io::Write + ?Sized>(&self, w: &mut W) -> Result<usize, io::Error> {
         let mut len = self.prefix.consensus_encode(w)? + 1;
         w.emit_u8(self.subtype.into())?;
@@ -148,7 +154,10 @@ impl<Subtype> Encodable for ProprietaryKey<Subtype> where Subtype: Copy + From<u
     }
 }
 
-impl<Subtype> Decodable for ProprietaryKey<Subtype> where Subtype: Copy + From<u8> + Into<u8> {
+impl<Subtype> Decodable for ProprietaryKey<Subtype>
+where
+    Subtype: Copy + From<u8> + Into<u8>,
+{
     fn consensus_decode<R: io::Read + ?Sized>(r: &mut R) -> Result<Self, encode::Error> {
         let prefix = Vec::<u8>::consensus_decode(r)?;
         let subtype = Subtype::from(r.read_u8()?);
@@ -158,19 +167,18 @@ impl<Subtype> Decodable for ProprietaryKey<Subtype> where Subtype: Copy + From<u
     }
 }
 
-impl<Subtype> ProprietaryKey<Subtype> where Subtype: Copy + From<u8> + Into<u8> {
+impl<Subtype> ProprietaryKey<Subtype>
+where
+    Subtype: Copy + From<u8> + Into<u8>,
+{
     /// Constructs full [Key] corresponding to this proprietary key type
-    pub fn to_key(&self) -> Key {
-        Key {
-            type_value: 0xFC,
-            key: serialize(self)
-        }
-    }
+    pub fn to_key(&self) -> Key { Key { type_value: 0xFC, key: serialize(self) } }
 }
 
 impl<Subtype> TryFrom<Key> for ProprietaryKey<Subtype>
 where
-    Subtype:Copy + From<u8> + Into<u8> {
+    Subtype: Copy + From<u8> + Into<u8>,
+{
     type Error = Error;
 
     /// Constructs a [`ProprietaryKey`] from a [`Key`].
@@ -179,7 +187,7 @@ where
     /// Returns [`Error::InvalidProprietaryKey`] if `key` does not start with `0xFC` byte.
     fn try_from(key: Key) -> Result<Self, Self::Error> {
         if key.type_value != 0xFC {
-            return Err(Error::InvalidProprietaryKey)
+            return Err(Error::InvalidProprietaryKey);
         }
 
         Ok(deserialize(&key.key)?)
@@ -194,7 +202,7 @@ pub(crate) fn read_to_end<D: io::Read>(mut d: D) -> Result<Vec<u8>, io::Error> {
         match d.read(&mut buf) {
             Ok(0) => break,
             Ok(n) => result.extend_from_slice(&buf[0..n]),
-            Err(ref e) if e.kind() == io::ErrorKind::Interrupted => {},
+            Err(ref e) if e.kind() == io::ErrorKind::Interrupted => {}
             Err(e) => return Err(e),
         };
     }
diff --git a/bitcoin/src/psbt/serialize.rs b/bitcoin/src/psbt/serialize.rs
index 5f965824..c3a21d54 100644
--- a/bitcoin/src/psbt/serialize.rs
+++ b/bitcoin/src/psbt/serialize.rs
@@ -6,31 +6,26 @@
 //! according to the BIP-174 specification.
 //!
 
-use core::convert::TryFrom;
-use core::convert::TryInto;
+use core::convert::{TryFrom, TryInto};
 
-use crate::VarInt;
-use crate::prelude::*;
-
-use crate::io;
-
-use crate::blockdata::script::ScriptBuf;
-use crate::blockdata::witness::Witness;
-use crate::blockdata::transaction::{Transaction, TxOut};
-use crate::consensus::encode::{self, serialize, Decodable, Encodable, deserialize_partial};
-use crate::taproot::TapTree;
 use secp256k1::{self, XOnlyPublicKey};
-use crate::bip32::{ChildNumber, Fingerprint, KeySource};
-use crate::hashes::{hash160, ripemd160, sha256, sha256d, Hash};
-use crate::crypto::{ecdsa, taproot};
-use crate::psbt::{Error, PartiallySignedTransaction};
-use crate::taproot::{TapNodeHash, TapLeafHash, ControlBlock, LeafVersion};
-use crate::crypto::key::PublicKey;
 
-use super::map::{Map, Input, Output, PsbtSighashType};
+use super::map::{Input, Map, Output, PsbtSighashType};
 use super::Psbt;
-
-use crate::taproot::TaprootBuilder;
+use crate::bip32::{ChildNumber, Fingerprint, KeySource};
+use crate::blockdata::script::ScriptBuf;
+use crate::blockdata::transaction::{Transaction, TxOut};
+use crate::blockdata::witness::Witness;
+use crate::consensus::encode::{self, deserialize_partial, serialize, Decodable, Encodable};
+use crate::crypto::key::PublicKey;
+use crate::crypto::{ecdsa, taproot};
+use crate::hashes::{hash160, ripemd160, sha256, sha256d, Hash};
+use crate::prelude::*;
+use crate::psbt::{Error, PartiallySignedTransaction};
+use crate::taproot::{
+    ControlBlock, LeafVersion, TapLeafHash, TapNodeHash, TapTree, TaprootBuilder,
+};
+use crate::{io, VarInt};
 /// A trait for serializing a value as raw data for insertion into PSBT
 /// key-value maps.
 pub(crate) trait Serialize {
@@ -46,9 +41,7 @@ pub(crate) trait Deserialize: Sized {
 
 impl PartiallySignedTransaction {
     /// Serialize a value as bytes in hex.
-    pub fn serialize_hex(&self) -> String {
-        self.serialize().to_lower_hex_string()
-    }
+    pub fn serialize_hex(&self) -> String { self.serialize().to_lower_hex_string() }
 
     /// Serialize as raw binary data
     pub fn serialize(&self) -> Vec<u8> {
@@ -72,7 +65,6 @@ impl PartiallySignedTransaction {
         buf
     }
 
-
     /// Deserialize a value from raw binary data.
     pub fn deserialize(bytes: &[u8]) -> Result<Self, Error> {
         const MAGIC_BYTES: &[u8] = b"psbt";
@@ -133,15 +125,11 @@ impl_psbt_hash_de_serialize!(sha256d::Hash);
 impl_psbt_de_serialize!(Vec<TapLeafHash>);
 
 impl Serialize for ScriptBuf {
-    fn serialize(&self) -> Vec<u8> {
-        self.to_bytes()
-    }
+    fn serialize(&self) -> Vec<u8> { self.to_bytes() }
 }
 
 impl Deserialize for ScriptBuf {
-    fn deserialize(bytes: &[u8]) -> Result<Self, Error> {
-        Ok(Self::from(bytes.to_vec()))
-    }
+    fn deserialize(bytes: &[u8]) -> Result<Self, Error> { Ok(Self::from(bytes.to_vec())) }
 }
 
 impl Serialize for PublicKey {
@@ -154,28 +142,22 @@ impl Serialize for PublicKey {
 
 impl Deserialize for PublicKey {
     fn deserialize(bytes: &[u8]) -> Result<Self, Error> {
-        PublicKey::from_slice(bytes)
-            .map_err(Error::InvalidPublicKey)
+        PublicKey::from_slice(bytes).map_err(Error::InvalidPublicKey)
     }
 }
 
 impl Serialize for secp256k1::PublicKey {
-    fn serialize(&self) -> Vec<u8> {
-        self.serialize().to_vec()
-    }
+    fn serialize(&self) -> Vec<u8> { self.serialize().to_vec() }
 }
 
 impl Deserialize for secp256k1::PublicKey {
     fn deserialize(bytes: &[u8]) -> Result<Self, Error> {
-        secp256k1::PublicKey::from_slice(bytes)
-            .map_err(Error::InvalidSecp256k1PublicKey)
+        secp256k1::PublicKey::from_slice(bytes).map_err(Error::InvalidSecp256k1PublicKey)
     }
 }
 
 impl Serialize for ecdsa::Signature {
-    fn serialize(&self) -> Vec<u8> {
-        self.to_vec()
-    }
+    fn serialize(&self) -> Vec<u8> { self.to_vec() }
 }
 
 impl Deserialize for ecdsa::Signature {
@@ -193,21 +175,14 @@ impl Deserialize for ecdsa::Signature {
         // also has a field sighash_u32 (See BIP141). For example, when signing with non-standard
         // 0x05, the sighash message would have the last field as 0x05u32 while, the verification
         // would use check the signature assuming sighash_u32 as `0x01`.
-        ecdsa::Signature::from_slice(bytes)
-            .map_err(|e| match e {
-                ecdsa::Error::EmptySignature => {
-                    Error::InvalidEcdsaSignature(e)
-                }
-                ecdsa::Error::NonStandardSighashType(flag) => {
-                    Error::NonStandardSighashType(flag)
-                }
-                ecdsa::Error::Secp256k1(..) => {
-                    Error::InvalidEcdsaSignature(e)
-                }
-                ecdsa::Error::HexEncoding(..) =>  {
-                    unreachable!("Decoding from slice, not hex")
-                }
-            })
+        ecdsa::Signature::from_slice(bytes).map_err(|e| match e {
+            ecdsa::Error::EmptySignature => Error::InvalidEcdsaSignature(e),
+            ecdsa::Error::NonStandardSighashType(flag) => Error::NonStandardSighashType(flag),
+            ecdsa::Error::Secp256k1(..) => Error::InvalidEcdsaSignature(e),
+            ecdsa::Error::HexEncoding(..) => {
+                unreachable!("Decoding from slice, not hex")
+            }
+        })
     }
 }
 
@@ -228,7 +203,7 @@ impl Serialize for KeySource {
 impl Deserialize for KeySource {
     fn deserialize(bytes: &[u8]) -> Result<Self, Error> {
         if bytes.len() < 4 {
-            return Err(io::Error::from(io::ErrorKind::UnexpectedEof).into())
+            return Err(io::Error::from(io::ErrorKind::UnexpectedEof).into());
         }
 
         let fprint: Fingerprint = bytes[0..4].try_into().expect("4 is the fingerprint length");
@@ -248,21 +223,15 @@ impl Deserialize for KeySource {
 
 // partial sigs
 impl Serialize for Vec<u8> {
-    fn serialize(&self) -> Vec<u8> {
-        self.clone()
-    }
+    fn serialize(&self) -> Vec<u8> { self.clone() }
 }
 
 impl Deserialize for Vec<u8> {
-    fn deserialize(bytes: &[u8]) -> Result<Self, Error> {
-        Ok(bytes.to_vec())
-    }
+    fn deserialize(bytes: &[u8]) -> Result<Self, Error> { Ok(bytes.to_vec()) }
 }
 
 impl Serialize for PsbtSighashType {
-    fn serialize(&self) -> Vec<u8> {
-        serialize(&self.to_u32())
-    }
+    fn serialize(&self) -> Vec<u8> { serialize(&self.to_u32()) }
 }
 
 impl Deserialize for PsbtSighashType {
@@ -274,38 +243,26 @@ impl Deserialize for PsbtSighashType {
 
 // Taproot related ser/deser
 impl Serialize for XOnlyPublicKey {
-    fn serialize(&self) -> Vec<u8> {
-        XOnlyPublicKey::serialize(self).to_vec()
-    }
+    fn serialize(&self) -> Vec<u8> { XOnlyPublicKey::serialize(self).to_vec() }
 }
 
 impl Deserialize for XOnlyPublicKey {
     fn deserialize(bytes: &[u8]) -> Result<Self, Error> {
-        XOnlyPublicKey::from_slice(bytes)
-            .map_err(|_| Error::InvalidXOnlyPublicKey)
+        XOnlyPublicKey::from_slice(bytes).map_err(|_| Error::InvalidXOnlyPublicKey)
     }
 }
 
-impl Serialize for taproot::Signature  {
-    fn serialize(&self) -> Vec<u8> {
-        self.to_vec()
-    }
+impl Serialize for taproot::Signature {
+    fn serialize(&self) -> Vec<u8> { self.to_vec() }
 }
 
 impl Deserialize for taproot::Signature {
     fn deserialize(bytes: &[u8]) -> Result<Self, Error> {
-        taproot::Signature::from_slice(bytes)
-            .map_err(|e| match e {
-                taproot::Error::InvalidSighashType(flag) => {
-                    Error::NonStandardSighashType(flag as u32)
-                }
-                taproot::Error::InvalidSignatureSize(_) => {
-                    Error::InvalidTaprootSignature(e)
-                }
-                taproot::Error::Secp256k1(..) => {
-                    Error::InvalidTaprootSignature(e)
-                }
-            })
+        taproot::Signature::from_slice(bytes).map_err(|e| match e {
+            taproot::Error::InvalidSighashType(flag) => Error::NonStandardSighashType(flag as u32),
+            taproot::Error::InvalidSignatureSize(_) => Error::InvalidTaprootSignature(e),
+            taproot::Error::Secp256k1(..) => Error::InvalidTaprootSignature(e),
+        })
     }
 }
 
@@ -322,7 +279,7 @@ impl Serialize for (XOnlyPublicKey, TapLeafHash) {
 impl Deserialize for (XOnlyPublicKey, TapLeafHash) {
     fn deserialize(bytes: &[u8]) -> Result<Self, Error> {
         if bytes.len() < 32 {
-            return Err(io::Error::from(io::ErrorKind::UnexpectedEof).into())
+            return Err(io::Error::from(io::ErrorKind::UnexpectedEof).into());
         }
         let a: XOnlyPublicKey = Deserialize::deserialize(&bytes[..32])?;
         let b: TapLeafHash = Deserialize::deserialize(&bytes[32..])?;
@@ -331,15 +288,12 @@ impl Deserialize for (XOnlyPublicKey, TapLeafHash) {
 }
 
 impl Serialize for ControlBlock {
-    fn serialize(&self) -> Vec<u8> {
-        ControlBlock::serialize(self)
-    }
+    fn serialize(&self) -> Vec<u8> { ControlBlock::serialize(self) }
 }
 
 impl Deserialize for ControlBlock {
     fn deserialize(bytes: &[u8]) -> Result<Self, Error> {
-        Self::decode(bytes)
-            .map_err(|_| Error::InvalidControlBlock)
+        Self::decode(bytes).map_err(|_| Error::InvalidControlBlock)
     }
 }
 
@@ -356,7 +310,7 @@ impl Serialize for (ScriptBuf, LeafVersion) {
 impl Deserialize for (ScriptBuf, LeafVersion) {
     fn deserialize(bytes: &[u8]) -> Result<Self, Error> {
         if bytes.is_empty() {
-            return Err(io::Error::from(io::ErrorKind::UnexpectedEof).into())
+            return Err(io::Error::from(io::ErrorKind::UnexpectedEof).into());
         }
         // The last byte is LeafVersion.
         let script = ScriptBuf::deserialize(&bytes[..bytes.len() - 1])?;
@@ -366,10 +320,9 @@ impl Deserialize for (ScriptBuf, LeafVersion) {
     }
 }
 
-
 impl Serialize for (Vec<TapLeafHash>, KeySource) {
     fn serialize(&self) -> Vec<u8> {
-        let mut buf = Vec::with_capacity( 32 * self.0.len() + key_source_len(&self.1));
+        let mut buf = Vec::with_capacity(32 * self.0.len() + key_source_len(&self.1));
         self.0.consensus_encode(&mut buf).expect("Vecs don't error allocation");
         // TODO: Add support for writing into a writer for key-source
         buf.extend(self.1.serialize());
@@ -387,11 +340,14 @@ impl Deserialize for (Vec<TapLeafHash>, KeySource) {
 
 impl Serialize for TapTree {
     fn serialize(&self) -> Vec<u8> {
-        let capacity = self.script_leaves().map(|l| {
-            l.script().len() + VarInt(l.script().len() as u64).len() // script version
+        let capacity = self
+            .script_leaves()
+            .map(|l| {
+                l.script().len() + VarInt(l.script().len() as u64).len() // script version
             + 1 // merkle branch
             + 1 // leaf version
-        }).sum::<usize>();
+            })
+            .sum::<usize>();
         let mut buf = Vec::with_capacity(capacity);
         for leaf_info in self.script_leaves() {
             // # Cast Safety:
@@ -416,9 +372,10 @@ impl Deserialize for TapTree {
             if consumed > 0 {
                 bytes_iter.nth(consumed - 1);
             }
-            let leaf_version = LeafVersion::from_consensus(*version)
-                .map_err(|_| Error::InvalidLeafVersion)?;
-            builder = builder.add_leaf_with_ver(*depth, script, leaf_version)
+            let leaf_version =
+                LeafVersion::from_consensus(*version).map_err(|_| Error::InvalidLeafVersion)?;
+            builder = builder
+                .add_leaf_with_ver(*depth, script, leaf_version)
                 .map_err(|_| Error::Taproot("Tree not in DFS order"))?;
         }
         TapTree::try_from(builder).map_err(Error::TapTree)
@@ -426,9 +383,7 @@ impl Deserialize for TapTree {
 }
 
 // Helper function to compute key source len
-fn key_source_len(key_source: &KeySource) -> usize {
-    4 + 4 * (key_source.1).as_ref().len()
-}
+fn key_source_len(key_source: &KeySource) -> usize { 4 + 4 * (key_source.1).as_ref().len() }
 
 #[cfg(test)]
 mod tests {
@@ -439,7 +394,10 @@ mod tests {
     // Composes tree matching a given depth map, filled with dumb script leafs,
     // each of which consists of a single push-int op code, with int value
     // increased for each consecutive leaf.
-    pub fn compose_taproot_builder<'map>(opcode: u8, depth_map: impl IntoIterator<Item = &'map u8>) -> TaprootBuilder {
+    pub fn compose_taproot_builder<'map>(
+        opcode: u8,
+        depth_map: impl IntoIterator<Item = &'map u8>,
+    ) -> TaprootBuilder {
         let mut val = opcode;
         let mut builder = TaprootBuilder::new();
         for depth in depth_map {
@@ -454,7 +412,13 @@ mod tests {
     #[test]
     fn taptree_hidden() {
         let mut builder = compose_taproot_builder(0x51, &[2, 2, 2]);
-        builder = builder.add_leaf_with_ver(3, ScriptBuf::from_hex("b9").unwrap(), LeafVersion::from_consensus(0xC2).unwrap()).unwrap();
+        builder = builder
+            .add_leaf_with_ver(
+                3,
+                ScriptBuf::from_hex("b9").unwrap(),
+                LeafVersion::from_consensus(0xC2).unwrap(),
+            )
+            .unwrap();
         builder = builder.add_hidden_node(3, TapNodeHash::all_zeros()).unwrap();
         assert!(TapTree::try_from(builder).is_err());
     }
@@ -462,7 +426,13 @@ mod tests {
     #[test]
     fn taptree_roundtrip() {
         let mut builder = compose_taproot_builder(0x51, &[2, 2, 2, 3]);
-        builder = builder.add_leaf_with_ver(3, ScriptBuf::from_hex("b9").unwrap(), LeafVersion::from_consensus(0xC2).unwrap()).unwrap();
+        builder = builder
+            .add_leaf_with_ver(
+                3,
+                ScriptBuf::from_hex("b9").unwrap(),
+                LeafVersion::from_consensus(0xC2).unwrap(),
+            )
+            .unwrap();
         let tree = TapTree::try_from(builder).unwrap();
         let tree_prime = TapTree::deserialize(&tree.serialize()).unwrap();
         assert_eq!(tree, tree_prime);