chore(clippy): Fix clippy cast and closure warnings (#5378)

* Fix clippy cast and closure warnings

* Silence incorrect lints in Clippy 1.64

* Use correct clippy syntax

Co-authored-by: Marek <mail@marek.onl>

* Disable an incorrect Clippy 1.64 lint

* Disable lint on the correct code

* Try another place

Co-authored-by: Marek <mail@marek.onl>

zebra-chain/src/history_tree.rs

@@ -275,7 +275,7 @@ impl NonEmptyHistoryTree {
         // /\ /\ /\ /\ /\ /\ /\ 0
         //
         // We start by determining the altitude of the highest peak (A).
-        let mut alt = (32 - ((self.size + 1) as u32).leading_zeros() - 1) - 1;
+        let mut alt = (32 - (self.size + 1).leading_zeros() - 1) - 1;
 
         // We determine the position of the highest peak (A) by pretending it is the right
         // sibling in a tree, and its left-most leaf has position 0. Then the left sibling

zebra-chain/src/orchard/shielded_data.rs

@@ -249,7 +249,10 @@ impl ZcashDeserialize for Flags {
         // Consensus rule: "In a version 5 transaction,
         // the reserved bits 2..7 of the flagsOrchard field MUST be zero."
         // https://zips.z.cash/protocol/protocol.pdf#txnencodingandconsensus
+        //
+        // Clippy 1.64 is wrong here, this lazy evaluation is necessary, constructors are functions. This is fixed in 1.66.
+        #[allow(clippy::unnecessary_lazy_evaluations)]
         Flags::from_bits(reader.read_u8()?)
-            .ok_or(SerializationError::Parse("invalid reserved orchard flags"))
+            .ok_or_else(|| SerializationError::Parse("invalid reserved orchard flags"))
     }
 }

zebra-chain/src/transaction/arbitrary.rs

@@ -535,7 +535,7 @@ impl Arbitrary for LockTime {
             (block::Height::MIN.0..=LockTime::MAX_HEIGHT.0)
                 .prop_map(|n| LockTime::Height(block::Height(n))),
             (LockTime::MIN_TIMESTAMP..=LockTime::MAX_TIMESTAMP)
-                .prop_map(|n| { LockTime::Time(Utc.timestamp(n as i64, 0)) })
+                .prop_map(|n| { LockTime::Time(Utc.timestamp(n, 0)) })
         ]
         .boxed()
     }

zebra-chain/src/transaction/serialize.rs

@@ -872,11 +872,16 @@ impl ZcashDeserialize for Transaction {
                 }
                 // Denoted as `nConsensusBranchId` in the spec.
                 // Convert it to a NetworkUpgrade
+                //
+                // Clippy 1.64 is wrong here, this lazy evaluation is necessary, constructors are functions. This is fixed in 1.66.
+                #[allow(clippy::unnecessary_lazy_evaluations)]
                 let network_upgrade =
                     NetworkUpgrade::from_branch_id(limited_reader.read_u32::<LittleEndian>()?)
-                        .ok_or(SerializationError::Parse(
-                            "expected a valid network upgrade from the consensus branch id",
-                        ))?;
+                        .ok_or_else(|| {
+                            SerializationError::Parse(
+                                "expected a valid network upgrade from the consensus branch id",
+                            )
+                        })?;
 
                 // Denoted as `lock_time` in the spec.
                 let lock_time = LockTime::zcash_deserialize(&mut limited_reader)?;

zebra-chain/src/transaction/tests/vectors.rs

@@ -752,7 +752,7 @@ fn test_vec243_2() -> Result<()> {
 
     let lock_script = Script::new(&[]);
     let prevout = transparent::Output { value, lock_script };
-    let index = input_ind as usize;
+    let index = input_ind;
     let all_previous_outputs = mock_pre_v5_output_list(prevout, input_ind);
 
     let alt_sighash = crate::primitives::zcash_primitives::sighash(
@@ -805,7 +805,7 @@ fn test_vec243_3() -> Result<()> {
         "76a914507173527b4c3318a2aecd793bf1cfed705950cf88ac",
     )?);
     let prevout = transparent::Output { value, lock_script };
-    let index = input_ind as usize;
+    let index = input_ind;
 
     let alt_sighash = crate::primitives::zcash_primitives::sighash(
         &transaction,

zebra-network/src/protocol/external/codec.rs

@@ -465,6 +465,8 @@ impl Decoder for Codec {
 
 impl Codec {
     fn read_version<R: Read>(&self, mut reader: R) -> Result<Message, Error> {
+        // Clippy 1.64 is wrong here, this lazy evaluation is necessary, constructors are functions. This is fixed in 1.66.
+        #[allow(clippy::unnecessary_lazy_evaluations)]
         Ok(VersionMessage {
             version: Version(reader.read_u32::<LittleEndian>()?),
             // Use from_bits_truncate to discard unknown service bits.
@@ -472,9 +474,7 @@ impl Codec {
             timestamp: Utc
                 .timestamp_opt(reader.read_i64::<LittleEndian>()?, 0)
                 .single()
-                .ok_or(Error::Parse(
-                    "version timestamp is out of range for DateTime",
-                ))?,
+                .ok_or_else(|| Error::Parse("version timestamp is out of range for DateTime"))?,
             address_recv: AddrInVersion::zcash_deserialize(&mut reader)?,
             address_from: AddrInVersion::zcash_deserialize(&mut reader)?,
             nonce: Nonce(reader.read_u64::<LittleEndian>()?),