fix: resolve Clippy 1.94 lint errors in shell-primitives and shell-mempool

crates/shell-mempool/src/admission.rs

@@ -12,19 +12,11 @@ use crate::errors::{
 use crate::fees::{gas_price_covers, payload_lane_fee, witness_lane_fee, FeeLane, FeeSchedule};
 use crate::outcomes::{AuthorizationValidated, TentativeAccepted};
 
-#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+#[derive(Debug, Clone, Copy, Default, PartialEq, Eq)]
 pub struct NoncePolicy {
     pub max_future_nonce_gap: u64,
 }
 
-impl Default for NoncePolicy {
-    fn default() -> Self {
-        Self {
-            max_future_nonce_gap: 0,
-        }
-    }
-}
-
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Default)]
 pub enum TransactionAuthorizationDomain {
     #[default]

crates/shell-primitives/src/codec.rs

@@ -204,7 +204,7 @@ fn decode_authorization_list(bytes: &[u8]) -> Result<Vec<Authorization>, Primiti
     }
 
     let first_offset = read_u32(bytes, 0)? as usize;
-    if first_offset == 0 || first_offset % 4 != 0 {
+    if first_offset == 0 || !first_offset.is_multiple_of(4) {
         return Err(PrimitiveError::MalformedSsz(MalformedSszError {
             context: "Authorization list first offset must equal the offset-table size",
         }));

crates/shell-primitives/src/ssz.rs

@@ -59,7 +59,7 @@ pub(crate) fn pack_bytes(bytes: &[u8]) -> Vec<[u8; 32]> {
     if bytes.is_empty() {
         return Vec::new();
     }
-    let num_chunks = (bytes.len() + 31) / 32;
+    let num_chunks = bytes.len().div_ceil(32);
     let mut chunks = Vec::with_capacity(num_chunks);
     for i in 0..num_chunks {
         let mut chunk = [0u8; 32];