Fix mismatched_lifetime_syntaxes warnings

This became a warning since Rust v1.89.0:
https://blog.rust-lang.org/2025/08/07/Rust-1.89.0/#mismatched-lifetime-syntaxes-lint

Author: shesek

src/elements/peg.rs

@@ -3,7 +3,7 @@ use elements::{confidential::Asset, PeginData, PegoutData, TxIn, TxOut};
 use crate::chain::{bitcoin_genesis_hash, BNetwork, Network};
 use crate::util::{FullHash, ScriptToAsm};
 
-pub fn get_pegin_data(txout: &TxIn, network: Network) -> Option<PeginData> {
+pub fn get_pegin_data(txout: &TxIn, network: Network) -> Option<PeginData<'_>> {
     let pegged_asset_id = network.pegged_asset()?;
     txout
         .pegin_data()
@@ -14,7 +14,7 @@ pub fn get_pegout_data(
     txout: &TxOut,
     network: Network,
     parent_network: BNetwork,
-) -> Option<PegoutData> {
+) -> Option<PegoutData<'_>> {
     let pegged_asset_id = network.pegged_asset()?;
     txout.pegout_data().filter(|pegout| {
         pegout.asset == Asset::Explicit(*pegged_asset_id)

src/elements/registry.rs

@@ -40,7 +40,7 @@ impl AssetRegistry {
         start_index: usize,
         limit: usize,
         sorting: AssetSorting,
-    ) -> (usize, Vec<AssetEntry>) {
+    ) -> (usize, Vec<AssetEntry<'_>>) {
         let mut assets: Vec<AssetEntry> = self
             .assets_cache
             .iter()

src/new_index/db.rs

@@ -137,19 +137,19 @@ impl DB {
         self.db.set_options(&opts).unwrap();
     }
 
-    pub fn raw_iterator(&self) -> rocksdb::DBRawIterator {
+    pub fn raw_iterator(&self) -> rocksdb::DBRawIterator<'_> {
         self.db.raw_iterator()
     }
 
-    pub fn iter_scan(&self, prefix: &[u8]) -> ScanIterator {
+    pub fn iter_scan(&self, prefix: &[u8]) -> ScanIterator<'_> {
         ScanIterator {
             prefix: prefix.to_vec(),
             iter: self.db.prefix_iterator(prefix),
             done: false,
         }
     }
 
-    pub fn iter_scan_from(&self, prefix: &[u8], start_at: &[u8]) -> ScanIterator {
+    pub fn iter_scan_from(&self, prefix: &[u8], start_at: &[u8]) -> ScanIterator<'_> {
         let iter = self.db.iterator(rocksdb::IteratorMode::From(
             start_at,
             rocksdb::Direction::Forward,
@@ -161,7 +161,7 @@ impl DB {
         }
     }
 
-    pub fn iter_scan_reverse(&self, prefix: &[u8], prefix_max: &[u8]) -> ReverseScanIterator {
+    pub fn iter_scan_reverse(&self, prefix: &[u8], prefix_max: &[u8]) -> ReverseScanIterator<'_> {
         let mut iter = self.db.raw_iterator();
         iter.seek_for_prev(prefix_max);
 

src/new_index/query.rs

@@ -65,7 +65,7 @@ impl Query {
         self.config.network_type
     }
 
-    pub fn mempool(&self) -> RwLockReadGuard<Mempool> {
+    pub fn mempool(&self) -> RwLockReadGuard<'_, Mempool> {
         self.mempool.read().unwrap()
     }
 

src/new_index/schema.rs

@@ -124,7 +124,7 @@ impl Store {
         &self.cache_db
     }
 
-    pub fn headers(&self) -> RwLockReadGuard<HeaderList> {
+    pub fn headers(&self) -> RwLockReadGuard<'_, HeaderList> {
         self.indexed_headers.read().unwrap()
     }
 
@@ -599,14 +599,19 @@ impl ChainQuery {
         })
     }
 
-    pub fn history_iter_scan(&self, code: u8, hash: &[u8], start_height: usize) -> ScanIterator {
+    pub fn history_iter_scan(
+        &self,
+        code: u8,
+        hash: &[u8],
+        start_height: usize,
+    ) -> ScanIterator<'_> {
         self.store.history_db.iter_scan_from(
             &TxHistoryRow::filter(code, &hash[..]),
             &TxHistoryRow::prefix_height(code, &hash[..], start_height as u32),
         )
     }
 
-    fn history_iter_scan_reverse(&self, code: u8, hash: &[u8]) -> ReverseScanIterator {
+    fn history_iter_scan_reverse(&self, code: u8, hash: &[u8]) -> ReverseScanIterator<'_> {
         self.store.history_db.iter_scan_reverse(
             &TxHistoryRow::filter(code, &hash[..]),
             &TxHistoryRow::prefix_end(code, &hash[..]),

src/util/block.rs

@@ -285,7 +285,7 @@ impl HeaderList {
         self.headers.is_empty()
     }
 
-    pub fn iter(&self) -> slice::Iter<HeaderEntry> {
+    pub fn iter(&self) -> slice::Iter<'_, HeaderEntry> {
         self.headers.iter()
     }