chore(clippy): make clippy happy (#2647)

ethers-etherscan/tests/it/account.rs

@@ -95,7 +95,7 @@ async fn get_erc20_transfer_events_success() {
             )
             .await
             .unwrap();
-        let tx = txs.get(0).unwrap();
+        let tx = txs.first().unwrap();
         assert_eq!(tx.gas_used, 93657u64.into());
         assert_eq!(tx.nonce, 10u64.into());
         assert_eq!(tx.block_number, 2228258u64.into());

ethers-providers/src/rpc/provider.rs

@@ -2033,7 +2033,7 @@ mod tests {
         // check that the second peer is in the list (it uses an enr so the enr should be Some)
         assert_eq!(peers.len(), 1);
 
-        let peer = peers.get(0).unwrap();
+        let peer = peers.first().unwrap();
         assert_eq!(H256::from_str(&peer.id).unwrap(), second_info.id);
 
         // remove directories

ethers-solc/src/artifact_output/mod.rs

@@ -367,7 +367,7 @@ impl<T> Artifacts<T> {
     pub fn find_first(&self, contract_name: impl AsRef<str>) -> Option<&T> {
         let contract_name = contract_name.as_ref();
         self.0.iter().find_map(|(_file, contracts)| {
-            contracts.get(contract_name).and_then(|c| c.get(0).map(|a| &a.artifact))
+            contracts.get(contract_name).and_then(|c| c.first().map(|a| &a.artifact))
         })
     }
 
@@ -377,7 +377,7 @@ impl<T> Artifacts<T> {
         let contract_name = contract.as_ref();
         self.0.iter().filter(|(path, _)| path.as_str() == contract_path).find_map(
             |(_file, contracts)| {
-                contracts.get(contract_name).and_then(|c| c.get(0).map(|a| &a.artifact))
+                contracts.get(contract_name).and_then(|c| c.first().map(|a| &a.artifact))
             },
         )
     }

ethers-solc/src/compile/output/contracts.rs

@@ -208,7 +208,7 @@ impl VersionedContracts {
         self.0
             .get(path.as_ref())
             .and_then(|contracts| {
-                contracts.get(contract).and_then(|c| c.get(0).map(|c| &c.contract))
+                contracts.get(contract).and_then(|c| c.first().map(|c| &c.contract))
             })
             .map(CompactContractRef::from)
     }

ethers-solc/src/project_util/mock.rs

@@ -73,7 +73,7 @@ impl MockProjectGenerator {
         // stores libs and their files
         let libs = get_libs(
             &edges,
-            &paths.libraries.get(0).cloned().unwrap_or_else(|| paths.root.join("lib")),
+            &paths.libraries.first().cloned().unwrap_or_else(|| paths.root.join("lib")),
         )
         .ok_or_else(|| SolcError::msg("Failed to detect libs"))?;
 

ethers-solc/src/project_util/mod.rs

@@ -148,7 +148,7 @@ impl<T: ArtifactOutput> TempProject<T> {
     fn get_lib(&self) -> Result<PathBuf> {
         self.paths()
             .libraries
-            .get(0)
+            .first()
             .cloned()
             .ok_or_else(|| SolcError::msg("No libraries folders configured"))
     }