benches: hide the Clone impl

Cargo.toml

@@ -7,6 +7,8 @@ version = "0.1.0"
 default = ["std", "rocksdb"]
 rocksdb = ["dep:rocksdb"]
 std = ["parity-scale-codec/std", "bitvec/std", "starknet-types-core/std"]
+# internal
+bench = []
 
 [dependencies]
 bitvec = { version = "1", default-features = false, features = ["alloc"] }
@@ -48,4 +50,5 @@ criterion = "0.5.1"
 
 [[bench]]
 name = "storage"
+required-features = ["bench"]
 harness = false

src/changes.rs

@@ -15,7 +15,7 @@ pub struct Change {
 }
 
 #[derive(Debug, Default)]
-#[derive(Clone)]
+#[cfg_attr(feature = "bench", derive(Clone))]
 pub struct ChangeBatch(pub(crate) HashMap<TrieKey, Change>);
 
 const KEY_SEPARATOR: u8 = 0x00;
@@ -116,7 +116,7 @@ impl ChangeBatch {
     }
 }
 
-#[derive(Clone)]
+#[cfg_attr(feature = "bench", derive(Clone))]
 pub struct ChangeStore<ID>
 where
     ID: Id,

src/key_value_db.rs

@@ -18,7 +18,7 @@ use crate::{
 };
 
 /// Crate Trie <= KeyValueDB => BonsaiDatabase
-#[derive(Clone)]
+#[cfg_attr(feature = "bench", derive(Clone))]
 pub struct KeyValueDB<DB, ID>
 where
     DB: BonsaiDatabase,

src/lib.rs

@@ -168,6 +168,7 @@ where
     tries: MerkleTrees<H, DB, ChangeID>,
 }
 
+#[cfg(feature = "bench")]
 impl<ChangeID, DB, H> Clone for BonsaiStorage<ChangeID, DB, H>
 where
     DB: BonsaiDatabase + Clone,

src/trie/merkle_tree.rs

@@ -71,6 +71,7 @@ pub(crate) struct MerkleTrees<H: StarkHash + Send + Sync, DB: BonsaiDatabase, Co
     pub trees: HashMap<Vec<u8>, MerkleTree<H>>,
 }
 
+#[cfg(feature = "bench")]
 impl<H: StarkHash + Send + Sync, DB: BonsaiDatabase + Clone, CommitID: Id> Clone
     for MerkleTrees<H, DB, CommitID>
 {
@@ -268,6 +269,7 @@ pub struct MerkleTree<H: StarkHash> {
 }
 
 // NB: #[derive(Clone)] does not work because it expands to an impl block which forces H: Clone, which Pedersen/Poseidon aren't.
+#[cfg(feature = "bench")]
 impl<H: StarkHash> Clone for MerkleTree<H> {
     fn clone(&self) -> Self {
         Self {