warning: using `clone` on type `<H as Hasher>::Hash` which implements the `Copy` trait
    --> src/lazy_merkle_tree.rs:1063:41
     |
1063 |             return SparseTree::new_leaf(hash.clone());
     |                                         ^^^^^^^^^^^^ help: try dereferencing it: `*hash`
     |
     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy

warning: using `clone` on type `<H as Hasher>::Hash` which implements the `Copy` trait
    --> src/lazy_merkle_tree.rs:1026:9
     |
1026 |         self.storage[self.root_index].clone()
     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try removing the `clone` call: `self.storage[self.root_index]`
     |
     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy

warning: using `clone` on type `<H as Hasher>::Hash` which implements the `Copy` trait
   --> src/lazy_merkle_tree.rs:997:9
    |
997 |         self.storage.lock().expect("lock poisoned")[self.root_index].clone()
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try removing the `clone` call: `self.storage.lock().expect("lock poisoned")[self.root_index]`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy

warning: using `clone` on type `<H as Hasher>::Hash` which implements the `Copy` trait
   --> src/lazy_merkle_tree.rs:986:45
    |
986 |         storage[leaf_index_in_dense_tree] = value.clone();
    |                                             ^^^^^^^^^^^^^ help: try dereferencing it: `*value`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy

warning: using `clone` on type `<H as Hasher>::Hash` which implements the `Copy` trait
   --> src/lazy_merkle_tree.rs:965:13
    |
965 |             r.storage[leaf_index_in_dense_tree].clone()
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try removing the `clone` call: `r.storage[leaf_index_in_dense_tree]`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy

warning: using `clone` on type `<H as Hasher>::Hash` which implements the `Copy` trait
   --> src/lazy_merkle_tree.rs:836:41
    |
836 |             return SparseTree::new_leaf(hash.clone());
    |                                         ^^^^^^^^^^^^ help: try dereferencing it: `*hash`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy

warning: using `clone` on type `<H as Hasher>::Hash` which implements the `Copy` trait
   --> src/lazy_merkle_tree.rs:799:9
    |
799 |         self.storage[self.root_index].clone()
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try removing the `clone` call: `self.storage[self.root_index]`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy

warning: using `clone` on type `<H as Hasher>::Hash` which implements the `Copy` trait
   --> src/lazy_merkle_tree.rs:770:9
    |
770 |         self.storage.lock().unwrap()[self.root_index].clone()
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try removing the `clone` call: `self.storage.lock().unwrap()[self.root_index]`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
note: the lint level is defined here
   --> src/lib.rs:2:9
    |
2   | #![warn(clippy::all, clippy::cargo)]
    |         ^^^^^^^^^^^
    = note: `#[warn(clippy::clone_on_copy)]` implied by `#[warn(clippy::all)]`

warning: function `as_bytes` is never used
  --> src/util.rs:24:22
   |
24 | pub(crate) unsafe fn as_bytes<T: ?Sized>(p: &T) -> &[u8] {
   |                      ^^^^^^^^
   |
   = note: `#[warn(dead_code)]` on by default