warning: this expression creates a reference which is immediately dereferenced by the compiler
    --> src/lazy_merkle_tree.rs:1152:27
     |
1152 |         if file.write_all(&buf).is_err() {
     |                           ^^^^ help: change this to: `buf`
     |
     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
     = note: `#[warn(clippy::needless_borrow)]` implied by `#[warn(clippy::all)]`

warning: temporary with significant `Drop` can be early dropped
   --> src/lazy_merkle_tree.rs:984:17
    |
983 |       fn update_with_mutation(&self, index: usize, value: &H::Hash) {
    |  ___________________________________________________________________-
984 | |         let mut storage = self.storage.lock().expect("lock poisoned, terminating");
    | |                 ^^^^^^^
985 | |         let leaf_index_in_dense_tree = index + (self.root_index << self.depth);
986 | |         storage[leaf_index_in_dense_tree] = value.clone();
...   |
993 | |         }
994 | |     }
    | |_____- temporary `storage` is currently being dropped at the end of its contained scope
    |
    = note: this might lead to unnecessary resource contention
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#significant_drop_tightening
help: merge the temporary construction with its single usage
    |
984 ~         
985 +         self.storage.lock().expect("lock poisoned, terminating").;
    |
help: remove separated single usage
    |
986 -         storage[leaf_index_in_dense_tree] = value.clone();
986 +         
    |

warning: temporary with significant `Drop` can be early dropped
   --> src/lazy_merkle_tree.rs:747:17
    |
746 |       fn update_with_mutation(&self, index: usize, value: &H::Hash) {
    |  ___________________________________________________________________-
747 | |         let mut storage = self.storage.lock().expect("lock poisoned, terminating");
    | |                 ^^^^^^^
748 | |         let leaf_index_in_dense_tree = index + (self.root_index << self.depth);
749 | |         storage[leaf_index_in_dense_tree] = value.clone();
...   |
756 | |         }
757 | |     }
    | |_____- temporary `storage` is currently being dropped at the end of its contained scope
    |
    = note: this might lead to unnecessary resource contention
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#significant_drop_tightening
note: the lint level is defined here
   --> src/lib.rs:2:55
    |
2   | #![warn(clippy::all, clippy::pedantic, clippy::cargo, clippy::nursery)]
    |                                                       ^^^^^^^^^^^^^^^
    = note: `#[warn(clippy::significant_drop_tightening)]` implied by `#[warn(clippy::nursery)]`
help: merge the temporary construction with its single usage
    |
747 ~         
748 +         self.storage.lock().expect("lock poisoned, terminating").;
    |
help: remove separated single usage
    |
749 -         storage[leaf_index_in_dense_tree] = value.clone();
749 +         
    |

warning: redundant clone
   --> src/lazy_merkle_tree.rs:563:39
    |
563 |             let right = children.right.clone();
    |                                       ^^^^^^^^ help: remove this
    |
note: cloned value is neither consumed nor mutated
   --> src/lazy_merkle_tree.rs:563:25
    |
563 |             let right = children.right.clone();
    |                         ^^^^^^^^^^^^^^^^^^^^^^
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_clone

warning: redundant clone
   --> src/lazy_merkle_tree.rs:562:37
    |
562 |             let left = children.left.clone();
    |                                     ^^^^^^^^ help: remove this
    |
note: cloned value is neither consumed nor mutated
   --> src/lazy_merkle_tree.rs:562:24
    |
562 |             let left = children.left.clone();
    |                        ^^^^^^^^^^^^^^^^^^^^^
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_clone
    = note: `#[warn(clippy::redundant_clone)]` implied by `#[warn(clippy::all)]`

warning: docs for function returning `Result` missing `# Errors` section
  --> src/lazy_merkle_tree.rs:86:5
   |
86 | /     pub fn new_mmapped_with_dense_prefix_with_init_values(
87 | |         depth: usize,
88 | |         prefix_depth: usize,
89 | |         empty_value: &H::Hash,
90 | |         initial_values: &[H::Hash],
91 | |         file_path: &str,
92 | |     ) -> Result<LazyMerkleTree<H, Canonical>, DenseMMapError> {
   | |_____________________________________________________________^
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#missing_errors_doc

warning: this function has an empty `#[must_use]` attribute, but returns a type already marked as `#[must_use]`
  --> src/lazy_merkle_tree.rs:86:5
   |
86 | /     pub fn new_mmapped_with_dense_prefix_with_init_values(
87 | |         depth: usize,
88 | |         prefix_depth: usize,
89 | |         empty_value: &H::Hash,
90 | |         initial_values: &[H::Hash],
91 | |         file_path: &str,
92 | |     ) -> Result<LazyMerkleTree<H, Canonical>, DenseMMapError> {
   | |_____________________________________________________________^
   |
   = help: either add some descriptive text or remove the attribute
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#double_must_use
   = note: `#[warn(clippy::double_must_use)]` implied by `#[warn(clippy::all)]`

warning: unneeded `return` statement
  --> src/protocol/authentication.rs:31:5
   |
31 | /     return super::verify_proof(
32 | |         root,
33 | |         nullifier_hash,
34 | |         signal_hash,
...  |
37 | |         depth,
38 | |     );
   | |_____^
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
   = help: remove `return`

warning: docs for function returning `Result` missing `# Errors` section
  --> src/protocol/authentication.rs:20:1
   |
20 | / pub fn verify_proof(
21 | |     depth: usize,
22 | |     id_commitment: Field,
23 | |     nullifier_hash: Field,
...  |
26 | |     proof: &Proof,
27 | | ) -> Result<bool, ProofError> {
   | |_____________________________^
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#missing_errors_doc

warning: unneeded `return` statement
  --> src/protocol/authentication.rs:17:5
   |
17 |     return super::generate_proof(identity, &merkle_proof, ext_nullifier_hash, signal_hash);
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
note: the lint level is defined here
  --> src/lib.rs:2:9
   |
2  | #![warn(clippy::all, clippy::pedantic, clippy::cargo, clippy::nursery)]
   |         ^^^^^^^^^^^
   = note: `#[warn(clippy::needless_return)]` implied by `#[warn(clippy::all)]`
   = help: remove `return`

warning: docs for function returning `Result` missing `# Errors` section
  --> src/protocol/authentication.rs:8:1
   |
8  | / pub fn generate_proof(
9  | |     depth: usize,
10 | |     identity: &Identity,
11 | |     ext_nullifier_hash: Field,
12 | |     signal_hash: Field,
13 | | ) -> Result<Proof, ProofError> {
   | |______________________________^
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#missing_errors_doc
note: the lint level is defined here
  --> src/lib.rs:2:22
   |
2  | #![warn(clippy::all, clippy::pedantic, clippy::cargo, clippy::nursery)]
   |                      ^^^^^^^^^^^^^^^^
   = note: `#[warn(clippy::missing_errors_doc)]` implied by `#[warn(clippy::pedantic)]`