warning: this `.into_iter()` call is equivalent to `.iter()` and will not consume the `Vec`
  --> halo2_proofs/src/protostar/row_evaluator/interpolate.rs:59:29
   |
59 |                 .zip(denoms.into_iter())
   |                             ^^^^^^^^^ help: call directly: `iter`
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#into_iter_on_ref
   = note: `-W clippy::into-iter-on-ref` implied by `-W clippy::all`

warning: unused variable: `row`
   --> halo2_proofs/src/protostar/keygen.rs:231:9
    |
231 |         row: usize,
    |         ^^^ help: if this is intentional, prefix it with an underscore: `_row`

warning: unused variable: `column`
   --> halo2_proofs/src/protostar/keygen.rs:230:9
    |
230 |         column: Column<Advice>,
    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_column`

warning: unused variable: `column_index`
   --> halo2_proofs/src/protostar/keygen.rs:218:13
    |
218 |         let column_index = column.index();
    |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_column_index`
    |
    = note: `#[warn(unused_variables)]` on by default

warning: casting to the same type is unnecessary (`usize` -> `usize`)
   --> halo2_gadgets/src/sinsemilla.rs:200:30
    |
200 |         assert!(num_words <= piece_max_num_words as usize);
    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `piece_max_num_words`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast

warning: function `test_prover` is never used
   --> halo2_proofs/examples/folding.rs:279:4
    |
279 | fn test_prover<C: CurveAffine, const W: usize, const H: usize>(
    |    ^^^^^^^^^^^

warning: function `test_mock_prover` is never used
   --> halo2_proofs/examples/folding.rs:252:4
    |
252 | fn test_mock_prover<F: Ord + FromUniformBytes<64>, const W: usize, const H: usize>(
    |    ^^^^^^^^^^^^^^^^
    |
    = note: `#[warn(dead_code)]` on by default

warning: casting to the same type is unnecessary (`u64` -> `u64`)
   --> halo2_gadgets/src/sha256/table16/util.rs:113:31
    |
113 |     let carry = sum.map(|sum| (sum >> 32) as u64);
    |                               ^^^^^^^^^^^^^^^^^^ help: try: `(sum >> 32)`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast

warning: useless conversion to the same type: `std::ops::Range<usize>`
  --> halo2_proofs/benches/commit_zk.rs:29:46
   |
29 |       let mut thread_seeds: Vec<ChaCha20Rng> = (0..n_chunks)
   |  ______________________________________________^
30 | |         .into_iter()
   | |____________________^ help: consider removing `.into_iter()`: `(0..n_chunks)`
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_conversion
   = note: `-W clippy::useless-conversion` implied by `-W clippy::all`

warning: casting to the same type is unnecessary (`u64` -> `u64`)
   --> halo2_gadgets/src/sha256/table16/message_schedule/subregion3.rs:180:57
    |
180 |                 || carry.map(|carry| pallas::Base::from(carry as u64)),
    |                                                         ^^^^^^^^^^^^ help: try: `carry`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast

warning: casting to the same type is unnecessary (`u64` -> `u64`)
   --> halo2_gadgets/src/sha256/table16/message_schedule/subregion2.rs:264:57
    |
264 |                 || carry.map(|carry| pallas::Base::from(carry as u64)),
    |                                                         ^^^^^^^^^^^^ help: try: `carry`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast

warning: casting to the same type is unnecessary (`usize` -> `usize`)
  --> halo2_gadgets/src/sha256/table16/message_schedule/schedule_util.rs:56:34
   |
56 |             + DECOMPOSE_0_ROWS * (word_idx - 62) as usize
   |                                  ^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `(word_idx - 62)`
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast

warning: casting to the same type is unnecessary (`usize` -> `usize`)
  --> halo2_gadgets/src/sha256/table16/message_schedule/schedule_util.rs:50:34
   |
50 |             + SUBREGION_3_WORD * (word_idx - 49) as usize
   |                                  ^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `(word_idx - 49)`
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast

warning: casting to the same type is unnecessary (`usize` -> `usize`)
  --> halo2_gadgets/src/sha256/table16/message_schedule/schedule_util.rs:43:47
   |
43 |         SUBREGION_0_ROWS + SUBREGION_1_WORD * (word_idx - 1) as usize
   |                                               ^^^^^^^^^^^^^^^^^^^^^^^ help: try: `(word_idx - 1)`
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast

warning: casting to the same type is unnecessary (`u64` -> `u64`)
   --> halo2_gadgets/src/sha256/table16/compression/compression_util.rs:786:65
    |
786 |                 || h_prime_carry.map(|value| pallas::Base::from(value as u64)),
    |                                                                 ^^^^^^^^^^^^ help: try: `value`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast

warning: casting to the same type is unnecessary (`usize` -> `usize`)
   --> halo2_gadgets/src/sha256/table16/compression/compression_util.rs:114:13
    |
114 |             (idx as usize) * SUBREGION_MAIN_WORD
    |             ^^^^^^^^^^^^^^ help: try: `idx`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast
    = note: `-W clippy::unnecessary-cast` implied by `-W clippy::all`

warning: the borrowed expression implements the required traits
  --> halo2_gadgets/src/poseidon/primitives/p128pow5t3.rs:51:25
   |
51 |         val.pow_vartime(&[5])
   |                         ^^^^ help: change this to: `[5]`
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow

warning: the borrowed expression implements the required traits
  --> halo2_gadgets/src/poseidon/primitives/p128pow5t3.rs:25:25
   |
25 |         val.pow_vartime(&[5])
   |                         ^^^^ help: change this to: `[5]`
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow

warning: the borrowed expression implements the required traits
   --> halo2_gadgets/src/poseidon/pow5.rs:513:77
    |
513 |                 let r_0 = (p[0] + config.round_constants[round + 1][0]).pow(&config.alpha);
    |                                                                             ^^^^^^^^^^^^^ help: change this to: `config.alpha`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow

warning: the borrowed expression implements the required traits
   --> halo2_gadgets/src/poseidon/pow5.rs:473:73
    |
473 |                 let r_0 = (p[0] + config.round_constants[round][0]).pow(&config.alpha);
    |                                                                         ^^^^^^^^^^^^^ help: change this to: `config.alpha`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow

warning: the borrowed expression implements the required traits
   --> halo2_gadgets/src/poseidon/pow5.rs:447:62
    |
447 |             let r: Value<Vec<F>> = q.map(|q| q.map(|q| q.pow(&config.alpha))).collect();
    |                                                              ^^^^^^^^^^^^^ help: change this to: `config.alpha`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow

warning: the borrowed expression implements the required traits
   --> halo2_gadgets/src/ecc/chip/mul_fixed.rs:397:42
    |
397 |             .map(|k| k * (*H_SCALAR).pow(&[(NUM_WINDOWS - 1) as u64, 0, 0, 0]) - offset_acc);
    |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: change this to: `[(NUM_WINDOWS - 1) as u64, 0, 0, 0]`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow

warning: the borrowed expression implements the required traits
   --> halo2_gadgets/src/ecc/chip/mul_fixed.rs:392:37
    |
392 |             acc + (*TWO_SCALAR).pow(&[FIXED_BASE_WINDOW_SIZE as u64 * w as u64 + 1, 0, 0, 0])
    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: change this to: `[FIXED_BASE_WINDOW_SIZE as u64 * w as u64 + 1, 0, 0, 0]`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow

warning: the borrowed expression implements the required traits
   --> halo2_gadgets/src/ecc/chip/mul_fixed.rs:375:68
    |
375 |         let scalar = k.map(|k| (k + *TWO_SCALAR) * (*H_SCALAR).pow(&[w as u64, 0, 0, 0]));
    |                                                                    ^^^^^^^^^^^^^^^^^^^^ help: change this to: `[w as u64, 0, 0, 0]`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow

warning: the borrowed expression implements the required traits
   --> halo2_gadgets/benches/sha256.rs:147:35
    |
147 |     let mut proof_fs = File::open(&proof_path).expect("couldn't load sha256_proof");
    |                                   ^^^^^^^^^^^ help: change this to: `proof_path`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow