warning: casting to the same type is unnecessary (`usize` -> `usize`)
   --> halo2_backend/src/poly/domain.rs:862:25
    |
862 |             poly.resize(domain.extended_len() as usize, Scalar::zero());
    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `domain.extended_len()`
    |
    = 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_backend/src/poly/domain.rs:812:25
    |
812 |             poly.resize(domain.extended_len() as usize, Scalar::zero());
    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `domain.extended_len()`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast

warning: manual implementation of an assign operation
   --> halo2_backend/src/poly/domain.rs:511:17
    |
511 |                 c_power = c_power * c;
    |                 ^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `c_power *= c`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern

warning: the borrowed expression implements the required traits
   --> halo2_backend/src/poly/domain.rs:508:45
    |
508 |             let mut c_power = c.pow_vartime(&[index as u64, 0, 0, 0]);
    |                                             ^^^^^^^^^^^^^^^^^^^^^^^^ help: change this to: `[index as u64, 0, 0, 0]`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow

warning: this `.into_iter()` call is equivalent to `.iter()` and will not consume the `slice`
   --> halo2_backend/src/poly/domain.rs:399:73
    |
399 |             for (value, other) in values.iter_mut().zip(result[start..].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: manual implementation of an assign operation
   --> halo2_backend/src/poly/domain.rs:367:17
    |
367 |                 i = i << 1;
    |                 ^^^^^^^^^^ help: replace it with: `i <<= 1`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern

warning: casting to the same type is unnecessary (`usize` -> `usize`)
   --> halo2_backend/src/poly/domain.rs:177:34
    |
177 |         assert_eq!(values.len(), (self.extended_len() >> self.k) as usize);
    |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `{ (self.extended_len() >> self.k) }`
    |
    = 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: taken reference of right operand
    --> halo2_backend/src/plonk/evaluation.rs:1230:25
     |
1230 |                 &|a, b| a + &b,
     |                         ^^^^--
     |                             |
     |                             help: use the right value directly: `b`
     |
     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref

warning: this function has too many arguments (13/7)
    --> halo2_backend/src/plonk/evaluation.rs:1152:5
     |
1152 | /     pub fn evaluate<B: Basis>(
1153 | |         &self,
1154 | |         data: &mut EvaluationData<F>,
1155 | |         fixed: &[Option<Polynomial<F, B>>],
...    |
1165 | |         isize: i32,
1166 | |     ) -> F {
     | |__________^
     |
     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#too_many_arguments

warning: manual implementation of an assign operation
   --> halo2_backend/src/plonk/evaluation.rs:975:13
    |
975 |             idx = idx + 1;
    |             ^^^^^^^^^^^^^ help: replace it with: `idx += 1`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern

warning: manual implementation of an assign operation
   --> halo2_backend/src/plonk/evaluation.rs:961:33
    |
961 | ...                   *value = *value * y_power;
    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `*value *= y_power`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern

warning: manual implementation of an assign operation
   --> halo2_backend/src/plonk/evaluation.rs:697:37
    |
697 | ...                   *value = *value * y_skip;
    |                       ^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `*value *= y_skip`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern

warning: the borrowed expression implements the required traits
   --> halo2_backend/src/plonk/evaluation.rs:692:57
    |
692 | ...                   * omega.pow_vartime(&[start as u64, 0, 0, 0]);
    |                                           ^^^^^^^^^^^^^^^^^^^^^^^^ help: change this to: `[start as u64, 0, 0, 0]`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
    = note: `-W clippy::needless-borrow` implied by `-W clippy::all`

warning: manual implementation of an assign operation
   --> halo2_backend/src/plonk/evaluation.rs:619:37
    |
619 | ...                   *value = *value * y_skip;
    |                       ^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `*value *= y_skip`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
    = note: `-W clippy::assign-op-pattern` implied by `-W clippy::all`

warning: taken reference of right operand
   --> halo2_backend/src/plonk/evaluation.rs:547:39
    |
547 |                     let delta_start = beta * &C::Scalar::ZETA;
    |                                       ^^^^^^^----------------
    |                                              |
    |                                              help: use the right value directly: `C::Scalar::ZETA`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
    = note: `-W clippy::op-ref` implied by `-W clippy::all`

warning: this function has too many arguments (11/7)
   --> halo2_backend/src/plonk/evaluation.rs:395:5
    |
395 | /     pub(in crate::plonk) fn evaluate_h<C: CurveAffine<ScalarExt = F>>(
396 | |         &self,
397 | |         pk: &ProvingKey<C>,
398 | |         advice_polys: &[&[Polynomial<F, Coeff>]],
...   |
406 | |         permutations: &[permutation::prover::Committed<C>],
407 | |     ) -> Polynomial<F, ExtendedLagrangeCoeff> {
    | |_____________________________________________^
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#too_many_arguments

warning: this function has too many arguments (12/7)
   --> halo2_backend/src/plonk/evaluation.rs:133:5
    |
133 | /     pub fn evaluate<F: Field, B: Basis>(
134 | |         &self,
135 | |         rotations: &[usize],
136 | |         constants: &[F],
...   |
145 | |         theta: &F,
146 | |     ) -> F {
    | |__________^
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#too_many_arguments

warning: this function has too many arguments (12/7)
  --> halo2_backend/src/plonk/evaluation.rs:72:5
   |
72 | /     pub fn get<F: Field, B: Basis>(
73 | |         &self,
74 | |         rotations: &[usize],
75 | |         constants: &[F],
...  |
84 | |         theta: &F,
85 | |     ) -> F {
   | |__________^
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#too_many_arguments
   = note: `-W clippy::too-many-arguments` implied by `-W clippy::all`

warning: function `test_plonk_api_ipa` is never used
   --> halo2_proofs/tests/plonk_api.rs:622:8
    |
622 |     fn test_plonk_api_ipa() {
    |        ^^^^^^^^^^^^^^^^^^

warning: type alias `Scheme` is never used
   --> halo2_proofs/tests/plonk_api.rs:592:14
    |
592 |         type Scheme = KZGCommitmentScheme<Bn256>;
    |              ^^^^^^

warning: type alias `Scheme` is never used
   --> halo2_proofs/tests/plonk_api.rs:556:14
    |
556 |         type Scheme = KZGCommitmentScheme<Bn256>;
    |              ^^^^^^
    |
    = note: `#[warn(dead_code)]` on by default

warning: unused import: `PrimeField`
  --> halo2_backend/src/plonk/evaluation.rs:16:30
   |
16 |     ff::{BatchInvert, Field, PrimeField, WithSmallOrderMulGroup},
   |                              ^^^^^^^^^^

warning: unused import: `Index`
  --> halo2_backend/src/plonk/evaluation.rs:31:11
   |
31 |     ops::{Index, Mul, MulAssign},
   |           ^^^^^

warning: unused import: `commitment::Params`
 --> halo2_backend/src/plonk/evaluation.rs:9:9
  |
9 |         commitment::Params, Coeff, EvaluationDomain, ExtendedLagrangeCoeff, LagrangeCoeff,
  |         ^^^^^^^^^^^^^^^^^^

warning: unused import: `EncodedChallenge`
  --> halo2_backend/src/plonk/evaluation.rs:12:18
   |
12 |     transcript::{EncodedChallenge, TranscriptWrite},
   |                  ^^^^^^^^^^^^^^^^