warning: the item `RangeConstrained` is imported redundantly
   --> src/circuit/commit_ivk.rs:231:80
    |
231 |     use halo2_gadgets::utilities::{lookup_range_check::LookupRangeCheckConfig, RangeConstrained};
    |                                                                                ^^^^^^^^^^^^^^^^
...
234 |     use super::*;
    |         -------- the item `RangeConstrained` is already imported here
    |
    = note: `#[warn(unused_imports)]` on by default

warning: the item `Value` is imported redundantly
    --> src/circuit/note_commit.rs:1565:39
     |
1565 |     use halo2_proofs::circuit::{Chip, Value};
     |                                       ^^^^^
1566 |
1567 |     use super::*;
     |         -------- the item `Value` is already imported here

warning: unused import: `H`
 --> src/constants.rs:6:91
  |
6 | pub use fixed_bases::{NullifierK, OrchardFixedBases, OrchardFixedBasesFull, ValueCommitV, H};
  |                                                                                           ^

warning: the item `Ord` is imported redundantly
 --> src/primitives/redpallas.rs:3:17
  |
3 | use core::cmp::{Ord, Ordering, PartialOrd};
  |                 ^^^
 --> /rustc/277d06bc95c6c38a2337ccde798b2c709384bd84/library/std/src/prelude/mod.rs:125:13
  |
  = note: the item `Ord` is already defined here

warning: the item `PartialOrd` is imported redundantly
 --> src/primitives/redpallas.rs:3:32
  |
3 | use core::cmp::{Ord, Ordering, PartialOrd};
  |                                ^^^^^^^^^^
 --> /rustc/277d06bc95c6c38a2337ccde798b2c709384bd84/library/std/src/prelude/mod.rs:125:13
  |
  = note: the item `PartialOrd` is already defined here

warning: usage of `Iterator::fold` on a type that implements `Try`
   --> src/builder.rs:534:14
    |
534 |             .fold(Some(ValueSum::zero()), |acc, note_value| acc? + note_value)
    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `try_fold` instead: `try_fold(ValueSum::zero(), |acc, note_value| ...)`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_try_fold
    = note: `#[warn(clippy::manual_try_fold)]` on by default

warning: explicit call to `.into_iter()` in function argument accepting `IntoIterator`
   --> src/builder.rs:615:18
    |
615 |             .zip(indexed_outputs.into_iter())
    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing the `.into_iter()`: `indexed_outputs`
    |
note: this parameter accepts any `IntoIterator`, so you don't need to call `.into_iter()`
   --> /rustc/277d06bc95c6c38a2337ccde798b2c709384bd84/library/core/src/iter/traits/iterator.rs:602:12
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_conversion
    = note: `#[warn(clippy::useless_conversion)]` on by default

warning: explicit call to `.into_iter()` in function argument accepting `IntoIterator`
   --> src/note_encryption.rs:244:18
    |
244 |             .zip(ephemeral_keys.into_iter())
    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing the `.into_iter()`: `ephemeral_keys`
    |
note: this parameter accepts any `IntoIterator`, so you don't need to call `.into_iter()`
   --> /rustc/277d06bc95c6c38a2337ccde798b2c709384bd84/library/core/src/iter/traits/iterator.rs:602:12
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_conversion

warning: usage of `Iterator::fold` on a type that implements `Try`
   --> src/value.rs:195:14
    |
195 |         iter.fold(Ok(ValueSum(0)), |acc, v| (acc? + *v).ok_or(OverflowError))
    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `try_fold` instead: `try_fold(ValueSum(0), |acc, v| ...)`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_try_fold

warning: usage of `Iterator::fold` on a type that implements `Try`
   --> src/value.rs:201:14
    |
201 |         iter.fold(Ok(ValueSum(0)), |acc, v| (acc? + v).ok_or(OverflowError))
    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `try_fold` instead: `try_fold(ValueSum(0), |acc, v| ...)`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_try_fold

warning: 12 warnings emitted