[INFO] fetching crate sapling-crypto_ce 0.1.3...
[INFO] checking sapling-crypto_ce-0.1.3 against master#507271bc119683008ec719ecee48814e8ac86c65 for pr-146440
[INFO] extracting crate sapling-crypto_ce 0.1.3 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate sapling-crypto_ce 0.1.3
[INFO] finished tweaking crates.io crate sapling-crypto_ce 0.1.3
[INFO] tweaked toml for crates.io crate sapling-crypto_ce 0.1.3 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate sapling-crypto_ce 0.1.3 on toolchain 507271bc119683008ec719ecee48814e8ac86c65
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+507271bc119683008ec719ecee48814e8ac86c65" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate sapling-crypto_ce 0.1.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+507271bc119683008ec719ecee48814e8ac86c65" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+507271bc119683008ec719ecee48814e8ac86c65" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
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[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]    --> src/babyjubjub/mod.rs:137:34
[INFO] [stdout]     |
[INFO] [stdout] 137 |     fn circuit_generators(&self, FixedGenerators) -> &[Vec<(E::Fr, E::Fr)>];
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: FixedGenerators`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2018/trait-fn-parameters.html>
[INFO] [stdout]     = note: `#[warn(anonymous_parameters)]` (part of `#[warn(rust_2018_compatibility)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]    --> src/jubjub/mod.rs:134:34
[INFO] [stdout]     |
[INFO] [stdout] 134 |     fn circuit_generators(&self, FixedGenerators) -> &[Vec<(E::Fr, E::Fr)>];
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: FixedGenerators`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2018/trait-fn-parameters.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]    --> src/babyjubjub/mod.rs:137:34
[INFO] [stdout]     |
[INFO] [stdout] 137 |     fn circuit_generators(&self, FixedGenerators) -> &[Vec<(E::Fr, E::Fr)>];
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: FixedGenerators`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2018/trait-fn-parameters.html>
[INFO] [stdout]     = note: `#[warn(anonymous_parameters)]` (part of `#[warn(rust_2018_compatibility)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]    --> src/jubjub/mod.rs:134:34
[INFO] [stdout]     |
[INFO] [stdout] 134 |     fn circuit_generators(&self, FixedGenerators) -> &[Vec<(E::Fr, E::Fr)>];
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: FixedGenerators`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2018/trait-fn-parameters.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `round` is never read
[INFO] [stdout]    --> src/circuit/poseidon_hash.rs:336:9
[INFO] [stdout]     |
[INFO] [stdout] 336 |         round += 1;
[INFO] [stdout]     |         ^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 382 |         round += 1;
[INFO] [stdout]     |         ---------- `round` is overwritten here before the previous value is read
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `round` is never read
[INFO] [stdout]    --> src/circuit/poseidon_hash.rs:382:9
[INFO] [stdout]     |
[INFO] [stdout] 382 |         round += 1;
[INFO] [stdout]     |         ^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 402 |         round += 1;
[INFO] [stdout]     |         ---------- `round` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `round` is never read
[INFO] [stdout]    --> src/circuit/poseidon_hash.rs:402:9
[INFO] [stdout]     |
[INFO] [stdout] 402 |         round += 1;
[INFO] [stdout]     |         ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `round` is never read
[INFO] [stdout]    --> src/circuit/poseidon_hash.rs:360:9
[INFO] [stdout]     |
[INFO] [stdout] 360 |         round += 1;
[INFO] [stdout]     |         ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `round` is never read
[INFO] [stdout]    --> src/circuit/poseidon_hash.rs:306:9
[INFO] [stdout]     |
[INFO] [stdout] 306 |         round += 1;
[INFO] [stdout]     |         ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `round` is never read
[INFO] [stdout]    --> src/poseidon/mod.rs:230:9
[INFO] [stdout]     |
[INFO] [stdout] 230 |         round += 1;
[INFO] [stdout]     |         ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `round` is never read
[INFO] [stdout]    --> src/poseidon/mod.rs:209:9
[INFO] [stdout]     |
[INFO] [stdout] 209 |         round += 1;
[INFO] [stdout]     |         ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `round` is never read
[INFO] [stdout]    --> src/poseidon/mod.rs:191:9
[INFO] [stdout]     |
[INFO] [stdout] 191 |         round += 1;
[INFO] [stdout]     |         ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: non-local `impl` definition, `impl` blocks should be written at the same level as their item
[INFO] [stdout]   --> src/jubjub/edwards.rs:34:10
[INFO] [stdout]    |
[INFO] [stdout] 34 | #[derive(Serialize, Deserialize, Default)]
[INFO] [stdout]    |          ^--------
[INFO] [stdout]    |          |
[INFO] [stdout]    |          `Serialize` is not local
[INFO] [stdout]    |          move the `impl` block outside of this constant `_IMPL_SERIALIZE_FOR_Point`
[INFO] [stdout] 35 | pub struct Point<E: JubjubEngine, Subgroup> {
[INFO] [stdout]    |            ----- `Point` is not local
[INFO] [stdout]    |
[INFO] [stdout]    = note: the derive macro `Serialize` defines the non-local `impl`, and may need to be changed
[INFO] [stdout]    = note: the derive macro `Serialize` may come from an old version of the `serde_derive` crate, try updating your dependency with `cargo update -p serde_derive`
[INFO] [stdout]    = note: an `impl` is never scoped, even when it is nested inside an item, as it may impact type checking outside of that item, which can be the case if neither the trait or the self type are at the same nesting level as the `impl`
[INFO] [stdout]    = note: items in an anonymous const item (`const _: () = { ... }`) are treated as in the same scope as the anonymous const's declaration for the purpose of this lint
[INFO] [stdout]    = note: `#[warn(non_local_definitions)]` on by default
[INFO] [stdout]    = note: this warning originates in the derive macro `Serialize` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: non-local `impl` definition, `impl` blocks should be written at the same level as their item
[INFO] [stdout]   --> src/jubjub/edwards.rs:34:21
[INFO] [stdout]    |
[INFO] [stdout] 34 | #[derive(Serialize, Deserialize, Default)]
[INFO] [stdout]    |                     ^----------
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     `Deserialize` is not local
[INFO] [stdout]    |                     move the `impl` block outside of this constant `_IMPL_DESERIALIZE_FOR_Point`
[INFO] [stdout] 35 | pub struct Point<E: JubjubEngine, Subgroup> {
[INFO] [stdout]    |            ----- `Point` is not local
[INFO] [stdout]    |
[INFO] [stdout]    = note: the derive macro `Deserialize` defines the non-local `impl`, and may need to be changed
[INFO] [stdout]    = note: the derive macro `Deserialize` may come from an old version of the `serde_derive` crate, try updating your dependency with `cargo update -p serde_derive`
[INFO] [stdout]    = note: an `impl` is never scoped, even when it is nested inside an item, as it may impact type checking outside of that item, which can be the case if neither the trait or the self type are at the same nesting level as the `impl`
[INFO] [stdout]    = note: items in an anonymous const item (`const _: () = { ... }`) are treated as in the same scope as the anonymous const's declaration for the purpose of this lint
[INFO] [stdout]    = note: this warning originates in the derive macro `Deserialize` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/circuit/merkle.rs:150:39
[INFO] [stdout]     |
[INFO] [stdout] 150 |         for (i, direction_bit) in path.clone().into_iter()
[INFO] [stdout]     |                                       ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `[Boolean]` does not implement `Clone`, so calling `clone` on `&[Boolean]` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/circuit/merkle.rs:205:39
[INFO] [stdout]     |
[INFO] [stdout] 205 |         for (i, direction_bit) in path.clone().into_iter()
[INFO] [stdout]     |                                       ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `[Boolean]` does not implement `Clone`, so calling `clone` on `&[Boolean]` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/circuit/merkle.rs:274:91
[INFO] [stdout]     |
[INFO] [stdout] 274 |             for (i, ((direction_bit_0, direction_bit_1), intersection_bit)) in path_bits_0.clone().into_iter()
[INFO] [stdout]     |                                                                                           ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `[Boolean]` does not implement `Clone`, so calling `clone` on `&[Boolean]` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/circuit/merkle.rs:275:109
[INFO] [stdout]     |
[INFO] [stdout] 275 | ...                   .zip(path_bits_1.clone().into_iter())
[INFO] [stdout]     |                                       ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `[Boolean]` does not implement `Clone`, so calling `clone` on `&[Boolean]` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `round` is never read
[INFO] [stdout]    --> src/circuit/poseidon_hash.rs:336:9
[INFO] [stdout]     |
[INFO] [stdout] 336 |         round += 1;
[INFO] [stdout]     |         ^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 382 |         round += 1;
[INFO] [stdout]     |         ---------- `round` is overwritten here before the previous value is read
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `round` is never read
[INFO] [stdout]    --> src/circuit/poseidon_hash.rs:382:9
[INFO] [stdout]     |
[INFO] [stdout] 382 |         round += 1;
[INFO] [stdout]     |         ^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 402 |         round += 1;
[INFO] [stdout]     |         ---------- `round` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `round` is never read
[INFO] [stdout]    --> src/circuit/poseidon_hash.rs:402:9
[INFO] [stdout]     |
[INFO] [stdout] 402 |         round += 1;
[INFO] [stdout]     |         ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `round` is never read
[INFO] [stdout]    --> src/circuit/poseidon_hash.rs:360:9
[INFO] [stdout]     |
[INFO] [stdout] 360 |         round += 1;
[INFO] [stdout]     |         ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `round` is never read
[INFO] [stdout]    --> src/circuit/poseidon_hash.rs:306:9
[INFO] [stdout]     |
[INFO] [stdout] 306 |         round += 1;
[INFO] [stdout]     |         ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `round` is never read
[INFO] [stdout]    --> src/poseidon/mod.rs:230:9
[INFO] [stdout]     |
[INFO] [stdout] 230 |         round += 1;
[INFO] [stdout]     |         ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `round` is never read
[INFO] [stdout]    --> src/poseidon/mod.rs:209:9
[INFO] [stdout]     |
[INFO] [stdout] 209 |         round += 1;
[INFO] [stdout]     |         ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `round` is never read
[INFO] [stdout]    --> src/poseidon/mod.rs:191:9
[INFO] [stdout]     |
[INFO] [stdout] 191 |         round += 1;
[INFO] [stdout]     |         ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: non-local `impl` definition, `impl` blocks should be written at the same level as their item
[INFO] [stdout]   --> src/jubjub/edwards.rs:34:10
[INFO] [stdout]    |
[INFO] [stdout] 34 | #[derive(Serialize, Deserialize, Default)]
[INFO] [stdout]    |          ^--------
[INFO] [stdout]    |          |
[INFO] [stdout]    |          `Serialize` is not local
[INFO] [stdout]    |          move the `impl` block outside of this constant `_IMPL_SERIALIZE_FOR_Point`
[INFO] [stdout] 35 | pub struct Point<E: JubjubEngine, Subgroup> {
[INFO] [stdout]    |            ----- `Point` is not local
[INFO] [stdout]    |
[INFO] [stdout]    = note: the derive macro `Serialize` defines the non-local `impl`, and may need to be changed
[INFO] [stdout]    = note: the derive macro `Serialize` may come from an old version of the `serde_derive` crate, try updating your dependency with `cargo update -p serde_derive`
[INFO] [stdout]    = note: an `impl` is never scoped, even when it is nested inside an item, as it may impact type checking outside of that item, which can be the case if neither the trait or the self type are at the same nesting level as the `impl`
[INFO] [stdout]    = note: items in an anonymous const item (`const _: () = { ... }`) are treated as in the same scope as the anonymous const's declaration for the purpose of this lint
[INFO] [stdout]    = note: `#[warn(non_local_definitions)]` on by default
[INFO] [stdout]    = note: this warning originates in the derive macro `Serialize` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: non-local `impl` definition, `impl` blocks should be written at the same level as their item
[INFO] [stdout]   --> src/jubjub/edwards.rs:34:21
[INFO] [stdout]    |
[INFO] [stdout] 34 | #[derive(Serialize, Deserialize, Default)]
[INFO] [stdout]    |                     ^----------
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     `Deserialize` is not local
[INFO] [stdout]    |                     move the `impl` block outside of this constant `_IMPL_DESERIALIZE_FOR_Point`
[INFO] [stdout] 35 | pub struct Point<E: JubjubEngine, Subgroup> {
[INFO] [stdout]    |            ----- `Point` is not local
[INFO] [stdout]    |
[INFO] [stdout]    = note: the derive macro `Deserialize` defines the non-local `impl`, and may need to be changed
[INFO] [stdout]    = note: the derive macro `Deserialize` may come from an old version of the `serde_derive` crate, try updating your dependency with `cargo update -p serde_derive`
[INFO] [stdout]    = note: an `impl` is never scoped, even when it is nested inside an item, as it may impact type checking outside of that item, which can be the case if neither the trait or the self type are at the same nesting level as the `impl`
[INFO] [stdout]    = note: items in an anonymous const item (`const _: () = { ... }`) are treated as in the same scope as the anonymous const's declaration for the purpose of this lint
[INFO] [stdout]    = note: this warning originates in the derive macro `Deserialize` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to `<[T; N] as IntoIterator>::into_iter` in Rust 2021
[INFO] [stdout]    --> src/circuit/blake2s.rs:345:27
[INFO] [stdout]     |
[INFO] [stdout] 345 |         for b in expected.into_iter() {
[INFO] [stdout]     |                           ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout]     = note: `#[warn(array_into_iter)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 345 -         for b in expected.into_iter() {
[INFO] [stdout] 345 +         for b in expected.iter() {
[INFO] [stdout]     |
[INFO] [stdout] help: or remove `.into_iter()` to iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 345 -         for b in expected.into_iter() {
[INFO] [stdout] 345 +         for b in expected {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to `<[T; N] as IntoIterator>::into_iter` in Rust 2021
[INFO] [stdout]    --> src/circuit/sha256.rs:333:27
[INFO] [stdout]     |
[INFO] [stdout] 333 |         for b in expected.into_iter() {
[INFO] [stdout]     |                           ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 333 -         for b in expected.into_iter() {
[INFO] [stdout] 333 +         for b in expected.iter() {
[INFO] [stdout]     |
[INFO] [stdout] help: or remove `.into_iter()` to iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 333 -         for b in expected.into_iter() {
[INFO] [stdout] 333 +         for b in expected {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/circuit/merkle.rs:150:39
[INFO] [stdout]     |
[INFO] [stdout] 150 |         for (i, direction_bit) in path.clone().into_iter()
[INFO] [stdout]     |                                       ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `[boolean::Boolean]` does not implement `Clone`, so calling `clone` on `&[boolean::Boolean]` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/circuit/merkle.rs:205:39
[INFO] [stdout]     |
[INFO] [stdout] 205 |         for (i, direction_bit) in path.clone().into_iter()
[INFO] [stdout]     |                                       ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `[boolean::Boolean]` does not implement `Clone`, so calling `clone` on `&[boolean::Boolean]` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/circuit/merkle.rs:274:91
[INFO] [stdout]     |
[INFO] [stdout] 274 |             for (i, ((direction_bit_0, direction_bit_1), intersection_bit)) in path_bits_0.clone().into_iter()
[INFO] [stdout]     |                                                                                           ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `[boolean::Boolean]` does not implement `Clone`, so calling `clone` on `&[boolean::Boolean]` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/circuit/merkle.rs:275:109
[INFO] [stdout]     |
[INFO] [stdout] 275 | ...                   .zip(path_bits_1.clone().into_iter())
[INFO] [stdout]     |                                       ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `[boolean::Boolean]` does not implement `Clone`, so calling `clone` on `&[boolean::Boolean]` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 19.09s
[INFO] running `Command { std: "docker" "inspect" "7e8606eed4ede4046d24287b82851b578db0e52ad8de2f183b15e2f2307e581c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e8606eed4ede4046d24287b82851b578db0e52ad8de2f183b15e2f2307e581c", kill_on_drop: false }`
[INFO] [stdout] 7e8606eed4ede4046d24287b82851b578db0e52ad8de2f183b15e2f2307e581c
