[INFO] cloning repository https://github.com/vioWard95/blockchain-from-scratch
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vioWard95/blockchain-from-scratch" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FvioWard95%2Fblockchain-from-scratch", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FvioWard95%2Fblockchain-from-scratch'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 749a5cb99f0866caa32f7c8e050ba6658bbfb595
[INFO] checking vioWard95/blockchain-from-scratch against try#6284d7b4bd27983dba388146648ab844ca7d032f for pr-152971
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FvioWard95%2Fblockchain-from-scratch" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/vioWard95/blockchain-from-scratch
[INFO] finished tweaking git repo https://github.com/vioWard95/blockchain-from-scratch
[INFO] tweaked toml for git repo https://github.com/vioWard95/blockchain-from-scratch written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/vioWard95/blockchain-from-scratch on toolchain 6284d7b4bd27983dba388146648ab844ca7d032f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6284d7b4bd27983dba388146648ab844ca7d032f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/vioWard95/blockchain-from-scratch 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" "+6284d7b4bd27983dba388146648ab844ca7d032f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking vioWard95/blockchain-from-scratch against try#6284d7b4bd27983dba388146648ab844ca7d032f for pr-152971
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FvioWard95%2Fblockchain-from-scratch" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/vioWard95/blockchain-from-scratch
[INFO] finished tweaking git repo https://github.com/vioWard95/blockchain-from-scratch
[INFO] tweaked toml for git repo https://github.com/vioWard95/blockchain-from-scratch written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/vioWard95/blockchain-from-scratch on toolchain 6284d7b4bd27983dba388146648ab844ca7d032f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6284d7b4bd27983dba388146648ab844ca7d032f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/vioWard95/blockchain-from-scratch 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" "+6284d7b4bd27983dba388146648ab844ca7d032f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+6284d7b4bd27983dba388146648ab844ca7d032f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c903193e98c0046a67f689463004f4c5eaaedcf59d05534ed4da870c32d85707
[INFO] running `Command { std: "docker" "start" "-a" "c903193e98c0046a67f689463004f4c5eaaedcf59d05534ed4da870c32d85707", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c903193e98c0046a67f689463004f4c5eaaedcf59d05534ed4da870c32d85707", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c903193e98c0046a67f689463004f4c5eaaedcf59d05534ed4da870c32d85707", kill_on_drop: false }`
[INFO] [stdout] c903193e98c0046a67f689463004f4c5eaaedcf59d05534ed4da870c32d85707
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+6284d7b4bd27983dba388146648ab844ca7d032f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 33cc845811fb990fe480acb526de373fe12c6022a2dd3838078d5fbda1387e47
[INFO] running `Command { std: "docker" "start" "-a" "33cc845811fb990fe480acb526de373fe12c6022a2dd3838078d5fbda1387e47", kill_on_drop: false }`
[INFO] [stderr]     Checking diy-blockchain v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Block` and `Header`
[INFO] [stdout]  --> src/c2_blockchain/mod.rs:7:25
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub use p6_rich_state::{Block, Header};
[INFO] [stdout]   |                         ^^^^^  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::hash`
[INFO] [stdout]  --> src/c2_blockchain/p1_header_chain.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::hash;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::hash`
[INFO] [stdout]   --> src/c2_blockchain/p2_extrinsic_state.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use crate::hash;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::hash`
[INFO] [stdout]  --> src/c2_blockchain/p3_consensus.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::hash;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::hash`
[INFO] [stdout]  --> src/c2_blockchain/p4_batched_extrinsics.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::hash;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::p3_consensus::THRESHOLD`
[INFO] [stdout]  --> src/c2_blockchain/p4_batched_extrinsics.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use super::p3_consensus::THRESHOLD;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::hash`
[INFO] [stdout]   --> src/c2_blockchain/p5_fork_choice.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use crate::hash;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::p3_consensus::THRESHOLD`
[INFO] [stdout]   --> src/c2_blockchain/p5_fork_choice.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use super::p3_consensus::THRESHOLD;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::hash`
[INFO] [stdout]   --> src/c2_blockchain/p6_rich_state.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use crate::hash;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::p3_consensus::THRESHOLD`
[INFO] [stdout]   --> src/c2_blockchain/p6_rich_state.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use super::p3_consensus::THRESHOLD;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::marker::PhantomData`
[INFO] [stdout]  --> src/c3_consensus/p4_even_only.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::marker::PhantomData;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Block` and `Header`
[INFO] [stdout]  --> src/c2_blockchain/mod.rs:7:25
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub use p6_rich_state::{Block, Header};
[INFO] [stdout]   |                         ^^^^^  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::p3_consensus::THRESHOLD`
[INFO] [stdout]   --> src/c2_blockchain/p6_rich_state.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use super::p3_consensus::THRESHOLD;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::marker::PhantomData`
[INFO] [stdout]  --> src/c3_consensus/p4_even_only.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::marker::PhantomData;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this function depends on never type fallback being `()`
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:46:1
[INFO] [stdout]    |
[INFO] [stdout] 46 | / fn change_authorities(
[INFO] [stdout] 47 | |     fork_height: u64,
[INFO] [stdout] 48 | |     initial_authorities: Vec<ConsensusAuthority>,
[INFO] [stdout] 49 | |     final_authorities: Vec<ConsensusAuthority>,
[INFO] [stdout] 50 | | ) -> impl Consensus {
[INFO] [stdout]    | |___________________^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/never-type-fallback.html>
[INFO] [stdout]    = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: Consensus` will fail
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:50:6
[INFO] [stdout]    |
[INFO] [stdout] 50 | ) -> impl Consensus {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[deny(dependency_on_unit_never_type_fallback)]` (part of `#[deny(rust_2024_compatibility)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this function depends on never type fallback being `()`
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:55:1
[INFO] [stdout]    |
[INFO] [stdout] 55 | / fn change_difficulty(
[INFO] [stdout] 56 | |     fork_height: u64,
[INFO] [stdout] 57 | |     initial_difficulty: u64,
[INFO] [stdout] 58 | |     final_difficulty: u64,
[INFO] [stdout] 59 | | ) -> impl Consensus {
[INFO] [stdout]    | |___________________^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/never-type-fallback.html>
[INFO] [stdout]    = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: Consensus` will fail
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:59:6
[INFO] [stdout]    |
[INFO] [stdout] 59 | ) -> impl Consensus {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this function depends on never type fallback being `()`
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:70:1
[INFO] [stdout]    |
[INFO] [stdout] 70 | fn even_after_given_height<Original: Consensus>(fork_height: u64) -> impl Consensus {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/never-type-fallback.html>
[INFO] [stdout]    = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: Consensus` will fail
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:70:70
[INFO] [stdout]    |
[INFO] [stdout] 70 | fn even_after_given_height<Original: Consensus>(fork_height: u64) -> impl Consensus {
[INFO] [stdout]    |                                                                      ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this function depends on never type fallback being `()`
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:80:1
[INFO] [stdout]    |
[INFO] [stdout] 80 | / fn pow_to_poa(
[INFO] [stdout] 81 | |     fork_height: u64,
[INFO] [stdout] 82 | |     difficulty: u64,
[INFO] [stdout] 83 | |     authorities: Vec<ConsensusAuthority>,
[INFO] [stdout] 84 | | ) -> impl Consensus {
[INFO] [stdout]    | |___________________^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/never-type-fallback.html>
[INFO] [stdout]    = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: Consensus` will fail
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:84:6
[INFO] [stdout]    |
[INFO] [stdout] 84 | ) -> impl Consensus {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `starting_state`
[INFO] [stdout]   --> src/c1_state_machine/p1_switches.rs:17:19
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn next_state(starting_state: &bool, t: &()) -> bool {
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_starting_state`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/c1_state_machine/p1_switches.rs:17:42
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn next_state(starting_state: &bool, t: &()) -> bool {
[INFO] [stdout]    |                                          ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `starting_state`
[INFO] [stdout]   --> src/c1_state_machine/p1_switches.rs:44:19
[INFO] [stdout]    |
[INFO] [stdout] 44 |     fn next_state(starting_state: &TwoSwitches, t: &Toggle) -> TwoSwitches {
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_starting_state`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/c1_state_machine/p1_switches.rs:44:49
[INFO] [stdout]    |
[INFO] [stdout] 44 |     fn next_state(starting_state: &TwoSwitches, t: &Toggle) -> TwoSwitches {
[INFO] [stdout]    |                                                 ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `starting_state`
[INFO] [stdout]   --> src/c1_state_machine/p2_laundry_machine.rs:42:19
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn next_state(starting_state: &ClothesState, t: &ClothesAction) -> ClothesState {
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_starting_state`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/c1_state_machine/p2_laundry_machine.rs:42:50
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn next_state(starting_state: &ClothesState, t: &ClothesAction) -> ClothesState {
[INFO] [stdout]    |                                                  ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `starting_state`
[INFO] [stdout]   --> src/c1_state_machine/p3_atm.rs:60:19
[INFO] [stdout]    |
[INFO] [stdout] 60 |     fn next_state(starting_state: &Self::State, t: &Self::Transition) -> Self::State {
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_starting_state`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/c1_state_machine/p3_atm.rs:60:49
[INFO] [stdout]    |
[INFO] [stdout] 60 |     fn next_state(starting_state: &Self::State, t: &Self::Transition) -> Self::State {
[INFO] [stdout]    |                                                 ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `starting_state`
[INFO] [stdout]   --> src/c1_state_machine/p4_accounted_currency.rs:47:19
[INFO] [stdout]    |
[INFO] [stdout] 47 |     fn next_state(starting_state: &Balances, t: &AccountingTransaction) -> Balances {
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_starting_state`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/c1_state_machine/p4_accounted_currency.rs:47:46
[INFO] [stdout]    |
[INFO] [stdout] 47 |     fn next_state(starting_state: &Balances, t: &AccountingTransaction) -> Balances {
[INFO] [stdout]    |                                              ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `starting_state`
[INFO] [stdout]   --> src/c1_state_machine/p5_digital_cash.rs:96:19
[INFO] [stdout]    |
[INFO] [stdout] 96 |     fn next_state(starting_state: &Self::State, t: &Self::Transition) -> Self::State {
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_starting_state`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/c1_state_machine/p5_digital_cash.rs:96:49
[INFO] [stdout]    |
[INFO] [stdout] 96 |     fn next_state(starting_state: &Self::State, t: &Self::Transition) -> Self::State {
[INFO] [stdout]    |                                                 ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chain`
[INFO] [stdout]   --> src/c2_blockchain/p1_header_chain.rs:40:32
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn verify_sub_chain(&self, chain: &[Header]) -> bool {
[INFO] [stdout]    |                                ^^^^^ help: if this is intentional, prefix it with an underscore: `_chain`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `extrinsic`
[INFO] [stdout]   --> src/c2_blockchain/p2_extrinsic_state.rs:38:21
[INFO] [stdout]    |
[INFO] [stdout] 38 |     fn child(&self, extrinsic: u64) -> Self {
[INFO] [stdout]    |                     ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_extrinsic`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chain`
[INFO] [stdout]   --> src/c2_blockchain/p2_extrinsic_state.rs:50:32
[INFO] [stdout]    |
[INFO] [stdout] 50 |     fn verify_sub_chain(&self, chain: &[Header]) -> bool {
[INFO] [stdout]    |                                ^^^^^ help: if this is intentional, prefix it with an underscore: `_chain`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/c2_blockchain/p2_extrinsic_state.rs:58:22
[INFO] [stdout]    |
[INFO] [stdout] 58 | fn build_valid_chain(n: u64) -> Vec<Header> {
[INFO] [stdout]    |                      ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `extrinsic`
[INFO] [stdout]   --> src/c2_blockchain/p3_consensus.rs:44:21
[INFO] [stdout]    |
[INFO] [stdout] 44 |     fn child(&self, extrinsic: u64) -> Self {
[INFO] [stdout]    |                     ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_extrinsic`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chain`
[INFO] [stdout]   --> src/c2_blockchain/p3_consensus.rs:52:32
[INFO] [stdout]    |
[INFO] [stdout] 52 |     fn verify_sub_chain(&self, chain: &[Header]) -> bool {
[INFO] [stdout]    |                                ^^^^^ help: if this is intentional, prefix it with an underscore: `_chain`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chain`
[INFO] [stdout]   --> src/c2_blockchain/p3_consensus.rs:64:37
[INFO] [stdout]    |
[INFO] [stdout] 64 |     fn verify_sub_chain_even(&self, chain: &[Header]) -> bool {
[INFO] [stdout]    |                                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_chain`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chain`
[INFO] [stdout]   --> src/c2_blockchain/p3_consensus.rs:70:36
[INFO] [stdout]    |
[INFO] [stdout] 70 |     fn verify_sub_chain_odd(&self, chain: &[Header]) -> bool {
[INFO] [stdout]    |                                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_chain`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `extrinsics_root`
[INFO] [stdout]   --> src/c2_blockchain/p4_batched_extrinsics.rs:42:25
[INFO] [stdout]    |
[INFO] [stdout] 42 |     pub fn child(&self, extrinsics_root: Hash, state: u64) -> Self {
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_extrinsics_root`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `state`
[INFO] [stdout]   --> src/c2_blockchain/p4_batched_extrinsics.rs:42:48
[INFO] [stdout]    |
[INFO] [stdout] 42 |     pub fn child(&self, extrinsics_root: Hash, state: u64) -> Self {
[INFO] [stdout]    |                                                ^^^^^ help: if this is intentional, prefix it with an underscore: `_state`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `child`
[INFO] [stdout]   --> src/c2_blockchain/p4_batched_extrinsics.rs:53:28
[INFO] [stdout]    |
[INFO] [stdout] 53 |     fn verify_child(&self, child: &Header) -> bool {
[INFO] [stdout]    |                            ^^^^^ help: if this is intentional, prefix it with an underscore: `_child`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chain`
[INFO] [stdout]   --> src/c2_blockchain/p4_batched_extrinsics.rs:64:32
[INFO] [stdout]    |
[INFO] [stdout] 64 |     fn verify_sub_chain(&self, chain: &[Header]) -> bool {
[INFO] [stdout]    |                                ^^^^^ help: if this is intentional, prefix it with an underscore: `_chain`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `extrinsics`
[INFO] [stdout]   --> src/c2_blockchain/p4_batched_extrinsics.rs:89:25
[INFO] [stdout]    |
[INFO] [stdout] 89 |     pub fn child(&self, extrinsics: Vec<u64>) -> Self {
[INFO] [stdout]    |                         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_extrinsics`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chain`
[INFO] [stdout]   --> src/c2_blockchain/p4_batched_extrinsics.rs:96:36
[INFO] [stdout]    |
[INFO] [stdout] 96 |     pub fn verify_sub_chain(&self, chain: &[Block]) -> bool {
[INFO] [stdout]    |                                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_chain`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parent`
[INFO] [stdout]    --> src/c2_blockchain/p4_batched_extrinsics.rs:109:48
[INFO] [stdout]     |
[INFO] [stdout] 109 | fn build_invalid_child_block_with_valid_header(parent: &Header) -> Block {
[INFO] [stdout]     |                                                ^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `candidate_chains`
[INFO] [stdout]   --> src/c2_blockchain/p5_fork_choice.rs:34:23
[INFO] [stdout]    |
[INFO] [stdout] 34 |     fn best_chain<'a>(candidate_chains: &[&'a [Header]]) -> &'a [Header] {
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_candidate_chains`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chain_1`
[INFO] [stdout]   --> src/c2_blockchain/p5_fork_choice.rs:43:30
[INFO] [stdout]    |
[INFO] [stdout] 43 |     fn first_chain_is_better(chain_1: &[Header], chain_2: &[Header]) -> bool {
[INFO] [stdout]    |                              ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_chain_1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chain_2`
[INFO] [stdout]   --> src/c2_blockchain/p5_fork_choice.rs:43:50
[INFO] [stdout]    |
[INFO] [stdout] 43 |     fn first_chain_is_better(chain_1: &[Header], chain_2: &[Header]) -> bool {
[INFO] [stdout]    |                                                  ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_chain_2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `candidate_chains`
[INFO] [stdout]   --> src/c2_blockchain/p5_fork_choice.rs:47:23
[INFO] [stdout]    |
[INFO] [stdout] 47 |     fn best_chain<'a>(candidate_chains: &[&'a [Header]]) -> &'a [Header] {
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_candidate_chains`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `block`
[INFO] [stdout]   --> src/c2_blockchain/p5_fork_choice.rs:69:20
[INFO] [stdout]    |
[INFO] [stdout] 69 | fn mine_extra_hard(block: &mut Block, threshold: u64) {
[INFO] [stdout]    |                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_block`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `threshold`
[INFO] [stdout]   --> src/c2_blockchain/p5_fork_choice.rs:69:39
[INFO] [stdout]    |
[INFO] [stdout] 69 | fn mine_extra_hard(block: &mut Block, threshold: u64) {
[INFO] [stdout]    |                                       ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_threshold`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chain_1`
[INFO] [stdout]   --> src/c2_blockchain/p5_fork_choice.rs:74:30
[INFO] [stdout]    |
[INFO] [stdout] 74 |     fn first_chain_is_better(chain_1: &[Header], chain_2: &[Header]) -> bool {
[INFO] [stdout]    |                              ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_chain_1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chain_2`
[INFO] [stdout]   --> src/c2_blockchain/p5_fork_choice.rs:74:50
[INFO] [stdout]    |
[INFO] [stdout] 74 |     fn first_chain_is_better(chain_1: &[Header], chain_2: &[Header]) -> bool {
[INFO] [stdout]    |                                                  ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_chain_2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `candidate_chains`
[INFO] [stdout]   --> src/c2_blockchain/p5_fork_choice.rs:78:23
[INFO] [stdout]    |
[INFO] [stdout] 78 |     fn best_chain<'a>(candidate_chains: &[&'a [Header]]) -> &'a [Header] {
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_candidate_chains`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chain_1`
[INFO] [stdout]    --> src/c2_blockchain/p5_fork_choice.rs:100:30
[INFO] [stdout]     |
[INFO] [stdout] 100 |     fn first_chain_is_better(chain_1: &[Header], chain_2: &[Header]) -> bool {
[INFO] [stdout]     |                              ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_chain_1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chain_2`
[INFO] [stdout]    --> src/c2_blockchain/p5_fork_choice.rs:100:50
[INFO] [stdout]     |
[INFO] [stdout] 100 |     fn first_chain_is_better(chain_1: &[Header], chain_2: &[Header]) -> bool {
[INFO] [stdout]     |                                                  ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_chain_2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `candidate_chains`
[INFO] [stdout]    --> src/c2_blockchain/p5_fork_choice.rs:104:23
[INFO] [stdout]     |
[INFO] [stdout] 104 |     fn best_chain<'a>(candidate_chains: &[&'a [Header]]) -> &'a [Header] {
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_candidate_chains`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this function depends on never type fallback being `()`
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:46:1
[INFO] [stdout]    |
[INFO] [stdout] 46 | / fn change_authorities(
[INFO] [stdout] 47 | |     fork_height: u64,
[INFO] [stdout] 48 | |     initial_authorities: Vec<ConsensusAuthority>,
[INFO] [stdout] 49 | |     final_authorities: Vec<ConsensusAuthority>,
[INFO] [stdout] 50 | | ) -> impl Consensus {
[INFO] [stdout]    | |___________________^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/never-type-fallback.html>
[INFO] [stdout]    = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: Consensus` will fail
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:50:6
[INFO] [stdout]    |
[INFO] [stdout] 50 | ) -> impl Consensus {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[deny(dependency_on_unit_never_type_fallback)]` (part of `#[deny(rust_2024_compatibility)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this function depends on never type fallback being `()`
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:55:1
[INFO] [stdout]    |
[INFO] [stdout] 55 | / fn change_difficulty(
[INFO] [stdout] 56 | |     fork_height: u64,
[INFO] [stdout] 57 | |     initial_difficulty: u64,
[INFO] [stdout] 58 | |     final_difficulty: u64,
[INFO] [stdout] 59 | | ) -> impl Consensus {
[INFO] [stdout]    | |___________________^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/never-type-fallback.html>
[INFO] [stdout]    = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: Consensus` will fail
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:59:6
[INFO] [stdout]    |
[INFO] [stdout] 59 | ) -> impl Consensus {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this function depends on never type fallback being `()`
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:70:1
[INFO] [stdout]    |
[INFO] [stdout] 70 | fn even_after_given_height<Original: Consensus>(fork_height: u64) -> impl Consensus {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/never-type-fallback.html>
[INFO] [stdout]    = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: Consensus` will fail
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:70:70
[INFO] [stdout]    |
[INFO] [stdout] 70 | fn even_after_given_height<Original: Consensus>(fork_height: u64) -> impl Consensus {
[INFO] [stdout]    |                                                                      ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `genesis_state_root`
[INFO] [stdout]   --> src/c2_blockchain/p6_rich_state.rs:49:16
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn genesis(genesis_state_root: Hash) -> Self {
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_genesis_state_root`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this function depends on never type fallback being `()`
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:80:1
[INFO] [stdout]    |
[INFO] [stdout] 80 | / fn pow_to_poa(
[INFO] [stdout] 81 | |     fork_height: u64,
[INFO] [stdout] 82 | |     difficulty: u64,
[INFO] [stdout] 83 | |     authorities: Vec<ConsensusAuthority>,
[INFO] [stdout] 84 | | ) -> impl Consensus {
[INFO] [stdout]    | |___________________^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/never-type-fallback.html>
[INFO] [stdout]    = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: Consensus` will fail
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:84:6
[INFO] [stdout]    |
[INFO] [stdout] 84 | ) -> impl Consensus {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `extrinsics_root`
[INFO] [stdout]   --> src/c2_blockchain/p6_rich_state.rs:57:21
[INFO] [stdout]    |
[INFO] [stdout] 57 |     fn child(&self, extrinsics_root: Hash, state_root: Hash) -> Self {
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_extrinsics_root`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `state_root`
[INFO] [stdout]   --> src/c2_blockchain/p6_rich_state.rs:57:44
[INFO] [stdout]    |
[INFO] [stdout] 57 |     fn child(&self, extrinsics_root: Hash, state_root: Hash) -> Self {
[INFO] [stdout]    |                                            ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_state_root`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `child`
[INFO] [stdout]   --> src/c2_blockchain/p6_rich_state.rs:62:28
[INFO] [stdout]    |
[INFO] [stdout] 62 |     fn verify_child(&self, child: &Header) -> bool {
[INFO] [stdout]    |                            ^^^^^ help: if this is intentional, prefix it with an underscore: `_child`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chain`
[INFO] [stdout]   --> src/c2_blockchain/p6_rich_state.rs:67:32
[INFO] [stdout]    |
[INFO] [stdout] 67 |     fn verify_sub_chain(&self, chain: &[Header]) -> bool {
[INFO] [stdout]    |                                ^^^^^ help: if this is intentional, prefix it with an underscore: `_chain`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `genesis_state`
[INFO] [stdout]   --> src/c2_blockchain/p6_rich_state.rs:91:20
[INFO] [stdout]    |
[INFO] [stdout] 91 |     pub fn genesis(genesis_state: &State) -> Self {
[INFO] [stdout]    |                    ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_genesis_state`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pre_state`
[INFO] [stdout]   --> src/c2_blockchain/p6_rich_state.rs:96:25
[INFO] [stdout]    |
[INFO] [stdout] 96 |     pub fn child(&self, pre_state: &State, extrinsics: Vec<u64>) -> Self {
[INFO] [stdout]    |                         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_pre_state`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `extrinsics`
[INFO] [stdout]   --> src/c2_blockchain/p6_rich_state.rs:96:44
[INFO] [stdout]    |
[INFO] [stdout] 96 |     pub fn child(&self, pre_state: &State, extrinsics: Vec<u64>) -> Self {
[INFO] [stdout]    |                                            ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_extrinsics`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pre_state`
[INFO] [stdout]    --> src/c2_blockchain/p6_rich_state.rs:105:36
[INFO] [stdout]     |
[INFO] [stdout] 105 |     pub fn verify_sub_chain(&self, pre_state: &State, chain: &[Block]) -> bool {
[INFO] [stdout]     |                                    ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_pre_state`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chain`
[INFO] [stdout]    --> src/c2_blockchain/p6_rich_state.rs:105:55
[INFO] [stdout]     |
[INFO] [stdout] 105 |     pub fn verify_sub_chain(&self, pre_state: &State, chain: &[Block]) -> bool {
[INFO] [stdout]     |                                                       ^^^^^ help: if this is intentional, prefix it with an underscore: `_chain`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parent`
[INFO] [stdout]    --> src/c2_blockchain/p6_rich_state.rs:121:48
[INFO] [stdout]     |
[INFO] [stdout] 121 | fn build_invalid_child_block_with_valid_header(parent: &Header, pre_state: &State) -> Block {
[INFO] [stdout]     |                                                ^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pre_state`
[INFO] [stdout]    --> src/c2_blockchain/p6_rich_state.rs:121:65
[INFO] [stdout]     |
[INFO] [stdout] 121 | fn build_invalid_child_block_with_valid_header(parent: &Header, pre_state: &State) -> Block {
[INFO] [stdout]     |                                                                 ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_pre_state`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `header`
[INFO] [stdout]   --> src/c3_consensus/p1_pow.rs:21:42
[INFO] [stdout]    |
[INFO] [stdout] 21 |     fn validate(&self, _: &Self::Digest, header: &Header<Self::Digest>) -> bool {
[INFO] [stdout]    |                                          ^^^^^^ help: if this is intentional, prefix it with an underscore: `_header`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `partial_header`
[INFO] [stdout]   --> src/c3_consensus/p1_pow.rs:27:38
[INFO] [stdout]    |
[INFO] [stdout] 27 |     fn seal(&self, _: &Self::Digest, partial_header: Header<()>) -> Option<Header<Self::Digest>> {
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_partial_header`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `header`
[INFO] [stdout]   --> src/c3_consensus/p2_dictator.rs:23:42
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn validate(&self, _: &Self::Digest, header: &Header<Self::Digest>) -> bool {
[INFO] [stdout]    |                                          ^^^^^^ help: if this is intentional, prefix it with an underscore: `_header`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `partial_header`
[INFO] [stdout]   --> src/c3_consensus/p2_dictator.rs:28:38
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn seal(&self, _: &Self::Digest, partial_header: Header<()>) -> Option<Header<Self::Digest>> {
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_partial_header`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parent_digest`
[INFO] [stdout]   --> src/c3_consensus/p3_poa.rs:22:24
[INFO] [stdout]    |
[INFO] [stdout] 22 |     fn validate(&self, parent_digest: &Self::Digest, header: &Header<Self::Digest>) -> bool {
[INFO] [stdout]    |                        ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent_digest`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `header`
[INFO] [stdout]   --> src/c3_consensus/p3_poa.rs:22:54
[INFO] [stdout]    |
[INFO] [stdout] 22 |     fn validate(&self, parent_digest: &Self::Digest, header: &Header<Self::Digest>) -> bool {
[INFO] [stdout]    |                                                      ^^^^^^ help: if this is intentional, prefix it with an underscore: `_header`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parent_digest`
[INFO] [stdout]   --> src/c3_consensus/p3_poa.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |         parent_digest: &Self::Digest,
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent_digest`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `partial_header`
[INFO] [stdout]   --> src/c3_consensus/p3_poa.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |         partial_header: Header<()>,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_partial_header`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parent_digest`
[INFO] [stdout]   --> src/c3_consensus/p3_poa.rs:45:24
[INFO] [stdout]    |
[INFO] [stdout] 45 |     fn validate(&self, parent_digest: &Self::Digest, header: &Header<Self::Digest>) -> bool {
[INFO] [stdout]    |                        ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent_digest`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `header`
[INFO] [stdout]   --> src/c3_consensus/p3_poa.rs:45:54
[INFO] [stdout]    |
[INFO] [stdout] 45 |     fn validate(&self, parent_digest: &Self::Digest, header: &Header<Self::Digest>) -> bool {
[INFO] [stdout]    |                                                      ^^^^^^ help: if this is intentional, prefix it with an underscore: `_header`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parent_digest`
[INFO] [stdout]   --> src/c3_consensus/p3_poa.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |         parent_digest: &Self::Digest,
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent_digest`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `partial_header`
[INFO] [stdout]   --> src/c3_consensus/p3_poa.rs:52:9
[INFO] [stdout]    |
[INFO] [stdout] 52 |         partial_header: Header<()>,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_partial_header`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parent_digest`
[INFO] [stdout]   --> src/c3_consensus/p3_poa.rs:82:24
[INFO] [stdout]    |
[INFO] [stdout] 82 |     fn validate(&self, parent_digest: &Self::Digest, header: &Header<Self::Digest>) -> bool {
[INFO] [stdout]    |                        ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent_digest`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `header`
[INFO] [stdout]   --> src/c3_consensus/p3_poa.rs:82:54
[INFO] [stdout]    |
[INFO] [stdout] 82 |     fn validate(&self, parent_digest: &Self::Digest, header: &Header<Self::Digest>) -> bool {
[INFO] [stdout]    |                                                      ^^^^^^ help: if this is intentional, prefix it with an underscore: `_header`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parent_digest`
[INFO] [stdout]   --> src/c3_consensus/p3_poa.rs:88:9
[INFO] [stdout]    |
[INFO] [stdout] 88 |         parent_digest: &Self::Digest,
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent_digest`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `partial_header`
[INFO] [stdout]   --> src/c3_consensus/p3_poa.rs:89:9
[INFO] [stdout]    |
[INFO] [stdout] 89 |         partial_header: Header<()>,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_partial_header`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parent_digest`
[INFO] [stdout]   --> src/c3_consensus/p4_even_only.rs:19:24
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn validate(&self, parent_digest: &Self::Digest, header: &Header<Self::Digest>) -> bool {
[INFO] [stdout]    |                        ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent_digest`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `header`
[INFO] [stdout]   --> src/c3_consensus/p4_even_only.rs:19:54
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn validate(&self, parent_digest: &Self::Digest, header: &Header<Self::Digest>) -> bool {
[INFO] [stdout]    |                                                      ^^^^^^ help: if this is intentional, prefix it with an underscore: `_header`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parent_digest`
[INFO] [stdout]   --> src/c3_consensus/p4_even_only.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |         parent_digest: &Self::Digest,
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent_digest`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `partial_header`
[INFO] [stdout]   --> src/c3_consensus/p4_even_only.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |         partial_header: Header<()>,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_partial_header`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parent_digest`
[INFO] [stdout]   --> src/c3_consensus/p5_interleave.rs:52:24
[INFO] [stdout]    |
[INFO] [stdout] 52 |     fn validate(&self, parent_digest: &Self::Digest, header: &Header<Self::Digest>) -> bool {
[INFO] [stdout]    |                        ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent_digest`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `header`
[INFO] [stdout]   --> src/c3_consensus/p5_interleave.rs:52:54
[INFO] [stdout]    |
[INFO] [stdout] 52 |     fn validate(&self, parent_digest: &Self::Digest, header: &Header<Self::Digest>) -> bool {
[INFO] [stdout]    |                                                      ^^^^^^ help: if this is intentional, prefix it with an underscore: `_header`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parent_digest`
[INFO] [stdout]   --> src/c3_consensus/p5_interleave.rs:58:9
[INFO] [stdout]    |
[INFO] [stdout] 58 |         parent_digest: &Self::Digest,
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent_digest`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `partial_header`
[INFO] [stdout]   --> src/c3_consensus/p5_interleave.rs:59:9
[INFO] [stdout]    |
[INFO] [stdout] 59 |         partial_header: Header<()>,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_partial_header`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parent_digest`
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:31:24
[INFO] [stdout]    |
[INFO] [stdout] 31 |     fn validate(&self, parent_digest: &Self::Digest, header: &Header<Self::Digest>) -> bool {
[INFO] [stdout]    |                        ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent_digest`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `header`
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:31:54
[INFO] [stdout]    |
[INFO] [stdout] 31 |     fn validate(&self, parent_digest: &Self::Digest, header: &Header<Self::Digest>) -> bool {
[INFO] [stdout]    |                                                      ^^^^^^ help: if this is intentional, prefix it with an underscore: `_header`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parent_digest`
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |         parent_digest: &Self::Digest,
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent_digest`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `partial_header`
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |         partial_header: Header<()>,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_partial_header`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fork_height`
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:47:5
[INFO] [stdout]    |
[INFO] [stdout] 47 |     fork_height: u64,
[INFO] [stdout]    |     ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_fork_height`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `initial_authorities`
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:48:5
[INFO] [stdout]    |
[INFO] [stdout] 48 |     initial_authorities: Vec<ConsensusAuthority>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_initial_authorities`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `final_authorities`
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:49:5
[INFO] [stdout]    |
[INFO] [stdout] 49 |     final_authorities: Vec<ConsensusAuthority>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_final_authorities`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fork_height`
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:56:5
[INFO] [stdout]    |
[INFO] [stdout] 56 |     fork_height: u64,
[INFO] [stdout]    |     ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_fork_height`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `initial_difficulty`
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:57:5
[INFO] [stdout]    |
[INFO] [stdout] 57 |     initial_difficulty: u64,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_initial_difficulty`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `final_difficulty`
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:58:5
[INFO] [stdout]    |
[INFO] [stdout] 58 |     final_difficulty: u64,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_final_difficulty`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fork_height`
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:70:49
[INFO] [stdout]    |
[INFO] [stdout] 70 | fn even_after_given_height<Original: Consensus>(fork_height: u64) -> impl Consensus {
[INFO] [stdout]    |                                                 ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_fork_height`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fork_height`
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:81:5
[INFO] [stdout]    |
[INFO] [stdout] 81 |     fork_height: u64,
[INFO] [stdout]    |     ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_fork_height`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `difficulty`
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:82:5
[INFO] [stdout]    |
[INFO] [stdout] 82 |     difficulty: u64,
[INFO] [stdout]    |     ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_difficulty`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `authorities`
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:83:5
[INFO] [stdout]    |
[INFO] [stdout] 83 |     authorities: Vec<ConsensusAuthority>,
[INFO] [stdout]    |     ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_authorities`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parent_digest`
[INFO] [stdout]   --> src/c3_consensus/mod.rs:76:9
[INFO] [stdout]    |
[INFO] [stdout] 76 |         parent_digest: &Self::Digest,
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent_digest`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chain`
[INFO] [stdout]   --> src/c3_consensus/mod.rs:77:9
[INFO] [stdout]    |
[INFO] [stdout] 77 |         chain: &[Header<Self::Digest>],
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_chain`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `partial_header`
[INFO] [stdout]    --> src/c3_consensus/mod.rs:101:38
[INFO] [stdout]     |
[INFO] [stdout] 101 |     fn seal(&self, _: &Self::Digest, partial_header: Header<()>) -> Option<Header<Self::Digest>> {
[INFO] [stdout]     |                                      ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_partial_header`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `genesis_state_root`
[INFO] [stdout]   --> src/c4_client/p1_data_structure.rs:26:16
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn genesis(genesis_state_root: Hash) -> Self {
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_genesis_state_root`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `state_root`
[INFO] [stdout]   --> src/c4_client/p1_data_structure.rs:31:21
[INFO] [stdout]    |
[INFO] [stdout] 31 |     fn child(&self, state_root: Hash, extrinsics_root: Hash) -> Self {
[INFO] [stdout]    |                     ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_state_root`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `extrinsics_root`
[INFO] [stdout]   --> src/c4_client/p1_data_structure.rs:31:39
[INFO] [stdout]    |
[INFO] [stdout] 31 |     fn child(&self, state_root: Hash, extrinsics_root: Hash) -> Self {
[INFO] [stdout]    |                                       ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_extrinsics_root`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `child`
[INFO] [stdout]   --> src/c4_client/p1_data_structure.rs:36:28
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn verify_child(&self, child: &Self) -> bool {
[INFO] [stdout]    |                            ^^^^^ help: if this is intentional, prefix it with an underscore: `_child`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chain`
[INFO] [stdout]   --> src/c4_client/p1_data_structure.rs:41:32
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn verify_sub_chain(&self, chain: &[Self]) -> bool {
[INFO] [stdout]    |                                ^^^^^ help: if this is intentional, prefix it with an underscore: `_chain`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `genesis_state`
[INFO] [stdout]   --> src/c4_client/p1_data_structure.rs:53:20
[INFO] [stdout]    |
[INFO] [stdout] 53 |     pub fn genesis(genesis_state: &SM::State) -> Self {
[INFO] [stdout]    |                    ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_genesis_state`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pre_state`
[INFO] [stdout]   --> src/c4_client/p1_data_structure.rs:58:25
[INFO] [stdout]    |
[INFO] [stdout] 58 |     pub fn child(&self, pre_state: &SM::State, extrinsics: Vec<u8>) -> Self {
[INFO] [stdout]    |                         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_pre_state`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `extrinsics`
[INFO] [stdout]   --> src/c4_client/p1_data_structure.rs:58:48
[INFO] [stdout]    |
[INFO] [stdout] 58 |     pub fn child(&self, pre_state: &SM::State, extrinsics: Vec<u8>) -> Self {
[INFO] [stdout]    |                                                ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_extrinsics`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pre_state`
[INFO] [stdout]   --> src/c4_client/p1_data_structure.rs:63:36
[INFO] [stdout]    |
[INFO] [stdout] 63 |     pub fn verify_sub_chain(&self, pre_state: &SM::State, chain: &[Self]) -> bool {
[INFO] [stdout]    |                                    ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_pre_state`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chain`
[INFO] [stdout]   --> src/c4_client/p1_data_structure.rs:63:59
[INFO] [stdout]    |
[INFO] [stdout] 63 |     pub fn verify_sub_chain(&self, pre_state: &SM::State, chain: &[Self]) -> bool {
[INFO] [stdout]    |                                                           ^^^^^ help: if this is intentional, prefix it with an underscore: `_chain`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/c4_client/p1_data_structure.rs:71:5
[INFO] [stdout]    |
[INFO] [stdout] 71 |     n: u64,
[INFO] [stdout]    |     ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `genesis_state`
[INFO] [stdout]   --> src/c4_client/p1_data_structure.rs:72:5
[INFO] [stdout]    |
[INFO] [stdout] 72 |     genesis_state: &SM::State,
[INFO] [stdout]    |     ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_genesis_state`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `genesis_state`
[INFO] [stdout]   --> src/c4_client/p1_data_structure.rs:84:12
[INFO] [stdout]    |
[INFO] [stdout] 84 |     fn new(genesis_state: SM::State) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_genesis_state`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `block_hash`
[INFO] [stdout]   --> src/c4_client/p2_importing_blocks.rs:41:25
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn get_block(&self, block_hash: u64) -> Option<Block<C, SM>> {
[INFO] [stdout]    |                         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_block_hash`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `block_hash`
[INFO] [stdout]   --> src/c4_client/p2_importing_blocks.rs:45:25
[INFO] [stdout]    |
[INFO] [stdout] 45 |     fn get_state(&self, block_hash: u64) -> Option<<SM as StateMachine>::State> {
[INFO] [stdout]    |                         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_block_hash`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `block_hash`
[INFO] [stdout]   --> src/c4_client/p2_importing_blocks.rs:49:23
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn is_leaf(&self, block_hash: u64) -> Option<bool> {
[INFO] [stdout]    |                       ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_block_hash`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `header`
[INFO] [stdout]   --> src/c4_client/p3_fork_choice.rs:32:26
[INFO] [stdout]    |
[INFO] [stdout] 32 |     fn best_block(&self, header: Header<C::Digest>) -> Option<u64> {
[INFO] [stdout]    |                          ^^^^^^ help: if this is intentional, prefix it with an underscore: `_header`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `header`
[INFO] [stdout]   --> src/c4_client/p3_fork_choice.rs:36:31
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn import_hook(&mut self, header: Header<C::Digest>) {
[INFO] [stdout]    |                               ^^^^^^ help: if this is intentional, prefix it with an underscore: `_header`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `header`
[INFO] [stdout]   --> src/c4_client/p3_fork_choice.rs:49:26
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn best_block(&self, header: Header<u64>) -> Option<u64> {
[INFO] [stdout]    |                          ^^^^^^ help: if this is intentional, prefix it with an underscore: `_header`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `header`
[INFO] [stdout]   --> src/c4_client/p3_fork_choice.rs:53:31
[INFO] [stdout]    |
[INFO] [stdout] 53 |     fn import_hook(&mut self, header: Header<u64>) {
[INFO] [stdout]    |                               ^^^^^^ help: if this is intentional, prefix it with an underscore: `_header`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `header`
[INFO] [stdout]   --> src/c4_client/p3_fork_choice.rs:66:26
[INFO] [stdout]    |
[INFO] [stdout] 66 |     fn best_block(&self, header: Header<ConsensusAuthority>) -> Option<u64> {
[INFO] [stdout]    |                          ^^^^^^ help: if this is intentional, prefix it with an underscore: `_header`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `header`
[INFO] [stdout]   --> src/c4_client/p3_fork_choice.rs:70:31
[INFO] [stdout]    |
[INFO] [stdout] 70 |     fn import_hook(&mut self, header: Header<ConsensusAuthority>) {
[INFO] [stdout]    |                               ^^^^^^ help: if this is intentional, prefix it with an underscore: `_header`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `header`
[INFO] [stdout]   --> src/c4_client/p3_fork_choice.rs:83:26
[INFO] [stdout]    |
[INFO] [stdout] 83 |     fn best_block(&self, header: Header<u64>) -> Option<u64> {
[INFO] [stdout]    |                          ^^^^^^ help: if this is intentional, prefix it with an underscore: `_header`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `header`
[INFO] [stdout]   --> src/c4_client/p3_fork_choice.rs:87:31
[INFO] [stdout]    |
[INFO] [stdout] 87 |     fn import_hook(&mut self, header: Header<u64>) {
[INFO] [stdout]    |                               ^^^^^^ help: if this is intentional, prefix it with an underscore: `_header`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/c4_client/p4_transaction_pool.rs:48:42
[INFO] [stdout]    |
[INFO] [stdout] 48 |     pub fn submit_transaction(&mut self, t: SM::Transition) {
[INFO] [stdout]    |                                          ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/c4_client/p4_transaction_pool.rs:59:33
[INFO] [stdout]    |
[INFO] [stdout] 59 |     pub fn pool_contains(&self, t: SM::Transition) -> bool {
[INFO] [stdout]    |                                 ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/c4_client/p4_transaction_pool.rs:68:30
[INFO] [stdout]    |
[INFO] [stdout] 68 |     fn try_insert(&mut self, t: <SM as StateMachine>::Transition) -> bool {
[INFO] [stdout]    |                              ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/c4_client/p4_transaction_pool.rs:72:26
[INFO] [stdout]    |
[INFO] [stdout] 72 |     fn remove(&mut self, t: <SM as StateMachine>::Transition) {
[INFO] [stdout]    |                          ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/c4_client/p4_transaction_pool.rs:80:24
[INFO] [stdout]    |
[INFO] [stdout] 80 |     fn contains(&self, t: <SM as StateMachine>::Transition) -> bool {
[INFO] [stdout]    |                        ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/c4_client/p4_transaction_pool.rs:110:30
[INFO] [stdout]     |
[INFO] [stdout] 110 |     fn try_insert(&mut self, t: <SM as StateMachine>::Transition) -> bool {
[INFO] [stdout]     |                              ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/c4_client/p4_transaction_pool.rs:114:26
[INFO] [stdout]     |
[INFO] [stdout] 114 |     fn remove(&mut self, t: <SM as StateMachine>::Transition) {
[INFO] [stdout]     |                          ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/c4_client/p4_transaction_pool.rs:122:24
[INFO] [stdout]     |
[INFO] [stdout] 122 |     fn contains(&self, t: <SM as StateMachine>::Transition) -> bool {
[INFO] [stdout]     |                        ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/c4_client/p4_transaction_pool.rs:145:30
[INFO] [stdout]     |
[INFO] [stdout] 145 |     fn try_insert(&mut self, t: <SM as StateMachine>::Transition) -> bool {
[INFO] [stdout]     |                              ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/c4_client/p4_transaction_pool.rs:149:26
[INFO] [stdout]     |
[INFO] [stdout] 149 |     fn remove(&mut self, t: <SM as StateMachine>::Transition) {
[INFO] [stdout]     |                          ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/c4_client/p4_transaction_pool.rs:157:24
[INFO] [stdout]     |
[INFO] [stdout] 157 |     fn contains(&self, t: <SM as StateMachine>::Transition) -> bool {
[INFO] [stdout]     |                        ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `transactions`
[INFO] [stdout]   --> src/c4_client/p5_authoring_blocks.rs:13:54
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn author_and_import_manual_block(&mut self, transactions: Vec<SM::Transition>, parent_hash: u64) {
[INFO] [stdout]    |                                                      ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_transactions`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parent_hash`
[INFO] [stdout]   --> src/c4_client/p5_authoring_blocks.rs:13:89
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn author_and_import_manual_block(&mut self, transactions: Vec<SM::Transition>, parent_hash: u64) {
[INFO] [stdout]    |                                                                                         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent_hash`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `block_hash`
[INFO] [stdout]   --> src/c4_client/p6_finality.rs:13:47
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn manually_finalize_block(&mut self, block_hash: u64) -> bool {
[INFO] [stdout]    |                                               ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_block_hash`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `hash` is never used
[INFO] [stdout]   --> src/lib.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn hash<T: Hash>(t: &T) -> u64 {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `StateMachine` is never used
[INFO] [stdout]   --> src/c1_state_machine/mod.rs:12:11
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub trait StateMachine {
[INFO] [stdout]    |           ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `User` is never used
[INFO] [stdout]   --> src/c1_state_machine/mod.rs:32:10
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub enum User {
[INFO] [stdout]    |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `LightSwitch` is never constructed
[INFO] [stdout]  --> src/c1_state_machine/p1_switches.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub struct LightSwitch;
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `WeirdSwitchMachine` is never constructed
[INFO] [stdout]   --> src/c1_state_machine/p1_switches.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub struct WeirdSwitchMachine;
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TwoSwitches` is never constructed
[INFO] [stdout]   --> src/c1_state_machine/p1_switches.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub struct TwoSwitches {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Toggle` is never used
[INFO] [stdout]   --> src/c1_state_machine/p1_switches.rs:34:10
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub enum Toggle {
[INFO] [stdout]    |          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ClothesMachine` is never constructed
[INFO] [stdout]  --> src/c1_state_machine/p2_laundry_machine.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub struct ClothesMachine;
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ClothesState` is never used
[INFO] [stdout]   --> src/c1_state_machine/p2_laundry_machine.rs:13:10
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub enum ClothesState {
[INFO] [stdout]    |          ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ClothesAction` is never used
[INFO] [stdout]   --> src/c1_state_machine/p2_laundry_machine.rs:27:10
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub enum ClothesAction {
[INFO] [stdout]    |          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Key` is never used
[INFO] [stdout]  --> src/c1_state_machine/p3_atm.rs:9:10
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub enum Key {
[INFO] [stdout]   |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Action` is never used
[INFO] [stdout]   --> src/c1_state_machine/p3_atm.rs:18:10
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub enum Action {
[INFO] [stdout]    |          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Auth` is never used
[INFO] [stdout]   --> src/c1_state_machine/p3_atm.rs:28:6
[INFO] [stdout]    |
[INFO] [stdout] 28 | enum Auth {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Atm` is never constructed
[INFO] [stdout]   --> src/c1_state_machine/p3_atm.rs:46:12
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub struct Atm {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `AccountedCurrency` is never constructed
[INFO] [stdout]   --> src/c1_state_machine/p4_accounted_currency.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub struct AccountedCurrency;
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Balances` is never used
[INFO] [stdout]   --> src/c1_state_machine/p4_accounted_currency.rs:24:6
[INFO] [stdout]    |
[INFO] [stdout] 24 | type Balances = HashMap<User, u64>;
[INFO] [stdout]    |      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `AccountingTransaction` is never used
[INFO] [stdout]   --> src/c1_state_machine/p4_accounted_currency.rs:27:10
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub enum AccountingTransaction {
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DigitalCashSystem` is never constructed
[INFO] [stdout]   --> src/c1_state_machine/p5_digital_cash.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct DigitalCashSystem;
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Bill` is never constructed
[INFO] [stdout]   --> src/c1_state_machine/p5_digital_cash.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub struct Bill {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `State` is never constructed
[INFO] [stdout]   --> src/c1_state_machine/p5_digital_cash.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct State {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `set_serial`, `next_serial`, `increment_serial`, and `add_bill` are never used
[INFO] [stdout]   --> src/c1_state_machine/p5_digital_cash.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 33 | impl State {
[INFO] [stdout]    | ---------- associated items in this implementation
[INFO] [stdout] 34 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 41 |     pub fn set_serial(&mut self, serial: u64) {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 45 |     pub fn next_serial(&self) -> u64 {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 |     fn increment_serial(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 53 |     fn add_bill(&mut self, elem: Bill) {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `CashTransaction` is never used
[INFO] [stdout]   --> src/c1_state_machine/p5_digital_cash.rs:77:10
[INFO] [stdout]    |
[INFO] [stdout] 77 | pub enum CashTransaction {
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `State` is never constructed
[INFO] [stdout]   --> src/c1_state_machine/p6_open_ended.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub struct State {}
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Transition` is never used
[INFO] [stdout]   --> src/c1_state_machine/p6_open_ended.rs:27:10
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub enum Transition {}
[INFO] [stdout]    |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Hash` is never used
[INFO] [stdout]   --> src/c2_blockchain/p1_header_chain.rs:10:6
[INFO] [stdout]    |
[INFO] [stdout] 10 | type Hash = u64;
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Header` is never constructed
[INFO] [stdout]   --> src/c2_blockchain/p1_header_chain.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct Header {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `genesis`, `child`, and `verify_sub_chain` are never used
[INFO] [stdout]   --> src/c2_blockchain/p1_header_chain.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | impl Header {
[INFO] [stdout]    | ----------- associated items in this implementation
[INFO] [stdout] 26 |     /// Returns a new valid genesis header.
[INFO] [stdout] 27 |     fn genesis() -> Self {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 32 |     fn child(&self) -> Self {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 40 |     fn verify_sub_chain(&self, chain: &[Header]) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `build_valid_chain_length_5` is never used
[INFO] [stdout]   --> src/c2_blockchain/p1_header_chain.rs:48:4
[INFO] [stdout]    |
[INFO] [stdout] 48 | fn build_valid_chain_length_5() -> Vec<Header> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `build_an_invalid_chain` is never used
[INFO] [stdout]   --> src/c2_blockchain/p1_header_chain.rs:55:4
[INFO] [stdout]    |
[INFO] [stdout] 55 | fn build_an_invalid_chain() -> Vec<Header> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Hash` is never used
[INFO] [stdout]   --> src/c2_blockchain/p2_extrinsic_state.rs:14:6
[INFO] [stdout]    |
[INFO] [stdout] 14 | type Hash = u64;
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Header` is never constructed
[INFO] [stdout]   --> src/c2_blockchain/p2_extrinsic_state.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub struct Header {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `genesis`, `child`, and `verify_sub_chain` are never used
[INFO] [stdout]   --> src/c2_blockchain/p2_extrinsic_state.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | impl Header {
[INFO] [stdout]    | ----------- associated items in this implementation
[INFO] [stdout] 32 |     /// Returns a new valid genesis header.
[INFO] [stdout] 33 |     fn genesis() -> Self {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 38 |     fn child(&self, extrinsic: u64) -> Self {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 50 |     fn verify_sub_chain(&self, chain: &[Header]) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `build_valid_chain` is never used
[INFO] [stdout]   --> src/c2_blockchain/p2_extrinsic_state.rs:58:4
[INFO] [stdout]    |
[INFO] [stdout] 58 | fn build_valid_chain(n: u64) -> Vec<Header> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `build_an_invalid_chain` is never used
[INFO] [stdout]   --> src/c2_blockchain/p2_extrinsic_state.rs:72:4
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn build_an_invalid_chain() -> Vec<Header> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `build_forked_chain` is never used
[INFO] [stdout]   --> src/c2_blockchain/p2_extrinsic_state.rs:87:4
[INFO] [stdout]    |
[INFO] [stdout] 87 | fn build_forked_chain() -> (Vec<Header>, Vec<Header>) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Hash` is never used
[INFO] [stdout]   --> src/c2_blockchain/p3_consensus.rs:11:6
[INFO] [stdout]    |
[INFO] [stdout] 11 | type Hash = u64;
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `THRESHOLD` is never used
[INFO] [stdout]   --> src/c2_blockchain/p3_consensus.rs:16:11
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub const THRESHOLD: u64 = u64::max_value() / 100;
[INFO] [stdout]    |           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `FORK_HEIGHT` is never used
[INFO] [stdout]   --> src/c2_blockchain/p3_consensus.rs:20:7
[INFO] [stdout]    |
[INFO] [stdout] 20 | const FORK_HEIGHT: u64 = 2;
[INFO] [stdout]    |       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Header` is never constructed
[INFO] [stdout]   --> src/c2_blockchain/p3_consensus.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub struct Header {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `genesis`, `child`, `verify_sub_chain`, `verify_sub_chain_even`, and `verify_sub_chain_odd` are never used
[INFO] [stdout]   --> src/c2_blockchain/p3_consensus.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | impl Header {
[INFO] [stdout]    | ----------- associated items in this implementation
[INFO] [stdout] 38 |     /// Returns a new valid genesis header.
[INFO] [stdout] 39 |     fn genesis() -> Self {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |     fn child(&self, extrinsic: u64) -> Self {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 52 |     fn verify_sub_chain(&self, chain: &[Header]) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 64 |     fn verify_sub_chain_even(&self, chain: &[Header]) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 70 |     fn verify_sub_chain_odd(&self, chain: &[Header]) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `build_contentious_forked_chain` is never used
[INFO] [stdout]   --> src/c2_blockchain/p3_consensus.rs:91:4
[INFO] [stdout]    |
[INFO] [stdout] 91 | fn build_contentious_forked_chain() -> (Vec<Header>, Vec<Header>, Vec<Header>) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Hash` is never used
[INFO] [stdout]  --> src/c2_blockchain/p4_batched_extrinsics.rs:6:6
[INFO] [stdout]   |
[INFO] [stdout] 6 | type Hash = u64;
[INFO] [stdout]   |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Header` is never constructed
[INFO] [stdout]   --> src/c2_blockchain/p4_batched_extrinsics.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub struct Header {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `genesis`, `child`, `verify_child`, and `verify_sub_chain` are never used
[INFO] [stdout]   --> src/c2_blockchain/p4_batched_extrinsics.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 33 | impl Header {
[INFO] [stdout]    | ----------- associated items in this implementation
[INFO] [stdout] 34 |     /// Returns a new valid genesis header.
[INFO] [stdout] 35 |     pub fn genesis() -> Self {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 42 |     pub fn child(&self, extrinsics_root: Hash, state: u64) -> Self {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 53 |     fn verify_child(&self, child: &Header) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 64 |     fn verify_sub_chain(&self, chain: &[Header]) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Block` is never constructed
[INFO] [stdout]   --> src/c2_blockchain/p4_batched_extrinsics.rs:71:12
[INFO] [stdout]    |
[INFO] [stdout] 71 | pub struct Block {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `genesis`, `child`, and `verify_sub_chain` are never used
[INFO] [stdout]   --> src/c2_blockchain/p4_batched_extrinsics.rs:83:12
[INFO] [stdout]    |
[INFO] [stdout] 81 | impl Block {
[INFO] [stdout]    | ---------- associated items in this implementation
[INFO] [stdout] 82 |     /// Returns a new valid genesis block. By convention this block has no extrinsics.
[INFO] [stdout] 83 |     pub fn genesis() -> Self {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 89 |     pub fn child(&self, extrinsics: Vec<u64>) -> Self {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 96 |     pub fn verify_sub_chain(&self, chain: &[Block]) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `build_invalid_child_block_with_valid_header` is never used
[INFO] [stdout]    --> src/c2_blockchain/p4_batched_extrinsics.rs:109:4
[INFO] [stdout]     |
[INFO] [stdout] 109 | fn build_invalid_child_block_with_valid_header(parent: &Header) -> Block {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `ForkChoice` is never used
[INFO] [stdout]   --> src/c2_blockchain/p5_fork_choice.rs:17:11
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub trait ForkChoice {
[INFO] [stdout]    |           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `LongestChainRule` is never constructed
[INFO] [stdout]   --> src/c2_blockchain/p5_fork_choice.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub struct LongestChainRule;
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `HeaviestChainRule` is never constructed
[INFO] [stdout]   --> src/c2_blockchain/p5_fork_choice.rs:63:12
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub struct HeaviestChainRule;
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `mine_extra_hard` is never used
[INFO] [stdout]   --> src/c2_blockchain/p5_fork_choice.rs:69:4
[INFO] [stdout]    |
[INFO] [stdout] 69 | fn mine_extra_hard(block: &mut Block, threshold: u64) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MostBlocksWithEvenHash` is never constructed
[INFO] [stdout]   --> src/c2_blockchain/p5_fork_choice.rs:97:12
[INFO] [stdout]    |
[INFO] [stdout] 97 | pub struct MostBlocksWithEvenHash;
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_fork_one_side_longer_other_side_heavier` is never used
[INFO] [stdout]    --> src/c2_blockchain/p5_fork_choice.rs:132:4
[INFO] [stdout]     |
[INFO] [stdout] 132 | fn create_fork_one_side_longer_other_side_heavier() -> (Vec<Header>, Vec<Header>, Vec<Header>) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Hash` is never used
[INFO] [stdout]   --> src/c2_blockchain/p6_rich_state.rs:14:6
[INFO] [stdout]    |
[INFO] [stdout] 14 | type Hash = u64;
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `State` is never constructed
[INFO] [stdout]   --> src/c2_blockchain/p6_rich_state.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct State {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Header` is never constructed
[INFO] [stdout]   --> src/c2_blockchain/p6_rich_state.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub struct Header {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `genesis`, `child`, `verify_child`, and `verify_sub_chain` are never used
[INFO] [stdout]   --> src/c2_blockchain/p6_rich_state.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 47 | impl Header {
[INFO] [stdout]    | ----------- associated items in this implementation
[INFO] [stdout] 48 |     /// Returns a new valid genesis header.
[INFO] [stdout] 49 |     fn genesis(genesis_state_root: Hash) -> Self {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 57 |     fn child(&self, extrinsics_root: Hash, state_root: Hash) -> Self {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 62 |     fn verify_child(&self, child: &Header) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 67 |     fn verify_sub_chain(&self, chain: &[Header]) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Block` is never constructed
[INFO] [stdout]   --> src/c2_blockchain/p6_rich_state.rs:74:12
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub struct Block {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `genesis`, `child`, and `verify_sub_chain` are never used
[INFO] [stdout]    --> src/c2_blockchain/p6_rich_state.rs:91:12
[INFO] [stdout]     |
[INFO] [stdout]  89 | impl Block {
[INFO] [stdout]     | ---------- associated items in this implementation
[INFO] [stdout]  90 |     /// Returns a new valid genesis block. By convention this block has no extrinsics.
[INFO] [stdout]  91 |     pub fn genesis(genesis_state: &State) -> Self {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  96 |     pub fn child(&self, pre_state: &State, extrinsics: Vec<u64>) -> Self {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 105 |     pub fn verify_sub_chain(&self, pre_state: &State, chain: &[Block]) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `build_invalid_child_block_with_valid_header` is never used
[INFO] [stdout]    --> src/c2_blockchain/p6_rich_state.rs:121:4
[INFO] [stdout]     |
[INFO] [stdout] 121 | fn build_invalid_child_block_with_valid_header(parent: &Header, pre_state: &State) -> Block {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Hash` is never used
[INFO] [stdout]   --> src/c3_consensus/mod.rs:16:6
[INFO] [stdout]    |
[INFO] [stdout] 16 | type Hash = u64;
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Header` is never constructed
[INFO] [stdout]   --> src/c3_consensus/mod.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub struct Header<Digest> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Consensus` is never used
[INFO] [stdout]   --> src/c3_consensus/mod.rs:38:11
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub trait Consensus {
[INFO] [stdout]    |           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Alice`, `Bob`, and `Charlie` are never constructed
[INFO] [stdout]    --> src/c3_consensus/mod.rs:110:5
[INFO] [stdout]     |
[INFO] [stdout] 109 | pub enum ConsensusAuthority {
[INFO] [stdout]     |          ------------------ variants in this enum
[INFO] [stdout] 110 |     Alice,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout] 111 |     Bob,
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 112 |     Charlie,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ConsensusAuthority` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Pow` is never constructed
[INFO] [stdout]   --> src/c3_consensus/p1_pow.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct Pow {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `moderate_difficulty_pow` is never used
[INFO] [stdout]   --> src/c3_consensus/p1_pow.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub fn moderate_difficulty_pow() -> Pow {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `trivial_always_valid_pow` is never used
[INFO] [stdout]   --> src/c3_consensus/p1_pow.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub fn trivial_always_valid_pow() -> Pow {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DictatorConsensus` is never constructed
[INFO] [stdout]   --> src/c3_consensus/p2_dictator.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct DictatorConsensus {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SimplePoa` is never constructed
[INFO] [stdout]   --> src/c3_consensus/p3_poa.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct SimplePoa {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PoaRoundRobinByHeight` is never constructed
[INFO] [stdout]   --> src/c3_consensus/p3_poa.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | struct PoaRoundRobinByHeight {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PoaRoundRobinBySlot` is never constructed
[INFO] [stdout]   --> src/c3_consensus/p3_poa.rs:66:8
[INFO] [stdout]    |
[INFO] [stdout] 66 | struct PoaRoundRobinBySlot {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SlotDigest` is never constructed
[INFO] [stdout]   --> src/c3_consensus/p3_poa.rs:74:8
[INFO] [stdout]    |
[INFO] [stdout] 74 | struct SlotDigest {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `EvenOnly` is never constructed
[INFO] [stdout]   --> src/c3_consensus/p4_even_only.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct EvenOnly<Inner: Consensus> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `almost_valid_but_not_all_even` is never used
[INFO] [stdout]   --> src/c3_consensus/p4_even_only.rs:35:4
[INFO] [stdout]    |
[INFO] [stdout] 35 | fn almost_valid_but_not_all_even() -> Vec<Header<u64>> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `AlternatingPowPoa` is never constructed
[INFO] [stdout]   --> src/c3_consensus/p5_interleave.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct AlternatingPowPoa;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Pow` and `Poa` are never constructed
[INFO] [stdout]   --> src/c3_consensus/p5_interleave.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | enum PowOrPoaDigest {
[INFO] [stdout]    |      -------------- variants in this enum
[INFO] [stdout] 17 |     Pow(u64),
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 18 |     Poa(ConsensusAuthority),
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `PowOrPoaDigest` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Forked` is never constructed
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct Forked<D, Before, After> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `change_authorities` is never used
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:46:4
[INFO] [stdout]    |
[INFO] [stdout] 46 | fn change_authorities(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `change_difficulty` is never used
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:55:4
[INFO] [stdout]    |
[INFO] [stdout] 55 | fn change_difficulty(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `even_after_given_height` is never used
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:70:4
[INFO] [stdout]    |
[INFO] [stdout] 70 | fn even_after_given_height<Original: Consensus>(fork_height: u64) -> impl Consensus {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `pow_to_poa` is never used
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:80:4
[INFO] [stdout]    |
[INFO] [stdout] 80 | fn pow_to_poa(
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Hash` is never used
[INFO] [stdout]   --> src/c4_client/mod.rs:29:6
[INFO] [stdout]    |
[INFO] [stdout] 29 | type Hash = u64;
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FullClient` is never constructed
[INFO] [stdout]   --> src/c4_client/mod.rs:52:12
[INFO] [stdout]    |
[INFO] [stdout] 52 | pub struct FullClient<C, SM, FC, P>
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Hash` is never used
[INFO] [stdout]   --> src/c4_client/p1_data_structure.rs:22:6
[INFO] [stdout]    |
[INFO] [stdout] 22 | type Hash = u64;
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `genesis`, `child`, `verify_child`, and `verify_sub_chain` are never used
[INFO] [stdout]   --> src/c4_client/p1_data_structure.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl<Digest> Header<Digest> {
[INFO] [stdout]    | --------------------------- associated items in this implementation
[INFO] [stdout] 25 |     /// Returns a new valid genesis header.
[INFO] [stdout] 26 |     fn genesis(genesis_state_root: Hash) -> Self {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 31 |     fn child(&self, state_root: Hash, extrinsics_root: Hash) -> Self {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 36 |     fn verify_child(&self, child: &Self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 41 |     fn verify_sub_chain(&self, chain: &[Self]) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Block` is never constructed
[INFO] [stdout]   --> src/c4_client/p1_data_structure.rs:46:12
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub struct Block<C: Consensus, SM: StateMachine> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `genesis`, `child`, and `verify_sub_chain` are never used
[INFO] [stdout]   --> src/c4_client/p1_data_structure.rs:53:12
[INFO] [stdout]    |
[INFO] [stdout] 51 | impl<C: Consensus, SM: StateMachine> Block<C, SM> {
[INFO] [stdout]    | ------------------------------------------------- associated items in this implementation
[INFO] [stdout] 52 |     /// Returns a new valid genesis block. By convention this block has no extrinsics.
[INFO] [stdout] 53 |     pub fn genesis(genesis_state: &SM::State) -> Self {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 58 |     pub fn child(&self, pre_state: &SM::State, extrinsics: Vec<u8>) -> Self {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 63 |     pub fn verify_sub_chain(&self, pre_state: &SM::State, chain: &[Self]) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_empty_chain` is never used
[INFO] [stdout]   --> src/c4_client/p1_data_structure.rs:70:4
[INFO] [stdout]    |
[INFO] [stdout] 70 | fn create_empty_chain<C: Consensus, SM: StateMachine>(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/c4_client/p1_data_structure.rs:84:8
[INFO] [stdout]    |
[INFO] [stdout] 80 | / impl<C, SM, FC, P> FullClient<C, SM, FC, P>
[INFO] [stdout] 81 | | where
[INFO] [stdout] 82 | |     SM: StateMachine,
[INFO] [stdout]    | |_____________________- associated function in this implementation
[INFO] [stdout] 83 |   {
[INFO] [stdout] 84 |       fn new(genesis_state: SM::State) -> Self {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `ImportBlock` is never used
[INFO] [stdout]   --> src/c4_client/p2_importing_blocks.rs:10:11
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub trait ImportBlock<C: Consensus, SM: StateMachine> {
[INFO] [stdout]    |           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `ForkChoice` is never used
[INFO] [stdout]   --> src/c4_client/p3_fork_choice.rs:18:11
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub trait ForkChoice<C: Consensus> {
[INFO] [stdout]    |           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `LongestChain` is never constructed
[INFO] [stdout]   --> src/c4_client/p3_fork_choice.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub struct LongestChain {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `HeaviestChain` is never constructed
[INFO] [stdout]   --> src/c4_client/p3_fork_choice.rs:44:12
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub struct HeaviestChain {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MostAliceSigs` is never constructed
[INFO] [stdout]   --> src/c4_client/p3_fork_choice.rs:61:12
[INFO] [stdout]    |
[INFO] [stdout] 61 | pub struct MostAliceSigs {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Ghost` is never constructed
[INFO] [stdout]   --> src/c4_client/p3_fork_choice.rs:78:12
[INFO] [stdout]    |
[INFO] [stdout] 78 | pub struct Ghost {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `best_block` is never used
[INFO] [stdout]   --> src/c4_client/p3_fork_choice.rs:97:8
[INFO] [stdout]    |
[INFO] [stdout] 95 | impl<C, SM, FC, P> FullClient<C, SM, FC, P> {
[INFO] [stdout]    | ------------------------------------------- method in this implementation
[INFO] [stdout] 96 |     /// Return the hash of the best block currently known to the client
[INFO] [stdout] 97 |     fn best_block(&self) -> u64 {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `TransactionPool` is never used
[INFO] [stdout]   --> src/c4_client/p4_transaction_pool.rs:17:11
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub trait TransactionPool<SM: StateMachine> {
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `submit_transaction`, `pool_size`, and `pool_contains` are never used
[INFO] [stdout]   --> src/c4_client/p4_transaction_pool.rs:48:12
[INFO] [stdout]    |
[INFO] [stdout] 42 | / impl<C, SM, FC, P> FullClient<C, SM, FC, P>           
[INFO] [stdout] 43 | |     where
[INFO] [stdout] 44 | |     SM: StateMachine,
[INFO] [stdout]    | |_____________________- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 48 |       pub fn submit_transaction(&mut self, t: SM::Transition) {
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 54 |       pub fn pool_size(&self) -> usize {
[INFO] [stdout]    |              ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 59 |       pub fn pool_contains(&self, t: SM::Transition) -> bool {
[INFO] [stdout]    |              ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SimplePool` is never constructed
[INFO] [stdout]   --> src/c4_client/p4_transaction_pool.rs:65:12
[INFO] [stdout]    |
[INFO] [stdout] 65 | pub struct SimplePool<SM: StateMachine>(VecDeque<SM::Transition>);
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PriorityPool` is never constructed
[INFO] [stdout]   --> src/c4_client/p4_transaction_pool.rs:96:12
[INFO] [stdout]    |
[INFO] [stdout] 96 | pub struct PriorityPool<T, P: Fn(T) -> u64> {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CensoringPool` is never constructed
[INFO] [stdout]    --> src/c4_client/p4_transaction_pool.rs:134:12
[INFO] [stdout]     |
[INFO] [stdout] 134 | pub struct CensoringPool<T, P: Fn(T) -> bool> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `author_and_import_manual_block` and `author_and_import_automatic_block` are never used
[INFO] [stdout]   --> src/c4_client/p5_authoring_blocks.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout]  7 | / impl<C, SM, FC, P> FullClient<C, SM, FC, P>
[INFO] [stdout]  8 | |     where
[INFO] [stdout]  9 | |     SM: StateMachine,
[INFO] [stdout]    | |_____________________- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 13 |       pub fn author_and_import_manual_block(&mut self, transactions: Vec<SM::Transition>, parent_hash: u64) {
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |       pub fn author_and_import_automatic_block(&self) {
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `manually_finalize_block` is never used
[INFO] [stdout]   --> src/c4_client/p6_finality.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl<C, SM, FC, P> FullClient<C, SM, FC, P> {
[INFO] [stdout]    | ------------------------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 13 |     pub fn manually_finalize_block(&mut self, block_hash: u64) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `diy-blockchain` (lib) due to 8 previous errors; 244 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused variable: `starting_state`
[INFO] [stdout]   --> src/c1_state_machine/p1_switches.rs:17:19
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn next_state(starting_state: &bool, t: &()) -> bool {
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_starting_state`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/c1_state_machine/p1_switches.rs:17:42
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn next_state(starting_state: &bool, t: &()) -> bool {
[INFO] [stdout]    |                                          ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `starting_state`
[INFO] [stdout]   --> src/c1_state_machine/p1_switches.rs:44:19
[INFO] [stdout]    |
[INFO] [stdout] 44 |     fn next_state(starting_state: &TwoSwitches, t: &Toggle) -> TwoSwitches {
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_starting_state`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/c1_state_machine/p1_switches.rs:44:49
[INFO] [stdout]    |
[INFO] [stdout] 44 |     fn next_state(starting_state: &TwoSwitches, t: &Toggle) -> TwoSwitches {
[INFO] [stdout]    |                                                 ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `starting_state`
[INFO] [stdout]   --> src/c1_state_machine/p2_laundry_machine.rs:42:19
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn next_state(starting_state: &ClothesState, t: &ClothesAction) -> ClothesState {
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_starting_state`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/c1_state_machine/p2_laundry_machine.rs:42:50
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn next_state(starting_state: &ClothesState, t: &ClothesAction) -> ClothesState {
[INFO] [stdout]    |                                                  ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `starting_state`
[INFO] [stdout]   --> src/c1_state_machine/p3_atm.rs:60:19
[INFO] [stdout]    |
[INFO] [stdout] 60 |     fn next_state(starting_state: &Self::State, t: &Self::Transition) -> Self::State {
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_starting_state`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/c1_state_machine/p3_atm.rs:60:49
[INFO] [stdout]    |
[INFO] [stdout] 60 |     fn next_state(starting_state: &Self::State, t: &Self::Transition) -> Self::State {
[INFO] [stdout]    |                                                 ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `starting_state`
[INFO] [stdout]   --> src/c1_state_machine/p4_accounted_currency.rs:47:19
[INFO] [stdout]    |
[INFO] [stdout] 47 |     fn next_state(starting_state: &Balances, t: &AccountingTransaction) -> Balances {
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_starting_state`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/c1_state_machine/p4_accounted_currency.rs:47:46
[INFO] [stdout]    |
[INFO] [stdout] 47 |     fn next_state(starting_state: &Balances, t: &AccountingTransaction) -> Balances {
[INFO] [stdout]    |                                              ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `starting_state`
[INFO] [stdout]   --> src/c1_state_machine/p5_digital_cash.rs:96:19
[INFO] [stdout]    |
[INFO] [stdout] 96 |     fn next_state(starting_state: &Self::State, t: &Self::Transition) -> Self::State {
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_starting_state`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/c1_state_machine/p5_digital_cash.rs:96:49
[INFO] [stdout]    |
[INFO] [stdout] 96 |     fn next_state(starting_state: &Self::State, t: &Self::Transition) -> Self::State {
[INFO] [stdout]    |                                                 ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chain`
[INFO] [stdout]   --> src/c2_blockchain/p1_header_chain.rs:40:32
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn verify_sub_chain(&self, chain: &[Header]) -> bool {
[INFO] [stdout]    |                                ^^^^^ help: if this is intentional, prefix it with an underscore: `_chain`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `extrinsic`
[INFO] [stdout]   --> src/c2_blockchain/p2_extrinsic_state.rs:38:21
[INFO] [stdout]    |
[INFO] [stdout] 38 |     fn child(&self, extrinsic: u64) -> Self {
[INFO] [stdout]    |                     ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_extrinsic`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chain`
[INFO] [stdout]   --> src/c2_blockchain/p2_extrinsic_state.rs:50:32
[INFO] [stdout]    |
[INFO] [stdout] 50 |     fn verify_sub_chain(&self, chain: &[Header]) -> bool {
[INFO] [stdout]    |                                ^^^^^ help: if this is intentional, prefix it with an underscore: `_chain`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/c2_blockchain/p2_extrinsic_state.rs:58:22
[INFO] [stdout]    |
[INFO] [stdout] 58 | fn build_valid_chain(n: u64) -> Vec<Header> {
[INFO] [stdout]    |                      ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `extrinsic`
[INFO] [stdout]   --> src/c2_blockchain/p3_consensus.rs:44:21
[INFO] [stdout]    |
[INFO] [stdout] 44 |     fn child(&self, extrinsic: u64) -> Self {
[INFO] [stdout]    |                     ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_extrinsic`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chain`
[INFO] [stdout]   --> src/c2_blockchain/p3_consensus.rs:52:32
[INFO] [stdout]    |
[INFO] [stdout] 52 |     fn verify_sub_chain(&self, chain: &[Header]) -> bool {
[INFO] [stdout]    |                                ^^^^^ help: if this is intentional, prefix it with an underscore: `_chain`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chain`
[INFO] [stdout]   --> src/c2_blockchain/p3_consensus.rs:64:37
[INFO] [stdout]    |
[INFO] [stdout] 64 |     fn verify_sub_chain_even(&self, chain: &[Header]) -> bool {
[INFO] [stdout]    |                                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_chain`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chain`
[INFO] [stdout]   --> src/c2_blockchain/p3_consensus.rs:70:36
[INFO] [stdout]    |
[INFO] [stdout] 70 |     fn verify_sub_chain_odd(&self, chain: &[Header]) -> bool {
[INFO] [stdout]    |                                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_chain`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `extrinsics_root`
[INFO] [stdout]   --> src/c2_blockchain/p4_batched_extrinsics.rs:42:25
[INFO] [stdout]    |
[INFO] [stdout] 42 |     pub fn child(&self, extrinsics_root: Hash, state: u64) -> Self {
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_extrinsics_root`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `state`
[INFO] [stdout]   --> src/c2_blockchain/p4_batched_extrinsics.rs:42:48
[INFO] [stdout]    |
[INFO] [stdout] 42 |     pub fn child(&self, extrinsics_root: Hash, state: u64) -> Self {
[INFO] [stdout]    |                                                ^^^^^ help: if this is intentional, prefix it with an underscore: `_state`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `child`
[INFO] [stdout]   --> src/c2_blockchain/p4_batched_extrinsics.rs:53:28
[INFO] [stdout]    |
[INFO] [stdout] 53 |     fn verify_child(&self, child: &Header) -> bool {
[INFO] [stdout]    |                            ^^^^^ help: if this is intentional, prefix it with an underscore: `_child`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chain`
[INFO] [stdout]   --> src/c2_blockchain/p4_batched_extrinsics.rs:64:32
[INFO] [stdout]    |
[INFO] [stdout] 64 |     fn verify_sub_chain(&self, chain: &[Header]) -> bool {
[INFO] [stdout]    |                                ^^^^^ help: if this is intentional, prefix it with an underscore: `_chain`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `extrinsics`
[INFO] [stdout]   --> src/c2_blockchain/p4_batched_extrinsics.rs:89:25
[INFO] [stdout]    |
[INFO] [stdout] 89 |     pub fn child(&self, extrinsics: Vec<u64>) -> Self {
[INFO] [stdout]    |                         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_extrinsics`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chain`
[INFO] [stdout]   --> src/c2_blockchain/p4_batched_extrinsics.rs:96:36
[INFO] [stdout]    |
[INFO] [stdout] 96 |     pub fn verify_sub_chain(&self, chain: &[Block]) -> bool {
[INFO] [stdout]    |                                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_chain`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parent`
[INFO] [stdout]    --> src/c2_blockchain/p4_batched_extrinsics.rs:109:48
[INFO] [stdout]     |
[INFO] [stdout] 109 | fn build_invalid_child_block_with_valid_header(parent: &Header) -> Block {
[INFO] [stdout]     |                                                ^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `candidate_chains`
[INFO] [stdout]   --> src/c2_blockchain/p5_fork_choice.rs:34:23
[INFO] [stdout]    |
[INFO] [stdout] 34 |     fn best_chain<'a>(candidate_chains: &[&'a [Header]]) -> &'a [Header] {
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_candidate_chains`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chain_1`
[INFO] [stdout]   --> src/c2_blockchain/p5_fork_choice.rs:43:30
[INFO] [stdout]    |
[INFO] [stdout] 43 |     fn first_chain_is_better(chain_1: &[Header], chain_2: &[Header]) -> bool {
[INFO] [stdout]    |                              ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_chain_1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chain_2`
[INFO] [stdout]   --> src/c2_blockchain/p5_fork_choice.rs:43:50
[INFO] [stdout]    |
[INFO] [stdout] 43 |     fn first_chain_is_better(chain_1: &[Header], chain_2: &[Header]) -> bool {
[INFO] [stdout]    |                                                  ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_chain_2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `candidate_chains`
[INFO] [stdout]   --> src/c2_blockchain/p5_fork_choice.rs:47:23
[INFO] [stdout]    |
[INFO] [stdout] 47 |     fn best_chain<'a>(candidate_chains: &[&'a [Header]]) -> &'a [Header] {
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_candidate_chains`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `block`
[INFO] [stdout]   --> src/c2_blockchain/p5_fork_choice.rs:69:20
[INFO] [stdout]    |
[INFO] [stdout] 69 | fn mine_extra_hard(block: &mut Block, threshold: u64) {
[INFO] [stdout]    |                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_block`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `threshold`
[INFO] [stdout]   --> src/c2_blockchain/p5_fork_choice.rs:69:39
[INFO] [stdout]    |
[INFO] [stdout] 69 | fn mine_extra_hard(block: &mut Block, threshold: u64) {
[INFO] [stdout]    |                                       ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_threshold`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chain_1`
[INFO] [stdout]   --> src/c2_blockchain/p5_fork_choice.rs:74:30
[INFO] [stdout]    |
[INFO] [stdout] 74 |     fn first_chain_is_better(chain_1: &[Header], chain_2: &[Header]) -> bool {
[INFO] [stdout]    |                              ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_chain_1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chain_2`
[INFO] [stdout]   --> src/c2_blockchain/p5_fork_choice.rs:74:50
[INFO] [stdout]    |
[INFO] [stdout] 74 |     fn first_chain_is_better(chain_1: &[Header], chain_2: &[Header]) -> bool {
[INFO] [stdout]    |                                                  ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_chain_2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `candidate_chains`
[INFO] [stdout]   --> src/c2_blockchain/p5_fork_choice.rs:78:23
[INFO] [stdout]    |
[INFO] [stdout] 78 |     fn best_chain<'a>(candidate_chains: &[&'a [Header]]) -> &'a [Header] {
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_candidate_chains`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chain_1`
[INFO] [stdout]    --> src/c2_blockchain/p5_fork_choice.rs:100:30
[INFO] [stdout]     |
[INFO] [stdout] 100 |     fn first_chain_is_better(chain_1: &[Header], chain_2: &[Header]) -> bool {
[INFO] [stdout]     |                              ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_chain_1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chain_2`
[INFO] [stdout]    --> src/c2_blockchain/p5_fork_choice.rs:100:50
[INFO] [stdout]     |
[INFO] [stdout] 100 |     fn first_chain_is_better(chain_1: &[Header], chain_2: &[Header]) -> bool {
[INFO] [stdout]     |                                                  ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_chain_2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `candidate_chains`
[INFO] [stdout]    --> src/c2_blockchain/p5_fork_choice.rs:104:23
[INFO] [stdout]     |
[INFO] [stdout] 104 |     fn best_chain<'a>(candidate_chains: &[&'a [Header]]) -> &'a [Header] {
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_candidate_chains`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `genesis_state_root`
[INFO] [stdout]   --> src/c2_blockchain/p6_rich_state.rs:49:16
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn genesis(genesis_state_root: Hash) -> Self {
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_genesis_state_root`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `extrinsics_root`
[INFO] [stdout]   --> src/c2_blockchain/p6_rich_state.rs:57:21
[INFO] [stdout]    |
[INFO] [stdout] 57 |     fn child(&self, extrinsics_root: Hash, state_root: Hash) -> Self {
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_extrinsics_root`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `state_root`
[INFO] [stdout]   --> src/c2_blockchain/p6_rich_state.rs:57:44
[INFO] [stdout]    |
[INFO] [stdout] 57 |     fn child(&self, extrinsics_root: Hash, state_root: Hash) -> Self {
[INFO] [stdout]    |                                            ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_state_root`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `child`
[INFO] [stdout]   --> src/c2_blockchain/p6_rich_state.rs:62:28
[INFO] [stdout]    |
[INFO] [stdout] 62 |     fn verify_child(&self, child: &Header) -> bool {
[INFO] [stdout]    |                            ^^^^^ help: if this is intentional, prefix it with an underscore: `_child`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chain`
[INFO] [stdout]   --> src/c2_blockchain/p6_rich_state.rs:67:32
[INFO] [stdout]    |
[INFO] [stdout] 67 |     fn verify_sub_chain(&self, chain: &[Header]) -> bool {
[INFO] [stdout]    |                                ^^^^^ help: if this is intentional, prefix it with an underscore: `_chain`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `genesis_state`
[INFO] [stdout]   --> src/c2_blockchain/p6_rich_state.rs:91:20
[INFO] [stdout]    |
[INFO] [stdout] 91 |     pub fn genesis(genesis_state: &State) -> Self {
[INFO] [stdout]    |                    ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_genesis_state`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pre_state`
[INFO] [stdout]   --> src/c2_blockchain/p6_rich_state.rs:96:25
[INFO] [stdout]    |
[INFO] [stdout] 96 |     pub fn child(&self, pre_state: &State, extrinsics: Vec<u64>) -> Self {
[INFO] [stdout]    |                         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_pre_state`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `extrinsics`
[INFO] [stdout]   --> src/c2_blockchain/p6_rich_state.rs:96:44
[INFO] [stdout]    |
[INFO] [stdout] 96 |     pub fn child(&self, pre_state: &State, extrinsics: Vec<u64>) -> Self {
[INFO] [stdout]    |                                            ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_extrinsics`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pre_state`
[INFO] [stdout]    --> src/c2_blockchain/p6_rich_state.rs:105:36
[INFO] [stdout]     |
[INFO] [stdout] 105 |     pub fn verify_sub_chain(&self, pre_state: &State, chain: &[Block]) -> bool {
[INFO] [stdout]     |                                    ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_pre_state`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chain`
[INFO] [stdout]    --> src/c2_blockchain/p6_rich_state.rs:105:55
[INFO] [stdout]     |
[INFO] [stdout] 105 |     pub fn verify_sub_chain(&self, pre_state: &State, chain: &[Block]) -> bool {
[INFO] [stdout]     |                                                       ^^^^^ help: if this is intentional, prefix it with an underscore: `_chain`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parent`
[INFO] [stdout]    --> src/c2_blockchain/p6_rich_state.rs:121:48
[INFO] [stdout]     |
[INFO] [stdout] 121 | fn build_invalid_child_block_with_valid_header(parent: &Header, pre_state: &State) -> Block {
[INFO] [stdout]     |                                                ^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pre_state`
[INFO] [stdout]    --> src/c2_blockchain/p6_rich_state.rs:121:65
[INFO] [stdout]     |
[INFO] [stdout] 121 | fn build_invalid_child_block_with_valid_header(parent: &Header, pre_state: &State) -> Block {
[INFO] [stdout]     |                                                                 ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_pre_state`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `header`
[INFO] [stdout]   --> src/c3_consensus/p1_pow.rs:21:42
[INFO] [stdout]    |
[INFO] [stdout] 21 |     fn validate(&self, _: &Self::Digest, header: &Header<Self::Digest>) -> bool {
[INFO] [stdout]    |                                          ^^^^^^ help: if this is intentional, prefix it with an underscore: `_header`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `partial_header`
[INFO] [stdout]   --> src/c3_consensus/p1_pow.rs:27:38
[INFO] [stdout]    |
[INFO] [stdout] 27 |     fn seal(&self, _: &Self::Digest, partial_header: Header<()>) -> Option<Header<Self::Digest>> {
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_partial_header`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `header`
[INFO] [stdout]   --> src/c3_consensus/p2_dictator.rs:23:42
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn validate(&self, _: &Self::Digest, header: &Header<Self::Digest>) -> bool {
[INFO] [stdout]    |                                          ^^^^^^ help: if this is intentional, prefix it with an underscore: `_header`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `partial_header`
[INFO] [stdout]   --> src/c3_consensus/p2_dictator.rs:28:38
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn seal(&self, _: &Self::Digest, partial_header: Header<()>) -> Option<Header<Self::Digest>> {
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_partial_header`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parent_digest`
[INFO] [stdout]   --> src/c3_consensus/p3_poa.rs:22:24
[INFO] [stdout]    |
[INFO] [stdout] 22 |     fn validate(&self, parent_digest: &Self::Digest, header: &Header<Self::Digest>) -> bool {
[INFO] [stdout]    |                        ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent_digest`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `header`
[INFO] [stdout]   --> src/c3_consensus/p3_poa.rs:22:54
[INFO] [stdout]    |
[INFO] [stdout] 22 |     fn validate(&self, parent_digest: &Self::Digest, header: &Header<Self::Digest>) -> bool {
[INFO] [stdout]    |                                                      ^^^^^^ help: if this is intentional, prefix it with an underscore: `_header`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parent_digest`
[INFO] [stdout]   --> src/c3_consensus/p3_poa.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |         parent_digest: &Self::Digest,
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent_digest`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `partial_header`
[INFO] [stdout]   --> src/c3_consensus/p3_poa.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |         partial_header: Header<()>,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_partial_header`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parent_digest`
[INFO] [stdout]   --> src/c3_consensus/p3_poa.rs:45:24
[INFO] [stdout]    |
[INFO] [stdout] 45 |     fn validate(&self, parent_digest: &Self::Digest, header: &Header<Self::Digest>) -> bool {
[INFO] [stdout]    |                        ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent_digest`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `header`
[INFO] [stdout]   --> src/c3_consensus/p3_poa.rs:45:54
[INFO] [stdout]    |
[INFO] [stdout] 45 |     fn validate(&self, parent_digest: &Self::Digest, header: &Header<Self::Digest>) -> bool {
[INFO] [stdout]    |                                                      ^^^^^^ help: if this is intentional, prefix it with an underscore: `_header`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parent_digest`
[INFO] [stdout]   --> src/c3_consensus/p3_poa.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |         parent_digest: &Self::Digest,
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent_digest`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `partial_header`
[INFO] [stdout]   --> src/c3_consensus/p3_poa.rs:52:9
[INFO] [stdout]    |
[INFO] [stdout] 52 |         partial_header: Header<()>,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_partial_header`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parent_digest`
[INFO] [stdout]   --> src/c3_consensus/p3_poa.rs:82:24
[INFO] [stdout]    |
[INFO] [stdout] 82 |     fn validate(&self, parent_digest: &Self::Digest, header: &Header<Self::Digest>) -> bool {
[INFO] [stdout]    |                        ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent_digest`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `header`
[INFO] [stdout]   --> src/c3_consensus/p3_poa.rs:82:54
[INFO] [stdout]    |
[INFO] [stdout] 82 |     fn validate(&self, parent_digest: &Self::Digest, header: &Header<Self::Digest>) -> bool {
[INFO] [stdout]    |                                                      ^^^^^^ help: if this is intentional, prefix it with an underscore: `_header`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parent_digest`
[INFO] [stdout]   --> src/c3_consensus/p3_poa.rs:88:9
[INFO] [stdout]    |
[INFO] [stdout] 88 |         parent_digest: &Self::Digest,
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent_digest`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `partial_header`
[INFO] [stdout]   --> src/c3_consensus/p3_poa.rs:89:9
[INFO] [stdout]    |
[INFO] [stdout] 89 |         partial_header: Header<()>,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_partial_header`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parent_digest`
[INFO] [stdout]   --> src/c3_consensus/p4_even_only.rs:19:24
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn validate(&self, parent_digest: &Self::Digest, header: &Header<Self::Digest>) -> bool {
[INFO] [stdout]    |                        ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent_digest`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `header`
[INFO] [stdout]   --> src/c3_consensus/p4_even_only.rs:19:54
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn validate(&self, parent_digest: &Self::Digest, header: &Header<Self::Digest>) -> bool {
[INFO] [stdout]    |                                                      ^^^^^^ help: if this is intentional, prefix it with an underscore: `_header`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parent_digest`
[INFO] [stdout]   --> src/c3_consensus/p4_even_only.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |         parent_digest: &Self::Digest,
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent_digest`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `partial_header`
[INFO] [stdout]   --> src/c3_consensus/p4_even_only.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |         partial_header: Header<()>,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_partial_header`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parent_digest`
[INFO] [stdout]   --> src/c3_consensus/p5_interleave.rs:52:24
[INFO] [stdout]    |
[INFO] [stdout] 52 |     fn validate(&self, parent_digest: &Self::Digest, header: &Header<Self::Digest>) -> bool {
[INFO] [stdout]    |                        ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent_digest`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `header`
[INFO] [stdout]   --> src/c3_consensus/p5_interleave.rs:52:54
[INFO] [stdout]    |
[INFO] [stdout] 52 |     fn validate(&self, parent_digest: &Self::Digest, header: &Header<Self::Digest>) -> bool {
[INFO] [stdout]    |                                                      ^^^^^^ help: if this is intentional, prefix it with an underscore: `_header`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parent_digest`
[INFO] [stdout]   --> src/c3_consensus/p5_interleave.rs:58:9
[INFO] [stdout]    |
[INFO] [stdout] 58 |         parent_digest: &Self::Digest,
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent_digest`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `partial_header`
[INFO] [stdout]   --> src/c3_consensus/p5_interleave.rs:59:9
[INFO] [stdout]    |
[INFO] [stdout] 59 |         partial_header: Header<()>,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_partial_header`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parent_digest`
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:31:24
[INFO] [stdout]    |
[INFO] [stdout] 31 |     fn validate(&self, parent_digest: &Self::Digest, header: &Header<Self::Digest>) -> bool {
[INFO] [stdout]    |                        ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent_digest`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `header`
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:31:54
[INFO] [stdout]    |
[INFO] [stdout] 31 |     fn validate(&self, parent_digest: &Self::Digest, header: &Header<Self::Digest>) -> bool {
[INFO] [stdout]    |                                                      ^^^^^^ help: if this is intentional, prefix it with an underscore: `_header`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parent_digest`
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |         parent_digest: &Self::Digest,
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent_digest`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `partial_header`
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |         partial_header: Header<()>,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_partial_header`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fork_height`
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:47:5
[INFO] [stdout]    |
[INFO] [stdout] 47 |     fork_height: u64,
[INFO] [stdout]    |     ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_fork_height`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `initial_authorities`
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:48:5
[INFO] [stdout]    |
[INFO] [stdout] 48 |     initial_authorities: Vec<ConsensusAuthority>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_initial_authorities`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `final_authorities`
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:49:5
[INFO] [stdout]    |
[INFO] [stdout] 49 |     final_authorities: Vec<ConsensusAuthority>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_final_authorities`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fork_height`
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:56:5
[INFO] [stdout]    |
[INFO] [stdout] 56 |     fork_height: u64,
[INFO] [stdout]    |     ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_fork_height`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `initial_difficulty`
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:57:5
[INFO] [stdout]    |
[INFO] [stdout] 57 |     initial_difficulty: u64,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_initial_difficulty`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `final_difficulty`
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:58:5
[INFO] [stdout]    |
[INFO] [stdout] 58 |     final_difficulty: u64,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_final_difficulty`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fork_height`
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:70:49
[INFO] [stdout]    |
[INFO] [stdout] 70 | fn even_after_given_height<Original: Consensus>(fork_height: u64) -> impl Consensus {
[INFO] [stdout]    |                                                 ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_fork_height`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fork_height`
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:81:5
[INFO] [stdout]    |
[INFO] [stdout] 81 |     fork_height: u64,
[INFO] [stdout]    |     ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_fork_height`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `difficulty`
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:82:5
[INFO] [stdout]    |
[INFO] [stdout] 82 |     difficulty: u64,
[INFO] [stdout]    |     ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_difficulty`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `authorities`
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:83:5
[INFO] [stdout]    |
[INFO] [stdout] 83 |     authorities: Vec<ConsensusAuthority>,
[INFO] [stdout]    |     ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_authorities`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parent_digest`
[INFO] [stdout]   --> src/c3_consensus/mod.rs:76:9
[INFO] [stdout]    |
[INFO] [stdout] 76 |         parent_digest: &Self::Digest,
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent_digest`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chain`
[INFO] [stdout]   --> src/c3_consensus/mod.rs:77:9
[INFO] [stdout]    |
[INFO] [stdout] 77 |         chain: &[Header<Self::Digest>],
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_chain`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `partial_header`
[INFO] [stdout]    --> src/c3_consensus/mod.rs:101:38
[INFO] [stdout]     |
[INFO] [stdout] 101 |     fn seal(&self, _: &Self::Digest, partial_header: Header<()>) -> Option<Header<Self::Digest>> {
[INFO] [stdout]     |                                      ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_partial_header`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `genesis_state_root`
[INFO] [stdout]   --> src/c4_client/p1_data_structure.rs:26:16
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn genesis(genesis_state_root: Hash) -> Self {
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_genesis_state_root`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `state_root`
[INFO] [stdout]   --> src/c4_client/p1_data_structure.rs:31:21
[INFO] [stdout]    |
[INFO] [stdout] 31 |     fn child(&self, state_root: Hash, extrinsics_root: Hash) -> Self {
[INFO] [stdout]    |                     ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_state_root`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `extrinsics_root`
[INFO] [stdout]   --> src/c4_client/p1_data_structure.rs:31:39
[INFO] [stdout]    |
[INFO] [stdout] 31 |     fn child(&self, state_root: Hash, extrinsics_root: Hash) -> Self {
[INFO] [stdout]    |                                       ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_extrinsics_root`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `child`
[INFO] [stdout]   --> src/c4_client/p1_data_structure.rs:36:28
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn verify_child(&self, child: &Self) -> bool {
[INFO] [stdout]    |                            ^^^^^ help: if this is intentional, prefix it with an underscore: `_child`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chain`
[INFO] [stdout]   --> src/c4_client/p1_data_structure.rs:41:32
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn verify_sub_chain(&self, chain: &[Self]) -> bool {
[INFO] [stdout]    |                                ^^^^^ help: if this is intentional, prefix it with an underscore: `_chain`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `genesis_state`
[INFO] [stdout]   --> src/c4_client/p1_data_structure.rs:53:20
[INFO] [stdout]    |
[INFO] [stdout] 53 |     pub fn genesis(genesis_state: &SM::State) -> Self {
[INFO] [stdout]    |                    ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_genesis_state`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pre_state`
[INFO] [stdout]   --> src/c4_client/p1_data_structure.rs:58:25
[INFO] [stdout]    |
[INFO] [stdout] 58 |     pub fn child(&self, pre_state: &SM::State, extrinsics: Vec<u8>) -> Self {
[INFO] [stdout]    |                         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_pre_state`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `extrinsics`
[INFO] [stdout]   --> src/c4_client/p1_data_structure.rs:58:48
[INFO] [stdout]    |
[INFO] [stdout] 58 |     pub fn child(&self, pre_state: &SM::State, extrinsics: Vec<u8>) -> Self {
[INFO] [stdout]    |                                                ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_extrinsics`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pre_state`
[INFO] [stdout]   --> src/c4_client/p1_data_structure.rs:63:36
[INFO] [stdout]    |
[INFO] [stdout] 63 |     pub fn verify_sub_chain(&self, pre_state: &SM::State, chain: &[Self]) -> bool {
[INFO] [stdout]    |                                    ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_pre_state`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chain`
[INFO] [stdout]   --> src/c4_client/p1_data_structure.rs:63:59
[INFO] [stdout]    |
[INFO] [stdout] 63 |     pub fn verify_sub_chain(&self, pre_state: &SM::State, chain: &[Self]) -> bool {
[INFO] [stdout]    |                                                           ^^^^^ help: if this is intentional, prefix it with an underscore: `_chain`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/c4_client/p1_data_structure.rs:71:5
[INFO] [stdout]    |
[INFO] [stdout] 71 |     n: u64,
[INFO] [stdout]    |     ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `genesis_state`
[INFO] [stdout]   --> src/c4_client/p1_data_structure.rs:72:5
[INFO] [stdout]    |
[INFO] [stdout] 72 |     genesis_state: &SM::State,
[INFO] [stdout]    |     ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_genesis_state`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `genesis_state`
[INFO] [stdout]   --> src/c4_client/p1_data_structure.rs:84:12
[INFO] [stdout]    |
[INFO] [stdout] 84 |     fn new(genesis_state: SM::State) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_genesis_state`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `block_hash`
[INFO] [stdout]   --> src/c4_client/p2_importing_blocks.rs:41:25
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn get_block(&self, block_hash: u64) -> Option<Block<C, SM>> {
[INFO] [stdout]    |                         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_block_hash`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `block_hash`
[INFO] [stdout]   --> src/c4_client/p2_importing_blocks.rs:45:25
[INFO] [stdout]    |
[INFO] [stdout] 45 |     fn get_state(&self, block_hash: u64) -> Option<<SM as StateMachine>::State> {
[INFO] [stdout]    |                         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_block_hash`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `block_hash`
[INFO] [stdout]   --> src/c4_client/p2_importing_blocks.rs:49:23
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn is_leaf(&self, block_hash: u64) -> Option<bool> {
[INFO] [stdout]    |                       ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_block_hash`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `header`
[INFO] [stdout]   --> src/c4_client/p3_fork_choice.rs:32:26
[INFO] [stdout]    |
[INFO] [stdout] 32 |     fn best_block(&self, header: Header<C::Digest>) -> Option<u64> {
[INFO] [stdout]    |                          ^^^^^^ help: if this is intentional, prefix it with an underscore: `_header`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `header`
[INFO] [stdout]   --> src/c4_client/p3_fork_choice.rs:36:31
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn import_hook(&mut self, header: Header<C::Digest>) {
[INFO] [stdout]    |                               ^^^^^^ help: if this is intentional, prefix it with an underscore: `_header`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `header`
[INFO] [stdout]   --> src/c4_client/p3_fork_choice.rs:49:26
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn best_block(&self, header: Header<u64>) -> Option<u64> {
[INFO] [stdout]    |                          ^^^^^^ help: if this is intentional, prefix it with an underscore: `_header`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `header`
[INFO] [stdout]   --> src/c4_client/p3_fork_choice.rs:53:31
[INFO] [stdout]    |
[INFO] [stdout] 53 |     fn import_hook(&mut self, header: Header<u64>) {
[INFO] [stdout]    |                               ^^^^^^ help: if this is intentional, prefix it with an underscore: `_header`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `header`
[INFO] [stdout]   --> src/c4_client/p3_fork_choice.rs:66:26
[INFO] [stdout]    |
[INFO] [stdout] 66 |     fn best_block(&self, header: Header<ConsensusAuthority>) -> Option<u64> {
[INFO] [stdout]    |                          ^^^^^^ help: if this is intentional, prefix it with an underscore: `_header`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `header`
[INFO] [stdout]   --> src/c4_client/p3_fork_choice.rs:70:31
[INFO] [stdout]    |
[INFO] [stdout] 70 |     fn import_hook(&mut self, header: Header<ConsensusAuthority>) {
[INFO] [stdout]    |                               ^^^^^^ help: if this is intentional, prefix it with an underscore: `_header`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `header`
[INFO] [stdout]   --> src/c4_client/p3_fork_choice.rs:83:26
[INFO] [stdout]    |
[INFO] [stdout] 83 |     fn best_block(&self, header: Header<u64>) -> Option<u64> {
[INFO] [stdout]    |                          ^^^^^^ help: if this is intentional, prefix it with an underscore: `_header`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `header`
[INFO] [stdout]   --> src/c4_client/p3_fork_choice.rs:87:31
[INFO] [stdout]    |
[INFO] [stdout] 87 |     fn import_hook(&mut self, header: Header<u64>) {
[INFO] [stdout]    |                               ^^^^^^ help: if this is intentional, prefix it with an underscore: `_header`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/c4_client/p4_transaction_pool.rs:48:42
[INFO] [stdout]    |
[INFO] [stdout] 48 |     pub fn submit_transaction(&mut self, t: SM::Transition) {
[INFO] [stdout]    |                                          ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/c4_client/p4_transaction_pool.rs:59:33
[INFO] [stdout]    |
[INFO] [stdout] 59 |     pub fn pool_contains(&self, t: SM::Transition) -> bool {
[INFO] [stdout]    |                                 ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/c4_client/p4_transaction_pool.rs:68:30
[INFO] [stdout]    |
[INFO] [stdout] 68 |     fn try_insert(&mut self, t: <SM as StateMachine>::Transition) -> bool {
[INFO] [stdout]    |                              ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/c4_client/p4_transaction_pool.rs:72:26
[INFO] [stdout]    |
[INFO] [stdout] 72 |     fn remove(&mut self, t: <SM as StateMachine>::Transition) {
[INFO] [stdout]    |                          ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/c4_client/p4_transaction_pool.rs:80:24
[INFO] [stdout]    |
[INFO] [stdout] 80 |     fn contains(&self, t: <SM as StateMachine>::Transition) -> bool {
[INFO] [stdout]    |                        ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/c4_client/p4_transaction_pool.rs:110:30
[INFO] [stdout]     |
[INFO] [stdout] 110 |     fn try_insert(&mut self, t: <SM as StateMachine>::Transition) -> bool {
[INFO] [stdout]     |                              ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/c4_client/p4_transaction_pool.rs:114:26
[INFO] [stdout]     |
[INFO] [stdout] 114 |     fn remove(&mut self, t: <SM as StateMachine>::Transition) {
[INFO] [stdout]     |                          ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/c4_client/p4_transaction_pool.rs:122:24
[INFO] [stdout]     |
[INFO] [stdout] 122 |     fn contains(&self, t: <SM as StateMachine>::Transition) -> bool {
[INFO] [stdout]     |                        ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/c4_client/p4_transaction_pool.rs:145:30
[INFO] [stdout]     |
[INFO] [stdout] 145 |     fn try_insert(&mut self, t: <SM as StateMachine>::Transition) -> bool {
[INFO] [stdout]     |                              ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/c4_client/p4_transaction_pool.rs:149:26
[INFO] [stdout]     |
[INFO] [stdout] 149 |     fn remove(&mut self, t: <SM as StateMachine>::Transition) {
[INFO] [stdout]     |                          ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/c4_client/p4_transaction_pool.rs:157:24
[INFO] [stdout]     |
[INFO] [stdout] 157 |     fn contains(&self, t: <SM as StateMachine>::Transition) -> bool {
[INFO] [stdout]     |                        ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `transactions`
[INFO] [stdout]   --> src/c4_client/p5_authoring_blocks.rs:13:54
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn author_and_import_manual_block(&mut self, transactions: Vec<SM::Transition>, parent_hash: u64) {
[INFO] [stdout]    |                                                      ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_transactions`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parent_hash`
[INFO] [stdout]   --> src/c4_client/p5_authoring_blocks.rs:13:89
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn author_and_import_manual_block(&mut self, transactions: Vec<SM::Transition>, parent_hash: u64) {
[INFO] [stdout]    |                                                                                         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent_hash`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `block_hash`
[INFO] [stdout]   --> src/c4_client/p6_finality.rs:13:47
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn manually_finalize_block(&mut self, block_hash: u64) -> bool {
[INFO] [stdout]    |                                               ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_block_hash`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `human_name` is never used
[INFO] [stdout]   --> src/c1_state_machine/mod.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub trait StateMachine {
[INFO] [stdout]    |           ------------ associated function in this trait
[INFO] [stdout] ...
[INFO] [stdout] 25 |     fn human_name() -> String {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/c1_state_machine/p3_atm.rs:21:15
[INFO] [stdout]    |
[INFO] [stdout] 21 |     SwipeCard(u64),
[INFO] [stdout]    |     --------- ^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 21 -     SwipeCard(u64),
[INFO] [stdout] 21 +     SwipeCard(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/c1_state_machine/p3_atm.rs:23:14
[INFO] [stdout]    |
[INFO] [stdout] 23 |     PressKey(Key),
[INFO] [stdout]    |     -------- ^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 23 -     PressKey(Key),
[INFO] [stdout] 23 +     PressKey(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `minter` and `amount` are never read
[INFO] [stdout]   --> src/c1_state_machine/p4_accounted_currency.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 29 |     Mint { minter: User, amount: u64 },
[INFO] [stdout]    |     ----   ^^^^^^        ^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     fields in this variant
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `burner` and `amount` are never read
[INFO] [stdout]   --> src/c1_state_machine/p4_accounted_currency.rs:33:12
[INFO] [stdout]    |
[INFO] [stdout] 33 |     Burn { burner: User, amount: u64 },
[INFO] [stdout]    |     ----   ^^^^^^        ^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     fields in this variant
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `sender`, `receiver`, and `amount` are never read
[INFO] [stdout]   --> src/c1_state_machine/p4_accounted_currency.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |     Transfer {
[INFO] [stdout]    |     -------- fields in this variant
[INFO] [stdout] 36 |         sender: User,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 37 |         receiver: User,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 38 |         amount: u64,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `next_serial` is never used
[INFO] [stdout]   --> src/c1_state_machine/p5_digital_cash.rs:45:12
[INFO] [stdout]    |
[INFO] [stdout] 33 | impl State {
[INFO] [stdout]    | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 45 |     pub fn next_serial(&self) -> u64 {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `minter` and `amount` are never read
[INFO] [stdout]   --> src/c1_state_machine/p5_digital_cash.rs:79:12
[INFO] [stdout]    |
[INFO] [stdout] 79 |     Mint { minter: User, amount: u64 },
[INFO] [stdout]    |     ----   ^^^^^^        ^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     fields in this variant
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `spends` and `receives` are never read
[INFO] [stdout]   --> src/c1_state_machine/p5_digital_cash.rs:86:9
[INFO] [stdout]    |
[INFO] [stdout] 85 |     Transfer {
[INFO] [stdout]    |     -------- fields in this variant
[INFO] [stdout] 86 |         spends: Vec<Bill>,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 87 |         receives: Vec<Bill>,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `State` is never constructed
[INFO] [stdout]   --> src/c1_state_machine/p6_open_ended.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub struct State {}
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Transition` is never used
[INFO] [stdout]   --> src/c1_state_machine/p6_open_ended.rs:27:10
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub enum Transition {}
[INFO] [stdout]    |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `build_valid_chain` is never used
[INFO] [stdout]   --> src/c2_blockchain/p2_extrinsic_state.rs:58:4
[INFO] [stdout]    |
[INFO] [stdout] 58 | fn build_valid_chain(n: u64) -> Vec<Header> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `FORK_HEIGHT` is never used
[INFO] [stdout]   --> src/c2_blockchain/p3_consensus.rs:20:7
[INFO] [stdout]    |
[INFO] [stdout] 20 | const FORK_HEIGHT: u64 = 2;
[INFO] [stdout]    |       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `verify_sub_chain` is never used
[INFO] [stdout]   --> src/c2_blockchain/p4_batched_extrinsics.rs:64:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | impl Header {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 64 |     fn verify_sub_chain(&self, chain: &[Header]) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `verify_sub_chain` is never used
[INFO] [stdout]   --> src/c2_blockchain/p6_rich_state.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 47 | impl Header {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 67 |     fn verify_sub_chain(&self, chain: &[Header]) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Hash` is never used
[INFO] [stdout]   --> src/c3_consensus/mod.rs:16:6
[INFO] [stdout]    |
[INFO] [stdout] 16 | type Hash = u64;
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Header` is never constructed
[INFO] [stdout]   --> src/c3_consensus/mod.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub struct Header<Digest> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Consensus` is never used
[INFO] [stdout]   --> src/c3_consensus/mod.rs:38:11
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub trait Consensus {
[INFO] [stdout]    |           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Alice`, `Bob`, and `Charlie` are never constructed
[INFO] [stdout]    --> src/c3_consensus/mod.rs:110:5
[INFO] [stdout]     |
[INFO] [stdout] 109 | pub enum ConsensusAuthority {
[INFO] [stdout]     |          ------------------ variants in this enum
[INFO] [stdout] 110 |     Alice,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout] 111 |     Bob,
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 112 |     Charlie,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ConsensusAuthority` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Pow` is never constructed
[INFO] [stdout]   --> src/c3_consensus/p1_pow.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct Pow {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `moderate_difficulty_pow` is never used
[INFO] [stdout]   --> src/c3_consensus/p1_pow.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub fn moderate_difficulty_pow() -> Pow {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `trivial_always_valid_pow` is never used
[INFO] [stdout]   --> src/c3_consensus/p1_pow.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub fn trivial_always_valid_pow() -> Pow {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DictatorConsensus` is never constructed
[INFO] [stdout]   --> src/c3_consensus/p2_dictator.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct DictatorConsensus {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SimplePoa` is never constructed
[INFO] [stdout]   --> src/c3_consensus/p3_poa.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct SimplePoa {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PoaRoundRobinByHeight` is never constructed
[INFO] [stdout]   --> src/c3_consensus/p3_poa.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | struct PoaRoundRobinByHeight {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PoaRoundRobinBySlot` is never constructed
[INFO] [stdout]   --> src/c3_consensus/p3_poa.rs:66:8
[INFO] [stdout]    |
[INFO] [stdout] 66 | struct PoaRoundRobinBySlot {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SlotDigest` is never constructed
[INFO] [stdout]   --> src/c3_consensus/p3_poa.rs:74:8
[INFO] [stdout]    |
[INFO] [stdout] 74 | struct SlotDigest {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `EvenOnly` is never constructed
[INFO] [stdout]   --> src/c3_consensus/p4_even_only.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct EvenOnly<Inner: Consensus> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `almost_valid_but_not_all_even` is never used
[INFO] [stdout]   --> src/c3_consensus/p4_even_only.rs:35:4
[INFO] [stdout]    |
[INFO] [stdout] 35 | fn almost_valid_but_not_all_even() -> Vec<Header<u64>> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `AlternatingPowPoa` is never constructed
[INFO] [stdout]   --> src/c3_consensus/p5_interleave.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct AlternatingPowPoa;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Pow` and `Poa` are never constructed
[INFO] [stdout]   --> src/c3_consensus/p5_interleave.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | enum PowOrPoaDigest {
[INFO] [stdout]    |      -------------- variants in this enum
[INFO] [stdout] 17 |     Pow(u64),
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 18 |     Poa(ConsensusAuthority),
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `PowOrPoaDigest` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Forked` is never constructed
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct Forked<D, Before, After> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `change_authorities` is never used
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:46:4
[INFO] [stdout]    |
[INFO] [stdout] 46 | fn change_authorities(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `change_difficulty` is never used
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:55:4
[INFO] [stdout]    |
[INFO] [stdout] 55 | fn change_difficulty(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `even_after_given_height` is never used
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:70:4
[INFO] [stdout]    |
[INFO] [stdout] 70 | fn even_after_given_height<Original: Consensus>(fork_height: u64) -> impl Consensus {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `pow_to_poa` is never used
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:80:4
[INFO] [stdout]    |
[INFO] [stdout] 80 | fn pow_to_poa(
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Hash` is never used
[INFO] [stdout]   --> src/c4_client/mod.rs:29:6
[INFO] [stdout]    |
[INFO] [stdout] 29 | type Hash = u64;
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FullClient` is never constructed
[INFO] [stdout]   --> src/c4_client/mod.rs:52:12
[INFO] [stdout]    |
[INFO] [stdout] 52 | pub struct FullClient<C, SM, FC, P>
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Hash` is never used
[INFO] [stdout]   --> src/c4_client/p1_data_structure.rs:22:6
[INFO] [stdout]    |
[INFO] [stdout] 22 | type Hash = u64;
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `genesis`, `child`, `verify_child`, and `verify_sub_chain` are never used
[INFO] [stdout]   --> src/c4_client/p1_data_structure.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl<Digest> Header<Digest> {
[INFO] [stdout]    | --------------------------- associated items in this implementation
[INFO] [stdout] 25 |     /// Returns a new valid genesis header.
[INFO] [stdout] 26 |     fn genesis(genesis_state_root: Hash) -> Self {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 31 |     fn child(&self, state_root: Hash, extrinsics_root: Hash) -> Self {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 36 |     fn verify_child(&self, child: &Self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 41 |     fn verify_sub_chain(&self, chain: &[Self]) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Block` is never constructed
[INFO] [stdout]   --> src/c4_client/p1_data_structure.rs:46:12
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub struct Block<C: Consensus, SM: StateMachine> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `genesis`, `child`, and `verify_sub_chain` are never used
[INFO] [stdout]   --> src/c4_client/p1_data_structure.rs:53:12
[INFO] [stdout]    |
[INFO] [stdout] 51 | impl<C: Consensus, SM: StateMachine> Block<C, SM> {
[INFO] [stdout]    | ------------------------------------------------- associated items in this implementation
[INFO] [stdout] 52 |     /// Returns a new valid genesis block. By convention this block has no extrinsics.
[INFO] [stdout] 53 |     pub fn genesis(genesis_state: &SM::State) -> Self {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 58 |     pub fn child(&self, pre_state: &SM::State, extrinsics: Vec<u8>) -> Self {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 63 |     pub fn verify_sub_chain(&self, pre_state: &SM::State, chain: &[Self]) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_empty_chain` is never used
[INFO] [stdout]   --> src/c4_client/p1_data_structure.rs:70:4
[INFO] [stdout]    |
[INFO] [stdout] 70 | fn create_empty_chain<C: Consensus, SM: StateMachine>(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/c4_client/p1_data_structure.rs:84:8
[INFO] [stdout]    |
[INFO] [stdout] 80 | / impl<C, SM, FC, P> FullClient<C, SM, FC, P>
[INFO] [stdout] 81 | | where
[INFO] [stdout] 82 | |     SM: StateMachine,
[INFO] [stdout]    | |_____________________- associated function in this implementation
[INFO] [stdout] 83 |   {
[INFO] [stdout] 84 |       fn new(genesis_state: SM::State) -> Self {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `ImportBlock` is never used
[INFO] [stdout]   --> src/c4_client/p2_importing_blocks.rs:10:11
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub trait ImportBlock<C: Consensus, SM: StateMachine> {
[INFO] [stdout]    |           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `ForkChoice` is never used
[INFO] [stdout]   --> src/c4_client/p3_fork_choice.rs:18:11
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub trait ForkChoice<C: Consensus> {
[INFO] [stdout]    |           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `LongestChain` is never constructed
[INFO] [stdout]   --> src/c4_client/p3_fork_choice.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub struct LongestChain {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `HeaviestChain` is never constructed
[INFO] [stdout]   --> src/c4_client/p3_fork_choice.rs:44:12
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub struct HeaviestChain {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MostAliceSigs` is never constructed
[INFO] [stdout]   --> src/c4_client/p3_fork_choice.rs:61:12
[INFO] [stdout]    |
[INFO] [stdout] 61 | pub struct MostAliceSigs {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Ghost` is never constructed
[INFO] [stdout]   --> src/c4_client/p3_fork_choice.rs:78:12
[INFO] [stdout]    |
[INFO] [stdout] 78 | pub struct Ghost {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `best_block` is never used
[INFO] [stdout]   --> src/c4_client/p3_fork_choice.rs:97:8
[INFO] [stdout]    |
[INFO] [stdout] 95 | impl<C, SM, FC, P> FullClient<C, SM, FC, P> {
[INFO] [stdout]    | ------------------------------------------- method in this implementation
[INFO] [stdout] 96 |     /// Return the hash of the best block currently known to the client
[INFO] [stdout] 97 |     fn best_block(&self) -> u64 {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `TransactionPool` is never used
[INFO] [stdout]   --> src/c4_client/p4_transaction_pool.rs:17:11
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub trait TransactionPool<SM: StateMachine> {
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `submit_transaction`, `pool_size`, and `pool_contains` are never used
[INFO] [stdout]   --> src/c4_client/p4_transaction_pool.rs:48:12
[INFO] [stdout]    |
[INFO] [stdout] 42 | / impl<C, SM, FC, P> FullClient<C, SM, FC, P>           
[INFO] [stdout] 43 | |     where
[INFO] [stdout] 44 | |     SM: StateMachine,
[INFO] [stdout]    | |_____________________- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 48 |       pub fn submit_transaction(&mut self, t: SM::Transition) {
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 54 |       pub fn pool_size(&self) -> usize {
[INFO] [stdout]    |              ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 59 |       pub fn pool_contains(&self, t: SM::Transition) -> bool {
[INFO] [stdout]    |              ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SimplePool` is never constructed
[INFO] [stdout]   --> src/c4_client/p4_transaction_pool.rs:65:12
[INFO] [stdout]    |
[INFO] [stdout] 65 | pub struct SimplePool<SM: StateMachine>(VecDeque<SM::Transition>);
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PriorityPool` is never constructed
[INFO] [stdout]   --> src/c4_client/p4_transaction_pool.rs:96:12
[INFO] [stdout]    |
[INFO] [stdout] 96 | pub struct PriorityPool<T, P: Fn(T) -> u64> {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CensoringPool` is never constructed
[INFO] [stdout]    --> src/c4_client/p4_transaction_pool.rs:134:12
[INFO] [stdout]     |
[INFO] [stdout] 134 | pub struct CensoringPool<T, P: Fn(T) -> bool> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `author_and_import_manual_block` and `author_and_import_automatic_block` are never used
[INFO] [stdout]   --> src/c4_client/p5_authoring_blocks.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout]  7 | / impl<C, SM, FC, P> FullClient<C, SM, FC, P>
[INFO] [stdout]  8 | |     where
[INFO] [stdout]  9 | |     SM: StateMachine,
[INFO] [stdout]    | |_____________________- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 13 |       pub fn author_and_import_manual_block(&mut self, transactions: Vec<SM::Transition>, parent_hash: u64) {
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |       pub fn author_and_import_automatic_block(&self) {
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `manually_finalize_block` is never used
[INFO] [stdout]   --> src/c4_client/p6_finality.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl<C, SM, FC, P> FullClient<C, SM, FC, P> {
[INFO] [stdout]    | ------------------------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 13 |     pub fn manually_finalize_block(&mut self, block_hash: u64) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `diy-blockchain` (lib test) due to 8 previous errors; 191 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "33cc845811fb990fe480acb526de373fe12c6022a2dd3838078d5fbda1387e47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "33cc845811fb990fe480acb526de373fe12c6022a2dd3838078d5fbda1387e47", kill_on_drop: false }`
[INFO] [stdout] 33cc845811fb990fe480acb526de373fe12c6022a2dd3838078d5fbda1387e47
