[INFO] cloning repository https://github.com/thrasamacus/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/thrasamacus/blockchain-from-scratch" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthrasamacus%2Fblockchain-from-scratch", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthrasamacus%2Fblockchain-from-scratch'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8ece3aef9f5d4d2314a20dfa86809dcb067aa22b
[INFO] checking thrasamacus/blockchain-from-scratch against try#1779a8680dcd39c56ed600627cf6742ef07ed78c for pr-149045
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthrasamacus%2Fblockchain-from-scratch" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/thrasamacus/blockchain-from-scratch
[INFO] finished tweaking git repo https://github.com/thrasamacus/blockchain-from-scratch
[INFO] tweaked toml for git repo https://github.com/thrasamacus/blockchain-from-scratch written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/thrasamacus/blockchain-from-scratch on toolchain 1779a8680dcd39c56ed600627cf6742ef07ed78c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1779a8680dcd39c56ed600627cf6742ef07ed78c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/thrasamacus/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" "+1779a8680dcd39c56ed600627cf6742ef07ed78c" "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 thrasamacus/blockchain-from-scratch against try#1779a8680dcd39c56ed600627cf6742ef07ed78c for pr-149045
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthrasamacus%2Fblockchain-from-scratch" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/thrasamacus/blockchain-from-scratch
[INFO] finished tweaking git repo https://github.com/thrasamacus/blockchain-from-scratch
[INFO] tweaked toml for git repo https://github.com/thrasamacus/blockchain-from-scratch written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/thrasamacus/blockchain-from-scratch on toolchain 1779a8680dcd39c56ed600627cf6742ef07ed78c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1779a8680dcd39c56ed600627cf6742ef07ed78c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/thrasamacus/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" "+1779a8680dcd39c56ed600627cf6742ef07ed78c" "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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1779a8680dcd39c56ed600627cf6742ef07ed78c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a5f136016789b98bd5c9a40aeedd19450c6f2da8803b515875cb1f2d868acd4f
[INFO] running `Command { std: "docker" "start" "-a" "a5f136016789b98bd5c9a40aeedd19450c6f2da8803b515875cb1f2d868acd4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a5f136016789b98bd5c9a40aeedd19450c6f2da8803b515875cb1f2d868acd4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5f136016789b98bd5c9a40aeedd19450c6f2da8803b515875cb1f2d868acd4f", kill_on_drop: false }`
[INFO] [stdout] a5f136016789b98bd5c9a40aeedd19450c6f2da8803b515875cb1f2d868acd4f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1779a8680dcd39c56ed600627cf6742ef07ed78c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 44cf22c993a58784d2a9993578dca9fce80e3c27956cdb0af45123a2eace61b6
[INFO] running `Command { std: "docker" "start" "-a" "44cf22c993a58784d2a9993578dca9fce80e3c27956cdb0af45123a2eace61b6", kill_on_drop: false }`
[INFO] [stderr]     Checking blockchain-from-scratch 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:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | 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:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | 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:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::hash;
[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: `crate::hash`
[INFO] [stdout]   --> src/c2_blockchain/p6_rich_state.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use crate::hash;
[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] error: this function depends on never type fallback being `()`
[INFO] [stdout]   --> src/c3_consensus/p1_pow.rs:35:1
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub fn moderate_difficulty_pow() -> impl Consensus {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: Consensus` will fail
[INFO] [stdout]   --> src/c3_consensus/p1_pow.rs:35:37
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub fn moderate_difficulty_pow() -> impl Consensus {
[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]    = 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:47:1
[INFO] [stdout]    |
[INFO] [stdout] 47 | / fn change_authorities(
[INFO] [stdout] 48 | |     fork_height: u64,
[INFO] [stdout] 49 | |     initial_authorities: Vec<ConsensusAuthority>,
[INFO] [stdout] 50 | |     final_authorities: Vec<ConsensusAuthority>,
[INFO] [stdout] 51 | | ) -> impl Consensus {
[INFO] [stdout]    | |___________________^
[INFO] [stdout]    |
[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:51:6
[INFO] [stdout]    |
[INFO] [stdout] 51 | ) -> impl Consensus {
[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] 
[INFO] [stdout] 
[INFO] [stdout] error: this function depends on never type fallback being `()`
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:56:1
[INFO] [stdout]    |
[INFO] [stdout] 56 | / fn change_difficulty(
[INFO] [stdout] 57 | |     fork_height: u64,
[INFO] [stdout] 58 | |     initial_difficulty: u64,
[INFO] [stdout] 59 | |     final_difficulty: u64,
[INFO] [stdout] 60 | | ) -> impl Consensus {
[INFO] [stdout]    | |___________________^
[INFO] [stdout]    |
[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:60:6
[INFO] [stdout]    |
[INFO] [stdout] 60 | ) -> impl Consensus {
[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] 
[INFO] [stdout] 
[INFO] [stdout] error: this function depends on never type fallback being `()`
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:72:1
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn even_after_given_height<Original: Consensus>(fork_height: u64) -> impl Consensus {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[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:72:70
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn even_after_given_height<Original: Consensus>(fork_height: u64) -> impl Consensus {
[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] 
[INFO] [stdout] 
[INFO] [stdout] error: this function depends on never type fallback being `()`
[INFO] [stdout]    --> src/c3_consensus/p6_forking.rs:104:1
[INFO] [stdout]     |
[INFO] [stdout] 104 | / fn pow_to_poa(
[INFO] [stdout] 105 | |     fork_height: u64,
[INFO] [stdout] 106 | |     difficulty: u64,
[INFO] [stdout] 107 | |     authorities: Vec<ConsensusAuthority>,
[INFO] [stdout] 108 | | ) -> impl Consensus {
[INFO] [stdout]     | |___________________^
[INFO] [stdout]     |
[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:108:6
[INFO] [stdout]     |
[INFO] [stdout] 108 | ) -> impl Consensus {
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `starting_state`
[INFO] [stdout]   --> src/c1_state_machine/p1_switches.rs:17:16
[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:17:39
[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:44:16
[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:44:46
[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:42:16
[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:42:47
[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:61:16
[INFO] [stdout]    |
[INFO] [stdout] 61 |     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:61:46
[INFO] [stdout]    |
[INFO] [stdout] 61 |     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:43:16
[INFO] [stdout]    |
[INFO] [stdout] 43 |     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:43:43
[INFO] [stdout]    |
[INFO] [stdout] 43 |     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:90:16
[INFO] [stdout]    |
[INFO] [stdout] 90 |     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:90:46
[INFO] [stdout]    |
[INFO] [stdout] 90 |     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:39:29
[INFO] [stdout]    |
[INFO] [stdout] 39 |     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:41:18
[INFO] [stdout]    |
[INFO] [stdout] 41 |     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:51:29
[INFO] [stdout]    |
[INFO] [stdout] 51 |     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:59:22
[INFO] [stdout]    |
[INFO] [stdout] 59 | 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:45:18
[INFO] [stdout]    |
[INFO] [stdout] 45 |     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:53:29
[INFO] [stdout]    |
[INFO] [stdout] 53 |     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:65:34
[INFO] [stdout]    |
[INFO] [stdout] 65 |     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:71:33
[INFO] [stdout]    |
[INFO] [stdout] 71 |     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:37:22
[INFO] [stdout]    |
[INFO] [stdout] 37 |     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:37:45
[INFO] [stdout]    |
[INFO] [stdout] 37 |     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:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |     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:59:29
[INFO] [stdout]    |
[INFO] [stdout] 59 |     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:84:22
[INFO] [stdout]    |
[INFO] [stdout] 84 |     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:91:33
[INFO] [stdout]    |
[INFO] [stdout] 91 |     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:104:48
[INFO] [stdout]     |
[INFO] [stdout] 104 | 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:35:20
[INFO] [stdout]    |
[INFO] [stdout] 35 |     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:44:27
[INFO] [stdout]    |
[INFO] [stdout] 44 |     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:44:47
[INFO] [stdout]    |
[INFO] [stdout] 44 |     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:48:20
[INFO] [stdout]    |
[INFO] [stdout] 48 |     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:70:20
[INFO] [stdout]    |
[INFO] [stdout] 70 | 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:70:39
[INFO] [stdout]    |
[INFO] [stdout] 70 | 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:75:27
[INFO] [stdout]    |
[INFO] [stdout] 75 |     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:75:47
[INFO] [stdout]    |
[INFO] [stdout] 75 |     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:79:20
[INFO] [stdout]    |
[INFO] [stdout] 79 |     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:101:27
[INFO] [stdout]     |
[INFO] [stdout] 101 |     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:101:47
[INFO] [stdout]     |
[INFO] [stdout] 101 |     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:105:20
[INFO] [stdout]     |
[INFO] [stdout] 105 |     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:51:13
[INFO] [stdout]    |
[INFO] [stdout] 51 |     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:59:18
[INFO] [stdout]    |
[INFO] [stdout] 59 |     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:59:41
[INFO] [stdout]    |
[INFO] [stdout] 59 |     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:64:25
[INFO] [stdout]    |
[INFO] [stdout] 64 |     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:69:29
[INFO] [stdout]    |
[INFO] [stdout] 69 |     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:93:17
[INFO] [stdout]    |
[INFO] [stdout] 93 |     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:98:22
[INFO] [stdout]    |
[INFO] [stdout] 98 |     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:98:41
[INFO] [stdout]    |
[INFO] [stdout] 98 |     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:107:33
[INFO] [stdout]     |
[INFO] [stdout] 107 |     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:107:52
[INFO] [stdout]     |
[INFO] [stdout] 107 |     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:123:48
[INFO] [stdout]     |
[INFO] [stdout] 123 | 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:123:65
[INFO] [stdout]     |
[INFO] [stdout] 123 | 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:21:39
[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:27:35
[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:22:39
[INFO] [stdout]    |
[INFO] [stdout] 22 |     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:27:35
[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: `parent_digest`
[INFO] [stdout]   --> src/c3_consensus/p3_poa.rs:23:21
[INFO] [stdout]    |
[INFO] [stdout] 23 |     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:23:51
[INFO] [stdout]    |
[INFO] [stdout] 23 |     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:29:3
[INFO] [stdout]    |
[INFO] [stdout] 29 |         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:30:3
[INFO] [stdout]    |
[INFO] [stdout] 30 |         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:46:21
[INFO] [stdout]    |
[INFO] [stdout] 46 |     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:46:51
[INFO] [stdout]    |
[INFO] [stdout] 46 |     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:52:3
[INFO] [stdout]    |
[INFO] [stdout] 52 |         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:53:3
[INFO] [stdout]    |
[INFO] [stdout] 53 |         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:84:21
[INFO] [stdout]    |
[INFO] [stdout] 84 |     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:84:51
[INFO] [stdout]    |
[INFO] [stdout] 84 |     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:90:3
[INFO] [stdout]    |
[INFO] [stdout] 90 |         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:91:3
[INFO] [stdout]    |
[INFO] [stdout] 91 |         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:20:21
[INFO] [stdout]    |
[INFO] [stdout] 20 |     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:20:51
[INFO] [stdout]    |
[INFO] [stdout] 20 |     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:26:3
[INFO] [stdout]    |
[INFO] [stdout] 26 |         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:27:3
[INFO] [stdout]    |
[INFO] [stdout] 27 |         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:31:21
[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:31:51
[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:37:3
[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:38:3
[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:48:2
[INFO] [stdout]    |
[INFO] [stdout] 48 |     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:49:2
[INFO] [stdout]    |
[INFO] [stdout] 49 |     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:50:2
[INFO] [stdout]    |
[INFO] [stdout] 50 |     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:57:2
[INFO] [stdout]    |
[INFO] [stdout] 57 |     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:58:2
[INFO] [stdout]    |
[INFO] [stdout] 58 |     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:59:2
[INFO] [stdout]    |
[INFO] [stdout] 59 |     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:72:49
[INFO] [stdout]    |
[INFO] [stdout] 72 | 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:105:2
[INFO] [stdout]     |
[INFO] [stdout] 105 |     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:106:2
[INFO] [stdout]     |
[INFO] [stdout] 106 |     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:107:2
[INFO] [stdout]     |
[INFO] [stdout] 107 |     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:74:3
[INFO] [stdout]    |
[INFO] [stdout] 74 |         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:75:3
[INFO] [stdout]    |
[INFO] [stdout] 75 |         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:99:35
[INFO] [stdout]    |
[INFO] [stdout] 99 |     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_framework/mod.rs:19:13
[INFO] [stdout]    |
[INFO] [stdout] 19 |     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_framework/mod.rs:24:18
[INFO] [stdout]    |
[INFO] [stdout] 24 |     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] error: this function depends on never type fallback being `()`
[INFO] [stdout]   --> src/c3_consensus/p1_pow.rs:35:1
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub fn moderate_difficulty_pow() -> impl Consensus {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: Consensus` will fail
[INFO] [stdout]   --> src/c3_consensus/p1_pow.rs:35:37
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub fn moderate_difficulty_pow() -> impl Consensus {
[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]    = note: `#[deny(dependency_on_unit_never_type_fallback)]` (part of `#[deny(rust_2024_compatibility)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `extrinsics_root`
[INFO] [stdout]   --> src/c4_framework/mod.rs:24:36
[INFO] [stdout]    |
[INFO] [stdout] 24 |     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_framework/mod.rs:29:25
[INFO] [stdout]    |
[INFO] [stdout] 29 |     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_framework/mod.rs:34:29
[INFO] [stdout]    |
[INFO] [stdout] 34 |     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] error: this function depends on never type fallback being `()`
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:47:1
[INFO] [stdout]    |
[INFO] [stdout] 47 | / fn change_authorities(
[INFO] [stdout] 48 | |     fork_height: u64,
[INFO] [stdout] 49 | |     initial_authorities: Vec<ConsensusAuthority>,
[INFO] [stdout] 50 | |     final_authorities: Vec<ConsensusAuthority>,
[INFO] [stdout] 51 | | ) -> impl Consensus {
[INFO] [stdout]    | |___________________^
[INFO] [stdout]    |
[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:51:6
[INFO] [stdout]    |
[INFO] [stdout] 51 | ) -> impl Consensus {
[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] 
[INFO] [stdout] 
[INFO] [stdout] error: this function depends on never type fallback being `()`
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:56:1
[INFO] [stdout]    |
[INFO] [stdout] 56 | / fn change_difficulty(
[INFO] [stdout] 57 | |     fork_height: u64,
[INFO] [stdout] 58 | |     initial_difficulty: u64,
[INFO] [stdout] 59 | |     final_difficulty: u64,
[INFO] [stdout] 60 | | ) -> impl Consensus {
[INFO] [stdout]    | |___________________^
[INFO] [stdout]    |
[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:60:6
[INFO] [stdout]    |
[INFO] [stdout] 60 | ) -> impl Consensus {
[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] 
[INFO] [stdout] 
[INFO] [stdout] error: this function depends on never type fallback being `()`
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:72:1
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn even_after_given_height<Original: Consensus>(fork_height: u64) -> impl Consensus {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[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:72:70
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn even_after_given_height<Original: Consensus>(fork_height: u64) -> impl Consensus {
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `genesis_state`
[INFO] [stdout]   --> src/c4_framework/mod.rs:46:17
[INFO] [stdout]    |
[INFO] [stdout] 46 |     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] error: this function depends on never type fallback being `()`
[INFO] [stdout]    --> src/c3_consensus/p6_forking.rs:104:1
[INFO] [stdout]     |
[INFO] [stdout] 104 | / fn pow_to_poa(
[INFO] [stdout] 105 | |     fork_height: u64,
[INFO] [stdout] 106 | |     difficulty: u64,
[INFO] [stdout] 107 | |     authorities: Vec<ConsensusAuthority>,
[INFO] [stdout] 108 | | ) -> impl Consensus {
[INFO] [stdout]     | |___________________^
[INFO] [stdout]     |
[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:108:6
[INFO] [stdout]     |
[INFO] [stdout] 108 | ) -> impl Consensus {
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pre_state`
[INFO] [stdout]   --> src/c4_framework/mod.rs:51:22
[INFO] [stdout]    |
[INFO] [stdout] 51 |     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_framework/mod.rs:51:45
[INFO] [stdout]    |
[INFO] [stdout] 51 |     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_framework/mod.rs:56:33
[INFO] [stdout]    |
[INFO] [stdout] 56 |     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_framework/mod.rs:56:56
[INFO] [stdout]    |
[INFO] [stdout] 56 |     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_framework/mod.rs:64:2
[INFO] [stdout]    |
[INFO] [stdout] 64 |     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_framework/mod.rs:65:2
[INFO] [stdout]    |
[INFO] [stdout] 65 |     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: function `hash` is never used
[INFO] [stdout]   --> src/lib.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | 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:13:11
[INFO] [stdout]    |
[INFO] [stdout] 13 | 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:33:10
[INFO] [stdout]    |
[INFO] [stdout] 33 | 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:34:9
[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] 38 |     pub fn set_serial(&mut self, serial: u64) {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 42 |     pub fn next_serial(&self) -> u64 {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 46 |     fn increment_serial(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 50 |     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:74:10
[INFO] [stdout]    |
[INFO] [stdout] 74 | 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:27:12
[INFO] [stdout]    |
[INFO] [stdout] 27 | 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:29:10
[INFO] [stdout]    |
[INFO] [stdout] 29 | 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:9:6
[INFO] [stdout]   |
[INFO] [stdout] 9 | 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:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | 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:26:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl Header {
[INFO] [stdout]    | ----------- associated items in this implementation
[INFO] [stdout] 25 |     /// Returns a new valid genesis header.
[INFO] [stdout] 26 |     fn genesis() -> Self {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 31 |     fn child(&self) -> Self {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 39 |     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:47:4
[INFO] [stdout]    |
[INFO] [stdout] 47 | 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:54:4
[INFO] [stdout]    |
[INFO] [stdout] 54 | 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:33:5
[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] 41 |     fn child(&self, extrinsic: u64) -> Self {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 51 |     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:59:4
[INFO] [stdout]    |
[INFO] [stdout] 59 | 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:73:4
[INFO] [stdout]    |
[INFO] [stdout] 73 | 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:88:4
[INFO] [stdout]    |
[INFO] [stdout] 88 | 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:12:6
[INFO] [stdout]    |
[INFO] [stdout] 12 | 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:17:7
[INFO] [stdout]    |
[INFO] [stdout] 17 | 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:21:7
[INFO] [stdout]    |
[INFO] [stdout] 21 | 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:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | 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:40:5
[INFO] [stdout]    |
[INFO] [stdout] 38 | impl Header {
[INFO] [stdout]    | ----------- associated items in this implementation
[INFO] [stdout] 39 |     /// Returns a new valid genesis header.
[INFO] [stdout] 40 |     fn genesis() -> Self {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 45 |     fn child(&self, extrinsic: u64) -> Self {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 53 |     fn verify_sub_chain(&self, chain: &[Header]) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 65 |     fn verify_sub_chain_even(&self, chain: &[Header]) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 71 |     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:92:4
[INFO] [stdout]    |
[INFO] [stdout] 92 | 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:5:6
[INFO] [stdout]   |
[INFO] [stdout] 5 | 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:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | 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:30:9
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl Header {
[INFO] [stdout]    | ----------- associated items in this implementation
[INFO] [stdout] 29 |     /// Returns a new valid genesis header.
[INFO] [stdout] 30 |     pub fn genesis() -> Self {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 37 |     pub fn child(&self, extrinsics_root: Hash, state: u64) -> Self {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 |     fn verify_child(&self, child: &Header) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 59 |     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:66:12
[INFO] [stdout]    |
[INFO] [stdout] 66 | 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:78:9
[INFO] [stdout]    |
[INFO] [stdout] 76 | impl Block {
[INFO] [stdout]    | ---------- associated items in this implementation
[INFO] [stdout] 77 |     /// Returns a new valid genesis block. By convention this block has no extrinsics.
[INFO] [stdout] 78 |     pub fn genesis() -> Self {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 84 |     pub fn child(&self, extrinsics: Vec<u64>) -> Self {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 91 |     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:104:4
[INFO] [stdout]     |
[INFO] [stdout] 104 | fn build_invalid_child_block_with_valid_header(parent: &Header) -> Block {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `THRESHOLD` is never used
[INFO] [stdout]   --> src/c2_blockchain/p5_fork_choice.rs:13:7
[INFO] [stdout]    |
[INFO] [stdout] 13 | const THRESHOLD: u64 = u64::max_value() / 100;
[INFO] [stdout]    |       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `ForkChoice` is never used
[INFO] [stdout]   --> src/c2_blockchain/p5_fork_choice.rs:18:11
[INFO] [stdout]    |
[INFO] [stdout] 18 | 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:41:12
[INFO] [stdout]    |
[INFO] [stdout] 41 | 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:64:12
[INFO] [stdout]    |
[INFO] [stdout] 64 | 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:70:4
[INFO] [stdout]    |
[INFO] [stdout] 70 | 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:98:12
[INFO] [stdout]    |
[INFO] [stdout] 98 | 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:133:4
[INFO] [stdout]     |
[INFO] [stdout] 133 | 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:16:6
[INFO] [stdout]    |
[INFO] [stdout] 16 | 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:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | 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:33:12
[INFO] [stdout]    |
[INFO] [stdout] 33 | 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:51:5
[INFO] [stdout]    |
[INFO] [stdout] 49 | impl Header {
[INFO] [stdout]    | ----------- associated items in this implementation
[INFO] [stdout] 50 |     /// Returns a new valid genesis header.
[INFO] [stdout] 51 |     fn genesis(genesis_state_root: Hash) -> Self {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 59 |     fn child(&self, extrinsics_root: Hash, state_root: Hash) -> Self {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 64 |     fn verify_child(&self, child: &Header) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 69 |     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:76:12
[INFO] [stdout]    |
[INFO] [stdout] 76 | 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:93:9
[INFO] [stdout]     |
[INFO] [stdout]  91 | impl Block {
[INFO] [stdout]     | ---------- associated items in this implementation
[INFO] [stdout]  92 |     /// Returns a new valid genesis block. By convention this block has no extrinsics.
[INFO] [stdout]  93 |     pub fn genesis(genesis_state: &State) -> Self {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  98 |     pub fn child(&self, pre_state: &State, extrinsics: Vec<u64>) -> Self {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 107 |     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:123:4
[INFO] [stdout]     |
[INFO] [stdout] 123 | 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:13:6
[INFO] [stdout]    |
[INFO] [stdout] 13 | type Hash = u64;
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Header` is never constructed
[INFO] [stdout]   --> src/c3_consensus/mod.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | 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:35:11
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub trait Consensus {
[INFO] [stdout]    |           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ConsensusAuthority` is never used
[INFO] [stdout]    --> src/c3_consensus/mod.rs:107:10
[INFO] [stdout]     |
[INFO] [stdout] 107 | pub enum ConsensusAuthority {
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^^^
[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:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub fn moderate_difficulty_pow() -> impl Consensus {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DictatorConsensus` is never constructed
[INFO] [stdout]   --> src/c3_consensus/p2_dictator.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct DictatorConsensus {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SimplePoa` is never constructed
[INFO] [stdout]   --> src/c3_consensus/p3_poa.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | struct SimplePoa {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PoaRoundRobinByHeight` is never constructed
[INFO] [stdout]   --> src/c3_consensus/p3_poa.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | struct PoaRoundRobinByHeight {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PoaRoundRobinBySlot` is never constructed
[INFO] [stdout]   --> src/c3_consensus/p3_poa.rs:68:8
[INFO] [stdout]    |
[INFO] [stdout] 68 | struct PoaRoundRobinBySlot {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SlotDigest` is never constructed
[INFO] [stdout]   --> src/c3_consensus/p3_poa.rs:76:8
[INFO] [stdout]    |
[INFO] [stdout] 76 | 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:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct EvenOnly<Inner: Consensus>(PhantomData<Inner>);
[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:36:4
[INFO] [stdout]    |
[INFO] [stdout] 36 | 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:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct AlternatingPowPoa;
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^
[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:47:4
[INFO] [stdout]    |
[INFO] [stdout] 47 | 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:56:4
[INFO] [stdout]    |
[INFO] [stdout] 56 | 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:72:4
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn even_after_given_height<Original: Consensus>(fork_height: u64) -> impl Consensus {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `PowOrPoaDigest` is never used
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:83:6
[INFO] [stdout]    |
[INFO] [stdout] 83 | enum PowOrPoaDigest {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `pow_to_poa` is never used
[INFO] [stdout]    --> src/c3_consensus/p6_forking.rs:104:4
[INFO] [stdout]     |
[INFO] [stdout] 104 | fn pow_to_poa(
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Hash` is never used
[INFO] [stdout]   --> src/c4_framework/mod.rs:15:6
[INFO] [stdout]    |
[INFO] [stdout] 15 | 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_framework/mod.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl<Digest> Header<Digest> {
[INFO] [stdout]    | --------------------------- associated items in this implementation
[INFO] [stdout] 18 |     /// Returns a new valid genesis header.
[INFO] [stdout] 19 |     fn genesis(genesis_state_root: Hash) -> Self {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 24 |     fn child(&self, state_root: Hash, extrinsics_root: Hash) -> Self {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 29 |     fn verify_child(&self, child: &Self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 34 |     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_framework/mod.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | 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_framework/mod.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 44 | impl<C: Consensus, SM: StateMachine> Block<C, SM> {
[INFO] [stdout]    | ------------------------------------------------- associated items in this implementation
[INFO] [stdout] 45 |     /// Returns a new valid genesis block. By convention this block has no extrinsics.
[INFO] [stdout] 46 |     pub fn genesis(genesis_state: &SM::State) -> Self {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 51 |     pub fn child(&self, pre_state: &SM::State, extrinsics: Vec<u8>) -> Self {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 56 |     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_framework/mod.rs:63:4
[INFO] [stdout]    |
[INFO] [stdout] 63 | fn create_empty_chain<C: Consensus, SM: StateMachine>(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `blockchain-from-scratch` (lib) due to 10 previous errors; 193 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:17:16
[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:17:39
[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:44:16
[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:44:46
[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:42:16
[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:42:47
[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:61:16
[INFO] [stdout]    |
[INFO] [stdout] 61 |     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:61:46
[INFO] [stdout]    |
[INFO] [stdout] 61 |     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:43:16
[INFO] [stdout]    |
[INFO] [stdout] 43 |     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:43:43
[INFO] [stdout]    |
[INFO] [stdout] 43 |     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:90:16
[INFO] [stdout]    |
[INFO] [stdout] 90 |     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:90:46
[INFO] [stdout]    |
[INFO] [stdout] 90 |     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:39:29
[INFO] [stdout]    |
[INFO] [stdout] 39 |     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:41:18
[INFO] [stdout]    |
[INFO] [stdout] 41 |     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:51:29
[INFO] [stdout]    |
[INFO] [stdout] 51 |     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:59:22
[INFO] [stdout]    |
[INFO] [stdout] 59 | 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:45:18
[INFO] [stdout]    |
[INFO] [stdout] 45 |     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:53:29
[INFO] [stdout]    |
[INFO] [stdout] 53 |     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:65:34
[INFO] [stdout]    |
[INFO] [stdout] 65 |     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:71:33
[INFO] [stdout]    |
[INFO] [stdout] 71 |     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:37:22
[INFO] [stdout]    |
[INFO] [stdout] 37 |     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:37:45
[INFO] [stdout]    |
[INFO] [stdout] 37 |     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:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |     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:59:29
[INFO] [stdout]    |
[INFO] [stdout] 59 |     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:84:22
[INFO] [stdout]    |
[INFO] [stdout] 84 |     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:91:33
[INFO] [stdout]    |
[INFO] [stdout] 91 |     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:104:48
[INFO] [stdout]     |
[INFO] [stdout] 104 | 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:35:20
[INFO] [stdout]    |
[INFO] [stdout] 35 |     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:44:27
[INFO] [stdout]    |
[INFO] [stdout] 44 |     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:44:47
[INFO] [stdout]    |
[INFO] [stdout] 44 |     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:48:20
[INFO] [stdout]    |
[INFO] [stdout] 48 |     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:70:20
[INFO] [stdout]    |
[INFO] [stdout] 70 | 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:70:39
[INFO] [stdout]    |
[INFO] [stdout] 70 | 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:75:27
[INFO] [stdout]    |
[INFO] [stdout] 75 |     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:75:47
[INFO] [stdout]    |
[INFO] [stdout] 75 |     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:79:20
[INFO] [stdout]    |
[INFO] [stdout] 79 |     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:101:27
[INFO] [stdout]     |
[INFO] [stdout] 101 |     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:101:47
[INFO] [stdout]     |
[INFO] [stdout] 101 |     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:105:20
[INFO] [stdout]     |
[INFO] [stdout] 105 |     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:51:13
[INFO] [stdout]    |
[INFO] [stdout] 51 |     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:59:18
[INFO] [stdout]    |
[INFO] [stdout] 59 |     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:59:41
[INFO] [stdout]    |
[INFO] [stdout] 59 |     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:64:25
[INFO] [stdout]    |
[INFO] [stdout] 64 |     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:69:29
[INFO] [stdout]    |
[INFO] [stdout] 69 |     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:93:17
[INFO] [stdout]    |
[INFO] [stdout] 93 |     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:98:22
[INFO] [stdout]    |
[INFO] [stdout] 98 |     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:98:41
[INFO] [stdout]    |
[INFO] [stdout] 98 |     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:107:33
[INFO] [stdout]     |
[INFO] [stdout] 107 |     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:107:52
[INFO] [stdout]     |
[INFO] [stdout] 107 |     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:123:48
[INFO] [stdout]     |
[INFO] [stdout] 123 | 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:123:65
[INFO] [stdout]     |
[INFO] [stdout] 123 | 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:21:39
[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:27:35
[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:22:39
[INFO] [stdout]    |
[INFO] [stdout] 22 |     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:27:35
[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: `parent_digest`
[INFO] [stdout]   --> src/c3_consensus/p3_poa.rs:23:21
[INFO] [stdout]    |
[INFO] [stdout] 23 |     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:23:51
[INFO] [stdout]    |
[INFO] [stdout] 23 |     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:29:3
[INFO] [stdout]    |
[INFO] [stdout] 29 |         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:30:3
[INFO] [stdout]    |
[INFO] [stdout] 30 |         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:46:21
[INFO] [stdout]    |
[INFO] [stdout] 46 |     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:46:51
[INFO] [stdout]    |
[INFO] [stdout] 46 |     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:52:3
[INFO] [stdout]    |
[INFO] [stdout] 52 |         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:53:3
[INFO] [stdout]    |
[INFO] [stdout] 53 |         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:84:21
[INFO] [stdout]    |
[INFO] [stdout] 84 |     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:84:51
[INFO] [stdout]    |
[INFO] [stdout] 84 |     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:90:3
[INFO] [stdout]    |
[INFO] [stdout] 90 |         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:91:3
[INFO] [stdout]    |
[INFO] [stdout] 91 |         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:20:21
[INFO] [stdout]    |
[INFO] [stdout] 20 |     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:20:51
[INFO] [stdout]    |
[INFO] [stdout] 20 |     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:26:3
[INFO] [stdout]    |
[INFO] [stdout] 26 |         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:27:3
[INFO] [stdout]    |
[INFO] [stdout] 27 |         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:31:21
[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:31:51
[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:37:3
[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:38:3
[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:48:2
[INFO] [stdout]    |
[INFO] [stdout] 48 |     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:49:2
[INFO] [stdout]    |
[INFO] [stdout] 49 |     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:50:2
[INFO] [stdout]    |
[INFO] [stdout] 50 |     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:57:2
[INFO] [stdout]    |
[INFO] [stdout] 57 |     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:58:2
[INFO] [stdout]    |
[INFO] [stdout] 58 |     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:59:2
[INFO] [stdout]    |
[INFO] [stdout] 59 |     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:72:49
[INFO] [stdout]    |
[INFO] [stdout] 72 | 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:105:2
[INFO] [stdout]     |
[INFO] [stdout] 105 |     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:106:2
[INFO] [stdout]     |
[INFO] [stdout] 106 |     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:107:2
[INFO] [stdout]     |
[INFO] [stdout] 107 |     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:74:3
[INFO] [stdout]    |
[INFO] [stdout] 74 |         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:75:3
[INFO] [stdout]    |
[INFO] [stdout] 75 |         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:99:35
[INFO] [stdout]    |
[INFO] [stdout] 99 |     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_framework/mod.rs:19:13
[INFO] [stdout]    |
[INFO] [stdout] 19 |     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_framework/mod.rs:24:18
[INFO] [stdout]    |
[INFO] [stdout] 24 |     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_framework/mod.rs:24:36
[INFO] [stdout]    |
[INFO] [stdout] 24 |     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_framework/mod.rs:29:25
[INFO] [stdout]    |
[INFO] [stdout] 29 |     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_framework/mod.rs:34:29
[INFO] [stdout]    |
[INFO] [stdout] 34 |     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_framework/mod.rs:46:17
[INFO] [stdout]    |
[INFO] [stdout] 46 |     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_framework/mod.rs:51:22
[INFO] [stdout]    |
[INFO] [stdout] 51 |     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_framework/mod.rs:51:45
[INFO] [stdout]    |
[INFO] [stdout] 51 |     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_framework/mod.rs:56:33
[INFO] [stdout]    |
[INFO] [stdout] 56 |     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_framework/mod.rs:56:56
[INFO] [stdout]    |
[INFO] [stdout] 56 |     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_framework/mod.rs:64:2
[INFO] [stdout]    |
[INFO] [stdout] 64 |     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_framework/mod.rs:65:2
[INFO] [stdout]    |
[INFO] [stdout] 65 |     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: associated function `human_name` is never used
[INFO] [stdout]   --> src/c1_state_machine/mod.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub trait StateMachine {
[INFO] [stdout]    |           ------------ associated function in this trait
[INFO] [stdout] ...
[INFO] [stdout] 26 |     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:21:12
[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:23:11
[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:29:9
[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:33:9
[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:35:13
[INFO] [stdout]    |
[INFO] [stdout] 35 |     Transfer { sender: User, receiver: User, amount: u64 },
[INFO] [stdout]    |     --------   ^^^^^^        ^^^^^^^^        ^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     fields in this variant
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `next_serial` is never used
[INFO] [stdout]   --> src/c1_state_machine/p5_digital_cash.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 33 | impl State {
[INFO] [stdout]    | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 42 |     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:76:9
[INFO] [stdout]    |
[INFO] [stdout] 76 |     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:82:13
[INFO] [stdout]    |
[INFO] [stdout] 82 |     Transfer { spends: Vec<Bill>, receives: Vec<Bill> },
[INFO] [stdout]    |     --------   ^^^^^^             ^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     fields in this variant
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `State` is never constructed
[INFO] [stdout]   --> src/c1_state_machine/p6_open_ended.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 27 | 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:29:10
[INFO] [stdout]    |
[INFO] [stdout] 29 | 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:59:4
[INFO] [stdout]    |
[INFO] [stdout] 59 | 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:73:4
[INFO] [stdout]    |
[INFO] [stdout] 73 | fn build_an_invalid_chain() -> 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:21:7
[INFO] [stdout]    |
[INFO] [stdout] 21 | 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:59:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl Header {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 59 |     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:69:5
[INFO] [stdout]    |
[INFO] [stdout] 49 | impl Header {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 69 |     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:13:6
[INFO] [stdout]    |
[INFO] [stdout] 13 | type Hash = u64;
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Header` is never constructed
[INFO] [stdout]   --> src/c3_consensus/mod.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | 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:35:11
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub trait Consensus {
[INFO] [stdout]    |           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ConsensusAuthority` is never used
[INFO] [stdout]    --> src/c3_consensus/mod.rs:107:10
[INFO] [stdout]     |
[INFO] [stdout] 107 | pub enum ConsensusAuthority {
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^^^
[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:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub fn moderate_difficulty_pow() -> impl Consensus {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DictatorConsensus` is never constructed
[INFO] [stdout]   --> src/c3_consensus/p2_dictator.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct DictatorConsensus {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SimplePoa` is never constructed
[INFO] [stdout]   --> src/c3_consensus/p3_poa.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | struct SimplePoa {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PoaRoundRobinByHeight` is never constructed
[INFO] [stdout]   --> src/c3_consensus/p3_poa.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | struct PoaRoundRobinByHeight {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PoaRoundRobinBySlot` is never constructed
[INFO] [stdout]   --> src/c3_consensus/p3_poa.rs:68:8
[INFO] [stdout]    |
[INFO] [stdout] 68 | struct PoaRoundRobinBySlot {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SlotDigest` is never constructed
[INFO] [stdout]   --> src/c3_consensus/p3_poa.rs:76:8
[INFO] [stdout]    |
[INFO] [stdout] 76 | 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:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct EvenOnly<Inner: Consensus>(PhantomData<Inner>);
[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:36:4
[INFO] [stdout]    |
[INFO] [stdout] 36 | 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:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct AlternatingPowPoa;
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^
[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:47:4
[INFO] [stdout]    |
[INFO] [stdout] 47 | 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:56:4
[INFO] [stdout]    |
[INFO] [stdout] 56 | 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:72:4
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn even_after_given_height<Original: Consensus>(fork_height: u64) -> impl Consensus {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `PowOrPoaDigest` is never used
[INFO] [stdout]   --> src/c3_consensus/p6_forking.rs:83:6
[INFO] [stdout]    |
[INFO] [stdout] 83 | enum PowOrPoaDigest {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `pow_to_poa` is never used
[INFO] [stdout]    --> src/c3_consensus/p6_forking.rs:104:4
[INFO] [stdout]     |
[INFO] [stdout] 104 | fn pow_to_poa(
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Hash` is never used
[INFO] [stdout]   --> src/c4_framework/mod.rs:15:6
[INFO] [stdout]    |
[INFO] [stdout] 15 | 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_framework/mod.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl<Digest> Header<Digest> {
[INFO] [stdout]    | --------------------------- associated items in this implementation
[INFO] [stdout] 18 |     /// Returns a new valid genesis header.
[INFO] [stdout] 19 |     fn genesis(genesis_state_root: Hash) -> Self {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 24 |     fn child(&self, state_root: Hash, extrinsics_root: Hash) -> Self {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 29 |     fn verify_child(&self, child: &Self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 34 |     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_framework/mod.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | 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_framework/mod.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 44 | impl<C: Consensus, SM: StateMachine> Block<C, SM> {
[INFO] [stdout]    | ------------------------------------------------- associated items in this implementation
[INFO] [stdout] 45 |     /// Returns a new valid genesis block. By convention this block has no extrinsics.
[INFO] [stdout] 46 |     pub fn genesis(genesis_state: &SM::State) -> Self {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 51 |     pub fn child(&self, pre_state: &SM::State, extrinsics: Vec<u8>) -> Self {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 56 |     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_framework/mod.rs:63:4
[INFO] [stdout]    |
[INFO] [stdout] 63 | fn create_empty_chain<C: Consensus, SM: StateMachine>(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `blockchain-from-scratch` (lib test) due to 10 previous errors; 142 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "44cf22c993a58784d2a9993578dca9fce80e3c27956cdb0af45123a2eace61b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44cf22c993a58784d2a9993578dca9fce80e3c27956cdb0af45123a2eace61b6", kill_on_drop: false }`
[INFO] [stdout] 44cf22c993a58784d2a9993578dca9fce80e3c27956cdb0af45123a2eace61b6
