[INFO] cloning repository https://github.com/gregoriB/blockchain-Rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gregoriB/blockchain-Rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FgregoriB%2Fblockchain-Rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FgregoriB%2Fblockchain-Rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 43c8845bd3885ef6f23f37f1c2ed2f797becc193
[INFO] checking gregoriB/blockchain-Rust against try#8de4b308b608cded0ebccf658a0fc719bce87d4e for pr-89056
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FgregoriB%2Fblockchain-Rust" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gregoriB/blockchain-Rust on toolchain 8de4b308b608cded0ebccf658a0fc719bce87d4e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/gregoriB/blockchain-Rust
[INFO] finished tweaking git repo https://github.com/gregoriB/blockchain-Rust
[INFO] tweaked toml for git repo https://github.com/gregoriB/blockchain-Rust written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/gregoriB/blockchain-Rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded crypto-hash v0.3.4
[INFO] [stderr]   Downloaded commoncrypto-sys v0.2.0
[INFO] [stderr]   Downloaded commoncrypto v0.2.0
[INFO] [stderr]   Downloaded stfu8 v0.2.4
[INFO] [stderr]   Downloaded openssl v0.10.35
[INFO] [stderr]   Downloaded vcpkg v0.2.15
[INFO] [stderr]   Downloaded openssl-sys v0.9.65
[INFO] [stderr]   Downloaded demonstrate v0.4.5
[INFO] [stderr]   Downloaded voca_rs v1.13.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a8ec46b4dd3ccb599afcea5955655151eb116105ea10507514d85c2e0435320a
[INFO] running `Command { std: "docker" "start" "-a" "a8ec46b4dd3ccb599afcea5955655151eb116105ea10507514d85c2e0435320a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a8ec46b4dd3ccb599afcea5955655151eb116105ea10507514d85c2e0435320a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8ec46b4dd3ccb599afcea5955655151eb116105ea10507514d85c2e0435320a", kill_on_drop: false }`
[INFO] [stdout] a8ec46b4dd3ccb599afcea5955655151eb116105ea10507514d85c2e0435320a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 24e7ccb836ef5f29c841056b4de86e2811af223f661ca6924b491efad156743d
[INFO] running `Command { std: "docker" "start" "-a" "24e7ccb836ef5f29c841056b4de86e2811af223f661ca6924b491efad156743d", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling cc v1.0.69
[INFO] [stderr]     Checking foreign-types-shared v0.1.1
[INFO] [stderr]     Checking hex v0.3.2
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking foreign-types v0.3.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling openssl-sys v0.9.65
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling openssl v0.10.35
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]    Compiling stfu8 v0.2.4
[INFO] [stderr]    Compiling voca_rs v1.13.1
[INFO] [stderr]     Checking crypto-hash v0.3.4
[INFO] [stderr]     Checking block_chain v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `pending_transactions`
[INFO] [stdout]  --> src/blockchain.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     pending_transactions: Vec<Transaction>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_chain`
[INFO] [stdout]   --> src/blockchain.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 49 |     pub fn get_chain(&self) -> Vec<Block> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_pending_transactions`
[INFO] [stdout]   --> src/blockchain.rs:53:12
[INFO] [stdout]    |
[INFO] [stdout] 53 |     pub fn get_pending_transactions(&self) -> Vec<Transaction> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_last_block`
[INFO] [stdout]   --> src/blockchain.rs:57:12
[INFO] [stdout]    |
[INFO] [stdout] 57 |     pub fn get_last_block(&self) -> Block {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `create_block`
[INFO] [stdout]   --> src/blockchain.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 67 |     fn create_block(&self) -> Block {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_block`
[INFO] [stdout]   --> src/blockchain.rs:71:12
[INFO] [stdout]    |
[INFO] [stdout] 71 |     pub fn add_block(&mut self, payout_address: &'static str) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `update_chain`
[INFO] [stdout]   --> src/blockchain.rs:82:8
[INFO] [stdout]    |
[INFO] [stdout] 82 |     fn update_chain(&mut self, last_block: Block, new_block: Block) {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pay_miner`
[INFO] [stdout]   --> src/blockchain.rs:89:8
[INFO] [stdout]    |
[INFO] [stdout] 89 |     fn pay_miner(&mut self, payout_address: &'static str) {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `create_payout_transaction`
[INFO] [stdout]   --> src/blockchain.rs:94:8
[INFO] [stdout]    |
[INFO] [stdout] 94 |     fn create_payout_transaction(&self, payout_address: &'static str) -> Transaction {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `reset_pending_transactions`
[INFO] [stdout]   --> src/blockchain.rs:98:8
[INFO] [stdout]    |
[INFO] [stdout] 98 |     fn reset_pending_transactions(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_pending_transaction`
[INFO] [stdout]    --> src/blockchain.rs:102:12
[INFO] [stdout]     |
[INFO] [stdout] 102 |     pub fn add_pending_transaction(&mut self, transaction: Transaction) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `transactions`
[INFO] [stdout]  --> src/block.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     transactions: Vec<Transaction>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_transactions`
[INFO] [stdout]   --> src/block.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn get_transactions(&self) -> Vec<Transaction> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_hash`
[INFO] [stdout]   --> src/block.rs:45:12
[INFO] [stdout]    |
[INFO] [stdout] 45 |     pub fn get_hash(&self) -> &str {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_prev_hash`
[INFO] [stdout]   --> src/block.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 49 |     pub fn get_prev_hash(&self) -> &str {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_next_hash`
[INFO] [stdout]   --> src/block.rs:53:12
[INFO] [stdout]    |
[INFO] [stdout] 53 |     pub fn get_next_hash(&self) -> &str {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_prev_hash`
[INFO] [stdout]   --> src/block.rs:57:12
[INFO] [stdout]    |
[INFO] [stdout] 57 |     pub fn set_prev_hash(&mut self, hash: &str) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_next_hash`
[INFO] [stdout]   --> src/block.rs:61:12
[INFO] [stdout]    |
[INFO] [stdout] 61 |     pub fn set_next_hash(&mut self, hash: &str) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `mine`
[INFO] [stdout]   --> src/block.rs:65:12
[INFO] [stdout]    |
[INFO] [stdout] 65 |     pub fn mine(&mut self, difficulty: usize) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_hash`
[INFO] [stdout]   --> src/transaction.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 37 |     pub fn get_hash(&self) -> &str {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_sender`
[INFO] [stdout]   --> src/transaction.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn get_sender(&self) -> &'static str {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_receiver`
[INFO] [stdout]   --> src/transaction.rs:45:12
[INFO] [stdout]    |
[INFO] [stdout] 45 |     pub fn get_receiver(&self) -> &'static str {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_amount`
[INFO] [stdout]   --> src/transaction.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 49 |     pub fn get_amount(&self) -> u32 {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 23 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling demonstrate v0.4.5
[INFO] [stdout] warning: unused variable: `first_transaction`
[INFO] [stdout]   --> tests/block.rs:10:17
[INFO] [stdout]    |
[INFO] [stdout] 10 |             let first_transaction = transactions.first().unwrap().clone();
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_first_transaction`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> tests/block.rs:11:17
[INFO] [stdout]    |
[INFO] [stdout] 11 |             let mut block = Block::new(transactions);
[INFO] [stdout]    |                 ----^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `payout_address`
[INFO] [stdout]  --> tests/blockchain.rs:9:17
[INFO] [stdout]   |
[INFO] [stdout] 9 |             let payout_address = "test_payout";
[INFO] [stdout]   |                 ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_payout_address`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `transaction`
[INFO] [stdout]   --> tests/blockchain.rs:20:17
[INFO] [stdout]    |
[INFO] [stdout] 20 |             let transaction = Transaction::new(sender, receiver, amount);
[INFO] [stdout]    |                 ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_transaction`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> tests/blockchain.rs:15:17
[INFO] [stdout]    |
[INFO] [stdout] 15 |             let mut blockchain = BlockChain::new(name, difficulty, payout, supply);
[INFO] [stdout]    |                 ----^^^^^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `pending_transactions`
[INFO] [stdout]  --> src/blockchain.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     pending_transactions: Vec<Transaction>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_chain`
[INFO] [stdout]   --> src/blockchain.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 49 |     pub fn get_chain(&self) -> Vec<Block> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_pending_transactions`
[INFO] [stdout]   --> src/blockchain.rs:53:12
[INFO] [stdout]    |
[INFO] [stdout] 53 |     pub fn get_pending_transactions(&self) -> Vec<Transaction> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_last_block`
[INFO] [stdout]   --> src/blockchain.rs:57:12
[INFO] [stdout]    |
[INFO] [stdout] 57 |     pub fn get_last_block(&self) -> Block {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `create_block`
[INFO] [stdout]   --> src/blockchain.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 67 |     fn create_block(&self) -> Block {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_block`
[INFO] [stdout]   --> src/blockchain.rs:71:12
[INFO] [stdout]    |
[INFO] [stdout] 71 |     pub fn add_block(&mut self, payout_address: &'static str) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `update_chain`
[INFO] [stdout]   --> src/blockchain.rs:82:8
[INFO] [stdout]    |
[INFO] [stdout] 82 |     fn update_chain(&mut self, last_block: Block, new_block: Block) {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pay_miner`
[INFO] [stdout]   --> src/blockchain.rs:89:8
[INFO] [stdout]    |
[INFO] [stdout] 89 |     fn pay_miner(&mut self, payout_address: &'static str) {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `create_payout_transaction`
[INFO] [stdout]   --> src/blockchain.rs:94:8
[INFO] [stdout]    |
[INFO] [stdout] 94 |     fn create_payout_transaction(&self, payout_address: &'static str) -> Transaction {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `reset_pending_transactions`
[INFO] [stdout]   --> src/blockchain.rs:98:8
[INFO] [stdout]    |
[INFO] [stdout] 98 |     fn reset_pending_transactions(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_pending_transaction`
[INFO] [stdout]    --> src/blockchain.rs:102:12
[INFO] [stdout]     |
[INFO] [stdout] 102 |     pub fn add_pending_transaction(&mut self, transaction: Transaction) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `transactions`
[INFO] [stdout]  --> src/block.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     transactions: Vec<Transaction>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_transactions`
[INFO] [stdout]   --> src/block.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn get_transactions(&self) -> Vec<Transaction> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_hash`
[INFO] [stdout]   --> src/block.rs:45:12
[INFO] [stdout]    |
[INFO] [stdout] 45 |     pub fn get_hash(&self) -> &str {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_prev_hash`
[INFO] [stdout]   --> src/block.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 49 |     pub fn get_prev_hash(&self) -> &str {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_next_hash`
[INFO] [stdout]   --> src/block.rs:53:12
[INFO] [stdout]    |
[INFO] [stdout] 53 |     pub fn get_next_hash(&self) -> &str {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_prev_hash`
[INFO] [stdout]   --> src/block.rs:57:12
[INFO] [stdout]    |
[INFO] [stdout] 57 |     pub fn set_prev_hash(&mut self, hash: &str) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_next_hash`
[INFO] [stdout]   --> src/block.rs:61:12
[INFO] [stdout]    |
[INFO] [stdout] 61 |     pub fn set_next_hash(&mut self, hash: &str) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `mine`
[INFO] [stdout]   --> src/block.rs:65:12
[INFO] [stdout]    |
[INFO] [stdout] 65 |     pub fn mine(&mut self, difficulty: usize) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_hash`
[INFO] [stdout]   --> src/transaction.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 37 |     pub fn get_hash(&self) -> &str {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_sender`
[INFO] [stdout]   --> src/transaction.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn get_sender(&self) -> &'static str {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_receiver`
[INFO] [stdout]   --> src/transaction.rs:45:12
[INFO] [stdout]    |
[INFO] [stdout] 45 |     pub fn get_receiver(&self) -> &'static str {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_amount`
[INFO] [stdout]   --> src/transaction.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 49 |     pub fn get_amount(&self) -> u32 {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 23 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.31s
[INFO] running `Command { std: "docker" "inspect" "24e7ccb836ef5f29c841056b4de86e2811af223f661ca6924b491efad156743d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24e7ccb836ef5f29c841056b4de86e2811af223f661ca6924b491efad156743d", kill_on_drop: false }`
[INFO] [stdout] 24e7ccb836ef5f29c841056b4de86e2811af223f661ca6924b491efad156743d