[INFO] cloning repository https://github.com/teddy-commits/WEYRA
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/teddy-commits/WEYRA" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fteddy-commits%2FWEYRA", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fteddy-commits%2FWEYRA'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 14642ad5931dbe520741c838f380f3d01dc7a9e5
[INFO] testing teddy-commits/WEYRA against master#cced03bfd61a304243a34504618ecec86c17063f for pr-154065-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fteddy-commits%2FWEYRA" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/teddy-commits/WEYRA
[INFO] finished tweaking git repo https://github.com/teddy-commits/WEYRA
[INFO] tweaked toml for git repo https://github.com/teddy-commits/WEYRA written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/teddy-commits/WEYRA on toolchain cced03bfd61a304243a34504618ecec86c17063f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cced03bfd61a304243a34504618ecec86c17063f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/teddy-commits/WEYRA 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" "+cced03bfd61a304243a34504618ecec86c17063f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+cced03bfd61a304243a34504618ecec86c17063f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a9d5af034b276a00a7d078a0f48ea5da39c22dec5360bc407953a1c7f1e192b0
[INFO] running `Command { std: "docker" "start" "-a" "a9d5af034b276a00a7d078a0f48ea5da39c22dec5360bc407953a1c7f1e192b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a9d5af034b276a00a7d078a0f48ea5da39c22dec5360bc407953a1c7f1e192b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9d5af034b276a00a7d078a0f48ea5da39c22dec5360bc407953a1c7f1e192b0", kill_on_drop: false }`
[INFO] [stdout] a9d5af034b276a00a7d078a0f48ea5da39c22dec5360bc407953a1c7f1e192b0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_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" "+cced03bfd61a304243a34504618ecec86c17063f" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 31cb4e0dd60d46b9ac7e3cfa1401eff52f8513e7b0908cffb4ee1eeca85e6a98
[INFO] running `Command { std: "docker" "start" "-a" "31cb4e0dd60d46b9ac7e3cfa1401eff52f8513e7b0908cffb4ee1eeca85e6a98", kill_on_drop: false }`
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[INFO] [stdout] warning: use of deprecated function `base64::encode`: Use Engine::encode
[INFO] [stdout]   --> src/wallet.rs:82:17
[INFO] [stdout]    |
[INFO] [stdout] 82 |         base64::encode(signature)
[INFO] [stdout]    |                 ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `base64::decode`: Use Engine::decode
[INFO] [stdout]   --> src/wallet.rs:91:39
[INFO] [stdout]    |
[INFO] [stdout] 91 |         let signature = match base64::decode(signature_str) {
[INFO] [stdout]    |                                       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:29:13
[INFO] [stdout]    |
[INFO] [stdout] 29 |         let mut node = BlockchainNode::new(4, 100.0);
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `verify_transaction` is never used
[INFO] [stdout]   --> src/block.rs:74:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl Block {
[INFO] [stdout]    | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 74 |     pub fn verify_transaction(&self, tx_id: &str) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `is_chain_valid` and `verify_transaction_in_block` are never used
[INFO] [stdout]    --> src/blockchain.rs:283:12
[INFO] [stdout]     |
[INFO] [stdout]  17 | impl Blockchain {
[INFO] [stdout]     | --------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 283 |     pub fn is_chain_valid(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 310 |     pub fn verify_transaction_in_block(&self, block_index: usize, tx_id: &str) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `generate_proof`, `find_proof`, and `verify_proof` are never used
[INFO] [stdout]    --> src/merkle_tree.rs:93:12
[INFO] [stdout]     |
[INFO] [stdout]  17 | impl MerkleTree {
[INFO] [stdout]     | --------------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  93 |     pub fn generate_proof(&self, leaf_hash: &str) -> Option<Vec<(String, bool)>> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 106 |     fn find_proof(
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 137 |     pub fn verify_proof(leaf_hash: &str, proof: Vec<(String, bool)>, root_hash: &str) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `peer_id` and `event_sender` are never read
[INFO] [stdout]   --> src/network.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 65 | pub struct P2PNetwork {
[INFO] [stdout]    |            ---------- fields in this struct
[INFO] [stdout] 66 |     pub swarm: Swarm<BlockchainBehaviour>,
[INFO] [stdout] 67 |     pub peer_id: PeerId,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 70 |     pub event_sender: mpsc::UnboundedSender<NetworkEvent>,
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `NewPeer`, `PeerDisconnected`, `NewBlock`, `NewTransaction`, and `SyncRequest` are never constructed
[INFO] [stdout]   --> src/network.rs:75:5
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub enum NetworkEvent {
[INFO] [stdout]    |          ------------ variants in this enum
[INFO] [stdout] 75 |     NewPeer(PeerId),
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 76 |     PeerDisconnected(PeerId),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 77 |     NewBlock(Block),
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 78 |     NewTransaction(UTXOTransaction),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 79 |     SyncRequest(PeerId, u64, u64),
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `NetworkEvent` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `process_events` is never used
[INFO] [stdout]    --> src/node.rs:145:18
[INFO] [stdout]     |
[INFO] [stdout]  17 | impl BlockchainNode {
[INFO] [stdout]     | ------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 145 |     pub async fn process_events(&mut self) {
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `target_peg`, `source`, and `last_update` are never read
[INFO] [stdout]   --> src/oracle.rs:9:9
[INFO] [stdout]    |
[INFO] [stdout]  7 | pub struct PriceOracle {
[INFO] [stdout]    |            ----------- fields in this struct
[INFO] [stdout]  8 |     pub current_price: Arc<Mutex<f64>>,
[INFO] [stdout]  9 |     pub target_peg: f64,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 10 |     pub source: OracleSource,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 11 |     pub last_update: Arc<Mutex<i64>>,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `PriceOracle` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Chainlink`, `Manual`, and `Aggregated` are never constructed
[INFO] [stdout]   --> src/oracle.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub enum OracleSource {
[INFO] [stdout]    |          ------------ variants in this enum
[INFO] [stdout] 16 |     CoinGecko,
[INFO] [stdout] 17 |     Chainlink,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 18 |     Manual(f64),
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 19 |     Aggregated,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `OracleSource` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/oracle.rs:32:12
[INFO] [stdout]     |
[INFO] [stdout]  22 | impl PriceOracle {
[INFO] [stdout]     | ---------------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  32 |     pub fn with_source(target_peg: f64, source: OracleSource) -> Self {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  46 |     pub async fn start_price_feed(oracle: Arc<PriceOracle>) {
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  73 |     pub async fn fetch_price(&self) -> Result<f64, Box<dyn std::error::Error + Send + Sync>> {
[INFO] [stdout]     |                  ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  82 |     async fn fetch_from_coingecko(&self) -> Result<f64, Box<dyn std::error::Error + Send + Sync>> {
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 103 |     async fn fetch_from_chainlink(&self) -> Result<f64, Box<dyn std::error::Error + Send + Sync>> {
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 107 |     async fn fetch_aggregated_price(
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 120 |     pub fn get_price_deviation(&self) -> f64 {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 125 |     pub fn needs_stabilization(&self, threshold: f64) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 130 |     pub fn get_stabilization_direction(&self) -> StabilizationDirection {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 142 |     pub fn calculate_mint_amount(&self, total_supply: f64) -> f64 {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 152 |     pub fn calculate_burn_amount(&self, total_supply: f64) -> f64 {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `StabilizationDirection` is never used
[INFO] [stdout]    --> src/oracle.rs:164:10
[INFO] [stdout]     |
[INFO] [stdout] 164 | pub enum StabilizationDirection {
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `StabilityPool` is never constructed
[INFO] [stdout]    --> src/oracle.rs:170:12
[INFO] [stdout]     |
[INFO] [stdout] 170 | pub struct StabilityPool {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `can_mint`, `mint`, and `burn` are never used
[INFO] [stdout]    --> src/oracle.rs:177:12
[INFO] [stdout]     |
[INFO] [stdout] 176 | impl StabilityPool {
[INFO] [stdout]     | ------------------ associated items in this implementation
[INFO] [stdout] 177 |     pub fn new(initial_weyra: f64, initial_collateral: f64) -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 185 |     pub fn can_mint(&self, amount: f64, collateral_value: f64) -> bool {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 191 |     pub fn mint(&mut self, amount: f64, collateral_added: f64) -> Result<(), String> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 201 |     pub fn burn(&mut self, amount: f64) -> Result<f64, String> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `validate_chain` is never used
[INFO] [stdout]   --> src/proof_of_work.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout]  8 | impl ProofOfWork {
[INFO] [stdout]    | ---------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 18 |     pub fn validate_chain(&self, blocks: &[Block]) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `calculate_merkle_root` is never used
[INFO] [stdout]  --> src/utils.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn calculate_merkle_root(hashes: Vec<String>) -> String {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sha256_hash` is never used
[INFO] [stdout]   --> src/utils.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub fn sha256_hash(data: &str) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_balance` is never used
[INFO] [stdout]    --> src/wallet.rs:206:12
[INFO] [stdout]     |
[INFO] [stdout] 180 | impl UTXOPool {
[INFO] [stdout]     | ------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 206 |     pub fn get_balance(&self, address: &str) -> f64 {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 58s
[INFO] running `Command { std: "docker" "inspect" "31cb4e0dd60d46b9ac7e3cfa1401eff52f8513e7b0908cffb4ee1eeca85e6a98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31cb4e0dd60d46b9ac7e3cfa1401eff52f8513e7b0908cffb4ee1eeca85e6a98", kill_on_drop: false }`
[INFO] [stdout] 31cb4e0dd60d46b9ac7e3cfa1401eff52f8513e7b0908cffb4ee1eeca85e6a98
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_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" "+cced03bfd61a304243a34504618ecec86c17063f" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 400d9fae2255ba80320759d11acb7e80738e13e2c2020790d9ad136f92b72d1c
[INFO] running `Command { std: "docker" "start" "-a" "400d9fae2255ba80320759d11acb7e80738e13e2c2020790d9ad136f92b72d1c", kill_on_drop: false }`
[INFO] [stderr]    Compiling weyra v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated function `base64::encode`: Use Engine::encode
[INFO] [stdout]   --> src/wallet.rs:82:17
[INFO] [stdout]    |
[INFO] [stdout] 82 |         base64::encode(signature)
[INFO] [stdout]    |                 ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `base64::decode`: Use Engine::decode
[INFO] [stdout]   --> src/wallet.rs:91:39
[INFO] [stdout]    |
[INFO] [stdout] 91 |         let signature = match base64::decode(signature_str) {
[INFO] [stdout]    |                                       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:29:13
[INFO] [stdout]    |
[INFO] [stdout] 29 |         let mut node = BlockchainNode::new(4, 100.0);
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `verify_transaction` is never used
[INFO] [stdout]   --> src/block.rs:74:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl Block {
[INFO] [stdout]    | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 74 |     pub fn verify_transaction(&self, tx_id: &str) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `is_chain_valid` and `verify_transaction_in_block` are never used
[INFO] [stdout]    --> src/blockchain.rs:283:12
[INFO] [stdout]     |
[INFO] [stdout]  17 | impl Blockchain {
[INFO] [stdout]     | --------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 283 |     pub fn is_chain_valid(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 310 |     pub fn verify_transaction_in_block(&self, block_index: usize, tx_id: &str) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `generate_proof`, `find_proof`, and `verify_proof` are never used
[INFO] [stdout]    --> src/merkle_tree.rs:93:12
[INFO] [stdout]     |
[INFO] [stdout]  17 | impl MerkleTree {
[INFO] [stdout]     | --------------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  93 |     pub fn generate_proof(&self, leaf_hash: &str) -> Option<Vec<(String, bool)>> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 106 |     fn find_proof(
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 137 |     pub fn verify_proof(leaf_hash: &str, proof: Vec<(String, bool)>, root_hash: &str) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `peer_id` and `event_sender` are never read
[INFO] [stdout]   --> src/network.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 65 | pub struct P2PNetwork {
[INFO] [stdout]    |            ---------- fields in this struct
[INFO] [stdout] 66 |     pub swarm: Swarm<BlockchainBehaviour>,
[INFO] [stdout] 67 |     pub peer_id: PeerId,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 70 |     pub event_sender: mpsc::UnboundedSender<NetworkEvent>,
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `NewPeer`, `PeerDisconnected`, `NewBlock`, `NewTransaction`, and `SyncRequest` are never constructed
[INFO] [stdout]   --> src/network.rs:75:5
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub enum NetworkEvent {
[INFO] [stdout]    |          ------------ variants in this enum
[INFO] [stdout] 75 |     NewPeer(PeerId),
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 76 |     PeerDisconnected(PeerId),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 77 |     NewBlock(Block),
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 78 |     NewTransaction(UTXOTransaction),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 79 |     SyncRequest(PeerId, u64, u64),
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `NetworkEvent` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `process_events` is never used
[INFO] [stdout]    --> src/node.rs:145:18
[INFO] [stdout]     |
[INFO] [stdout]  17 | impl BlockchainNode {
[INFO] [stdout]     | ------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 145 |     pub async fn process_events(&mut self) {
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `source` and `last_update` are never read
[INFO] [stdout]   --> src/oracle.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout]  7 | pub struct PriceOracle {
[INFO] [stdout]    |            ----------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 10 |     pub source: OracleSource,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 11 |     pub last_update: Arc<Mutex<i64>>,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `PriceOracle` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Chainlink`, `Manual`, and `Aggregated` are never constructed
[INFO] [stdout]   --> src/oracle.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub enum OracleSource {
[INFO] [stdout]    |          ------------ variants in this enum
[INFO] [stdout] 16 |     CoinGecko,
[INFO] [stdout] 17 |     Chainlink,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 18 |     Manual(f64),
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 19 |     Aggregated,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `OracleSource` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/oracle.rs:32:12
[INFO] [stdout]     |
[INFO] [stdout]  22 | impl PriceOracle {
[INFO] [stdout]     | ---------------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  32 |     pub fn with_source(target_peg: f64, source: OracleSource) -> Self {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  46 |     pub async fn start_price_feed(oracle: Arc<PriceOracle>) {
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  73 |     pub async fn fetch_price(&self) -> Result<f64, Box<dyn std::error::Error + Send + Sync>> {
[INFO] [stdout]     |                  ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  82 |     async fn fetch_from_coingecko(&self) -> Result<f64, Box<dyn std::error::Error + Send + Sync>> {
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 103 |     async fn fetch_from_chainlink(&self) -> Result<f64, Box<dyn std::error::Error + Send + Sync>> {
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 107 |     async fn fetch_aggregated_price(
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 142 |     pub fn calculate_mint_amount(&self, total_supply: f64) -> f64 {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 152 |     pub fn calculate_burn_amount(&self, total_supply: f64) -> f64 {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `validate_chain` is never used
[INFO] [stdout]   --> src/proof_of_work.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout]  8 | impl ProofOfWork {
[INFO] [stdout]    | ---------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 18 |     pub fn validate_chain(&self, blocks: &[Block]) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `calculate_merkle_root` is never used
[INFO] [stdout]  --> src/utils.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn calculate_merkle_root(hashes: Vec<String>) -> String {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sha256_hash` is never used
[INFO] [stdout]   --> src/utils.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub fn sha256_hash(data: &str) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_balance` is never used
[INFO] [stdout]    --> src/wallet.rs:206:12
[INFO] [stdout]     |
[INFO] [stdout] 180 | impl UTXOPool {
[INFO] [stdout]     | ------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 206 |     pub fn get_balance(&self, address: &str) -> f64 {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 6.28s
[INFO] running `Command { std: "docker" "inspect" "400d9fae2255ba80320759d11acb7e80738e13e2c2020790d9ad136f92b72d1c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "400d9fae2255ba80320759d11acb7e80738e13e2c2020790d9ad136f92b72d1c", kill_on_drop: false }`
[INFO] [stdout] 400d9fae2255ba80320759d11acb7e80738e13e2c2020790d9ad136f92b72d1c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_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" "+cced03bfd61a304243a34504618ecec86c17063f" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 58e3a4502c6fa1d6e7c7bfed397cc27d25c5f7779f765648f3b3f3c8b89787ca
[INFO] running `Command { std: "docker" "start" "-a" "58e3a4502c6fa1d6e7c7bfed397cc27d25c5f7779f765648f3b3f3c8b89787ca", kill_on_drop: false }`
[INFO] [stderr] warning: use of deprecated function `base64::encode`: Use Engine::encode
[INFO] [stderr]   --> src/wallet.rs:82:17
[INFO] [stderr]    |
[INFO] [stderr] 82 |         base64::encode(signature)
[INFO] [stderr]    |                 ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated function `base64::decode`: Use Engine::decode
[INFO] [stderr]   --> src/wallet.rs:91:39
[INFO] [stderr]    |
[INFO] [stderr] 91 |         let signature = match base64::decode(signature_str) {
[INFO] [stderr]    |                                       ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:29:13
[INFO] [stderr]    |
[INFO] [stderr] 29 |         let mut node = BlockchainNode::new(4, 100.0);
[INFO] [stderr]    |             ----^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method `verify_transaction` is never used
[INFO] [stderr]   --> src/block.rs:74:12
[INFO] [stderr]    |
[INFO] [stderr] 19 | impl Block {
[INFO] [stderr]    | ---------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 74 |     pub fn verify_transaction(&self, tx_id: &str) -> bool {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: methods `is_chain_valid` and `verify_transaction_in_block` are never used
[INFO] [stderr]    --> src/blockchain.rs:283:12
[INFO] [stderr]     |
[INFO] [stderr]  17 | impl Blockchain {
[INFO] [stderr]     | --------------- methods in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 283 |     pub fn is_chain_valid(&self) -> bool {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 310 |     pub fn verify_transaction_in_block(&self, block_index: usize, tx_id: &str) -> bool {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `generate_proof`, `find_proof`, and `verify_proof` are never used
[INFO] [stderr]    --> src/merkle_tree.rs:93:12
[INFO] [stderr]     |
[INFO] [stderr]  17 | impl MerkleTree {
[INFO] [stderr]     | --------------- associated items in this implementation
[INFO] [stderr] ...
[INFO] [stderr]  93 |     pub fn generate_proof(&self, leaf_hash: &str) -> Option<Vec<(String, bool)>> {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 106 |     fn find_proof(
[INFO] [stderr]     |        ^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 137 |     pub fn verify_proof(leaf_hash: &str, proof: Vec<(String, bool)>, root_hash: &str) -> bool {
[INFO] [stderr]     |            ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: fields `peer_id` and `event_sender` are never read
[INFO] [stderr]   --> src/network.rs:67:9
[INFO] [stderr]    |
[INFO] [stderr] 65 | pub struct P2PNetwork {
[INFO] [stderr]    |            ---------- fields in this struct
[INFO] [stderr] 66 |     pub swarm: Swarm<BlockchainBehaviour>,
[INFO] [stderr] 67 |     pub peer_id: PeerId,
[INFO] [stderr]    |         ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 70 |     pub event_sender: mpsc::UnboundedSender<NetworkEvent>,
[INFO] [stderr]    |         ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variants `NewPeer`, `PeerDisconnected`, `NewBlock`, `NewTransaction`, and `SyncRequest` are never constructed
[INFO] [stderr]   --> src/network.rs:75:5
[INFO] [stderr]    |
[INFO] [stderr] 74 | pub enum NetworkEvent {
[INFO] [stderr]    |          ------------ variants in this enum
[INFO] [stderr] 75 |     NewPeer(PeerId),
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 76 |     PeerDisconnected(PeerId),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 77 |     NewBlock(Block),
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 78 |     NewTransaction(UTXOTransaction),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 79 |     SyncRequest(PeerId, u64, u64),
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `NetworkEvent` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: method `process_events` is never used
[INFO] [stderr]    --> src/node.rs:145:18
[INFO] [stderr]     |
[INFO] [stderr]  17 | impl BlockchainNode {
[INFO] [stderr]     | ------------------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 145 |     pub async fn process_events(&mut self) {
[INFO] [stderr]     |                  ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: fields `source` and `last_update` are never read
[INFO] [stderr]   --> src/oracle.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr]  7 | pub struct PriceOracle {
[INFO] [stderr]    |            ----------- fields in this struct
[INFO] [stderr] ...
[INFO] [stderr] 10 |     pub source: OracleSource,
[INFO] [stderr]    |         ^^^^^^
[INFO] [stderr] 11 |     pub last_update: Arc<Mutex<i64>>,
[INFO] [stderr]    |         ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `PriceOracle` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: variants `Chainlink`, `Manual`, and `Aggregated` are never constructed
[INFO] [stderr]   --> src/oracle.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 15 | pub enum OracleSource {
[INFO] [stderr]    |          ------------ variants in this enum
[INFO] [stderr] 16 |     CoinGecko,
[INFO] [stderr] 17 |     Chainlink,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 18 |     Manual(f64),
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 19 |     Aggregated,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `OracleSource` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: multiple associated items are never used
[INFO] [stderr]    --> src/oracle.rs:32:12
[INFO] [stderr]     |
[INFO] [stderr]  22 | impl PriceOracle {
[INFO] [stderr]     | ---------------- associated items in this implementation
[INFO] [stderr] ...
[INFO] [stderr]  32 |     pub fn with_source(target_peg: f64, source: OracleSource) -> Self {
[INFO] [stderr]     |            ^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr]  46 |     pub async fn start_price_feed(oracle: Arc<PriceOracle>) {
[INFO] [stderr]     |                  ^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr]  73 |     pub async fn fetch_price(&self) -> Result<f64, Box<dyn std::error::Error + Send + Sync>> {
[INFO] [stderr]     |                  ^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr]  82 |     async fn fetch_from_coingecko(&self) -> Result<f64, Box<dyn std::error::Error + Send + Sync>> {
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 103 |     async fn fetch_from_chainlink(&self) -> Result<f64, Box<dyn std::error::Error + Send + Sync>> {
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 107 |     async fn fetch_aggregated_price(
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 142 |     pub fn calculate_mint_amount(&self, total_supply: f64) -> f64 {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 152 |     pub fn calculate_burn_amount(&self, total_supply: f64) -> f64 {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `validate_chain` is never used
[INFO] [stderr]   --> src/proof_of_work.rs:18:12
[INFO] [stderr]    |
[INFO] [stderr]  8 | impl ProofOfWork {
[INFO] [stderr]    | ---------------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 18 |     pub fn validate_chain(&self, blocks: &[Block]) -> bool {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `calculate_merkle_root` is never used
[INFO] [stderr]  --> src/utils.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn calculate_merkle_root(hashes: Vec<String>) -> String {
[INFO] [stderr]   |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `sha256_hash` is never used
[INFO] [stderr]   --> src/utils.rs:31:8
[INFO] [stderr]    |
[INFO] [stderr] 31 | pub fn sha256_hash(data: &str) -> String {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `get_balance` is never used
[INFO] [stderr]    --> src/wallet.rs:206:12
[INFO] [stderr]     |
[INFO] [stderr] 180 | impl UTXOPool {
[INFO] [stderr]     | ------------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 206 |     pub fn get_balance(&self, address: &str) -> f64 {
[INFO] [stderr]     |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `weyra` (bin "weyra" test) generated 16 warnings (run `cargo fix --bin "weyra" -p weyra --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.52s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/weyra-e21eef655fb1df6f)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test oracle::tests::test_price_oracle ... ok
[INFO] [stdout] test oracle::tests::test_stabilization_direction ... ok
[INFO] [stdout] test oracle::tests::test_stability_pool ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "58e3a4502c6fa1d6e7c7bfed397cc27d25c5f7779f765648f3b3f3c8b89787ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58e3a4502c6fa1d6e7c7bfed397cc27d25c5f7779f765648f3b3f3c8b89787ca", kill_on_drop: false }`
[INFO] [stdout] 58e3a4502c6fa1d6e7c7bfed397cc27d25c5f7779f765648f3b3f3c8b89787ca
