[INFO] cloning repository https://github.com/xiuxiua8/blockchainRUST
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/xiuxiua8/blockchainRUST" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxiuxiua8%2FblockchainRUST", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxiuxiua8%2FblockchainRUST'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 652861eaae16b5548d6798ab1315ac0a786b934d
[INFO] testing xiuxiua8/blockchainRUST against 1.86.0 for beta-1.87-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxiuxiua8%2FblockchainRUST" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/xiuxiua8/blockchainRUST on toolchain 1.86.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.86.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/xiuxiua8/blockchainRUST
[INFO] finished tweaking git repo https://github.com/xiuxiua8/blockchainRUST
[INFO] tweaked toml for git repo https://github.com/xiuxiua8/blockchainRUST written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/xiuxiua8/blockchainRUST 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" "+1.86.0" "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-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+1.86.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 115672d4ad163a270bb476e4b32e279202b496da9bbb3ce5671fe2d993909c5d
[INFO] running `Command { std: "docker" "start" "-a" "115672d4ad163a270bb476e4b32e279202b496da9bbb3ce5671fe2d993909c5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "115672d4ad163a270bb476e4b32e279202b496da9bbb3ce5671fe2d993909c5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "115672d4ad163a270bb476e4b32e279202b496da9bbb3ce5671fe2d993909c5d", kill_on_drop: false }`
[INFO] [stdout] 115672d4ad163a270bb476e4b32e279202b496da9bbb3ce5671fe2d993909c5d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+1.86.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c81d2de0d088df2752657fb59ec0e4a20cbdccd33b2016a354a50628525326e1
[INFO] running `Command { std: "docker" "start" "-a" "c81d2de0d088df2752657fb59ec0e4a20cbdccd33b2016a354a50628525326e1", kill_on_drop: false }`
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[INFO] [stdout] warning: unused import: `Sha256`
[INFO] [stdout]  --> src/block.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | use sha2::{Sha256, Digest};
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Digest` and `Sha256`
[INFO] [stdout]  --> src/transaction.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | use sha2::{Sha256, Digest};
[INFO] [stdout]   |            ^^^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::path::Path`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::path::Path;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `libp2p::libp2p_swarm::SwarmBuilder`: Use the new `libp2p::SwarmBuilder` instead of `libp2p::swarm::SwarmBuilder` or create a `Swarm` directly via `Swarm::new`.
[INFO] [stdout]  --> src/network.rs:5:43
[INFO] [stdout]   |
[INFO] [stdout] 5 |     swarm::{NetworkBehaviour, SwarmEvent, SwarmBuilder},
[INFO] [stdout]   |                                           ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `libp2p::libp2p_swarm::SwarmBuilder`: Use the new `libp2p::SwarmBuilder` instead of `libp2p::swarm::SwarmBuilder` or create a `Swarm` directly via `Swarm::new`.
[INFO] [stdout]   --> src/network.rs:64:25
[INFO] [stdout]    |
[INFO] [stdout] 64 |         let mut swarm = SwarmBuilder::with_tokio_executor(
[INFO] [stdout]    |                         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `libp2p::development_transport`: Use `libp2p::SwarmBuilder` instead.
[INFO] [stdout]   --> src/network.rs:65:21
[INFO] [stdout]    |
[INFO] [stdout] 65 |             libp2p::development_transport(id_keys).await.unwrap(),
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::transport::Transport`
[INFO] [stdout]  --> src/network.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     core::transport::Transport,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rx`
[INFO] [stdout]   --> src/main.rs:28:18
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let (tx, mut rx) = mpsc::channel(100);
[INFO] [stdout]    |                  ^^ help: if this is intentional, prefix it with an underscore: `_rx`
[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]   --> src/main.rs:28:14
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let (tx, mut rx) = mpsc::channel(100);
[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: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:82:21
[INFO] [stdout]    |
[INFO] [stdout] 82 |                 let mut transactions = Vec::new();
[INFO] [stdout]    |                     ----^^^^^^^^^^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `load_from_file` is never used
[INFO] [stdout]   --> src/blockchain.rs:74:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl Blockchain {
[INFO] [stdout]    | --------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 74 |     pub fn load_from_file(filename: &str) -> Option<Self> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `public_key` is never read
[INFO] [stdout]   --> src/wallet.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 8  | pub struct Wallet {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 9  |     pub private_key: SecretKey,
[INFO] [stdout] 10 |     pub public_key: PublicKey,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/network.rs:16:14
[INFO] [stdout]    |
[INFO] [stdout] 16 |     NewBlock(Block),
[INFO] [stdout]    |     -------- ^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[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] 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] 16 -     NewBlock(Block),
[INFO] [stdout] 16 +     NewBlock(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/network.rs:17:20
[INFO] [stdout]    |
[INFO] [stdout] 17 |     NewTransaction(Transaction),
[INFO] [stdout]    |     -------------- ^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[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] 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] 17 -     NewTransaction(Transaction),
[INFO] [stdout] 17 +     NewTransaction(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `RequestBlocks` and `SendBlocks` are never constructed
[INFO] [stdout]   --> src/network.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub enum NetworkEvent {
[INFO] [stdout]    |          ------------ variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 18 |     RequestBlocks,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 19 |     SendBlocks(Vec<Block>),
[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: field `0` is never read
[INFO] [stdout]   --> src/network.rs:30:10
[INFO] [stdout]    |
[INFO] [stdout] 30 |     Ping(ping::Event),
[INFO] [stdout]    |     ---- ^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `OutEvent` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[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] 30 -     Ping(ping::Event),
[INFO] [stdout] 30 +     Ping(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `peers`, `event_sender`, and `event_receiver` are never read
[INFO] [stdout]   --> src/network.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub struct Network {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 40 |     peer_id: PeerId,
[INFO] [stdout] 41 |     peers: HashMap<PeerId, String>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 42 |     event_sender: mpsc::Sender<NetworkEvent>,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 43 |     event_receiver: mpsc::Receiver<NetworkEvent>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `broadcast_block`, `broadcast_transaction`, and `sync_chain` are never used
[INFO] [stdout]    --> src/network.rs:89:18
[INFO] [stdout]     |
[INFO] [stdout] 46  | impl Network {
[INFO] [stdout]     | ------------ methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 89  |     pub async fn broadcast_block(&self, block: Block) {
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 95  |     pub async fn broadcast_transaction(&self, transaction: Transaction) {
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 101 |     pub async fn sync_chain(&self, _blockchain: &Blockchain) {
[INFO] [stdout]     |                  ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 23s
[INFO] running `Command { std: "docker" "inspect" "c81d2de0d088df2752657fb59ec0e4a20cbdccd33b2016a354a50628525326e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c81d2de0d088df2752657fb59ec0e4a20cbdccd33b2016a354a50628525326e1", kill_on_drop: false }`
[INFO] [stdout] c81d2de0d088df2752657fb59ec0e4a20cbdccd33b2016a354a50628525326e1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+1.86.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 500704974bb332fdd330300b97c755ccc1251695be536fe4207fcb9ecdb05ebc
[INFO] running `Command { std: "docker" "start" "-a" "500704974bb332fdd330300b97c755ccc1251695be536fe4207fcb9ecdb05ebc", kill_on_drop: false }`
[INFO] [stderr]    Compiling blockchain_demo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Sha256`
[INFO] [stdout]  --> src/block.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | use sha2::{Sha256, Digest};
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Digest` and `Sha256`
[INFO] [stdout]  --> src/transaction.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | use sha2::{Sha256, Digest};
[INFO] [stdout]   |            ^^^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::path::Path`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::path::Path;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `libp2p::libp2p_swarm::SwarmBuilder`: Use the new `libp2p::SwarmBuilder` instead of `libp2p::swarm::SwarmBuilder` or create a `Swarm` directly via `Swarm::new`.
[INFO] [stdout]  --> src/network.rs:5:43
[INFO] [stdout]   |
[INFO] [stdout] 5 |     swarm::{NetworkBehaviour, SwarmEvent, SwarmBuilder},
[INFO] [stdout]   |                                           ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `libp2p::libp2p_swarm::SwarmBuilder`: Use the new `libp2p::SwarmBuilder` instead of `libp2p::swarm::SwarmBuilder` or create a `Swarm` directly via `Swarm::new`.
[INFO] [stdout]   --> src/network.rs:64:25
[INFO] [stdout]    |
[INFO] [stdout] 64 |         let mut swarm = SwarmBuilder::with_tokio_executor(
[INFO] [stdout]    |                         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `libp2p::development_transport`: Use `libp2p::SwarmBuilder` instead.
[INFO] [stdout]   --> src/network.rs:65:21
[INFO] [stdout]    |
[INFO] [stdout] 65 |             libp2p::development_transport(id_keys).await.unwrap(),
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::transport::Transport`
[INFO] [stdout]  --> src/network.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     core::transport::Transport,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rx`
[INFO] [stdout]   --> src/main.rs:28:18
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let (tx, mut rx) = mpsc::channel(100);
[INFO] [stdout]    |                  ^^ help: if this is intentional, prefix it with an underscore: `_rx`
[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]   --> src/main.rs:28:14
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let (tx, mut rx) = mpsc::channel(100);
[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: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:82:21
[INFO] [stdout]    |
[INFO] [stdout] 82 |                 let mut transactions = Vec::new();
[INFO] [stdout]    |                     ----^^^^^^^^^^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `load_from_file` is never used
[INFO] [stdout]   --> src/blockchain.rs:74:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl Blockchain {
[INFO] [stdout]    | --------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 74 |     pub fn load_from_file(filename: &str) -> Option<Self> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `public_key` is never read
[INFO] [stdout]   --> src/wallet.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 8  | pub struct Wallet {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 9  |     pub private_key: SecretKey,
[INFO] [stdout] 10 |     pub public_key: PublicKey,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/network.rs:16:14
[INFO] [stdout]    |
[INFO] [stdout] 16 |     NewBlock(Block),
[INFO] [stdout]    |     -------- ^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[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] 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] 16 -     NewBlock(Block),
[INFO] [stdout] 16 +     NewBlock(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/network.rs:17:20
[INFO] [stdout]    |
[INFO] [stdout] 17 |     NewTransaction(Transaction),
[INFO] [stdout]    |     -------------- ^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[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] 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] 17 -     NewTransaction(Transaction),
[INFO] [stdout] 17 +     NewTransaction(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `RequestBlocks` and `SendBlocks` are never constructed
[INFO] [stdout]   --> src/network.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub enum NetworkEvent {
[INFO] [stdout]    |          ------------ variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 18 |     RequestBlocks,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 19 |     SendBlocks(Vec<Block>),
[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: field `0` is never read
[INFO] [stdout]   --> src/network.rs:30:10
[INFO] [stdout]    |
[INFO] [stdout] 30 |     Ping(ping::Event),
[INFO] [stdout]    |     ---- ^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `OutEvent` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[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] 30 -     Ping(ping::Event),
[INFO] [stdout] 30 +     Ping(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `peers`, `event_sender`, and `event_receiver` are never read
[INFO] [stdout]   --> src/network.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub struct Network {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 40 |     peer_id: PeerId,
[INFO] [stdout] 41 |     peers: HashMap<PeerId, String>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 42 |     event_sender: mpsc::Sender<NetworkEvent>,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 43 |     event_receiver: mpsc::Receiver<NetworkEvent>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `broadcast_block`, `broadcast_transaction`, and `sync_chain` are never used
[INFO] [stdout]    --> src/network.rs:89:18
[INFO] [stdout]     |
[INFO] [stdout] 46  | impl Network {
[INFO] [stdout]     | ------------ methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 89  |     pub async fn broadcast_block(&self, block: Block) {
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 95  |     pub async fn broadcast_transaction(&self, transaction: Transaction) {
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 101 |     pub async fn sync_chain(&self, _blockchain: &Blockchain) {
[INFO] [stdout]     |                  ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.89s
[INFO] running `Command { std: "docker" "inspect" "500704974bb332fdd330300b97c755ccc1251695be536fe4207fcb9ecdb05ebc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "500704974bb332fdd330300b97c755ccc1251695be536fe4207fcb9ecdb05ebc", kill_on_drop: false }`
[INFO] [stdout] 500704974bb332fdd330300b97c755ccc1251695be536fe4207fcb9ecdb05ebc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+1.86.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9d6c305866e9beb6f0f9840736da1254705699764c32d7874723642bb0b25dde
[INFO] running `Command { std: "docker" "start" "-a" "9d6c305866e9beb6f0f9840736da1254705699764c32d7874723642bb0b25dde", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `Sha256`
[INFO] [stderr]  --> src/block.rs:3:12
[INFO] [stderr]   |
[INFO] [stderr] 3 | use sha2::{Sha256, Digest};
[INFO] [stderr]   |            ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Digest` and `Sha256`
[INFO] [stderr]  --> src/transaction.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 | use sha2::{Sha256, Digest};
[INFO] [stderr]   |            ^^^^^^  ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::path::Path`
[INFO] [stderr]  --> src/main.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::path::Path;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated struct `libp2p::libp2p_swarm::SwarmBuilder`: Use the new `libp2p::SwarmBuilder` instead of `libp2p::swarm::SwarmBuilder` or create a `Swarm` directly via `Swarm::new`.
[INFO] [stderr]  --> src/network.rs:5:43
[INFO] [stderr]   |
[INFO] [stderr] 5 |     swarm::{NetworkBehaviour, SwarmEvent, SwarmBuilder},
[INFO] [stderr]   |                                           ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated struct `libp2p::libp2p_swarm::SwarmBuilder`: Use the new `libp2p::SwarmBuilder` instead of `libp2p::swarm::SwarmBuilder` or create a `Swarm` directly via `Swarm::new`.
[INFO] [stderr]   --> src/network.rs:64:25
[INFO] [stderr]    |
[INFO] [stderr] 64 |         let mut swarm = SwarmBuilder::with_tokio_executor(
[INFO] [stderr]    |                         ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated function `libp2p::development_transport`: Use `libp2p::SwarmBuilder` instead.
[INFO] [stderr]   --> src/network.rs:65:21
[INFO] [stderr]    |
[INFO] [stderr] 65 |             libp2p::development_transport(id_keys).await.unwrap(),
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `core::transport::Transport`
[INFO] [stderr]  --> src/network.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 |     core::transport::Transport,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rx`
[INFO] [stderr]   --> src/main.rs:28:18
[INFO] [stderr]    |
[INFO] [stderr] 28 |     let (tx, mut rx) = mpsc::channel(100);
[INFO] [stderr]    |                  ^^ help: if this is intentional, prefix it with an underscore: `_rx`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:28:14
[INFO] [stderr]    |
[INFO] [stderr] 28 |     let (tx, mut rx) = mpsc::channel(100);
[INFO] [stderr]    |              ----^^
[INFO] [stderr]    |              |
[INFO] [stderr]    |              help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:82:21
[INFO] [stderr]    |
[INFO] [stderr] 82 |                 let mut transactions = Vec::new();
[INFO] [stderr]    |                     ----^^^^^^^^^^^^
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `load_from_file` is never used
[INFO] [stderr]   --> src/blockchain.rs:74:12
[INFO] [stderr]    |
[INFO] [stderr] 13 | impl Blockchain {
[INFO] [stderr]    | --------------- associated function in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 74 |     pub fn load_from_file(filename: &str) -> Option<Self> {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `public_key` is never read
[INFO] [stderr]   --> src/wallet.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 8  | pub struct Wallet {
[INFO] [stderr]    |            ------ field in this struct
[INFO] [stderr] 9  |     pub private_key: SecretKey,
[INFO] [stderr] 10 |     pub public_key: PublicKey,
[INFO] [stderr]    |         ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `0` is never read
[INFO] [stderr]   --> src/network.rs:16:14
[INFO] [stderr]    |
[INFO] [stderr] 16 |     NewBlock(Block),
[INFO] [stderr]    |     -------- ^^^^^
[INFO] [stderr]    |     |
[INFO] [stderr]    |     field in this variant
[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] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stderr]    |
[INFO] [stderr] 16 -     NewBlock(Block),
[INFO] [stderr] 16 +     NewBlock(()),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: field `0` is never read
[INFO] [stderr]   --> src/network.rs:17:20
[INFO] [stderr]    |
[INFO] [stderr] 17 |     NewTransaction(Transaction),
[INFO] [stderr]    |     -------------- ^^^^^^^^^^^
[INFO] [stderr]    |     |
[INFO] [stderr]    |     field in this variant
[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] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stderr]    |
[INFO] [stderr] 17 -     NewTransaction(Transaction),
[INFO] [stderr] 17 +     NewTransaction(()),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: variants `RequestBlocks` and `SendBlocks` are never constructed
[INFO] [stderr]   --> src/network.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 15 | pub enum NetworkEvent {
[INFO] [stderr]    |          ------------ variants in this enum
[INFO] [stderr] ...
[INFO] [stderr] 18 |     RequestBlocks,
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 19 |     SendBlocks(Vec<Block>),
[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: field `0` is never read
[INFO] [stderr]   --> src/network.rs:30:10
[INFO] [stderr]    |
[INFO] [stderr] 30 |     Ping(ping::Event),
[INFO] [stderr]    |     ---- ^^^^^^^^^^^
[INFO] [stderr]    |     |
[INFO] [stderr]    |     field in this variant
[INFO] [stderr]    |
[INFO] [stderr]    = note: `OutEvent` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stderr]    |
[INFO] [stderr] 30 -     Ping(ping::Event),
[INFO] [stderr] 30 +     Ping(()),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: fields `peers`, `event_sender`, and `event_receiver` are never read
[INFO] [stderr]   --> src/network.rs:41:5
[INFO] [stderr]    |
[INFO] [stderr] 39 | pub struct Network {
[INFO] [stderr]    |            ------- fields in this struct
[INFO] [stderr] 40 |     peer_id: PeerId,
[INFO] [stderr] 41 |     peers: HashMap<PeerId, String>,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 42 |     event_sender: mpsc::Sender<NetworkEvent>,
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr] 43 |     event_receiver: mpsc::Receiver<NetworkEvent>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: methods `broadcast_block`, `broadcast_transaction`, and `sync_chain` are never used
[INFO] [stderr]    --> src/network.rs:89:18
[INFO] [stderr]     |
[INFO] [stderr] 46  | impl Network {
[INFO] [stderr]     | ------------ methods in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 89  |     pub async fn broadcast_block(&self, block: Block) {
[INFO] [stderr]     |                  ^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 95  |     pub async fn broadcast_transaction(&self, transaction: Transaction) {
[INFO] [stderr]     |                  ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 101 |     pub async fn sync_chain(&self, _blockchain: &Blockchain) {
[INFO] [stderr]     |                  ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `blockchain_demo` (bin "blockchain_demo" test) generated 18 warnings (run `cargo fix --bin "blockchain_demo" --tests` to apply 5 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.31s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/blockchain_demo-9cbd776186c23cc2)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "9d6c305866e9beb6f0f9840736da1254705699764c32d7874723642bb0b25dde", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d6c305866e9beb6f0f9840736da1254705699764c32d7874723642bb0b25dde", kill_on_drop: false }`
[INFO] [stdout] 9d6c305866e9beb6f0f9840736da1254705699764c32d7874723642bb0b25dde
