[INFO] cloning repository https://github.com/0xShay/rust_blockchain
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/0xShay/rust_blockchain" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0xShay%2Frust_blockchain", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0xShay%2Frust_blockchain'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] db35e14f889d77ec0fb2883e7827a8ac91ce1ede
[INFO] building 0xShay/rust_blockchain against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0xShay%2Frust_blockchain" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/0xShay/rust_blockchain
[INFO] finished tweaking git repo https://github.com/0xShay/rust_blockchain
[INFO] tweaked toml for git repo https://github.com/0xShay/rust_blockchain written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/0xShay/rust_blockchain on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/0xShay/rust_blockchain 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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded parking_lot v0.12.4
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[INFO] [stderr]   Downloaded errno v0.3.13
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[INFO] [stderr]   Downloaded deranged v0.4.0
[INFO] [stderr]   Downloaded time-macros v0.2.22
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[INFO] [stderr]   Downloaded wasi v0.11.1+wasi-snapshot-preview1
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[INFO] [stderr]   Downloaded proc-macro2 v1.0.95
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[INFO] [stderr]   Downloaded sqlite3-src v0.5.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e3f3112463a35f076043d1fbe707574f4710ea8315ea1ff0167753338ddcb3fa
[INFO] running `Command { std: "docker" "start" "-a" "e3f3112463a35f076043d1fbe707574f4710ea8315ea1ff0167753338ddcb3fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e3f3112463a35f076043d1fbe707574f4710ea8315ea1ff0167753338ddcb3fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3f3112463a35f076043d1fbe707574f4710ea8315ea1ff0167753338ddcb3fa", kill_on_drop: false }`
[INFO] [stdout] e3f3112463a35f076043d1fbe707574f4710ea8315ea1ff0167753338ddcb3fa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3cff0f79678477f628e1a287032edcb2882fc1c3a11122b8b76daca159b6485f
[INFO] running `Command { std: "docker" "start" "-a" "3cff0f79678477f628e1a287032edcb2882fc1c3a11122b8b76daca159b6485f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling unicode-ident v1.0.18
[INFO] [stderr]    Compiling libc v0.2.174
[INFO] [stderr]    Compiling version_check v0.9.5
[INFO] [stderr]    Compiling cfg-if v1.0.1
[INFO] [stderr]    Compiling autocfg v1.5.0
[INFO] [stderr]    Compiling pin-project-lite v0.2.16
[INFO] [stderr]    Compiling smallvec v1.15.1
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling bytes v1.10.1
[INFO] [stderr]    Compiling itoa v1.0.15
[INFO] [stderr]    Compiling shlex v1.3.0
[INFO] [stderr]    Compiling once_cell v1.21.3
[INFO] [stderr]    Compiling parking_lot_core v0.9.11
[INFO] [stderr]    Compiling pkg-config v0.3.32
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling scopeguard v1.2.0
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling equivalent v1.0.2
[INFO] [stderr]    Compiling cc v1.2.27
[INFO] [stderr]    Compiling futures-core v0.3.31
[INFO] [stderr]    Compiling memchr v2.7.5
[INFO] [stderr]    Compiling hashbrown v0.15.4
[INFO] [stderr]    Compiling typenum v1.18.0
[INFO] [stderr]    Compiling const-oid v0.9.6
[INFO] [stderr]    Compiling yansi v1.0.1
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[INFO] [stderr]    Compiling httparse v1.10.1
[INFO] [stderr]    Compiling tracing-core v0.1.34
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[INFO] [stderr]    Compiling proc-macro2-diagnostics v0.10.1
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[INFO] [stderr]    Compiling try-lock v0.2.5
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[INFO] [stderr]    Compiling serde_spanned v0.6.9
[INFO] [stderr]    Compiling serde_urlencoded v0.7.1
[INFO] [stderr]    Compiling ubyte v0.10.4
[INFO] [stderr]    Compiling tokio-util v0.7.15
[INFO] [stderr]    Compiling tokio-native-tls v0.3.1
[INFO] [stderr]    Compiling tokio-stream v0.1.17
[INFO] [stderr]    Compiling sha256 v1.6.0
[INFO] [stderr]    Compiling h2 v0.3.26
[INFO] [stderr]    Compiling toml_edit v0.22.27
[INFO] [stderr]    Compiling rsa v0.9.8
[INFO] [stderr]    Compiling toml v0.8.23
[INFO] [stderr]    Compiling hyper-tls v0.5.0
[INFO] [stderr]    Compiling reqwest v0.11.27
[INFO] [stderr]    Compiling rust_blockchain v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `IpAddr`, `Ipv4Addr`, `Ipv6Addr`, and `SocketAddrV4`
[INFO] [stdout]  --> src/main.rs:3:16
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::net::{IpAddr, Ipv4Addr, Ipv6Addr, SocketAddr, SocketAddrV4};
[INFO] [stdout]   |                ^^^^^^  ^^^^^^^^  ^^^^^^^^              ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::str::FromStr`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::str::FromStr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Signature`, `Signer`, `SigningKey`, `Verifier`, and `VerifyingKey`
[INFO] [stdout]  --> src/main.rs:5:21
[INFO] [stdout]   |
[INFO] [stdout] 5 | use ed25519_dalek::{Signature, Signer, SigningKey, Verifier, VerifyingKey};
[INFO] [stdout]   |                     ^^^^^^^^^  ^^^^^^  ^^^^^^^^^^  ^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Deserialize` and `Serialize`
[INFO] [stdout]  --> src/main.rs:8:13
[INFO] [stdout]   |
[INFO] [stdout] 8 | use serde::{Deserialize, Serialize};
[INFO] [stdout]   |             ^^^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde_json::Result`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use serde_json::Result;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Signer`
[INFO] [stdout]  --> src/account_utils.rs:2:32
[INFO] [stdout]   |
[INFO] [stdout] 2 | use ed25519_dalek::{Signature, Signer, SigningKey, VerifyingKey};
[INFO] [stdout]   |                                ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `IpAddr`
[INFO] [stdout]  --> src/peers.rs:5:16
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::net::{IpAddr, SocketAddr};
[INFO] [stdout]   |                ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::str::FromStr`
[INFO] [stdout]  --> src/peers.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::str::FromStr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::sync::OnceCell`
[INFO] [stdout]  --> src/db_utils.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use tokio::sync::OnceCell;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/peers.rs:39:13
[INFO] [stdout]    |
[INFO] [stdout] 39 |         let mut new_known_peers: Vec<SocketAddr> = Vec::new();
[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: variable does not need to be mutable
[INFO] [stdout]   --> src/peers.rs:46:20
[INFO] [stdout]    |
[INFO] [stdout] 46 |                 Ok(mut response) => {
[INFO] [stdout]    |                    ----^^^^^^^^
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `is_genesis`
[INFO] [stdout]    --> src/block_utils.rs:113:13
[INFO] [stdout]     |
[INFO] [stdout] 113 |         let is_genesis = block.index == 0;
[INFO] [stdout]     |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_is_genesis`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `remote_addr`
[INFO] [stdout]   --> src/main.rs:50:14
[INFO] [stdout]    |
[INFO] [stdout] 50 | fn get_peers(remote_addr: SocketAddr) -> status::Custom<content::RawJson<String>> {
[INFO] [stdout]    |              ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_remote_addr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let mut peers = peers::Peers::new();
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `DIFFICULTY` is never used
[INFO] [stdout]  --> src/block_utils.rs:8:7
[INFO] [stdout]   |
[INFO] [stdout] 8 | const DIFFICULTY: usize = 8; // number of zeros needed to prefix hash (bits)
[INFO] [stdout]   |       ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `generate_priv_key` is never used
[INFO] [stdout]  --> src/account_utils.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn generate_priv_key() -> SigningKey {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `generate_pub_key` is never used
[INFO] [stdout]   --> src/account_utils.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn generate_pub_key(private_key: &SigningKey) -> VerifyingKey {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `priv_key_to_hex` is never used
[INFO] [stdout]   --> src/account_utils.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn priv_key_to_hex(private_key: &SigningKey) -> String { hex::encode(private_key.to_bytes()) }
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `pub_key_to_hex` is never used
[INFO] [stdout]   --> src/account_utils.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn pub_key_to_hex(pub_key: &VerifyingKey) -> String { hex::encode(pub_key.to_bytes()) }
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `signature_to_hex` is never used
[INFO] [stdout]   --> src/account_utils.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub fn signature_to_hex(signature: &Signature) -> String { hex::encode(signature.to_bytes()) }
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `priv_key_from_hex` is never used
[INFO] [stdout]   --> src/account_utils.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub fn priv_key_from_hex(hex_str: &str) -> Result<SigningKey, Box<dyn std::error::Error>> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `pub_key_from_hex` is never used
[INFO] [stdout]   --> src/account_utils.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub fn pub_key_from_hex(hex_str: &str) -> Result<VerifyingKey, Box<dyn std::error::Error>> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `signature_from_hex` is never used
[INFO] [stdout]   --> src/account_utils.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub fn signature_from_hex(hex_str: &str) -> Result<Signature, Box<dyn std::error::Error>> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `from_json`, `get_known_peers`, and `remove_ip` are never used
[INFO] [stdout]   --> src/peers.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl Peers {
[INFO] [stdout]    | ---------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 26 |     pub fn from_json(json: &str) -> Vec<SocketAddr> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 34 |     pub fn get_known_peers(&mut self) -> Vec<SocketAddr> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 91 |     pub fn remove_ip(&mut self, ip_addr: SocketAddr) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:61:21
[INFO] [stdout]    |
[INFO] [stdout] 61 |                     db_utils::add_block(Block::add_acc_diff_to_block(block));
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 61 |                     let _ = db_utils::add_block(Block::add_acc_diff_to_block(block));
[INFO] [stdout]    |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:86:5
[INFO] [stdout]    |
[INFO] [stdout] 86 |     db_utils::create_tables();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 86 |     let _ = db_utils::create_tables();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:111:5
[INFO] [stdout]     |
[INFO] [stdout] 111 |     db_utils::add_block(genesis);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 111 |     let _ = db_utils::add_block(genesis);
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/db_utils.rs:49:5
[INFO] [stdout]    |
[INFO] [stdout] 49 |     statement.next();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 49 |     let _ = statement.next();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 47s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: num-bigint-dig v0.8.4
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "3cff0f79678477f628e1a287032edcb2882fc1c3a11122b8b76daca159b6485f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3cff0f79678477f628e1a287032edcb2882fc1c3a11122b8b76daca159b6485f", kill_on_drop: false }`
[INFO] [stdout] 3cff0f79678477f628e1a287032edcb2882fc1c3a11122b8b76daca159b6485f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2554e7dd37aa0d14641c3cd68290c9d0dab06733eeb5f1414b10342867b734ca
[INFO] running `Command { std: "docker" "start" "-a" "2554e7dd37aa0d14641c3cd68290c9d0dab06733eeb5f1414b10342867b734ca", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_blockchain v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `IpAddr`, `Ipv4Addr`, `Ipv6Addr`, and `SocketAddrV4`
[INFO] [stdout]  --> src/main.rs:3:16
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::net::{IpAddr, Ipv4Addr, Ipv6Addr, SocketAddr, SocketAddrV4};
[INFO] [stdout]   |                ^^^^^^  ^^^^^^^^  ^^^^^^^^              ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::str::FromStr`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::str::FromStr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Signature`, `Signer`, `SigningKey`, `Verifier`, and `VerifyingKey`
[INFO] [stdout]  --> src/main.rs:5:21
[INFO] [stdout]   |
[INFO] [stdout] 5 | use ed25519_dalek::{Signature, Signer, SigningKey, Verifier, VerifyingKey};
[INFO] [stdout]   |                     ^^^^^^^^^  ^^^^^^  ^^^^^^^^^^  ^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Deserialize` and `Serialize`
[INFO] [stdout]  --> src/main.rs:8:13
[INFO] [stdout]   |
[INFO] [stdout] 8 | use serde::{Deserialize, Serialize};
[INFO] [stdout]   |             ^^^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde_json::Result`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use serde_json::Result;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Signer`
[INFO] [stdout]  --> src/account_utils.rs:2:32
[INFO] [stdout]   |
[INFO] [stdout] 2 | use ed25519_dalek::{Signature, Signer, SigningKey, VerifyingKey};
[INFO] [stdout]   |                                ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `IpAddr`
[INFO] [stdout]  --> src/peers.rs:5:16
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::net::{IpAddr, SocketAddr};
[INFO] [stdout]   |                ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::str::FromStr`
[INFO] [stdout]  --> src/peers.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::str::FromStr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::sync::OnceCell`
[INFO] [stdout]  --> src/db_utils.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use tokio::sync::OnceCell;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/peers.rs:39:13
[INFO] [stdout]    |
[INFO] [stdout] 39 |         let mut new_known_peers: Vec<SocketAddr> = Vec::new();
[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: variable does not need to be mutable
[INFO] [stdout]   --> src/peers.rs:46:20
[INFO] [stdout]    |
[INFO] [stdout] 46 |                 Ok(mut response) => {
[INFO] [stdout]    |                    ----^^^^^^^^
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `is_genesis`
[INFO] [stdout]    --> src/block_utils.rs:113:13
[INFO] [stdout]     |
[INFO] [stdout] 113 |         let is_genesis = block.index == 0;
[INFO] [stdout]     |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_is_genesis`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `remote_addr`
[INFO] [stdout]   --> src/main.rs:50:14
[INFO] [stdout]    |
[INFO] [stdout] 50 | fn get_peers(remote_addr: SocketAddr) -> status::Custom<content::RawJson<String>> {
[INFO] [stdout]    |              ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_remote_addr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let mut peers = peers::Peers::new();
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `DIFFICULTY` is never used
[INFO] [stdout]  --> src/block_utils.rs:8:7
[INFO] [stdout]   |
[INFO] [stdout] 8 | const DIFFICULTY: usize = 8; // number of zeros needed to prefix hash (bits)
[INFO] [stdout]   |       ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `generate_priv_key` is never used
[INFO] [stdout]  --> src/account_utils.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn generate_priv_key() -> SigningKey {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `generate_pub_key` is never used
[INFO] [stdout]   --> src/account_utils.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn generate_pub_key(private_key: &SigningKey) -> VerifyingKey {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `priv_key_to_hex` is never used
[INFO] [stdout]   --> src/account_utils.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn priv_key_to_hex(private_key: &SigningKey) -> String { hex::encode(private_key.to_bytes()) }
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `pub_key_to_hex` is never used
[INFO] [stdout]   --> src/account_utils.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn pub_key_to_hex(pub_key: &VerifyingKey) -> String { hex::encode(pub_key.to_bytes()) }
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `signature_to_hex` is never used
[INFO] [stdout]   --> src/account_utils.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub fn signature_to_hex(signature: &Signature) -> String { hex::encode(signature.to_bytes()) }
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `priv_key_from_hex` is never used
[INFO] [stdout]   --> src/account_utils.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub fn priv_key_from_hex(hex_str: &str) -> Result<SigningKey, Box<dyn std::error::Error>> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `pub_key_from_hex` is never used
[INFO] [stdout]   --> src/account_utils.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub fn pub_key_from_hex(hex_str: &str) -> Result<VerifyingKey, Box<dyn std::error::Error>> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `signature_from_hex` is never used
[INFO] [stdout]   --> src/account_utils.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub fn signature_from_hex(hex_str: &str) -> Result<Signature, Box<dyn std::error::Error>> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `from_json`, `get_known_peers`, and `remove_ip` are never used
[INFO] [stdout]   --> src/peers.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl Peers {
[INFO] [stdout]    | ---------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 26 |     pub fn from_json(json: &str) -> Vec<SocketAddr> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 34 |     pub fn get_known_peers(&mut self) -> Vec<SocketAddr> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 91 |     pub fn remove_ip(&mut self, ip_addr: SocketAddr) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:61:21
[INFO] [stdout]    |
[INFO] [stdout] 61 |                     db_utils::add_block(Block::add_acc_diff_to_block(block));
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 61 |                     let _ = db_utils::add_block(Block::add_acc_diff_to_block(block));
[INFO] [stdout]    |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:86:5
[INFO] [stdout]    |
[INFO] [stdout] 86 |     db_utils::create_tables();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 86 |     let _ = db_utils::create_tables();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:111:5
[INFO] [stdout]     |
[INFO] [stdout] 111 |     db_utils::add_block(genesis);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 111 |     let _ = db_utils::add_block(genesis);
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/db_utils.rs:49:5
[INFO] [stdout]    |
[INFO] [stdout] 49 |     statement.next();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 49 |     let _ = statement.next();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.42s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: num-bigint-dig v0.8.4
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "2554e7dd37aa0d14641c3cd68290c9d0dab06733eeb5f1414b10342867b734ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2554e7dd37aa0d14641c3cd68290c9d0dab06733eeb5f1414b10342867b734ca", kill_on_drop: false }`
[INFO] [stdout] 2554e7dd37aa0d14641c3cd68290c9d0dab06733eeb5f1414b10342867b734ca