[INFO] cloning repository https://github.com/nyavro/rust-bc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nyavro/rust-bc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnyavro%2Frust-bc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnyavro%2Frust-bc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4b26090ffedae2f3c96e90fdb9b01ca0032b27ba
[INFO] testing nyavro/rust-bc against 1.91.0 for beta-1.92-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnyavro%2Frust-bc" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/nyavro/rust-bc
[INFO] finished tweaking git repo https://github.com/nyavro/rust-bc
[INFO] tweaked toml for git repo https://github.com/nyavro/rust-bc written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/nyavro/rust-bc on toolchain 1.91.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/nyavro/rust-bc 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" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded data-encoding v2.7.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e02026bb3d297c40d42f23cf2de16148bf44ca36ffa0247a713b2a1fa2daa9d7
[INFO] running `Command { std: "docker" "start" "-a" "e02026bb3d297c40d42f23cf2de16148bf44ca36ffa0247a713b2a1fa2daa9d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e02026bb3d297c40d42f23cf2de16148bf44ca36ffa0247a713b2a1fa2daa9d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e02026bb3d297c40d42f23cf2de16148bf44ca36ffa0247a713b2a1fa2daa9d7", kill_on_drop: false }`
[INFO] [stdout] e02026bb3d297c40d42f23cf2de16148bf44ca36ffa0247a713b2a1fa2daa9d7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2af900bcfab0697c16bcecd093d9f8f8062ebfe467e6ed2d67ced2acb9ea69ed
[INFO] running `Command { std: "docker" "start" "-a" "2af900bcfab0697c16bcecd093d9f8f8062ebfe467e6ed2d67ced2acb9ea69ed", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.4.0
[INFO] [stderr]    Compiling serde v1.0.217
[INFO] [stderr]    Compiling data-encoding v2.7.0
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling num-bigint v0.4.6
[INFO] [stderr]    Compiling rust-bc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `SystemTime` and `UNIX_EPOCH`
[INFO] [stdout]  --> src/main.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::time::{SystemTime, UNIX_EPOCH};
[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 imports: `Deserialize` and `Serialize`
[INFO] [stdout]  --> src/block.rs:2:13
[INFO] [stdout]   |
[INFO] [stdout] 2 | use serde::{Deserialize, Serialize};
[INFO] [stdout]   |             ^^^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `data_encoding::HEXLOWER`
[INFO] [stdout]  --> src/proof_of_work.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use data_encoding::HEXLOWER;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Sign`
[INFO] [stdout]  --> src/proof_of_work.rs:3:26
[INFO] [stdout]   |
[INFO] [stdout] 3 | use num_bigint::{BigInt, Sign};
[INFO] [stdout]   |                          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]  --> src/proof_of_work.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::borrow::Borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::ShlAssign`
[INFO] [stdout]  --> src/proof_of_work.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::ops::ShlAssign;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `target`
[INFO] [stdout]   --> src/proof_of_work.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let target: BigInt = BigInt::from(1) << (256 - TARGET_BITS);//BigInt::from(1).shl_assign(rhs);    
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_target`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `block_data`
[INFO] [stdout]  --> src/proof_of_work.rs:9:22
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn proof_of_work(block_data: &DataBlock) -> (String, i64) {
[INFO] [stdout]   |                      ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_block_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Transaction` is never constructed
[INFO] [stdout]  --> src/data_block.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct Transaction {
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DataBlock` is never constructed
[INFO] [stdout]  --> src/data_block.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct DataBlock {
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Block` is never constructed
[INFO] [stdout]  --> src/block.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Block {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/block.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl Block {    
[INFO] [stdout]    | ---------- associated function in this implementation
[INFO] [stdout] 14 |     pub fn new(pre_block_hash: String, transactions: &[Transaction], height: usize) -> Self {           
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `TARGET_BITS` is never used
[INFO] [stdout]  --> src/proof_of_work.rs:7:7
[INFO] [stdout]   |
[INFO] [stdout] 7 | const TARGET_BITS: i32 = 8; 
[INFO] [stdout]   |       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `proof_of_work` is never used
[INFO] [stdout]  --> src/proof_of_work.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn proof_of_work(block_data: &DataBlock) -> (String, i64) {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.27s
[INFO] running `Command { std: "docker" "inspect" "2af900bcfab0697c16bcecd093d9f8f8062ebfe467e6ed2d67ced2acb9ea69ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2af900bcfab0697c16bcecd093d9f8f8062ebfe467e6ed2d67ced2acb9ea69ed", kill_on_drop: false }`
[INFO] [stdout] 2af900bcfab0697c16bcecd093d9f8f8062ebfe467e6ed2d67ced2acb9ea69ed
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 04f88bf1f8e832f3600576dd19259df0060f7801964cf3ad1fb3adea7d1acc27
[INFO] running `Command { std: "docker" "start" "-a" "04f88bf1f8e832f3600576dd19259df0060f7801964cf3ad1fb3adea7d1acc27", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-bc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `SystemTime` and `UNIX_EPOCH`
[INFO] [stdout]  --> src/main.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::time::{SystemTime, UNIX_EPOCH};
[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 imports: `Deserialize` and `Serialize`
[INFO] [stdout]  --> src/block.rs:2:13
[INFO] [stdout]   |
[INFO] [stdout] 2 | use serde::{Deserialize, Serialize};
[INFO] [stdout]   |             ^^^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `data_encoding::HEXLOWER`
[INFO] [stdout]  --> src/proof_of_work.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use data_encoding::HEXLOWER;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Sign`
[INFO] [stdout]  --> src/proof_of_work.rs:3:26
[INFO] [stdout]   |
[INFO] [stdout] 3 | use num_bigint::{BigInt, Sign};
[INFO] [stdout]   |                          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]  --> src/proof_of_work.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::borrow::Borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::ShlAssign`
[INFO] [stdout]  --> src/proof_of_work.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::ops::ShlAssign;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `target`
[INFO] [stdout]   --> src/proof_of_work.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let target: BigInt = BigInt::from(1) << (256 - TARGET_BITS);//BigInt::from(1).shl_assign(rhs);    
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_target`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `block_data`
[INFO] [stdout]  --> src/proof_of_work.rs:9:22
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn proof_of_work(block_data: &DataBlock) -> (String, i64) {
[INFO] [stdout]   |                      ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_block_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Transaction` is never constructed
[INFO] [stdout]  --> src/data_block.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct Transaction {
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DataBlock` is never constructed
[INFO] [stdout]  --> src/data_block.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct DataBlock {
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Block` is never constructed
[INFO] [stdout]  --> src/block.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Block {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/block.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl Block {    
[INFO] [stdout]    | ---------- associated function in this implementation
[INFO] [stdout] 14 |     pub fn new(pre_block_hash: String, transactions: &[Transaction], height: usize) -> Self {           
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `TARGET_BITS` is never used
[INFO] [stdout]  --> src/proof_of_work.rs:7:7
[INFO] [stdout]   |
[INFO] [stdout] 7 | const TARGET_BITS: i32 = 8; 
[INFO] [stdout]   |       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `proof_of_work` is never used
[INFO] [stdout]  --> src/proof_of_work.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn proof_of_work(block_data: &DataBlock) -> (String, i64) {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `Command { std: "docker" "inspect" "04f88bf1f8e832f3600576dd19259df0060f7801964cf3ad1fb3adea7d1acc27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04f88bf1f8e832f3600576dd19259df0060f7801964cf3ad1fb3adea7d1acc27", kill_on_drop: false }`
[INFO] [stdout] 04f88bf1f8e832f3600576dd19259df0060f7801964cf3ad1fb3adea7d1acc27
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6a5260c2eb7c08a9b967688ff1335e8a3f1057863154335c5246463dae6e820e
[INFO] running `Command { std: "docker" "start" "-a" "6a5260c2eb7c08a9b967688ff1335e8a3f1057863154335c5246463dae6e820e", kill_on_drop: false }`
[INFO] [stderr] warning: unused imports: `SystemTime` and `UNIX_EPOCH`
[INFO] [stdout] 
[INFO] [stderr]  --> src/main.rs:1:17
[INFO] [stdout] running 0 tests
[INFO] [stderr]   |
[INFO] [stdout] 
[INFO] [stderr] 1 | use std::time::{SystemTime, UNIX_EPOCH};
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]   |                 ^^^^^^^^^^  ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Deserialize` and `Serialize`
[INFO] [stderr]  --> src/block.rs:2:13
[INFO] [stderr]   |
[INFO] [stderr] 2 | use serde::{Deserialize, Serialize};
[INFO] [stderr]   |             ^^^^^^^^^^^  ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `data_encoding::HEXLOWER`
[INFO] [stderr]  --> src/proof_of_work.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use data_encoding::HEXLOWER;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Sign`
[INFO] [stderr]  --> src/proof_of_work.rs:3:26
[INFO] [stderr]   |
[INFO] [stderr] 3 | use num_bigint::{BigInt, Sign};
[INFO] [stderr]   |                          ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::borrow::Borrow`
[INFO] [stderr]  --> src/proof_of_work.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::borrow::Borrow;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops::ShlAssign`
[INFO] [stderr]  --> src/proof_of_work.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::ops::ShlAssign;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `target`
[INFO] [stderr]   --> src/proof_of_work.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let target: BigInt = BigInt::from(1) << (256 - TARGET_BITS);//BigInt::from(1).shl_assign(rhs);    
[INFO] [stderr]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_target`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `block_data`
[INFO] [stderr]  --> src/proof_of_work.rs:9:22
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub fn proof_of_work(block_data: &DataBlock) -> (String, i64) {
[INFO] [stderr]   |                      ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_block_data`
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Transaction` is never constructed
[INFO] [stderr]  --> src/data_block.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 | pub struct Transaction {
[INFO] [stderr]   |            ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `DataBlock` is never constructed
[INFO] [stderr]  --> src/data_block.rs:7:12
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub struct DataBlock {
[INFO] [stderr]   |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Block` is never constructed
[INFO] [stderr]  --> src/block.rs:7:12
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub struct Block {
[INFO] [stderr]   |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]   --> src/block.rs:14:12
[INFO] [stderr]    |
[INFO] [stderr] 13 | impl Block {    
[INFO] [stderr]    | ---------- associated function in this implementation
[INFO] [stderr] 14 |     pub fn new(pre_block_hash: String, transactions: &[Transaction], height: usize) -> Self {           
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant `TARGET_BITS` is never used
[INFO] [stderr]  --> src/proof_of_work.rs:7:7
[INFO] [stderr]   |
[INFO] [stderr] 7 | const TARGET_BITS: i32 = 8; 
[INFO] [stderr]   |       ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `proof_of_work` is never used
[INFO] [stderr]  --> src/proof_of_work.rs:9:8
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub fn proof_of_work(block_data: &DataBlock) -> (String, i64) {
[INFO] [stderr]   |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-bc` (bin "rust-bc" test) generated 14 warnings (run `cargo fix --bin "rust-bc" --tests` to apply 6 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_bc-c84b8ce8bf5a4623)
[INFO] running `Command { std: "docker" "inspect" "6a5260c2eb7c08a9b967688ff1335e8a3f1057863154335c5246463dae6e820e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a5260c2eb7c08a9b967688ff1335e8a3f1057863154335c5246463dae6e820e", kill_on_drop: false }`
[INFO] [stdout] 6a5260c2eb7c08a9b967688ff1335e8a3f1057863154335c5246463dae6e820e