[INFO] cloning repository https://github.com/Hrishikesh-Thakkar/Bitcoin_Wallet_Rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Hrishikesh-Thakkar/Bitcoin_Wallet_Rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHrishikesh-Thakkar%2FBitcoin_Wallet_Rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHrishikesh-Thakkar%2FBitcoin_Wallet_Rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b7fa1413ea17ac253607193a3212e1563c2defa2
[INFO] testing Hrishikesh-Thakkar/Bitcoin_Wallet_Rust against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHrishikesh-Thakkar%2FBitcoin_Wallet_Rust" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Hrishikesh-Thakkar/Bitcoin_Wallet_Rust on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Hrishikesh-Thakkar/Bitcoin_Wallet_Rust
[INFO] finished tweaking git repo https://github.com/Hrishikesh-Thakkar/Bitcoin_Wallet_Rust
[INFO] tweaked toml for git repo https://github.com/Hrishikesh-Thakkar/Bitcoin_Wallet_Rust written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/Hrishikesh-Thakkar/Bitcoin_Wallet_Rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded strason v0.3.4
[INFO] [stderr]   Downloaded num-iter v0.1.35
[INFO] [stderr]   Downloaded bitcoin v0.11.0
[INFO] [stderr]   Downloaded secp256k1 v0.8.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 39f15bf0d24a6a1679a69cfecd60a40be57ac387718f3c91b8c4688b246a8296
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "39f15bf0d24a6a1679a69cfecd60a40be57ac387718f3c91b8c4688b246a8296", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "39f15bf0d24a6a1679a69cfecd60a40be57ac387718f3c91b8c4688b246a8296", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39f15bf0d24a6a1679a69cfecd60a40be57ac387718f3c91b8c4688b246a8296", kill_on_drop: false }`
[INFO] [stdout] 39f15bf0d24a6a1679a69cfecd60a40be57ac387718f3c91b8c4688b246a8296
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 534470485e6756abd55dc035e0cd2fe07d46d817492e61a3731c03bb697a5110
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "534470485e6756abd55dc035e0cd2fe07d46d817492e61a3731c03bb697a5110", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.0
[INFO] [stderr]    Compiling rand v0.4.2
[INFO] [stderr]    Compiling secp256k1 v0.8.2
[INFO] [stderr]    Compiling time v0.1.39
[INFO] [stderr]    Compiling num-integer v0.1.36
[INFO] [stderr]    Compiling rand v0.3.22
[INFO] [stderr]    Compiling num-iter v0.1.35
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling serde v0.6.15
[INFO] [stderr]    Compiling strason v0.3.4
[INFO] [stderr]    Compiling bitcoin v0.11.0
[INFO] [stderr]    Compiling hello_world v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::env;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::str`
[INFO] [stdout]  --> src/transaction.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::str;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::string::String`
[INFO] [stdout]  --> src/transaction.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::string::String;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `bitcoin::util::address::Address`
[INFO] [stdout]  --> src/transaction.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use bitcoin::util::address::Address;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `bitcoin::util::address::Privkey`
[INFO] [stdout]  --> src/transaction.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use bitcoin::util::address::Privkey;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Hash160`
[INFO] [stdout]   --> src/transaction.rs:14:27
[INFO] [stdout]    |
[INFO] [stdout] 14 | use bitcoin::util::hash::{Hash160, Sha256dHash};
[INFO] [stdout]    |                           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ToBase58`
[INFO] [stdout]   --> src/transaction.rs:17:14
[INFO] [stdout]    |
[INFO] [stdout] 17 | use base58::{ToBase58, FromBase58};
[INFO] [stdout]    |              ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `network`
[INFO] [stdout]   --> src/transaction.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let network = Network::Bitcoin;
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_network`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sighash`
[INFO] [stdout]   --> src/transaction.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let sighash = SigHashType::All;
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sighash`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/transaction.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let s = Secp256k1::new();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/transaction.rs:52:9
[INFO] [stdout]    |
[INFO] [stdout] 52 |     let mut txin = TxIn {
[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/transaction.rs:62:9
[INFO] [stdout]    |
[INFO] [stdout] 62 |     let mut transaction = Transaction {
[INFO] [stdout]    |         ----^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `options`
[INFO] [stdout]   --> src/main.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn options() -> i32 {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `generate_address`
[INFO] [stdout]   --> src/address.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn generate_address(nwork: &str) -> (String, String) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 28.15s
[INFO] running `Command { std: "docker" "inspect" "534470485e6756abd55dc035e0cd2fe07d46d817492e61a3731c03bb697a5110", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "534470485e6756abd55dc035e0cd2fe07d46d817492e61a3731c03bb697a5110", kill_on_drop: false }`
[INFO] [stdout] 534470485e6756abd55dc035e0cd2fe07d46d817492e61a3731c03bb697a5110
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ea6fd786f52ee0ec19146cabf843a28743036288fbc1f0bb6771034acc7e1b11
[INFO] running `Command { std: "docker" "start" "-a" "ea6fd786f52ee0ec19146cabf843a28743036288fbc1f0bb6771034acc7e1b11", kill_on_drop: false }`
[INFO] [stderr]    Compiling hello_world v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::env;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::str`
[INFO] [stdout]  --> src/transaction.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::str;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::string::String`
[INFO] [stdout]  --> src/transaction.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::string::String;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `bitcoin::util::address::Address`
[INFO] [stdout]  --> src/transaction.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use bitcoin::util::address::Address;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `bitcoin::util::address::Privkey`
[INFO] [stdout]  --> src/transaction.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use bitcoin::util::address::Privkey;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Hash160`
[INFO] [stdout]   --> src/transaction.rs:14:27
[INFO] [stdout]    |
[INFO] [stdout] 14 | use bitcoin::util::hash::{Hash160, Sha256dHash};
[INFO] [stdout]    |                           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ToBase58`
[INFO] [stdout]   --> src/transaction.rs:17:14
[INFO] [stdout]    |
[INFO] [stdout] 17 | use base58::{ToBase58, FromBase58};
[INFO] [stdout]    |              ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `network`
[INFO] [stdout]   --> src/transaction.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let network = Network::Bitcoin;
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_network`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sighash`
[INFO] [stdout]   --> src/transaction.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let sighash = SigHashType::All;
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sighash`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/transaction.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let s = Secp256k1::new();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/transaction.rs:52:9
[INFO] [stdout]    |
[INFO] [stdout] 52 |     let mut txin = TxIn {
[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/transaction.rs:62:9
[INFO] [stdout]    |
[INFO] [stdout] 62 |     let mut transaction = Transaction {
[INFO] [stdout]    |         ----^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `options`
[INFO] [stdout]   --> src/main.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn options() -> i32 {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `generate_address`
[INFO] [stdout]   --> src/address.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn generate_address(nwork: &str) -> (String, String) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.31s
[INFO] running `Command { std: "docker" "inspect" "ea6fd786f52ee0ec19146cabf843a28743036288fbc1f0bb6771034acc7e1b11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea6fd786f52ee0ec19146cabf843a28743036288fbc1f0bb6771034acc7e1b11", kill_on_drop: false }`
[INFO] [stdout] ea6fd786f52ee0ec19146cabf843a28743036288fbc1f0bb6771034acc7e1b11
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 0b8d0ad448a212f10d3e11e866844070c06fcbd3d4b149dc65a6e8ebd0d7c6e7
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0b8d0ad448a212f10d3e11e866844070c06fcbd3d4b149dc65a6e8ebd0d7c6e7", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::env`
[INFO] [stderr]  --> src/main.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::env;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::str`
[INFO] [stderr]  --> src/transaction.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::str;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::string::String`
[INFO] [stderr]  --> src/transaction.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::string::String;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `bitcoin::util::address::Address`
[INFO] [stderr]  --> src/transaction.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use bitcoin::util::address::Address;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `bitcoin::util::address::Privkey`
[INFO] [stderr]  --> src/transaction.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use bitcoin::util::address::Privkey;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Hash160`
[INFO] [stderr]   --> src/transaction.rs:14:27
[INFO] [stderr]    |
[INFO] [stderr] 14 | use bitcoin::util::hash::{Hash160, Sha256dHash};
[INFO] [stderr]    |                           ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ToBase58`
[INFO] [stderr]   --> src/transaction.rs:17:14
[INFO] [stderr]    |
[INFO] [stderr] 17 | use base58::{ToBase58, FromBase58};
[INFO] [stderr]    |              ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `network`
[INFO] [stderr]   --> src/transaction.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 |     let network = Network::Bitcoin;
[INFO] [stderr]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_network`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sighash`
[INFO] [stderr]   --> src/transaction.rs:26:9
[INFO] [stderr]    |
[INFO] [stderr] 26 |     let sighash = SigHashType::All;
[INFO] [stderr]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sighash`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]   --> src/transaction.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |     let s = Secp256k1::new();
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/transaction.rs:52:9
[INFO] [stderr]    |
[INFO] [stderr] 52 |     let mut txin = TxIn {
[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/transaction.rs:62:9
[INFO] [stderr]    |
[INFO] [stderr] 62 |     let mut transaction = Transaction {
[INFO] [stderr]    |         ----^^^^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `options`
[INFO] [stderr]   --> src/main.rs:11:4
[INFO] [stderr]    |
[INFO] [stderr] 11 | fn options() -> i32 {
[INFO] [stderr]    |    ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `generate_address`
[INFO] [stderr]   --> src/address.rs:14:8
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub fn generate_address(nwork: &str) -> (String, String) {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `hello_world` (bin "hello_world" test) generated 14 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/hello_world-0c5bd93edae9a960)
[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" "0b8d0ad448a212f10d3e11e866844070c06fcbd3d4b149dc65a6e8ebd0d7c6e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b8d0ad448a212f10d3e11e866844070c06fcbd3d4b149dc65a6e8ebd0d7c6e7", kill_on_drop: false }`
[INFO] [stdout] 0b8d0ad448a212f10d3e11e866844070c06fcbd3d4b149dc65a6e8ebd0d7c6e7