[INFO] cloning repository https://github.com/Zeddling/baby_blockchain
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Zeddling/baby_blockchain" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FZeddling%2Fbaby_blockchain", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FZeddling%2Fbaby_blockchain'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] af72e03626ea18e22152672d65bdf9fcd807fa07
[INFO] checking Zeddling/baby_blockchain against try#14731909456ca628a194900c35659dfdcb359e77 for pr-149195-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FZeddling%2Fbaby_blockchain" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Zeddling/baby_blockchain
[INFO] finished tweaking git repo https://github.com/Zeddling/baby_blockchain
[INFO] tweaked toml for git repo https://github.com/Zeddling/baby_blockchain written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Zeddling/baby_blockchain on toolchain 14731909456ca628a194900c35659dfdcb359e77
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+14731909456ca628a194900c35659dfdcb359e77" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Zeddling/baby_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" "+14731909456ca628a194900c35659dfdcb359e77" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+14731909456ca628a194900c35659dfdcb359e77" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b37f60727f815b29870856473032e1ff450c1b8ce4e307c179b498e10d82ab74
[INFO] running `Command { std: "docker" "start" "-a" "b37f60727f815b29870856473032e1ff450c1b8ce4e307c179b498e10d82ab74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b37f60727f815b29870856473032e1ff450c1b8ce4e307c179b498e10d82ab74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b37f60727f815b29870856473032e1ff450c1b8ce4e307c179b498e10d82ab74", kill_on_drop: false }`
[INFO] [stdout] b37f60727f815b29870856473032e1ff450c1b8ce4e307c179b498e10d82ab74
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+14731909456ca628a194900c35659dfdcb359e77" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2152cd71aa837fbdc1c80308eb6e6c28455adb324aadbc9a4a351bbf2bd26f2d
[INFO] running `Command { std: "docker" "start" "-a" "2152cd71aa837fbdc1c80308eb6e6c28455adb324aadbc9a4a351bbf2bd26f2d", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-ident v1.0.1
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling serde_derive v1.0.142
[INFO] [stderr]    Compiling serde v1.0.142
[INFO] [stderr]    Compiling serde_test v1.0.142
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling serde_json v1.0.83
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]     Checking ryu v1.0.11
[INFO] [stderr]     Checking itoa v1.0.3
[INFO] [stderr]     Checking hex v0.4.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.40
[INFO] [stderr]     Checking getrandom v0.2.7
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]    Compiling openssl-sys v0.9.74
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]    Compiling openssl v0.10.40
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling openssl-macros v0.1.0
[INFO] [stderr]     Checking baby_blockchain v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::borrow::BorrowMut`
[INFO] [stdout]  --> src/blockchain/mod.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::borrow::BorrowMut;
[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: `CoinUpdates`
[INFO] [stdout]  --> src/blockchain/mod.rs:6:23
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::transops::{CoinUpdates, get_nonce, Operation, Transaction};
[INFO] [stdout]   |                       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Deserialize`, `Deserializer`, and `de`
[INFO] [stdout]  --> src/keysig/mod.rs:7:13
[INFO] [stdout]   |
[INFO] [stdout] 7 | use serde::{de, Deserialize, Deserializer, Serialize, Serializer};
[INFO] [stdout]   |             ^^  ^^^^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Error`, `MapAccess`, `SeqAccess`, and `Visitor`
[INFO] [stdout]  --> src/keysig/mod.rs:8:17
[INFO] [stdout]   |
[INFO] [stdout] 8 | use serde::de::{Error, MapAccess, SeqAccess, Visitor};
[INFO] [stdout]   |                 ^^^^^  ^^^^^^^^^  ^^^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::BorrowMut`
[INFO] [stdout]  --> src/blockchain/mod.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::borrow::BorrowMut;
[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: `CoinUpdates`
[INFO] [stdout]  --> src/blockchain/mod.rs:6:23
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::transops::{CoinUpdates, get_nonce, Operation, Transaction};
[INFO] [stdout]   |                       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Deserialize`, `Deserializer`, and `de`
[INFO] [stdout]  --> src/keysig/mod.rs:7:13
[INFO] [stdout]   |
[INFO] [stdout] 7 | use serde::{de, Deserialize, Deserializer, Serialize, Serializer};
[INFO] [stdout]   |             ^^  ^^^^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Error`, `MapAccess`, `SeqAccess`, and `Visitor`
[INFO] [stdout]  --> src/keysig/mod.rs:8:17
[INFO] [stdout]   |
[INFO] [stdout] 8 | use serde::de::{Error, MapAccess, SeqAccess, Visitor};
[INFO] [stdout]   |                 ^^^^^  ^^^^^^^^^  ^^^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Token` and `assert_tokens`
[INFO] [stdout]   --> src/keysig/mod.rs:88:22
[INFO] [stdout]    |
[INFO] [stdout] 88 |     use serde_test::{assert_tokens, Token};
[INFO] [stdout]    |                      ^^^^^^^^^^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/blockchain/mod.rs:42:13
[INFO] [stdout]    |
[INFO] [stdout] 42 |         let mut account = Account::gen_account();
[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/blockchain/mod.rs:127:17
[INFO] [stdout]     |
[INFO] [stdout] 127 |             for mut transaction in block.transactions.iter_mut() {
[INFO] [stdout]     |                 ----^^^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `is_valid` is never read
[INFO] [stdout]   --> src/blockchain/mod.rs:94:28
[INFO] [stdout]    |
[INFO] [stdout] 94 |         let mut is_valid = false;
[INFO] [stdout]    |                            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `is_valid` is never read
[INFO] [stdout]   --> src/blockchain/mod.rs:99:18
[INFO] [stdout]    |
[INFO] [stdout] 99 |         } else { is_valid = false; }
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `is_valid` is never read
[INFO] [stdout]   --> src/blockchain/mod.rs:98:13
[INFO] [stdout]    |
[INFO] [stdout] 98 |             is_valid = true;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `is_valid` is never read
[INFO] [stdout]    --> src/blockchain/mod.rs:114:17
[INFO] [stdout]     |
[INFO] [stdout] 114 |                 is_valid = true;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `is_valid` is never read
[INFO] [stdout]    --> src/blockchain/mod.rs:116:17
[INFO] [stdout]     |
[INFO] [stdout] 116 |                 is_valid = false;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `verified` is never read
[INFO] [stdout]   --> src/transops/mod.rs:69:28
[INFO] [stdout]    |
[INFO] [stdout] 69 |         let mut verified = false;
[INFO] [stdout]    |                            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `add_key_pair_to_wallet` and `print_balance` are never used
[INFO] [stdout]   --> src/account/mod.rs:33:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl Account {
[INFO] [stdout]    | ------------ methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 33 |     pub fn add_key_pair_to_wallet(&mut self, keysig: KeySig) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 54 |     pub fn print_balance(&self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_id` is never used
[INFO] [stdout]   --> src/blockchain/mod.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | impl Block {
[INFO] [stdout]    | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 35 |     pub fn get_id(&self) -> String {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `show_coin_database` is never used
[INFO] [stdout]   --> src/blockchain/mod.rs:78:12
[INFO] [stdout]    |
[INFO] [stdout] 40 | impl Blockchain {
[INFO] [stdout]    | --------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 78 |     pub fn show_coin_database(&self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CoinUpdates` is never constructed
[INFO] [stdout]   --> src/transops/mod.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub struct CoinUpdates {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `get_signature`, `get_sender`, and `get_receiver` are never used
[INFO] [stdout]   --> src/transops/mod.rs:58:12
[INFO] [stdout]    |
[INFO] [stdout] 39 | impl Operation {
[INFO] [stdout]    | -------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 58 |     pub fn get_signature(&self) -> Vec<u8> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 62 |     pub fn get_sender(&self) -> Account {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 66 |     pub fn get_receiver(&self) -> Account { self.receiver.clone() }
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `get_id`, and `get_amount` are never used
[INFO] [stdout]    --> src/transops/mod.rs:136:12
[INFO] [stdout]     |
[INFO] [stdout] 135 | impl CoinUpdates {
[INFO] [stdout]     | ---------------- associated items in this implementation
[INFO] [stdout] 136 |     pub fn new() -> Vec<CoinUpdates> {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 143 |     pub fn get_id(&self) -> &str {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 146 |     pub fn get_amount(&self) -> u8 {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `verify_operation` is never used
[INFO] [stdout]    --> src/transops/mod.rs:172:8
[INFO] [stdout]     |
[INFO] [stdout] 172 | pub fn verify_operation(op: Operation) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `flight` should have an upper case name
[INFO] [stdout]   --> src/transops/mod.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout] 11 | const flight: &str = "Cargo Flight";
[INFO] [stdout]    |       ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_upper_case_globals)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] help: convert the identifier to upper case
[INFO] [stdout]    |
[INFO] [stdout] 11 - const flight: &str = "Cargo Flight";
[INFO] [stdout] 11 + const FLIGHT: &str = "Cargo Flight";
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/blockchain/mod.rs:42:13
[INFO] [stdout]    |
[INFO] [stdout] 42 |         let mut account = Account::gen_account();
[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/blockchain/mod.rs:127:17
[INFO] [stdout]     |
[INFO] [stdout] 127 |             for mut transaction in block.transactions.iter_mut() {
[INFO] [stdout]     |                 ----^^^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `is_valid` is never read
[INFO] [stdout]   --> src/blockchain/mod.rs:94:28
[INFO] [stdout]    |
[INFO] [stdout] 94 |         let mut is_valid = false;
[INFO] [stdout]    |                            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `is_valid` is never read
[INFO] [stdout]   --> src/blockchain/mod.rs:99:18
[INFO] [stdout]    |
[INFO] [stdout] 99 |         } else { is_valid = false; }
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `is_valid` is never read
[INFO] [stdout]   --> src/blockchain/mod.rs:98:13
[INFO] [stdout]    |
[INFO] [stdout] 98 |             is_valid = true;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `is_valid` is never read
[INFO] [stdout]    --> src/blockchain/mod.rs:114:17
[INFO] [stdout]     |
[INFO] [stdout] 114 |                 is_valid = true;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `is_valid` is never read
[INFO] [stdout]    --> src/blockchain/mod.rs:116:17
[INFO] [stdout]     |
[INFO] [stdout] 116 |                 is_valid = false;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/blockchain/mod.rs:233:13
[INFO] [stdout]     |
[INFO] [stdout] 233 |         let mut i = 0;
[INFO] [stdout]     |             ----^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `verified` is never read
[INFO] [stdout]   --> src/transops/mod.rs:69:28
[INFO] [stdout]    |
[INFO] [stdout] 69 |         let mut verified = false;
[INFO] [stdout]    |                            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `print_balance` is never used
[INFO] [stdout]   --> src/account/mod.rs:54:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl Account {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 54 |     pub fn print_balance(&self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `show_coin_database` is never used
[INFO] [stdout]   --> src/blockchain/mod.rs:78:12
[INFO] [stdout]    |
[INFO] [stdout] 40 | impl Blockchain {
[INFO] [stdout]    | --------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 78 |     pub fn show_coin_database(&self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CoinUpdates` is never constructed
[INFO] [stdout]   --> src/transops/mod.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub struct CoinUpdates {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_receiver` is never used
[INFO] [stdout]   --> src/transops/mod.rs:66:12
[INFO] [stdout]    |
[INFO] [stdout] 39 | impl Operation {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 66 |     pub fn get_receiver(&self) -> Account { self.receiver.clone() }
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `get_id`, and `get_amount` are never used
[INFO] [stdout]    --> src/transops/mod.rs:136:12
[INFO] [stdout]     |
[INFO] [stdout] 135 | impl CoinUpdates {
[INFO] [stdout]     | ---------------- associated items in this implementation
[INFO] [stdout] 136 |     pub fn new() -> Vec<CoinUpdates> {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 143 |     pub fn get_id(&self) -> &str {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 146 |     pub fn get_amount(&self) -> u8 {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `flight` should have an upper case name
[INFO] [stdout]   --> src/transops/mod.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout] 11 | const flight: &str = "Cargo Flight";
[INFO] [stdout]    |       ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_upper_case_globals)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] help: convert the identifier to upper case
[INFO] [stdout]    |
[INFO] [stdout] 11 - const flight: &str = "Cargo Flight";
[INFO] [stdout] 11 + const FLIGHT: &str = "Cargo Flight";
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.36s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: openssl v0.10.40
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 4`
[INFO] running `Command { std: "docker" "inspect" "2152cd71aa837fbdc1c80308eb6e6c28455adb324aadbc9a4a351bbf2bd26f2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2152cd71aa837fbdc1c80308eb6e6c28455adb324aadbc9a4a351bbf2bd26f2d", kill_on_drop: false }`
[INFO] [stdout] 2152cd71aa837fbdc1c80308eb6e6c28455adb324aadbc9a4a351bbf2bd26f2d
