[INFO] cloning repository https://github.com/arnaud111/ServRust4AL2Grp2
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/arnaud111/ServRust4AL2Grp2" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farnaud111%2FServRust4AL2Grp2", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farnaud111%2FServRust4AL2Grp2'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c339ff6dc6aa0395b5f8b2e42b91d6178e351e34
[INFO] checking arnaud111/ServRust4AL2Grp2 against 1.95.0 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farnaud111%2FServRust4AL2Grp2" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/arnaud111/ServRust4AL2Grp2
[INFO] finished tweaking git repo https://github.com/arnaud111/ServRust4AL2Grp2
[INFO] tweaked toml for git repo https://github.com/arnaud111/ServRust4AL2Grp2 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/arnaud111/ServRust4AL2Grp2 on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/arnaud111/ServRust4AL2Grp2 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" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5905effbadba8c8a84333c52e835d88ca1e58cd5258558d9b97ee7d5bac99f03
[INFO] running `Command { std: "docker" "start" "-a" "5905effbadba8c8a84333c52e835d88ca1e58cd5258558d9b97ee7d5bac99f03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5905effbadba8c8a84333c52e835d88ca1e58cd5258558d9b97ee7d5bac99f03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5905effbadba8c8a84333c52e835d88ca1e58cd5258558d9b97ee7d5bac99f03", kill_on_drop: false }`
[INFO] [stdout] 5905effbadba8c8a84333c52e835d88ca1e58cd5258558d9b97ee7d5bac99f03
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 90336f19a7cea6b0a42db2aec8876b27cab8bd8e110d64dc7e217a10cfd54d47
[INFO] running `Command { std: "docker" "start" "-a" "90336f19a7cea6b0a42db2aec8876b27cab8bd8e110d64dc7e217a10cfd54d47", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling serde v1.0.152
[INFO] [stderr]    Compiling serde_json v1.0.91
[INFO] [stderr]     Checking itoa v1.0.5
[INFO] [stderr]     Checking ryu v1.0.12
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking block-buffer v0.10.3
[INFO] [stderr]     Checking digest v0.10.6
[INFO] [stderr]     Checking md-5 v0.10.5
[INFO] [stderr]    Compiling serde_derive v1.0.152
[INFO] [stderr]     Checking ServRust4AL2Grp2 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::option::Option`
[INFO] [stdout]  --> src/messages/output/messages_output_types.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::option::Option;
[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: `crate::messages::input::message_challenge_result::ChallengeAnswer`
[INFO] [stdout]  --> src/messages/output/message_challenge.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::messages::input::message_challenge_result::ChallengeAnswer;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::read`
[INFO] [stdout]  --> src/messages/output/message_subscribe_result.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::read;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SliceRandom`
[INFO] [stdout]  --> src/challenge_compute/hash_cash.rs:1:21
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rand::prelude::{SliceRandom, ThreadRng};
[INFO] [stdout]   |                     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SocketAddr`
[INFO] [stdout]  --> src/main.rs:6:26
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::net::{Shutdown, SocketAddr, TcpListener, TcpStream};
[INFO] [stdout]   |                          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::env;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::challenge_compute::challenge_recover_secret::RecoverSecret`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use crate::challenge_compute::challenge_recover_secret::RecoverSecret;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::option::Option`
[INFO] [stdout]  --> src/messages/output/messages_output_types.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::option::Option;
[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: `crate::messages::input::message_challenge_result::ChallengeAnswer`
[INFO] [stdout]  --> src/messages/output/message_challenge.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::messages::input::message_challenge_result::ChallengeAnswer;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::read`
[INFO] [stdout]  --> src/messages/output/message_subscribe_result.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::read;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SliceRandom`
[INFO] [stdout]  --> src/challenge_compute/hash_cash.rs:1:21
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rand::prelude::{SliceRandom, ThreadRng};
[INFO] [stdout]   |                     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SocketAddr`
[INFO] [stdout]  --> src/main.rs:6:26
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::net::{Shutdown, SocketAddr, TcpListener, TcpStream};
[INFO] [stdout]   |                          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::env;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::challenge_compute::challenge_recover_secret::RecoverSecret`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use crate::challenge_compute::challenge_recover_secret::RecoverSecret;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `nonogram`
[INFO] [stdout]   --> src/messages/input/message_challenge_result.rs:36:45
[INFO] [stdout]    |
[INFO] [stdout] 36 |             ChallengeAnswer::NonogramSolver(nonogram) => {
[INFO] [stdout]    |                                             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_nonogram`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `secret`
[INFO] [stdout]   --> src/messages/input/message_challenge_result.rs:39:44
[INFO] [stdout]    |
[INFO] [stdout] 39 |             ChallengeAnswer::RecoverSecret(secret) => {
[INFO] [stdout]    |                                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_secret`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `nonogram`
[INFO] [stdout]   --> src/messages/input/message_challenge_result.rs:36:45
[INFO] [stdout]    |
[INFO] [stdout] 36 |             ChallengeAnswer::NonogramSolver(nonogram) => {
[INFO] [stdout]    |                                             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_nonogram`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `secret`
[INFO] [stdout]   --> src/messages/input/message_challenge_result.rs:39:44
[INFO] [stdout]    |
[INFO] [stdout] 39 |             ChallengeAnswer::RecoverSecret(secret) => {
[INFO] [stdout]    |                                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_secret`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:27:13
[INFO] [stdout]    |
[INFO] [stdout] 27 |         let mut stream = stream.unwrap();
[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/main.rs:147:13
[INFO] [stdout]     |
[INFO] [stdout] 147 |         let mut stream = stream.unwrap();
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `grid` is never read
[INFO] [stdout]  --> src/messages/input/challenges/nonogram_input.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct NonogramSolverInput {
[INFO] [stdout]   |            ------------------- field in this struct
[INFO] [stdout] 5 |     pub grid: String,
[INFO] [stdout]   |         ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `NonogramSolverInput` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `secret_sentence` is never read
[INFO] [stdout]  --> src/messages/input/challenges/recover_secret_input.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct RecoverSecretInput {
[INFO] [stdout]   |            ------------------ field in this struct
[INFO] [stdout] 5 |     pub secret_sentence: String,
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `RecoverSecretInput` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `ChallengeTimeout` and `RoundSummary` are never constructed
[INFO] [stdout]   --> src/messages/output/messages_output_types.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub enum MessageOutputType {
[INFO] [stdout]    |          ----------------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 16 |     ChallengeTimeout(ChallengeTimeout),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     RoundSummary(RoundSummary)
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `MessageOutputType` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `RecoverSecret` and `NonogramSolver` are never constructed
[INFO] [stdout]   --> src/messages/output/message_challenge.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout]  8 | pub enum ChallengeMessage {
[INFO] [stdout]    |          ---------------- variants in this enum
[INFO] [stdout]  9 |     MD5HashCash(Md5HashCashOutput),
[INFO] [stdout] 10 |     RecoverSecret(RecoverSecretOutput),
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 11 |     NonogramSolver(NonogramSolverOutput)
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ChallengeMessage` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Ok` and `Unreachable` are never constructed
[INFO] [stdout]   --> src/messages/output/message_round_summary.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | enum ChallengeResult {
[INFO] [stdout]    |      --------------- variants in this enum
[INFO] [stdout] 17 |     Ok(ChallengeOk),
[INFO] [stdout]    |     ^^
[INFO] [stdout] 18 |     Unreachable
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ChallengeResult` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `InvalidName` is never constructed
[INFO] [stdout]   --> src/messages/output/message_subscribe_result.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub enum SubscribeError {
[INFO] [stdout]    |          -------------- variant in this enum
[INFO] [stdout] 12 |     AlreadyRegistered,
[INFO] [stdout] 13 |     InvalidName
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `SubscribeError` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `RecoverSecret` is never constructed
[INFO] [stdout]  --> src/challenge_compute/challenge_recover_secret.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct RecoverSecret {
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `new`, `create_vec_index_letters`, `all_already_used`, `in_vec`, `all_used`, and `create_sentence` are never used
[INFO] [stdout]   --> src/challenge_compute/challenge_recover_secret.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl RecoverSecret {
[INFO] [stdout]    | ------------------ associated functions in this implementation
[INFO] [stdout] 13 |     
[INFO] [stdout] 14 |     pub fn new() -> RecoverSecretOutput {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 46 |     fn create_vec_index_letters(size: usize, rng: &mut ThreadRng) -> Vec<usize> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 58 |     fn all_already_used(vec: &Vec<usize>, is_used: &[bool; 20]) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 67 |     fn in_vec(vec: &Vec<usize>, number: usize) -> bool {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 76 |     fn all_used(is_used: &[bool; 20]) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 85 |     fn create_sentence(rng: &mut ThreadRng) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:27:13
[INFO] [stdout]    |
[INFO] [stdout] 27 |         let mut stream = stream.unwrap();
[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/main.rs:147:13
[INFO] [stdout]     |
[INFO] [stdout] 147 |         let mut stream = stream.unwrap();
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |         stream.0.shutdown(Shutdown::Both);
[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] 40 |         let _ = stream.0.shutdown(Shutdown::Both);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:183:5
[INFO] [stdout]     |
[INFO] [stdout] 183 |     stream.set_read_timeout(Option::from(timeout));
[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] 183 |     let _ = stream.set_read_timeout(Option::from(timeout));
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:229:5
[INFO] [stdout]     |
[INFO] [stdout] 229 |     stream.write(&buf);
[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] 229 |     let _ = stream.write(&buf);
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `grid` is never read
[INFO] [stdout]  --> src/messages/input/challenges/nonogram_input.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct NonogramSolverInput {
[INFO] [stdout]   |            ------------------- field in this struct
[INFO] [stdout] 5 |     pub grid: String,
[INFO] [stdout]   |         ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `NonogramSolverInput` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `secret_sentence` is never read
[INFO] [stdout]  --> src/messages/input/challenges/recover_secret_input.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct RecoverSecretInput {
[INFO] [stdout]   |            ------------------ field in this struct
[INFO] [stdout] 5 |     pub secret_sentence: String,
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `RecoverSecretInput` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `ChallengeTimeout` and `RoundSummary` are never constructed
[INFO] [stdout]   --> src/messages/output/messages_output_types.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub enum MessageOutputType {
[INFO] [stdout]    |          ----------------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 16 |     ChallengeTimeout(ChallengeTimeout),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     RoundSummary(RoundSummary)
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `MessageOutputType` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `RecoverSecret` and `NonogramSolver` are never constructed
[INFO] [stdout]   --> src/messages/output/message_challenge.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout]  8 | pub enum ChallengeMessage {
[INFO] [stdout]    |          ---------------- variants in this enum
[INFO] [stdout]  9 |     MD5HashCash(Md5HashCashOutput),
[INFO] [stdout] 10 |     RecoverSecret(RecoverSecretOutput),
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 11 |     NonogramSolver(NonogramSolverOutput)
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ChallengeMessage` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Ok` and `Unreachable` are never constructed
[INFO] [stdout]   --> src/messages/output/message_round_summary.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | enum ChallengeResult {
[INFO] [stdout]    |      --------------- variants in this enum
[INFO] [stdout] 17 |     Ok(ChallengeOk),
[INFO] [stdout]    |     ^^
[INFO] [stdout] 18 |     Unreachable
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ChallengeResult` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `InvalidName` is never constructed
[INFO] [stdout]   --> src/messages/output/message_subscribe_result.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub enum SubscribeError {
[INFO] [stdout]    |          -------------- variant in this enum
[INFO] [stdout] 12 |     AlreadyRegistered,
[INFO] [stdout] 13 |     InvalidName
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `SubscribeError` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `RecoverSecret` is never constructed
[INFO] [stdout]  --> src/challenge_compute/challenge_recover_secret.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct RecoverSecret {
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `new`, `create_vec_index_letters`, `all_already_used`, `in_vec`, `all_used`, and `create_sentence` are never used
[INFO] [stdout]   --> src/challenge_compute/challenge_recover_secret.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl RecoverSecret {
[INFO] [stdout]    | ------------------ associated functions in this implementation
[INFO] [stdout] 13 |     
[INFO] [stdout] 14 |     pub fn new() -> RecoverSecretOutput {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 46 |     fn create_vec_index_letters(size: usize, rng: &mut ThreadRng) -> Vec<usize> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 58 |     fn all_already_used(vec: &Vec<usize>, is_used: &[bool; 20]) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 67 |     fn in_vec(vec: &Vec<usize>, number: usize) -> bool {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 76 |     fn all_used(is_used: &[bool; 20]) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 85 |     fn create_sentence(rng: &mut ThreadRng) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |         stream.0.shutdown(Shutdown::Both);
[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] 40 |         let _ = stream.0.shutdown(Shutdown::Both);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:183:5
[INFO] [stdout]     |
[INFO] [stdout] 183 |     stream.set_read_timeout(Option::from(timeout));
[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] 183 |     let _ = stream.set_read_timeout(Option::from(timeout));
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:229:5
[INFO] [stdout]     |
[INFO] [stdout] 229 |     stream.write(&buf);
[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] 229 |     let _ = stream.write(&buf);
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.72s
[INFO] running `Command { std: "docker" "inspect" "90336f19a7cea6b0a42db2aec8876b27cab8bd8e110d64dc7e217a10cfd54d47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90336f19a7cea6b0a42db2aec8876b27cab8bd8e110d64dc7e217a10cfd54d47", kill_on_drop: false }`
[INFO] [stdout] 90336f19a7cea6b0a42db2aec8876b27cab8bd8e110d64dc7e217a10cfd54d47
