[INFO] cloning repository https://github.com/AnthonyMBonafide/hangman-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AnthonyMBonafide/hangman-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAnthonyMBonafide%2Fhangman-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAnthonyMBonafide%2Fhangman-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7f1aabd11ec8b05a205263168a6c47dcebbd2506
[INFO] testing AnthonyMBonafide/hangman-rs against try#8de4c7234dd9b97c9d76b58671343fdbbc9a433e+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_with_libc_patch_0
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAnthonyMBonafide%2Fhangman-rs" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/AnthonyMBonafide/hangman-rs
[INFO] finished tweaking git repo https://github.com/AnthonyMBonafide/hangman-rs
[INFO] tweaked toml for git repo https://github.com/AnthonyMBonafide/hangman-rs written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/AnthonyMBonafide/hangman-rs on toolchain 8de4c7234dd9b97c9d76b58671343fdbbc9a433e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/AnthonyMBonafide/hangman-rs 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" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a9b13c9f652b3ea7d788e089e7a0b2cb95eed7178718b678e5fec2307f51f36c
[INFO] running `Command { std: "docker" "start" "-a" "a9b13c9f652b3ea7d788e089e7a0b2cb95eed7178718b678e5fec2307f51f36c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a9b13c9f652b3ea7d788e089e7a0b2cb95eed7178718b678e5fec2307f51f36c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9b13c9f652b3ea7d788e089e7a0b2cb95eed7178718b678e5fec2307f51f36c", kill_on_drop: false }`
[INFO] [stdout] a9b13c9f652b3ea7d788e089e7a0b2cb95eed7178718b678e5fec2307f51f36c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "build" "--frozen" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] ac7d8f18ff42926531ed813f9c5e2afba93f05ec9988df6f67a2f303562b3791
[INFO] running `Command { std: "docker" "start" "-a" "ac7d8f18ff42926531ed813f9c5e2afba93f05ec9988df6f67a2f303562b3791", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling getrandom v0.1.13
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling rand v0.7.2
[INFO] [stderr]    Compiling hangman-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `io::input`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use io::input;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `io::output`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use io::output;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::io::input`
[INFO] [stdout]  --> src/hangman.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::io::input;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Normal` and `Hard` are never constructed
[INFO] [stdout]  --> src/configuration.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub enum Difficulty {
[INFO] [stdout]   |          ---------- variants in this enum
[INFO] [stdout] 2 |     Easy,
[INFO] [stdout] 3 |     Normal,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 4 |     Hard,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `File` and `GUI` are never constructed
[INFO] [stdout]   --> src/configuration.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | pub enum InputOutput {
[INFO] [stdout]    |          ----------- variants in this enum
[INFO] [stdout] 8  |     StdIn,
[INFO] [stdout] 9  |     File,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 10 |     GUI,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Redis` is never constructed
[INFO] [stdout]   --> src/configuration.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub enum Database {
[INFO] [stdout]    |          -------- variant in this enum
[INFO] [stdout] 14 |     File,
[INFO] [stdout] 15 |     Redis,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `input` and `database` are never read
[INFO] [stdout]   --> src/configuration.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct Configuration {
[INFO] [stdout]    |            ------------- fields in this struct
[INFO] [stdout] 20 |     difficulty: Difficulty,
[INFO] [stdout] 21 |     input: InputOutput,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 22 |     output: InputOutput,
[INFO] [stdout] 23 |     database: Database,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_output` is never used
[INFO] [stdout]   --> src/configuration.rs:47:12
[INFO] [stdout]    |
[INFO] [stdout] 26 | impl Configuration {
[INFO] [stdout]    | ------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 47 |     pub fn get_output(&self) -> &InputOutput {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `configuration` is never read
[INFO] [stdout]   --> src/hangman.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct HangmanGame<R, W>
[INFO] [stdout]    |            ----------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 24 |     configuration: Configuration,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/io/cli.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         handle.read_line(&mut buffer);
[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)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 32 |         let _ = handle.read_line(&mut buffer);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.09s
[INFO] running `Command { std: "docker" "inspect" "ac7d8f18ff42926531ed813f9c5e2afba93f05ec9988df6f67a2f303562b3791", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac7d8f18ff42926531ed813f9c5e2afba93f05ec9988df6f67a2f303562b3791", kill_on_drop: false }`
[INFO] [stdout] ac7d8f18ff42926531ed813f9c5e2afba93f05ec9988df6f67a2f303562b3791
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "test" "--frozen" "--no-run" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] b5d4b61abcbb363af580ff37c5adc8d06dca7d229724c6426cfcaaca8f5af27d
[INFO] running `Command { std: "docker" "start" "-a" "b5d4b61abcbb363af580ff37c5adc8d06dca7d229724c6426cfcaaca8f5af27d", kill_on_drop: false }`
[INFO] [stderr]    Compiling hangman-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `io::input`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use io::input;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `io::output`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use io::output;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::io::input`
[INFO] [stdout]  --> src/hangman.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::io::input;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Normal` and `Hard` are never constructed
[INFO] [stdout]  --> src/configuration.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub enum Difficulty {
[INFO] [stdout]   |          ---------- variants in this enum
[INFO] [stdout] 2 |     Easy,
[INFO] [stdout] 3 |     Normal,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 4 |     Hard,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `File` and `GUI` are never constructed
[INFO] [stdout]   --> src/configuration.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | pub enum InputOutput {
[INFO] [stdout]    |          ----------- variants in this enum
[INFO] [stdout] 8  |     StdIn,
[INFO] [stdout] 9  |     File,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 10 |     GUI,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Redis` is never constructed
[INFO] [stdout]   --> src/configuration.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub enum Database {
[INFO] [stdout]    |          -------- variant in this enum
[INFO] [stdout] 14 |     File,
[INFO] [stdout] 15 |     Redis,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `input` and `database` are never read
[INFO] [stdout]   --> src/configuration.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct Configuration {
[INFO] [stdout]    |            ------------- fields in this struct
[INFO] [stdout] 20 |     difficulty: Difficulty,
[INFO] [stdout] 21 |     input: InputOutput,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 22 |     output: InputOutput,
[INFO] [stdout] 23 |     database: Database,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_output` is never used
[INFO] [stdout]   --> src/configuration.rs:47:12
[INFO] [stdout]    |
[INFO] [stdout] 26 | impl Configuration {
[INFO] [stdout]    | ------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 47 |     pub fn get_output(&self) -> &InputOutput {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `configuration` is never read
[INFO] [stdout]   --> src/hangman.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct HangmanGame<R, W>
[INFO] [stdout]    |            ----------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 24 |     configuration: Configuration,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/io/cli.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         handle.read_line(&mut buffer);
[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)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 32 |         let _ = handle.read_line(&mut buffer);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.51s
[INFO] running `Command { std: "docker" "inspect" "b5d4b61abcbb363af580ff37c5adc8d06dca7d229724c6426cfcaaca8f5af27d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5d4b61abcbb363af580ff37c5adc8d06dca7d229724c6426cfcaaca8f5af27d", kill_on_drop: false }`
[INFO] [stdout] b5d4b61abcbb363af580ff37c5adc8d06dca7d229724c6426cfcaaca8f5af27d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "test" "--frozen" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 8829e7c831c52660c5ce470fc5cbbf6aa8b72005548da4449ac66ce8ef9ab400
[INFO] running `Command { std: "docker" "start" "-a" "8829e7c831c52660c5ce470fc5cbbf6aa8b72005548da4449ac66ce8ef9ab400", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `io::input`
[INFO] [stderr]  --> src/main.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use io::input;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `io::output`
[INFO] [stderr]  --> src/main.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use io::output;
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::io::input`
[INFO] [stderr]  --> src/hangman.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use crate::io::input;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variants `Normal` and `Hard` are never constructed
[INFO] [stderr]  --> src/configuration.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub enum Difficulty {
[INFO] [stderr]   |          ---------- variants in this enum
[INFO] [stderr] 2 |     Easy,
[INFO] [stderr] 3 |     Normal,
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr] 4 |     Hard,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variants `File` and `GUI` are never constructed
[INFO] [stderr]   --> src/configuration.rs:9:5
[INFO] [stderr]    |
[INFO] [stderr] 7  | pub enum InputOutput {
[INFO] [stderr]    |          ----------- variants in this enum
[INFO] [stderr] 8  |     StdIn,
[INFO] [stderr] 9  |     File,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 10 |     GUI,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant `Redis` is never constructed
[INFO] [stderr]   --> src/configuration.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | pub enum Database {
[INFO] [stderr]    |          -------- variant in this enum
[INFO] [stderr] 14 |     File,
[INFO] [stderr] 15 |     Redis,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: fields `input` and `database` are never read
[INFO] [stderr]   --> src/configuration.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 19 | pub struct Configuration {
[INFO] [stderr]    |            ------------- fields in this struct
[INFO] [stderr] 20 |     difficulty: Difficulty,
[INFO] [stderr] 21 |     input: InputOutput,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 22 |     output: InputOutput,
[INFO] [stderr] 23 |     database: Database,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `get_output` is never used
[INFO] [stderr]   --> src/configuration.rs:47:12
[INFO] [stderr]    |
[INFO] [stderr] 26 | impl Configuration {
[INFO] [stderr]    | ------------------ method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 47 |     pub fn get_output(&self) -> &InputOutput {
[INFO] [stderr]    |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `configuration` is never read
[INFO] [stderr]   --> src/hangman.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 19 | pub struct HangmanGame<R, W>
[INFO] [stderr]    |            ----------- field in this struct
[INFO] [stderr] ...
[INFO] [stderr] 24 |     configuration: Configuration,
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/io/cli.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |         handle.read_line(&mut buffer);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 32 |         let _ = handle.read_line(&mut buffer);
[INFO] [stderr]    |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `hangman-rs` (bin "hangman-rs" test) generated 10 warnings (run `cargo fix --bin "hangman-rs" --tests` to apply 3 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/x86_64-unknown-linux-musl/debug/deps/hangman_rs-37a16ca66b5973da)
[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" "8829e7c831c52660c5ce470fc5cbbf6aa8b72005548da4449ac66ce8ef9ab400", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8829e7c831c52660c5ce470fc5cbbf6aa8b72005548da4449ac66ce8ef9ab400", kill_on_drop: false }`
[INFO] [stdout] 8829e7c831c52660c5ce470fc5cbbf6aa8b72005548da4449ac66ce8ef9ab400