[INFO] cloning repository https://github.com/fatah4561/learn-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fatah4561/learn-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffatah4561%2Flearn-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffatah4561%2Flearn-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5cf7760fd58d3fbfb2de054f7453692693d72852
[INFO] testing fatah4561/learn-rust against 1.100.0-beta.1 for beta-1.100-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffatah4561%2Flearn-rust" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/fatah4561/learn-rust
[INFO] finished tweaking git repo https://github.com/fatah4561/learn-rust
[INFO] tweaked toml for git repo https://github.com/fatah4561/learn-rust written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/fatah4561/learn-rust on toolchain 1.100.0-beta.1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/fatah4561/learn-rust 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" "+1.100.0-beta.1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3111399a4047eeb3a02b7a90e478d715f38a8c6669b5c4b49d30a17385265909" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] d8cd599a81452a0de1c2f3b5e05e38cec9ffbaf51ce2d6da464d3eeb25e5d192
[INFO] running `Command { std: "docker" "start" "d8cd599a81452a0de1c2f3b5e05e38cec9ffbaf51ce2d6da464d3eeb25e5d192", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d8cd599a81452a0de1c2f3b5e05e38cec9ffbaf51ce2d6da464d3eeb25e5d192", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "d8cd599a81452a0de1c2f3b5e05e38cec9ffbaf51ce2d6da464d3eeb25e5d192" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d8cd599a81452a0de1c2f3b5e05e38cec9ffbaf51ce2d6da464d3eeb25e5d192", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "d8cd599a81452a0de1c2f3b5e05e38cec9ffbaf51ce2d6da464d3eeb25e5d192" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling smawk v0.3.2
[INFO] [stderr]    Compiling unicode-width v0.1.13
[INFO] [stderr]    Compiling smallvec v1.13.2
[INFO] [stderr]    Compiling textwrap v0.13.4
[INFO] [stderr]    Compiling ferris-says v0.3.1
[INFO] [stderr]    Compiling hello-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused label
[INFO] [stdout]   --> src/modules/h_flow_of_control/hba_nesting_and_labels.rs:10:13
[INFO] [stdout]    |
[INFO] [stdout] 10 |             'inner: loop {
[INFO] [stdout]    |             ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_labels)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/modules/i_functions/ib_closures/ib_closures.rs:44:1
[INFO] [stdout]    |
[INFO] [stdout] 44 | ;}
[INFO] [stdout]    | ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/modules/h_flow_of_control/hba_nesting_and_labels.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |                 break 'outer
[INFO] [stdout]    |                 ------------ any code following this expression is unreachable
[INFO] [stdout] 18 |             }
[INFO] [stdout] 19 |         println!("this point will never be reached");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `multi_char` is never read
[INFO] [stdout]   --> src/modules/b_primitives/ba_literals_and_operators.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     multi_char = "aw";
[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: unused variable: `x`
[INFO] [stdout]   --> src/modules/c_custom_types/cb_enums.rs:71:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |     let x = Operations::Add;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `my_string`
[INFO] [stdout]   --> src/modules/f_conversions/fa_from_and_into.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let my_string = String::from(my_str);
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_my_string`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `triple`
[INFO] [stdout]  --> src/modules/h_flow_of_control/hea_destructuring/heaa_tuples.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let triple = (0, -2, 3); // fist arm
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_triple`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `triple`
[INFO] [stdout]  --> src/modules/h_flow_of_control/hea_destructuring/heaa_tuples.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let triple = (1, -2, 3); // second arm
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_triple`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `triple`
[INFO] [stdout]  --> src/modules/h_flow_of_control/hea_destructuring/heaa_tuples.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let triple = (5, -2, 2); // third arm
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_triple`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `triple`
[INFO] [stdout]  --> src/modules/h_flow_of_control/hea_destructuring/heaa_tuples.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let triple = (3, -2, 4); // fourth arm
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_triple`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `player_status`
[INFO] [stdout]   --> src/modules/h_flow_of_control/hea_destructuring/heaa_tuples.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let player_status = (0, 5, (10, 20)); // 1st
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_player_status`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `player_status`
[INFO] [stdout]   --> src/modules/h_flow_of_control/hea_destructuring/heaa_tuples.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let player_status = (100, 5, (10, 20)); // 2nd
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_player_status`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `player_status`
[INFO] [stdout]   --> src/modules/h_flow_of_control/hea_destructuring/heaa_tuples.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let player_status = (2, 11, (10, 20)); // 3rd
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_player_status`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/modules/h_flow_of_control/hea_destructuring/heab_arrays_slices.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |         [first, middle @ .., last] => println!("array[0] is {}, middle is {:?}, and last element is {}", first, middle, last),
[INFO] [stdout]    |         -------------------------- matches all the relevant values
[INFO] [stdout] 43 |         _ => println!("no match found")
[INFO] [stdout]    |         ^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `array`
[INFO] [stdout]  --> src/modules/h_flow_of_control/hea_destructuring/heab_arrays_slices.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let array = [1, -2, 6]; // 2nd
[INFO] [stdout]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_array`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `array`
[INFO] [stdout]  --> src/modules/h_flow_of_control/hea_destructuring/heab_arrays_slices.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let array = [0, -2, 6]; // 1st
[INFO] [stdout]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_array`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `array`
[INFO] [stdout]  --> src/modules/h_flow_of_control/hea_destructuring/heab_arrays_slices.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let array = [-1, -2, 6]; // 3rd
[INFO] [stdout]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_array`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `array`
[INFO] [stdout]  --> src/modules/h_flow_of_control/hea_destructuring/heab_arrays_slices.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let array = [3, -2, 6]; // 4th
[INFO] [stdout]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_array`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `color`
[INFO] [stdout]   --> src/modules/h_flow_of_control/hea_destructuring/heac_enums.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let color = Color::RGB(122, 17, 40); // rgb
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_color`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `color`
[INFO] [stdout]   --> src/modules/h_flow_of_control/hea_destructuring/heac_enums.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let color = Color::Red; // red
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_color`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `color`
[INFO] [stdout]   --> src/modules/h_flow_of_control/hea_destructuring/heac_enums.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let color = Color::Blue; // blue
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_color`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `color`
[INFO] [stdout]   --> src/modules/h_flow_of_control/hea_destructuring/heac_enums.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let color = Color::Green; // green
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_color`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `color`
[INFO] [stdout]   --> src/modules/h_flow_of_control/hea_destructuring/heac_enums.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let color = Color::CMY(30, 30, 30); // cmy
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_color`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `color`
[INFO] [stdout]   --> src/modules/h_flow_of_control/hea_destructuring/heac_enums.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let color = Color::CMYK(30, 30, 30, 30); // cmyk
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_color`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `foo`
[INFO] [stdout]   --> src/modules/h_flow_of_control/hea_destructuring/heaf_structs.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let foo = Foo {x: (1,2), y: 3}; // 1st
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_foo`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `foo`
[INFO] [stdout]   --> src/modules/h_flow_of_control/hea_destructuring/heaf_structs.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let foo = Foo {x: (2,2), y: 2}; // 2nd
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_foo`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `temperature`
[INFO] [stdout]   --> src/modules/h_flow_of_control/heb_guards.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let temperature = Temperature::Celsius(35);
[INFO] [stdout]    |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_temperature`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]    --> src/modules/h_flow_of_control/hf_if_let.rs:109:8
[INFO] [stdout]     |
[INFO] [stdout] 109 |     if let Foo2::Bar = a2 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]     = help: consider replacing the `if let` with a `let`
[INFO] [stdout]     = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `count`
[INFO] [stdout]   --> src/modules/h_flow_of_control/hg_let_else.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let Ok(count) = u64::from_str(count_str) else {
[INFO] [stdout]    |            ^^^^^ help: if this is intentional, prefix it with an underscore: `_count`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `bc_arrays_and_slices` is never used
[INFO] [stdout]   --> src/modules/b_primitives/bc_arrays_and_slices.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn bc_arrays_and_slices() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name` and `age` are never read
[INFO] [stdout]   --> src/modules/c_custom_types/ca_structures.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout]  9 | struct Person {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 10 |     name: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 11 |     age: u8,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Person` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.49s
[INFO] running `Command { std: "docker" "inspect" "d8cd599a81452a0de1c2f3b5e05e38cec9ffbaf51ce2d6da464d3eeb25e5d192", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "d8cd599a81452a0de1c2f3b5e05e38cec9ffbaf51ce2d6da464d3eeb25e5d192" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling hello-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused label
[INFO] [stdout]   --> src/modules/h_flow_of_control/hba_nesting_and_labels.rs:10:13
[INFO] [stdout]    |
[INFO] [stdout] 10 |             'inner: loop {
[INFO] [stdout]    |             ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_labels)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/modules/i_functions/ib_closures/ib_closures.rs:44:1
[INFO] [stdout]    |
[INFO] [stdout] 44 | ;}
[INFO] [stdout]    | ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/modules/h_flow_of_control/hba_nesting_and_labels.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |                 break 'outer
[INFO] [stdout]    |                 ------------ any code following this expression is unreachable
[INFO] [stdout] 18 |             }
[INFO] [stdout] 19 |         println!("this point will never be reached");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `multi_char` is never read
[INFO] [stdout]   --> src/modules/b_primitives/ba_literals_and_operators.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     multi_char = "aw";
[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: unused variable: `x`
[INFO] [stdout]   --> src/modules/c_custom_types/cb_enums.rs:71:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |     let x = Operations::Add;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `my_string`
[INFO] [stdout]   --> src/modules/f_conversions/fa_from_and_into.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let my_string = String::from(my_str);
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_my_string`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `triple`
[INFO] [stdout]  --> src/modules/h_flow_of_control/hea_destructuring/heaa_tuples.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let triple = (0, -2, 3); // fist arm
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_triple`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `triple`
[INFO] [stdout]  --> src/modules/h_flow_of_control/hea_destructuring/heaa_tuples.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let triple = (1, -2, 3); // second arm
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_triple`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `triple`
[INFO] [stdout]  --> src/modules/h_flow_of_control/hea_destructuring/heaa_tuples.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let triple = (5, -2, 2); // third arm
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_triple`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `triple`
[INFO] [stdout]  --> src/modules/h_flow_of_control/hea_destructuring/heaa_tuples.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let triple = (3, -2, 4); // fourth arm
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_triple`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `player_status`
[INFO] [stdout]   --> src/modules/h_flow_of_control/hea_destructuring/heaa_tuples.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let player_status = (0, 5, (10, 20)); // 1st
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_player_status`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `player_status`
[INFO] [stdout]   --> src/modules/h_flow_of_control/hea_destructuring/heaa_tuples.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let player_status = (100, 5, (10, 20)); // 2nd
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_player_status`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `player_status`
[INFO] [stdout]   --> src/modules/h_flow_of_control/hea_destructuring/heaa_tuples.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let player_status = (2, 11, (10, 20)); // 3rd
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_player_status`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/modules/h_flow_of_control/hea_destructuring/heab_arrays_slices.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |         [first, middle @ .., last] => println!("array[0] is {}, middle is {:?}, and last element is {}", first, middle, last),
[INFO] [stdout]    |         -------------------------- matches all the relevant values
[INFO] [stdout] 43 |         _ => println!("no match found")
[INFO] [stdout]    |         ^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `array`
[INFO] [stdout]  --> src/modules/h_flow_of_control/hea_destructuring/heab_arrays_slices.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let array = [1, -2, 6]; // 2nd
[INFO] [stdout]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_array`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `array`
[INFO] [stdout]  --> src/modules/h_flow_of_control/hea_destructuring/heab_arrays_slices.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let array = [0, -2, 6]; // 1st
[INFO] [stdout]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_array`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `array`
[INFO] [stdout]  --> src/modules/h_flow_of_control/hea_destructuring/heab_arrays_slices.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let array = [-1, -2, 6]; // 3rd
[INFO] [stdout]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_array`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `array`
[INFO] [stdout]  --> src/modules/h_flow_of_control/hea_destructuring/heab_arrays_slices.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let array = [3, -2, 6]; // 4th
[INFO] [stdout]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_array`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `color`
[INFO] [stdout]   --> src/modules/h_flow_of_control/hea_destructuring/heac_enums.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let color = Color::RGB(122, 17, 40); // rgb
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_color`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `color`
[INFO] [stdout]   --> src/modules/h_flow_of_control/hea_destructuring/heac_enums.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let color = Color::Red; // red
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_color`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `color`
[INFO] [stdout]   --> src/modules/h_flow_of_control/hea_destructuring/heac_enums.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let color = Color::Blue; // blue
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_color`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `color`
[INFO] [stdout]   --> src/modules/h_flow_of_control/hea_destructuring/heac_enums.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let color = Color::Green; // green
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_color`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `color`
[INFO] [stdout]   --> src/modules/h_flow_of_control/hea_destructuring/heac_enums.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let color = Color::CMY(30, 30, 30); // cmy
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_color`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `color`
[INFO] [stdout]   --> src/modules/h_flow_of_control/hea_destructuring/heac_enums.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let color = Color::CMYK(30, 30, 30, 30); // cmyk
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_color`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `foo`
[INFO] [stdout]   --> src/modules/h_flow_of_control/hea_destructuring/heaf_structs.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let foo = Foo {x: (1,2), y: 3}; // 1st
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_foo`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `foo`
[INFO] [stdout]   --> src/modules/h_flow_of_control/hea_destructuring/heaf_structs.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let foo = Foo {x: (2,2), y: 2}; // 2nd
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_foo`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `temperature`
[INFO] [stdout]   --> src/modules/h_flow_of_control/heb_guards.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let temperature = Temperature::Celsius(35);
[INFO] [stdout]    |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_temperature`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]    --> src/modules/h_flow_of_control/hf_if_let.rs:109:8
[INFO] [stdout]     |
[INFO] [stdout] 109 |     if let Foo2::Bar = a2 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]     = help: consider replacing the `if let` with a `let`
[INFO] [stdout]     = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `count`
[INFO] [stdout]   --> src/modules/h_flow_of_control/hg_let_else.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let Ok(count) = u64::from_str(count_str) else {
[INFO] [stdout]    |            ^^^^^ help: if this is intentional, prefix it with an underscore: `_count`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `bc_arrays_and_slices` is never used
[INFO] [stdout]   --> src/modules/b_primitives/bc_arrays_and_slices.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn bc_arrays_and_slices() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name` and `age` are never read
[INFO] [stdout]   --> src/modules/c_custom_types/ca_structures.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout]  9 | struct Person {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 10 |     name: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 11 |     age: u8,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Person` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.47s
[INFO] running `Command { std: "docker" "inspect" "d8cd599a81452a0de1c2f3b5e05e38cec9ffbaf51ce2d6da464d3eeb25e5d192", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "d8cd599a81452a0de1c2f3b5e05e38cec9ffbaf51ce2d6da464d3eeb25e5d192" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] warning: unused label
[INFO] [stderr]   --> src/modules/h_flow_of_control/hba_nesting_and_labels.rs:10:13
[INFO] [stderr]    |
[INFO] [stderr] 10 |             'inner: loop {
[INFO] [stderr]    |             ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_labels)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]   --> src/modules/i_functions/ib_closures/ib_closures.rs:44:1
[INFO] [stderr]    |
[INFO] [stderr] 44 | ;}
[INFO] [stderr]    | ^ help: remove this semicolon
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(redundant_semicolons)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]   --> src/modules/h_flow_of_control/hba_nesting_and_labels.rs:19:9
[INFO] [stderr]    |
[INFO] [stderr] 17 |                 break 'outer
[INFO] [stderr]    |                 ------------ any code following this expression is unreachable
[INFO] [stderr] 18 |             }
[INFO] [stderr] 19 |         println!("this point will never be reached");
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `multi_char` is never read
[INFO] [stderr]   --> src/modules/b_primitives/ba_literals_and_operators.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     multi_char = "aw";
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/modules/c_custom_types/cb_enums.rs:71:9
[INFO] [stderr]    |
[INFO] [stderr] 71 |     let x = Operations::Add;
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `my_string`
[INFO] [stderr]   --> src/modules/f_conversions/fa_from_and_into.rs:51:9
[INFO] [stderr]    |
[INFO] [stderr] 51 |     let my_string = String::from(my_str);
[INFO] [stderr]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_my_string`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `triple`
[INFO] [stderr]  --> src/modules/h_flow_of_control/hea_destructuring/heaa_tuples.rs:5:9
[INFO] [stderr]   |
[INFO] [stderr] 5 |     let triple = (0, -2, 3); // fist arm
[INFO] [stderr]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_triple`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `triple`
[INFO] [stderr]  --> src/modules/h_flow_of_control/hea_destructuring/heaa_tuples.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let triple = (1, -2, 3); // second arm
[INFO] [stderr]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_triple`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `triple`
[INFO] [stderr]  --> src/modules/h_flow_of_control/hea_destructuring/heaa_tuples.rs:7:9
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let triple = (5, -2, 2); // third arm
[INFO] [stderr]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_triple`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `triple`
[INFO] [stderr]  --> src/modules/h_flow_of_control/hea_destructuring/heaa_tuples.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let triple = (3, -2, 4); // fourth arm
[INFO] [stderr]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_triple`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `player_status`
[INFO] [stderr]   --> src/modules/h_flow_of_control/hea_destructuring/heaa_tuples.rs:25:9
[INFO] [stderr]    |
[INFO] [stderr] 25 |     let player_status = (0, 5, (10, 20)); // 1st
[INFO] [stderr]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_player_status`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `player_status`
[INFO] [stderr]   --> src/modules/h_flow_of_control/hea_destructuring/heaa_tuples.rs:26:9
[INFO] [stderr]    |
[INFO] [stderr] 26 |     let player_status = (100, 5, (10, 20)); // 2nd
[INFO] [stderr]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_player_status`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `player_status`
[INFO] [stderr]   --> src/modules/h_flow_of_control/hea_destructuring/heaa_tuples.rs:27:9
[INFO] [stderr]    |
[INFO] [stderr] 27 |     let player_status = (2, 11, (10, 20)); // 3rd
[INFO] [stderr]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_player_status`
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/modules/h_flow_of_control/hea_destructuring/heab_arrays_slices.rs:43:9
[INFO] [stderr]    |
[INFO] [stderr] 42 |         [first, middle @ .., last] => println!("array[0] is {}, middle is {:?}, and last element is {}", first, middle, last),
[INFO] [stderr]    |         -------------------------- matches all the relevant values
[INFO] [stderr] 43 |         _ => println!("no match found")
[INFO] [stderr]    |         ^ no value can reach this
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `array`
[INFO] [stderr]  --> src/modules/h_flow_of_control/hea_destructuring/heab_arrays_slices.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let array = [1, -2, 6]; // 2nd
[INFO] [stderr]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_array`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `array`
[INFO] [stderr]  --> src/modules/h_flow_of_control/hea_destructuring/heab_arrays_slices.rs:7:9
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let array = [0, -2, 6]; // 1st
[INFO] [stderr]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_array`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `array`
[INFO] [stderr]  --> src/modules/h_flow_of_control/hea_destructuring/heab_arrays_slices.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let array = [-1, -2, 6]; // 3rd
[INFO] [stderr]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_array`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `array`
[INFO] [stderr]  --> src/modules/h_flow_of_control/hea_destructuring/heab_arrays_slices.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let array = [3, -2, 6]; // 4th
[INFO] [stderr]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_array`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `color`
[INFO] [stderr]   --> src/modules/h_flow_of_control/hea_destructuring/heac_enums.rs:23:9
[INFO] [stderr]    |
[INFO] [stderr] 23 |     let color = Color::RGB(122, 17, 40); // rgb
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_color`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `color`
[INFO] [stderr]   --> src/modules/h_flow_of_control/hea_destructuring/heac_enums.rs:24:9
[INFO] [stderr]    |
[INFO] [stderr] 24 |     let color = Color::Red; // red
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_color`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `color`
[INFO] [stderr]   --> src/modules/h_flow_of_control/hea_destructuring/heac_enums.rs:25:9
[INFO] [stderr]    |
[INFO] [stderr] 25 |     let color = Color::Blue; // blue
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_color`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `color`
[INFO] [stderr]   --> src/modules/h_flow_of_control/hea_destructuring/heac_enums.rs:26:9
[INFO] [stderr]    |
[INFO] [stderr] 26 |     let color = Color::Green; // green
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_color`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `color`
[INFO] [stderr]   --> src/modules/h_flow_of_control/hea_destructuring/heac_enums.rs:27:9
[INFO] [stderr]    |
[INFO] [stderr] 27 |     let color = Color::CMY(30, 30, 30); // cmy
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_color`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `color`
[INFO] [stderr]   --> src/modules/h_flow_of_control/hea_destructuring/heac_enums.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 28 |     let color = Color::CMYK(30, 30, 30, 30); // cmyk
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_color`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `foo`
[INFO] [stderr]   --> src/modules/h_flow_of_control/hea_destructuring/heaf_structs.rs:11:9
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let foo = Foo {x: (1,2), y: 3}; // 1st
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_foo`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `foo`
[INFO] [stderr]   --> src/modules/h_flow_of_control/hea_destructuring/heaf_structs.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let foo = Foo {x: (2,2), y: 2}; // 2nd
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_foo`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `temperature`
[INFO] [stderr]   --> src/modules/h_flow_of_control/heb_guards.rs:11:9
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let temperature = Temperature::Celsius(35);
[INFO] [stderr]    |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_temperature`
[INFO] [stderr] 
[INFO] [stderr] warning: irrefutable `if let` pattern
[INFO] [stderr]    --> src/modules/h_flow_of_control/hf_if_let.rs:109:8
[INFO] [stderr]     |
[INFO] [stderr] 109 |     if let Foo2::Bar = a2 {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this pattern will always match, so the `if let` is useless
[INFO] [stderr]     = help: consider replacing the `if let` with a `let`
[INFO] [stderr]     = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `count`
[INFO] [stderr]   --> src/modules/h_flow_of_control/hg_let_else.rs:29:12
[INFO] [stderr]    |
[INFO] [stderr] 29 |     let Ok(count) = u64::from_str(count_str) else {
[INFO] [stderr]    |            ^^^^^ help: if this is intentional, prefix it with an underscore: `_count`
[INFO] [stderr] 
[INFO] [stderr] warning: function `bc_arrays_and_slices` is never used
[INFO] [stderr]   --> src/modules/b_primitives/bc_arrays_and_slices.rs:12:8
[INFO] [stderr]    |
[INFO] [stderr] 12 | pub fn bc_arrays_and_slices() {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: fields `name` and `age` are never read
[INFO] [stderr]   --> src/modules/c_custom_types/ca_structures.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr]  9 | struct Person {
[INFO] [stderr]    |        ------ fields in this struct
[INFO] [stderr] 10 |     name: String,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 11 |     age: u8,
[INFO] [stderr]    |     ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Person` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: `hello-rust` (bin "hello-rust" test) generated 31 warnings (run `cargo fix --bin "hello-rust" -p hello-rust --tests` to apply 23 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/build/hello-rust/f5c27a0c995540d0/out/hello_rust-f5c27a0c995540d0)
[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" "d8cd599a81452a0de1c2f3b5e05e38cec9ffbaf51ce2d6da464d3eeb25e5d192", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8cd599a81452a0de1c2f3b5e05e38cec9ffbaf51ce2d6da464d3eeb25e5d192", kill_on_drop: false }`
[INFO] [stdout] d8cd599a81452a0de1c2f3b5e05e38cec9ffbaf51ce2d6da464d3eeb25e5d192