[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] cbed87a3fceced1b752c5579da7510ae2721465e
[INFO] checking fatah4561/learn-rust against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffatah4561%2Flearn-rust" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fatah4561/learn-rust on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-7-tc1/source/Cargo.toml
[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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ferris-says v0.3.1
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4efab90ba326a9083df6ba684b23995c08819deb4c4905d5cfe5c2ab57e8300c
[INFO] running `Command { std: "docker" "start" "-a" "4efab90ba326a9083df6ba684b23995c08819deb4c4905d5cfe5c2ab57e8300c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4efab90ba326a9083df6ba684b23995c08819deb4c4905d5cfe5c2ab57e8300c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4efab90ba326a9083df6ba684b23995c08819deb4c4905d5cfe5c2ab57e8300c", kill_on_drop: false }`
[INFO] [stdout] 4efab90ba326a9083df6ba684b23995c08819deb4c4905d5cfe5c2ab57e8300c
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b5cb980b5e805c953362f41839efd9c1eddbf200285ddd7ff38702b8fdd36aca
[INFO] running `Command { std: "docker" "start" "-a" "b5cb980b5e805c953362f41839efd9c1eddbf200285ddd7ff38702b8fdd36aca", kill_on_drop: false }`
[INFO] [stderr]     Checking unicode-width v0.1.13
[INFO] [stderr]     Checking smawk v0.3.2
[INFO] [stderr]     Checking smallvec v1.13.2
[INFO] [stderr]     Checking textwrap v0.13.4
[INFO] [stderr]     Checking ferris-says v0.3.1
[INFO] [stderr]     Checking 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)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[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)]` 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)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
[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)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
[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)]` 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)]` 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)]` 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)]` 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: `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: `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: `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: `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: `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: 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)]` 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: 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)]` 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: `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: `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: 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: 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: 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)]` 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] [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)]` 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] [stdout] warning: 30 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 30 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.35s
[INFO] running `Command { std: "docker" "inspect" "b5cb980b5e805c953362f41839efd9c1eddbf200285ddd7ff38702b8fdd36aca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5cb980b5e805c953362f41839efd9c1eddbf200285ddd7ff38702b8fdd36aca", kill_on_drop: false }`
[INFO] [stdout] b5cb980b5e805c953362f41839efd9c1eddbf200285ddd7ff38702b8fdd36aca
[INFO] checking fatah4561/learn-rust against try#f9935d29d867449445ee008640ccca1bf1ae0889+rustflags=-Dtail_expr_drop_order for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffatah4561%2Flearn-rust" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fatah4561/learn-rust on toolchain f9935d29d867449445ee008640ccca1bf1ae0889
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f9935d29d867449445ee008640ccca1bf1ae0889" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-7-tc2/source/Cargo.toml
[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" "+f9935d29d867449445ee008640ccca1bf1ae0889" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+f9935d29d867449445ee008640ccca1bf1ae0889" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 55efdffe2706b943db26157d876c13bfb29aab2cebad70f2c7675ae8d3b0d7bd
[INFO] running `Command { std: "docker" "start" "-a" "55efdffe2706b943db26157d876c13bfb29aab2cebad70f2c7675ae8d3b0d7bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "55efdffe2706b943db26157d876c13bfb29aab2cebad70f2c7675ae8d3b0d7bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "55efdffe2706b943db26157d876c13bfb29aab2cebad70f2c7675ae8d3b0d7bd", kill_on_drop: false }`
[INFO] [stdout] 55efdffe2706b943db26157d876c13bfb29aab2cebad70f2c7675ae8d3b0d7bd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Dtail_expr_drop_order" "-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+f9935d29d867449445ee008640ccca1bf1ae0889" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b0a0514b3ae54a0762f2735fd5727830eca98bb17d20feea918c5e553163888e
[INFO] running `Command { std: "docker" "start" "-a" "b0a0514b3ae54a0762f2735fd5727830eca98bb17d20feea918c5e553163888e", kill_on_drop: false }`
[INFO] [stderr]     Checking smawk v0.3.2
[INFO] [stderr]     Checking unicode-width v0.1.13
[INFO] [stderr]     Checking smallvec v1.13.2
[INFO] [stderr]     Checking textwrap v0.13.4
[INFO] [stderr]     Checking ferris-says v0.3.1
[INFO] [stderr]     Checking 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)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[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)]` 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)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
[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)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
[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)]` 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)]` 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)]` 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: `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)]` on by default
[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)]` 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: 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: 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)]` 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] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]   --> src/modules/c_custom_types/cbc_testcase_linked_list.rs:25:20
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn prepend(self, elem: u32) -> List {
[INFO] [stdout]    |                ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 24 |         // cons also has type list
[INFO] [stdout] 25 |         Cons(elem, Box::new(self))
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout]    = note: requested on the command line with `-D tail-expr-drop-order`
[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)]` 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] error: aborting due to 1 previous error; 30 warnings emitted
[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] [stderr] error: could not compile `hello-rust` (bin "hello-rust") due to 2 previous errors; 30 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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)]` 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] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]   --> src/modules/c_custom_types/cbc_testcase_linked_list.rs:25:20
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn prepend(self, elem: u32) -> List {
[INFO] [stdout]    |                ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 24 |         // cons also has type list
[INFO] [stdout] 25 |         Cons(elem, Box::new(self))
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout]    = note: requested on the command line with `-D tail-expr-drop-order`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error; 30 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `hello-rust` (bin "hello-rust" test) due to 2 previous errors; 30 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "b0a0514b3ae54a0762f2735fd5727830eca98bb17d20feea918c5e553163888e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b0a0514b3ae54a0762f2735fd5727830eca98bb17d20feea918c5e553163888e", kill_on_drop: false }`
[INFO] [stdout] b0a0514b3ae54a0762f2735fd5727830eca98bb17d20feea918c5e553163888e