[INFO] cloning repository https://github.com/c-n-o-t-e/learningRust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/c-n-o-t-e/learningRust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fc-n-o-t-e%2FlearningRust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fc-n-o-t-e%2FlearningRust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8a9b60ddb0887e8454808f033574c5b4517691a4
[INFO] checking c-n-o-t-e/learningRust against master#f8f6997469237299c1d60814c7b9828602a1f8e4 for pr-143808
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fc-n-o-t-e%2FlearningRust" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/c-n-o-t-e/learningRust
[INFO] finished tweaking git repo https://github.com/c-n-o-t-e/learningRust
[INFO] tweaked toml for git repo https://github.com/c-n-o-t-e/learningRust written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/c-n-o-t-e/learningRust on toolchain f8f6997469237299c1d60814c7b9828602a1f8e4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f8f6997469237299c1d60814c7b9828602a1f8e4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/c-n-o-t-e/learningRust 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" "+f8f6997469237299c1d60814c7b9828602a1f8e4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+f8f6997469237299c1d60814c7b9828602a1f8e4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 558be4f5742056b6d6b889adb8aec04b9fddc2a1318c39c2f53715bc9a13be95
[INFO] running `Command { std: "docker" "start" "-a" "558be4f5742056b6d6b889adb8aec04b9fddc2a1318c39c2f53715bc9a13be95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "558be4f5742056b6d6b889adb8aec04b9fddc2a1318c39c2f53715bc9a13be95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "558be4f5742056b6d6b889adb8aec04b9fddc2a1318c39c2f53715bc9a13be95", kill_on_drop: false }`
[INFO] [stdout] 558be4f5742056b6d6b889adb8aec04b9fddc2a1318c39c2f53715bc9a13be95
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+f8f6997469237299c1d60814c7b9828602a1f8e4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5af47b4d8b36bfe06763567c5b5c2402af4c1e63fa39446906b3e7dfe9ab5023
[INFO] running `Command { std: "docker" "start" "-a" "5af47b4d8b36bfe06763567c5b5c2402af4c1e63fa39446906b3e7dfe9ab5023", kill_on_drop: false }`
[INFO] [stderr]     Checking array_tool v1.0.3
[INFO] [stderr]     Checking learn_rust999999911111999 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `id`, `name`, and `email` are never read
[INFO] [stdout]   --> src/lib.rs:58:9
[INFO] [stdout]    |
[INFO] [stdout] 57 |     pub struct Customer {
[INFO] [stdout]    |                -------- fields in this struct
[INFO] [stdout] 58 |         id: u64,
[INFO] [stdout]    |         ^^
[INFO] [stdout] 59 |         name: String,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 60 |         email: String,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id` and `customer` are never read
[INFO] [stdout]   --> src/lib.rs:74:9
[INFO] [stdout]    |
[INFO] [stdout] 73 |     pub struct Order {
[INFO] [stdout]    |                ----- fields in this struct
[INFO] [stdout] 74 |         id: u64,
[INFO] [stdout]    |         ^^
[INFO] [stdout] 75 |         product: Product,
[INFO] [stdout] 76 |         customer: Customer,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id`, `name`, and `email` are never read
[INFO] [stdout]   --> src/lib.rs:58:9
[INFO] [stdout]    |
[INFO] [stdout] 57 |     pub struct Customer {
[INFO] [stdout]    |                -------- fields in this struct
[INFO] [stdout] 58 |         id: u64,
[INFO] [stdout]    |         ^^
[INFO] [stdout] 59 |         name: String,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 60 |         email: String,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id` and `customer` are never read
[INFO] [stdout]   --> src/lib.rs:74:9
[INFO] [stdout]    |
[INFO] [stdout] 73 |     pub struct Order {
[INFO] [stdout]    |                ----- fields in this struct
[INFO] [stdout] 74 |         id: u64,
[INFO] [stdout]    |         ^^
[INFO] [stdout] 75 |         product: Product,
[INFO] [stdout] 76 |         customer: Customer,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `model` is never read
[INFO] [stdout]   --> src/bin/traitsTask.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | struct Car {
[INFO] [stdout]    |        --- field in this struct
[INFO] [stdout] 10 |     model: String,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `brand` is never read
[INFO] [stdout]   --> src/bin/traitsTask.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | struct Bicycle {
[INFO] [stdout]    |        ------- field in this struct
[INFO] [stdout] 22 |     brand: String,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `model` is never read
[INFO] [stdout]   --> src/bin/traitsTask.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | struct Bus {
[INFO] [stdout]    |        --- field in this struct
[INFO] [stdout] 28 |     model: String,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `salary` is never read
[INFO] [stdout]  --> src/bin/function_pointers.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct User {
[INFO] [stdout]   |        ---- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 7 |     salary: u32,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p1`
[INFO] [stdout]   --> src/bin/generics.rs:35:21
[INFO] [stdout]    |
[INFO] [stdout] 35 | fn add_points<T, U>(p1: &Point<T, U>, p2: &Point<T, U>) -> Point<T, U> {
[INFO] [stdout]    |                     ^^ help: if this is intentional, prefix it with an underscore: `_p1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p2`
[INFO] [stdout]   --> src/bin/generics.rs:35:39
[INFO] [stdout]    |
[INFO] [stdout] 35 | fn add_points<T, U>(p1: &Point<T, U>, p2: &Point<T, U>) -> Point<T, U> {
[INFO] [stdout]    |                                       ^^ help: if this is intentional, prefix it with an underscore: `_p2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p1`
[INFO] [stdout]   --> src/bin/generics.rs:39:19
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn add_points_i32(p1: &Point<i32, i32>, p2: &Point<i32, i32>) -> Point<i32, i32> {
[INFO] [stdout]    |                   ^^ help: if this is intentional, prefix it with an underscore: `_p1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p2`
[INFO] [stdout]   --> src/bin/generics.rs:39:41
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn add_points_i32(p1: &Point<i32, i32>, p2: &Point<i32, i32>) -> Point<i32, i32> {
[INFO] [stdout]    |                                         ^^ help: if this is intentional, prefix it with an underscore: `_p2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p1`
[INFO] [stdout]   --> src/bin/generics.rs:43:19
[INFO] [stdout]    |
[INFO] [stdout] 43 | fn add_points_f64(p1: &Point<f64, f64>, p2: &Point<f64, f64>) -> Point<f64, f64> {
[INFO] [stdout]    |                   ^^ help: if this is intentional, prefix it with an underscore: `_p1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p2`
[INFO] [stdout]   --> src/bin/generics.rs:43:41
[INFO] [stdout]    |
[INFO] [stdout] 43 | fn add_points_f64(p1: &Point<f64, f64>, p2: &Point<f64, f64>) -> Point<f64, f64> {
[INFO] [stdout]    |                                         ^^ help: if this is intentional, prefix it with an underscore: `_p2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p2`
[INFO] [stdout]   --> src/bin/generics.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let p2 = Point::new(5, 5.0);
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_p2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new_1` is never used
[INFO] [stdout]   --> src/bin/generics.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl Point<i32, i32> {
[INFO] [stdout]    | -------------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 24 |     fn new_1(x: i32, y: i32) -> Point<i32, i32> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `printing` is never used
[INFO] [stdout]   --> src/bin/generics.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 29 | impl Point<f64, f64> {
[INFO] [stdout]    | -------------------- method in this implementation
[INFO] [stdout] 30 |     fn printing(&self) {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_points_i32` is never used
[INFO] [stdout]   --> src/bin/generics.rs:39:4
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn add_points_i32(p1: &Point<i32, i32>, p2: &Point<i32, i32>) -> Point<i32, i32> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_points_f64` is never used
[INFO] [stdout]   --> src/bin/generics.rs:43:4
[INFO] [stdout]    |
[INFO] [stdout] 43 | fn add_points_f64(p1: &Point<f64, f64>, p2: &Point<f64, f64>) -> Point<f64, f64> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result`
[INFO] [stdout]  --> src/bin/combinators_task.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let mut result = 0;
[INFO] [stdout]   |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `line_width` and `color` are never read
[INFO] [stdout]  --> src/bin/super_traits.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Square {
[INFO] [stdout]   |        ------ fields in this struct
[INFO] [stdout] 6 |     side: f32,
[INFO] [stdout] 7 |     line_width: u8,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 8 |     color: String,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/bin/combinators_task.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let mut result = 0;
[INFO] [stdout]   |         ----^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]   --> src/bin/traits_associated_types.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Km {
[INFO] [stdout]    |        -- field in this struct
[INFO] [stdout] 12 |     value: u32,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Km` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `title`, `author`, and `genre` are never read
[INFO] [stdout]   --> src/bin/intoIter.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct Book {
[INFO] [stdout]    |        ---- fields in this struct
[INFO] [stdout] 14 |     title: String,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 15 |     author: String,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 16 |     genre: String,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Book` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::primitive`
[INFO] [stdout]  --> src/bin/optionAndResult.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::primitive;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `line_width` and `color` are never read
[INFO] [stdout]   --> src/bin/super_traits.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Rectangle {
[INFO] [stdout]    |        --------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 14 |     line_width: u8,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 15 |     color: String,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]   --> src/bin/traits_associated_types.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | struct Miles {
[INFO] [stdout]    |        ----- field in this struct
[INFO] [stdout] 22 |     value: u32,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Miles` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `draw_object` is never used
[INFO] [stdout]   --> src/bin/super_traits.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | trait Draw {
[INFO] [stdout]    |       ---- method in this trait
[INFO] [stdout] 19 |     fn draw_object(&self);
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `returns_shape` is never used
[INFO] [stdout]   --> src/bin/super_traits.rs:76:4
[INFO] [stdout]    |
[INFO] [stdout] 76 | fn returns_shape() -> impl Shape {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `speed_Kmh` should have a snake case name
[INFO] [stdout]   --> src/bin/traits_associated_types.rs:69:9
[INFO] [stdout]    |
[INFO] [stdout] 69 |     let speed_Kmh = Kmh { value: 90 };
[INFO] [stdout]    |         ^^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `speed_kmh`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `distance_Km` should have a snake case name
[INFO] [stdout]   --> src/bin/traits_associated_types.rs:70:9
[INFO] [stdout]    |
[INFO] [stdout] 70 |     let distance_Km = speed_Kmh.distance_in_three_hours();
[INFO] [stdout]    |         ^^^^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `distance_km`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `speed_Mph` should have a snake case name
[INFO] [stdout]   --> src/bin/traits_associated_types.rs:77:9
[INFO] [stdout]    |
[INFO] [stdout] 77 |     let speed_Mph = Mph { value: 90 };
[INFO] [stdout]    |         ^^^^^^^^^ help: convert the identifier to snake case: `speed_mph`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `distance_Miles` should have a snake case name
[INFO] [stdout]   --> src/bin/traits_associated_types.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |     let distance_Miles = speed_Mph.distance_in_three_hours();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^ help: convert the identifier to snake case: `distance_miles`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/hashMapsTask.rs:70:5
[INFO] [stdout]    |
[INFO] [stdout] 70 | /     student_database.add_student(Student {
[INFO] [stdout] 71 | |         id: 1,
[INFO] [stdout] 72 | |         name: String::from("Victor"),
[INFO] [stdout] 73 | |         grade: 'A',
[INFO] [stdout] 74 | |     });
[INFO] [stdout]    | |______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 70 |     let _ = student_database.add_student(Student {
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `grade` is never read
[INFO] [stdout]   --> src/bin/conditionals.rs:11:13
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let mut grade: char = 'F';
[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 `grade` is never read
[INFO] [stdout]   --> src/bin/conditionals.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     grade = if marks >= 90 {
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/hashMapsTask.rs:70:5
[INFO] [stdout]    |
[INFO] [stdout] 70 | /     student_database.add_student(Student {
[INFO] [stdout] 71 | |         id: 1,
[INFO] [stdout] 72 | |         name: String::from("Victor"),
[INFO] [stdout] 73 | |         grade: 'A',
[INFO] [stdout] 74 | |     });
[INFO] [stdout]    | |______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 70 |     let _ = student_database.add_student(Student {
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Monday`, `Tuesday`, `Wednesday`, `Thursday`, `Friday`, and `Saturday` are never constructed
[INFO] [stdout]  --> src/bin/enums.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum Days {
[INFO] [stdout]   |      ---- variants in this enum
[INFO] [stdout] 3 |     Monday,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 4 |     Tuesday,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 5 |     Wednesday,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 6 |     Thursday,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 7 |     Friday,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 8 |     Saturday,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Days` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Train` is never constructed
[INFO] [stdout]   --> src/bin/enums.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | enum TravelType {
[INFO] [stdout]    |      ---------- variant in this enum
[INFO] [stdout] 13 |     Car(f32),
[INFO] [stdout] 14 |     Train(f32),
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Properties` is never used
[INFO] [stdout]  --> src/bin/traits_derived_and_marker.rs:6:7
[INFO] [stdout]   |
[INFO] [stdout] 6 | trait Properties: PartialEq + Default + Clone {}
[INFO] [stdout]   |       ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `VecContainer_i32` should have an upper camel case name
[INFO] [stdout]   --> src/bin/traits_associated_typesTask.rs:93:8
[INFO] [stdout]    |
[INFO] [stdout] 93 | struct VecContainer_i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `VecContainerI32`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Point_2D` should have an upper camel case name
[INFO] [stdout]   --> src/bin/struct.rs:57:12
[INFO] [stdout]    |
[INFO] [stdout] 57 |     struct Point_2D(i32, i32);
[INFO] [stdout]    |            ^^^^^^^^ help: convert the identifier to upper camel case: `Point2d`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Point_3D` should have an upper camel case name
[INFO] [stdout]   --> src/bin/struct.rs:58:12
[INFO] [stdout]    |
[INFO] [stdout] 58 |     struct Point_3D(i32, i32, i32);
[INFO] [stdout]    |            ^^^^^^^^ help: convert the identifier to upper camel case: `Point3d`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result`
[INFO] [stdout]  --> src/bin/combinators_task.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let mut result = 0;
[INFO] [stdout]   |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c1`
[INFO] [stdout]   --> src/bin/traits_bound.rs:98:9
[INFO] [stdout]    |
[INFO] [stdout] 98 |     let c1 = Circle { radius: 5.0 };
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_c1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `extracted_owner`
[INFO] [stdout]   --> src/bin/struct.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let extracted_owner: String = my_car.owner.clone(); // fix use .clone() or  &String = &my_car.owner
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_extracted_owner`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `point_2D`
[INFO] [stdout]   --> src/bin/struct.rs:54:9
[INFO] [stdout]    |
[INFO] [stdout] 54 |     let point_2D = (1, 3);
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_point_2D`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `point_3D`
[INFO] [stdout]   --> src/bin/struct.rs:55:9
[INFO] [stdout]    |
[INFO] [stdout] 55 |     let point_3D = (12, 33, 12);
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_point_3D`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `point`
[INFO] [stdout]   --> src/bin/struct.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 60 |     let point = Point_2D(1, 3);
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_point`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `point`
[INFO] [stdout]   --> src/bin/struct.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |     let point = Point_3D(2, 33, 12);
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_point`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `new_owner`
[INFO] [stdout]   --> src/bin/struct.rs:69:9
[INFO] [stdout]    |
[INFO] [stdout] 69 |     let new_owner = my_car.sell();
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_owner`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `line_width` and `color` are never read
[INFO] [stdout]  --> src/bin/traits_bound.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Square {
[INFO] [stdout]   |        ------ fields in this struct
[INFO] [stdout] 6 |     side: f32,
[INFO] [stdout] 7 |     line_width: u8,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 8 |     color: String,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `line_width` and `color` are never read
[INFO] [stdout]   --> src/bin/traits_bound.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Rectangle {
[INFO] [stdout]    |        --------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 14 |     line_width: u8,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 15 |     color: String,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `returns_shape` is never used
[INFO] [stdout]   --> src/bin/traits_bound.rs:59:4
[INFO] [stdout]    |
[INFO] [stdout] 59 | fn returns_shape() -> impl Shape {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `radius` is never read
[INFO] [stdout]   --> src/bin/traits_bound.rs:82:5
[INFO] [stdout]    |
[INFO] [stdout] 81 | struct Circle {
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] 82 |     radius: f32,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]  --> src/bin/var.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let a: i32 = 5; // signed 32-bit integer
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `monthly_insurance` and `selling_price` are never used
[INFO] [stdout]   --> src/bin/struct.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 8  | impl Car {
[INFO] [stdout]    | -------- associated items in this implementation
[INFO] [stdout] 9  |     // Associates functions
[INFO] [stdout] 10 |     fn monthly_insurance() -> u32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 14 |     fn selling_price(&self) -> u32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]  --> src/bin/var.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let b: u32 = 5; // unsigned 32-bit integer
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]  --> src/bin/var.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let c: i64 = 5; // signed 64-bit integer
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `d`
[INFO] [stdout]  --> src/bin/var.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let d: u64 = 5; // unsigned 64-bit integer
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_d`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]  --> src/bin/var.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let e: f32 = 5.0; // 32-bit floating point
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/bin/combinators_task.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let mut result = 0;
[INFO] [stdout]   |         ----^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]  --> src/bin/var.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let f: f64 = 5.0; // 64-bit floating point
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `g`
[INFO] [stdout]  --> src/bin/var.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let g: bool = true; // boolean
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_g`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `h`
[INFO] [stdout]   --> src/bin/var.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let h: char = 'a'; // character
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_h`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/bin/var.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let i: &str = "Hello, World!"; // string slice
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `j`
[INFO] [stdout]   --> src/bin/var.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let j: String = String::from("Hello, World!"); // string
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]   --> src/bin/var.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let k: [i32; 5] = [1, 2, 3, 4, 5]; // array
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `l`
[INFO] [stdout]   --> src/bin/var.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let l: (i32, f64, u8) = (500, 6.4, 1); // tuple
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_l`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]   --> src/bin/struct.rs:57:21
[INFO] [stdout]    |
[INFO] [stdout] 57 |     struct Point_2D(i32, i32);
[INFO] [stdout]    |            -------- ^^^  ^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            fields in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing these fields
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `h`
[INFO] [stdout]   --> src/bin/var.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let h: Vec<i32> = Vec::new(); // vector
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_h`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/bin/var.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let n: Option<i32> = Some(5); // option
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `o`
[INFO] [stdout]   --> src/bin/var.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let o: Result<i32, i32> = Ok(5); // result
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_o`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0`, `1`, and `2` are never read
[INFO] [stdout]   --> src/bin/struct.rs:58:21
[INFO] [stdout]    |
[INFO] [stdout] 58 |     struct Point_3D(i32, i32, i32);
[INFO] [stdout]    |            -------- ^^^  ^^^  ^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            fields in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing these fields
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p`
[INFO] [stdout]   --> src/bin/var.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let p: Box<i32> = Box::new(5); // box
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ABC` is never constructed
[INFO] [stdout]   --> src/bin/struct.rs:64:12
[INFO] [stdout]    |
[INFO] [stdout] 64 |     struct ABC;
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `line_width` and `color` are never read
[INFO] [stdout]   --> src/bin/traits.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | struct Square {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 10 |     side: f32,
[INFO] [stdout] 11 |     line_width: u8,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 12 |     color: String,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `line_width` and `color` are never read
[INFO] [stdout]   --> src/bin/traits.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | struct Rectangle {
[INFO] [stdout]    |        --------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 19 |     line_width: u8,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 20 |     color: String,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `VecContainer_i32` should have an upper camel case name
[INFO] [stdout]   --> src/bin/traits_associated_typesTask.rs:93:8
[INFO] [stdout]    |
[INFO] [stdout] 93 | struct VecContainer_i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `VecContainerI32`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `point_2D` should have a snake case name
[INFO] [stdout]   --> src/bin/struct.rs:54:9
[INFO] [stdout]    |
[INFO] [stdout] 54 |     let point_2D = (1, 3);
[INFO] [stdout]    |         ^^^^^^^^ help: convert the identifier to snake case: `point_2_d`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `point_3D` should have a snake case name
[INFO] [stdout]   --> src/bin/struct.rs:55:9
[INFO] [stdout]    |
[INFO] [stdout] 55 |     let point_3D = (12, 33, 12);
[INFO] [stdout]    |         ^^^^^^^^ help: convert the identifier to snake case: `point_3_d`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `double` is never used
[INFO] [stdout]   --> src/bin/functionTask.rs:32:4
[INFO] [stdout]    |
[INFO] [stdout] 32 | fn double(x: i32) -> i32 {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `triple` is never used
[INFO] [stdout]   --> src/bin/functionTask.rs:36:4
[INFO] [stdout]    |
[INFO] [stdout] 36 | fn triple(x: i32) -> i32 {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]  --> src/bin/var.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let a: i32 = 5; // signed 32-bit integer
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]  --> src/bin/var.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let b: u32 = 5; // unsigned 32-bit integer
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]  --> src/bin/var.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let c: i64 = 5; // signed 64-bit integer
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `d`
[INFO] [stdout]  --> src/bin/var.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let d: u64 = 5; // unsigned 64-bit integer
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_d`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]  --> src/bin/var.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let e: f32 = 5.0; // 32-bit floating point
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]  --> src/bin/var.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let f: f64 = 5.0; // 64-bit floating point
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `g`
[INFO] [stdout]  --> src/bin/var.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let g: bool = true; // boolean
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_g`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `h`
[INFO] [stdout]   --> src/bin/var.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let h: char = 'a'; // character
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_h`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/bin/var.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let i: &str = "Hello, World!"; // string slice
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `j`
[INFO] [stdout]   --> src/bin/var.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let j: String = String::from("Hello, World!"); // string
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]   --> src/bin/var.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let k: [i32; 5] = [1, 2, 3, 4, 5]; // array
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `l`
[INFO] [stdout]   --> src/bin/var.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let l: (i32, f64, u8) = (500, 6.4, 1); // tuple
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_l`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `h`
[INFO] [stdout]   --> src/bin/var.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let h: Vec<i32> = Vec::new(); // vector
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_h`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/bin/var.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let n: Option<i32> = Some(5); // option
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `o`
[INFO] [stdout]   --> src/bin/var.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let o: Result<i32, i32> = Ok(5); // result
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_o`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p`
[INFO] [stdout]   --> src/bin/var.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let p: Box<i32> = Box::new(5); // box
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `line_width` and `color` are never read
[INFO] [stdout]   --> src/bin/traits.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | struct Square {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 10 |     side: f32,
[INFO] [stdout] 11 |     line_width: u8,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 12 |     color: String,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `line_width` and `color` are never read
[INFO] [stdout]   --> src/bin/traits.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | struct Rectangle {
[INFO] [stdout]    |        --------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 19 |     line_width: u8,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 20 |     color: String,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `title`, `author`, and `genre` are never read
[INFO] [stdout]   --> src/bin/intoIter.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct Book {
[INFO] [stdout]    |        ---- fields in this struct
[INFO] [stdout] 14 |     title: String,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 15 |     author: String,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 16 |     genre: String,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Book` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Employee_Records` should have an upper camel case name
[INFO] [stdout]   --> src/bin/iterators.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | struct Employee_Records {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `EmployeeRecords`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Properties` is never used
[INFO] [stdout]  --> src/bin/traits_derived_and_marker.rs:6:7
[INFO] [stdout]   |
[INFO] [stdout] 6 | trait Properties: PartialEq + Default + Clone {}
[INFO] [stdout]   |       ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/iterators.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |     let mut emp_1 = Employee {
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/iterators.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |     let mut emp_2 = Employee {
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/iterators.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 47 |     let mut emp_db = Employee_Records {
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name` and `salary` are never read
[INFO] [stdout]   --> src/bin/iterators.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct Employee {
[INFO] [stdout]    |        -------- fields in this struct
[INFO] [stdout] 15 |     name: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 16 |     salary: u16,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Employee` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Magazine` is never constructed
[INFO] [stdout]   --> src/bin/structTask.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | enum ItemType {
[INFO] [stdout]    |      -------- variant in this enum
[INFO] [stdout] 24 |     Book,
[INFO] [stdout] 25 |     Magazine,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ItemType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id`, `title`, `year`, and `type_of_book` are never read
[INFO] [stdout]   --> src/bin/structTask.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | struct Item {
[INFO] [stdout]    |        ---- fields in this struct
[INFO] [stdout] 30 |     id: u32,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 31 |     title: String,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 32 |     year: u32,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 33 |     type_of_book: ItemType,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Item` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `grade` is never read
[INFO] [stdout]   --> src/bin/conditionals.rs:11:13
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let mut grade: char = 'F';
[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 `grade` is never read
[INFO] [stdout]   --> src/bin/conditionals.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     grade = if marks >= 90 {
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `hash::Hash`
[INFO] [stdout]  --> src/bin/hashMaps.rs:1:33
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{collections::HashMap, hash::Hash, vec};
[INFO] [stdout]   |                                 ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `salary` is never read
[INFO] [stdout]  --> src/bin/function_pointers.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct User {
[INFO] [stdout]   |        ---- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 7 |     salary: u32,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `line_width` and `color` are never read
[INFO] [stdout]  --> src/bin/super_traits.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Square {
[INFO] [stdout]   |        ------ fields in this struct
[INFO] [stdout] 6 |     side: f32,
[INFO] [stdout] 7 |     line_width: u8,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 8 |     color: String,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `line_width` and `color` are never read
[INFO] [stdout]   --> src/bin/super_traits.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Rectangle {
[INFO] [stdout]    |        --------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 14 |     line_width: u8,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 15 |     color: String,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `draw_object` is never used
[INFO] [stdout]   --> src/bin/super_traits.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | trait Draw {
[INFO] [stdout]    |       ---- method in this trait
[INFO] [stdout] 19 |     fn draw_object(&self);
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `returns_shape` is never used
[INFO] [stdout]   --> src/bin/super_traits.rs:76:4
[INFO] [stdout]    |
[INFO] [stdout] 76 | fn returns_shape() -> impl Shape {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `hash::Hash`
[INFO] [stdout]  --> src/bin/hashMaps.rs:1:33
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{collections::HashMap, hash::Hash, vec};
[INFO] [stdout]   |                                 ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `double` is never used
[INFO] [stdout]   --> src/bin/functionTask.rs:32:4
[INFO] [stdout]    |
[INFO] [stdout] 32 | fn double(x: i32) -> i32 {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `triple` is never used
[INFO] [stdout]   --> src/bin/functionTask.rs:36:4
[INFO] [stdout]    |
[INFO] [stdout] 36 | fn triple(x: i32) -> i32 {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::primitive`
[INFO] [stdout]  --> src/bin/optionAndResult.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::primitive;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `CircleArea`, `RectangleArea`, and `Perimeter` are never constructed
[INFO] [stdout]  --> src/bin/optionTask.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | enum Measurement {
[INFO] [stdout]   |      ----------- variants in this enum
[INFO] [stdout] 4 |     CircleArea(f64),
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 5 |     RectangleArea(f64, f64),
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 6 |     TriangleArea(f64, f64),
[INFO] [stdout] 7 |     Perimeter(Vec<f64>),
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `line_width` and `color` are never read
[INFO] [stdout]  --> src/bin/traits_object.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Square {
[INFO] [stdout]   |        ------ fields in this struct
[INFO] [stdout] 6 |     side: f32,
[INFO] [stdout] 7 |     line_width: u8,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 8 |     color: String,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `line_width` and `color` are never read
[INFO] [stdout]   --> src/bin/traits_object.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Rectangle {
[INFO] [stdout]    |        --------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 14 |     line_width: u8,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 15 |     color: String,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `draw_object` is never used
[INFO] [stdout]   --> src/bin/traits_object.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | trait Draw {
[INFO] [stdout]    |       ---- method in this trait
[INFO] [stdout] 19 |     fn draw_object(&self);
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `returns_shape` is never used
[INFO] [stdout]   --> src/bin/traits_object.rs:62:4
[INFO] [stdout]    |
[INFO] [stdout] 62 | fn returns_shape(dimension: Vec<f32>) -> Box<dyn Shape> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Circle` is never constructed
[INFO] [stdout]   --> src/bin/traits_object.rs:81:8
[INFO] [stdout]    |
[INFO] [stdout] 81 | struct Circle {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `shape_properties_static` is never used
[INFO] [stdout]   --> src/bin/traits_object.rs:86:4
[INFO] [stdout]    |
[INFO] [stdout] 86 | fn shape_properties_static<T>(object: T)
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Magazine` is never constructed
[INFO] [stdout]   --> src/bin/structTask.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | enum ItemType {
[INFO] [stdout]    |      -------- variant in this enum
[INFO] [stdout] 24 |     Book,
[INFO] [stdout] 25 |     Magazine,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ItemType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id`, `title`, `year`, and `type_of_book` are never read
[INFO] [stdout]   --> src/bin/structTask.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | struct Item {
[INFO] [stdout]    |        ---- fields in this struct
[INFO] [stdout] 30 |     id: u32,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 31 |     title: String,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 32 |     year: u32,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 33 |     type_of_book: ItemType,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Item` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p1`
[INFO] [stdout]   --> src/bin/generics.rs:35:21
[INFO] [stdout]    |
[INFO] [stdout] 35 | fn add_points<T, U>(p1: &Point<T, U>, p2: &Point<T, U>) -> Point<T, U> {
[INFO] [stdout]    |                     ^^ help: if this is intentional, prefix it with an underscore: `_p1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p2`
[INFO] [stdout]   --> src/bin/generics.rs:35:39
[INFO] [stdout]    |
[INFO] [stdout] 35 | fn add_points<T, U>(p1: &Point<T, U>, p2: &Point<T, U>) -> Point<T, U> {
[INFO] [stdout]    |                                       ^^ help: if this is intentional, prefix it with an underscore: `_p2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p1`
[INFO] [stdout]   --> src/bin/generics.rs:39:19
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn add_points_i32(p1: &Point<i32, i32>, p2: &Point<i32, i32>) -> Point<i32, i32> {
[INFO] [stdout]    |                   ^^ help: if this is intentional, prefix it with an underscore: `_p1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p2`
[INFO] [stdout]   --> src/bin/generics.rs:39:41
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn add_points_i32(p1: &Point<i32, i32>, p2: &Point<i32, i32>) -> Point<i32, i32> {
[INFO] [stdout]    |                                         ^^ help: if this is intentional, prefix it with an underscore: `_p2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p1`
[INFO] [stdout]   --> src/bin/generics.rs:43:19
[INFO] [stdout]    |
[INFO] [stdout] 43 | fn add_points_f64(p1: &Point<f64, f64>, p2: &Point<f64, f64>) -> Point<f64, f64> {
[INFO] [stdout]    |                   ^^ help: if this is intentional, prefix it with an underscore: `_p1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p2`
[INFO] [stdout]   --> src/bin/generics.rs:43:41
[INFO] [stdout]    |
[INFO] [stdout] 43 | fn add_points_f64(p1: &Point<f64, f64>, p2: &Point<f64, f64>) -> Point<f64, f64> {
[INFO] [stdout]    |                                         ^^ help: if this is intentional, prefix it with an underscore: `_p2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p2`
[INFO] [stdout]   --> src/bin/generics.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let p2 = Point::new(5, 5.0);
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_p2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new_1` is never used
[INFO] [stdout]   --> src/bin/generics.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl Point<i32, i32> {
[INFO] [stdout]    | -------------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 24 |     fn new_1(x: i32, y: i32) -> Point<i32, i32> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `printing` is never used
[INFO] [stdout]   --> src/bin/generics.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 29 | impl Point<f64, f64> {
[INFO] [stdout]    | -------------------- method in this implementation
[INFO] [stdout] 30 |     fn printing(&self) {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Monday`, `Tuesday`, `Wednesday`, `Thursday`, `Friday`, and `Saturday` are never constructed
[INFO] [stdout]  --> src/bin/enums.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum Days {
[INFO] [stdout]   |      ---- variants in this enum
[INFO] [stdout] 3 |     Monday,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 4 |     Tuesday,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 5 |     Wednesday,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 6 |     Thursday,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 7 |     Friday,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 8 |     Saturday,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Days` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Train` is never constructed
[INFO] [stdout]   --> src/bin/enums.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | enum TravelType {
[INFO] [stdout]    |      ---------- variant in this enum
[INFO] [stdout] 13 |     Car(f32),
[INFO] [stdout] 14 |     Train(f32),
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_points_i32` is never used
[INFO] [stdout]   --> src/bin/generics.rs:39:4
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn add_points_i32(p1: &Point<i32, i32>, p2: &Point<i32, i32>) -> Point<i32, i32> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_points_f64` is never used
[INFO] [stdout]   --> src/bin/generics.rs:43:4
[INFO] [stdout]    |
[INFO] [stdout] 43 | fn add_points_f64(p1: &Point<f64, f64>, p2: &Point<f64, f64>) -> Point<f64, f64> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/bin/iterating_through_collections.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let mut vec_1 = vec![45, 30, 85, 90, 41, 39];
[INFO] [stdout]   |         ----^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `model` is never read
[INFO] [stdout]   --> src/bin/traitsTask.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | struct Car {
[INFO] [stdout]    |        --- field in this struct
[INFO] [stdout] 10 |     model: String,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `brand` is never read
[INFO] [stdout]   --> src/bin/traitsTask.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | struct Bicycle {
[INFO] [stdout]    |        ------- field in this struct
[INFO] [stdout] 22 |     brand: String,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `model` is never read
[INFO] [stdout]   --> src/bin/traitsTask.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | struct Bus {
[INFO] [stdout]    |        --- field in this struct
[INFO] [stdout] 28 |     model: String,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/iterating_though_option.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let mut products = vec!["cellphone", "battery", "charger"];
[INFO] [stdout]    |         ----^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/iterating_though_option.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let mut products = vec!["cellphone", "battery", "charger"];
[INFO] [stdout]    |         ----^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Point_2D` should have an upper camel case name
[INFO] [stdout]   --> src/bin/struct.rs:57:12
[INFO] [stdout]    |
[INFO] [stdout] 57 |     struct Point_2D(i32, i32);
[INFO] [stdout]    |            ^^^^^^^^ help: convert the identifier to upper camel case: `Point2d`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Point_3D` should have an upper camel case name
[INFO] [stdout]   --> src/bin/struct.rs:58:12
[INFO] [stdout]    |
[INFO] [stdout] 58 |     struct Point_3D(i32, i32, i32);
[INFO] [stdout]    |            ^^^^^^^^ help: convert the identifier to upper camel case: `Point3d`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op_1`
[INFO] [stdout]   --> src/bin/genericsTask.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let op_1 = Operation::Addition(5, 10);
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_op_1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op_2`
[INFO] [stdout]   --> src/bin/genericsTask.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let op_2 = Operation::Multiplication(3.5, 2.0);
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_op_2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op_3`
[INFO] [stdout]   --> src/bin/genericsTask.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let op_3 = Operation::Subtraction(3.5, 2.0);
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_op_3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op_4`
[INFO] [stdout]   --> src/bin/genericsTask.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let op_4 = Operation::Division(2, 3);
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_op_4`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `extracted_owner`
[INFO] [stdout]   --> src/bin/struct.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let extracted_owner: String = my_car.owner.clone(); // fix use .clone() or  &String = &my_car.owner
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_extracted_owner`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `point_2D`
[INFO] [stdout]   --> src/bin/struct.rs:54:9
[INFO] [stdout]    |
[INFO] [stdout] 54 |     let point_2D = (1, 3);
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_point_2D`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `point_3D`
[INFO] [stdout]   --> src/bin/struct.rs:55:9
[INFO] [stdout]    |
[INFO] [stdout] 55 |     let point_3D = (12, 33, 12);
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_point_3D`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `point`
[INFO] [stdout]   --> src/bin/struct.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 60 |     let point = Point_2D(1, 3);
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_point`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `point`
[INFO] [stdout]   --> src/bin/struct.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |     let point = Point_3D(2, 33, 12);
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_point`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `new_owner`
[INFO] [stdout]   --> src/bin/struct.rs:69:9
[INFO] [stdout]    |
[INFO] [stdout] 69 |     let new_owner = my_car.sell();
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_owner`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `monthly_insurance` and `selling_price` are never used
[INFO] [stdout]   --> src/bin/struct.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 8  | impl Car {
[INFO] [stdout]    | -------- associated items in this implementation
[INFO] [stdout] 9  |     // Associates functions
[INFO] [stdout] 10 |     fn monthly_insurance() -> u32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 14 |     fn selling_price(&self) -> u32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Employee_Records` should have an upper camel case name
[INFO] [stdout]   --> src/bin/iterators.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | struct Employee_Records {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `EmployeeRecords`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `point_2D` should have a snake case name
[INFO] [stdout]   --> src/bin/struct.rs:54:9
[INFO] [stdout]    |
[INFO] [stdout] 54 |     let point_2D = (1, 3);
[INFO] [stdout]    |         ^^^^^^^^ help: convert the identifier to snake case: `point_2_d`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `point_3D` should have a snake case name
[INFO] [stdout]   --> src/bin/struct.rs:55:9
[INFO] [stdout]    |
[INFO] [stdout] 55 |     let point_3D = (12, 33, 12);
[INFO] [stdout]    |         ^^^^^^^^ help: convert the identifier to snake case: `point_3_d`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/closures.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let mut banned_user = String::from("banned user");
[INFO] [stdout]    |         ----^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `salary` is never read
[INFO] [stdout]  --> src/bin/closures.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct User {
[INFO] [stdout]   |        ---- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 8 |     salary: u32,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/bin/iterating_through_collections.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let mut vec_1 = vec![45, 30, 85, 90, 41, 39];
[INFO] [stdout]   |         ----^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]   --> src/bin/traits_associated_types.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Km {
[INFO] [stdout]    |        -- field in this struct
[INFO] [stdout] 12 |     value: u32,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Km` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]   --> src/bin/traits_associated_types.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | struct Miles {
[INFO] [stdout]    |        ----- field in this struct
[INFO] [stdout] 22 |     value: u32,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Miles` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `speed_Kmh` should have a snake case name
[INFO] [stdout]   --> src/bin/traits_associated_types.rs:69:9
[INFO] [stdout]    |
[INFO] [stdout] 69 |     let speed_Kmh = Kmh { value: 90 };
[INFO] [stdout]    |         ^^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `speed_kmh`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `CircleArea`, `RectangleArea`, and `Perimeter` are never constructed
[INFO] [stdout]  --> src/bin/optionTask.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | enum Measurement {
[INFO] [stdout]   |      ----------- variants in this enum
[INFO] [stdout] 4 |     CircleArea(f64),
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 5 |     RectangleArea(f64, f64),
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 6 |     TriangleArea(f64, f64),
[INFO] [stdout] 7 |     Perimeter(Vec<f64>),
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `distance_Km` should have a snake case name
[INFO] [stdout]   --> src/bin/traits_associated_types.rs:70:9
[INFO] [stdout]    |
[INFO] [stdout] 70 |     let distance_Km = speed_Kmh.distance_in_three_hours();
[INFO] [stdout]    |         ^^^^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `distance_km`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `speed_Mph` should have a snake case name
[INFO] [stdout]   --> src/bin/traits_associated_types.rs:77:9
[INFO] [stdout]    |
[INFO] [stdout] 77 |     let speed_Mph = Mph { value: 90 };
[INFO] [stdout]    |         ^^^^^^^^^ help: convert the identifier to snake case: `speed_mph`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `distance_Miles` should have a snake case name
[INFO] [stdout]   --> src/bin/traits_associated_types.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |     let distance_Miles = speed_Mph.distance_in_three_hours();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^ help: convert the identifier to snake case: `distance_miles`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/iterators.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |     let mut emp_1 = Employee {
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/iterators.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |     let mut emp_2 = Employee {
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/iterators.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 47 |     let mut emp_db = Employee_Records {
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/closures.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let mut banned_user = String::from("banned user");
[INFO] [stdout]    |         ----^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name` and `salary` are never read
[INFO] [stdout]   --> src/bin/iterators.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct Employee {
[INFO] [stdout]    |        -------- fields in this struct
[INFO] [stdout] 15 |     name: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 16 |     salary: u16,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Employee` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `salary` is never read
[INFO] [stdout]  --> src/bin/closures.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct User {
[INFO] [stdout]   |        ---- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 8 |     salary: u32,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op_1`
[INFO] [stdout]   --> src/bin/genericsTask.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let op_1 = Operation::Addition(5, 10);
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_op_1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op_2`
[INFO] [stdout]   --> src/bin/genericsTask.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let op_2 = Operation::Multiplication(3.5, 2.0);
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_op_2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op_3`
[INFO] [stdout]   --> src/bin/genericsTask.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let op_3 = Operation::Subtraction(3.5, 2.0);
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_op_3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op_4`
[INFO] [stdout]   --> src/bin/genericsTask.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let op_4 = Operation::Division(2, 3);
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_op_4`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c1`
[INFO] [stdout]   --> src/bin/traits_bound.rs:98:9
[INFO] [stdout]    |
[INFO] [stdout] 98 |     let c1 = Circle { radius: 5.0 };
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_c1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `line_width` and `color` are never read
[INFO] [stdout]  --> src/bin/traits_bound.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Square {
[INFO] [stdout]   |        ------ fields in this struct
[INFO] [stdout] 6 |     side: f32,
[INFO] [stdout] 7 |     line_width: u8,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 8 |     color: String,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `line_width` and `color` are never read
[INFO] [stdout]   --> src/bin/traits_bound.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Rectangle {
[INFO] [stdout]    |        --------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 14 |     line_width: u8,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 15 |     color: String,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `returns_shape` is never used
[INFO] [stdout]   --> src/bin/traits_bound.rs:59:4
[INFO] [stdout]    |
[INFO] [stdout] 59 | fn returns_shape() -> impl Shape {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `radius` is never read
[INFO] [stdout]   --> src/bin/traits_bound.rs:82:5
[INFO] [stdout]    |
[INFO] [stdout] 81 | struct Circle {
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] 82 |     radius: f32,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `line_width` and `color` are never read
[INFO] [stdout]  --> src/bin/traits_object.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Square {
[INFO] [stdout]   |        ------ fields in this struct
[INFO] [stdout] 6 |     side: f32,
[INFO] [stdout] 7 |     line_width: u8,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 8 |     color: String,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `line_width` and `color` are never read
[INFO] [stdout]   --> src/bin/traits_object.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Rectangle {
[INFO] [stdout]    |        --------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 14 |     line_width: u8,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 15 |     color: String,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `draw_object` is never used
[INFO] [stdout]   --> src/bin/traits_object.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | trait Draw {
[INFO] [stdout]    |       ---- method in this trait
[INFO] [stdout] 19 |     fn draw_object(&self);
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `returns_shape` is never used
[INFO] [stdout]   --> src/bin/traits_object.rs:62:4
[INFO] [stdout]    |
[INFO] [stdout] 62 | fn returns_shape(dimension: Vec<f32>) -> Box<dyn Shape> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Circle` is never constructed
[INFO] [stdout]   --> src/bin/traits_object.rs:81:8
[INFO] [stdout]    |
[INFO] [stdout] 81 | struct Circle {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `shape_properties_static` is never used
[INFO] [stdout]   --> src/bin/traits_object.rs:86:4
[INFO] [stdout]    |
[INFO] [stdout] 86 | fn shape_properties_static<T>(object: T)
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.54s
[INFO] running `Command { std: "docker" "inspect" "5af47b4d8b36bfe06763567c5b5c2402af4c1e63fa39446906b3e7dfe9ab5023", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5af47b4d8b36bfe06763567c5b5c2402af4c1e63fa39446906b3e7dfe9ab5023", kill_on_drop: false }`
[INFO] [stdout] 5af47b4d8b36bfe06763567c5b5c2402af4c1e63fa39446906b3e7dfe9ab5023