[INFO] cloning repository https://github.com/vuonghuuhung/rust-bootcamp
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vuonghuuhung/rust-bootcamp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvuonghuuhung%2Frust-bootcamp", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvuonghuuhung%2Frust-bootcamp'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5556c2454bce2ac90897c725164c97613a1348e6
[INFO] checking vuonghuuhung/rust-bootcamp against master#cd805f09ffbfa3896c8f50a619de9b67e1d9f3c3 for pr-135841
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvuonghuuhung%2Frust-bootcamp" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vuonghuuhung/rust-bootcamp on toolchain cd805f09ffbfa3896c8f50a619de9b67e1d9f3c3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cd805f09ffbfa3896c8f50a619de9b67e1d9f3c3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/vuonghuuhung/rust-bootcamp
[INFO] removed 0 missing tests
[INFO] finished tweaking git repo https://github.com/vuonghuuhung/rust-bootcamp
[INFO] tweaked toml for git repo https://github.com/vuonghuuhung/rust-bootcamp written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/vuonghuuhung/rust-bootcamp 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" "+cd805f09ffbfa3896c8f50a619de9b67e1d9f3c3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+cd805f09ffbfa3896c8f50a619de9b67e1d9f3c3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ab591a7a0832ca3c8981563096b81fd10c668d02c4776daeefe651045b0debc8
[INFO] running `Command { std: "docker" "start" "-a" "ab591a7a0832ca3c8981563096b81fd10c668d02c4776daeefe651045b0debc8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ab591a7a0832ca3c8981563096b81fd10c668d02c4776daeefe651045b0debc8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab591a7a0832ca3c8981563096b81fd10c668d02c4776daeefe651045b0debc8", kill_on_drop: false }`
[INFO] [stdout] ab591a7a0832ca3c8981563096b81fd10c668d02c4776daeefe651045b0debc8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+cd805f09ffbfa3896c8f50a619de9b67e1d9f3c3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c57058be08e1f001db083aba017ae1f981375b72771e4140c6e724c0ec51404a
[INFO] running `Command { std: "docker" "start" "-a" "c57058be08e1f001db083aba017ae1f981375b72771e4140c6e724c0ec51404a", kill_on_drop: false }`
[INFO] [stderr]     Checking Rust-Bootcamp-2023 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking basic-of-rust v0.1.0 (/opt/rustwide/workdir/exercises/basic-of-rust)
[INFO] [stderr]     Checking traits v0.1.0 (/opt/rustwide/workdir/exercises/traits)
[INFO] [stderr]     Checking generic-type v0.1.0 (/opt/rustwide/workdir/exercises/generic-type)
[INFO] [stderr]     Checking complex-type v0.1.0 (/opt/rustwide/workdir/exercises/complex-type)
[INFO] [stderr]     Checking error-handling v0.1.0 (/opt/rustwide/workdir/exercises/error-handling)
[INFO] [stdout] warning: unused variable: `integer`
[INFO] [stdout]  --> exercises/generic-type/src/lib.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let integer = Point { x: 5, y: 10 };
[INFO] [stdout]   |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_integer`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking ownership-borrowing v0.1.0 (/opt/rustwide/workdir/exercises/ownership-borrowing)
[INFO] [stdout] warning: unused variable: `float`
[INFO] [stdout]  --> exercises/generic-type/src/lib.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let float = Point { x: 1.0, y: 4.0 };
[INFO] [stdout]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_float`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p`
[INFO] [stdout]   --> exercises/generic-type/src/lib.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let p = Point{x: 5, y : "hello".to_string()};
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `bigger` is never used
[INFO] [stdout]  --> exercises/basic-of-rust/src/conditions.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn bigger(a: i32, b: i32) -> i32 {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `check_number` is never used
[INFO] [stdout]   --> exercises/basic-of-rust/src/conditions.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn check_number(number: i32) -> &'static str {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `foo_if_fizz` is never used
[INFO] [stdout]   --> exercises/basic-of-rust/src/conditions.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub fn foo_if_fizz(fizzish: &str) -> &str {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_leap_year` is never used
[INFO] [stdout]   --> exercises/basic-of-rust/src/conditions.rs:45:4
[INFO] [stdout]    |
[INFO] [stdout] 45 | fn is_leap_year(year: i32) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `factorial` is never used
[INFO] [stdout]   --> exercises/basic-of-rust/src/conditions.rs:58:4
[INFO] [stdout]    |
[INFO] [stdout] 58 | fn factorial(n: u32) -> u32 {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_prime` is never used
[INFO] [stdout]   --> exercises/basic-of-rust/src/conditions.rs:69:4
[INFO] [stdout]    |
[INFO] [stdout] 69 | fn is_prime(n: u32) -> bool {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise2` is never used
[INFO] [stdout]  --> exercises/basic-of-rust/src/strings.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn exercise2() -> String {
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise3` is never used
[INFO] [stdout]   --> exercises/basic-of-rust/src/strings.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn exercise3() -> String {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reverse_string` is never used
[INFO] [stdout]   --> exercises/basic-of-rust/src/strings.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn reverse_string(input: &str) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise1` is never used
[INFO] [stdout]  --> exercises/generic-type/src/lib.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn exercise1() {
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_palindrome` is never used
[INFO] [stdout]   --> exercises/basic-of-rust/src/strings.rs:34:4
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn is_palindrome(word: &str) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `count_char_occurrences` is never used
[INFO] [stdout]   --> exercises/basic-of-rust/src/strings.rs:41:4
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn count_char_occurrences(string: &str, ch: char) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sum` is never used
[INFO] [stdout]  --> exercises/basic-of-rust/src/functions.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn sum(x: i32, y: i32)-> i32 {
[INFO] [stdout]   |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sum_one_to_n` is never used
[INFO] [stdout]   --> exercises/basic-of-rust/src/functions.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn sum_one_to_n(n: u32) -> u32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `calculate_average` is never used
[INFO] [stdout]   --> exercises/basic-of-rust/src/functions.rs:29:4
[INFO] [stdout]    |
[INFO] [stdout] 29 | fn calculate_average(numbers: &[f64]) -> f64 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sum_even_numbers` is never used
[INFO] [stdout]   --> exercises/basic-of-rust/src/functions.rs:48:4
[INFO] [stdout]    |
[INFO] [stdout] 48 | fn sum_even_numbers(numbers: &[i32]) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]   --> exercises/generic-type/src/lib.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct Point<T, U> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise2` is never used
[INFO] [stdout]   --> exercises/generic-type/src/lib.rs:17:4
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn exercise2() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Val` is never constructed
[INFO] [stdout]   --> exercises/generic-type/src/lib.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | struct Val<T> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `value` is never used
[INFO] [stdout]   --> exercises/generic-type/src/lib.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | impl<T> Val<T> {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] 31 |     fn value(&self) -> &T {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise3` is never used
[INFO] [stdout]   --> exercises/generic-type/src/lib.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn exercise3() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_max` is never used
[INFO] [stdout]   --> exercises/generic-type/src/lib.rs:48:4
[INFO] [stdout]    |
[INFO] [stdout] 48 | fn find_max<T: Ord>(collection: &[T]) -> Option<&T> {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reverse_collection` is never used
[INFO] [stdout]   --> exercises/generic-type/src/lib.rs:68:4
[INFO] [stdout]    |
[INFO] [stdout] 68 | fn reverse_collection<T>(collection: &mut Vec<T>) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `contains_value` is never used
[INFO] [stdout]   --> exercises/generic-type/src/lib.rs:77:4
[INFO] [stdout]    |
[INFO] [stdout] 77 | fn contains_value<T: PartialEq>(collection: &[T], value: &T) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `moved_field`
[INFO] [stdout]    --> exercises/complex-type/src/structs.rs:125:9
[INFO] [stdout]     |
[INFO] [stdout] 125 |     let moved_field = moved.str_val.to_owned();
[INFO] [stdout]     |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_moved_field`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Hello` is never used
[INFO] [stdout]  --> exercises/traits/src/lib.rs:7:7
[INFO] [stdout]   |
[INFO] [stdout] 7 | trait Hello {
[INFO] [stdout]   |       ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Student` is never constructed
[INFO] [stdout]   --> exercises/traits/src/lib.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | struct Student {}
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Teacher` is never constructed
[INFO] [stdout]   --> exercises/traits/src/lib.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | struct Teacher {}
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]   --> exercises/traits/src/lib.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | struct Point {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sum` is never used
[INFO] [stdout]   --> exercises/traits/src/lib.rs:53:4
[INFO] [stdout]    |
[INFO] [stdout] 53 | fn sum<T: Add<Output = T>>(x: T, y: T) -> T {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Foo` is never used
[INFO] [stdout]   --> exercises/traits/src/lib.rs:62:7
[INFO] [stdout]    |
[INFO] [stdout] 62 | trait Foo {
[INFO] [stdout]    |       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `static_dispatch` is never used
[INFO] [stdout]   --> exercises/traits/src/lib.rs:79:4
[INFO] [stdout]    |
[INFO] [stdout] 79 | fn static_dispatch<T: Foo>(x: T) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Person` is never constructed
[INFO] [stdout]  --> exercises/complex-type/src/structs.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Person {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `dynamic_dispatch` is never used
[INFO] [stdout]   --> exercises/traits/src/lib.rs:84:4
[INFO] [stdout]    |
[INFO] [stdout] 84 | fn dynamic_dispatch(x: &dyn Foo) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Draw` is never used
[INFO] [stdout]   --> exercises/traits/src/lib.rs:92:7
[INFO] [stdout]    |
[INFO] [stdout] 92 | trait Draw {
[INFO] [stdout]    |       ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `draw_with_box` is never used
[INFO] [stdout]    --> exercises/traits/src/lib.rs:108:4
[INFO] [stdout]     |
[INFO] [stdout] 108 | fn draw_with_box(x: Box<dyn Draw>) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise1` is never used
[INFO] [stdout]   --> exercises/complex-type/src/structs.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn exercise1() -> Person {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Agent` is never constructed
[INFO] [stdout]   --> exercises/complex-type/src/structs.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | struct Agent {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `draw_with_ref` is never used
[INFO] [stdout]    --> exercises/traits/src/lib.rs:112:4
[INFO] [stdout]     |
[INFO] [stdout] 112 | fn draw_with_ref(x: &dyn Draw) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `get_name`, and `get_age` are never used
[INFO] [stdout]   --> exercises/complex-type/src/structs.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 34 | impl Agent {
[INFO] [stdout]    | ---------- associated items in this implementation
[INFO] [stdout] 35 |     // Create a new Person instance
[INFO] [stdout] 36 |     fn new(name: String, age: u32) -> Agent {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 41 |     fn get_name(&self) -> &str {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 46 |     fn get_age(&self) -> u32 {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Calculator` is never constructed
[INFO] [stdout]   --> exercises/complex-type/src/structs.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 55 | struct Calculator {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `add`, `subtract`, `clear`, and `get_value` are never used
[INFO] [stdout]   --> exercises/complex-type/src/structs.rs:60:8
[INFO] [stdout]    |
[INFO] [stdout] 59 | impl Calculator {
[INFO] [stdout]    | --------------- associated items in this implementation
[INFO] [stdout] 60 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 64 |     fn add(&mut self, num: i32) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 68 |     fn subtract(&mut self, num: i32) {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 72 |     fn clear(&mut self) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 76 |     fn get_value(&self) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `User` is never constructed
[INFO] [stdout]   --> exercises/complex-type/src/structs.rs:84:8
[INFO] [stdout]    |
[INFO] [stdout] 84 | struct User {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise4` is never used
[INFO] [stdout]   --> exercises/complex-type/src/structs.rs:90:4
[INFO] [stdout]    |
[INFO] [stdout] 90 | fn exercise4() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Foo` is never constructed
[INFO] [stdout]    --> exercises/complex-type/src/structs.rs:107:8
[INFO] [stdout]     |
[INFO] [stdout] 107 | struct Foo {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise5` is never used
[INFO] [stdout]    --> exercises/complex-type/src/structs.rs:112:4
[INFO] [stdout]     |
[INFO] [stdout] 112 | fn exercise5() {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Package` is never constructed
[INFO] [stdout]    --> exercises/complex-type/src/structs.rs:134:8
[INFO] [stdout]     |
[INFO] [stdout] 134 | struct Package {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `is_international`, and `get_fees` are never used
[INFO] [stdout]    --> exercises/complex-type/src/structs.rs:141:8
[INFO] [stdout]     |
[INFO] [stdout] 140 | impl Package {
[INFO] [stdout]     | ------------ associated items in this implementation
[INFO] [stdout] 141 |     fn new(sender_country: String, recipient_country: String, weight_in_grams: i32) -> Package {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 153 |     fn is_international(&self) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 157 |     fn get_fees(&self, cents_per_gram: i32) -> i32 {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `MessageOne` is never used
[INFO] [stdout]  --> exercises/complex-type/src/enums.rs:5:6
[INFO] [stdout]   |
[INFO] [stdout] 5 | enum MessageOne {
[INFO] [stdout]   |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `show_message` is never used
[INFO] [stdout]   --> exercises/complex-type/src/enums.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn show_message(msg: MessageOne) {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise1` is never used
[INFO] [stdout]   --> exercises/complex-type/src/enums.rs:15:4
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn exercise1() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Message` is never used
[INFO] [stdout]   --> exercises/complex-type/src/enums.rs:31:6
[INFO] [stdout]    |
[INFO] [stdout] 31 | enum Message {
[INFO] [stdout]    |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]   --> exercises/complex-type/src/enums.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | struct Point {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `State` is never constructed
[INFO] [stdout]   --> exercises/complex-type/src/enums.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | struct State {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `change_color`, `quit`, `echo`, `move_position`, and `process` are never used
[INFO] [stdout]   --> exercises/complex-type/src/enums.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 49 | impl State {
[INFO] [stdout]    | ---------- methods in this implementation
[INFO] [stdout] 50 |     fn change_color(&mut self, color: (u8, u8, u8)) {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 54 |     fn quit(&mut self) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 58 |     fn echo(&self, s: String) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 62 |     fn move_position(&mut self, p: Point) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 66 |     fn process(&mut self, message: Message) {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Direction` is never used
[INFO] [stdout]   --> exercises/complex-type/src/enums.rs:85:6
[INFO] [stdout]    |
[INFO] [stdout] 85 | enum Direction {
[INFO] [stdout]    |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `opposite` is never used
[INFO] [stdout]   --> exercises/complex-type/src/enums.rs:93:8
[INFO] [stdout]    |
[INFO] [stdout] 92 | impl Direction {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] 93 |     fn opposite(&self) -> Direction {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Operation` is never used
[INFO] [stdout]    --> exercises/complex-type/src/enums.rs:108:6
[INFO] [stdout]     |
[INFO] [stdout] 108 | enum Operation {
[INFO] [stdout]     |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `perform_operation` is never used
[INFO] [stdout]    --> exercises/complex-type/src/enums.rs:116:4
[INFO] [stdout]     |
[INFO] [stdout] 116 | fn perform_operation(operation: Operation, num1: f64, num2: f64) -> f64 {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Container` is never used
[INFO] [stdout]    --> exercises/traits/src/lib.rs:120:7
[INFO] [stdout]     |
[INFO] [stdout] 120 | trait Container {
[INFO] [stdout]     |       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Stack` is never constructed
[INFO] [stdout]    --> exercises/traits/src/lib.rs:127:8
[INFO] [stdout]     |
[INFO] [stdout] 127 | struct Stack {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `moved_field`
[INFO] [stdout]    --> exercises/complex-type/src/structs.rs:125:9
[INFO] [stdout]     |
[INFO] [stdout] 125 |     let moved_field = moved.str_val.to_owned();
[INFO] [stdout]     |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_moved_field`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `generate_nametag_text` is never used
[INFO] [stdout]  --> exercises/error-handling/src/lib.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn generate_nametag_text(name: String) -> Result<String, String> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `User` is never constructed
[INFO] [stdout]   --> exercises/complex-type/src/structs.rs:84:8
[INFO] [stdout]    |
[INFO] [stdout] 84 | struct User {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise4` is never used
[INFO] [stdout]   --> exercises/complex-type/src/structs.rs:90:4
[INFO] [stdout]    |
[INFO] [stdout] 90 | fn exercise4() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Foo` is never constructed
[INFO] [stdout]    --> exercises/complex-type/src/structs.rs:107:8
[INFO] [stdout]     |
[INFO] [stdout] 107 | struct Foo {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise5` is never used
[INFO] [stdout]    --> exercises/complex-type/src/structs.rs:112:4
[INFO] [stdout]     |
[INFO] [stdout] 112 | fn exercise5() {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_number` is never used
[INFO] [stdout]   --> exercises/error-handling/src/lib.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn parse_number(s: &str) -> Result<i32, ParseIntError> {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PositiveNonzeroInteger` is never constructed
[INFO] [stdout]   --> exercises/error-handling/src/lib.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | struct PositiveNonzeroInteger(u64);
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `CreationError` is never used
[INFO] [stdout]   --> exercises/error-handling/src/lib.rs:30:6
[INFO] [stdout]    |
[INFO] [stdout] 30 | enum CreationError {
[INFO] [stdout]    |      ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> exercises/error-handling/src/lib.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 35 | impl PositiveNonzeroInteger {
[INFO] [stdout]    | --------------------------- associated function in this implementation
[INFO] [stdout] 36 |     fn new(value: i64) -> Result<PositiveNonzeroInteger, CreationError> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking state-machine-atm v0.1.0 (/opt/rustwide/workdir/final-project/state-machine-atm)
[INFO] [stdout] warning: unused variable: `integer`
[INFO] [stdout]  --> exercises/generic-type/src/lib.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let integer = Point { x: 5, y: 10 };
[INFO] [stdout]   |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_integer`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `float`
[INFO] [stdout]  --> exercises/generic-type/src/lib.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let float = Point { x: 1.0, y: 4.0 };
[INFO] [stdout]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_float`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p`
[INFO] [stdout]   --> exercises/generic-type/src/lib.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let p = Point{x: 5, y : "hello".to_string()};
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise1` is never used
[INFO] [stdout]  --> exercises/generic-type/src/lib.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn exercise1() {
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]   --> exercises/generic-type/src/lib.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct Point<T, U> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise2` is never used
[INFO] [stdout]   --> exercises/generic-type/src/lib.rs:17:4
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn exercise2() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Val` is never constructed
[INFO] [stdout]   --> exercises/generic-type/src/lib.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | struct Val<T> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `value` is never used
[INFO] [stdout]   --> exercises/generic-type/src/lib.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | impl<T> Val<T> {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] 31 |     fn value(&self) -> &T {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise3` is never used
[INFO] [stdout]   --> exercises/generic-type/src/lib.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn exercise3() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise1` is never used
[INFO] [stdout]  --> exercises/ownership-borrowing/src/lib.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn exercise1() {
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise2` is never used
[INFO] [stdout]   --> exercises/ownership-borrowing/src/lib.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn exercise2() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `take_ownership` is never used
[INFO] [stdout]   --> exercises/ownership-borrowing/src/lib.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn take_ownership(s: String) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise3` is never used
[INFO] [stdout]   --> exercises/ownership-borrowing/src/lib.rs:28:4
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn exercise3() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise4` is never used
[INFO] [stdout]   --> exercises/ownership-borrowing/src/lib.rs:54:4
[INFO] [stdout]    |
[INFO] [stdout] 54 | fn exercise4(value: u32) -> &'static str {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise5` is never used
[INFO] [stdout]   --> exercises/ownership-borrowing/src/lib.rs:63:4
[INFO] [stdout]    |
[INFO] [stdout] 63 | fn exercise5() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise6` is never used
[INFO] [stdout]   --> exercises/ownership-borrowing/src/lib.rs:86:4
[INFO] [stdout]    |
[INFO] [stdout] 86 | fn exercise6() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise7` is never used
[INFO] [stdout]    --> exercises/ownership-borrowing/src/lib.rs:102:4
[INFO] [stdout]     |
[INFO] [stdout] 102 | fn exercise7() {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise8` is never used
[INFO] [stdout]    --> exercises/ownership-borrowing/src/lib.rs:115:4
[INFO] [stdout]     |
[INFO] [stdout] 115 | fn exercise8() {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise1` is never used
[INFO] [stdout]  --> exercises/ownership-borrowing/src/lib.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn exercise1() {
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise2` is never used
[INFO] [stdout]   --> exercises/ownership-borrowing/src/lib.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn exercise2() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `take_ownership` is never used
[INFO] [stdout]   --> exercises/ownership-borrowing/src/lib.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn take_ownership(s: String) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise3` is never used
[INFO] [stdout]   --> exercises/ownership-borrowing/src/lib.rs:28:4
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn exercise3() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise4` is never used
[INFO] [stdout]   --> exercises/ownership-borrowing/src/lib.rs:54:4
[INFO] [stdout]    |
[INFO] [stdout] 54 | fn exercise4(value: u32) -> &'static str {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise5` is never used
[INFO] [stdout]   --> exercises/ownership-borrowing/src/lib.rs:63:4
[INFO] [stdout]    |
[INFO] [stdout] 63 | fn exercise5() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise6` is never used
[INFO] [stdout]   --> exercises/ownership-borrowing/src/lib.rs:86:4
[INFO] [stdout]    |
[INFO] [stdout] 86 | fn exercise6() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise7` is never used
[INFO] [stdout]    --> exercises/ownership-borrowing/src/lib.rs:102:4
[INFO] [stdout]     |
[INFO] [stdout] 102 | fn exercise7() {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise8` is never used
[INFO] [stdout]    --> exercises/ownership-borrowing/src/lib.rs:115:4
[INFO] [stdout]     |
[INFO] [stdout] 115 | fn exercise8() {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pin_hash`
[INFO] [stdout]   --> final-project/state-machine-atm/src/atm.rs:91:13
[INFO] [stdout]    |
[INFO] [stdout] 91 |         let pin_hash = hash(&pin);
[INFO] [stdout]    |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_pin_hash`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `keystroke_register`
[INFO] [stdout]   --> final-project/state-machine-atm/src/atm.rs:98:21
[INFO] [stdout]    |
[INFO] [stdout] 98 |                     keystroke_register,
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^ help: try ignoring the field: `keystroke_register: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `next_state` is never used
[INFO] [stdout]   --> final-project/state-machine-atm/src/traits.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 5  | pub trait StateMachine {
[INFO] [stdout]    |           ------------ associated function in this trait
[INFO] [stdout] ...
[INFO] [stdout] 13 |     fn next_state(starting_state: &Self::State, t: &Self::Transition) -> Self::State;
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `SwipeCard` and `PressKey` are never constructed
[INFO] [stdout]   --> final-project/state-machine-atm/src/atm.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub enum Action {
[INFO] [stdout]    |          ------ variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 22 |     SwipeCard(u64),
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 23 |     /// Press a key on the keypad
[INFO] [stdout] 24 |     PressKey(Key),
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `MessageOne` is never used
[INFO] [stdout]  --> exercises/complex-type/src/enums.rs:5:6
[INFO] [stdout]   |
[INFO] [stdout] 5 | enum MessageOne {
[INFO] [stdout]   |      ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `show_message` is never used
[INFO] [stdout]   --> exercises/complex-type/src/enums.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn show_message(msg: MessageOne) {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise1` is never used
[INFO] [stdout]   --> exercises/complex-type/src/enums.rs:15:4
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn exercise1() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pin_hash`
[INFO] [stdout]   --> final-project/state-machine-atm/src/atm.rs:91:13
[INFO] [stdout]    |
[INFO] [stdout] 91 |         let pin_hash = hash(&pin);
[INFO] [stdout]    |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_pin_hash`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `keystroke_register`
[INFO] [stdout]   --> final-project/state-machine-atm/src/atm.rs:98:21
[INFO] [stdout]    |
[INFO] [stdout] 98 |                     keystroke_register,
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^ help: try ignoring the field: `keystroke_register: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `moved_field`
[INFO] [stdout]    --> exercises/complex-type/src/structs.rs:125:9
[INFO] [stdout]     |
[INFO] [stdout] 125 |     let moved_field = moved.str_val.to_owned();
[INFO] [stdout]     |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_moved_field`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `integer`
[INFO] [stdout]  --> exercises/generic-type/src/lib.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let integer = Point { x: 5, y: 10 };
[INFO] [stdout]   |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_integer`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `float`
[INFO] [stdout]  --> exercises/generic-type/src/lib.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let float = Point { x: 1.0, y: 4.0 };
[INFO] [stdout]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_float`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p`
[INFO] [stdout]   --> exercises/generic-type/src/lib.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let p = Point{x: 5, y : "hello".to_string()};
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pin_hash`
[INFO] [stdout]   --> final-project/state-machine-atm/src/atm.rs:91:13
[INFO] [stdout]    |
[INFO] [stdout] 91 |         let pin_hash = hash(&pin);
[INFO] [stdout]    |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_pin_hash`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `keystroke_register`
[INFO] [stdout]   --> final-project/state-machine-atm/src/atm.rs:98:21
[INFO] [stdout]    |
[INFO] [stdout] 98 |                     keystroke_register,
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^ help: try ignoring the field: `keystroke_register: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise1` is never used
[INFO] [stdout]  --> exercises/generic-type/src/lib.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn exercise1() {
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]   --> exercises/generic-type/src/lib.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct Point<T, U> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise2` is never used
[INFO] [stdout]   --> exercises/generic-type/src/lib.rs:17:4
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn exercise2() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Val` is never constructed
[INFO] [stdout]   --> exercises/generic-type/src/lib.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | struct Val<T> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `value` is never used
[INFO] [stdout]   --> exercises/generic-type/src/lib.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | impl<T> Val<T> {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] 31 |     fn value(&self) -> &T {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise3` is never used
[INFO] [stdout]   --> exercises/generic-type/src/lib.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn exercise3() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `User` is never constructed
[INFO] [stdout]   --> exercises/complex-type/src/structs.rs:84:8
[INFO] [stdout]    |
[INFO] [stdout] 84 | struct User {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise4` is never used
[INFO] [stdout]   --> exercises/complex-type/src/structs.rs:90:4
[INFO] [stdout]    |
[INFO] [stdout] 90 | fn exercise4() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Foo` is never constructed
[INFO] [stdout]    --> exercises/complex-type/src/structs.rs:107:8
[INFO] [stdout]     |
[INFO] [stdout] 107 | struct Foo {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise5` is never used
[INFO] [stdout]    --> exercises/complex-type/src/structs.rs:112:4
[INFO] [stdout]     |
[INFO] [stdout] 112 | fn exercise5() {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `MessageOne` is never used
[INFO] [stdout]  --> exercises/complex-type/src/enums.rs:5:6
[INFO] [stdout]   |
[INFO] [stdout] 5 | enum MessageOne {
[INFO] [stdout]   |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `show_message` is never used
[INFO] [stdout]   --> exercises/complex-type/src/enums.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn show_message(msg: MessageOne) {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise1` is never used
[INFO] [stdout]   --> exercises/complex-type/src/enums.rs:15:4
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn exercise1() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.20s
[INFO] running `Command { std: "docker" "inspect" "c57058be08e1f001db083aba017ae1f981375b72771e4140c6e724c0ec51404a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c57058be08e1f001db083aba017ae1f981375b72771e4140c6e724c0ec51404a", kill_on_drop: false }`
[INFO] [stdout] c57058be08e1f001db083aba017ae1f981375b72771e4140c6e724c0ec51404a