[INFO] cloning repository https://github.com/zhafir1321/belajar-rust-dasar
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zhafir1321/belajar-rust-dasar" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzhafir1321%2Fbelajar-rust-dasar", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzhafir1321%2Fbelajar-rust-dasar'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5c65a54fef3e31e3b3de28db611120d4bf482305
[INFO] checking zhafir1321/belajar-rust-dasar against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145342-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzhafir1321%2Fbelajar-rust-dasar" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/zhafir1321/belajar-rust-dasar
[INFO] finished tweaking git repo https://github.com/zhafir1321/belajar-rust-dasar
[INFO] tweaked toml for git repo https://github.com/zhafir1321/belajar-rust-dasar written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/zhafir1321/belajar-rust-dasar on toolchain 350d0ef0ec0493e6d21cfb265cb8211a0e74d766
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/zhafir1321/belajar-rust-dasar 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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 56e9f9be681b84eaea40c81e07697815ec084203c8f02e5adcd04e8099bd978e
[INFO] running `Command { std: "docker" "start" "-a" "56e9f9be681b84eaea40c81e07697815ec084203c8f02e5adcd04e8099bd978e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "56e9f9be681b84eaea40c81e07697815ec084203c8f02e5adcd04e8099bd978e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56e9f9be681b84eaea40c81e07697815ec084203c8f02e5adcd04e8099bd978e", kill_on_drop: false }`
[INFO] [stdout] 56e9f9be681b84eaea40c81e07697815ec084203c8f02e5adcd04e8099bd978e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 10e19bd3ca9ec5807097719340dc5dc9a48292fa1d253f48ba0a7bae38e127fe
[INFO] running `Command { std: "docker" "start" "-a" "10e19bd3ca9ec5807097719340dc5dc9a48292fa1d253f48ba0a7bae38e127fe", kill_on_drop: false }`
[INFO] [stderr]     Checking belajar-rust-dasar v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `iter`
[INFO] [stdout]     --> src/main.rs:1184:5
[INFO] [stdout]      |
[INFO] [stdout] 1184 |     iter,
[INFO] [stdout]      |     ^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `model::User`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use model::User; // Importing the User struct from the model module
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `first::say_hello`
[INFO] [stdout]   --> src/main.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | use first::say_hello;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `second::say_hello as say_hello_second`
[INFO] [stdout]   --> src/main.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | use second::say_hello as say_hello_second; // Renaming the function to avoid conflict
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BTreeMap`, `HashMap`, `HashSet`, `LinkedList`, `VecDeque`, and `iter`
[INFO] [stdout]     --> src/main.rs:1182:19
[INFO] [stdout]      |
[INFO] [stdout] 1182 |     collections::{BTreeMap, HashMap, HashSet, LinkedList, VecDeque},
[INFO] [stdout]      |                   ^^^^^^^^  ^^^^^^^  ^^^^^^^  ^^^^^^^^^^  ^^^^^^^^
[INFO] [stdout] 1183 |     fmt::{Debug, Formatter},
[INFO] [stdout] 1184 |     iter,
[INFO] [stdout]      |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::BTreeSet`
[INFO] [stdout]     --> src/main.rs:1397:5
[INFO] [stdout]      |
[INFO] [stdout] 1397 | use std::collections::BTreeSet; // Importing BTreeSet to store unique values in sorted order
[INFO] [stdout]      |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `hi_macro`
[INFO] [stdout]     --> src/main.rs:1930:14
[INFO] [stdout]      |
[INFO] [stdout] 1930 | macro_rules! hi_macro {
[INFO] [stdout]      |              ^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `iterates`
[INFO] [stdout]     --> src/main.rs:1948:14
[INFO] [stdout]      |
[INFO] [stdout] 1948 | macro_rules! iterates {
[INFO] [stdout]      |              ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `username` is never read
[INFO] [stdout]    --> src/main.rs:241:13
[INFO] [stdout]     |
[INFO] [stdout] 241 |     let mut username: &str = "Zhafir Hafidz"; // still in a memory location, but mutable
[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[E0133]: use of mutable static is unsafe and requires unsafe block
[INFO] [stdout]     --> src/main.rs:1895:5
[INFO] [stdout]      |
[INFO] [stdout] 1895 |     COUNTER += 1;
[INFO] [stdout]      |     ^^^^^^^ use of mutable static
[INFO] [stdout]      |
[INFO] [stdout]      = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/unsafe-op-in-unsafe-fn.html>
[INFO] [stdout]      = note: mutable statics can be mutated by multiple threads: aliasing violations or data races will cause undefined behavior
[INFO] [stdout] note: an unsafe function restricts its caller, but its body is safe by default
[INFO] [stdout]     --> src/main.rs:1894:1
[INFO] [stdout]      |
[INFO] [stdout] 1894 | unsafe fn increment() {
[INFO] [stdout]      | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      = note: `#[warn(unsafe_op_in_unsafe_fn)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `unit` is never used
[INFO] [stdout]    --> src/main.rs:161:4
[INFO] [stdout]     |
[INFO] [stdout] 161 | fn unit() {
[INFO] [stdout]     |    ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MAXIMUM` is never used
[INFO] [stdout]    --> src/main.rs:224:7
[INFO] [stdout]     |
[INFO] [stdout] 224 | const MAXIMUM: i32 = 100; // A constant value that cannot be changed
[INFO] [stdout]     |       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_number` is never used
[INFO] [stdout]    --> src/main.rs:392:4
[INFO] [stdout]     |
[INFO] [stdout] 392 | fn print_number(number: i32) {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `hi` is never used
[INFO] [stdout]    --> src/main.rs:396:4
[INFO] [stdout]     |
[INFO] [stdout] 396 | fn hi(name: String) {
[INFO] [stdout]     |    ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `full_name` is never used
[INFO] [stdout]    --> src/main.rs:411:4
[INFO] [stdout]     |
[INFO] [stdout] 411 | fn full_name(first_name: String, last_name: String) -> (String, String, String) {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reference` is never used
[INFO] [stdout]    --> src/main.rs:430:4
[INFO] [stdout]     |
[INFO] [stdout] 430 | fn reference(first_name: &String, last_name: &String) -> String {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `mutable_reference` is never used
[INFO] [stdout]    --> src/main.rs:448:4
[INFO] [stdout]     |
[INFO] [stdout] 448 | fn mutable_reference(first_name: &mut String, last_name: &mut String) -> String {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Person` is never constructed
[INFO] [stdout]    --> src/main.rs:503:8
[INFO] [stdout]     |
[INFO] [stdout] 503 | struct Person {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_person` is never used
[INFO] [stdout]    --> src/main.rs:509:4
[INFO] [stdout]     |
[INFO] [stdout] 509 | fn print_person(person: &Person) {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `GeoPoint` is never constructed
[INFO] [stdout]    --> src/main.rs:555:8
[INFO] [stdout]     |
[INFO] [stdout] 555 | struct GeoPoint(f64, f64);
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/main.rs:558:8
[INFO] [stdout]     |
[INFO] [stdout] 557 | impl GeoPoint {
[INFO] [stdout]     | ------------- associated function in this implementation
[INFO] [stdout] 558 |     fn new(long: f64, lat: f64) -> GeoPoint {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Nothing` is never constructed
[INFO] [stdout]    --> src/main.rs:570:8
[INFO] [stdout]     |
[INFO] [stdout] 570 | struct Nothing; // Unit struct with no fields
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `say_hello` is never used
[INFO] [stdout]    --> src/main.rs:579:8
[INFO] [stdout]     |
[INFO] [stdout] 578 | impl Person {
[INFO] [stdout]     | ----------- method in this implementation
[INFO] [stdout] 579 |     fn say_hello(&self, name: &str) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Level` is never used
[INFO] [stdout]    --> src/main.rs:608:6
[INFO] [stdout]     |
[INFO] [stdout] 608 | enum Level {
[INFO] [stdout]     |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Payment` is never used
[INFO] [stdout]    --> src/main.rs:626:6
[INFO] [stdout]     |
[INFO] [stdout] 626 | enum Payment {
[INFO] [stdout]     |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `pay` is never used
[INFO] [stdout]    --> src/main.rs:641:8
[INFO] [stdout]     |
[INFO] [stdout] 640 | impl Payment {
[INFO] [stdout]     | ------------ method in this implementation
[INFO] [stdout] 641 |     fn pay(&self, amount: u32) {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Age` is never used
[INFO] [stdout]    --> src/main.rs:793:6
[INFO] [stdout]     |
[INFO] [stdout] 793 | type Age = u8; // Type alias for u8, making it easier to read and understand
[INFO] [stdout]     |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `IdentityNumber` is never used
[INFO] [stdout]    --> src/main.rs:794:6
[INFO] [stdout]     |
[INFO] [stdout] 794 | type IdentityNumber = String; // Type alias for String, representing an identity number
[INFO] [stdout]     |      ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Customer` is never constructed
[INFO] [stdout]    --> src/main.rs:796:8
[INFO] [stdout]     |
[INFO] [stdout] 796 | struct Customer {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Pelanggan` is never used
[INFO] [stdout]    --> src/main.rs:802:6
[INFO] [stdout]     |
[INFO] [stdout] 802 | type Pelanggan = Customer; // Type alias for Customer, making it easier to read and understand
[INFO] [stdout]     |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `CanSayHello` is never used
[INFO] [stdout]    --> src/main.rs:819:7
[INFO] [stdout]     |
[INFO] [stdout] 819 | trait CanSayHello {
[INFO] [stdout]     |       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `CanSayGoodBye` is never used
[INFO] [stdout]    --> src/main.rs:827:7
[INFO] [stdout]     |
[INFO] [stdout] 827 | trait CanSayGoodBye {
[INFO] [stdout]     |       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `say_hello_trait` is never used
[INFO] [stdout]    --> src/main.rs:888:4
[INFO] [stdout]     |
[INFO] [stdout] 888 | fn say_hello_trait(person: &impl CanSayHello) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `say_hello_goodbye_trait` is never used
[INFO] [stdout]    --> src/main.rs:893:4
[INFO] [stdout]     |
[INFO] [stdout] 893 | fn say_hello_goodbye_trait(value: &(impl CanSayHello + CanSayGoodBye)) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SimplePerson` is never constructed
[INFO] [stdout]    --> src/main.rs:924:8
[INFO] [stdout]     |
[INFO] [stdout] 924 | struct SimplePerson {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_person` is never used
[INFO] [stdout]    --> src/main.rs:949:4
[INFO] [stdout]     |
[INFO] [stdout] 949 | fn create_person(name: String) -> impl CanSayGoodBye {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `CanSay` is never used
[INFO] [stdout]    --> src/main.rs:963:7
[INFO] [stdout]     |
[INFO] [stdout] 963 | trait CanSay: CanSayHello + CanSayGoodBye {
[INFO] [stdout]     |       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `say_hello_goodbye` is never used
[INFO] [stdout]    --> src/main.rs:976:4
[INFO] [stdout]     |
[INFO] [stdout] 976 | fn say_hello_goodbye(person: &impl CanSay) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]    --> src/main.rs:989:8
[INFO] [stdout]     |
[INFO] [stdout] 989 | struct Point<T> {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `get_x` and `get_y` are never used
[INFO] [stdout]     --> src/main.rs:995:8
[INFO] [stdout]      |
[INFO] [stdout]  994 | impl<T> Point<T> {
[INFO] [stdout]      | ---------------- methods in this implementation
[INFO] [stdout]  995 |     fn get_x(&self) -> &T {
[INFO] [stdout]      |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 1000 |     fn get_y(&self) -> &T {
[INFO] [stdout]      |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Value` is never used
[INFO] [stdout]     --> src/main.rs:1015:6
[INFO] [stdout]      |
[INFO] [stdout] 1015 | enum Value<T> {
[INFO] [stdout]      |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Hi` is never constructed
[INFO] [stdout]     --> src/main.rs:1036:8
[INFO] [stdout]      |
[INFO] [stdout] 1036 | struct Hi<T: CanSayGoodBye> {
[INFO] [stdout]      |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `min` is never used
[INFO] [stdout]     --> src/main.rs:1050:4
[INFO] [stdout]      |
[INFO] [stdout] 1050 | fn min<T: PartialOrd>(value1: T, value2: T) -> T {
[INFO] [stdout]      |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `GetValue` is never used
[INFO] [stdout]     --> src/main.rs:1079:7
[INFO] [stdout]      |
[INFO] [stdout] 1079 | trait GetValue<T> {
[INFO] [stdout]      |       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Apple` is never constructed
[INFO] [stdout]     --> src/main.rs:1091:8
[INFO] [stdout]      |
[INFO] [stdout] 1091 | struct Apple {
[INFO] [stdout]      |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `double` is never used
[INFO] [stdout]     --> src/main.rs:1114:4
[INFO] [stdout]      |
[INFO] [stdout] 1114 | fn double(value: Option<i32>) -> Option<i32> {
[INFO] [stdout]      |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Category` is never constructed
[INFO] [stdout]     --> src/main.rs:1187:8
[INFO] [stdout]      |
[INFO] [stdout] 1187 | struct Category {
[INFO] [stdout]      |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_with_filter` is never used
[INFO] [stdout]     --> src/main.rs:1223:4
[INFO] [stdout]      |
[INFO] [stdout] 1223 | fn print_with_filter(value: String, filter: fn(String) -> String) {
[INFO] [stdout]      |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `to_uppercase` is never used
[INFO] [stdout]     --> src/main.rs:1239:4
[INFO] [stdout]      |
[INFO] [stdout] 1239 | fn to_uppercase(value: String) -> String {
[INFO] [stdout]      |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Counter` is never constructed
[INFO] [stdout]     --> src/main.rs:1263:8
[INFO] [stdout]      |
[INFO] [stdout] 1263 | struct Counter {
[INFO] [stdout]      |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `increment` is never used
[INFO] [stdout]     --> src/main.rs:1268:8
[INFO] [stdout]      |
[INFO] [stdout] 1267 | impl Counter {
[INFO] [stdout]      | ------------ method in this implementation
[INFO] [stdout] 1268 |     fn increment(&mut self) {
[INFO] [stdout]      |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `connect_database` is never used
[INFO] [stdout]     --> src/main.rs:1453:4
[INFO] [stdout]      |
[INFO] [stdout] 1453 | fn connect_database(host: Option<String>) {
[INFO] [stdout]      |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `connect_cache` is never used
[INFO] [stdout]     --> src/main.rs:1470:4
[INFO] [stdout]      |
[INFO] [stdout] 1470 | fn connect_cache(host: Option<String>) -> Result<String, String> {
[INFO] [stdout]      |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `connect_email` is never used
[INFO] [stdout]     --> src/main.rs:1486:4
[INFO] [stdout]      |
[INFO] [stdout] 1486 | fn connect_email(host: Option<String>) -> Result<String, String> {
[INFO] [stdout]      |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `connect_application` is never used
[INFO] [stdout]     --> src/main.rs:1493:4
[INFO] [stdout]      |
[INFO] [stdout] 1493 | fn connect_application(host: Option<String>) -> Result<String, String> {
[INFO] [stdout]      |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `longest` is never used
[INFO] [stdout]     --> src/main.rs:1527:4
[INFO] [stdout]      |
[INFO] [stdout] 1527 | fn longest<'a>(value1: &'a str, value2: &'a str) -> &'a str {
[INFO] [stdout]      |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Student` is never constructed
[INFO] [stdout]     --> src/main.rs:1559:8
[INFO] [stdout]      |
[INFO] [stdout] 1559 | struct Student<'a> {
[INFO] [stdout]      |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `longest_student_name` is never used
[INFO] [stdout]     --> src/main.rs:1564:4
[INFO] [stdout]      |
[INFO] [stdout] 1564 | fn longest_student_name<'a>(student1: &Student<'a>, student2: &Student<'a>) -> &'a str {
[INFO] [stdout]      |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `longest_name` is never used
[INFO] [stdout]     --> src/main.rs:1574:8
[INFO] [stdout]      |
[INFO] [stdout] 1573 | impl<'a> Student<'a> {
[INFO] [stdout]      | -------------------- method in this implementation
[INFO] [stdout] 1574 |     fn longest_name(&self, student: &Student<'a>) -> &'a str {
[INFO] [stdout]      |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Teacher` is never constructed
[INFO] [stdout]     --> src/main.rs:1608:8
[INFO] [stdout]      |
[INFO] [stdout] 1608 | struct Teacher<'a, ID>
[INFO] [stdout]      |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Company` is never constructed
[INFO] [stdout]     --> src/main.rs:1628:8
[INFO] [stdout]      |
[INFO] [stdout] 1628 | struct Company {
[INFO] [stdout]      |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `display_number` is never used
[INFO] [stdout]     --> src/main.rs:1674:4
[INFO] [stdout]      |
[INFO] [stdout] 1674 | fn display_number(value: i32) {
[INFO] [stdout]      |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `display_number_reference` is never used
[INFO] [stdout]     --> src/main.rs:1678:4
[INFO] [stdout]      |
[INFO] [stdout] 1678 | fn display_number_reference(value: &i32) {
[INFO] [stdout]      |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ProductCategory` is never used
[INFO] [stdout]     --> src/main.rs:1683:6
[INFO] [stdout]      |
[INFO] [stdout] 1683 | enum ProductCategory {
[INFO] [stdout]      |      ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MyValue` is never constructed
[INFO] [stdout]     --> src/main.rs:1728:8
[INFO] [stdout]      |
[INFO] [stdout] 1728 | struct MyValue<T> {
[INFO] [stdout]      |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `say_hello_reference` is never used
[INFO] [stdout]     --> src/main.rs:1756:4
[INFO] [stdout]      |
[INFO] [stdout] 1756 | fn say_hello_reference(name: &String) {
[INFO] [stdout]      |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Book` is never constructed
[INFO] [stdout]     --> src/main.rs:1777:8
[INFO] [stdout]      |
[INFO] [stdout] 1777 | struct Book {
[INFO] [stdout]      |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Brand` is never used
[INFO] [stdout]     --> src/main.rs:1812:6
[INFO] [stdout]      |
[INFO] [stdout] 1812 | enum Brand {
[INFO] [stdout]      |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Seller` is never constructed
[INFO] [stdout]     --> src/main.rs:1854:8
[INFO] [stdout]      |
[INFO] [stdout] 1854 | struct Seller {
[INFO] [stdout]      |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `APPLICATION` is never used
[INFO] [stdout]     --> src/main.rs:1886:8
[INFO] [stdout]      |
[INFO] [stdout] 1886 | static APPLICATION: &str = "My application";
[INFO] [stdout]      |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `COUNTER` is never used
[INFO] [stdout]     --> src/main.rs:1892:12
[INFO] [stdout]      |
[INFO] [stdout] 1892 | static mut COUNTER: u32 = 0;
[INFO] [stdout]      |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `increment` is never used
[INFO] [stdout]     --> src/main.rs:1894:11
[INFO] [stdout]      |
[INFO] [stdout] 1894 | unsafe fn increment() {
[INFO] [stdout]      |           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `say_hello` is never used
[INFO] [stdout]  --> src/first.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn say_hello() {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `say_hello` is never used
[INFO] [stdout]   --> src/first.rs:13:16
[INFO] [stdout]    |
[INFO] [stdout] 13 |         pub fn say_hello() {
[INFO] [stdout]    |                ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `User` is never constructed
[INFO] [stdout]  --> src/model.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct User {
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `say_hello` is never used
[INFO] [stdout]  --> src/model.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | impl User {
[INFO] [stdout]   | --------- method in this implementation
[INFO] [stdout] 8 |     pub fn say_hello(&self, name: &str) {
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `say_hello` is never used
[INFO] [stdout]  --> src/second.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn say_hello() {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `say_hello` is never used
[INFO] [stdout]  --> src/third.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn say_hello() {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0133`.
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/main.rs:769:9
[INFO] [stdout]     |
[INFO] [stdout] 765 |         GeoPoint(long, _) => {
[INFO] [stdout]     |         ----------------- matches any value
[INFO] [stdout] ...
[INFO] [stdout] 769 |         GeoPoint(_, lat) => {
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/main.rs:773:9
[INFO] [stdout]     |
[INFO] [stdout] 765 |         GeoPoint(long, _) => {
[INFO] [stdout]     |         ----------------- matches any value
[INFO] [stdout] ...
[INFO] [stdout] 773 |         _ => {
[INFO] [stdout]     |         ^ no value can reach this
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]     --> src/main.rs:1518:13
[INFO] [stdout]      |
[INFO] [stdout] 1518 |         let x = 42; // Creating a variable x with a value of 42
[INFO] [stdout]      |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `laptop`
[INFO] [stdout]     --> src/main.rs:1823:9
[INFO] [stdout]      |
[INFO] [stdout] 1823 |     let laptop: Brand = Brand::Of("Laptop".to_string(), Rc::clone(&apple));
[INFO] [stdout]      |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_laptop`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `smartphone`
[INFO] [stdout]     --> src/main.rs:1827:9
[INFO] [stdout]      |
[INFO] [stdout] 1827 |     let smartphone: Brand = Brand::Of("Smartphone".to_string(), Rc::clone(&apple));
[INFO] [stdout]      |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_smartphone`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning[E0133]: use of mutable static is unsafe and requires unsafe block
[INFO] [stdout]     --> src/main.rs:1895:5
[INFO] [stdout]      |
[INFO] [stdout] 1895 |     COUNTER += 1;
[INFO] [stdout]      |     ^^^^^^^ use of mutable static
[INFO] [stdout]      |
[INFO] [stdout]      = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/unsafe-op-in-unsafe-fn.html>
[INFO] [stdout]      = note: mutable statics can be mutated by multiple threads: aliasing violations or data races will cause undefined behavior
[INFO] [stdout] note: an unsafe function restricts its caller, but its body is safe by default
[INFO] [stdout]     --> src/main.rs:1894:1
[INFO] [stdout]      |
[INFO] [stdout] 1894 | unsafe fn increment() {
[INFO] [stdout]      | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      = note: `#[warn(unsafe_op_in_unsafe_fn)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Beginner` and `Advanced` are never constructed
[INFO] [stdout]    --> src/main.rs:609:5
[INFO] [stdout]     |
[INFO] [stdout] 608 | enum Level {
[INFO] [stdout]     |      ----- variants in this enum
[INFO] [stdout] 609 |     Beginner,
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout] 610 |     Intermediate,
[INFO] [stdout] 611 |     Advanced,
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Pelanggan` is never used
[INFO] [stdout]    --> src/main.rs:802:6
[INFO] [stdout]     |
[INFO] [stdout] 802 | type Pelanggan = Customer; // Type alias for Customer, making it easier to read and understand
[INFO] [stdout]     |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `NONE` is never constructed
[INFO] [stdout]     --> src/main.rs:1016:5
[INFO] [stdout]      |
[INFO] [stdout] 1015 | enum Value<T> {
[INFO] [stdout]      |      ----- variant in this enum
[INFO] [stdout] 1016 |     NONE,
[INFO] [stdout]      |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]     --> src/main.rs:1684:8
[INFO] [stdout]      |
[INFO] [stdout] 1684 |     Of(String, Box<ProductCategory>),
[INFO] [stdout]      |     -- ^^^^^^  ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |     |
[INFO] [stdout]      |     fields in this variant
[INFO] [stdout]      |
[INFO] [stdout]      = note: `ProductCategory` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]      |
[INFO] [stdout] 1684 -     Of(String, Box<ProductCategory>),
[INFO] [stdout] 1684 +     Of((), ()),
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]     --> src/main.rs:1813:8
[INFO] [stdout]      |
[INFO] [stdout] 1813 |     Of(String, Rc<Brand>),
[INFO] [stdout]      |     -- ^^^^^^  ^^^^^^^^^
[INFO] [stdout]      |     |
[INFO] [stdout]      |     fields in this variant
[INFO] [stdout]      |
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]      |
[INFO] [stdout] 1813 -     Of(String, Rc<Brand>),
[INFO] [stdout] 1813 +     Of((), ()),
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `active` is never read
[INFO] [stdout]     --> src/main.rs:1856:5
[INFO] [stdout]      |
[INFO] [stdout] 1854 | struct Seller {
[INFO] [stdout]      |        ------ field in this struct
[INFO] [stdout] 1855 |     name: RefCell<String>,
[INFO] [stdout] 1856 |     active: RefCell<bool>,
[INFO] [stdout]      |     ^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `Seller` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `say_hello` is never used
[INFO] [stdout]   --> src/first.rs:13:16
[INFO] [stdout]    |
[INFO] [stdout] 13 |         pub fn say_hello() {
[INFO] [stdout]    |                ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `email` is never read
[INFO] [stdout]  --> src/model.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct User {
[INFO] [stdout]   |            ---- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 4 |     pub email: String,
[INFO] [stdout]   |         ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0133`.
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `Command { std: "docker" "inspect" "10e19bd3ca9ec5807097719340dc5dc9a48292fa1d253f48ba0a7bae38e127fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10e19bd3ca9ec5807097719340dc5dc9a48292fa1d253f48ba0a7bae38e127fe", kill_on_drop: false }`
[INFO] [stdout] 10e19bd3ca9ec5807097719340dc5dc9a48292fa1d253f48ba0a7bae38e127fe