[INFO] cloning repository https://github.com/hutomosaktikartiko/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/hutomosaktikartiko/belajar-rust-dasar" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhutomosaktikartiko%2Fbelajar-rust-dasar", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhutomosaktikartiko%2Fbelajar-rust-dasar'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 81053536093801530ae248ab779cf9f074e70622
[INFO] checking hutomosaktikartiko/belajar-rust-dasar against try#e658ebe4ffa1b515cd2ef06dd428d0d063e2ae6b for pr-144896
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhutomosaktikartiko%2Fbelajar-rust-dasar" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/hutomosaktikartiko/belajar-rust-dasar
[INFO] finished tweaking git repo https://github.com/hutomosaktikartiko/belajar-rust-dasar
[INFO] tweaked toml for git repo https://github.com/hutomosaktikartiko/belajar-rust-dasar written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/hutomosaktikartiko/belajar-rust-dasar on toolchain e658ebe4ffa1b515cd2ef06dd428d0d063e2ae6b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e658ebe4ffa1b515cd2ef06dd428d0d063e2ae6b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/hutomosaktikartiko/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" "+e658ebe4ffa1b515cd2ef06dd428d0d063e2ae6b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking hutomosaktikartiko/belajar-rust-dasar against try#e658ebe4ffa1b515cd2ef06dd428d0d063e2ae6b for pr-144896
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhutomosaktikartiko%2Fbelajar-rust-dasar" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/hutomosaktikartiko/belajar-rust-dasar
[INFO] finished tweaking git repo https://github.com/hutomosaktikartiko/belajar-rust-dasar
[INFO] tweaked toml for git repo https://github.com/hutomosaktikartiko/belajar-rust-dasar written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/hutomosaktikartiko/belajar-rust-dasar on toolchain e658ebe4ffa1b515cd2ef06dd428d0d063e2ae6b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e658ebe4ffa1b515cd2ef06dd428d0d063e2ae6b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/hutomosaktikartiko/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" "+e658ebe4ffa1b515cd2ef06dd428d0d063e2ae6b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:ae6f63d130afcfff7f91f5ba9fdb2a74d52830289c6a2ea2d23a94dcfb480a0d" "/opt/rustwide/cargo-home/bin/cargo" "+e658ebe4ffa1b515cd2ef06dd428d0d063e2ae6b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] db40b50fa8f7063ac37c71f14006ad3ecebbc6163459412f0cc7573b5a3f7d3b
[INFO] running `Command { std: "docker" "start" "-a" "db40b50fa8f7063ac37c71f14006ad3ecebbc6163459412f0cc7573b5a3f7d3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "db40b50fa8f7063ac37c71f14006ad3ecebbc6163459412f0cc7573b5a3f7d3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db40b50fa8f7063ac37c71f14006ad3ecebbc6163459412f0cc7573b5a3f7d3b", kill_on_drop: false }`
[INFO] [stdout] db40b50fa8f7063ac37c71f14006ad3ecebbc6163459412f0cc7573b5a3f7d3b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-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:ae6f63d130afcfff7f91f5ba9fdb2a74d52830289c6a2ea2d23a94dcfb480a0d" "/opt/rustwide/cargo-home/bin/cargo" "+e658ebe4ffa1b515cd2ef06dd428d0d063e2ae6b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ab3741b8f99f2d84ea7de5da64ddd1cb9e0f6eeb34691ed105bf70590856e534
[INFO] running `Command { std: "docker" "start" "-a" "ab3741b8f99f2d84ea7de5da64ddd1cb9e0f6eeb34691ed105bf70590856e534", kill_on_drop: false }`
[INFO] [stderr]     Checking belajar-rust-dasar v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `format`
[INFO] [stdout]  --> src/main.rs:6:16
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::fmt::{format, Formatter};
[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:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | 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:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use second::say_hello as say_hello_second;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `model::User`
[INFO] [stdout]   --> src/main.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use model::User;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BTreeMap`, `BTreeSet`, `HashMap`, `HashSet`, `LinkedList`, and `VecDeque`
[INFO] [stdout]     --> src/main.rs:1070:24
[INFO] [stdout]      |
[INFO] [stdout] 1070 | use std::collections::{BTreeMap, BTreeSet, HashMap, HashSet, LinkedList, VecDeque};
[INFO] [stdout]      |                        ^^^^^^^^  ^^^^^^^^  ^^^^^^^  ^^^^^^^  ^^^^^^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::RefMut`
[INFO] [stdout]     --> src/main.rs:1698:5
[INFO] [stdout]      |
[INFO] [stdout] 1698 | use std::cell::RefMut;
[INFO] [stdout]      |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `hi`
[INFO] [stdout]     --> src/main.rs:1744:14
[INFO] [stdout]      |
[INFO] [stdout] 1744 | macro_rules! hi {
[INFO] [stdout]      |              ^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `iterate`
[INFO] [stdout]     --> src/main.rs:1762:14
[INFO] [stdout]      |
[INFO] [stdout] 1762 | macro_rules! iterate {
[INFO] [stdout]      |              ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `format`
[INFO] [stdout]  --> src/main.rs:6:16
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::fmt::{format, Formatter};
[INFO] [stdout]   |                ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]     --> src/main.rs:1581:30
[INFO] [stdout]      |
[INFO] [stdout] 1581 |     display_number_reference((&value));
[INFO] [stdout]      |                              ^      ^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 1581 -     display_number_reference((&value));
[INFO] [stdout] 1581 +     display_number_reference(&value);
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]     --> src/main.rs:1651:25
[INFO] [stdout]      |
[INFO] [stdout] 1651 |     say_hello_reference((&name));
[INFO] [stdout]      |                         ^     ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 1651 -     say_hello_reference((&name));
[INFO] [stdout] 1651 +     say_hello_reference(&name);
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `unit` is never used
[INFO] [stdout]    --> src/main.rs:170:4
[INFO] [stdout]     |
[INFO] [stdout] 170 | 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:212:7
[INFO] [stdout]     |
[INFO] [stdout] 212 | const MAXIMUM: i32 = 100;
[INFO] [stdout]     |       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `function_a` is never used
[INFO] [stdout]    --> src/main.rs:240:4
[INFO] [stdout]     |
[INFO] [stdout] 240 | fn function_a() {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `function_b` is never used
[INFO] [stdout]    --> src/main.rs:246:4
[INFO] [stdout]     |
[INFO] [stdout] 246 | fn function_b() {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `say_goodbye` is never used
[INFO] [stdout]    --> src/main.rs:443:4
[INFO] [stdout]     |
[INFO] [stdout] 443 | fn say_goodbye(name: &str) {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `factorial_loop` is never used
[INFO] [stdout]    --> src/main.rs:453:4
[INFO] [stdout]     |
[INFO] [stdout] 453 | fn factorial_loop(n: i32) -> i32 {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_text` is never used
[INFO] [stdout]    --> src/main.rs:475:4
[INFO] [stdout]     |
[INFO] [stdout] 475 | fn print_text(value: String, times: i32) {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `factorial_recursive` is never used
[INFO] [stdout]    --> src/main.rs:490:4
[INFO] [stdout]     |
[INFO] [stdout] 490 | fn factorial_recursive(n: u32) -> u32 {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_number` is never used
[INFO] [stdout]    --> src/main.rs:504:4
[INFO] [stdout]     |
[INFO] [stdout] 504 | fn print_number(number: i32) {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `hi` is never used
[INFO] [stdout]    --> src/main.rs:508:4
[INFO] [stdout]     |
[INFO] [stdout] 508 | fn hi(name: String) {
[INFO] [stdout]     |    ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `full_name` is never used
[INFO] [stdout]    --> src/main.rs:523:4
[INFO] [stdout]     |
[INFO] [stdout] 523 | fn full_name(first_name: &String, last_name: &String) -> String {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `change_value` is never used
[INFO] [stdout]    --> src/main.rs:538:4
[INFO] [stdout]     |
[INFO] [stdout] 538 | fn change_value(value: &mut String) {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_full_name` is never used
[INFO] [stdout]    --> src/main.rs:551:4
[INFO] [stdout]     |
[INFO] [stdout] 551 | fn get_full_name(first_name: &String, last_name: &String) -> String {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Person` is never constructed
[INFO] [stdout]    --> src/main.rs:591:8
[INFO] [stdout]     |
[INFO] [stdout] 591 | struct Person {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `say_hello` is never used
[INFO] [stdout]    --> src/main.rs:599:8
[INFO] [stdout]     |
[INFO] [stdout] 598 | impl Person {
[INFO] [stdout]     | ----------- method in this implementation
[INFO] [stdout] 599 |     fn say_hello(&self, name: &str) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_person` is never used
[INFO] [stdout]    --> src/main.rs:604:4
[INFO] [stdout]     |
[INFO] [stdout] 604 | fn print_person(person: &Person) {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `GeoPoint` is never constructed
[INFO] [stdout]    --> src/main.rs:632:8
[INFO] [stdout]     |
[INFO] [stdout] 632 | struct GeoPoint(f64, f64);
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/main.rs:635:8
[INFO] [stdout]     |
[INFO] [stdout] 634 | impl GeoPoint {
[INFO] [stdout]     | ------------- associated function in this implementation
[INFO] [stdout] 635 |     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:647:8
[INFO] [stdout]     |
[INFO] [stdout] 647 | struct Nothing;
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Level` is never used
[INFO] [stdout]    --> src/main.rs:674:6
[INFO] [stdout]     |
[INFO] [stdout] 674 | enum Level {
[INFO] [stdout]     |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Payment` is never used
[INFO] [stdout]    --> src/main.rs:696:6
[INFO] [stdout]     |
[INFO] [stdout] 696 | enum Payment {
[INFO] [stdout]     |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `pay` is never used
[INFO] [stdout]    --> src/main.rs:706:8
[INFO] [stdout]     |
[INFO] [stdout] 705 | impl Payment {
[INFO] [stdout]     | ------------ method in this implementation
[INFO] [stdout] 706 |     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:849:6
[INFO] [stdout]     |
[INFO] [stdout] 849 | type Age = u8;
[INFO] [stdout]     |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `IdentityNumber` is never used
[INFO] [stdout]    --> src/main.rs:850:6
[INFO] [stdout]     |
[INFO] [stdout] 850 | type IdentityNumber = String;
[INFO] [stdout]     |      ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Customer` is never constructed
[INFO] [stdout]    --> src/main.rs:852:8
[INFO] [stdout]     |
[INFO] [stdout] 852 | struct Customer {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `CanSayHello` is never used
[INFO] [stdout]    --> src/main.rs:869:7
[INFO] [stdout]     |
[INFO] [stdout] 869 | trait CanSayHello {
[INFO] [stdout]     |       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `CanSayGoodBye` is never used
[INFO] [stdout]    --> src/main.rs:877:7
[INFO] [stdout]     |
[INFO] [stdout] 877 | trait CanSayGoodBye {
[INFO] [stdout]     |       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `say_hello_trait` is never used
[INFO] [stdout]    --> src/main.rs:902:4
[INFO] [stdout]     |
[INFO] [stdout] 902 | fn say_hello_trait(value: &impl CanSayHello) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `hello_and_good_bye` is never used
[INFO] [stdout]    --> src/main.rs:906:4
[INFO] [stdout]     |
[INFO] [stdout] 906 | fn hello_and_good_bye(value: &(impl CanSayHello + CanSayGoodBye)) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SimplePerson` is never constructed
[INFO] [stdout]    --> src/main.rs:936:8
[INFO] [stdout]     |
[INFO] [stdout] 936 | struct SimplePerson {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_person` is never used
[INFO] [stdout]    --> src/main.rs:950:4
[INFO] [stdout]     |
[INFO] [stdout] 950 | 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 + CanSayHello {
[INFO] [stdout]     |       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]    --> src/main.rs:969:8
[INFO] [stdout]     |
[INFO] [stdout] 969 | struct Point<T = i32> {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `get_x` and `get_y` are never used
[INFO] [stdout]    --> src/main.rs:975:8
[INFO] [stdout]     |
[INFO] [stdout] 974 | impl<T> Point<T> {
[INFO] [stdout]     | ---------------- methods in this implementation
[INFO] [stdout] 975 |     fn get_x(&self) -> &T {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 979 |     fn get_y(&self) -> &T {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Value` is never used
[INFO] [stdout]    --> src/main.rs:999:6
[INFO] [stdout]     |
[INFO] [stdout] 999 | enum Value<T> {
[INFO] [stdout]     |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Hi` is never constructed
[INFO] [stdout]     --> src/main.rs:1018:8
[INFO] [stdout]      |
[INFO] [stdout] 1018 | struct Hi<T = SimplePerson> where T: CanSayGoodBye {
[INFO] [stdout]      |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `min` is never used
[INFO] [stdout]     --> src/main.rs:1033:4
[INFO] [stdout]      |
[INFO] [stdout] 1033 | fn min<T>(value1: T, value2: T) -> T where T: PartialOrd {
[INFO] [stdout]      |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `GetValue` is never used
[INFO] [stdout]     --> src/main.rs:1058:7
[INFO] [stdout]      |
[INFO] [stdout] 1058 | trait GetValue<T> where T: PartialOrd {
[INFO] [stdout]      |       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Apple` is never constructed
[INFO] [stdout]     --> src/main.rs:1072:8
[INFO] [stdout]      |
[INFO] [stdout] 1072 | struct Apple {
[INFO] [stdout]      |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `double` is never used
[INFO] [stdout]     --> src/main.rs:1098:4
[INFO] [stdout]      |
[INFO] [stdout] 1098 | 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:1152:8
[INFO] [stdout]      |
[INFO] [stdout] 1152 | struct Category {
[INFO] [stdout]      |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_with_filter` is never used
[INFO] [stdout]     --> src/main.rs:1188:4
[INFO] [stdout]      |
[INFO] [stdout] 1188 | 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:1200:4
[INFO] [stdout]      |
[INFO] [stdout] 1200 | 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:1225:8
[INFO] [stdout]      |
[INFO] [stdout] 1225 | struct Counter {
[INFO] [stdout]      |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `increment` is never used
[INFO] [stdout]     --> src/main.rs:1230:8
[INFO] [stdout]      |
[INFO] [stdout] 1229 | impl Counter {
[INFO] [stdout]      | ------------ method in this implementation
[INFO] [stdout] 1230 |     fn increment(&mut self) {
[INFO] [stdout]      |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `connect_database` is never used
[INFO] [stdout]     --> src/main.rs:1365:4
[INFO] [stdout]      |
[INFO] [stdout] 1365 | 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:1382:4
[INFO] [stdout]      |
[INFO] [stdout] 1382 | 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:1393:4
[INFO] [stdout]      |
[INFO] [stdout] 1393 | 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:1404:4
[INFO] [stdout]      |
[INFO] [stdout] 1404 | 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:1463:4
[INFO] [stdout]      |
[INFO] [stdout] 1463 | 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:1492:8
[INFO] [stdout]      |
[INFO] [stdout] 1492 | struct Student<'a, 'b> {
[INFO] [stdout]      |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `longest_name` is never used
[INFO] [stdout]     --> src/main.rs:1498:8
[INFO] [stdout]      |
[INFO] [stdout] 1497 | impl<'a, 'b> Student<'a, 'b> {
[INFO] [stdout]      | ---------------------------- method in this implementation
[INFO] [stdout] 1498 |     fn longest_name(&self, student: &Student<'a, 'b>) -> &'a str {
[INFO] [stdout]      |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `longest_student_name` is never used
[INFO] [stdout]     --> src/main.rs:1507:4
[INFO] [stdout]      |
[INFO] [stdout] 1507 | fn longest_student_name<'a, 'b>(student1: &Student<'a, 'b>, student2: &Student<'a, 'b>) -> &'a str {
[INFO] [stdout]      |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Teacher` is never constructed
[INFO] [stdout]     --> src/main.rs:1535:8
[INFO] [stdout]      |
[INFO] [stdout] 1535 | struct Teacher<'a, ID> where ID : Ord {
[INFO] [stdout]      |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Company` is never constructed
[INFO] [stdout]     --> src/main.rs:1550:8
[INFO] [stdout]      |
[INFO] [stdout] 1550 | struct Company {
[INFO] [stdout]      |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `display_number` is never used
[INFO] [stdout]     --> src/main.rs:1584:4
[INFO] [stdout]      |
[INFO] [stdout] 1584 | 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:1588:4
[INFO] [stdout]      |
[INFO] [stdout] 1588 | 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:1593:6
[INFO] [stdout]      |
[INFO] [stdout] 1593 | enum ProductCategory {
[INFO] [stdout]      |      ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MyValue` is never constructed
[INFO] [stdout]     --> src/main.rs:1620:8
[INFO] [stdout]      |
[INFO] [stdout] 1620 | struct MyValue<T> {
[INFO] [stdout]      |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `say_hello_reference` is never used
[INFO] [stdout]     --> src/main.rs:1641:4
[INFO] [stdout]      |
[INFO] [stdout] 1641 | 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:1654:8
[INFO] [stdout]      |
[INFO] [stdout] 1654 | struct Book {
[INFO] [stdout]      |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Brand` is never used
[INFO] [stdout]     --> src/main.rs:1672:6
[INFO] [stdout]      |
[INFO] [stdout] 1672 | enum Brand {
[INFO] [stdout]      |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Seller` is never constructed
[INFO] [stdout]     --> src/main.rs:1701:8
[INFO] [stdout]      |
[INFO] [stdout] 1701 | struct Seller {
[INFO] [stdout]      |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `APPLICATION` is never used
[INFO] [stdout]     --> src/main.rs:1721:8
[INFO] [stdout]      |
[INFO] [stdout] 1721 | static APPLICATION: &str = "My Application";
[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:11:16
[INFO] [stdout]    |
[INFO] [stdout] 11 |         pub fn say_hello() {
[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] 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:10:12
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl User {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] 10 |     pub fn say_hello(&self, name: &str) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]     --> src/main.rs:1456:13
[INFO] [stdout]      |
[INFO] [stdout] 1456 |         let x = 5;
[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:1686:9
[INFO] [stdout]      |
[INFO] [stdout] 1686 |     let laptop = 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:1690:13
[INFO] [stdout]      |
[INFO] [stdout] 1690 |         let smartphone = 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: variants `Regular` and `Platinum` are never constructed
[INFO] [stdout]    --> src/main.rs:675:5
[INFO] [stdout]     |
[INFO] [stdout] 674 | enum Level {
[INFO] [stdout]     |      ----- variants in this enum
[INFO] [stdout] 675 |     Regular,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout] 676 |     Premium,
[INFO] [stdout] 677 |     Platinum,
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[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 + CanSayHello {
[INFO] [stdout]     |       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `NONE` is never constructed
[INFO] [stdout]     --> src/main.rs:1000:5
[INFO] [stdout]      |
[INFO] [stdout]  999 | enum Value<T> {
[INFO] [stdout]      |      ----- variant in this enum
[INFO] [stdout] 1000 |     NONE,
[INFO] [stdout]      |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `last_name` is never read
[INFO] [stdout]     --> src/main.rs:1494:5
[INFO] [stdout]      |
[INFO] [stdout] 1492 | struct Student<'a, 'b> {
[INFO] [stdout]      |        ------- field in this struct
[INFO] [stdout] 1493 |     name: &'a str,
[INFO] [stdout] 1494 |     last_name: &'b str
[INFO] [stdout]      |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `id` is never read
[INFO] [stdout]     --> src/main.rs:1536:5
[INFO] [stdout]      |
[INFO] [stdout] 1535 | struct Teacher<'a, ID> where ID : Ord {
[INFO] [stdout]      |        ------- field in this struct
[INFO] [stdout] 1536 |     id: ID,
[INFO] [stdout]      |     ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]     --> src/main.rs:1594:8
[INFO] [stdout]      |
[INFO] [stdout] 1594 |     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] 1594 -     Of(String, Box<ProductCategory>),
[INFO] [stdout] 1594 +     Of((), ()),
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]     --> src/main.rs:1673:8
[INFO] [stdout]      |
[INFO] [stdout] 1673 |     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] 1673 -     Of(String, Rc<Brand>),
[INFO] [stdout] 1673 +     Of((), ()),
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `active` is never read
[INFO] [stdout]     --> src/main.rs:1703:5
[INFO] [stdout]      |
[INFO] [stdout] 1701 | struct Seller {
[INFO] [stdout]      |        ------ field in this struct
[INFO] [stdout] 1702 |     name: RefCell<String>,
[INFO] [stdout] 1703 |     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: fields `last_name`, `username`, `email`, and `age` are never read
[INFO] [stdout]  --> src/model.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct User {
[INFO] [stdout]   |            ---- fields in this struct
[INFO] [stdout] 2 |     pub first_name: String,
[INFO] [stdout] 3 |     pub last_name: String,
[INFO] [stdout]   |         ^^^^^^^^^
[INFO] [stdout] 4 |     pub username: String,
[INFO] [stdout]   |         ^^^^^^^^
[INFO] [stdout] 5 |     pub email: String,
[INFO] [stdout]   |         ^^^^^
[INFO] [stdout] 6 |     pub age: u8,
[INFO] [stdout]   |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.26s
[INFO] running `Command { std: "docker" "inspect" "ab3741b8f99f2d84ea7de5da64ddd1cb9e0f6eeb34691ed105bf70590856e534", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab3741b8f99f2d84ea7de5da64ddd1cb9e0f6eeb34691ed105bf70590856e534", kill_on_drop: false }`
[INFO] [stdout] ab3741b8f99f2d84ea7de5da64ddd1cb9e0f6eeb34691ed105bf70590856e534