[INFO] cloning repository https://github.com/clip968/system_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/clip968/system_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fclip968%2Fsystem_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fclip968%2Fsystem_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 51dfb35d990f1f961474eea678134347f2e4aeb9
[INFO] checking clip968/system_rust/51dfb35d990f1f961474eea678134347f2e4aeb9 against master#1f81f906893d166d05fb4839f169983f2b564cc7 for pr-135167
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fclip968%2Fsystem_rust" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
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[INFO] validating manifest of git repo https://github.com/clip968/system_rust on toolchain 1f81f906893d166d05fb4839f169983f2b564cc7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f81f906893d166d05fb4839f169983f2b564cc7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/clip968/system_rust
[INFO] finished tweaking git repo https://github.com/clip968/system_rust
[INFO] tweaked toml for git repo https://github.com/clip968/system_rust written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/clip968/system_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f81f906893d166d05fb4839f169983f2b564cc7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]     Updating crates.io index
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+1f81f906893d166d05fb4839f169983f2b564cc7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6fac2fa402c29fcb62597345eabeaa9d773a9021116647c2106892f577a88ac4
[INFO] running `Command { std: "docker" "start" "-a" "6fac2fa402c29fcb62597345eabeaa9d773a9021116647c2106892f577a88ac4", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "rm" "-f" "6fac2fa402c29fcb62597345eabeaa9d773a9021116647c2106892f577a88ac4", kill_on_drop: false }`
[INFO] [stdout] 6fac2fa402c29fcb62597345eabeaa9d773a9021116647c2106892f577a88ac4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+1f81f906893d166d05fb4839f169983f2b564cc7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 222749a2809f1ac352c83ae82235430b04e43f198dc179e9fedee48890033bbb
[INFO] running `Command { std: "docker" "start" "-a" "222749a2809f1ac352c83ae82235430b04e43f198dc179e9fedee48890033bbb", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
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[INFO] [stderr]     Checking adder v0.1.0 (/opt/rustwide/workdir/adder)
[INFO] [stderr]     Checking learn_mutex v0.1.0 (/opt/rustwide/workdir/learn_mutex)
[INFO] [stderr]     Checking calc v0.1.0 (/opt/rustwide/workdir/calc)
[INFO] [stdout] warning: unused imports: `BufRead`, `BufReader`, and `fs::File`
[INFO] [stdout]  --> learn_mutex/src/main.rs:2:11
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::{fs::File, io::{BufRead, BufReader}};
[INFO] [stdout]   |           ^^^^^^^^       ^^^^^^^  ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::sync::Semaphore`
[INFO] [stdout]  --> learn_mutex/src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use tokio::sync::Semaphore;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Deserialize` and `Serialize`
[INFO] [stdout]  --> learn_mutex/src/main.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 | use serde::{Serialize, Deserialize};
[INFO] [stdout]   |             ^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BufRead`, `BufReader`, and `fs::File`
[INFO] [stdout]  --> learn_mutex/src/main.rs:2:11
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::{fs::File, io::{BufRead, BufReader}};
[INFO] [stdout]   |           ^^^^^^^^       ^^^^^^^  ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::sync::Semaphore`
[INFO] [stdout]  --> learn_mutex/src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use tokio::sync::Semaphore;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Deserialize` and `Serialize`
[INFO] [stdout]  --> learn_mutex/src/main.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 | use serde::{Serialize, Deserialize};
[INFO] [stdout]   |             ^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking object_oriented_programming v0.1.0 (/opt/rustwide/workdir/object_oriented_programming)
[INFO] [stdout] warning: trait `Control_1` should have an upper camel case name
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:301:7
[INFO] [stdout]     |
[INFO] [stdout] 301 | trait Control_1 {
[INFO] [stdout]     |       ^^^^^^^^^ help: convert the identifier to upper camel case: `Control1`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Button_1` should have an upper camel case name
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:305:8
[INFO] [stdout]     |
[INFO] [stdout] 305 | struct Button_1 {
[INFO] [stdout]     |        ^^^^^^^^ help: convert the identifier to upper camel case: `Button1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Control_1` should have an upper camel case name
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:301:7
[INFO] [stdout]     |
[INFO] [stdout] 301 | trait Control_1 {
[INFO] [stdout]     |       ^^^^^^^^^ help: convert the identifier to upper camel case: `Control1`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Button_1` should have an upper camel case name
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:305:8
[INFO] [stdout]     |
[INFO] [stdout] 305 | struct Button_1 {
[INFO] [stdout]     |        ^^^^^^^^ help: convert the identifier to upper camel case: `Button1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:502:21
[INFO] [stdout]     |
[INFO] [stdout] 502 |         if let Some(s) = self.state.take() {
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_s`
[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]   --> object_oriented_programming/src/main.rs:24:7
[INFO] [stdout]    |
[INFO] [stdout] 24 | trait Hello {
[INFO] [stdout]    |       ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `say_hello` is never used
[INFO] [stdout]   --> object_oriented_programming/src/main.rs:28:4
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn say_hello(say: &dyn Hello) {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Student` is never constructed
[INFO] [stdout]   --> object_oriented_programming/src/main.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | struct Student{}
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Teacher` is never constructed
[INFO] [stdout]   --> object_oriented_programming/src/main.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 | struct Teacher {}
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Pointable` is never used
[INFO] [stdout]   --> object_oriented_programming/src/main.rs:48:7
[INFO] [stdout]    |
[INFO] [stdout] 48 | trait Pointable {
[INFO] [stdout]    |       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]   --> object_oriented_programming/src/main.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 53 | struct Point {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_pointable` is never used
[INFO] [stdout]   --> object_oriented_programming/src/main.rs:67:4
[INFO] [stdout]    |
[INFO] [stdout] 67 | fn print_pointable(pointable : &dyn Pointable) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ColorPoint` is never constructed
[INFO] [stdout]   --> object_oriented_programming/src/main.rs:71:8
[INFO] [stdout]    |
[INFO] [stdout] 71 | struct ColorPoint {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `color` are never used
[INFO] [stdout]   --> object_oriented_programming/src/main.rs:77:8
[INFO] [stdout]    |
[INFO] [stdout] 76 | impl ColorPoint {
[INFO] [stdout]    | --------------- associated items in this implementation
[INFO] [stdout] 77 |     fn new(color: String, x:i32, y:i32) -> ColorPoint {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 84 |     fn color(&self) -> &String {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Pizza` is never used
[INFO] [stdout]   --> object_oriented_programming/src/main.rs:99:7
[INFO] [stdout]    |
[INFO] [stdout] 99 | trait Pizza {
[INFO] [stdout]    |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `PizzaType` is never used
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:103:6
[INFO] [stdout]     |
[INFO] [stdout] 103 | enum PizzaType {
[INFO] [stdout]     |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `PizzaFactory` is never used
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:108:7
[INFO] [stdout]     |
[INFO] [stdout] 108 | trait PizzaFactory {
[INFO] [stdout]     |       ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ConcretePizzaFactory` is never constructed
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:112:8
[INFO] [stdout]     |
[INFO] [stdout] 112 | struct ConcretePizzaFactory {}
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BulgogiPizza` is never constructed
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:113:8
[INFO] [stdout]     |
[INFO] [stdout] 113 | struct BulgogiPizza {}
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Hawaiianpizza` is never constructed
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:114:8
[INFO] [stdout]     |
[INFO] [stdout] 114 | struct Hawaiianpizza {}
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:149:5
[INFO] [stdout]     |
[INFO] [stdout] 148 | struct MySingleton {
[INFO] [stdout]     |        ----------- field in this struct
[INFO] [stdout] 149 |     name:String,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `call` is never used
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:157:8
[INFO] [stdout]     |
[INFO] [stdout] 152 | impl MySingleton {
[INFO] [stdout]     | ---------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 157 |     fn call(&self) {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Burger` is never constructed
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:162:8
[INFO] [stdout]     |
[INFO] [stdout] 162 | struct Burger {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `to_string` is never used
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:170:8
[INFO] [stdout]     |
[INFO] [stdout] 169 | impl Burger {
[INFO] [stdout]     | ----------- method in this implementation
[INFO] [stdout] 170 |     fn to_string(&self) -> String {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BurgerBuilder` is never constructed
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:181:8
[INFO] [stdout]     |
[INFO] [stdout] 181 | struct BurgerBuilder {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `bun`, `patties`, `sauce`, `add_extra`, and `build` are never used
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:189:8
[INFO] [stdout]     |
[INFO] [stdout] 188 | impl BurgerBuilder {
[INFO] [stdout]     | ------------------ associated items in this implementation
[INFO] [stdout] 189 |     fn new() -> BurgerBuilder {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 194 |     fn bun(mut self, bun: String) -> BurgerBuilder {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 199 |     fn patties(mut self, patties:i32) -> BurgerBuilder {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 204 |     fn sauce(mut self, sauce:String) -> BurgerBuilder {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 209 |     fn add_extra(mut self, val: String) -> BurgerBuilder {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 214 |     fn build(self) -> Burger {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Adaptee` is never constructed
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:221:8
[INFO] [stdout]     |
[INFO] [stdout] 221 | struct Adaptee {}
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `vendor_specific_api` are never used
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:224:8
[INFO] [stdout]     |
[INFO] [stdout] 223 | impl Adaptee {
[INFO] [stdout]     | ------------ associated items in this implementation
[INFO] [stdout] 224 |     fn new() -> Adaptee {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 228 |     fn vendor_specific_api(&self) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Adapter` is never constructed
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:236:8
[INFO] [stdout]     |
[INFO] [stdout] 236 | struct Adapter {}
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `call_api` are never used
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:239:8
[INFO] [stdout]     |
[INFO] [stdout] 238 | impl Adapter {
[INFO] [stdout]     | ------------ associated items in this implementation
[INFO] [stdout] 239 |     fn new() -> Adapter {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 246 |     fn call_api(&self) {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Control` is never used
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:252:7
[INFO] [stdout]     |
[INFO] [stdout] 252 | trait Control {
[INFO] [stdout]     |       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Button` is never constructed
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:256:8
[INFO] [stdout]     |
[INFO] [stdout] 256 | struct Button {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:267:8
[INFO] [stdout]     |
[INFO] [stdout] 266 | impl Button {
[INFO] [stdout]     | ----------- associated function in this implementation
[INFO] [stdout] 267 |     fn new(name:String) -> Box<Button> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Panel` is never constructed
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:274:8
[INFO] [stdout]     |
[INFO] [stdout] 274 | struct Panel {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `add_control` are never used
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:290:8
[INFO] [stdout]     |
[INFO] [stdout] 289 | impl Panel {
[INFO] [stdout]     | ---------- associated items in this implementation
[INFO] [stdout] 290 |     fn new(name: String) -> Box<Panel> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 294 |     fn add_control(&mut self, control: Box<dyn Control>) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Control_1` is never used
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:301:7
[INFO] [stdout]     |
[INFO] [stdout] 301 | trait Control_1 {
[INFO] [stdout]     |       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Button_1` is never constructed
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:305:8
[INFO] [stdout]     |
[INFO] [stdout] 305 | struct Button_1 {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `add_decorator` are never used
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:323:8
[INFO] [stdout]     |
[INFO] [stdout] 322 | impl Button_1 {
[INFO] [stdout]     | ------------- associated items in this implementation
[INFO] [stdout] 323 |     fn new(name:String) -> Button_1 {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 330 |     fn add_decorator(&mut self, decorator: Box<dyn Control_1>) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:502:21
[INFO] [stdout]     |
[INFO] [stdout] 502 |         if let Some(s) = self.state.take() {
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Deco` is never constructed
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:335:8
[INFO] [stdout]     |
[INFO] [stdout] 335 | struct Deco {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:346:8
[INFO] [stdout]     |
[INFO] [stdout] 345 | impl Deco {
[INFO] [stdout]     | --------- associated function in this implementation
[INFO] [stdout] 346 |     fn new(name: String) -> Box<Deco> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Flyweight` is never used
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:354:7
[INFO] [stdout]     |
[INFO] [stdout] 354 | trait Flyweight {
[INFO] [stdout]     |       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ConcreteFlyweight` is never constructed
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:358:8
[INFO] [stdout]     |
[INFO] [stdout] 358 | struct ConcreteFlyweight {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FlyweightFactory` is never constructed
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:368:8
[INFO] [stdout]     |
[INFO] [stdout] 368 | struct FlyweightFactory {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `get_flyweight` are never used
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:373:8
[INFO] [stdout]     |
[INFO] [stdout] 372 | impl FlyweightFactory {
[INFO] [stdout]     | --------------------- associated items in this implementation
[INFO] [stdout] 373 |     fn new() -> FlyweightFactory {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 379 |     fn get_flyweight(&mut self, name:String) -> Rc<Box<dyn Flyweight>> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Listener` is never constructed
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:396:8
[INFO] [stdout]     |
[INFO] [stdout] 396 | struct Listener {}
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `on_event` is never used
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:399:8
[INFO] [stdout]     |
[INFO] [stdout] 398 | impl Listener {
[INFO] [stdout]     | ------------- method in this implementation
[INFO] [stdout] 399 |     fn on_event(&self, data: &str) {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Subject` is never constructed
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:404:8
[INFO] [stdout]     |
[INFO] [stdout] 404 | struct Subject {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `subscribe`, `unsubscribe`, and `notify` are never used
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:409:8
[INFO] [stdout]     |
[INFO] [stdout] 408 | impl Subject {
[INFO] [stdout]     | ------------ methods in this implementation
[INFO] [stdout] 409 |     fn subscribe(&mut self, observer: Rc<Listener>) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 413 |     fn unsubscribe(&mut self, observer: Rc<Listener>) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 419 |     fn notify(&self, data: &str) {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Render` is never used
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:428:7
[INFO] [stdout]     |
[INFO] [stdout] 428 | trait Render {
[INFO] [stdout]     |       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `HtmlRenderer` is never constructed
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:432:8
[INFO] [stdout]     |
[INFO] [stdout] 432 | struct HtmlRenderer {}
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MarkdownRenderer` is never constructed
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:440:8
[INFO] [stdout]     |
[INFO] [stdout] 440 | struct MarkdownRenderer;
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Page` is never constructed
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:448:8
[INFO] [stdout]     |
[INFO] [stdout] 448 | struct Page<T: Render> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `render` are never used
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:453:8
[INFO] [stdout]     |
[INFO] [stdout] 452 | impl<T:Render> Page<T> {
[INFO] [stdout]     | ---------------------- associated items in this implementation
[INFO] [stdout] 453 |     fn new(renderer: T) -> Page<T> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 457 |     fn render(&self, title: String, body: String) {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Hello` is never used
[INFO] [stdout]   --> object_oriented_programming/src/main.rs:24:7
[INFO] [stdout]    |
[INFO] [stdout] 24 | trait Hello {
[INFO] [stdout]    |       ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `say_hello` is never used
[INFO] [stdout]   --> object_oriented_programming/src/main.rs:28:4
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn say_hello(say: &dyn Hello) {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Student` is never constructed
[INFO] [stdout]   --> object_oriented_programming/src/main.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | struct Student{}
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Teacher` is never constructed
[INFO] [stdout]   --> object_oriented_programming/src/main.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 | struct Teacher {}
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Pointable` is never used
[INFO] [stdout]   --> object_oriented_programming/src/main.rs:48:7
[INFO] [stdout]    |
[INFO] [stdout] 48 | trait Pointable {
[INFO] [stdout]    |       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]   --> object_oriented_programming/src/main.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 53 | struct Point {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_pointable` is never used
[INFO] [stdout]   --> object_oriented_programming/src/main.rs:67:4
[INFO] [stdout]    |
[INFO] [stdout] 67 | fn print_pointable(pointable : &dyn Pointable) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ColorPoint` is never constructed
[INFO] [stdout]   --> object_oriented_programming/src/main.rs:71:8
[INFO] [stdout]    |
[INFO] [stdout] 71 | struct ColorPoint {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `color` are never used
[INFO] [stdout]   --> object_oriented_programming/src/main.rs:77:8
[INFO] [stdout]    |
[INFO] [stdout] 76 | impl ColorPoint {
[INFO] [stdout]    | --------------- associated items in this implementation
[INFO] [stdout] 77 |     fn new(color: String, x:i32, y:i32) -> ColorPoint {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 84 |     fn color(&self) -> &String {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Pizza` is never used
[INFO] [stdout]   --> object_oriented_programming/src/main.rs:99:7
[INFO] [stdout]    |
[INFO] [stdout] 99 | trait Pizza {
[INFO] [stdout]    |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `PizzaType` is never used
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:103:6
[INFO] [stdout]     |
[INFO] [stdout] 103 | enum PizzaType {
[INFO] [stdout]     |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `PizzaFactory` is never used
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:108:7
[INFO] [stdout]     |
[INFO] [stdout] 108 | trait PizzaFactory {
[INFO] [stdout]     |       ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ConcretePizzaFactory` is never constructed
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:112:8
[INFO] [stdout]     |
[INFO] [stdout] 112 | struct ConcretePizzaFactory {}
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BulgogiPizza` is never constructed
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:113:8
[INFO] [stdout]     |
[INFO] [stdout] 113 | struct BulgogiPizza {}
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Hawaiianpizza` is never constructed
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:114:8
[INFO] [stdout]     |
[INFO] [stdout] 114 | struct Hawaiianpizza {}
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:149:5
[INFO] [stdout]     |
[INFO] [stdout] 148 | struct MySingleton {
[INFO] [stdout]     |        ----------- field in this struct
[INFO] [stdout] 149 |     name:String,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `call` is never used
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:157:8
[INFO] [stdout]     |
[INFO] [stdout] 152 | impl MySingleton {
[INFO] [stdout]     | ---------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 157 |     fn call(&self) {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Burger` is never constructed
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:162:8
[INFO] [stdout]     |
[INFO] [stdout] 162 | struct Burger {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `to_string` is never used
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:170:8
[INFO] [stdout]     |
[INFO] [stdout] 169 | impl Burger {
[INFO] [stdout]     | ----------- method in this implementation
[INFO] [stdout] 170 |     fn to_string(&self) -> String {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BurgerBuilder` is never constructed
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:181:8
[INFO] [stdout]     |
[INFO] [stdout] 181 | struct BurgerBuilder {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `bun`, `patties`, `sauce`, `add_extra`, and `build` are never used
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:189:8
[INFO] [stdout]     |
[INFO] [stdout] 188 | impl BurgerBuilder {
[INFO] [stdout]     | ------------------ associated items in this implementation
[INFO] [stdout] 189 |     fn new() -> BurgerBuilder {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 194 |     fn bun(mut self, bun: String) -> BurgerBuilder {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 199 |     fn patties(mut self, patties:i32) -> BurgerBuilder {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 204 |     fn sauce(mut self, sauce:String) -> BurgerBuilder {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 209 |     fn add_extra(mut self, val: String) -> BurgerBuilder {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 214 |     fn build(self) -> Burger {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Adaptee` is never constructed
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:221:8
[INFO] [stdout]     |
[INFO] [stdout] 221 | struct Adaptee {}
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `vendor_specific_api` are never used
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:224:8
[INFO] [stdout]     |
[INFO] [stdout] 223 | impl Adaptee {
[INFO] [stdout]     | ------------ associated items in this implementation
[INFO] [stdout] 224 |     fn new() -> Adaptee {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 228 |     fn vendor_specific_api(&self) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Adapter` is never constructed
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:236:8
[INFO] [stdout]     |
[INFO] [stdout] 236 | struct Adapter {}
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `call_api` are never used
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:239:8
[INFO] [stdout]     |
[INFO] [stdout] 238 | impl Adapter {
[INFO] [stdout]     | ------------ associated items in this implementation
[INFO] [stdout] 239 |     fn new() -> Adapter {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 246 |     fn call_api(&self) {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Control` is never used
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:252:7
[INFO] [stdout]     |
[INFO] [stdout] 252 | trait Control {
[INFO] [stdout]     |       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Button` is never constructed
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:256:8
[INFO] [stdout]     |
[INFO] [stdout] 256 | struct Button {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:267:8
[INFO] [stdout]     |
[INFO] [stdout] 266 | impl Button {
[INFO] [stdout]     | ----------- associated function in this implementation
[INFO] [stdout] 267 |     fn new(name:String) -> Box<Button> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Panel` is never constructed
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:274:8
[INFO] [stdout]     |
[INFO] [stdout] 274 | struct Panel {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `add_control` are never used
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:290:8
[INFO] [stdout]     |
[INFO] [stdout] 289 | impl Panel {
[INFO] [stdout]     | ---------- associated items in this implementation
[INFO] [stdout] 290 |     fn new(name: String) -> Box<Panel> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 294 |     fn add_control(&mut self, control: Box<dyn Control>) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Control_1` is never used
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:301:7
[INFO] [stdout]     |
[INFO] [stdout] 301 | trait Control_1 {
[INFO] [stdout]     |       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Button_1` is never constructed
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:305:8
[INFO] [stdout]     |
[INFO] [stdout] 305 | struct Button_1 {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `add_decorator` are never used
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:323:8
[INFO] [stdout]     |
[INFO] [stdout] 322 | impl Button_1 {
[INFO] [stdout]     | ------------- associated items in this implementation
[INFO] [stdout] 323 |     fn new(name:String) -> Button_1 {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 330 |     fn add_decorator(&mut self, decorator: Box<dyn Control_1>) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Deco` is never constructed
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:335:8
[INFO] [stdout]     |
[INFO] [stdout] 335 | struct Deco {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:346:8
[INFO] [stdout]     |
[INFO] [stdout] 345 | impl Deco {
[INFO] [stdout]     | --------- associated function in this implementation
[INFO] [stdout] 346 |     fn new(name: String) -> Box<Deco> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Flyweight` is never used
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:354:7
[INFO] [stdout]     |
[INFO] [stdout] 354 | trait Flyweight {
[INFO] [stdout]     |       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ConcreteFlyweight` is never constructed
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:358:8
[INFO] [stdout]     |
[INFO] [stdout] 358 | struct ConcreteFlyweight {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FlyweightFactory` is never constructed
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:368:8
[INFO] [stdout]     |
[INFO] [stdout] 368 | struct FlyweightFactory {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `get_flyweight` are never used
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:373:8
[INFO] [stdout]     |
[INFO] [stdout] 372 | impl FlyweightFactory {
[INFO] [stdout]     | --------------------- associated items in this implementation
[INFO] [stdout] 373 |     fn new() -> FlyweightFactory {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 379 |     fn get_flyweight(&mut self, name:String) -> Rc<Box<dyn Flyweight>> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Listener` is never constructed
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:396:8
[INFO] [stdout]     |
[INFO] [stdout] 396 | struct Listener {}
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `on_event` is never used
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:399:8
[INFO] [stdout]     |
[INFO] [stdout] 398 | impl Listener {
[INFO] [stdout]     | ------------- method in this implementation
[INFO] [stdout] 399 |     fn on_event(&self, data: &str) {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Subject` is never constructed
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:404:8
[INFO] [stdout]     |
[INFO] [stdout] 404 | struct Subject {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `subscribe`, `unsubscribe`, and `notify` are never used
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:409:8
[INFO] [stdout]     |
[INFO] [stdout] 408 | impl Subject {
[INFO] [stdout]     | ------------ methods in this implementation
[INFO] [stdout] 409 |     fn subscribe(&mut self, observer: Rc<Listener>) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 413 |     fn unsubscribe(&mut self, observer: Rc<Listener>) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 419 |     fn notify(&self, data: &str) {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Render` is never used
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:428:7
[INFO] [stdout]     |
[INFO] [stdout] 428 | trait Render {
[INFO] [stdout]     |       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `HtmlRenderer` is never constructed
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:432:8
[INFO] [stdout]     |
[INFO] [stdout] 432 | struct HtmlRenderer {}
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MarkdownRenderer` is never constructed
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:440:8
[INFO] [stdout]     |
[INFO] [stdout] 440 | struct MarkdownRenderer;
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Page` is never constructed
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:448:8
[INFO] [stdout]     |
[INFO] [stdout] 448 | struct Page<T: Render> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `render` are never used
[INFO] [stdout]    --> object_oriented_programming/src/main.rs:453:8
[INFO] [stdout]     |
[INFO] [stdout] 452 | impl<T:Render> Page<T> {
[INFO] [stdout]     | ---------------------- associated items in this implementation
[INFO] [stdout] 453 |     fn new(renderer: T) -> Page<T> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 457 |     fn render(&self, title: String, body: String) {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking learn_mmap v0.1.0 (/opt/rustwide/workdir/learn_mmap)
[INFO] [stdout] warning: unused import: `MmapMut`
[INFO] [stdout]  --> learn_mmap/src/main.rs:1:14
[INFO] [stdout]   |
[INFO] [stdout] 1 | use memmap::{MmapMut, MmapOptions};
[INFO] [stdout]   |              ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]  --> learn_mmap/src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::env;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]  --> learn_mmap/src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::time::Duration;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]  --> learn_mmap/src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::thread;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `FILE_PATH` is never used
[INFO] [stdout]   --> learn_mmap/src/main.rs:10:7
[INFO] [stdout]    |
[INFO] [stdout] 10 | const FILE_PATH: &str = "shared_mmap_file.txt";
[INFO] [stdout]    |       ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `write_to_mmap` is never used
[INFO] [stdout]   --> learn_mmap/src/main.rs:71:4
[INFO] [stdout]    |
[INFO] [stdout] 71 | fn write_to_mmap() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_from_mmap` is never used
[INFO] [stdout]   --> learn_mmap/src/main.rs:94:4
[INFO] [stdout]    |
[INFO] [stdout] 94 | fn read_from_mmap() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `MmapMut`
[INFO] [stdout]  --> learn_mmap/src/main.rs:1:14
[INFO] [stdout]   |
[INFO] [stdout] 1 | use memmap::{MmapMut, MmapOptions};
[INFO] [stdout]   |              ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]  --> learn_mmap/src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::env;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]  --> learn_mmap/src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::time::Duration;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]  --> learn_mmap/src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::thread;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking signal_handler v0.1.0 (/opt/rustwide/workdir/signal_handler)
[INFO] [stdout] warning: constant `FILE_PATH` is never used
[INFO] [stdout]   --> learn_mmap/src/main.rs:10:7
[INFO] [stdout]    |
[INFO] [stdout] 10 | const FILE_PATH: &str = "shared_mmap_file.txt";
[INFO] [stdout]    |       ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `write_to_mmap` is never used
[INFO] [stdout]   --> learn_mmap/src/main.rs:71:4
[INFO] [stdout]    |
[INFO] [stdout] 71 | fn write_to_mmap() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_from_mmap` is never used
[INFO] [stdout]   --> learn_mmap/src/main.rs:94:4
[INFO] [stdout]    |
[INFO] [stdout] 94 | fn read_from_mmap() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sleep`
[INFO] [stdout]  --> signal_handler/src/main.rs:1:25
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::thread::{self, sleep};
[INFO] [stdout]   |                         ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `AtomicBool` and `Ordering`
[INFO] [stdout]  --> signal_handler/src/main.rs:4:25
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::sync::atomic::{AtomicBool, Ordering};
[INFO] [stdout]   |                         ^^^^^^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::Arc`
[INFO] [stdout]  --> signal_handler/src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::sync::Arc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sig`
[INFO] [stdout]   --> signal_handler/src/main.rs:34:13
[INFO] [stdout]    |
[INFO] [stdout] 34 |         for sig in signals.forever() {
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_sig`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sleep`
[INFO] [stdout]  --> signal_handler/src/main.rs:1:25
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::thread::{self, sleep};
[INFO] [stdout]   |                         ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `AtomicBool` and `Ordering`
[INFO] [stdout]  --> signal_handler/src/main.rs:4:25
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::sync::atomic::{AtomicBool, Ordering};
[INFO] [stdout]   |                         ^^^^^^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::Arc`
[INFO] [stdout]  --> signal_handler/src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::sync::Arc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking learn_thread v0.1.0 (/opt/rustwide/workdir/learn_thread)
[INFO] [stdout] warning: unused variable: `sig`
[INFO] [stdout]   --> signal_handler/src/main.rs:34:13
[INFO] [stdout]    |
[INFO] [stdout] 34 |         for sig in signals.forever() {
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_sig`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking dbus-client v0.1.0 (/opt/rustwide/workdir/dbus-client)
[INFO] [stdout] warning: unused imports: `BufReader`, `fs::File`, `sync::mpsc`, and `thread`
[INFO] [stdout]  --> learn_thread/src/main.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{fs::File, io::{BufRead, BufReader}, sync::mpsc, thread, time::Duration};
[INFO] [stdout]   |           ^^^^^^^^                ^^^^^^^^^   ^^^^^^^^^^  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures::executor::block_on`
[INFO] [stdout]  --> learn_thread/src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use futures::executor::block_on;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BufReader`, `fs::File`, `sync::mpsc`, and `thread`
[INFO] [stdout]  --> learn_thread/src/main.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{fs::File, io::{BufRead, BufReader}, sync::mpsc, thread, time::Duration};
[INFO] [stdout]   |           ^^^^^^^^                ^^^^^^^^^   ^^^^^^^^^^  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures::executor::block_on`
[INFO] [stdout]  --> learn_thread/src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use futures::executor::block_on;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> learn_thread/src/main.rs:129:9
[INFO] [stdout]     |
[INFO] [stdout] 129 |     for i in 1..10 {
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BufRead`
[INFO] [stdout]  --> learn_thread/src/main.rs:1:26
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{fs::File, io::{BufRead, BufReader}, sync::mpsc, thread, time::Duration};
[INFO] [stdout]   |                          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `calc_sum` is never used
[INFO] [stdout]    --> learn_thread/src/main.rs:108:10
[INFO] [stdout]     |
[INFO] [stdout] 108 | async fn calc_sum(start: i32, end: i32) -> i32 {
[INFO] [stdout]     |          ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `calc` is never used
[INFO] [stdout]    --> learn_thread/src/main.rs:119:10
[INFO] [stdout]     |
[INFO] [stdout] 119 | async fn calc() -> i32 {
[INFO] [stdout]     |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sleep_10sec` is never used
[INFO] [stdout]    --> learn_thread/src/main.rs:128:10
[INFO] [stdout]     |
[INFO] [stdout] 128 | async fn sleep_10sec(){
[INFO] [stdout]     |          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> learn_thread/src/main.rs:129:9
[INFO] [stdout]     |
[INFO] [stdout] 129 |     for i in 1..10 {
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BufRead`
[INFO] [stdout]  --> learn_thread/src/main.rs:1:26
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{fs::File, io::{BufRead, BufReader}, sync::mpsc, thread, time::Duration};
[INFO] [stdout]   |                          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `calc_sum` is never used
[INFO] [stdout]    --> learn_thread/src/main.rs:108:10
[INFO] [stdout]     |
[INFO] [stdout] 108 | async fn calc_sum(start: i32, end: i32) -> i32 {
[INFO] [stdout]     |          ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `calc` is never used
[INFO] [stdout]    --> learn_thread/src/main.rs:119:10
[INFO] [stdout]     |
[INFO] [stdout] 119 | async fn calc() -> i32 {
[INFO] [stdout]     |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sleep_10sec` is never used
[INFO] [stdout]    --> learn_thread/src/main.rs:128:10
[INFO] [stdout]     |
[INFO] [stdout] 128 | async fn sleep_10sec(){
[INFO] [stdout]     |          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking dbus-server v0.1.0 (/opt/rustwide/workdir/dbus-server)
[INFO] [stderr]     Checking sharedmem_writer v0.1.0 (/opt/rustwide/workdir/sharedmem_writer)
[INFO] [stderr]     Checking sharedmem_reader v0.1.0 (/opt/rustwide/workdir/sharedmem_reader)
[INFO] [stderr]     Checking chatclient v0.1.0 (/opt/rustwide/workdir/chatclient)
[INFO] [stderr]     Checking chatserver v0.1.0 (/opt/rustwide/workdir/chatserver)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> chatclient/src/main.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     io::stdout().flush();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let _ = io::stdout().flush();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> chatserver/src/main.rs:49:13
[INFO] [stdout]    |
[INFO] [stdout] 49 |             buf_reader.read_line(&mut username).await;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 49 |             let _ = buf_reader.read_line(&mut username).await;
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> chatserver/src/main.rs:61:17
[INFO] [stdout]    |
[INFO] [stdout] 61 |                 buf_reader.read_line(&mut message).await;
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 61 |                 let _ = buf_reader.read_line(&mut message).await;
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking learn_unsafe v0.1.0 (/opt/rustwide/workdir/learn_unsafe)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> chatserver/src/main.rs:49:13
[INFO] [stdout]    |
[INFO] [stdout] 49 |             buf_reader.read_line(&mut username).await;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 49 |             let _ = buf_reader.read_line(&mut username).await;
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> chatserver/src/main.rs:61:17
[INFO] [stdout]    |
[INFO] [stdout] 61 |                 buf_reader.read_line(&mut message).await;
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 61 |                 let _ = buf_reader.read_line(&mut message).await;
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]  --> learn_unsafe/src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::mem;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> chatclient/src/main.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     io::stdout().flush();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let _ = io::stdout().flush();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]  --> learn_unsafe/src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::mem;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking ownership v0.1.0 (/opt/rustwide/workdir/ownership)
[INFO] [stderr]     Checking double_linked_list v0.1.0 (/opt/rustwide/workdir/double_linked_list)
[INFO] [stderr]     Checking filedb v0.1.0 (/opt/rustwide/workdir/filedb)
[INFO] [stdout] warning: unused import: `crate::business::user::UserManager`
[INFO] [stdout]  --> filedb/src/database/file_db.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::business::user::UserManager;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `business::user::User`
[INFO] [stdout]  --> filedb/src/lib.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use business::user::User;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> filedb/src/business/user.rs:26:13
[INFO] [stdout]    |
[INFO] [stdout] 26 |         let mut user = User {
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> ownership/src/main.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::rc::{self, Rc, Weak};
[INFO] [stdout]   |               ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u`
[INFO] [stdout]   --> filedb/src/lib.rs:32:18
[INFO] [stdout]    |
[INFO] [stdout] 32 |             Some(u) => {
[INFO] [stdout]    |                  ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking learn_macro v0.1.0 (/opt/rustwide/workdir/learn_macro)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> filedb/src/business/user.rs:62:9
[INFO] [stdout]    |
[INFO] [stdout] 62 |         file_db::save(String::from("file.db"), self.get_all());
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 62 |         let _ = file_db::save(String::from("file.db"), self.get_all());
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> ownership/src/main.rs:181:9
[INFO] [stdout]     |
[INFO] [stdout] 181 |     let mut p1 = Rc::new(Person {
[INFO] [stdout]     |         ----^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> ownership/src/main.rs:186:9
[INFO] [stdout]     |
[INFO] [stdout] 186 |     let mut p2 = Rc::new(Person {
[INFO] [stdout]     |         ----^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking learn_system_call v0.1.0 (/opt/rustwide/workdir/learn_system_call)
[INFO] [stdout] warning: struct `Student` is never constructed
[INFO] [stdout]  --> ownership/src/main.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct Student {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `say_hello`
[INFO] [stdout]  --> learn_macro/src/main.rs:7:14
[INFO] [stdout]   |
[INFO] [stdout] 7 | macro_rules! say_hello {
[INFO] [stdout]   |              ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking data_type v0.1.0 (/opt/rustwide/workdir/data_type)
[INFO] [stdout] warning: unused macro definition: `add`
[INFO] [stdout]   --> learn_macro/src/main.rs:16:14
[INFO] [stdout]    |
[INFO] [stdout] 16 | macro_rules! add {
[INFO] [stdout]    |              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `multi_var`
[INFO] [stdout]   --> learn_macro/src/main.rs:54:14
[INFO] [stdout]    |
[INFO] [stdout] 54 | macro_rules! multi_var {
[INFO] [stdout]    |              ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `multiply`
[INFO] [stdout]   --> learn_macro/src/main.rs:62:14
[INFO] [stdout]    |
[INFO] [stdout] 62 | macro_rules! multiply {
[INFO] [stdout]    |              ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `compute`
[INFO] [stdout]   --> learn_macro/src/main.rs:68:14
[INFO] [stdout]    |
[INFO] [stdout] 68 | macro_rules! compute {
[INFO] [stdout]    |              ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking view v0.1.0 (/opt/rustwide/workdir/view)
[INFO] [stdout] warning: function `ident_func` is never used
[INFO] [stdout]   --> learn_macro/src/main.rs:30:18
[INFO] [stdout]    |
[INFO] [stdout] 30 | create_function!(ident_func);
[INFO] [stdout]    |                  ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `create_function` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Person` is never constructed
[INFO] [stdout]   --> learn_macro/src/main.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 44 | struct Person {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `name`, `set_name`, `age`, and `set_age` are never used
[INFO] [stdout]   --> learn_macro/src/main.rs:50:23
[INFO] [stdout]    |
[INFO] [stdout] 49 | impl Person {
[INFO] [stdout]    | ----------- methods in this implementation
[INFO] [stdout] 50 |     create_accessors!(name, String, set_name);
[INFO] [stdout]    |                       ^^^^          ^^^^^^^^
[INFO] [stdout] 51 |     create_accessors!(age, u32, set_age);
[INFO] [stdout]    |                       ^^^       ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `create_accessors` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking tcpserver1 v0.1.0 (/opt/rustwide/workdir/tcpserver1)
[INFO] [stderr]     Checking learn_library v0.1.0 (/opt/rustwide/workdir/learn_library)
[INFO] [stdout] warning: unused import: `std::path::Path`
[INFO] [stdout]  --> learn_system_call/src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::path::Path;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::os::unix::fs::PermissionsExt`
[INFO] [stdout]  --> learn_system_call/src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::os::unix::fs::PermissionsExt;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]  --> learn_system_call/src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::fs::File;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Read`, `Write`, and `self`
[INFO] [stdout]  --> learn_system_call/src/main.rs:4:15
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::{self, Read, Write};
[INFO] [stdout]   |               ^^^^  ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]  --> learn_system_call/src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::env;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::process::Command`
[INFO] [stdout]  --> learn_system_call/src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::process::Command;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::process`
[INFO] [stdout]  --> learn_system_call/src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::process;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking shadowing v0.1.0 (/opt/rustwide/workdir/shadowing)
[INFO] [stdout] warning: fields `x` and `y` are never read
[INFO] [stdout]   --> learn_library/src/main.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | struct Point {
[INFO] [stdout]    |        ----- fields in this struct
[INFO] [stdout] 9  |     x:i32,
[INFO] [stdout]    |     ^
[INFO] [stdout] 10 |     y:i32,
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Point` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_points` is never used
[INFO] [stdout]   --> learn_library/src/main.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn add_points(p1: Point, p2: Point) -> Point {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Book` is never constructed
[INFO] [stdout]   --> learn_library/src/main.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | struct Book {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `age` is never read
[INFO] [stdout]   --> learn_library/src/main.rs:56:5
[INFO] [stdout]    |
[INFO] [stdout] 54 | struct Person {
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] 55 |     name:String, 
[INFO] [stdout] 56 |     age:u32,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `greet_person` is never used
[INFO] [stdout]   --> learn_library/src/main.rs:78:4
[INFO] [stdout]    |
[INFO] [stdout] 78 | fn greet_person<P: AsRef<str>>(person:P) {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> ownership/src/main.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::rc::{self, Rc, Weak};
[INFO] [stdout]   |               ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> tcpserver1/src/main.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     stream.write_all(&bytes);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let _ = stream.write_all(&bytes);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> ownership/src/main.rs:181:9
[INFO] [stdout]     |
[INFO] [stdout] 181 |     let mut p1 = Rc::new(Person {
[INFO] [stdout]     |         ----^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> ownership/src/main.rs:186:9
[INFO] [stdout]     |
[INFO] [stdout] 186 |     let mut p2 = Rc::new(Person {
[INFO] [stdout]     |         ----^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Student` is never constructed
[INFO] [stdout]  --> ownership/src/main.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct Student {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking tree v0.1.0 (/opt/rustwide/workdir/tree)
[INFO] [stderr]     Checking tcpclient1 v0.1.0 (/opt/rustwide/workdir/tcpclient1)
[INFO] [stdout] warning: unused variable: `size_bytes_len`
[INFO] [stdout]   --> tcpclient1/src/main.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let size_bytes_len = size_bytes.len();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_size_bytes_len`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> tree/src/main.rs:20:17
[INFO] [stdout]    |
[INFO] [stdout] 20 |                 list_files_and_directories(&entry_path, depth + 2);
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 20 |                 let _ = list_files_and_directories(&entry_path, depth + 2);
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> tcpserver1/src/main.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     stream.write_all(&bytes);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let _ = stream.write_all(&bytes);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> tcpclient1/src/main.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     stream.write_all(&bytes);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let _ = stream.write_all(&bytes);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> tcpclient1/src/main.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     stream.flush();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let _ = stream.flush();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `x` and `y` are never read
[INFO] [stdout]   --> learn_library/src/main.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | struct Point {
[INFO] [stdout]    |        ----- fields in this struct
[INFO] [stdout] 9  |     x:i32,
[INFO] [stdout]    |     ^
[INFO] [stdout] 10 |     y:i32,
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Point` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_points` is never used
[INFO] [stdout]   --> learn_library/src/main.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn add_points(p1: Point, p2: Point) -> Point {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Book` is never constructed
[INFO] [stdout]   --> learn_library/src/main.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | struct Book {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `age` is never read
[INFO] [stdout]   --> learn_library/src/main.rs:56:5
[INFO] [stdout]    |
[INFO] [stdout] 54 | struct Person {
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] 55 |     name:String, 
[INFO] [stdout] 56 |     age:u32,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `greet_person` is never used
[INFO] [stdout]   --> learn_library/src/main.rs:78:4
[INFO] [stdout]    |
[INFO] [stdout] 78 | fn greet_person<P: AsRef<str>>(person:P) {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking fibo v0.1.0 (/opt/rustwide/workdir/fibo)
[INFO] [stderr]     Checking shell_terminal v0.1.0 (/opt/rustwide/workdir/shell_terminal)
[INFO] [stderr]     Checking function v0.1.0 (/opt/rustwide/workdir/function)
[INFO] [stdout] warning: unused variable: `size_bytes_len`
[INFO] [stdout]   --> tcpclient1/src/main.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let size_bytes_len = size_bytes.len();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_size_bytes_len`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> tcpclient1/src/main.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     stream.write_all(&bytes);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let _ = stream.write_all(&bytes);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> tcpclient1/src/main.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     stream.flush();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let _ = stream.flush();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]  --> fibo/src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     io::stdin().read_line(&mut n);
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let _ = io::stdin().read_line(&mut n);
[INFO] [stdout]   |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking new_struct v0.1.0 (/opt/rustwide/workdir/new_struct)
[INFO] [stderr]     Checking unrecoverable_error v0.1.0 (/opt/rustwide/workdir/unrecoverable_error)
[INFO] [stderr]     Checking lifetime v0.1.0 (/opt/rustwide/workdir/lifetime)
[INFO] [stdout] warning: unused imports: `BinaryHeap`, `HashMap`, `HashSet`, and `LinkedList`
[INFO] [stdout]  --> unrecoverable_error/src/main.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{BinaryHeap, HashMap, HashSet, LinkedList};
[INFO] [stdout]   |                        ^^^^^^^^^^  ^^^^^^^  ^^^^^^^  ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]  --> new_struct/src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BinaryHeap`, `HashMap`, `HashSet`, and `LinkedList`
[INFO] [stdout]  --> unrecoverable_error/src/main.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{BinaryHeap, HashMap, HashSet, LinkedList};
[INFO] [stdout]   |                        ^^^^^^^^^^  ^^^^^^^  ^^^^^^^  ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling autocxx-build v0.27.1
[INFO] [stderr]     Checking generic_Type v0.1.0 (/opt/rustwide/workdir/generic_Type)
[INFO] [stdout] warning: struct `Student` is never constructed
[INFO] [stdout]  --> new_struct/src/main.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Student {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_student` is never used
[INFO] [stdout]  --> new_struct/src/main.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn create_student(id:i32, name:String, email: String) -> Student {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ElementarySchool` is never constructed
[INFO] [stdout]   --> new_struct/src/main.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | struct ElementarySchool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MiddleSchool` is never constructed
[INFO] [stdout]   --> new_struct/src/main.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | struct MiddleSchool {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `HighSchool` is never constructed
[INFO] [stdout]   --> new_struct/src/main.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | struct HighSchool {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `SchoolKind` is never used
[INFO] [stdout]   --> new_struct/src/main.rs:29:6
[INFO] [stdout]    |
[INFO] [stdout] 29 | enum SchoolKind {
[INFO] [stdout]    |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Message` is never used
[INFO] [stdout]   --> new_struct/src/main.rs:35:6
[INFO] [stdout]    |
[INFO] [stdout] 35 | enum Message {
[INFO] [stdout]    |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `execute` is never used
[INFO] [stdout]   --> new_struct/src/main.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | impl Message {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] 43 |     fn execute(&self) {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_option` is never used
[INFO] [stdout]    --> new_struct/src/main.rs:177:4
[INFO] [stdout]     |
[INFO] [stdout] 177 | fn print_option(val: Option<String>){
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `f32::consts::E`
[INFO] [stdout]  --> generic_Type/src/main.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{f32::consts::E, fs::File, io::{self, Read}};
[INFO] [stdout]   |           ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]  --> new_struct/src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::path::Path`
[INFO] [stdout]  --> learn_system_call/src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::path::Path;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::os::unix::fs::PermissionsExt`
[INFO] [stdout]  --> learn_system_call/src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::os::unix::fs::PermissionsExt;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]  --> learn_system_call/src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::fs::File;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Read`, `Write`, and `self`
[INFO] [stdout]  --> learn_system_call/src/main.rs:4:15
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::{self, Read, Write};
[INFO] [stdout]   |               ^^^^  ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]  --> learn_system_call/src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::env;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::process::Command`
[INFO] [stdout]  --> learn_system_call/src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::process::Command;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::process`
[INFO] [stdout]  --> learn_system_call/src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::process;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]  --> fibo/src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     io::stdin().read_line(&mut n);
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let _ = io::stdin().read_line(&mut n);
[INFO] [stdout]   |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Student` is never constructed
[INFO] [stdout]  --> new_struct/src/main.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Student {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_student` is never used
[INFO] [stdout]  --> new_struct/src/main.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn create_student(id:i32, name:String, email: String) -> Student {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ElementarySchool` is never constructed
[INFO] [stdout]   --> new_struct/src/main.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | struct ElementarySchool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MiddleSchool` is never constructed
[INFO] [stdout]   --> new_struct/src/main.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | struct MiddleSchool {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `HighSchool` is never constructed
[INFO] [stdout]   --> new_struct/src/main.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | struct HighSchool {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `SchoolKind` is never used
[INFO] [stdout]   --> new_struct/src/main.rs:29:6
[INFO] [stdout]    |
[INFO] [stdout] 29 | enum SchoolKind {
[INFO] [stdout]    |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Message` is never used
[INFO] [stdout]   --> new_struct/src/main.rs:35:6
[INFO] [stdout]    |
[INFO] [stdout] 35 | enum Message {
[INFO] [stdout]    |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `execute` is never used
[INFO] [stdout]   --> new_struct/src/main.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | impl Message {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] 43 |     fn execute(&self) {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Score` is never constructed
[INFO] [stdout]   --> new_struct/src/main.rs:54:8
[INFO] [stdout]    |
[INFO] [stdout] 54 | struct Score {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `get_grade` and `from` are never used
[INFO] [stdout]   --> new_struct/src/main.rs:59:8
[INFO] [stdout]    |
[INFO] [stdout] 58 | impl Score {
[INFO] [stdout]    | ---------- associated items in this implementation
[INFO] [stdout] 59 |     fn get_grade(&self) -> String {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 70 |     fn from(score:i32) -> Score {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_option` is never used
[INFO] [stdout]    --> new_struct/src/main.rs:177:4
[INFO] [stdout]     |
[INFO] [stdout] 177 | fn print_option(val: Option<String>){
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> tree/src/main.rs:20:17
[INFO] [stdout]    |
[INFO] [stdout] 20 |                 list_files_and_directories(&entry_path, depth + 2);
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 20 |                 let _ = list_files_and_directories(&entry_path, depth + 2);
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `f32::consts::E`
[INFO] [stdout]  --> generic_Type/src/main.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{f32::consts::E, fs::File, io::{self, Read}};
[INFO] [stdout]   |           ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `say_hello`
[INFO] [stdout]  --> learn_macro/src/main.rs:7:14
[INFO] [stdout]   |
[INFO] [stdout] 7 | macro_rules! say_hello {
[INFO] [stdout]   |              ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `add`
[INFO] [stdout]   --> learn_macro/src/main.rs:16:14
[INFO] [stdout]    |
[INFO] [stdout] 16 | macro_rules! add {
[INFO] [stdout]    |              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `multi_var`
[INFO] [stdout]   --> learn_macro/src/main.rs:54:14
[INFO] [stdout]    |
[INFO] [stdout] 54 | macro_rules! multi_var {
[INFO] [stdout]    |              ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `multiply`
[INFO] [stdout]   --> learn_macro/src/main.rs:62:14
[INFO] [stdout]    |
[INFO] [stdout] 62 | macro_rules! multiply {
[INFO] [stdout]    |              ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `compute`
[INFO] [stdout]   --> learn_macro/src/main.rs:68:14
[INFO] [stdout]    |
[INFO] [stdout] 68 | macro_rules! compute {
[INFO] [stdout]    |              ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ident_func` is never used
[INFO] [stdout]   --> learn_macro/src/main.rs:30:18
[INFO] [stdout]    |
[INFO] [stdout] 30 | create_function!(ident_func);
[INFO] [stdout]    |                  ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `create_function` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Person` is never constructed
[INFO] [stdout]   --> learn_macro/src/main.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 44 | struct Person {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `name`, `set_name`, `age`, and `set_age` are never used
[INFO] [stdout]   --> learn_macro/src/main.rs:50:23
[INFO] [stdout]    |
[INFO] [stdout] 49 | impl Person {
[INFO] [stdout]    | ----------- methods in this implementation
[INFO] [stdout] 50 |     create_accessors!(name, String, set_name);
[INFO] [stdout]    |                       ^^^^          ^^^^^^^^
[INFO] [stdout] 51 |     create_accessors!(age, u32, set_age);
[INFO] [stdout]    |                       ^^^       ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `create_accessors` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::business::user::UserManager`
[INFO] [stdout]  --> filedb/src/database/file_db.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::business::user::UserManager;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `business::user::User`
[INFO] [stdout]  --> filedb/src/lib.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use business::user::User;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `business::user::UserManager`
[INFO] [stdout]  --> filedb/src/lib.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use business::user::UserManager;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> filedb/src/business/user.rs:26:13
[INFO] [stdout]    |
[INFO] [stdout] 26 |         let mut user = User {
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> filedb/src/business/user.rs:62:9
[INFO] [stdout]    |
[INFO] [stdout] 62 |         file_db::save(String::from("file.db"), self.get_all());
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 62 |         let _ = file_db::save(String::from("file.db"), self.get_all());
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking hyper v0.14.32
[INFO] [stderr]    Compiling learn_autocxx v0.1.0 (/opt/rustwide/workdir/learn_autocxx)
[INFO] [stdout] warning: unused variable: `path`
[INFO] [stdout]  --> learn_autocxx/build.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let path = PathBuf::from("src");
[INFO] [stdout]   |         ^^^^ help: if this is intentional, prefix it with an underscore: `_path`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking network v0.1.0 (/opt/rustwide/workdir/network)
[INFO] [stdout] warning: unused imports: `Buf` and `self`
[INFO] [stdout]  --> network/src/main.rs:1:19
[INFO] [stdout]   |
[INFO] [stdout] 1 | use hyper::body::{self, Buf};
[INFO] [stdout]   |                   ^^^^  ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `hyper::Client`
[INFO] [stdout]  --> network/src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use hyper::Client;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking c_rust v0.1.0 (/opt/rustwide/workdir/c_src/c_rust)
[INFO] [stdout] warning: unused imports: `Buf` and `self`
[INFO] [stdout]  --> network/src/main.rs:1:19
[INFO] [stdout]   |
[INFO] [stdout] 1 | use hyper::body::{self, Buf};
[INFO] [stdout]   |                   ^^^^  ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `hyper::Client`
[INFO] [stdout]  --> network/src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use hyper::Client;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: environment variable `OUT_DIR` not defined at compile time
[INFO] [stdout]  --> c_src/c_rust/src/main.rs:4:22
[INFO] [stdout]   |
[INFO] [stdout] 4 |     include!(concat!(env!("OUT_DIR"), "/bindings.rs"));
[INFO] [stdout]   |                      ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: Cargo sets build script variables at run time. Use `std::env::var("OUT_DIR")` instead
[INFO] [stdout]   = note: this error originates in the macro `env` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: environment variable `OUT_DIR` not defined at compile time
[INFO] [stdout]  --> c_src/c_rust/src/main.rs:4:22
[INFO] [stdout]   |
[INFO] [stdout] 4 |     include!(concat!(env!("OUT_DIR"), "/bindings.rs"));
[INFO] [stdout]   |                      ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: Cargo sets build script variables at run time. Use `std::env::var("OUT_DIR")` instead
[INFO] [stdout]   = note: this error originates in the macro `env` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `hello` in module `bindings`
[INFO] [stdout]   --> c_src/c_rust/src/main.rs:11:19
[INFO] [stdout]    |
[INFO] [stdout] 11 |         bindings::hello(c_to_print.as_ptr());
[INFO] [stdout]    |                   ^^^^^ not found in `bindings`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `hello` in module `bindings`
[INFO] [stdout]   --> c_src/c_rust/src/main.rs:11:19
[INFO] [stdout]    |
[INFO] [stdout] 11 |         bindings::hello(c_to_print.as_ptr());
[INFO] [stdout]    |                   ^^^^^ not found in `bindings`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `c_rust` (bin "c_rust" test) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `c_rust` (bin "c_rust") due to 2 previous errors
[INFO] [stdout] warning: fields `id` and `name` are never read
[INFO] [stdout]   --> network/src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct User {
[INFO] [stdout]    |        ---- fields in this struct
[INFO] [stdout] 12 |     id: i32,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 13 |     name:String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `User` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id` and `name` are never read
[INFO] [stdout]   --> network/src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct User {
[INFO] [stdout]    |        ---- fields in this struct
[INFO] [stdout] 12 |     id: i32,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 13 |     name:String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `User` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "222749a2809f1ac352c83ae82235430b04e43f198dc179e9fedee48890033bbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "222749a2809f1ac352c83ae82235430b04e43f198dc179e9fedee48890033bbb", kill_on_drop: false }`
[INFO] [stdout] 222749a2809f1ac352c83ae82235430b04e43f198dc179e9fedee48890033bbb