[INFO] cloning repository https://github.com/kotamat/rust_tutorial
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kotamat/rust_tutorial" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkotamat%2Frust_tutorial", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkotamat%2Frust_tutorial'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bf3226407efe0da3edb393fb0babbde348c0bea3
[INFO] checking kotamat/rust_tutorial against 444dcce484c66c8d626806a8556be3b4d3ef381a for pr-160902
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkotamat%2Frust_tutorial" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/kotamat/rust_tutorial
[INFO] finished tweaking git repo https://github.com/kotamat/rust_tutorial
[INFO] tweaked toml for git repo https://github.com/kotamat/rust_tutorial written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/kotamat/rust_tutorial on toolchain 444dcce484c66c8d626806a8556be3b4d3ef381a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+444dcce484c66c8d626806a8556be3b4d3ef381a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/kotamat/rust_tutorial 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" "+444dcce484c66c8d626806a8556be3b4d3ef381a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rand_hc v0.3.1
[INFO] [stderr]   Downloaded rand_core v0.6.3
[INFO] [stderr]   Downloaded wasi v0.10.2+wasi-snapshot-preview1
[INFO] [stderr]   Downloaded getrandom v0.2.3
[INFO] [stderr]   Downloaded rand v0.8.4
[INFO] [stderr]   Downloaded ppv-lite86 v0.2.10
[INFO] [stderr]   Downloaded libc v0.2.97
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 6cb06081cf80710e68a69f9aa70e276dab5cb6898244d0fba735595567aa7e73
[INFO] running `Command { std: "docker" "start" "6cb06081cf80710e68a69f9aa70e276dab5cb6898244d0fba735595567aa7e73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6cb06081cf80710e68a69f9aa70e276dab5cb6898244d0fba735595567aa7e73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "6cb06081cf80710e68a69f9aa70e276dab5cb6898244d0fba735595567aa7e73" "/opt/rustwide/cargo-home/bin/cargo" "+444dcce484c66c8d626806a8556be3b4d3ef381a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6cb06081cf80710e68a69f9aa70e276dab5cb6898244d0fba735595567aa7e73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "6cb06081cf80710e68a69f9aa70e276dab5cb6898244d0fba735595567aa7e73" "/opt/rustwide/cargo-home/bin/cargo" "+444dcce484c66c8d626806a8556be3b4d3ef381a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking tests v0.1.0 (/opt/rustwide/workdir/tests)
[INFO] [stderr]     Checking restaurant v0.1.0 (/opt/rustwide/workdir/restaurant)
[INFO] [stderr]     Checking rust_tutorial v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking variable v0.1.0 (/opt/rustwide/workdir/variable)
[INFO] [stderr]     Checking pattern_match v0.1.0 (/opt/rustwide/workdir/pattern_match)
[INFO] [stderr]     Checking ownership v0.1.0 (/opt/rustwide/workdir/ownership)
[INFO] [stderr]     Checking oop v0.1.0 (/opt/rustwide/workdir/oop)
[INFO] [stderr]     Checking macros v0.1.0 (/opt/rustwide/workdir/macros)
[INFO] [stdout] warning: unused variable: `order1`
[INFO] [stdout]   --> restaurant/src/lib.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let order1 = Soup;
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_order1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `order2`
[INFO] [stdout]   --> restaurant/src/lib.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |     let order2 = Salad;
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_order2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `serve_order` is never used
[INFO] [stdout]  --> restaurant/src/lib.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn serve_order() {}
[INFO] [stdout]   |    ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fix_incorrect_order` is never used
[INFO] [stdout]   --> restaurant/src/lib.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fn fix_incorrect_order() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `cook_order` is never used
[INFO] [stdout]   --> restaurant/src/lib.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn cook_order() {}
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `seasonal_fruit` is never read
[INFO] [stdout]   --> restaurant/src/lib.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub struct Breakfast {
[INFO] [stdout]    |                --------- field in this struct
[INFO] [stdout] 18 |         pub toast: String,
[INFO] [stdout] 19 |         seasonal_fruit: String,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0502]: cannot borrow `s` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> ownership/src/main.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let word = first_word(&s);
[INFO] [stdout]    |                           -- immutable borrow occurs here
[INFO] [stdout] 24 |     s.clear();
[INFO] [stdout]    |     ^^^^^^^^^ mutable borrow occurs here
[INFO] [stdout] 25 |     println!("the first word is: {}", word);
[INFO] [stdout]    |                                       ---- immutable borrow later used here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0502`.
[INFO] [stdout] 
[INFO] [stdout] error[E0502]: cannot borrow `s` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> ownership/src/main.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let word = first_word(&s);
[INFO] [stdout]    |                           -- immutable borrow occurs here
[INFO] [stdout] 24 |     s.clear();
[INFO] [stdout]    |     ^^^^^^^^^ mutable borrow occurs here
[INFO] [stdout] 25 |     println!("the first word is: {}", word);
[INFO] [stdout]    |                                       ---- immutable borrow later used here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0502`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ownership` (bin "ownership") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `ownership` (bin "ownership" test) due to 1 previous error
[INFO] [stdout] warning: unused imports: `BorrowMut` and `Borrow`
[INFO] [stdout]  --> oop/src/oo_design_patterns.rs:1:19
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::borrow::{Borrow, BorrowMut};
[INFO] [stdout]   |                   ^^^^^^  ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `post`
[INFO] [stdout]   --> oop/src/oo_design_patterns.rs:69:27
[INFO] [stdout]    |
[INFO] [stdout] 69 |     fn content<'a>(&self, post: &'a Post) -> &'a str {
[INFO] [stdout]    |                           ^^^^ help: if this is intentional, prefix it with an underscore: `_post`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `reject` is never used
[INFO] [stdout]   --> oop/src/oo_design_patterns.rs:55:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl Post {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 55 |     pub fn reject(&mut self) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `reject` is never used
[INFO] [stdout]   --> oop/src/oo_design_patterns.rs:68:8
[INFO] [stdout]    |
[INFO] [stdout] 62 | trait State {
[INFO] [stdout]    |       ----- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 68 |     fn reject(self: Box<Self>) -> Box<dyn State>;
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Screen2` is never constructed
[INFO] [stdout]   --> oop/src/trait_object.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | struct Screen2<T: Draw> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `run` is never used
[INFO] [stdout]   --> oop/src/trait_object.rs:47:12
[INFO] [stdout]    |
[INFO] [stdout] 43 | / impl<T> Screen2<T>
[INFO] [stdout] 44 | | where
[INFO] [stdout] 45 | |     T: Draw,
[INFO] [stdout]    | |____________- method in this implementation
[INFO] [stdout] 46 |   {
[INFO] [stdout] 47 |       pub fn run(&self) {
[INFO] [stdout]    |              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `width`, `height`, and `label` are never read
[INFO] [stdout]   --> oop/src/trait_object.rs:55:9
[INFO] [stdout]    |
[INFO] [stdout] 54 | pub struct Button {
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] 55 |     pub width: u32,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 56 |     pub height: u32,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 57 |     pub label: String,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `width`, `height`, and `options` are never read
[INFO] [stdout]   --> oop/src/trait_object.rs:67:5
[INFO] [stdout]    |
[INFO] [stdout] 66 | struct SelectBox {
[INFO] [stdout]    |        --------- fields in this struct
[INFO] [stdout] 67 |     width: u32,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 68 |     height: u32,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 69 |     options: Vec<String>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]   --> tests/src/lib.rs:63:17
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub fn greeting(name: &str) -> String {
[INFO] [stdout]    |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Rectangle` is never constructed
[INFO] [stdout]   --> tests/src/lib.rs:52:8
[INFO] [stdout]    |
[INFO] [stdout] 52 | struct Rectangle {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `order1`
[INFO] [stdout]   --> restaurant/src/lib.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let order1 = Soup;
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_order1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `can_hold` is never used
[INFO] [stdout]   --> tests/src/lib.rs:58:8
[INFO] [stdout]    |
[INFO] [stdout] 57 | impl Rectangle {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] 58 |     fn can_hold(&self, other: &Rectangle) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `order2`
[INFO] [stdout]   --> restaurant/src/lib.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |     let order2 = Salad;
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_order2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]   --> tests/src/lib.rs:69:5
[INFO] [stdout]    |
[INFO] [stdout] 68 | pub struct Guess {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] 69 |     value: i32,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `serve_order` is never used
[INFO] [stdout]  --> restaurant/src/lib.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn serve_order() {}
[INFO] [stdout]   |    ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fix_incorrect_order` is never used
[INFO] [stdout]   --> restaurant/src/lib.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fn fix_incorrect_order() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `cook_order` is never used
[INFO] [stdout]   --> restaurant/src/lib.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn cook_order() {}
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `seasonal_fruit` is never read
[INFO] [stdout]   --> restaurant/src/lib.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub struct Breakfast {
[INFO] [stdout]    |                --------- field in this struct
[INFO] [stdout] 18 |         pub toast: String,
[INFO] [stdout] 19 |         seasonal_fruit: String,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_two` is never used
[INFO] [stdout]  --> tests/src/test_organization.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn add_two(a: i32) -> i32 {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `internal_adder` is never used
[INFO] [stdout]  --> tests/src/test_organization.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn internal_adder(a: i32, b: i32) -> i32 {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BorrowMut` and `Borrow`
[INFO] [stdout]  --> oop/src/oo_design_patterns.rs:1:19
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::borrow::{Borrow, BorrowMut};
[INFO] [stdout]   |                   ^^^^^^  ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Quit`, `Move`, and `Write` are never constructed
[INFO] [stdout]   --> pattern_match/src/pattern.rs:90:5
[INFO] [stdout]    |
[INFO] [stdout] 89 | enum Message {
[INFO] [stdout]    |      ------- variants in this enum
[INFO] [stdout] 90 |     Quit,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 91 |     Move { x: i32, y: i32 },
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 92 |     Write(String),
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Rgb` is never constructed
[INFO] [stdout]   --> pattern_match/src/pattern.rs:96:5
[INFO] [stdout]    |
[INFO] [stdout] 95 | enum Color {
[INFO] [stdout]    |      ----- variant in this enum
[INFO] [stdout] 96 |     Rgb(i32, i32, i32),
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Quit`, `Move`, and `Write` are never constructed
[INFO] [stdout]    --> pattern_match/src/pattern.rs:100:5
[INFO] [stdout]     |
[INFO] [stdout]  99 | enum Message2 {
[INFO] [stdout]     |      -------- variants in this enum
[INFO] [stdout] 100 |     Quit,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 101 |     Move { x: i32, y: i32 },
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 102 |     Write(String),
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `post`
[INFO] [stdout]   --> oop/src/oo_design_patterns.rs:69:27
[INFO] [stdout]    |
[INFO] [stdout] 69 |     fn content<'a>(&self, post: &'a Post) -> &'a str {
[INFO] [stdout]    |                           ^^^^ help: if this is intentional, prefix it with an underscore: `_post`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Screen2` is never constructed
[INFO] [stdout]   --> oop/src/trait_object.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | struct Screen2<T: Draw> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Quit`, `Move`, and `Write` are never constructed
[INFO] [stdout]   --> pattern_match/src/pattern.rs:90:5
[INFO] [stdout]    |
[INFO] [stdout] 89 | enum Message {
[INFO] [stdout]    |      ------- variants in this enum
[INFO] [stdout] 90 |     Quit,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 91 |     Move { x: i32, y: i32 },
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 92 |     Write(String),
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Rgb` is never constructed
[INFO] [stdout]   --> pattern_match/src/pattern.rs:96:5
[INFO] [stdout]    |
[INFO] [stdout] 95 | enum Color {
[INFO] [stdout]    |      ----- variant in this enum
[INFO] [stdout] 96 |     Rgb(i32, i32, i32),
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Quit`, `Move`, and `Write` are never constructed
[INFO] [stdout]    --> pattern_match/src/pattern.rs:100:5
[INFO] [stdout]     |
[INFO] [stdout]  99 | enum Message2 {
[INFO] [stdout]     |      -------- variants in this enum
[INFO] [stdout] 100 |     Quit,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 101 |     Move { x: i32, y: i32 },
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 102 |     Write(String),
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `run` is never used
[INFO] [stdout]   --> oop/src/trait_object.rs:47:12
[INFO] [stdout]    |
[INFO] [stdout] 43 | / impl<T> Screen2<T>
[INFO] [stdout] 44 | | where
[INFO] [stdout] 45 | |     T: Draw,
[INFO] [stdout]    | |____________- method in this implementation
[INFO] [stdout] 46 |   {
[INFO] [stdout] 47 |       pub fn run(&self) {
[INFO] [stdout]    |              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `width`, `height`, and `label` are never read
[INFO] [stdout]   --> oop/src/trait_object.rs:55:9
[INFO] [stdout]    |
[INFO] [stdout] 54 | pub struct Button {
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] 55 |     pub width: u32,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 56 |     pub height: u32,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 57 |     pub label: String,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `width`, `height`, and `options` are never read
[INFO] [stdout]   --> oop/src/trait_object.rs:67:5
[INFO] [stdout]    |
[INFO] [stdout] 66 | struct SelectBox {
[INFO] [stdout]    |        --------- fields in this struct
[INFO] [stdout] 67 |     width: u32,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 68 |     height: u32,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 69 |     options: Vec<String>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "6cb06081cf80710e68a69f9aa70e276dab5cb6898244d0fba735595567aa7e73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6cb06081cf80710e68a69f9aa70e276dab5cb6898244d0fba735595567aa7e73", kill_on_drop: false }`
[INFO] [stdout] 6cb06081cf80710e68a69f9aa70e276dab5cb6898244d0fba735595567aa7e73
