[INFO] cloning repository https://github.com/AndryMaster/rust-learning
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AndryMaster/rust-learning" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAndryMaster%2Frust-learning", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAndryMaster%2Frust-learning'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 005f7c186bf708cf62db42af5bc243d6f329383e
[INFO] checking AndryMaster/rust-learning against master#3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0 for pr-143164
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAndryMaster%2Frust-learning" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/AndryMaster/rust-learning
[INFO] finished tweaking git repo https://github.com/AndryMaster/rust-learning
[INFO] tweaked toml for git repo https://github.com/AndryMaster/rust-learning written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/AndryMaster/rust-learning on toolchain 3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/AndryMaster/rust-learning 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" "+3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 71137b26ecf0504ff9730a0f9b160b094866293ff647ca0cee2d4638573a56d6
[INFO] running `Command { std: "docker" "start" "-a" "71137b26ecf0504ff9730a0f9b160b094866293ff647ca0cee2d4638573a56d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "71137b26ecf0504ff9730a0f9b160b094866293ff647ca0cee2d4638573a56d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71137b26ecf0504ff9730a0f9b160b094866293ff647ca0cee2d4638573a56d6", kill_on_drop: false }`
[INFO] [stdout] 71137b26ecf0504ff9730a0f9b160b094866293ff647ca0cee2d4638573a56d6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] abfa137631e88db85205efc39f8ed0340c149ff1c896faa10a501f3ba1e25206
[INFO] running `Command { std: "docker" "start" "-a" "abfa137631e88db85205efc39f8ed0340c149ff1c896faa10a501f3ba1e25206", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-learning v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/part_2.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let b: i8 = 127;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/part_2.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let b: i32 = 1_000_000_000;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/part_2.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let b: isize = 1;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/part_2.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let b = 1_456_i16;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/part_2.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let f: f32 = 2.0004;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/part_2.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let b: bool = false;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num1`
[INFO] [stdout]   --> src/part_2.rs:90:9
[INFO] [stdout]    |
[INFO] [stdout] 90 |     let num1 = sum1(5, 2);
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_num1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num3`
[INFO] [stdout]   --> src/part_2.rs:92:9
[INFO] [stdout]    |
[INFO] [stdout] 92 |     let num3 = sum3(5, 2);
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_num3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `season` is never read
[INFO] [stdout]   --> src/part_3.rs:88:13
[INFO] [stdout]    |
[INFO] [stdout] 88 |     let mut season = Season::Spring;
[INFO] [stdout]    |             ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `res`
[INFO] [stdout]   --> src/part_4.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let res = create_let();
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_res`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `is_older`
[INFO] [stdout]   --> src/part_5_1.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let is_older = tom.is_older(&bob);
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_is_older`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sam`
[INFO] [stdout]   --> src/part_5_1.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let sam = Person::create("Sam", 12);
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_sam`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/part_2.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let b: i8 = 127;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/part_2.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let b: i32 = 1_000_000_000;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/part_2.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let b: isize = 1;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/part_2.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let b = 1_456_i16;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/part_2.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let f: f32 = 2.0004;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/part_2.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let b: bool = false;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num1`
[INFO] [stdout]   --> src/part_2.rs:90:9
[INFO] [stdout]    |
[INFO] [stdout] 90 |     let num1 = sum1(5, 2);
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_num1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num3`
[INFO] [stdout]   --> src/part_2.rs:92:9
[INFO] [stdout]    |
[INFO] [stdout] 92 |     let num3 = sum3(5, 2);
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_num3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f1_start` is never used
[INFO] [stdout]  --> src/part_2.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn f1_start() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f2_let_type` is never used
[INFO] [stdout]  --> src/part_2.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn f2_let_type() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f3_if_match` is never used
[INFO] [stdout]   --> src/part_2.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub fn f3_if_match() {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f4_loops` is never used
[INFO] [stdout]   --> src/part_2.rs:51:8
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub fn f4_loops() {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f5_fn` is never used
[INFO] [stdout]   --> src/part_2.rs:69:8
[INFO] [stdout]    |
[INFO] [stdout] 69 | pub fn f5_fn() {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f6_const` is never used
[INFO] [stdout]    --> src/part_2.rs:100:8
[INFO] [stdout]     |
[INFO] [stdout] 100 | pub fn f6_const() {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f7_fn2` is never used
[INFO] [stdout]    --> src/part_2.rs:105:8
[INFO] [stdout]     |
[INFO] [stdout] 105 | pub fn f7_fn2() {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f1_tuple` is never used
[INFO] [stdout]  --> src/part_3.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn f1_tuple() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f2_array` is never used
[INFO] [stdout]   --> src/part_3.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub fn f2_array() {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f3_struct` is never used
[INFO] [stdout]   --> src/part_3.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub fn f3_struct() {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f4_enum` is never used
[INFO] [stdout]   --> src/part_3.rs:80:8
[INFO] [stdout]    |
[INFO] [stdout] 80 | pub fn f4_enum() {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f1_owner` is never used
[INFO] [stdout]  --> src/part_4.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn f1_owner() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f2_reference` is never used
[INFO] [stdout]   --> src/part_4.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn f2_reference() {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f3_return_ref` is never used
[INFO] [stdout]   --> src/part_4.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub fn f3_return_ref() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f4_mut_reference` is never used
[INFO] [stdout]   --> src/part_4.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub fn f4_mut_reference() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f5_owner_2` is never used
[INFO] [stdout]   --> src/part_4.rs:82:8
[INFO] [stdout]    |
[INFO] [stdout] 82 | pub fn f5_owner_2() {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f6_owner_3` is never used
[INFO] [stdout]    --> src/part_4.rs:108:8
[INFO] [stdout]     |
[INFO] [stdout] 108 | pub fn f6_owner_3() {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f1_impl` is never used
[INFO] [stdout]  --> src/part_5_1.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn f1_impl() {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Person` is never constructed
[INFO] [stdout]   --> src/part_5_1.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | struct Person
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `display`, `change_age`, `is_older`, `say_hello`, and `create` are never used
[INFO] [stdout]   --> src/part_5_1.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | impl Person {
[INFO] [stdout]    | ----------- associated items in this implementation
[INFO] [stdout] 27 |     fn display(&self){
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 31 |     fn change_age(&mut self, age: u8){
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 35 |     fn is_older(&self, other: &Person) -> bool{
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 39 |     fn say_hello(&self, other: &Person, hour: u8){
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 |     fn create(user_name: &str, user_age: u8) -> Self{
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f2_trait` is never used
[INFO] [stdout]   --> src/part_5_1.rs:58:8
[INFO] [stdout]    |
[INFO] [stdout] 58 | pub fn f2_trait() {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Printer` is never used
[INFO] [stdout]   --> src/part_5_1.rs:63:7
[INFO] [stdout]    |
[INFO] [stdout] 63 | trait Printer{
[INFO] [stdout]    |       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Message` is never constructed
[INFO] [stdout]   --> src/part_5_1.rs:75:8
[INFO] [stdout]    |
[INFO] [stdout] 75 | struct Message { text: String }
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f3_trait2` is never used
[INFO] [stdout]   --> src/part_5_1.rs:80:8
[INFO] [stdout]    |
[INFO] [stdout] 80 | pub fn f3_trait2() {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `display` is never used
[INFO] [stdout]   --> src/part_5_1.rs:88:4
[INFO] [stdout]    |
[INFO] [stdout] 88 | fn display(printable: &impl Printer) {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f4_generic` is never used
[INFO] [stdout]   --> src/part_5_1.rs:94:8
[INFO] [stdout]    |
[INFO] [stdout] 94 | pub fn f4_generic() {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `User` is never constructed
[INFO] [stdout]    --> src/part_5_1.rs:105:8
[INFO] [stdout]     |
[INFO] [stdout] 105 | struct User<T> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]    --> src/part_5_1.rs:109:8
[INFO] [stdout]     |
[INFO] [stdout] 109 | struct Point<T> {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f5_overload` is never used
[INFO] [stdout]    --> src/part_5_1.rs:116:8
[INFO] [stdout]     |
[INFO] [stdout] 116 | pub fn f5_overload() {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f6_type` is never used
[INFO] [stdout]  --> src/part_5_2.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn f6_type() {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Circle` is never constructed
[INFO] [stdout]   --> src/part_5_2.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | struct Circle { radius:f64 }
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Rectangle` is never constructed
[INFO] [stdout]   --> src/part_5_2.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | struct Rectangle { width:f64, height:f64 }
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Shape` is never used
[INFO] [stdout]   --> src/part_5_2.rs:19:7
[INFO] [stdout]    |
[INFO] [stdout] 19 | trait Shape{
[INFO] [stdout]    |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Area` is never used
[INFO] [stdout]   --> src/part_5_2.rs:32:7
[INFO] [stdout]    |
[INFO] [stdout] 32 | trait Area {
[INFO] [stdout]    |       ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_area` is never used
[INFO] [stdout]   --> src/part_5_2.rs:45:4
[INFO] [stdout]    |
[INFO] [stdout] 45 | fn print_area(shape: &dyn Area) {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f7_type_trait` is never used
[INFO] [stdout]   --> src/part_5_2.rs:54:8
[INFO] [stdout]    |
[INFO] [stdout] 54 | pub fn f7_type_trait() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `attack` is never used
[INFO] [stdout]   --> src/part_5_2.rs:60:4
[INFO] [stdout]    |
[INFO] [stdout] 60 | fn attack<C: Character>() {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Character` is never used
[INFO] [stdout]   --> src/part_5_2.rs:66:7
[INFO] [stdout]    |
[INFO] [stdout] 66 | trait Character {
[INFO] [stdout]    |       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Weapon` is never used
[INFO] [stdout]   --> src/part_5_2.rs:73:7
[INFO] [stdout]    |
[INFO] [stdout] 73 | trait Weapon {
[INFO] [stdout]    |       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Knight` is never constructed
[INFO] [stdout]   --> src/part_5_2.rs:77:8
[INFO] [stdout]    |
[INFO] [stdout] 77 | struct Knight;
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Mage` is never constructed
[INFO] [stdout]   --> src/part_5_2.rs:78:8
[INFO] [stdout]    |
[INFO] [stdout] 78 | struct Mage;
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f8_debug` is never used
[INFO] [stdout]    --> src/part_5_2.rs:112:8
[INFO] [stdout]     |
[INFO] [stdout] 112 | pub fn f8_debug() {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Person` is never constructed
[INFO] [stdout]    --> src/part_5_2.rs:119:8
[INFO] [stdout]     |
[INFO] [stdout] 119 | struct Person
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_message_static` is never used
[INFO] [stdout]    --> src/part_6.rs:120:4
[INFO] [stdout]     |
[INFO] [stdout] 120 | fn get_message_static() -> &'static str {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `season` is never read
[INFO] [stdout]   --> src/part_3.rs:88:13
[INFO] [stdout]    |
[INFO] [stdout] 88 |     let mut season = Season::Spring;
[INFO] [stdout]    |             ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `res`
[INFO] [stdout]   --> src/part_4.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let res = create_let();
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_res`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `is_older`
[INFO] [stdout]   --> src/part_5_1.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let is_older = tom.is_older(&bob);
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_is_older`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sam`
[INFO] [stdout]   --> src/part_5_1.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let sam = Person::create("Sam", 12);
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_sam`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f1_start` is never used
[INFO] [stdout]  --> src/part_2.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn f1_start() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f2_let_type` is never used
[INFO] [stdout]  --> src/part_2.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn f2_let_type() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f3_if_match` is never used
[INFO] [stdout]   --> src/part_2.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub fn f3_if_match() {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f4_loops` is never used
[INFO] [stdout]   --> src/part_2.rs:51:8
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub fn f4_loops() {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f5_fn` is never used
[INFO] [stdout]   --> src/part_2.rs:69:8
[INFO] [stdout]    |
[INFO] [stdout] 69 | pub fn f5_fn() {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f6_const` is never used
[INFO] [stdout]    --> src/part_2.rs:100:8
[INFO] [stdout]     |
[INFO] [stdout] 100 | pub fn f6_const() {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f7_fn2` is never used
[INFO] [stdout]    --> src/part_2.rs:105:8
[INFO] [stdout]     |
[INFO] [stdout] 105 | pub fn f7_fn2() {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f1_tuple` is never used
[INFO] [stdout]  --> src/part_3.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn f1_tuple() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f2_array` is never used
[INFO] [stdout]   --> src/part_3.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub fn f2_array() {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f3_struct` is never used
[INFO] [stdout]   --> src/part_3.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub fn f3_struct() {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f4_enum` is never used
[INFO] [stdout]   --> src/part_3.rs:80:8
[INFO] [stdout]    |
[INFO] [stdout] 80 | pub fn f4_enum() {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f1_owner` is never used
[INFO] [stdout]  --> src/part_4.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn f1_owner() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f2_reference` is never used
[INFO] [stdout]   --> src/part_4.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn f2_reference() {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f3_return_ref` is never used
[INFO] [stdout]   --> src/part_4.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub fn f3_return_ref() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f4_mut_reference` is never used
[INFO] [stdout]   --> src/part_4.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub fn f4_mut_reference() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f5_owner_2` is never used
[INFO] [stdout]   --> src/part_4.rs:82:8
[INFO] [stdout]    |
[INFO] [stdout] 82 | pub fn f5_owner_2() {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f6_owner_3` is never used
[INFO] [stdout]    --> src/part_4.rs:108:8
[INFO] [stdout]     |
[INFO] [stdout] 108 | pub fn f6_owner_3() {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f1_impl` is never used
[INFO] [stdout]  --> src/part_5_1.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn f1_impl() {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Person` is never constructed
[INFO] [stdout]   --> src/part_5_1.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | struct Person
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `display`, `change_age`, `is_older`, `say_hello`, and `create` are never used
[INFO] [stdout]   --> src/part_5_1.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | impl Person {
[INFO] [stdout]    | ----------- associated items in this implementation
[INFO] [stdout] 27 |     fn display(&self){
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 31 |     fn change_age(&mut self, age: u8){
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 35 |     fn is_older(&self, other: &Person) -> bool{
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 39 |     fn say_hello(&self, other: &Person, hour: u8){
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 |     fn create(user_name: &str, user_age: u8) -> Self{
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f2_trait` is never used
[INFO] [stdout]   --> src/part_5_1.rs:58:8
[INFO] [stdout]    |
[INFO] [stdout] 58 | pub fn f2_trait() {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Printer` is never used
[INFO] [stdout]   --> src/part_5_1.rs:63:7
[INFO] [stdout]    |
[INFO] [stdout] 63 | trait Printer{
[INFO] [stdout]    |       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Message` is never constructed
[INFO] [stdout]   --> src/part_5_1.rs:75:8
[INFO] [stdout]    |
[INFO] [stdout] 75 | struct Message { text: String }
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f3_trait2` is never used
[INFO] [stdout]   --> src/part_5_1.rs:80:8
[INFO] [stdout]    |
[INFO] [stdout] 80 | pub fn f3_trait2() {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `display` is never used
[INFO] [stdout]   --> src/part_5_1.rs:88:4
[INFO] [stdout]    |
[INFO] [stdout] 88 | fn display(printable: &impl Printer) {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f4_generic` is never used
[INFO] [stdout]   --> src/part_5_1.rs:94:8
[INFO] [stdout]    |
[INFO] [stdout] 94 | pub fn f4_generic() {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `User` is never constructed
[INFO] [stdout]    --> src/part_5_1.rs:105:8
[INFO] [stdout]     |
[INFO] [stdout] 105 | struct User<T> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]    --> src/part_5_1.rs:109:8
[INFO] [stdout]     |
[INFO] [stdout] 109 | struct Point<T> {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f5_overload` is never used
[INFO] [stdout]    --> src/part_5_1.rs:116:8
[INFO] [stdout]     |
[INFO] [stdout] 116 | pub fn f5_overload() {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f6_type` is never used
[INFO] [stdout]  --> src/part_5_2.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn f6_type() {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Circle` is never constructed
[INFO] [stdout]   --> src/part_5_2.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | struct Circle { radius:f64 }
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Rectangle` is never constructed
[INFO] [stdout]   --> src/part_5_2.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | struct Rectangle { width:f64, height:f64 }
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Shape` is never used
[INFO] [stdout]   --> src/part_5_2.rs:19:7
[INFO] [stdout]    |
[INFO] [stdout] 19 | trait Shape{
[INFO] [stdout]    |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Area` is never used
[INFO] [stdout]   --> src/part_5_2.rs:32:7
[INFO] [stdout]    |
[INFO] [stdout] 32 | trait Area {
[INFO] [stdout]    |       ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_area` is never used
[INFO] [stdout]   --> src/part_5_2.rs:45:4
[INFO] [stdout]    |
[INFO] [stdout] 45 | fn print_area(shape: &dyn Area) {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f7_type_trait` is never used
[INFO] [stdout]   --> src/part_5_2.rs:54:8
[INFO] [stdout]    |
[INFO] [stdout] 54 | pub fn f7_type_trait() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `attack` is never used
[INFO] [stdout]   --> src/part_5_2.rs:60:4
[INFO] [stdout]    |
[INFO] [stdout] 60 | fn attack<C: Character>() {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Character` is never used
[INFO] [stdout]   --> src/part_5_2.rs:66:7
[INFO] [stdout]    |
[INFO] [stdout] 66 | trait Character {
[INFO] [stdout]    |       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Weapon` is never used
[INFO] [stdout]   --> src/part_5_2.rs:73:7
[INFO] [stdout]    |
[INFO] [stdout] 73 | trait Weapon {
[INFO] [stdout]    |       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Knight` is never constructed
[INFO] [stdout]   --> src/part_5_2.rs:77:8
[INFO] [stdout]    |
[INFO] [stdout] 77 | struct Knight;
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Mage` is never constructed
[INFO] [stdout]   --> src/part_5_2.rs:78:8
[INFO] [stdout]    |
[INFO] [stdout] 78 | struct Mage;
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f8_debug` is never used
[INFO] [stdout]    --> src/part_5_2.rs:112:8
[INFO] [stdout]     |
[INFO] [stdout] 112 | pub fn f8_debug() {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Person` is never constructed
[INFO] [stdout]    --> src/part_5_2.rs:119:8
[INFO] [stdout]     |
[INFO] [stdout] 119 | struct Person
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_message_static` is never used
[INFO] [stdout]    --> src/part_6.rs:120:4
[INFO] [stdout]     |
[INFO] [stdout] 120 | fn get_message_static() -> &'static str {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "abfa137631e88db85205efc39f8ed0340c149ff1c896faa10a501f3ba1e25206", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "abfa137631e88db85205efc39f8ed0340c149ff1c896faa10a501f3ba1e25206", kill_on_drop: false }`
[INFO] [stdout] abfa137631e88db85205efc39f8ed0340c149ff1c896faa10a501f3ba1e25206
