[INFO] cloning repository https://github.com/ASPDragon/Learning_Rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ASPDragon/Learning_Rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FASPDragon%2FLearning_Rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FASPDragon%2FLearning_Rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 229a69f4fced1006c71ba633ac2128700f2c7128
[INFO] checking ASPDragon/Learning_Rust against master#3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0 for pr-143164
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FASPDragon%2FLearning_Rust" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ASPDragon/Learning_Rust
[INFO] finished tweaking git repo https://github.com/ASPDragon/Learning_Rust
[INFO] tweaked toml for git repo https://github.com/ASPDragon/Learning_Rust written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ASPDragon/Learning_Rust 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/ASPDragon/Learning_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" "+3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 42c82b5865bb17adc98c55957a8bbe4ffb25478720c18b9bb45ea981aabe09d4
[INFO] running `Command { std: "docker" "start" "-a" "42c82b5865bb17adc98c55957a8bbe4ffb25478720c18b9bb45ea981aabe09d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "42c82b5865bb17adc98c55957a8bbe4ffb25478720c18b9bb45ea981aabe09d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42c82b5865bb17adc98c55957a8bbe4ffb25478720c18b9bb45ea981aabe09d4", kill_on_drop: false }`
[INFO] [stdout] 42c82b5865bb17adc98c55957a8bbe4ffb25478720c18b9bb45ea981aabe09d4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 692fac73f7b78158067ac9f404be3d781a70295ba4e1e774ac7f1b7da82b184c
[INFO] running `Command { std: "docker" "start" "-a" "692fac73f7b78158067ac9f404be3d781a70295ba4e1e774ac7f1b7da82b184c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.155
[INFO] [stderr]    Compiling zerocopy v0.8.0-alpha.6
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking rand_core v0.9.0-alpha.1
[INFO] [stderr]     Checking rand_chacha v0.9.0-alpha.1
[INFO] [stderr]     Checking rand v0.9.0-alpha.1
[INFO] [stderr]     Checking Learning_Rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::structs_enums::structEnums::Coin`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::structs_enums::structEnums::Coin;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::structs_enums::structEnums::UsState`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::structs_enums::structEnums::UsState;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::structs_enums::structEnums`
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use crate::structs_enums::structEnums;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::structs_enums::structEnums::Coin`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::structs_enums::structEnums::Coin;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::structs_enums::structEnums::UsState`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::structs_enums::structEnums::UsState;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::structs_enums::structEnums`
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use crate::structs_enums::structEnums;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vowels`
[INFO] [stdout]   --> src/main.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |     let vowels = [ 'a', 'e', 'i', 'o', 'u' ];
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_vowels`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `word`
[INFO] [stdout]   --> src/main.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |     for word in str.split_whitespace() {
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_word`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let mut str = String::from("Hello, Rust! I am doing some exercises!");
[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: function `guessing_game` is never used
[INFO] [stdout]  --> src/guessing_game.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn guessing_game() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Rectangle` is never constructed
[INFO] [stdout]  --> src/structs_enums.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 |     struct Rectangle {
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `square`, `area`, and `can_fit` are never used
[INFO] [stdout]   --> src/structs_enums.rs:9:12
[INFO] [stdout]    |
[INFO] [stdout] 8  |     impl Rectangle {
[INFO] [stdout]    |     -------------- associated items in this implementation
[INFO] [stdout] 9  |         fn square(dimension: u32) -> Self {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 16 |         fn area(&self) -> u32 {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 |         fn can_fit(&self, rhs: &Rectangle) -> bool {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Message` is never used
[INFO] [stdout]   --> src/structs_enums.rs:26:10
[INFO] [stdout]    |
[INFO] [stdout] 26 |     enum Message {
[INFO] [stdout]    |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `call` is never used
[INFO] [stdout]   --> src/structs_enums.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 33 |     impl Message {
[INFO] [stdout]    |     ------------ method in this implementation
[INFO] [stdout] 34 |         fn call(&self) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `UsState` is never used
[INFO] [stdout]   --> src/structs_enums.rs:40:14
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub enum UsState {
[INFO] [stdout]    |              ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Coin` is never used
[INFO] [stdout]   --> src/structs_enums.rs:93:14
[INFO] [stdout]    |
[INFO] [stdout] 93 |     pub enum Coin {
[INFO] [stdout]    |              ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `value_in_cents` is never used
[INFO] [stdout]    --> src/structs_enums.rs:100:12
[INFO] [stdout]     |
[INFO] [stdout] 100 |     pub fn value_in_cents(coin: Coin) -> u8 {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `count_coins_number` is never used
[INFO] [stdout]    --> src/structs_enums.rs:112:8
[INFO] [stdout]     |
[INFO] [stdout] 112 |     fn count_coins_number(coin: Coin) -> u8 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `plus_one` is never used
[INFO] [stdout]    --> src/structs_enums.rs:128:12
[INFO] [stdout]     |
[INFO] [stdout] 128 |     pub fn plus_one(x: Option<i32>) -> Option<i32> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `structEnums` should have a snake case name
[INFO] [stdout]  --> src/structs_enums.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub(crate) mod structEnums {
[INFO] [stdout]   |                ^^^^^^^^^^^ help: convert the identifier to snake case: `struct_enums`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vowels`
[INFO] [stdout]   --> src/main.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |     let vowels = [ 'a', 'e', 'i', 'o', 'u' ];
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_vowels`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `word`
[INFO] [stdout]   --> src/main.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |     for word in str.split_whitespace() {
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_word`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let mut str = String::from("Hello, Rust! I am doing some exercises!");
[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: function `guessing_game` is never used
[INFO] [stdout]  --> src/guessing_game.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn guessing_game() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Rectangle` is never constructed
[INFO] [stdout]  --> src/structs_enums.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 |     struct Rectangle {
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `square`, `area`, and `can_fit` are never used
[INFO] [stdout]   --> src/structs_enums.rs:9:12
[INFO] [stdout]    |
[INFO] [stdout] 8  |     impl Rectangle {
[INFO] [stdout]    |     -------------- associated items in this implementation
[INFO] [stdout] 9  |         fn square(dimension: u32) -> Self {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 16 |         fn area(&self) -> u32 {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 |         fn can_fit(&self, rhs: &Rectangle) -> bool {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Message` is never used
[INFO] [stdout]   --> src/structs_enums.rs:26:10
[INFO] [stdout]    |
[INFO] [stdout] 26 |     enum Message {
[INFO] [stdout]    |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `call` is never used
[INFO] [stdout]   --> src/structs_enums.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 33 |     impl Message {
[INFO] [stdout]    |     ------------ method in this implementation
[INFO] [stdout] 34 |         fn call(&self) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `UsState` is never used
[INFO] [stdout]   --> src/structs_enums.rs:40:14
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub enum UsState {
[INFO] [stdout]    |              ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Coin` is never used
[INFO] [stdout]   --> src/structs_enums.rs:93:14
[INFO] [stdout]    |
[INFO] [stdout] 93 |     pub enum Coin {
[INFO] [stdout]    |              ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `value_in_cents` is never used
[INFO] [stdout]    --> src/structs_enums.rs:100:12
[INFO] [stdout]     |
[INFO] [stdout] 100 |     pub fn value_in_cents(coin: Coin) -> u8 {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `count_coins_number` is never used
[INFO] [stdout]    --> src/structs_enums.rs:112:8
[INFO] [stdout]     |
[INFO] [stdout] 112 |     fn count_coins_number(coin: Coin) -> u8 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `plus_one` is never used
[INFO] [stdout]    --> src/structs_enums.rs:128:12
[INFO] [stdout]     |
[INFO] [stdout] 128 |     pub fn plus_one(x: Option<i32>) -> Option<i32> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `structEnums` should have a snake case name
[INFO] [stdout]  --> src/structs_enums.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub(crate) mod structEnums {
[INFO] [stdout]   |                ^^^^^^^^^^^ help: convert the identifier to snake case: `struct_enums`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.71s
[INFO] running `Command { std: "docker" "inspect" "692fac73f7b78158067ac9f404be3d781a70295ba4e1e774ac7f1b7da82b184c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "692fac73f7b78158067ac9f404be3d781a70295ba4e1e774ac7f1b7da82b184c", kill_on_drop: false }`
[INFO] [stdout] 692fac73f7b78158067ac9f404be3d781a70295ba4e1e774ac7f1b7da82b184c
