[INFO] cloning repository https://github.com/VnomArrow/hashcode_demo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/VnomArrow/hashcode_demo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVnomArrow%2Fhashcode_demo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVnomArrow%2Fhashcode_demo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 84aa1fc92d38fa2bc6337c074b52d8ca463f0b48
[INFO] checking VnomArrow/hashcode_demo against master#bca37a20bd376ce3fd138e7cdee7fe704e0f8814 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVnomArrow%2Fhashcode_demo" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/VnomArrow/hashcode_demo
[INFO] finished tweaking git repo https://github.com/VnomArrow/hashcode_demo
[INFO] tweaked toml for git repo https://github.com/VnomArrow/hashcode_demo written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/VnomArrow/hashcode_demo on toolchain bca37a20bd376ce3fd138e7cdee7fe704e0f8814
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/VnomArrow/hashcode_demo 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" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 211a696f115b06490988344f3155387f6469a9cc83f60da41b13ef75db379939
[INFO] running `Command { std: "docker" "start" "-a" "211a696f115b06490988344f3155387f6469a9cc83f60da41b13ef75db379939", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "211a696f115b06490988344f3155387f6469a9cc83f60da41b13ef75db379939", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "211a696f115b06490988344f3155387f6469a9cc83f60da41b13ef75db379939", kill_on_drop: false }`
[INFO] [stdout] 211a696f115b06490988344f3155387f6469a9cc83f60da41b13ef75db379939
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9ab7a3d17b097c52ff21f0b3419faa6c1f23fec8460ad9cbc1c1326ca2ec669a
[INFO] running `Command { std: "docker" "start" "-a" "9ab7a3d17b097c52ff21f0b3419faa6c1f23fec8460ad9cbc1c1326ca2ec669a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.117
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]     Checking crossbeam-epoch v0.9.7
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking getrandom v0.2.4
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking rayon-core v1.9.1
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking hashcode_demo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `IntoParallelIterator` and `ParallelIterator`
[INFO] [stdout]  --> src/main.rs:4:19
[INFO] [stdout]   |
[INFO] [stdout] 4 | use rayon::iter::{IntoParallelIterator, ParallelIterator};
[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 import: `crate::util::*`
[INFO] [stdout]  --> src/optimizer.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::util::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]  --> src/preferences.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fs::File;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::util::*`
[INFO] [stdout]  --> src/preferences.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::util::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::util::*`
[INFO] [stdout]  --> src/algorithms.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::util::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `IntoParallelIterator` and `ParallelIterator`
[INFO] [stdout]  --> src/main.rs:4:19
[INFO] [stdout]   |
[INFO] [stdout] 4 | use rayon::iter::{IntoParallelIterator, ParallelIterator};
[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 import: `crate::util::*`
[INFO] [stdout]  --> src/optimizer.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::util::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]  --> src/preferences.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fs::File;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::util::*`
[INFO] [stdout]  --> src/preferences.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::util::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::util::*`
[INFO] [stdout]  --> src/algorithms.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::util::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::Rng`
[INFO] [stdout]  --> src/optimizer.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use rand::Rng;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/optimizer.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |     for i in 0..iter_count {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/optimizer.rs:156:9
[INFO] [stdout]     |
[INFO] [stdout] 156 |     let mut pizza = pizza_maker.random_pizza(preference_info.ingrediants.len());
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/optimizer.rs:169:9
[INFO] [stdout]     |
[INFO] [stdout] 169 |     let mut pizza = pizza_maker.random_pizza(preference_info.ingrediants.len());
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `subset_preferences`
[INFO] [stdout]    --> src/preferences.rs:142:54
[INFO] [stdout]     |
[INFO] [stdout] 142 | ... &Vec<usize>, subset_preferences: &PizzaPreferenceInfo, origional_preferences: &PizzaPreferenceInfo, pizza: &Pizza) -> Pizza {
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_subset_preferences`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_occurences` is never used
[INFO] [stdout]  --> src/optimizer.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn print_occurences(problem_name: &str) {
[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 `find_by_random` is never used
[INFO] [stdout]    --> src/optimizer.rs:123:8
[INFO] [stdout]     |
[INFO] [stdout] 123 | pub fn find_by_random(problem_name: &str) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_by_walking` is never used
[INFO] [stdout]    --> src/optimizer.rs:150:8
[INFO] [stdout]     |
[INFO] [stdout] 150 | pub fn find_by_walking(problem_name: &str) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_by_walking_v2` is never used
[INFO] [stdout]    --> src/optimizer.rs:163:8
[INFO] [stdout]     |
[INFO] [stdout] 163 | pub fn find_by_walking_v2(problem_name: &str) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `random_pizza_from_subset` is never used
[INFO] [stdout]    --> src/optimizer.rs:194:12
[INFO] [stdout]     |
[INFO] [stdout] 179 | impl PizzaMaker {
[INFO] [stdout]     | --------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 194 |     pub fn random_pizza_from_subset(&mut self, subset: &Vec<usize>, old_pizza: &Pizza, ingrediant_count: usize) -> Pizza {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `create_from_vec` is never used
[INFO] [stdout]    --> src/optimizer.rs:208:12
[INFO] [stdout]     |
[INFO] [stdout] 207 | impl Pizza {
[INFO] [stdout]     | ---------- associated function in this implementation
[INFO] [stdout] 208 |     pub fn create_from_vec(ingrediant_count: usize, pizza: &Vec<usize>) -> Self {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `pizza_person_count_ignored` is never used
[INFO] [stdout]    --> src/optimizer.rs:308:12
[INFO] [stdout]     |
[INFO] [stdout] 258 | impl CustomerCounter {
[INFO] [stdout]     | -------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 308 |     pub fn pizza_person_count_ignored(&self, pizza: &Pizza, people_count: usize, ignored_ingrediants: &Pizza) -> usize {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `remake_pizza_from_subset` is never used
[INFO] [stdout]    --> src/preferences.rs:142:8
[INFO] [stdout]     |
[INFO] [stdout] 142 | pub fn remake_pizza_from_subset(subset: &Vec<usize>, subset_preferences: &PizzaPreferenceInfo, origional_preferences: &PizzaPrefere...
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `walk_steep` is never used
[INFO] [stdout]  --> src/algorithms.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn walk_steep(preference_info: &PizzaPreferenceInfo, pizza_in: &Pizza) -> Pizza {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::Rng`
[INFO] [stdout]  --> src/optimizer.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use rand::Rng;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/optimizer.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |     for i in 0..iter_count {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/optimizer.rs:156:9
[INFO] [stdout]     |
[INFO] [stdout] 156 |     let mut pizza = pizza_maker.random_pizza(preference_info.ingrediants.len());
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/optimizer.rs:169:9
[INFO] [stdout]     |
[INFO] [stdout] 169 |     let mut pizza = pizza_maker.random_pizza(preference_info.ingrediants.len());
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `subset_preferences`
[INFO] [stdout]    --> src/preferences.rs:142:54
[INFO] [stdout]     |
[INFO] [stdout] 142 | ... &Vec<usize>, subset_preferences: &PizzaPreferenceInfo, origional_preferences: &PizzaPreferenceInfo, pizza: &Pizza) -> Pizza {
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_subset_preferences`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_occurences` is never used
[INFO] [stdout]  --> src/optimizer.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn print_occurences(problem_name: &str) {
[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 `find_by_random` is never used
[INFO] [stdout]    --> src/optimizer.rs:123:8
[INFO] [stdout]     |
[INFO] [stdout] 123 | pub fn find_by_random(problem_name: &str) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_by_walking` is never used
[INFO] [stdout]    --> src/optimizer.rs:150:8
[INFO] [stdout]     |
[INFO] [stdout] 150 | pub fn find_by_walking(problem_name: &str) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_by_walking_v2` is never used
[INFO] [stdout]    --> src/optimizer.rs:163:8
[INFO] [stdout]     |
[INFO] [stdout] 163 | pub fn find_by_walking_v2(problem_name: &str) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `random_pizza_from_subset` is never used
[INFO] [stdout]    --> src/optimizer.rs:194:12
[INFO] [stdout]     |
[INFO] [stdout] 179 | impl PizzaMaker {
[INFO] [stdout]     | --------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 194 |     pub fn random_pizza_from_subset(&mut self, subset: &Vec<usize>, old_pizza: &Pizza, ingrediant_count: usize) -> Pizza {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `create_from_vec` is never used
[INFO] [stdout]    --> src/optimizer.rs:208:12
[INFO] [stdout]     |
[INFO] [stdout] 207 | impl Pizza {
[INFO] [stdout]     | ---------- associated function in this implementation
[INFO] [stdout] 208 |     pub fn create_from_vec(ingrediant_count: usize, pizza: &Vec<usize>) -> Self {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `pizza_person_count_ignored` is never used
[INFO] [stdout]    --> src/optimizer.rs:308:12
[INFO] [stdout]     |
[INFO] [stdout] 258 | impl CustomerCounter {
[INFO] [stdout]     | -------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 308 |     pub fn pizza_person_count_ignored(&self, pizza: &Pizza, people_count: usize, ignored_ingrediants: &Pizza) -> usize {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `remake_pizza_from_subset` is never used
[INFO] [stdout]    --> src/preferences.rs:142:8
[INFO] [stdout]     |
[INFO] [stdout] 142 | pub fn remake_pizza_from_subset(subset: &Vec<usize>, subset_preferences: &PizzaPreferenceInfo, origional_preferences: &PizzaPrefere...
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `walk_steep` is never used
[INFO] [stdout]  --> src/algorithms.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn walk_steep(preference_info: &PizzaPreferenceInfo, pizza_in: &Pizza) -> Pizza {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.90s
[INFO] running `Command { std: "docker" "inspect" "9ab7a3d17b097c52ff21f0b3419faa6c1f23fec8460ad9cbc1c1326ca2ec669a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ab7a3d17b097c52ff21f0b3419faa6c1f23fec8460ad9cbc1c1326ca2ec669a", kill_on_drop: false }`
[INFO] [stdout] 9ab7a3d17b097c52ff21f0b3419faa6c1f23fec8460ad9cbc1c1326ca2ec669a