[INFO] cloning repository https://github.com/GBujak/bfplan
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/GBujak/bfplan" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGBujak%2Fbfplan", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGBujak%2Fbfplan'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ca8687e757bc4396c4f724e7b37f8de3dbb302ce
[INFO] checking GBujak/bfplan against try#b20a093d9fb1ffaa04ae9852cb034864a992bafd for pr-85073
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGBujak%2Fbfplan" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/GBujak/bfplan on toolchain b20a093d9fb1ffaa04ae9852cb034864a992bafd
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/GBujak/bfplan
[INFO] finished tweaking git repo https://github.com/GBujak/bfplan
[INFO] tweaked toml for git repo https://github.com/GBujak/bfplan written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/GBujak/bfplan already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0ef61edee6f8b64c8450a1d061cf0c2e09093055f1087f46c300c7373ce2d90b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0ef61edee6f8b64c8450a1d061cf0c2e09093055f1087f46c300c7373ce2d90b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0ef61edee6f8b64c8450a1d061cf0c2e09093055f1087f46c300c7373ce2d90b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ef61edee6f8b64c8450a1d061cf0c2e09093055f1087f46c300c7373ce2d90b", kill_on_drop: false }`
[INFO] [stdout] 0ef61edee6f8b64c8450a1d061cf0c2e09093055f1087f46c300c7373ce2d90b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 05adedb3259cebe468f7f518461bfce0dc66c1614ea96c4c18f35026e8bf61d7
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "05adedb3259cebe468f7f518461bfce0dc66c1614ea96c4c18f35026e8bf61d7", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling serde_derive v1.0.124
[INFO] [stderr]    Compiling serde v1.0.124
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling syn v1.0.64
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking serde_json v1.0.64
[INFO] [stderr]     Checking bfplan v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Subject`
[INFO] [stdout]  --> src/annealing/adapter.rs:3:63
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::{data_types::{Classroom, SimpleDate, StudentGroup, Subject, Teacher}, input::PlanInput, output::{LessonOwned, PlanOutput}};
[INFO] [stdout]   |                                                               ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `illegal_buffer::IllegalBuffer`
[INFO] [stdout]  --> src/annealing/annealing_buffer.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     illegal_buffer::IllegalBuffer,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `fmt::Pointer`, `mem::swap`
[INFO] [stdout]   --> src/annealing/annealing_buffer.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout] 9  |     fmt::Pointer,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 10 |     mem::swap,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Subject`
[INFO] [stdout]  --> src/annealing/adapter.rs:3:63
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::{data_types::{Classroom, SimpleDate, StudentGroup, Subject, Teacher}, input::PlanInput, output::{LessonOwned, PlanOutput}};
[INFO] [stdout]   |                                                               ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `illegal_buffer::IllegalBuffer`
[INFO] [stdout]  --> src/annealing/annealing_buffer.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     illegal_buffer::IllegalBuffer,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `illegal_buffer::IllegalBuffer`
[INFO] [stdout]  --> src/annealing/mutation.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     illegal_buffer::IllegalBuffer,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `fmt::Pointer`, `mem::swap`
[INFO] [stdout]   --> src/annealing/annealing_buffer.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout] 9  |     fmt::Pointer,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 10 |     mem::swap,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `illegal_buffer::IllegalBuffer`
[INFO] [stdout]  --> src/annealing/mutation.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     illegal_buffer::IllegalBuffer,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashSet`
[INFO] [stdout]  --> src/data_types/lesson.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashSet;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashSet`
[INFO] [stdout]  --> src/data_types/simple_date.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashSet;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashSet`
[INFO] [stdout]  --> src/data_types/lesson.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashSet;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashSet`
[INFO] [stdout]  --> src/data_types/simple_date.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashSet;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `itertools::peek_nth`
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use itertools::peek_nth;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `itertools::Itertools`
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use itertools::Itertools;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `itertools::peek_nth`
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use itertools::peek_nth;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `itertools::Itertools`
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use itertools::Itertools;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `io::Read`
[INFO] [stdout]  --> src/main.rs:1:21
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{fs::File, io::Read};
[INFO] [stdout]   |                     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `other`
[INFO] [stdout]    --> src/annealing/annealing_buffer.rs:342:39
[INFO] [stdout]     |
[INFO] [stdout] 342 | ...   Collision(other) => {} // unreachable!("Collision of {:?} should be with lesson {:?} but got different lesson: {:?}", swap_with, le...
[INFO] [stdout]     |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_other`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `debug_message`
[INFO] [stdout]    --> src/annealing/annealing_buffer.rs:403:44
[INFO] [stdout]     |
[INFO] [stdout] 403 |     pub fn assert_maps_synchronized(&self, debug_message: &str) {
[INFO] [stdout]     |                                            ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_debug_message`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `io::Read`
[INFO] [stdout]  --> src/main.rs:1:21
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{fs::File, io::Read};
[INFO] [stdout]   |                     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `other`
[INFO] [stdout]    --> src/annealing/annealing_buffer.rs:342:39
[INFO] [stdout]     |
[INFO] [stdout] 342 | ...   Collision(other) => {} // unreachable!("Collision of {:?} should be with lesson {:?} but got different lesson: {:?}", swap_with, le...
[INFO] [stdout]     |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_other`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `debug_message`
[INFO] [stdout]    --> src/annealing/annealing_buffer.rs:403:44
[INFO] [stdout]     |
[INFO] [stdout] 403 |     pub fn assert_maps_synchronized(&self, debug_message: &str) {
[INFO] [stdout]     |                                            ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_debug_message`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `remove_from_maps`
[INFO] [stdout]    --> src/annealing/annealing_buffer.rs:152:8
[INFO] [stdout]     |
[INFO] [stdout] 152 |     fn remove_from_maps(&mut self, lesson: Lesson) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert_into_maps`
[INFO] [stdout]    --> src/annealing/annealing_buffer.rs:165:8
[INFO] [stdout]     |
[INFO] [stdout] 165 |     fn insert_into_maps(&mut self, lesson: Lesson, lesson_id: u8) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `temperature`
[INFO] [stdout]   --> src/annealing/annealing_state.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn temperature(&self) -> f32 {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `IllegalBuffer`
[INFO] [stdout]   --> src/annealing/illegal_buffer.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct IllegalBuffer {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/annealing/illegal_buffer.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn new(can_teach: HashSet<CanTeach>, can_hold: HashSet<CanHold>) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `can_teach`
[INFO] [stdout]   --> src/annealing/illegal_buffer.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn can_teach(&self, can_teach: CanTeach) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `can_hold`
[INFO] [stdout]   --> src/annealing/illegal_buffer.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn can_hold(&self, can_hold: CanHold) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert_can_teach`
[INFO] [stdout]   --> src/annealing/illegal_buffer.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 36 |     pub fn insert_can_teach(&mut self, can_teach: CanTeach) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert_can_hold`
[INFO] [stdout]   --> src/annealing/illegal_buffer.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub fn insert_can_hold(&mut self, can_hold: CanHold) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/annealing/mutation.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 36 |     pub fn new(target_lesson: u8, mutation_type: MutationType) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/data_types/lesson.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn new(
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `cartesian_product_iter`
[INFO] [stdout]   --> src/data_types/lesson.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn cartesian_product_iter(&self) -> impl Iterator<Item = Lesson> + Clone {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/data_types/simple_date.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 37 |     pub fn new(/*illegal_dates: HashSet<SimpleDate>, */ days: u8) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/data_types/subject.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn new(name: String, subject_type: SubjectType, count: i8) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/data_types/teacher.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub fn new(name: String, can_teach: Vec<String>) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_logic_error`
[INFO] [stdout]   --> src/illegal_state.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 27 |     pub fn is_logic_error(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/input.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn new(
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `find_subject`
[INFO] [stdout]   --> src/input.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub fn find_subject(&self, name: &str) -> Option<&Subject> {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `possible_lessons`
[INFO] [stdout]   --> src/input.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub fn possible_lessons(&self) -> Option<Vec<LessonPossible>> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `remove_from_maps`
[INFO] [stdout]    --> src/annealing/annealing_buffer.rs:152:8
[INFO] [stdout]     |
[INFO] [stdout] 152 |     fn remove_from_maps(&mut self, lesson: Lesson) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert_into_maps`
[INFO] [stdout]    --> src/annealing/annealing_buffer.rs:165:8
[INFO] [stdout]     |
[INFO] [stdout] 165 |     fn insert_into_maps(&mut self, lesson: Lesson, lesson_id: u8) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `temperature`
[INFO] [stdout]   --> src/annealing/annealing_state.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn temperature(&self) -> f32 {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `IllegalBuffer`
[INFO] [stdout]   --> src/annealing/illegal_buffer.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct IllegalBuffer {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/annealing/illegal_buffer.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn new(can_teach: HashSet<CanTeach>, can_hold: HashSet<CanHold>) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `can_teach`
[INFO] [stdout]   --> src/annealing/illegal_buffer.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn can_teach(&self, can_teach: CanTeach) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `can_hold`
[INFO] [stdout]   --> src/annealing/illegal_buffer.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn can_hold(&self, can_hold: CanHold) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert_can_teach`
[INFO] [stdout]   --> src/annealing/illegal_buffer.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 36 |     pub fn insert_can_teach(&mut self, can_teach: CanTeach) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert_can_hold`
[INFO] [stdout]   --> src/annealing/illegal_buffer.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub fn insert_can_hold(&mut self, can_hold: CanHold) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/data_types/lesson.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn new(
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `cartesian_product_iter`
[INFO] [stdout]   --> src/data_types/lesson.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn cartesian_product_iter(&self) -> impl Iterator<Item = Lesson> + Clone {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/data_types/simple_date.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 37 |     pub fn new(/*illegal_dates: HashSet<SimpleDate>, */ days: u8) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/data_types/subject.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn new(name: String, subject_type: SubjectType, count: i8) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/data_types/teacher.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub fn new(name: String, can_teach: Vec<String>) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_logic_error`
[INFO] [stdout]   --> src/illegal_state.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 27 |     pub fn is_logic_error(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/input.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn new(
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `find_subject`
[INFO] [stdout]   --> src/input.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub fn find_subject(&self, name: &str) -> Option<&Subject> {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `possible_lessons`
[INFO] [stdout]   --> src/input.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub fn possible_lessons(&self) -> Option<Vec<LessonPossible>> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 30 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 29 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.00s
[INFO] running `Command { std: "docker" "inspect" "05adedb3259cebe468f7f518461bfce0dc66c1614ea96c4c18f35026e8bf61d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05adedb3259cebe468f7f518461bfce0dc66c1614ea96c4c18f35026e8bf61d7", kill_on_drop: false }`
[INFO] [stdout] 05adedb3259cebe468f7f518461bfce0dc66c1614ea96c4c18f35026e8bf61d7