[INFO] cloning repository https://github.com/ChoateProgrammingUnion/housing-lottery-optimization
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ChoateProgrammingUnion/housing-lottery-optimization" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChoateProgrammingUnion%2Fhousing-lottery-optimization", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChoateProgrammingUnion%2Fhousing-lottery-optimization'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4e3b3713c4716b2f45729f4cea907a1a14ebfba8
[INFO] testing ChoateProgrammingUnion/housing-lottery-optimization against beta-2020-10-09 for beta-1.48-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChoateProgrammingUnion%2Fhousing-lottery-optimization" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ChoateProgrammingUnion/housing-lottery-optimization on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ChoateProgrammingUnion/housing-lottery-optimization
[INFO] finished tweaking git repo https://github.com/ChoateProgrammingUnion/housing-lottery-optimization
[INFO] tweaked toml for git repo https://github.com/ChoateProgrammingUnion/housing-lottery-optimization written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/ChoateProgrammingUnion/housing-lottery-optimization already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e4698fe63b102557d9349609c4052b69dd7aaecbf392124c18e64ebbe4d20279
[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" "e4698fe63b102557d9349609c4052b69dd7aaecbf392124c18e64ebbe4d20279", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e4698fe63b102557d9349609c4052b69dd7aaecbf392124c18e64ebbe4d20279", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4698fe63b102557d9349609c4052b69dd7aaecbf392124c18e64ebbe4d20279", kill_on_drop: false }`
[INFO] [stdout] e4698fe63b102557d9349609c4052b69dd7aaecbf392124c18e64ebbe4d20279
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=warn" "-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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8ee5712c5bd8e0bee96e50ba911affffba83505656fb93d7509a9e2af23771f9
[INFO] running `Command { std: "docker" "start" "-a" "8ee5712c5bd8e0bee96e50ba911affffba83505656fb93d7509a9e2af23771f9", kill_on_drop: false }`
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling housing-optimization v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `optimizers::rand::SeedableRng`
[INFO] [stdout]  --> src/optimizers/deans_algorithm.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use optimizers::rand::SeedableRng;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `optimizers::rand::seq::IteratorRandom`
[INFO] [stdout]  --> src/optimizers/deans_algorithm.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use optimizers::rand::seq::IteratorRandom;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data_file`
[INFO] [stdout]   --> src/data_output.rs:11:13
[INFO] [stdout]    |
[INFO] [stdout] 11 |         let mut data_file = File::create("data_output.yaml").expect("file creation failed");
[INFO] [stdout]    |             ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_data_file`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rounds`
[INFO] [stdout]   --> src/optimizers/identity.rs:20:28
[INFO] [stdout]    |
[INFO] [stdout] 20 |     fn optimize(&mut self, rounds: usize) -> Vec<Vec<Student>> {
[INFO] [stdout]    |                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_rounds`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `student`
[INFO] [stdout]   --> src/optimizers/mcmc.rs:58:14
[INFO] [stdout]    |
[INFO] [stdout] 58 | fn normalize(student: Student) -> Student {
[INFO] [stdout]    |              ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_student`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `student`
[INFO] [stdout]   --> src/optimizers/mcmc/mcmc_naive.rs:49:17
[INFO] [stdout]    |
[INFO] [stdout] 49 |             for student in house {
[INFO] [stdout]    |                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_student`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `round`
[INFO] [stdout]   --> src/optimizers/mcmc/mcmc_naive.rs:76:13
[INFO] [stdout]    |
[INFO] [stdout] 76 |         for round in 0..(rounds*1000){
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_round`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/optimizers/deans_algorithm.rs:53:13
[INFO] [stdout]    |
[INFO] [stdout] 53 |         for i in 0..input.len() {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rounds`
[INFO] [stdout]   --> src/optimizers/deans_algorithm.rs:46:28
[INFO] [stdout]    |
[INFO] [stdout] 46 |     fn optimize(&mut self, rounds: usize) -> Vec<Vec<Student>> {
[INFO] [stdout]    |                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_rounds`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item`
[INFO] [stdout]   --> src/optimizers/multi_dist.rs:41:14
[INFO] [stdout]    |
[INFO] [stdout] 41 |             |item, weight, index| {
[INFO] [stdout]    |              ^^^^ help: if this is intentional, prefix it with an underscore: `_item`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]   --> src/optimizers/multi_dist.rs:50:20
[INFO] [stdout]    |
[INFO] [stdout] 50 |             |item, index| {
[INFO] [stdout]    |                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]   --> src/optimizers/multi_dist.rs:53:28
[INFO] [stdout]    |
[INFO] [stdout] 53 |             |item, weight, index| {
[INFO] [stdout]    |                            ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item`
[INFO] [stdout]   --> src/optimizers/multi_dist.rs:65:34
[INFO] [stdout]    |
[INFO] [stdout] 65 |         let move_house_weight = |item: &Vec<Student>, index: usize| -> f64 {
[INFO] [stdout]    |                                  ^^^^ help: if this is intentional, prefix it with an underscore: `_item`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item`
[INFO] [stdout]   --> src/optimizers/multi_dist.rs:72:14
[INFO] [stdout]    |
[INFO] [stdout] 72 |             |item, weight, index| {
[INFO] [stdout]    |              ^^^^ help: if this is intentional, prefix it with an underscore: `_item`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]   --> src/optimizers/multi_dist.rs:78:52
[INFO] [stdout]    |
[INFO] [stdout] 78 |         let move_student_weight = |item: &Student, index: usize| -> f64 {
[INFO] [stdout]    |                                                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]   --> src/optimizers/multi_dist.rs:84:28
[INFO] [stdout]    |
[INFO] [stdout] 84 |             |item, weight, index| {
[INFO] [stdout]    |                            ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:49:13
[INFO] [stdout]    |
[INFO] [stdout] 49 |         let mut rounds: usize = 1*num.pow(x as u32);
[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: variable does not need to be mutable
[INFO] [stdout]   --> src/data_output.rs:11:13
[INFO] [stdout]    |
[INFO] [stdout] 11 |         let mut data_file = File::create("data_output.yaml").expect("file creation failed");
[INFO] [stdout]    |             ----^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/optimizers/mcmc.rs:50:17
[INFO] [stdout]    |
[INFO] [stdout] 50 |             let mut student = schedule[proposed_change.student_location.0].remove(proposed_change.student_location.1);
[INFO] [stdout]    |                 ----^^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/optimizers/mcmc/mcmc_naive.rs:40:13
[INFO] [stdout]    |
[INFO] [stdout] 40 |         let mut student_location = self.gen_range(0, size);
[INFO] [stdout]    |             ----^^^^^^^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/optimizers/multi_dist.rs:102:13
[INFO] [stdout]     |
[INFO] [stdout] 102 |         let mut dist = WeightedIndex::new(&weights).unwrap();
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `scale`
[INFO] [stdout]   --> src/ballot.rs:51:8
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub fn scale(student: Student) -> Student {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `identity`
[INFO] [stdout]   --> src/ballot.rs:83:8
[INFO] [stdout]    |
[INFO] [stdout] 83 | pub fn identity(student: Student) -> Student {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/optimizers/identity.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn new(ballots: &Ballot) -> Identity {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `size`
[INFO] [stdout]   --> src/optimizers/mcmc/mcmc_naive.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn size(&self , schedule: Vec<Vec<Student>>) -> (Vec<Vec<Student>>, usize) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/optimizers/mcmc.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn new(student_location: (usize, usize), proposed_house: usize) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `normalize`
[INFO] [stdout]   --> src/optimizers/mcmc.rs:58:4
[INFO] [stdout]    |
[INFO] [stdout] 58 | fn normalize(student: Student) -> Student {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/optimizers/deans_algorithm.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn new(ballots: Ballot) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/optimizers/multi_dist.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn new(ballots: &Ballot, random_seed: u64, weight_power: f64) -> MultiDist {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `student_weight`
[INFO] [stdout]    --> src/optimizers/multi_dist.rs:111:8
[INFO] [stdout]     |
[INFO] [stdout] 111 |     fn student_weight(student: &Student, house_id: usize) -> f64 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Number` should have a snake case name
[INFO] [stdout]  --> src/data_output.rs:8:98
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn write_output(allocations: &Vec<Vec<Student>>, ballot: &Ballot, optimized_time: &Duration, Number: &str) {
[INFO] [stdout]   |                                                                                                  ^^^^^^ help: convert the identifier to snake case: `number`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 31 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.54s
[INFO] running `Command { std: "docker" "inspect" "8ee5712c5bd8e0bee96e50ba911affffba83505656fb93d7509a9e2af23771f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ee5712c5bd8e0bee96e50ba911affffba83505656fb93d7509a9e2af23771f9", kill_on_drop: false }`
[INFO] [stdout] 8ee5712c5bd8e0bee96e50ba911affffba83505656fb93d7509a9e2af23771f9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=warn" "-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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7ce8a61b8cd335d713820758e7cc114336459acc64d395be34c678579488a9df
[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" "7ce8a61b8cd335d713820758e7cc114336459acc64d395be34c678579488a9df", kill_on_drop: false }`
[INFO] [stderr]    Compiling housing-optimization v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `optimizers::rand::SeedableRng`
[INFO] [stdout]  --> src/optimizers/deans_algorithm.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use optimizers::rand::SeedableRng;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `optimizers::rand::seq::IteratorRandom`
[INFO] [stdout]  --> src/optimizers/deans_algorithm.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use optimizers::rand::seq::IteratorRandom;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data_file`
[INFO] [stdout]   --> src/data_output.rs:11:13
[INFO] [stdout]    |
[INFO] [stdout] 11 |         let mut data_file = File::create("data_output.yaml").expect("file creation failed");
[INFO] [stdout]    |             ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_data_file`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rounds`
[INFO] [stdout]   --> src/optimizers/identity.rs:20:28
[INFO] [stdout]    |
[INFO] [stdout] 20 |     fn optimize(&mut self, rounds: usize) -> Vec<Vec<Student>> {
[INFO] [stdout]    |                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_rounds`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `student`
[INFO] [stdout]   --> src/optimizers/mcmc.rs:58:14
[INFO] [stdout]    |
[INFO] [stdout] 58 | fn normalize(student: Student) -> Student {
[INFO] [stdout]    |              ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_student`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `student`
[INFO] [stdout]   --> src/optimizers/mcmc/mcmc_naive.rs:49:17
[INFO] [stdout]    |
[INFO] [stdout] 49 |             for student in house {
[INFO] [stdout]    |                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_student`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `round`
[INFO] [stdout]   --> src/optimizers/mcmc/mcmc_naive.rs:76:13
[INFO] [stdout]    |
[INFO] [stdout] 76 |         for round in 0..(rounds*1000){
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_round`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/optimizers/deans_algorithm.rs:53:13
[INFO] [stdout]    |
[INFO] [stdout] 53 |         for i in 0..input.len() {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rounds`
[INFO] [stdout]   --> src/optimizers/deans_algorithm.rs:46:28
[INFO] [stdout]    |
[INFO] [stdout] 46 |     fn optimize(&mut self, rounds: usize) -> Vec<Vec<Student>> {
[INFO] [stdout]    |                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_rounds`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item`
[INFO] [stdout]   --> src/optimizers/multi_dist.rs:41:14
[INFO] [stdout]    |
[INFO] [stdout] 41 |             |item, weight, index| {
[INFO] [stdout]    |              ^^^^ help: if this is intentional, prefix it with an underscore: `_item`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]   --> src/optimizers/multi_dist.rs:50:20
[INFO] [stdout]    |
[INFO] [stdout] 50 |             |item, index| {
[INFO] [stdout]    |                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]   --> src/optimizers/multi_dist.rs:53:28
[INFO] [stdout]    |
[INFO] [stdout] 53 |             |item, weight, index| {
[INFO] [stdout]    |                            ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item`
[INFO] [stdout]   --> src/optimizers/multi_dist.rs:65:34
[INFO] [stdout]    |
[INFO] [stdout] 65 |         let move_house_weight = |item: &Vec<Student>, index: usize| -> f64 {
[INFO] [stdout]    |                                  ^^^^ help: if this is intentional, prefix it with an underscore: `_item`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item`
[INFO] [stdout]   --> src/optimizers/multi_dist.rs:72:14
[INFO] [stdout]    |
[INFO] [stdout] 72 |             |item, weight, index| {
[INFO] [stdout]    |              ^^^^ help: if this is intentional, prefix it with an underscore: `_item`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]   --> src/optimizers/multi_dist.rs:78:52
[INFO] [stdout]    |
[INFO] [stdout] 78 |         let move_student_weight = |item: &Student, index: usize| -> f64 {
[INFO] [stdout]    |                                                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]   --> src/optimizers/multi_dist.rs:84:28
[INFO] [stdout]    |
[INFO] [stdout] 84 |             |item, weight, index| {
[INFO] [stdout]    |                            ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:49:13
[INFO] [stdout]    |
[INFO] [stdout] 49 |         let mut rounds: usize = 1*num.pow(x as u32);
[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: variable does not need to be mutable
[INFO] [stdout]   --> src/data_output.rs:11:13
[INFO] [stdout]    |
[INFO] [stdout] 11 |         let mut data_file = File::create("data_output.yaml").expect("file creation failed");
[INFO] [stdout]    |             ----^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/optimizers/mcmc.rs:50:17
[INFO] [stdout]    |
[INFO] [stdout] 50 |             let mut student = schedule[proposed_change.student_location.0].remove(proposed_change.student_location.1);
[INFO] [stdout]    |                 ----^^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/optimizers/mcmc/mcmc_naive.rs:40:13
[INFO] [stdout]    |
[INFO] [stdout] 40 |         let mut student_location = self.gen_range(0, size);
[INFO] [stdout]    |             ----^^^^^^^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/optimizers/multi_dist.rs:102:13
[INFO] [stdout]     |
[INFO] [stdout] 102 |         let mut dist = WeightedIndex::new(&weights).unwrap();
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `scale`
[INFO] [stdout]   --> src/ballot.rs:51:8
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub fn scale(student: Student) -> Student {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `identity`
[INFO] [stdout]   --> src/ballot.rs:83:8
[INFO] [stdout]    |
[INFO] [stdout] 83 | pub fn identity(student: Student) -> Student {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/optimizers/identity.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn new(ballots: &Ballot) -> Identity {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `size`
[INFO] [stdout]   --> src/optimizers/mcmc/mcmc_naive.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn size(&self , schedule: Vec<Vec<Student>>) -> (Vec<Vec<Student>>, usize) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/optimizers/mcmc.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn new(student_location: (usize, usize), proposed_house: usize) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `normalize`
[INFO] [stdout]   --> src/optimizers/mcmc.rs:58:4
[INFO] [stdout]    |
[INFO] [stdout] 58 | fn normalize(student: Student) -> Student {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/optimizers/deans_algorithm.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn new(ballots: Ballot) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/optimizers/multi_dist.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn new(ballots: &Ballot, random_seed: u64, weight_power: f64) -> MultiDist {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `student_weight`
[INFO] [stdout]    --> src/optimizers/multi_dist.rs:111:8
[INFO] [stdout]     |
[INFO] [stdout] 111 |     fn student_weight(student: &Student, house_id: usize) -> f64 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Number` should have a snake case name
[INFO] [stdout]  --> src/data_output.rs:8:98
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn write_output(allocations: &Vec<Vec<Student>>, ballot: &Ballot, optimized_time: &Duration, Number: &str) {
[INFO] [stdout]   |                                                                                                  ^^^^^^ help: convert the identifier to snake case: `number`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 31 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.06s
[INFO] running `Command { std: "docker" "inspect" "7ce8a61b8cd335d713820758e7cc114336459acc64d395be34c678579488a9df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ce8a61b8cd335d713820758e7cc114336459acc64d395be34c678579488a9df", kill_on_drop: false }`
[INFO] [stdout] 7ce8a61b8cd335d713820758e7cc114336459acc64d395be34c678579488a9df
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=warn" "-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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 52ec09864c59654a9ff7245ef3926bf82cd55ef20cca529cacc60aa06fd588de
[INFO] running `Command { std: "docker" "start" "-a" "52ec09864c59654a9ff7245ef3926bf82cd55ef20cca529cacc60aa06fd588de", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `optimizers::rand::SeedableRng`
[INFO] [stderr]  --> src/optimizers/deans_algorithm.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use optimizers::rand::SeedableRng;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `optimizers::rand::seq::IteratorRandom`
[INFO] [stderr]  --> src/optimizers/deans_algorithm.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use optimizers::rand::seq::IteratorRandom;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `data_file`
[INFO] [stderr]   --> src/data_output.rs:11:13
[INFO] [stderr]    |
[INFO] [stderr] 11 |         let mut data_file = File::create("data_output.yaml").expect("file creation failed");
[INFO] [stderr]    |             ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_data_file`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rounds`
[INFO] [stderr]   --> src/optimizers/identity.rs:20:28
[INFO] [stderr]    |
[INFO] [stderr] 20 |     fn optimize(&mut self, rounds: usize) -> Vec<Vec<Student>> {
[INFO] [stderr]    |                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_rounds`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `student`
[INFO] [stderr]   --> src/optimizers/mcmc.rs:58:14
[INFO] [stderr]    |
[INFO] [stderr] 58 | fn normalize(student: Student) -> Student {
[INFO] [stderr]    |              ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_student`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `student`
[INFO] [stderr]   --> src/optimizers/mcmc/mcmc_naive.rs:49:17
[INFO] [stderr]    |
[INFO] [stderr] 49 |             for student in house {
[INFO] [stderr]    |                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_student`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `round`
[INFO] [stderr]   --> src/optimizers/mcmc/mcmc_naive.rs:76:13
[INFO] [stderr]    |
[INFO] [stderr] 76 |         for round in 0..(rounds*1000){
[INFO] [stderr]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_round`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/optimizers/deans_algorithm.rs:53:13
[INFO] [stderr]    |
[INFO] [stderr] 53 |         for i in 0..input.len() {
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rounds`
[INFO] [stderr]   --> src/optimizers/deans_algorithm.rs:46:28
[INFO] [stderr]    |
[INFO] [stderr] 46 |     fn optimize(&mut self, rounds: usize) -> Vec<Vec<Student>> {
[INFO] [stderr]    |                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_rounds`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `item`
[INFO] [stderr]   --> src/optimizers/multi_dist.rs:41:14
[INFO] [stderr]    |
[INFO] [stderr] 41 |             |item, weight, index| {
[INFO] [stderr]    |              ^^^^ help: if this is intentional, prefix it with an underscore: `_item`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `index`
[INFO] [stderr]   --> src/optimizers/multi_dist.rs:50:20
[INFO] [stderr]    |
[INFO] [stderr] 50 |             |item, index| {
[INFO] [stderr]    |                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `index`
[INFO] [stderr]   --> src/optimizers/multi_dist.rs:53:28
[INFO] [stderr]    |
[INFO] [stderr] 53 |             |item, weight, index| {
[INFO] [stderr]    |                            ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `item`
[INFO] [stderr]   --> src/optimizers/multi_dist.rs:65:34
[INFO] [stderr]    |
[INFO] [stderr] 65 |         let move_house_weight = |item: &Vec<Student>, index: usize| -> f64 {
[INFO] [stderr]    |                                  ^^^^ help: if this is intentional, prefix it with an underscore: `_item`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `item`
[INFO] [stderr]   --> src/optimizers/multi_dist.rs:72:14
[INFO] [stderr]    |
[INFO] [stderr] 72 |             |item, weight, index| {
[INFO] [stderr]    |              ^^^^ help: if this is intentional, prefix it with an underscore: `_item`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `index`
[INFO] [stderr]   --> src/optimizers/multi_dist.rs:78:52
[INFO] [stderr]    |
[INFO] [stderr] 78 |         let move_student_weight = |item: &Student, index: usize| -> f64 {
[INFO] [stderr]    |                                                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `index`
[INFO] [stderr]   --> src/optimizers/multi_dist.rs:84:28
[INFO] [stderr]    |
[INFO] [stderr] 84 |             |item, weight, index| {
[INFO] [stderr]    |                            ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:49:13
[INFO] [stderr]    |
[INFO] [stderr] 49 |         let mut rounds: usize = 1*num.pow(x as u32);
[INFO] [stderr]    |             ----^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/data_output.rs:11:13
[INFO] [stderr]    |
[INFO] [stderr] 11 |         let mut data_file = File::create("data_output.yaml").expect("file creation failed");
[INFO] [stderr]    |             ----^^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/optimizers/mcmc.rs:50:17
[INFO] [stderr]    |
[INFO] [stderr] 50 |             let mut student = schedule[proposed_change.student_location.0].remove(proposed_change.student_location.1);
[INFO] [stderr]    |                 ----^^^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/optimizers/mcmc/mcmc_naive.rs:40:13
[INFO] [stderr]    |
[INFO] [stderr] 40 |         let mut student_location = self.gen_range(0, size);
[INFO] [stderr]    |             ----^^^^^^^^^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/optimizers/multi_dist.rs:102:13
[INFO] [stderr]     |
[INFO] [stderr] 102 |         let mut dist = WeightedIndex::new(&weights).unwrap();
[INFO] [stderr]     |             ----^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `scale`
[INFO] [stderr]   --> src/ballot.rs:51:8
[INFO] [stderr]    |
[INFO] [stderr] 51 | pub fn scale(student: Student) -> Student {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `identity`
[INFO] [stderr]   --> src/ballot.rs:83:8
[INFO] [stderr]    |
[INFO] [stderr] 83 | pub fn identity(student: Student) -> Student {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/optimizers/identity.rs:12:12
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub fn new(ballots: &Ballot) -> Identity {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `size`
[INFO] [stderr]   --> src/optimizers/mcmc/mcmc_naive.rs:15:8
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn size(&self , schedule: Vec<Vec<Student>>) -> (Vec<Vec<Student>>, usize) {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/optimizers/mcmc.rs:15:8
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn new(student_location: (usize, usize), proposed_house: usize) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `normalize`
[INFO] [stderr]   --> src/optimizers/mcmc.rs:58:4
[INFO] [stderr]    |
[INFO] [stderr] 58 | fn normalize(student: Student) -> Student {
[INFO] [stderr]    |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/optimizers/deans_algorithm.rs:16:12
[INFO] [stderr]    |
[INFO] [stderr] 16 |     pub fn new(ballots: Ballot) -> Self {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/optimizers/multi_dist.rs:15:12
[INFO] [stderr]    |
[INFO] [stderr] 15 |     pub fn new(ballots: &Ballot, random_seed: u64, weight_power: f64) -> MultiDist {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `student_weight`
[INFO] [stderr]    --> src/optimizers/multi_dist.rs:111:8
[INFO] [stderr]     |
[INFO] [stderr] 111 |     fn student_weight(student: &Student, house_id: usize) -> f64 {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable `Number` should have a snake case name
[INFO] [stderr]  --> src/data_output.rs:8:98
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub fn write_output(allocations: &Vec<Vec<Student>>, ballot: &Ballot, optimized_time: &Duration, Number: &str) {
[INFO] [stderr]   |                                                                                                  ^^^^^^ help: convert the identifier to snake case: `number`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 31 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/housing_optimization-560b262c71138c02
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "52ec09864c59654a9ff7245ef3926bf82cd55ef20cca529cacc60aa06fd588de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52ec09864c59654a9ff7245ef3926bf82cd55ef20cca529cacc60aa06fd588de", kill_on_drop: false }`
[INFO] [stdout] 52ec09864c59654a9ff7245ef3926bf82cd55ef20cca529cacc60aa06fd588de
