[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] 0d829509936040139591c910892d4efd75c1d09a
[INFO] checking ChoateProgrammingUnion/housing-lottery-optimization against master#430feb24a46993e5073c1bb1b39da190d83fa2bf for pr-78363
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChoateProgrammingUnion%2Fhousing-lottery-optimization" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ChoateProgrammingUnion/housing-lottery-optimization on toolchain 430feb24a46993e5073c1bb1b39da190d83fa2bf
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+430feb24a46993e5073c1bb1b39da190d83fa2bf" "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-5/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" "+430feb24a46993e5073c1bb1b39da190d83fa2bf" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+430feb24a46993e5073c1bb1b39da190d83fa2bf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 191f45444f4b4693a5a4f449ad808fbc740bab34def628b5f28f4f89e55b827a
[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" "191f45444f4b4693a5a4f449ad808fbc740bab34def628b5f28f4f89e55b827a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "191f45444f4b4693a5a4f449ad808fbc740bab34def628b5f28f4f89e55b827a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "191f45444f4b4693a5a4f449ad808fbc740bab34def628b5f28f4f89e55b827a", kill_on_drop: false }`
[INFO] [stdout] 191f45444f4b4693a5a4f449ad808fbc740bab34def628b5f28f4f89e55b827a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+430feb24a46993e5073c1bb1b39da190d83fa2bf" "check" "--frozen" "--all" "--all-targets" "--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] 4c68bfbb9bf65855037cb726298f7f88299d697543fe815a9758b6912064b108
[INFO] running `Command { std: "docker" "start" "-a" "4c68bfbb9bf65855037cb726298f7f88299d697543fe815a9758b6912064b108", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking ppv-lite86 v0.2.9
[INFO] [stderr]     Checking fixedbitset v0.2.0
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[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking yaml-rust v0.4.4
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling indexmap v1.6.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking aho-corasick v0.7.13
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking petgraph v0.5.1
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking housing-optimization v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: type `Minimax_swap` should have an upper camel case name
[INFO] [stdout]  --> src/optimizers/mcmc_polyswap/minimax_swap.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct Minimax_swap{
[INFO] [stdout]   |            ^^^^^^^^^^^^ help: convert the identifier to upper camel case: `MinimaxSwap`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `MCMCOptimizer_polyswap` should have an upper camel case name
[INFO] [stdout]   --> src/optimizers/mcmc_polyswap.rs:24:17
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub(self) trait MCMCOptimizer_polyswap: Optimizer {
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `McmcoptimizerPolyswap`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ballot::Ballot`
[INFO] [stdout]    --> src/optimizers/mcmc.rs:100:9
[INFO] [stdout]     |
[INFO] [stdout] 100 |     use ballot::Ballot;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Minimax_swap` should have an upper camel case name
[INFO] [stdout]  --> src/optimizers/mcmc_polyswap/minimax_swap.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct Minimax_swap{
[INFO] [stdout]   |            ^^^^^^^^^^^^ help: convert the identifier to upper camel case: `MinimaxSwap`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ballot::Ballot`
[INFO] [stdout]    --> src/optimizers/mcmc_polyswap/minimax_swap.rs:129:9
[INFO] [stdout]     |
[INFO] [stdout] 129 |     use ballot::Ballot;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `MCMCOptimizer_polyswap` should have an upper camel case name
[INFO] [stdout]   --> src/optimizers/mcmc_polyswap.rs:24:17
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub(self) trait MCMCOptimizer_polyswap: Optimizer {
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `McmcoptimizerPolyswap`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `students_total`
[INFO] [stdout]   --> src/optimizers.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |     let students_total = ballot.students.len();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_students_total`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `student`
[INFO] [stdout]   --> src/optimizers.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |     for student in 0..students.len() {
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_student`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `friend`
[INFO] [stdout]   --> src/optimizers/mcmc/mcmc_swap.rs:35:13
[INFO] [stdout]    |
[INFO] [stdout] 35 |         for friend in friends{
[INFO] [stdout]    |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_friend`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `friend`
[INFO] [stdout]   --> src/optimizers/mcmc/mcmc_swap.rs:70:13
[INFO] [stdout]    |
[INFO] [stdout] 70 |         for friend in friends{
[INFO] [stdout]    |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_friend`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `student`
[INFO] [stdout]    --> src/optimizers/mcmc/mcmc_swap.rs:104:17
[INFO] [stdout]     |
[INFO] [stdout] 104 |             for student in 0..schedule[house].len(){
[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_swap.rs:145:13
[INFO] [stdout]     |
[INFO] [stdout] 145 |         for round in 0..rounds{
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_round`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `student_location` is never read
[INFO] [stdout]   --> src/optimizers/mcmc_polyswap/minimax_swap.rs:59:13
[INFO] [stdout]    |
[INFO] [stdout] 59 |         let mut student_location = 0;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `new_house` is never read
[INFO] [stdout]   --> src/optimizers/mcmc_polyswap/minimax_swap.rs:60:13
[INFO] [stdout]    |
[INFO] [stdout] 60 |         let mut new_house = 0;
[INFO] [stdout]    |             ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `student`
[INFO] [stdout]   --> src/optimizers/mcmc_polyswap/minimax_swap.rs:76:21
[INFO] [stdout]    |
[INFO] [stdout] 76 |                 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_polyswap/minimax_swap.rs:113:13
[INFO] [stdout]     |
[INFO] [stdout] 113 |         for round in 0..rounds{
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_round`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `new_seed`
[INFO] [stdout]    --> src/optimizers/mcmc_polyswap/minimax_swap.rs:123:26
[INFO] [stdout]     |
[INFO] [stdout] 123 |     fn reseed(&mut self, new_seed: u64) {}
[INFO] [stdout]     |                          ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_seed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `nearest`
[INFO] [stdout]   --> src/optimizers/network.rs:76:9
[INFO] [stdout]    |
[INFO] [stdout] 76 |     let mut nearest = Vec::<NodeIndex>::new();
[INFO] [stdout]    |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_nearest`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `other_edge`
[INFO] [stdout]   --> src/optimizers/network.rs:98:37
[INFO] [stdout]    |
[INFO] [stdout] 98 |                     while let Some((other_edge, other_neighbor)) = walker.next(&contraction_graph) {
[INFO] [stdout]    |                                     ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_other_edge`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rounds`
[INFO] [stdout]    --> src/optimizers/network.rs:203:28
[INFO] [stdout]     |
[INFO] [stdout] 203 |     fn optimize(&mut self, rounds: usize) -> Vec<Vec<Student>> {self.clone().generate()}
[INFO] [stdout]     |                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_rounds`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `new_seed`
[INFO] [stdout]    --> src/optimizers/network.rs:204:26
[INFO] [stdout]     |
[INFO] [stdout] 204 |     fn reseed(&mut self, new_seed: u64) {}
[INFO] [stdout]     |                          ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_seed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `students_total`
[INFO] [stdout]   --> src/optimizers.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |     let students_total = ballot.students.len();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_students_total`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `student`
[INFO] [stdout]   --> src/optimizers.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |     for student in 0..students.len() {
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_student`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `friend`
[INFO] [stdout]   --> src/optimizers/mcmc/mcmc_swap.rs:35:13
[INFO] [stdout]    |
[INFO] [stdout] 35 |         for friend in friends{
[INFO] [stdout]    |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_friend`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `friend`
[INFO] [stdout]   --> src/optimizers/mcmc/mcmc_swap.rs:70:13
[INFO] [stdout]    |
[INFO] [stdout] 70 |         for friend in friends{
[INFO] [stdout]    |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_friend`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `student`
[INFO] [stdout]    --> src/optimizers/mcmc/mcmc_swap.rs:104:17
[INFO] [stdout]     |
[INFO] [stdout] 104 |             for student in 0..schedule[house].len(){
[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_swap.rs:145:13
[INFO] [stdout]     |
[INFO] [stdout] 145 |         for round in 0..rounds{
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_round`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `student_location` is never read
[INFO] [stdout]   --> src/optimizers/mcmc_polyswap/minimax_swap.rs:59:13
[INFO] [stdout]    |
[INFO] [stdout] 59 |         let mut student_location = 0;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `new_house` is never read
[INFO] [stdout]   --> src/optimizers/mcmc_polyswap/minimax_swap.rs:60:13
[INFO] [stdout]    |
[INFO] [stdout] 60 |         let mut new_house = 0;
[INFO] [stdout]    |             ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `student`
[INFO] [stdout]   --> src/optimizers/mcmc_polyswap/minimax_swap.rs:76:21
[INFO] [stdout]    |
[INFO] [stdout] 76 |                 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_polyswap/minimax_swap.rs:113:13
[INFO] [stdout]     |
[INFO] [stdout] 113 |         for round in 0..rounds{
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_round`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `new_seed`
[INFO] [stdout]    --> src/optimizers/mcmc_polyswap/minimax_swap.rs:123:26
[INFO] [stdout]     |
[INFO] [stdout] 123 |     fn reseed(&mut self, new_seed: u64) {}
[INFO] [stdout]     |                          ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_seed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `nearest`
[INFO] [stdout]   --> src/optimizers/network.rs:76:9
[INFO] [stdout]    |
[INFO] [stdout] 76 |     let mut nearest = Vec::<NodeIndex>::new();
[INFO] [stdout]    |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_nearest`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `other_edge`
[INFO] [stdout]   --> src/optimizers/network.rs:98:37
[INFO] [stdout]    |
[INFO] [stdout] 98 |                     while let Some((other_edge, other_neighbor)) = walker.next(&contraction_graph) {
[INFO] [stdout]    |                                     ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_other_edge`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rounds`
[INFO] [stdout]    --> src/optimizers/network.rs:203:28
[INFO] [stdout]     |
[INFO] [stdout] 203 |     fn optimize(&mut self, rounds: usize) -> Vec<Vec<Student>> {self.clone().generate()}
[INFO] [stdout]     |                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_rounds`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `new_seed`
[INFO] [stdout]    --> src/optimizers/network.rs:204:26
[INFO] [stdout]     |
[INFO] [stdout] 204 |     fn reseed(&mut self, new_seed: u64) {}
[INFO] [stdout]     |                          ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_seed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `graph`
[INFO] [stdout]    --> src/optimizers/network.rs:216:13
[INFO] [stdout]     |
[INFO] [stdout] 216 |         let graph = optimizers::network::NetworkOptimizer::new(&ballot, 10.0, 10.0);
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_graph`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exclude`
[INFO] [stdout]    --> src/optimizers/network.rs:242:13
[INFO] [stdout]     |
[INFO] [stdout] 242 |         let mut exclude: HashMap<optimizers::network::NodeIndex, bool> = HashMap::new();
[INFO] [stdout]     |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_exclude`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/optimizers.rs:50:13
[INFO] [stdout]    |
[INFO] [stdout] 50 |         let mut student = students.pop().expect("Empty datatype").clone();
[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/optimizers/mcmc.rs:86:17
[INFO] [stdout]    |
[INFO] [stdout] 86 |             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.rs:89:21
[INFO] [stdout]    |
[INFO] [stdout] 89 |                 let mut student2 = schedule[proposed_change.proposed_house.0].remove(proposed_change.proposed_house.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_polyswap.rs:53:17
[INFO] [stdout]    |
[INFO] [stdout] 53 |             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.rs:50:13
[INFO] [stdout]    |
[INFO] [stdout] 50 |         let mut student = students.pop().expect("Empty datatype").clone();
[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/optimizers/mcmc.rs:86:17
[INFO] [stdout]    |
[INFO] [stdout] 86 |             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.rs:89:21
[INFO] [stdout]    |
[INFO] [stdout] 89 |                 let mut student2 = schedule[proposed_change.proposed_house.0].remove(proposed_change.proposed_house.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_polyswap.rs:53:17
[INFO] [stdout]    |
[INFO] [stdout] 53 |             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/network.rs:76:9
[INFO] [stdout]    |
[INFO] [stdout] 76 |     let mut nearest = Vec::<NodeIndex>::new();
[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/network.rs:86:17
[INFO] [stdout]    |
[INFO] [stdout] 86 |             let mut current_node = heap.peek_mut().unwrap();
[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/network.rs:87:17
[INFO] [stdout]    |
[INFO] [stdout] 87 |             let mut current_distance = current_node.distance.clone();
[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/network.rs:99:29
[INFO] [stdout]    |
[INFO] [stdout] 99 |                         let mut preexisting_edge = contraction_graph.find_edge(other_neighbor, neighbor);
[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/network.rs:100:29
[INFO] [stdout]     |
[INFO] [stdout] 100 | ...   let mut max_distance = contraction_graph.edge_weight(edge).unwrap() + current_distance; // max possible distance for an edge
[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/network.rs:112:17
[INFO] [stdout]     |
[INFO] [stdout] 112 |             let mut nearest_neighbor = heap.pop().unwrap();
[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/network.rs:145:17
[INFO] [stdout]     |
[INFO] [stdout] 145 |             let mut house_node = Node::new(house.name.clone(), None).clone();
[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/network.rs:151:17
[INFO] [stdout]     |
[INFO] [stdout] 151 |             let mut student_node = Node::new(student.name.clone(), Some(student.clone()));
[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/network.rs:160:25
[INFO] [stdout]     |
[INFO] [stdout] 160 |                     let mut friend_node = student_nodes[*friend_pref];
[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/network.rs:187:17
[INFO] [stdout]     |
[INFO] [stdout] 187 |             let mut max_cap = self.ballots.houses[counter].capacity.clone();
[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/network.rs:189:17
[INFO] [stdout]     |
[INFO] [stdout] 189 |             let mut student_nodes = k_nearest(&mut contraction_graph.clone(), house, max_cap, &mut exclude);
[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/network.rs:76:9
[INFO] [stdout]    |
[INFO] [stdout] 76 |     let mut nearest = Vec::<NodeIndex>::new();
[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/network.rs:86:17
[INFO] [stdout]    |
[INFO] [stdout] 86 |             let mut current_node = heap.peek_mut().unwrap();
[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/network.rs:87:17
[INFO] [stdout]    |
[INFO] [stdout] 87 |             let mut current_distance = current_node.distance.clone();
[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/network.rs:99:29
[INFO] [stdout]    |
[INFO] [stdout] 99 |                         let mut preexisting_edge = contraction_graph.find_edge(other_neighbor, neighbor);
[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/network.rs:100:29
[INFO] [stdout]     |
[INFO] [stdout] 100 | ...   let mut max_distance = contraction_graph.edge_weight(edge).unwrap() + current_distance; // max possible distance for an edge
[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/network.rs:112:17
[INFO] [stdout]     |
[INFO] [stdout] 112 |             let mut nearest_neighbor = heap.pop().unwrap();
[INFO] [stdout]     |                 ----^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `size`
[INFO] [stdout]   --> src/optimizers/mcmc/mcmc_swap.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn size(&self , schedule: Vec<Vec<Student>>) -> (Vec<Vec<Student>>, usize) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/optimizers/network.rs:145:17
[INFO] [stdout]     |
[INFO] [stdout] 145 |             let mut house_node = Node::new(house.name.clone(), None).clone();
[INFO] [stdout]     |                 ----^^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/optimizers/mcmc_polyswap/minimax_swap.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub fn new(ballots: &Ballot) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `size`
[INFO] [stdout]   --> src/optimizers/mcmc_polyswap/minimax_swap.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 |     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_polyswap.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn new(student_location: (usize, usize), proposed_house: usize) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/optimizers/network.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn new(name: String, student: std::option::Option<Student>) -> Self{
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/optimizers/network.rs:140:12
[INFO] [stdout]     |
[INFO] [stdout] 140 |     pub fn new(ballots: &Ballot, friend_const: f64, friend_ratio: f64) -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `validate_ballot`
[INFO] [stdout]   --> src/optimizers.rs:36:4
[INFO] [stdout]    |
[INFO] [stdout] 36 | fn validate_ballot(ballot: &Ballot, schedule: Vec<Vec<Student>>) -> bool{
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/optimizers/network.rs:151:17
[INFO] [stdout]     |
[INFO] [stdout] 151 |             let mut student_node = Node::new(student.name.clone(), Some(student.clone()));
[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/network.rs:160:25
[INFO] [stdout]     |
[INFO] [stdout] 160 |                     let mut friend_node = student_nodes[*friend_pref];
[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/network.rs:187:17
[INFO] [stdout]     |
[INFO] [stdout] 187 |             let mut max_cap = self.ballots.houses[counter].capacity.clone();
[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/network.rs:189:17
[INFO] [stdout]     |
[INFO] [stdout] 189 |             let mut student_nodes = k_nearest(&mut contraction_graph.clone(), house, max_cap, &mut exclude);
[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/network.rs:223:13
[INFO] [stdout]     |
[INFO] [stdout] 223 |         let mut graph = optimizers::network::NetworkOptimizer::new(&ballot, 10.0, 10.0);
[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/network.rs:233:13
[INFO] [stdout]     |
[INFO] [stdout] 233 |         let mut graph = optimizers::network::NetworkOptimizer::new(&ballot, 10.0, 10.0);
[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/network.rs:242:13
[INFO] [stdout]     |
[INFO] [stdout] 242 |         let mut exclude: HashMap<optimizers::network::NodeIndex, bool> = HashMap::new();
[INFO] [stdout]     |             ----^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `size`
[INFO] [stdout]   --> src/optimizers/mcmc/mcmc_swap.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn size(&self , schedule: Vec<Vec<Student>>) -> (Vec<Vec<Student>>, usize) {
[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: `size`
[INFO] [stdout]   --> src/optimizers/mcmc_polyswap/minimax_swap.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 |     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_polyswap.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn new(student_location: (usize, usize), proposed_house: usize) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 39 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 42 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.34s
[INFO] running `Command { std: "docker" "inspect" "4c68bfbb9bf65855037cb726298f7f88299d697543fe815a9758b6912064b108", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c68bfbb9bf65855037cb726298f7f88299d697543fe815a9758b6912064b108", kill_on_drop: false }`
[INFO] [stdout] 4c68bfbb9bf65855037cb726298f7f88299d697543fe815a9758b6912064b108