[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'... 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Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "d0fccf60d1d253a63b1b8ff88e14f75364fefcc09f6d98e10c1ce4460c30f049", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "d0fccf60d1d253a63b1b8ff88e14f75364fefcc09f6d98e10c1ce4460c30f049", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d0fccf60d1d253a63b1b8ff88e14f75364fefcc09f6d98e10c1ce4460c30f049", kill_on_drop: false }` [INFO] [stdout] d0fccf60d1d253a63b1b8ff88e14f75364fefcc09f6d98e10c1ce4460c30f049 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 6ff3efb60831aac15fcd7cb9d019835f748fc72f4bd0ef01c6109ab041556c05 [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" "6ff3efb60831aac15fcd7cb9d019835f748fc72f4bd0ef01c6109ab041556c05", kill_on_drop: false }` [INFO] [stderr] Compiling getrandom v0.1.15 [INFO] [stderr] Checking cfg-if v0.1.10 [INFO] [stderr] Checking ppv-lite86 v0.2.9 [INFO] [stderr] Checking linked-hash-map v0.5.3 [INFO] [stderr] Checking yaml-rust v0.4.4 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Checking rand_chacha v0.2.2 [INFO] [stderr] Checking rand v0.7.3 [INFO] [stderr] Checking housing-optimization v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `House` [INFO] [stdout] --> src/output.rs:1:38 [INFO] [stdout] | [INFO] [stdout] 1 | use crate::ballot::{Ballot, Student, House}; [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `optimizers::rand::SeedableRng` [INFO] [stdout] --> src/optimizers/mcmc/mcmc_naive.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use optimizers::rand::SeedableRng; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `optimizers::rand::SeedableRng` [INFO] [stdout] --> src/optimizers/mcmc.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use optimizers::rand::SeedableRng; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `House` [INFO] [stdout] --> src/output.rs:1:38 [INFO] [stdout] | [INFO] [stdout] 1 | use crate::ballot::{Ballot, Student, House}; [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `optimizers::rand::SeedableRng` [INFO] [stdout] --> src/optimizers/mcmc/mcmc_naive.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use optimizers::rand::SeedableRng; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `optimizers::rand::SeedableRng` [INFO] [stdout] --> src/optimizers/mcmc.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use optimizers::rand::SeedableRng; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `optimizers::rand::Rng` [INFO] [stdout] --> src/optimizers/mcmc/mcmc_naive.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | use optimizers::rand::Rng; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `student` [INFO] [stdout] --> src/main.rs:8:10 [INFO] [stdout] | [INFO] [stdout] 8 | fn scale(student: ballot::Student) -> ballot::Student { [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_student` [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/mcmc.rs:59:14 [INFO] [stdout] | [INFO] [stdout] 59 | 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: variable does not need to be mutable [INFO] [stdout] --> src/optimizers/identity.rs:21:13 [INFO] [stdout] | [INFO] [stdout] 21 | let mut schedule = generate_random_allocation(&self.ballots, 0); [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:51:17 [INFO] [stdout] | [INFO] [stdout] 51 | 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:54:13 [INFO] [stdout] | [INFO] [stdout] 54 | let mut schedule: Vec> = vec![vec![]; self.ballots.houses.len()]; [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:38:13 [INFO] [stdout] | [INFO] [stdout] 38 | let mut house_dist = WeightedIndex::new(house_weights).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/multi_dist.rs:64:13 [INFO] [stdout] | [INFO] [stdout] 64 | let mut schedule = generate_random_allocation(&self.ballots, 0); [INFO] [stdout] | ----^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `scaled` [INFO] [stdout] --> src/ballot.rs:49:8 [INFO] [stdout] | [INFO] [stdout] 49 | pub fn scaled(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: `normalize` [INFO] [stdout] --> src/ballot.rs:68:8 [INFO] [stdout] | [INFO] [stdout] 68 | pub fn normalize(student: Student) -> Student { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/optimizers/mcmc/mcmc_naive.rs:12:8 [INFO] [stdout] | [INFO] [stdout] 12 | 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/mcmc_naive.rs:17:8 [INFO] [stdout] | [INFO] [stdout] 17 | fn size(&self , schedule: Vec>) -> (Vec>, usize) { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/optimizers/mcmc.rs:16:8 [INFO] [stdout] | [INFO] [stdout] 16 | 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:59:4 [INFO] [stdout] | [INFO] [stdout] 59 | fn normalize(student: Student) -> Student { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/optimizers/multi_dist.rs:14:12 [INFO] [stdout] | [INFO] [stdout] 14 | pub fn new(ballots: &Ballot, random_seed: u64) -> MultiDist { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `weight` [INFO] [stdout] --> src/optimizers/multi_dist.rs:57:8 [INFO] [stdout] | [INFO] [stdout] 57 | fn weight(&self, student: Student, house_id: usize) -> f64 { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `scale` [INFO] [stdout] --> src/main.rs:8:4 [INFO] [stdout] | [INFO] [stdout] 8 | fn scale(student: ballot::Student) -> ballot::Student { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 20 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `optimizers::rand::Rng` [INFO] [stdout] --> src/optimizers/mcmc/mcmc_naive.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | use optimizers::rand::Rng; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `student` [INFO] [stdout] --> src/main.rs:8:10 [INFO] [stdout] | [INFO] [stdout] 8 | fn scale(student: ballot::Student) -> ballot::Student { [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_student` [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/mcmc.rs:59:14 [INFO] [stdout] | [INFO] [stdout] 59 | 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: variable does not need to be mutable [INFO] [stdout] --> src/optimizers/identity.rs:21:13 [INFO] [stdout] | [INFO] [stdout] 21 | let mut schedule = generate_random_allocation(&self.ballots, 0); [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:51:17 [INFO] [stdout] | [INFO] [stdout] 51 | 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:54:13 [INFO] [stdout] | [INFO] [stdout] 54 | let mut schedule: Vec> = vec![vec![]; self.ballots.houses.len()]; [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:38:13 [INFO] [stdout] | [INFO] [stdout] 38 | let mut house_dist = WeightedIndex::new(house_weights).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/multi_dist.rs:64:13 [INFO] [stdout] | [INFO] [stdout] 64 | let mut schedule = generate_random_allocation(&self.ballots, 0); [INFO] [stdout] | ----^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `scaled` [INFO] [stdout] --> src/ballot.rs:49:8 [INFO] [stdout] | [INFO] [stdout] 49 | pub fn scaled(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: `normalize` [INFO] [stdout] --> src/ballot.rs:68:8 [INFO] [stdout] | [INFO] [stdout] 68 | pub fn normalize(student: Student) -> Student { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/optimizers/mcmc/mcmc_naive.rs:12:8 [INFO] [stdout] | [INFO] [stdout] 12 | 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/mcmc_naive.rs:17:8 [INFO] [stdout] | [INFO] [stdout] 17 | fn size(&self , schedule: Vec>) -> (Vec>, usize) { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/optimizers/mcmc.rs:16:8 [INFO] [stdout] | [INFO] [stdout] 16 | 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:59:4 [INFO] [stdout] | [INFO] [stdout] 59 | fn normalize(student: Student) -> Student { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/optimizers/multi_dist.rs:14:12 [INFO] [stdout] | [INFO] [stdout] 14 | pub fn new(ballots: &Ballot, random_seed: u64) -> MultiDist { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `weight` [INFO] [stdout] --> src/optimizers/multi_dist.rs:57:8 [INFO] [stdout] | [INFO] [stdout] 57 | fn weight(&self, student: Student, house_id: usize) -> f64 { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `scale` [INFO] [stdout] --> src/main.rs:8:4 [INFO] [stdout] | [INFO] [stdout] 8 | fn scale(student: ballot::Student) -> ballot::Student { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 20 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 7.28s [INFO] running `Command { std: "docker" "inspect" "6ff3efb60831aac15fcd7cb9d019835f748fc72f4bd0ef01c6109ab041556c05", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6ff3efb60831aac15fcd7cb9d019835f748fc72f4bd0ef01c6109ab041556c05", kill_on_drop: false }` [INFO] [stdout] 6ff3efb60831aac15fcd7cb9d019835f748fc72f4bd0ef01c6109ab041556c05