[INFO] cloning repository https://github.com/mmajko/knapsack-problem
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mmajko/knapsack-problem" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmmajko%2Fknapsack-problem", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmmajko%2Fknapsack-problem'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 11cdd693800848f8d688ce82a5444f0e12f56b04
[INFO] checking mmajko/knapsack-problem against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmmajko%2Fknapsack-problem" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mmajko/knapsack-problem on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mmajko/knapsack-problem
[INFO] finished tweaking git repo https://github.com/mmajko/knapsack-problem
[INFO] tweaked toml for git repo https://github.com/mmajko/knapsack-problem written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/mmajko/knapsack-problem already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] eb28c2312491f93becb7f8b0b76a4ea28a0f3957d16b09c02c35a9736069c3a9
[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" "eb28c2312491f93becb7f8b0b76a4ea28a0f3957d16b09c02c35a9736069c3a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eb28c2312491f93becb7f8b0b76a4ea28a0f3957d16b09c02c35a9736069c3a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb28c2312491f93becb7f8b0b76a4ea28a0f3957d16b09c02c35a9736069c3a9", kill_on_drop: false }`
[INFO] [stdout] eb28c2312491f93becb7f8b0b76a4ea28a0f3957d16b09c02c35a9736069c3a9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cb145455d7d0c713bd1764831f93191cc9ae5851d3f87765b4d9e5ba648f92ad
[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" "cb145455d7d0c713bd1764831f93191cc9ae5851d3f87765b4d9e5ba648f92ad", kill_on_drop: false }`
[INFO] [stderr]     Checking rand v0.3.18
[INFO] [stderr]     Checking knapsack-problem v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `solvers::recursive`
[INFO] [stdout]  --> src/solvers/dynamic.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use solvers::recursive;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `KnapItem`, `sum_of_prices`
[INFO] [stdout]  --> src/solvers/recursive.rs:1:14
[INFO] [stdout]   |
[INFO] [stdout] 1 | use parser::{sum_of_prices, Knapsack, KnapItem};
[INFO] [stdout]   |              ^^^^^^^^^^^^^            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `inspect`
[INFO] [stdout]  --> src/genetic/mod.rs:6:48
[INFO] [stdout]   |
[INFO] [stdout] 6 | use self::utils::{odds_are, random_individual, inspect, sort_population};
[INFO] [stdout]   |                                                ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `solvers::recursive`
[INFO] [stdout]  --> src/solvers/dynamic.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use solvers::recursive;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `KnapItem`, `sum_of_prices`
[INFO] [stdout]  --> src/solvers/recursive.rs:1:14
[INFO] [stdout]   |
[INFO] [stdout] 1 | use parser::{sum_of_prices, Knapsack, KnapItem};
[INFO] [stdout]   |              ^^^^^^^^^^^^^            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `inspect`
[INFO] [stdout]  --> src/genetic/mod.rs:6:48
[INFO] [stdout]   |
[INFO] [stdout] 6 | use self::utils::{odds_are, random_individual, inspect, sort_population};
[INFO] [stdout]   |                                                ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/solvers/mod.rs:60:72
[INFO] [stdout]    |
[INFO] [stdout] 60 |     let new_items = knap.items.clone().iter().enumerate().filter(|&(i, x)| bits[i])
[INFO] [stdout]    |                                                                        ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/solvers/mod.rs:61:28
[INFO] [stdout]    |
[INFO] [stdout] 61 |                     .map(|(i, x)| *x).collect();
[INFO] [stdout]    |                            ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `elitism_count`
[INFO] [stdout]   --> src/genetic/mod.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let elitism_count = 2;
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_elitism_count`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/genetic/mod.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     for i in 0..500 {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pop_size`
[INFO] [stdout]  --> src/genetic/selectors.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let pop_size = population.len();
[INFO] [stdout]   |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_pop_size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `generation`
[INFO] [stdout]   --> src/genetic/utils.rs:34:19
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub fn inspect<F>(generation: usize, sorted_population: &Vec<Vec<bool>>, fitness_fn: &F) where F: Fn(&Vec<bool>) -> usize {
[INFO] [stdout]    |                   ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_generation`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/reporter.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let mut stype = String::from(format!("{:?}", solution));
[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: variant is never constructed: `None`
[INFO] [stdout]   --> src/parser.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     None,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FPTAS25`
[INFO] [stdout]   --> src/parser.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     FPTAS25,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FPTAS75`
[INFO] [stdout]   --> src/parser.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     FPTAS75,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `inspect`
[INFO] [stdout]   --> src/genetic/utils.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub fn inspect<F>(generation: usize, sorted_population: &Vec<Vec<bool>>, fitness_fn: &F) where F: Fn(&Vec<bool>) -> usize {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/solvers/mod.rs:60:72
[INFO] [stdout]    |
[INFO] [stdout] 60 |     let new_items = knap.items.clone().iter().enumerate().filter(|&(i, x)| bits[i])
[INFO] [stdout]    |                                                                        ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/solvers/mod.rs:61:28
[INFO] [stdout]    |
[INFO] [stdout] 61 |                     .map(|(i, x)| *x).collect();
[INFO] [stdout]    |                            ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `elitism_count`
[INFO] [stdout]   --> src/genetic/mod.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let elitism_count = 2;
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_elitism_count`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/genetic/mod.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     for i in 0..500 {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pop_size`
[INFO] [stdout]  --> src/genetic/selectors.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let pop_size = population.len();
[INFO] [stdout]   |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_pop_size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `generation`
[INFO] [stdout]   --> src/genetic/utils.rs:34:19
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub fn inspect<F>(generation: usize, sorted_population: &Vec<Vec<bool>>, fitness_fn: &F) where F: Fn(&Vec<bool>) -> usize {
[INFO] [stdout]    |                   ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_generation`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/reporter.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let mut stype = String::from(format!("{:?}", solution));
[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: variant is never constructed: `None`
[INFO] [stdout]   --> src/parser.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     None,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FPTAS25`
[INFO] [stdout]   --> src/parser.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     FPTAS25,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FPTAS75`
[INFO] [stdout]   --> src/parser.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     FPTAS75,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `inspect`
[INFO] [stdout]   --> src/genetic/utils.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub fn inspect<F>(generation: usize, sorted_population: &Vec<Vec<bool>>, fitness_fn: &F) where F: Fn(&Vec<bool>) -> usize {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.64s
[INFO] running `Command { std: "docker" "inspect" "cb145455d7d0c713bd1764831f93191cc9ae5851d3f87765b4d9e5ba648f92ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb145455d7d0c713bd1764831f93191cc9ae5851d3f87765b4d9e5ba648f92ad", kill_on_drop: false }`
[INFO] [stdout] cb145455d7d0c713bd1764831f93191cc9ae5851d3f87765b4d9e5ba648f92ad