[INFO] updating cached repository https://github.com/mmajko/knapsack-problem
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 11cdd693800848f8d688ce82a5444f0e12f56b04
[INFO] testing mmajko/knapsack-problem against beta-2019-09-28 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmmajko%2Fknapsack-problem" "work/builds/worker-5/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mmajko/knapsack-problem on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[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 work/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/mmajko/knapsack-problem already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] 00ba4127b5c9d505dbee4516ea005ac7176ad4a6baafe639e7d7af520d720331
[INFO] running `"docker" "start" "-a" "00ba4127b5c9d505dbee4516ea005ac7176ad4a6baafe639e7d7af520d720331"`
[INFO] [stderr]    Compiling rand v0.3.18
[INFO] [stderr]    Compiling knapsack-problem v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `solvers::recursive`
[INFO] [stderr]  --> src/solvers/dynamic.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use solvers::recursive;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `KnapItem`, `sum_of_prices`
[INFO] [stderr]  --> src/solvers/recursive.rs:1:14
[INFO] [stderr]   |
[INFO] [stderr] 1 | use parser::{sum_of_prices, Knapsack, KnapItem};
[INFO] [stderr]   |              ^^^^^^^^^^^^^            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `inspect`
[INFO] [stderr]  --> src/genetic/mod.rs:6:48
[INFO] [stderr]   |
[INFO] [stderr] 6 | use self::utils::{odds_are, random_individual, inspect, sort_population};
[INFO] [stderr]   |                                                ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/solvers/mod.rs:60:72
[INFO] [stderr]    |
[INFO] [stderr] 60 |     let new_items = knap.items.clone().iter().enumerate().filter(|&(i, x)| bits[i])
[INFO] [stderr]    |                                                                        ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/solvers/mod.rs:61:28
[INFO] [stderr]    |
[INFO] [stderr] 61 |                     .map(|(i, x)| *x).collect();
[INFO] [stderr]    |                            ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `elitism_count`
[INFO] [stderr]   --> src/genetic/mod.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |     let elitism_count = 2;
[INFO] [stderr]    |         ^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_elitism_count`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/genetic/mod.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 |     for i in 0..500 {
[INFO] [stderr]    |         ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `pop_size`
[INFO] [stderr]  --> src/genetic/selectors.rs:7:9
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let pop_size = population.len();
[INFO] [stderr]   |         ^^^^^^^^ help: consider prefixing with an underscore: `_pop_size`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `generation`
[INFO] [stderr]   --> src/genetic/utils.rs:34:19
[INFO] [stderr]    |
[INFO] [stderr] 34 | pub fn inspect<F>(generation: usize, sorted_population: &Vec<Vec<bool>>, fitness_fn: &F) where F: Fn(&Vec<bool>) -> usize {
[INFO] [stderr]    |                   ^^^^^^^^^^ help: consider prefixing with an underscore: `_generation`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/reporter.rs:22:9
[INFO] [stderr]    |
[INFO] [stderr] 22 |     let mut stype = String::from(format!("{:?}", solution));
[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: variant is never constructed: `None`
[INFO] [stderr]   --> src/parser.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     None,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `FPTAS25`
[INFO] [stderr]   --> src/parser.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     FPTAS25,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `FPTAS75`
[INFO] [stderr]   --> src/parser.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     FPTAS75,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `inspect`
[INFO] [stderr]   --> src/genetic/utils.rs:34:1
[INFO] [stderr]    |
[INFO] [stderr] 34 | pub fn inspect<F>(generation: usize, sorted_population: &Vec<Vec<bool>>, fitness_fn: &F) where F: Fn(&Vec<bool>) -> usize {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.09s
[INFO] running `"docker" "inspect" "00ba4127b5c9d505dbee4516ea005ac7176ad4a6baafe639e7d7af520d720331"`
[INFO] running `"docker" "rm" "-f" "00ba4127b5c9d505dbee4516ea005ac7176ad4a6baafe639e7d7af520d720331"`
[INFO] [stdout] 00ba4127b5c9d505dbee4516ea005ac7176ad4a6baafe639e7d7af520d720331
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "test" "--frozen" "--no-run"`
[INFO] [stdout] 71315f444b1646b5cb944018e9d3f4910db2d5da23e0317d85ce85a827af846b
[INFO] running `"docker" "start" "-a" "71315f444b1646b5cb944018e9d3f4910db2d5da23e0317d85ce85a827af846b"`
[INFO] [stderr]    Compiling knapsack-problem v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `solvers::recursive`
[INFO] [stderr]  --> src/solvers/dynamic.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use solvers::recursive;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `KnapItem`, `sum_of_prices`
[INFO] [stderr]  --> src/solvers/recursive.rs:1:14
[INFO] [stderr]   |
[INFO] [stderr] 1 | use parser::{sum_of_prices, Knapsack, KnapItem};
[INFO] [stderr]   |              ^^^^^^^^^^^^^            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `inspect`
[INFO] [stderr]  --> src/genetic/mod.rs:6:48
[INFO] [stderr]   |
[INFO] [stderr] 6 | use self::utils::{odds_are, random_individual, inspect, sort_population};
[INFO] [stderr]   |                                                ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/solvers/mod.rs:60:72
[INFO] [stderr]    |
[INFO] [stderr] 60 |     let new_items = knap.items.clone().iter().enumerate().filter(|&(i, x)| bits[i])
[INFO] [stderr]    |                                                                        ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/solvers/mod.rs:61:28
[INFO] [stderr]    |
[INFO] [stderr] 61 |                     .map(|(i, x)| *x).collect();
[INFO] [stderr]    |                            ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `elitism_count`
[INFO] [stderr]   --> src/genetic/mod.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |     let elitism_count = 2;
[INFO] [stderr]    |         ^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_elitism_count`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/genetic/mod.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 |     for i in 0..500 {
[INFO] [stderr]    |         ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `pop_size`
[INFO] [stderr]  --> src/genetic/selectors.rs:7:9
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let pop_size = population.len();
[INFO] [stderr]   |         ^^^^^^^^ help: consider prefixing with an underscore: `_pop_size`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `generation`
[INFO] [stderr]   --> src/genetic/utils.rs:34:19
[INFO] [stderr]    |
[INFO] [stderr] 34 | pub fn inspect<F>(generation: usize, sorted_population: &Vec<Vec<bool>>, fitness_fn: &F) where F: Fn(&Vec<bool>) -> usize {
[INFO] [stderr]    |                   ^^^^^^^^^^ help: consider prefixing with an underscore: `_generation`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/reporter.rs:22:9
[INFO] [stderr]    |
[INFO] [stderr] 22 |     let mut stype = String::from(format!("{:?}", solution));
[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: variant is never constructed: `None`
[INFO] [stderr]   --> src/parser.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     None,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `FPTAS25`
[INFO] [stderr]   --> src/parser.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     FPTAS25,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `FPTAS75`
[INFO] [stderr]   --> src/parser.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     FPTAS75,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `inspect`
[INFO] [stderr]   --> src/genetic/utils.rs:34:1
[INFO] [stderr]    |
[INFO] [stderr] 34 | pub fn inspect<F>(generation: usize, sorted_population: &Vec<Vec<bool>>, fitness_fn: &F) where F: Fn(&Vec<bool>) -> usize {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.83s
[INFO] running `"docker" "inspect" "71315f444b1646b5cb944018e9d3f4910db2d5da23e0317d85ce85a827af846b"`
[INFO] running `"docker" "rm" "-f" "71315f444b1646b5cb944018e9d3f4910db2d5da23e0317d85ce85a827af846b"`
[INFO] [stdout] 71315f444b1646b5cb944018e9d3f4910db2d5da23e0317d85ce85a827af846b
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "test" "--frozen"`
[INFO] [stdout] 78c5720ba424ca90497e277b7043992624e608987caa40bc2d52ef3a19b39642
[INFO] running `"docker" "start" "-a" "78c5720ba424ca90497e277b7043992624e608987caa40bc2d52ef3a19b39642"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/knapsack_problem-ae6e55d107efdafb
[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 `"docker" "inspect" "78c5720ba424ca90497e277b7043992624e608987caa40bc2d52ef3a19b39642"`
[INFO] running `"docker" "rm" "-f" "78c5720ba424ca90497e277b7043992624e608987caa40bc2d52ef3a19b39642"`
[INFO] [stdout] 78c5720ba424ca90497e277b7043992624e608987caa40bc2d52ef3a19b39642