[INFO] cloning repository https://github.com/K0max/Algo_knapsack_exp
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/K0max/Algo_knapsack_exp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FK0max%2FAlgo_knapsack_exp", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FK0max%2FAlgo_knapsack_exp'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d431d178bb02dea236c7dbaa502b7bcb3085fb6c
[INFO] checking K0max/Algo_knapsack_exp against master#30840c53f414b753cb08f14620906572f88dda4b for pr-123531
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FK0max%2FAlgo_knapsack_exp" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/K0max/Algo_knapsack_exp on toolchain 30840c53f414b753cb08f14620906572f88dda4b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+30840c53f414b753cb08f14620906572f88dda4b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/K0max/Algo_knapsack_exp
[INFO] finished tweaking git repo https://github.com/K0max/Algo_knapsack_exp
[INFO] tweaked toml for git repo https://github.com/K0max/Algo_knapsack_exp written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/K0max/Algo_knapsack_exp already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+30840c53f414b753cb08f14620906572f88dda4b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking K0max/Algo_knapsack_exp against try#18fb860b8a8e7ca508746882328061d0fe352543 for pr-123531
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FK0max%2FAlgo_knapsack_exp" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/K0max/Algo_knapsack_exp on toolchain 18fb860b8a8e7ca508746882328061d0fe352543
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+18fb860b8a8e7ca508746882328061d0fe352543" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/K0max/Algo_knapsack_exp
[INFO] finished tweaking git repo https://github.com/K0max/Algo_knapsack_exp
[INFO] tweaked toml for git repo https://github.com/K0max/Algo_knapsack_exp written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/K0max/Algo_knapsack_exp already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+18fb860b8a8e7ca508746882328061d0fe352543" "fetch" "--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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+18fb860b8a8e7ca508746882328061d0fe352543" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a1a5a585f64f7569c074be7a36c37b57e826220a21ab86865bdeb3e22adb322f
[INFO] running `Command { std: "docker" "start" "-a" "a1a5a585f64f7569c074be7a36c37b57e826220a21ab86865bdeb3e22adb322f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a1a5a585f64f7569c074be7a36c37b57e826220a21ab86865bdeb3e22adb322f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1a5a585f64f7569c074be7a36c37b57e826220a21ab86865bdeb3e22adb322f", kill_on_drop: false }`
[INFO] [stdout] a1a5a585f64f7569c074be7a36c37b57e826220a21ab86865bdeb3e22adb322f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+18fb860b8a8e7ca508746882328061d0fe352543" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e7b5ea94203abb3ae8a90fed268ed1bc3ca834dcf9d308f5eeffe514e7c703f3
[INFO] running `Command { std: "docker" "start" "-a" "e7b5ea94203abb3ae8a90fed268ed1bc3ca834dcf9d308f5eeffe514e7c703f3", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.150
[INFO] [stderr]     Checking getrandom v0.2.11
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking exp3_rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::time::Instant`
[INFO] [stdout]  --> src/monte_carlo.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::time::Instant;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Instant`
[INFO] [stdout]  --> src/monte_carlo.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::time::Instant;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dp_res`
[INFO] [stdout]   --> src/main.rs:43:13
[INFO] [stdout]    |
[INFO] [stdout] 43 |         let dp_res = dp::knapsack(&items, capacity);
[INFO] [stdout]    |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_dp_res`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/dp.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `knapsack` is never used
[INFO] [stdout]   --> src/greedy.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub fn knapsack(items: &[Item], capacity: usize) -> usize {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/greedy.rs:35:4
[INFO] [stdout]    |
[INFO] [stdout] 35 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `knapsack` is never used
[INFO] [stdout]  --> src/divide_and_conquer.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn knapsack(items: &[Item], capacity: usize) -> usize {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/divide_and_conquer.rs:32:4
[INFO] [stdout]    |
[INFO] [stdout] 32 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `knapsack` is never used
[INFO] [stdout]  --> src/backtracking.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn knapsack(items: &[Item], capacity: usize) -> usize {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `backtrack` is never used
[INFO] [stdout]   --> src/backtracking.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn backtrack(items: &[Item], capacity: usize, selected: &mut Vec<bool>, current_value: &mut usize, current_weight: &mut usize, max_value:...
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/backtracking.rs:48:4
[INFO] [stdout]    |
[INFO] [stdout] 48 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `knapsack` is never used
[INFO] [stdout]   --> src/branch_and_bound.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn knapsack(items: &[Item], capacity: usize) -> usize {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `branch_and_bound` is never used
[INFO] [stdout]   --> src/branch_and_bound.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn branch_and_bound(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/branch_and_bound.rs:91:4
[INFO] [stdout]    |
[INFO] [stdout] 91 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `knapsack` is never used
[INFO] [stdout]   --> src/monte_carlo.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn knapsack(items: &[Item], capacity: usize, num_samples: usize) -> usize {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/monte_carlo.rs:40:4
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dp_res`
[INFO] [stdout]   --> src/main.rs:43:13
[INFO] [stdout]    |
[INFO] [stdout] 43 |         let dp_res = dp::knapsack(&items, capacity);
[INFO] [stdout]    |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_dp_res`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/dp.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `knapsack` is never used
[INFO] [stdout]   --> src/greedy.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub fn knapsack(items: &[Item], capacity: usize) -> usize {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/greedy.rs:35:4
[INFO] [stdout]    |
[INFO] [stdout] 35 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `knapsack` is never used
[INFO] [stdout]  --> src/divide_and_conquer.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn knapsack(items: &[Item], capacity: usize) -> usize {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/divide_and_conquer.rs:32:4
[INFO] [stdout]    |
[INFO] [stdout] 32 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `knapsack` is never used
[INFO] [stdout]  --> src/backtracking.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn knapsack(items: &[Item], capacity: usize) -> usize {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `backtrack` is never used
[INFO] [stdout]   --> src/backtracking.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn backtrack(items: &[Item], capacity: usize, selected: &mut Vec<bool>, current_value: &mut usize, current_weight: &mut usize, max_value:...
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/backtracking.rs:48:4
[INFO] [stdout]    |
[INFO] [stdout] 48 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `knapsack` is never used
[INFO] [stdout]   --> src/branch_and_bound.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn knapsack(items: &[Item], capacity: usize) -> usize {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `branch_and_bound` is never used
[INFO] [stdout]   --> src/branch_and_bound.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn branch_and_bound(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/branch_and_bound.rs:91:4
[INFO] [stdout]    |
[INFO] [stdout] 91 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `knapsack` is never used
[INFO] [stdout]   --> src/monte_carlo.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn knapsack(items: &[Item], capacity: usize, num_samples: usize) -> usize {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/monte_carlo.rs:40:4
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.21s
[INFO] running `Command { std: "docker" "inspect" "e7b5ea94203abb3ae8a90fed268ed1bc3ca834dcf9d308f5eeffe514e7c703f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7b5ea94203abb3ae8a90fed268ed1bc3ca834dcf9d308f5eeffe514e7c703f3", kill_on_drop: false }`
[INFO] [stdout] e7b5ea94203abb3ae8a90fed268ed1bc3ca834dcf9d308f5eeffe514e7c703f3