[INFO] cloning repository https://github.com/yabirgb/woa-clustering
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yabirgb/woa-clustering" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyabirgb%2Fwoa-clustering", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyabirgb%2Fwoa-clustering'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dc71722a7fa2530e9bc666459e4dcc6fdaeaec1f
[INFO] checking yabirgb/woa-clustering against master#5518eaa946291f00471af8b254b2a1715f234882 for pr-120393
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyabirgb%2Fwoa-clustering" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/yabirgb/woa-clustering on toolchain 5518eaa946291f00471af8b254b2a1715f234882
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/yabirgb/woa-clustering
[INFO] finished tweaking git repo https://github.com/yabirgb/woa-clustering
[INFO] tweaked toml for git repo https://github.com/yabirgb/woa-clustering written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/yabirgb/woa-clustering 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" "+5518eaa946291f00471af8b254b2a1715f234882" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "+5518eaa946291f00471af8b254b2a1715f234882" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 61d2ad8db207ce18af94b91770875e1a54a65ead42ed955bd680d39cadb99766
[INFO] running `Command { std: "docker" "start" "-a" "61d2ad8db207ce18af94b91770875e1a54a65ead42ed955bd680d39cadb99766", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "61d2ad8db207ce18af94b91770875e1a54a65ead42ed955bd680d39cadb99766", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61d2ad8db207ce18af94b91770875e1a54a65ead42ed955bd680d39cadb99766", kill_on_drop: false }`
[INFO] [stdout] 61d2ad8db207ce18af94b91770875e1a54a65ead42ed955bd680d39cadb99766
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "+5518eaa946291f00471af8b254b2a1715f234882" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d33dfbc73495577861ad80ccc3771f3eeda06cb96230bbd8407bc31ddb445eb8
[INFO] running `Command { std: "docker" "start" "-a" "d33dfbc73495577861ad80ccc3771f3eeda06cb96230bbd8407bc31ddb445eb8", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling syn v1.0.30
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde v1.0.111
[INFO] [stderr]     Checking ppv-lite86 v0.2.8
[INFO] [stderr]    Compiling quote v1.0.6
[INFO] [stderr]     Checking getrandom v0.1.14
[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]    Compiling serde_derive v1.0.111
[INFO] [stderr]     Checking serde_json v1.0.53
[INFO] [stderr]     Checking woa-classification v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::io::Write`
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::io::Write;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::OpenOptions`
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::fs::OpenOptions;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Write`
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::io::Write;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::OpenOptions`
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::fs::OpenOptions;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/woa/algorithm.rs:80:13
[INFO] [stdout]    |
[INFO] [stdout] 80 |         for i in 0..k{
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/woa/algorithm.rs:80:13
[INFO] [stdout]    |
[INFO] [stdout] 80 |         for i in 0..k{
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `step_scores`
[INFO] [stdout]    --> src/woa/algorithm.rs:353:47
[INFO] [stdout]     |
[INFO] [stdout] 353 |         let (best_whale_id, best_whale_score, step_scores) = find_best_whale(&whale_solutions, data, rest, k, l, &mut current_evaluations);
[INFO] [stdout]     |                                               ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_step_scores`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `step_scores`
[INFO] [stdout]    --> src/woa/algorithm.rs:353:47
[INFO] [stdout]     |
[INFO] [stdout] 353 |         let (best_whale_id, best_whale_score, step_scores) = find_best_whale(&whale_solutions, data, rest, k, l, &mut current_evaluations);
[INFO] [stdout]     |                                               ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_step_scores`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/woa/algorithm.rs:520:14
[INFO] [stdout]     |
[INFO] [stdout] 520 | ...   let (mut best_whale_id, mut best_whale_score, step_scores) = find_best_whale(&whale_solutions, data, rest, k, l, &mut current_evalu...
[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: unused variable: `best_whale`
[INFO] [stdout]    --> src/woa/algorithm.rs:725:13
[INFO] [stdout]     |
[INFO] [stdout] 725 |         let best_whale = whales[best_whale_id].clone();
[INFO] [stdout]     |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_best_whale`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/woa/algorithm.rs:520:14
[INFO] [stdout]     |
[INFO] [stdout] 520 | ...   let (mut best_whale_id, mut best_whale_score, step_scores) = find_best_whale(&whale_solutions, data, rest, k, l, &mut current_evalu...
[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: unused variable: `best_whale`
[INFO] [stdout]    --> src/woa/algorithm.rs:725:13
[INFO] [stdout]     |
[INFO] [stdout] 725 |         let best_whale = whales[best_whale_id].clone();
[INFO] [stdout]     |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_best_whale`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `MAX_LS_EVALS`
[INFO] [stdout]    --> src/woa/algorithm.rs:861:9
[INFO] [stdout]     |
[INFO] [stdout] 861 |     let MAX_LS_EVALS:usize = 2500;
[INFO] [stdout]     |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_MAX_LS_EVALS`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `best_whale`
[INFO] [stdout]    --> src/woa/algorithm.rs:940:13
[INFO] [stdout]     |
[INFO] [stdout] 940 |         let best_whale = whales[best_whale_id].clone();
[INFO] [stdout]     |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_best_whale`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `best_whale_id`
[INFO] [stdout]     --> src/woa/algorithm.rs:1093:18
[INFO] [stdout]      |
[INFO] [stdout] 1093 | ...   let (best_whale_id, mut best_whale_score, step_scores) = find_best_whale(&whale_solutions, data, rest, k, l, &mut current_evaluatio...
[INFO] [stdout]      |            ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_best_whale_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `best_whale_score`
[INFO] [stdout]     --> src/woa/algorithm.rs:1093:37
[INFO] [stdout]      |
[INFO] [stdout] 1093 | ...   let (best_whale_id, mut best_whale_score, step_scores) = find_best_whale(&whale_solutions, data, rest, k, l, &mut current_evaluatio...
[INFO] [stdout]      |                               ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_best_whale_score`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `step_scores`
[INFO] [stdout]     --> src/woa/algorithm.rs:1093:55
[INFO] [stdout]      |
[INFO] [stdout] 1093 | ...   let (best_whale_id, mut best_whale_score, step_scores) = find_best_whale(&whale_solutions, data, rest, k, l, &mut current_evaluatio...
[INFO] [stdout]      |                                                 ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_step_scores`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `MAX_LS_EVALS`
[INFO] [stdout]    --> src/woa/algorithm.rs:861:9
[INFO] [stdout]     |
[INFO] [stdout] 861 |     let MAX_LS_EVALS:usize = 2500;
[INFO] [stdout]     |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_MAX_LS_EVALS`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `best_whale`
[INFO] [stdout]    --> src/woa/algorithm.rs:940:13
[INFO] [stdout]     |
[INFO] [stdout] 940 |         let best_whale = whales[best_whale_id].clone();
[INFO] [stdout]     |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_best_whale`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `best_whale_id`
[INFO] [stdout]     --> src/woa/algorithm.rs:1093:18
[INFO] [stdout]      |
[INFO] [stdout] 1093 | ...   let (best_whale_id, mut best_whale_score, step_scores) = find_best_whale(&whale_solutions, data, rest, k, l, &mut current_evaluatio...
[INFO] [stdout]      |            ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_best_whale_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `best_whale_score`
[INFO] [stdout]     --> src/woa/algorithm.rs:1093:37
[INFO] [stdout]      |
[INFO] [stdout] 1093 | ...   let (best_whale_id, mut best_whale_score, step_scores) = find_best_whale(&whale_solutions, data, rest, k, l, &mut current_evaluatio...
[INFO] [stdout]      |                               ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_best_whale_score`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `step_scores`
[INFO] [stdout]     --> src/woa/algorithm.rs:1093:55
[INFO] [stdout]      |
[INFO] [stdout] 1093 | ...   let (best_whale_id, mut best_whale_score, step_scores) = find_best_whale(&whale_solutions, data, rest, k, l, &mut current_evaluatio...
[INFO] [stdout]      |                                                 ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_step_scores`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/woa/algorithm.rs:935:29
[INFO] [stdout]     |
[INFO] [stdout] 935 | ...   let (best_whale_id, mut best_whale_score, step_scores) = find_best_whale(&whale_solutions, data, rest, k, l, &mut current_evaluatio...
[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/woa/algorithm.rs:1013:25
[INFO] [stdout]      |
[INFO] [stdout] 1013 |                     let mut whale_selected:usize = rng.gen_range(0, whales.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/woa/algorithm.rs:1037:25
[INFO] [stdout]      |
[INFO] [stdout] 1037 |                     let mut whale_selected:usize = rng.gen_range(0, whales.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/woa/algorithm.rs:1093:33
[INFO] [stdout]      |
[INFO] [stdout] 1093 | ...   let (best_whale_id, mut best_whale_score, step_scores) = find_best_whale(&whale_solutions, data, rest, k, l, &mut current_evaluatio...
[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/woa/algorithm.rs:935:29
[INFO] [stdout]     |
[INFO] [stdout] 935 | ...   let (best_whale_id, mut best_whale_score, step_scores) = find_best_whale(&whale_solutions, data, rest, k, l, &mut current_evaluatio...
[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/woa/algorithm.rs:1013:25
[INFO] [stdout]      |
[INFO] [stdout] 1013 |                     let mut whale_selected:usize = rng.gen_range(0, whales.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/woa/algorithm.rs:1037:25
[INFO] [stdout]      |
[INFO] [stdout] 1037 |                     let mut whale_selected:usize = rng.gen_range(0, whales.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/woa/algorithm.rs:1093:33
[INFO] [stdout]      |
[INFO] [stdout] 1093 | ...   let (best_whale_id, mut best_whale_score, step_scores) = find_best_whale(&whale_solutions, data, rest, k, l, &mut current_evaluatio...
[INFO] [stdout]      |                           ----^^^^^^^^^^^^^^^^
[INFO] [stdout]      |                           |
[INFO] [stdout]      |                           help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `population` is never read
[INFO] [stdout]   --> src/main.rs:40:13
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let mut population: usize = 25;
[INFO] [stdout]    |             ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `population` is never read
[INFO] [stdout]   --> src/main.rs:40:13
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let mut population: usize = 25;
[INFO] [stdout]    |             ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.40s
[INFO] running `Command { std: "docker" "inspect" "d33dfbc73495577861ad80ccc3771f3eeda06cb96230bbd8407bc31ddb445eb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d33dfbc73495577861ad80ccc3771f3eeda06cb96230bbd8407bc31ddb445eb8", kill_on_drop: false }`
[INFO] [stdout] d33dfbc73495577861ad80ccc3771f3eeda06cb96230bbd8407bc31ddb445eb8
