[INFO] cloning repository https://github.com/GregoireLoens/GeneticAlgorithm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/GregoireLoens/GeneticAlgorithm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGregoireLoens%2FGeneticAlgorithm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGregoireLoens%2FGeneticAlgorithm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7b26d886e591820ecdacd0898ab9d3b308aabeef
[INFO] checking GregoireLoens/GeneticAlgorithm against try#b946edaa85de45f124065f52b1bc55ba2fb4f9fb for pr-157562
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGregoireLoens%2FGeneticAlgorithm" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/GregoireLoens/GeneticAlgorithm
[INFO] finished tweaking git repo https://github.com/GregoireLoens/GeneticAlgorithm
[INFO] tweaked toml for git repo https://github.com/GregoireLoens/GeneticAlgorithm written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/GregoireLoens/GeneticAlgorithm on toolchain b946edaa85de45f124065f52b1bc55ba2fb4f9fb
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b946edaa85de45f124065f52b1bc55ba2fb4f9fb" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/GregoireLoens/GeneticAlgorithm 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" "+b946edaa85de45f124065f52b1bc55ba2fb4f9fb" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3e793bdf10248eb2ddbd6b0faebed8155c11b4589982e2893733958d93e8d540" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 1cdf6a1b8be796903b73581d4ad04bb03b79fe7d6e80e35f4372f0cf86c70a5d
[INFO] running `Command { std: "docker" "start" "1cdf6a1b8be796903b73581d4ad04bb03b79fe7d6e80e35f4372f0cf86c70a5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "1cdf6a1b8be796903b73581d4ad04bb03b79fe7d6e80e35f4372f0cf86c70a5d" "/opt/rustwide/cargo-home/bin/cargo" "+b946edaa85de45f124065f52b1bc55ba2fb4f9fb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1cdf6a1b8be796903b73581d4ad04bb03b79fe7d6e80e35f4372f0cf86c70a5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "1cdf6a1b8be796903b73581d4ad04bb03b79fe7d6e80e35f4372f0cf86c70a5d" "/opt/rustwide/cargo-home/bin/cargo" "+b946edaa85de45f124065f52b1bc55ba2fb4f9fb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking tramp v0.3.0
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking GeneticAlgorithm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/problem/selection.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     for i in 0..nb_turn {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `win1`
[INFO] [stdout]   --> src/problem/selection.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |     let win1: usize;
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_win1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `win2`
[INFO] [stdout]   --> src/problem/selection.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let win2: usize;
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_win2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/problem/selection.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |     for i in 0..t_size {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/problem/crossover.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |     for i in 0..k {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]   --> src/problem/mutation.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let mut index: usize;
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/main.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     for i in 0..parent.pop.len() / 2 {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:52:33
[INFO] [stdout]    |
[INFO] [stdout] 52 |             let (mut new_parent,mut new_data, clone_tx)
[INFO] [stdout]    |                                 ----^^^^^^^^
[INFO] [stdout]    |                                 |
[INFO] [stdout]    |                                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `it`
[INFO] [stdout]   --> src/main.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 50 |     for it in 0..problem::data::MAXIT {
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_it`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `new_data`
[INFO] [stdout]   --> src/main.rs:52:33
[INFO] [stdout]    |
[INFO] [stdout] 52 |             let (mut new_parent,mut new_data, clone_tx)
[INFO] [stdout]    |                                 ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `best_child` is never read
[INFO] [stdout]   --> src/main.rs:35:26
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let mut best_child = problem::data::IndiData::new();
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 64 |         best_child = child[best].clone();
[INFO] [stdout]    |         ---------- `best_child` is overwritten here before the previous value is read
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:56:17
[INFO] [stdout]    |
[INFO] [stdout] 56 |                 clone_tx.send(generate_child(&mut new_parent, &mut new_data));
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 56 |                 let _ = clone_tx.send(generate_child(&mut new_parent, &mut new_data));
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/problem/selection.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     for i in 0..nb_turn {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `win1`
[INFO] [stdout]   --> src/problem/selection.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |     let win1: usize;
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_win1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `win2`
[INFO] [stdout]   --> src/problem/selection.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let win2: usize;
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_win2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/problem/selection.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |     for i in 0..t_size {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/problem/crossover.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |     for i in 0..k {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]   --> src/problem/mutation.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let mut index: usize;
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/main.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     for i in 0..parent.pop.len() / 2 {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:52:33
[INFO] [stdout]    |
[INFO] [stdout] 52 |             let (mut new_parent,mut new_data, clone_tx)
[INFO] [stdout]    |                                 ----^^^^^^^^
[INFO] [stdout]    |                                 |
[INFO] [stdout]    |                                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `it`
[INFO] [stdout]   --> src/main.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 50 |     for it in 0..problem::data::MAXIT {
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_it`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `new_data`
[INFO] [stdout]   --> src/main.rs:52:33
[INFO] [stdout]    |
[INFO] [stdout] 52 |             let (mut new_parent,mut new_data, clone_tx)
[INFO] [stdout]    |                                 ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `best_child` is never read
[INFO] [stdout]   --> src/main.rs:35:26
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let mut best_child = problem::data::IndiData::new();
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 64 |         best_child = child[best].clone();
[INFO] [stdout]    |         ---------- `best_child` is overwritten here before the previous value is read
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:56:17
[INFO] [stdout]    |
[INFO] [stdout] 56 |                 clone_tx.send(generate_child(&mut new_parent, &mut new_data));
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 56 |                 let _ = clone_tx.send(generate_child(&mut new_parent, &mut new_data));
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.32s
[INFO] running `Command { std: "docker" "inspect" "1cdf6a1b8be796903b73581d4ad04bb03b79fe7d6e80e35f4372f0cf86c70a5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1cdf6a1b8be796903b73581d4ad04bb03b79fe7d6e80e35f4372f0cf86c70a5d", kill_on_drop: false }`
[INFO] [stdout] 1cdf6a1b8be796903b73581d4ad04bb03b79fe7d6e80e35f4372f0cf86c70a5d
