[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 beta-2020-07-24 for pr-75494-beta
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGregoireLoens%2FGeneticAlgorithm" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/GregoireLoens/GeneticAlgorithm on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-7/source/Cargo.toml
[INFO] crate git repo https://github.com/GregoireLoens/GeneticAlgorithm already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1cdd16d323c88231b951ee6ca608265f71822b27530280dc08d8673570df8ce6
[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" "1cdd16d323c88231b951ee6ca608265f71822b27530280dc08d8673570df8ce6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1cdd16d323c88231b951ee6ca608265f71822b27530280dc08d8673570df8ce6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1cdd16d323c88231b951ee6ca608265f71822b27530280dc08d8673570df8ce6", kill_on_drop: false }`
[INFO] [stdout] 1cdd16d323c88231b951ee6ca608265f71822b27530280dc08d8673570df8ce6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 597eae4e5a13232f5378c3bd5c026f78ddfa4fc331f98429d5ffd914a7be270b
[INFO] running `Command { std: "docker" "start" "-a" "597eae4e5a13232f5378c3bd5c026f78ddfa4fc331f98429d5ffd914a7be270b", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.2
[INFO] [stderr]     Checking tramp v0.3.0
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking GeneticAlgorithm v0.1.0 (/opt/rustwide/workdir)
[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]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `best_child` is never read
[INFO] [stdout]   --> src/main.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let mut best_child = problem::data::IndiData::new();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[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: 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] 
[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: 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)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `GeneticAlgorithm` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `genetic_algorithm`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::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: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[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]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `best_child` is never read
[INFO] [stdout]   --> src/main.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let mut best_child = problem::data::IndiData::new();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[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: 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] 
[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: 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)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `GeneticAlgorithm` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `genetic_algorithm`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::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: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.18s
[INFO] running `Command { std: "docker" "inspect" "597eae4e5a13232f5378c3bd5c026f78ddfa4fc331f98429d5ffd914a7be270b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "597eae4e5a13232f5378c3bd5c026f78ddfa4fc331f98429d5ffd914a7be270b", kill_on_drop: false }`
[INFO] [stdout] 597eae4e5a13232f5378c3bd5c026f78ddfa4fc331f98429d5ffd914a7be270b
