[INFO] cloning repository https://github.com/michabay05/nqueens
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/michabay05/nqueens" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmichabay05%2Fnqueens", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmichabay05%2Fnqueens'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a0d970704503fc129a76f91189a13e6c3a47e31f
[INFO] testing michabay05/nqueens against 1.95.0 for beta-1.96-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmichabay05%2Fnqueens" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/michabay05/nqueens
[INFO] finished tweaking git repo https://github.com/michabay05/nqueens
[INFO] tweaked toml for git repo https://github.com/michabay05/nqueens written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/michabay05/nqueens on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/michabay05/nqueens 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" "+1.95.0" "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-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5ef6642a23a0e22797c6652211698519bdad2da3473dfc7b02a10121175fa3c6
[INFO] running `Command { std: "docker" "start" "-a" "5ef6642a23a0e22797c6652211698519bdad2da3473dfc7b02a10121175fa3c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5ef6642a23a0e22797c6652211698519bdad2da3473dfc7b02a10121175fa3c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ef6642a23a0e22797c6652211698519bdad2da3473dfc7b02a10121175fa3c6", kill_on_drop: false }`
[INFO] [stdout] 5ef6642a23a0e22797c6652211698519bdad2da3473dfc7b02a10121175fa3c6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fcb6e2c236c12a65acda07284c89315dd27b5faaa3a0a94bdcba002043152edc
[INFO] running `Command { std: "docker" "start" "-a" "fcb6e2c236c12a65acda07284c89315dd27b5faaa3a0a94bdcba002043152edc", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling getrandom v0.2.8
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling nqueens v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `r` is never read
[INFO] [stdout]   --> src/attack.rs:44:21
[INFO] [stdout]    |
[INFO] [stdout] 44 |     let mut r: i8 = start_row;
[INFO] [stdout]    |                     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `c` is never read
[INFO] [stdout]   --> src/attack.rs:45:21
[INFO] [stdout]    |
[INFO] [stdout] 45 |     let mut c: i8 = start_col;
[INFO] [stdout]    |                     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `r` is never read
[INFO] [stdout]    --> src/attack.rs:101:21
[INFO] [stdout]     |
[INFO] [stdout] 101 |     let mut r: i8 = start_row;
[INFO] [stdout]     |                     ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `c` is never read
[INFO] [stdout]    --> src/attack.rs:102:21
[INFO] [stdout]     |
[INFO] [stdout] 102 |     let mut c: i8 = start_col;
[INFO] [stdout]     |                     ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/population.rs:69:13
[INFO] [stdout]    |
[INFO] [stdout] 69 |         for i in 0..POPULATION_COUNT {
[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: `el`
[INFO] [stdout]    --> src/population.rs:198:17
[INFO] [stdout]     |
[INFO] [stdout] 198 |         for (i, el) in self.elements.iter().enumerate() {
[INFO] [stdout]     |                 ^^ help: if this is intentional, prefix it with an underscore: `_el`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `randomized_new` and `print_genes` are never used
[INFO] [stdout]   --> src/dna.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl DNA {
[INFO] [stdout]    | -------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 25 |     pub fn randomized_new() -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 70 |     pub fn print_genes(&self) {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `mutate_rate` is never read
[INFO] [stdout]   --> src/population.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout]  9 | pub struct Population {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 15 |     mutate_rate: f32,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `print_mating_pool`, `print_mating_pool_count`, `print_elements`, and `print_fitness` are never used
[INFO] [stdout]    --> src/population.rs:191:12
[INFO] [stdout]     |
[INFO] [stdout]  31 | impl Population {
[INFO] [stdout]     | --------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 191 |     pub fn print_mating_pool(&self) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 196 |     pub fn print_mating_pool_count(&self) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 208 |     pub fn print_elements(&self) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 214 |     pub fn print_fitness(&self) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.59s
[INFO] running `Command { std: "docker" "inspect" "fcb6e2c236c12a65acda07284c89315dd27b5faaa3a0a94bdcba002043152edc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fcb6e2c236c12a65acda07284c89315dd27b5faaa3a0a94bdcba002043152edc", kill_on_drop: false }`
[INFO] [stdout] fcb6e2c236c12a65acda07284c89315dd27b5faaa3a0a94bdcba002043152edc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 66bf13f7c8418a116222783b88bee3bde8f4c0ceb7e979246e87da131c5add6a
[INFO] running `Command { std: "docker" "start" "-a" "66bf13f7c8418a116222783b88bee3bde8f4c0ceb7e979246e87da131c5add6a", kill_on_drop: false }`
[INFO] [stderr]    Compiling nqueens v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `r` is never read
[INFO] [stdout]   --> src/attack.rs:44:21
[INFO] [stdout]    |
[INFO] [stdout] 44 |     let mut r: i8 = start_row;
[INFO] [stdout]    |                     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `c` is never read
[INFO] [stdout]   --> src/attack.rs:45:21
[INFO] [stdout]    |
[INFO] [stdout] 45 |     let mut c: i8 = start_col;
[INFO] [stdout]    |                     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `r` is never read
[INFO] [stdout]    --> src/attack.rs:101:21
[INFO] [stdout]     |
[INFO] [stdout] 101 |     let mut r: i8 = start_row;
[INFO] [stdout]     |                     ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `c` is never read
[INFO] [stdout]    --> src/attack.rs:102:21
[INFO] [stdout]     |
[INFO] [stdout] 102 |     let mut c: i8 = start_col;
[INFO] [stdout]     |                     ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/population.rs:69:13
[INFO] [stdout]    |
[INFO] [stdout] 69 |         for i in 0..POPULATION_COUNT {
[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: `el`
[INFO] [stdout]    --> src/population.rs:198:17
[INFO] [stdout]     |
[INFO] [stdout] 198 |         for (i, el) in self.elements.iter().enumerate() {
[INFO] [stdout]     |                 ^^ help: if this is intentional, prefix it with an underscore: `_el`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `randomized_new` and `print_genes` are never used
[INFO] [stdout]   --> src/dna.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl DNA {
[INFO] [stdout]    | -------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 25 |     pub fn randomized_new() -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 70 |     pub fn print_genes(&self) {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `mutate_rate` is never read
[INFO] [stdout]   --> src/population.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout]  9 | pub struct Population {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 15 |     mutate_rate: f32,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `print_mating_pool`, `print_mating_pool_count`, `print_elements`, and `print_fitness` are never used
[INFO] [stdout]    --> src/population.rs:191:12
[INFO] [stdout]     |
[INFO] [stdout]  31 | impl Population {
[INFO] [stdout]     | --------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 191 |     pub fn print_mating_pool(&self) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 196 |     pub fn print_mating_pool_count(&self) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 208 |     pub fn print_elements(&self) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 214 |     pub fn print_fitness(&self) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `Command { std: "docker" "inspect" "66bf13f7c8418a116222783b88bee3bde8f4c0ceb7e979246e87da131c5add6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66bf13f7c8418a116222783b88bee3bde8f4c0ceb7e979246e87da131c5add6a", kill_on_drop: false }`
[INFO] [stdout] 66bf13f7c8418a116222783b88bee3bde8f4c0ceb7e979246e87da131c5add6a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 84017c161f0f0b382389cfe9cd030e5947849215bbdb096ccbff040e23820d5a
[INFO] running `Command { std: "docker" "start" "-a" "84017c161f0f0b382389cfe9cd030e5947849215bbdb096ccbff040e23820d5a", kill_on_drop: false }`
[INFO] [stderr] warning: value assigned to `r` is never read
[INFO] [stderr]   --> src/attack.rs:44:21
[INFO] [stderr]    |
[INFO] [stderr] 44 |     let mut r: i8 = start_row;
[INFO] [stderr]    |                     ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `c` is never read
[INFO] [stderr]   --> src/attack.rs:45:21
[INFO] [stderr]    |
[INFO] [stderr] 45 |     let mut c: i8 = start_col;
[INFO] [stderr]    |                     ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `r` is never read
[INFO] [stderr]    --> src/attack.rs:101:21
[INFO] [stderr]     |
[INFO] [stderr] 101 |     let mut r: i8 = start_row;
[INFO] [stderr]     |                     ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `c` is never read
[INFO] [stderr]    --> src/attack.rs:102:21
[INFO] [stderr]     |
[INFO] [stderr] 102 |     let mut c: i8 = start_col;
[INFO] [stderr]     |                     ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/population.rs:69:13
[INFO] [stderr]    |
[INFO] [stderr] 69 |         for i in 0..POPULATION_COUNT {
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `el`
[INFO] [stderr]    --> src/population.rs:198:17
[INFO] [stderr]     |
[INFO] [stderr] 198 |         for (i, el) in self.elements.iter().enumerate() {
[INFO] [stderr]     |                 ^^ help: if this is intentional, prefix it with an underscore: `_el`
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `randomized_new` and `print_genes` are never used
[INFO] [stderr]   --> src/dna.rs:25:12
[INFO] [stderr]    |
[INFO] [stderr] 14 | impl DNA {
[INFO] [stderr]    | -------- associated items in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 25 |     pub fn randomized_new() -> Self {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 70 |     pub fn print_genes(&self) {
[INFO] [stderr]    |            ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `mutate_rate` is never read
[INFO] [stderr]   --> src/population.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr]  9 | pub struct Population {
[INFO] [stderr]    |            ---------- field in this struct
[INFO] [stderr] ...
[INFO] [stderr] 15 |     mutate_rate: f32,
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: methods `print_mating_pool`, `print_mating_pool_count`, `print_elements`, and `print_fitness` are never used
[INFO] [stderr]    --> src/population.rs:191:12
[INFO] [stderr]     |
[INFO] [stderr]  31 | impl Population {
[INFO] [stderr]     | --------------- methods in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 191 |     pub fn print_mating_pool(&self) {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 196 |     pub fn print_mating_pool_count(&self) {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 208 |     pub fn print_elements(&self) {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 214 |     pub fn print_fitness(&self) {
[INFO] [stderr]     |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `nqueens` (bin "nqueens" test) generated 9 warnings (run `cargo fix --bin "nqueens" -p nqueens --tests` to apply 2 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/nqueens-9da3b61285bba498)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "84017c161f0f0b382389cfe9cd030e5947849215bbdb096ccbff040e23820d5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84017c161f0f0b382389cfe9cd030e5947849215bbdb096ccbff040e23820d5a", kill_on_drop: false }`
[INFO] [stdout] 84017c161f0f0b382389cfe9cd030e5947849215bbdb096ccbff040e23820d5a
