[INFO] updating cached repository https://github.com/orglofch/neat-rust
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 778545c1d29792db6aac2236bca0d8335beb3a86
[INFO] checking orglofch/neat-rust against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Forglofch%2Fneat-rust" "/workspace/builds/worker-6/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/orglofch/neat-rust on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/orglofch/neat-rust
[INFO] finished tweaking git repo https://github.com/orglofch/neat-rust
[INFO] tweaked toml for git repo https://github.com/orglofch/neat-rust written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/orglofch/neat-rust already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 43bd690d026dde0735028441b97d4c6363843214011aa7a412ad70313652e355
[INFO] running `"docker" "start" "-a" "43bd690d026dde0735028441b97d4c6363843214011aa7a412ad70313652e355"`
[INFO] [stderr]     Checking libc v0.2.33
[INFO] [stderr]     Checking rand v0.5.3
[INFO] [stderr]     Checking neat-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused imports: `GenomeConfig`, `Genome`
[INFO] [stderr]  --> src/speciation.rs:3:14
[INFO] [stderr]   |
[INFO] [stderr] 3 | use genome::{Genome, GenomeConfig, Population};
[INFO] [stderr]   |              ^^^^^^  ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `new_species_size`
[INFO] [stderr]    --> src/config.rs:102:21
[INFO] [stderr]     |
[INFO] [stderr] 102 |                 let new_species_size = population.len() as f32 * species_fitness_by_proto_id.get(&proto_id).unwrap() /
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_species_size`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rng`
[INFO] [stderr]    --> src/genome.rs:604:46
[INFO] [stderr]     |
[INFO] [stderr] 604 |     fn mutate_remove_node<R: Rng>(&mut self, rng: &mut R) {
[INFO] [stderr]     |                                              ^^^ help: if this is intentional, prefix it with an underscore: `_rng`
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `EPSILON`
[INFO] [stderr]  --> src/activation.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | const EPSILON: f32 = 1e-7;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `eval`
[INFO] [stderr]   --> src/activation.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     pub(crate) fn eval(&self, val: f32) -> f32 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sigmoid_activation`
[INFO] [stderr]   --> src/activation.rs:52:4
[INFO] [stderr]    |
[INFO] [stderr] 52 | fn sigmoid_activation(val: f32) -> f32 {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `tanh_activation`
[INFO] [stderr]   --> src/activation.rs:57:4
[INFO] [stderr]    |
[INFO] [stderr] 57 | fn tanh_activation(val: f32) -> f32 {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sin_activation`
[INFO] [stderr]   --> src/activation.rs:62:4
[INFO] [stderr]    |
[INFO] [stderr] 62 | fn sin_activation(val: f32) -> f32 {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `gauss_activation`
[INFO] [stderr]   --> src/activation.rs:67:4
[INFO] [stderr]    |
[INFO] [stderr] 67 | fn gauss_activation(val: f32) -> f32 {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `relu_activation`
[INFO] [stderr]   --> src/activation.rs:72:4
[INFO] [stderr]    |
[INFO] [stderr] 72 | fn relu_activation(val: f32) -> f32 {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `softplus_activation`
[INFO] [stderr]   --> src/activation.rs:77:4
[INFO] [stderr]    |
[INFO] [stderr] 77 | fn softplus_activation(val: f32) -> f32 {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `identity_activation`
[INFO] [stderr]   --> src/activation.rs:82:4
[INFO] [stderr]    |
[INFO] [stderr] 82 | fn identity_activation(val: f32) -> f32 {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `clamped_activation`
[INFO] [stderr]   --> src/activation.rs:87:4
[INFO] [stderr]    |
[INFO] [stderr] 87 | fn clamped_activation(val: f32) -> f32 {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `inv_activation`
[INFO] [stderr]   --> src/activation.rs:92:4
[INFO] [stderr]    |
[INFO] [stderr] 92 | fn inv_activation(val: f32) -> f32 {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `ln_activation`
[INFO] [stderr]   --> src/activation.rs:98:4
[INFO] [stderr]    |
[INFO] [stderr] 98 | fn ln_activation(val: f32) -> f32 {
[INFO] [stderr]    |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `exp_activation`
[INFO] [stderr]    --> src/activation.rs:103:4
[INFO] [stderr]     |
[INFO] [stderr] 103 | fn exp_activation(val: f32) -> f32 {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `abs_activation`
[INFO] [stderr]    --> src/activation.rs:108:4
[INFO] [stderr]     |
[INFO] [stderr] 108 | fn abs_activation(val: f32) -> f32 {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `hat_activation`
[INFO] [stderr]    --> src/activation.rs:113:4
[INFO] [stderr]     |
[INFO] [stderr] 113 | fn hat_activation(val: f32) -> f32 {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `square_activation`
[INFO] [stderr]    --> src/activation.rs:118:4
[INFO] [stderr]     |
[INFO] [stderr] 118 | fn square_activation(val: f32) -> f32 {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `cube_activation`
[INFO] [stderr]    --> src/activation.rs:123:4
[INFO] [stderr]     |
[INFO] [stderr] 123 | fn cube_activation(val: f32) -> f32 {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sinc_activation`
[INFO] [stderr]    --> src/activation.rs:128:4
[INFO] [stderr]     |
[INFO] [stderr] 128 | fn sinc_activation(val: f32) -> f32 {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `aggregate`
[INFO] [stderr]   --> src/aggregation.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     pub(crate) fn aggregate(&self, values: Vec<f32>) -> f32 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sum_aggregation`
[INFO] [stderr]   --> src/aggregation.rs:29:4
[INFO] [stderr]    |
[INFO] [stderr] 29 | fn sum_aggregation(values: Vec<f32>) -> f32 {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `product_aggregation`
[INFO] [stderr]   --> src/aggregation.rs:34:4
[INFO] [stderr]    |
[INFO] [stderr] 34 | fn product_aggregation(values: Vec<f32>) -> f32 {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `max_aggregation`
[INFO] [stderr]   --> src/aggregation.rs:39:4
[INFO] [stderr]    |
[INFO] [stderr] 39 | fn max_aggregation(values: Vec<f32>) -> f32 {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `min_aggregation`
[INFO] [stderr]   --> src/aggregation.rs:44:4
[INFO] [stderr]    |
[INFO] [stderr] 44 | fn min_aggregation(values: Vec<f32>) -> f32 {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `abs_max_aggregation`
[INFO] [stderr]   --> src/aggregation.rs:49:4
[INFO] [stderr]    |
[INFO] [stderr] 49 | fn abs_max_aggregation(values: Vec<f32>) -> f32 {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `median_aggregation`
[INFO] [stderr]   --> src/aggregation.rs:54:4
[INFO] [stderr]    |
[INFO] [stderr] 54 | fn median_aggregation(values: Vec<f32>) -> f32 {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `mean_aggregation`
[INFO] [stderr]   --> src/aggregation.rs:69:4
[INFO] [stderr]    |
[INFO] [stderr] 69 | fn mean_aggregation(values: Vec<f32>) -> f32 {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `activate`
[INFO] [stderr]   --> src/gene.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub(crate) fn activate(&self, values: &Vec<f32>) -> f32 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `crossover`
[INFO] [stderr]   --> src/gene.rs:49:5
[INFO] [stderr]    |
[INFO] [stderr] 49 |     pub(crate) fn crossover(&self, other: &NodeGene) -> NodeGene {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `activate`
[INFO] [stderr]   --> src/gene.rs:90:5
[INFO] [stderr]    |
[INFO] [stderr] 90 |     pub(crate) fn activate(&self, value: f32) -> f32 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `crossover`
[INFO] [stderr]   --> src/gene.rs:95:5
[INFO] [stderr]    |
[INFO] [stderr] 95 |     pub(crate) fn crossover(&self, other: &ConnectionGene) -> ConnectionGene {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `activate`
[INFO] [stderr]    --> src/genome.rs:187:5
[INFO] [stderr]     |
[INFO] [stderr] 187 |     pub(crate) fn activate(&self, inputs: &HashMap<&'a str, f32>) -> HashMap<&'a str, f32> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `crossover`
[INFO] [stderr]    --> src/genome.rs:367:5
[INFO] [stderr]     |
[INFO] [stderr] 367 |     pub(crate) fn crossover(&self, other: &Genome, genome_config: &mut GenomeConfig) -> Genome {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `mutate_remove_connection`
[INFO] [stderr]    --> src/genome.rs:536:5
[INFO] [stderr]     |
[INFO] [stderr] 536 |     fn mutate_remove_connection<R: Rng>(&mut self, rng: &mut R) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `mutate_remove_node`
[INFO] [stderr]    --> src/genome.rs:604:5
[INFO] [stderr]     |
[INFO] [stderr] 604 |     fn mutate_remove_node<R: Rng>(&mut self, rng: &mut R) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 37 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `GenomeConfig`, `Genome`
[INFO] [stderr]  --> src/speciation.rs:3:14
[INFO] [stderr]   |
[INFO] [stderr] 3 | use genome::{Genome, GenomeConfig, Population};
[INFO] [stderr]   |              ^^^^^^  ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `new_species_size`
[INFO] [stderr]    --> src/config.rs:102:21
[INFO] [stderr]     |
[INFO] [stderr] 102 |                 let new_species_size = population.len() as f32 * species_fitness_by_proto_id.get(&proto_id).unwrap() /
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_species_size`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rng`
[INFO] [stderr]    --> src/genome.rs:604:46
[INFO] [stderr]     |
[INFO] [stderr] 604 |     fn mutate_remove_node<R: Rng>(&mut self, rng: &mut R) {
[INFO] [stderr]     |                                              ^^^ help: if this is intentional, prefix it with an underscore: `_rng`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `new_species_size`
[INFO] [stderr]    --> src/config.rs:102:21
[INFO] [stderr]     |
[INFO] [stderr] 102 |                 let new_species_size = population.len() as f32 * species_fitness_by_proto_id.get(&proto_id).unwrap() /
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_species_size`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rng`
[INFO] [stderr]    --> src/genome.rs:604:46
[INFO] [stderr]     |
[INFO] [stderr] 604 |     fn mutate_remove_node<R: Rng>(&mut self, rng: &mut R) {
[INFO] [stderr]     |                                              ^^^ help: if this is intentional, prefix it with an underscore: `_rng`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `crossover`
[INFO] [stderr]   --> src/gene.rs:49:5
[INFO] [stderr]    |
[INFO] [stderr] 49 |     pub(crate) fn crossover(&self, other: &NodeGene) -> NodeGene {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `crossover`
[INFO] [stderr]   --> src/gene.rs:95:5
[INFO] [stderr]    |
[INFO] [stderr] 95 |     pub(crate) fn crossover(&self, other: &ConnectionGene) -> ConnectionGene {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `crossover`
[INFO] [stderr]    --> src/genome.rs:367:5
[INFO] [stderr]     |
[INFO] [stderr] 367 |     pub(crate) fn crossover(&self, other: &Genome, genome_config: &mut GenomeConfig) -> Genome {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `mutate_remove_connection`
[INFO] [stderr]    --> src/genome.rs:536:5
[INFO] [stderr]     |
[INFO] [stderr] 536 |     fn mutate_remove_connection<R: Rng>(&mut self, rng: &mut R) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `mutate_remove_node`
[INFO] [stderr]    --> src/genome.rs:604:5
[INFO] [stderr]     |
[INFO] [stderr] 604 |     fn mutate_remove_node<R: Rng>(&mut self, rng: &mut R) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 8 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `mutate_remove_node`
[INFO] [stderr]    --> src/genome.rs:604:5
[INFO] [stderr]     |
[INFO] [stderr] 604 |     fn mutate_remove_node<R: Rng>(&mut self, rng: &mut R) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `new_species_size`
[INFO] [stderr]    --> src/config.rs:102:21
[INFO] [stderr]     |
[INFO] [stderr] 102 |                 let new_species_size = population.len() as f32 * species_fitness_by_proto_id.get(&proto_id).unwrap() /
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_species_size`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rng`
[INFO] [stderr]    --> src/genome.rs:604:46
[INFO] [stderr]     |
[INFO] [stderr] 604 |     fn mutate_remove_node<R: Rng>(&mut self, rng: &mut R) {
[INFO] [stderr]     |                                              ^^^ help: if this is intentional, prefix it with an underscore: `_rng`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `mutate_remove_node`
[INFO] [stderr]    --> src/genome.rs:604:5
[INFO] [stderr]     |
[INFO] [stderr] 604 |     fn mutate_remove_node<R: Rng>(&mut self, rng: &mut R) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.56s
[INFO] running `"docker" "inspect" "43bd690d026dde0735028441b97d4c6363843214011aa7a412ad70313652e355"`
[INFO] running `"docker" "rm" "-f" "43bd690d026dde0735028441b97d4c6363843214011aa7a412ad70313652e355"`
[INFO] [stdout] 43bd690d026dde0735028441b97d4c6363843214011aa7a412ad70313652e355