[INFO] updating cached repository saulshanabrook/graph-computation-play
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/saulshanabrook/graph-computation-play
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/saulshanabrook/graph-computation-play" "work/ex/clippy-test-run/sources/stable/gh/saulshanabrook/graph-computation-play"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/saulshanabrook/graph-computation-play'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/saulshanabrook/graph-computation-play" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/saulshanabrook/graph-computation-play"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/saulshanabrook/graph-computation-play'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b6a782a5be49bfaa372b226ceb59a68e26b6ea61
[INFO] sha for GitHub repo saulshanabrook/graph-computation-play: b6a782a5be49bfaa372b226ceb59a68e26b6ea61
[INFO] validating manifest of saulshanabrook/graph-computation-play on toolchain stable
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of saulshanabrook/graph-computation-play on toolchain stable+rustflags=-Dclippy::into_iter_on_array
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing saulshanabrook/graph-computation-play
[INFO] finished frobbing saulshanabrook/graph-computation-play
[INFO] frobbed toml for saulshanabrook/graph-computation-play written to work/ex/clippy-test-run/sources/stable/gh/saulshanabrook/graph-computation-play/Cargo.toml
[INFO] started frobbing saulshanabrook/graph-computation-play
[INFO] finished frobbing saulshanabrook/graph-computation-play
[INFO] frobbed toml for saulshanabrook/graph-computation-play written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/saulshanabrook/graph-computation-play/Cargo.toml
[INFO] crate saulshanabrook/graph-computation-play has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on the registry index
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] linting saulshanabrook/graph-computation-play against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-2/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/saulshanabrook/graph-computation-play:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+stable" "clippy" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 63a272504c7744e90ea0d9eae7fa3d087cc39b94d5e3d21fe29252f6eec06c69
[INFO] running `"docker" "start" "-a" "63a272504c7744e90ea0d9eae7fa3d087cc39b94d5e3d21fe29252f6eec06c69"`
[INFO] [stderr]     Checking graph-computation-play v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> main.rs:69:9
[INFO] [stderr]    |
[INFO] [stderr] 69 |         genomes: genomes,
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^ help: replace it with: `genomes`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> main.rs:69:9
[INFO] [stderr]    |
[INFO] [stderr] 69 |         genomes: genomes,
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^ help: replace it with: `genomes`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     return random_gene.ind_sample(rng);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `random_gene.ind_sample(rng)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> main.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     return genome;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^ help: remove `return` as shown: `genome`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> main.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     return genome.into_iter().sum();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `genome.into_iter().sum()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> main.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 |     return genome;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^ help: remove `return` as shown: `genome`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> main.rs:48:5
[INFO] [stderr]    |
[INFO] [stderr] 48 |     return genome_a;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^ help: remove `return` as shown: `genome_a`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> main.rs:60:5
[INFO] [stderr]    |
[INFO] [stderr] 60 |     return es;
[INFO] [stderr]    |     ^^^^^^^^^^ help: remove `return` as shown: `es`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> main.rs:68:5
[INFO] [stderr]    |
[INFO] [stderr] 68 | /     return Population {
[INFO] [stderr] 69 | |         genomes: genomes,
[INFO] [stderr] 70 | |         errors: errors_from_genomes(genomes),
[INFO] [stderr] 71 | |     };
[INFO] [stderr]    | |______^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 68 |     Population {
[INFO] [stderr] 69 |         genomes: genomes,
[INFO] [stderr] 70 |         errors: errors_from_genomes(genomes),
[INFO] [stderr] 71 |     }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> main.rs:79:5
[INFO] [stderr]    |
[INFO] [stderr] 79 |     return population_from_genomes(gs);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `population_from_genomes(gs)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     return random_gene.ind_sample(rng);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `random_gene.ind_sample(rng)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> main.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     return genome;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^ help: remove `return` as shown: `genome`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> main.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     return genome.into_iter().sum();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `genome.into_iter().sum()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> main.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 |     return genome;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^ help: remove `return` as shown: `genome`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> main.rs:48:5
[INFO] [stderr]    |
[INFO] [stderr] 48 |     return genome_a;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^ help: remove `return` as shown: `genome_a`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> main.rs:60:5
[INFO] [stderr]    |
[INFO] [stderr] 60 |     return es;
[INFO] [stderr]    |     ^^^^^^^^^^ help: remove `return` as shown: `es`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> main.rs:68:5
[INFO] [stderr]    |
[INFO] [stderr] 68 | /     return Population {
[INFO] [stderr] 69 | |         genomes: genomes,
[INFO] [stderr] 70 | |         errors: errors_from_genomes(genomes),
[INFO] [stderr] 71 | |     };
[INFO] [stderr]    | |______^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 68 |     Population {
[INFO] [stderr] 69 |         genomes: genomes,
[INFO] [stderr] 70 |         errors: errors_from_genomes(genomes),
[INFO] [stderr] 71 |     }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> main.rs:79:5
[INFO] [stderr]    |
[INFO] [stderr] 79 |     return population_from_genomes(gs);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `population_from_genomes(gs)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `POP_SIZE`
[INFO] [stderr]   --> main.rs:51:1
[INFO] [stderr]    |
[INFO] [stderr] 51 | const POP_SIZE: usize = 100;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Genomes`
[INFO] [stderr]   --> main.rs:52:1
[INFO] [stderr]    |
[INFO] [stderr] 52 | type Genomes = [Genome; POP_SIZE];
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Errors`
[INFO] [stderr]   --> main.rs:53:1
[INFO] [stderr]    |
[INFO] [stderr] 53 | type Errors = [Error; POP_SIZE];
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `errors_from_genomes`
[INFO] [stderr]   --> main.rs:55:1
[INFO] [stderr]    |
[INFO] [stderr] 55 | fn errors_from_genomes(genomes: Genomes) -> Errors {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Population`
[INFO] [stderr]   --> main.rs:62:1
[INFO] [stderr]    |
[INFO] [stderr] 62 | struct Population {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `population_from_genomes`
[INFO] [stderr]   --> main.rs:67:1
[INFO] [stderr]    |
[INFO] [stderr] 67 | fn population_from_genomes(genomes: Genomes) -> Population {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `initial_population`
[INFO] [stderr]   --> main.rs:74:1
[INFO] [stderr]    |
[INFO] [stderr] 74 | fn initial_population<R: Rng>(random_gene: &Range<Gene>, rng: &mut R) -> Population {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> main.rs:11:34
[INFO] [stderr]    |
[INFO] [stderr] 11 | fn new_gene<R: Rng>(random_gene: &Range<Gene>, rng: &mut R) -> Gene {
[INFO] [stderr]    |                                  ^^^^^^^^^^^^ help: consider passing by value instead: `Range<Gene>`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::trivially_copy_pass_by_ref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> main.rs:15:36
[INFO] [stderr]    |
[INFO] [stderr] 15 | fn new_genome<R: Rng>(random_gene: &Range<Gene>, rng: &mut R) -> Genome {
[INFO] [stderr]    |                                    ^^^^^^^^^^^^ help: consider passing by value instead: `Range<Gene>`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is only used to index `genome`.
[INFO] [stderr]   --> main.rs:17:14
[INFO] [stderr]    |
[INFO] [stderr] 17 |     for i in 0..L {
[INFO] [stderr]    |              ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_range_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]    |
[INFO] [stderr] 17 |     for <item> in genome.iter_mut().take(L) {
[INFO] [stderr]    |         ^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: this .into_iter() call is equivalent to .iter() and will not move the slice
[INFO] [stderr]   --> main.rs:24:19
[INFO] [stderr]    |
[INFO] [stderr] 24 |     return genome.into_iter().sum();
[INFO] [stderr]    |                   ^^^^^^^^^ help: call directly: `iter`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::into_iter_on_ref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#into_iter_on_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> main.rs:29:18
[INFO] [stderr]    |
[INFO] [stderr] 29 |     random_gene: &Range<Gene>,
[INFO] [stderr]    |                  ^^^^^^^^^^^^ help: consider passing by value instead: `Range<Gene>`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: it looks like you're manually copying between slices
[INFO] [stderr]   --> main.rs:45:14
[INFO] [stderr]    |
[INFO] [stderr] 45 |     for i in 0..crossover_point {
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^ help: try replacing the loop by: `genome_a[..crossover_point].clone_from_slice(&genome_b[..crossover_point])`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::manual_memcpy)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_memcpy
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> main.rs:74:44
[INFO] [stderr]    |
[INFO] [stderr] 74 | fn initial_population<R: Rng>(random_gene: &Range<Gene>, rng: &mut R) -> Population {
[INFO] [stderr]    |                                            ^^^^^^^^^^^^ help: consider passing by value instead: `Range<Gene>`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is only used to index `gs`.
[INFO] [stderr]   --> main.rs:76:14
[INFO] [stderr]    |
[INFO] [stderr] 76 |     for i in 0..L {
[INFO] [stderr]    |              ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]    |
[INFO] [stderr] 76 |     for <item> in gs.iter_mut().take(L) {
[INFO] [stderr]    |         ^^^^^^    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `POP_SIZE`
[INFO] [stderr]   --> main.rs:51:1
[INFO] [stderr]    |
[INFO] [stderr] 51 | const POP_SIZE: usize = 100;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Genomes`
[INFO] [stderr]   --> main.rs:52:1
[INFO] [stderr]    |
[INFO] [stderr] 52 | type Genomes = [Genome; POP_SIZE];
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Errors`
[INFO] [stderr]   --> main.rs:53:1
[INFO] [stderr]    |
[INFO] [stderr] 53 | type Errors = [Error; POP_SIZE];
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `errors_from_genomes`
[INFO] [stderr]   --> main.rs:55:1
[INFO] [stderr]    |
[INFO] [stderr] 55 | fn errors_from_genomes(genomes: Genomes) -> Errors {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Population`
[INFO] [stderr]   --> main.rs:62:1
[INFO] [stderr]    |
[INFO] [stderr] 62 | struct Population {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `population_from_genomes`
[INFO] [stderr]   --> main.rs:67:1
[INFO] [stderr]    |
[INFO] [stderr] 67 | fn population_from_genomes(genomes: Genomes) -> Population {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `initial_population`
[INFO] [stderr]   --> main.rs:74:1
[INFO] [stderr]    |
[INFO] [stderr] 74 | fn initial_population<R: Rng>(random_gene: &Range<Gene>, rng: &mut R) -> Population {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> main.rs:11:34
[INFO] [stderr]    |
[INFO] [stderr] 11 | fn new_gene<R: Rng>(random_gene: &Range<Gene>, rng: &mut R) -> Gene {
[INFO] [stderr]    |                                  ^^^^^^^^^^^^ help: consider passing by value instead: `Range<Gene>`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::trivially_copy_pass_by_ref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> main.rs:15:36
[INFO] [stderr]    |
[INFO] [stderr] 15 | fn new_genome<R: Rng>(random_gene: &Range<Gene>, rng: &mut R) -> Genome {
[INFO] [stderr]    |                                    ^^^^^^^^^^^^ help: consider passing by value instead: `Range<Gene>`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is only used to index `genome`.
[INFO] [stderr]   --> main.rs:17:14
[INFO] [stderr]    |
[INFO] [stderr] 17 |     for i in 0..L {
[INFO] [stderr]    |              ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_range_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]    |
[INFO] [stderr] 17 |     for <item> in genome.iter_mut().take(L) {
[INFO] [stderr]    |         ^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: this .into_iter() call is equivalent to .iter() and will not move the slice
[INFO] [stderr]   --> main.rs:24:19
[INFO] [stderr]    |
[INFO] [stderr] 24 |     return genome.into_iter().sum();
[INFO] [stderr]    |                   ^^^^^^^^^ help: call directly: `iter`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::into_iter_on_ref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#into_iter_on_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> main.rs:29:18
[INFO] [stderr]    |
[INFO] [stderr] 29 |     random_gene: &Range<Gene>,
[INFO] [stderr]    |                  ^^^^^^^^^^^^ help: consider passing by value instead: `Range<Gene>`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: it looks like you're manually copying between slices
[INFO] [stderr]   --> main.rs:45:14
[INFO] [stderr]    |
[INFO] [stderr] 45 |     for i in 0..crossover_point {
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^ help: try replacing the loop by: `genome_a[..crossover_point].clone_from_slice(&genome_b[..crossover_point])`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::manual_memcpy)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_memcpy
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> main.rs:74:44
[INFO] [stderr]    |
[INFO] [stderr] 74 | fn initial_population<R: Rng>(random_gene: &Range<Gene>, rng: &mut R) -> Population {
[INFO] [stderr]    |                                            ^^^^^^^^^^^^ help: consider passing by value instead: `Range<Gene>`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is only used to index `gs`.
[INFO] [stderr]   --> main.rs:76:14
[INFO] [stderr]    |
[INFO] [stderr] 76 |     for i in 0..L {
[INFO] [stderr]    |              ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]    |
[INFO] [stderr] 76 |     for <item> in gs.iter_mut().take(L) {
[INFO] [stderr]    |         ^^^^^^    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.85s
[INFO] running `"docker" "inspect" "63a272504c7744e90ea0d9eae7fa3d087cc39b94d5e3d21fe29252f6eec06c69"`
[INFO] running `"docker" "rm" "-f" "63a272504c7744e90ea0d9eae7fa3d087cc39b94d5e3d21fe29252f6eec06c69"`
[INFO] [stdout] 63a272504c7744e90ea0d9eae7fa3d087cc39b94d5e3d21fe29252f6eec06c69