[INFO] updating cached repository schoeppl/take_it_easy
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/schoeppl/take_it_easy
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/schoeppl/take_it_easy" "work/ex/clippy-test-run/sources/stable/gh/schoeppl/take_it_easy"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/schoeppl/take_it_easy'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/schoeppl/take_it_easy" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/schoeppl/take_it_easy"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/schoeppl/take_it_easy'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7914fcd85ea5780938d6ffd2dcc0e005516a236b
[INFO] sha for GitHub repo schoeppl/take_it_easy: 7914fcd85ea5780938d6ffd2dcc0e005516a236b
[INFO] validating manifest of schoeppl/take_it_easy 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 schoeppl/take_it_easy 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 schoeppl/take_it_easy
[INFO] finished frobbing schoeppl/take_it_easy
[INFO] frobbed toml for schoeppl/take_it_easy written to work/ex/clippy-test-run/sources/stable/gh/schoeppl/take_it_easy/Cargo.toml
[INFO] started frobbing schoeppl/take_it_easy
[INFO] finished frobbing schoeppl/take_it_easy
[INFO] frobbed toml for schoeppl/take_it_easy written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/schoeppl/take_it_easy/Cargo.toml
[INFO] crate schoeppl/take_it_easy has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] linting schoeppl/take_it_easy against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-3/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/schoeppl/take_it_easy:/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] 6b87436ea4cfcd73bebb67910cca50164ceefcef155fa984d3195fb99fc4f498
[INFO] running `"docker" "start" "-a" "6b87436ea4cfcd73bebb67910cca50164ceefcef155fa984d3195fb99fc4f498"`
[INFO] [stderr]     Checking term v0.4.6
[INFO] [stderr]    Compiling rustc_version v0.2.2
[INFO] [stderr]    Compiling rustc-test v0.3.0
[INFO] [stderr]     Checking take_it_easy v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: using `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]    --> src/main.rs:177:13
[INFO] [stderr]     |
[INFO] [stderr] 177 |             write!(&mut res, "{} {}\n", format!("{:02}",i), self.tile[i]).unwrap();
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::write_with_newline)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: using `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]    --> src/main.rs:177:13
[INFO] [stderr]     |
[INFO] [stderr] 177 |             write!(&mut res, "{} {}\n", format!("{:02}",i), self.tile[i]).unwrap();
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::write_with_newline)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::sync::mpsc::channel`
[INFO] [stderr]   --> src/main.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use std::sync::mpsc::channel;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]    --> src/main.rs:318:29
[INFO] [stderr]     |
[INFO] [stderr] 318 | static GENERATIONS : u32 =  1000000;
[INFO] [stderr]     |                             ^^^^^^^ help: consider: `1_000_000`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::unreadable_literal)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]    --> src/main.rs:321:27
[INFO] [stderr]     |
[INFO] [stderr] 321 | static MAX_RANDOM: u32 =  10000000;
[INFO] [stderr]     |                           ^^^^^^^^ help: consider: `10_000_000`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::sync::mpsc::channel`
[INFO] [stderr]   --> src/main.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use std::sync::mpsc::channel;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]    --> src/main.rs:318:29
[INFO] [stderr]     |
[INFO] [stderr] 318 | static GENERATIONS : u32 =  1000000;
[INFO] [stderr]     |                             ^^^^^^^ help: consider: `1_000_000`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::unreadable_literal)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]    --> src/main.rs:321:27
[INFO] [stderr]     |
[INFO] [stderr] 321 | static MAX_RANDOM: u32 =  10000000;
[INFO] [stderr]     |                           ^^^^^^^^ help: consider: `10_000_000`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/main.rs:52:16
[INFO] [stderr]    |
[INFO] [stderr] 52 |     fn new(v : &Vec<Tile>) -> Self{ //Find a better way! 
[INFO] [stderr]    |                ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] help: change this to
[INFO] [stderr]    |
[INFO] [stderr] 52 |     fn new(v : &[Tile]) -> Self{ //Find a better way! 
[INFO] [stderr]    |                ^^^^^^^
[INFO] [stderr] help: change `v.clone()` to
[INFO] [stderr]    |
[INFO] [stderr] 54 |         let mut pickout = v.to_owned();
[INFO] [stderr]    |                           ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is only used to index `selection`.
[INFO] [stderr]   --> src/main.rs:59:18
[INFO] [stderr]    |
[INFO] [stderr] 59 |         for i in 0 .. 19 {
[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] 59 |         for <item> in &mut selection {
[INFO] [stderr]    |             ^^^^^^    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is only used to index `not_selected`.
[INFO] [stderr]   --> src/main.rs:65:18
[INFO] [stderr]    |
[INFO] [stderr] 65 |         for i in 0 .. 8 {
[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] 65 |         for <item> in &mut not_selected {
[INFO] [stderr]    |             ^^^^^^    ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `f` is only used to index `survivor`.
[INFO] [stderr]    --> src/main.rs:212:18
[INFO] [stderr]     |
[INFO] [stderr] 212 |         for f in 0 .. survivor.len(){
[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] 212 |         for <item> in &survivor{
[INFO] [stderr]     |             ^^^^^^    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/main.rs:214:13
[INFO] [stderr]     |
[INFO] [stderr] 214 |             self.sum = self.sum + health;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.sum += health`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::assign_op_pattern)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/main.rs:227:39
[INFO] [stderr]     |
[INFO] [stderr] 227 |     fn generate_first(possible_tile : &Vec<Tile> , size : u32) -> Self{
[INFO] [stderr]     |                                       ^^^^^^^^^^ help: change this to: `&[Tile]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/main.rs:237:38
[INFO] [stderr]     |
[INFO] [stderr] 237 |     fn generate_next(possible_tile : &Vec<Tile> , size : u32, survivor : Vec<Field>) -> Self{
[INFO] [stderr]     |                                      ^^^^^^^^^^ help: change this to: `&[Tile]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/main.rs:238:17
[INFO] [stderr]     |
[INFO] [stderr] 238 |         assert!(survivor.len() > 0);
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!survivor.is_empty()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::len_zero)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: this looks like you are swapping elements of `selection` manually
[INFO] [stderr]    --> src/main.rs:288:13
[INFO] [stderr]     |
[INFO] [stderr] 288 | /             let tile_1 = selection[rn_1];
[INFO] [stderr] 289 | | 
[INFO] [stderr] 290 | |             selection[rn_1] = selection[rn_2];
[INFO] [stderr] 291 | |             selection[rn_2] = tile_1;
[INFO] [stderr]     | |____________________________________^ help: try: `selection.swap(rn_1, rn_2)`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::manual_swap)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_swap
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/main.rs:353:35
[INFO] [stderr]     |
[INFO] [stderr] 353 | fn genetic_search(possible_tile : &Vec<Tile>) -> Field{
[INFO] [stderr]     |                                   ^^^^^^^^^^ help: change this to: `&[Tile]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/main.rs:379:34
[INFO] [stderr]     |
[INFO] [stderr] 379 | fn random_search(possible_tile : &Vec<Tile>) -> Field{
[INFO] [stderr]     |                                  ^^^^^^^^^^ help: change this to: `&[Tile]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/main.rs:392:21
[INFO] [stderr]     |
[INFO] [stderr] 392 |             max_f = f.clone();
[INFO] [stderr]     |                     ^^^^^^^^^ help: try removing the `clone` call: `f`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::clone_on_copy)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/main.rs:394:9
[INFO] [stderr]     |
[INFO] [stderr] 394 |         i = i + 1;
[INFO] [stderr]     |         ^^^^^^^^^ help: replace it with: `i += 1`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/main.rs:52:16
[INFO] [stderr]    |
[INFO] [stderr] 52 |     fn new(v : &Vec<Tile>) -> Self{ //Find a better way! 
[INFO] [stderr]    |                ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] help: change this to
[INFO] [stderr]    |
[INFO] [stderr] 52 |     fn new(v : &[Tile]) -> Self{ //Find a better way! 
[INFO] [stderr]    |                ^^^^^^^
[INFO] [stderr] help: change `v.clone()` to
[INFO] [stderr]    |
[INFO] [stderr] 54 |         let mut pickout = v.to_owned();
[INFO] [stderr]    |                           ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is only used to index `selection`.
[INFO] [stderr]   --> src/main.rs:59:18
[INFO] [stderr]    |
[INFO] [stderr] 59 |         for i in 0 .. 19 {
[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] 59 |         for <item> in &mut selection {
[INFO] [stderr]    |             ^^^^^^    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is only used to index `not_selected`.
[INFO] [stderr]   --> src/main.rs:65:18
[INFO] [stderr]    |
[INFO] [stderr] 65 |         for i in 0 .. 8 {
[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] 65 |         for <item> in &mut not_selected {
[INFO] [stderr]    |             ^^^^^^    ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `f` is only used to index `survivor`.
[INFO] [stderr]    --> src/main.rs:212:18
[INFO] [stderr]     |
[INFO] [stderr] 212 |         for f in 0 .. survivor.len(){
[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] 212 |         for <item> in &survivor{
[INFO] [stderr]     |             ^^^^^^    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/main.rs:214:13
[INFO] [stderr]     |
[INFO] [stderr] 214 |             self.sum = self.sum + health;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.sum += health`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::assign_op_pattern)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/main.rs:227:39
[INFO] [stderr]     |
[INFO] [stderr] 227 |     fn generate_first(possible_tile : &Vec<Tile> , size : u32) -> Self{
[INFO] [stderr]     |                                       ^^^^^^^^^^ help: change this to: `&[Tile]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/main.rs:237:38
[INFO] [stderr]     |
[INFO] [stderr] 237 |     fn generate_next(possible_tile : &Vec<Tile> , size : u32, survivor : Vec<Field>) -> Self{
[INFO] [stderr]     |                                      ^^^^^^^^^^ help: change this to: `&[Tile]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/main.rs:238:17
[INFO] [stderr]     |
[INFO] [stderr] 238 |         assert!(survivor.len() > 0);
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!survivor.is_empty()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::len_zero)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: this looks like you are swapping elements of `selection` manually
[INFO] [stderr]    --> src/main.rs:288:13
[INFO] [stderr]     |
[INFO] [stderr] 288 | /             let tile_1 = selection[rn_1];
[INFO] [stderr] 289 | | 
[INFO] [stderr] 290 | |             selection[rn_1] = selection[rn_2];
[INFO] [stderr] 291 | |             selection[rn_2] = tile_1;
[INFO] [stderr]     | |____________________________________^ help: try: `selection.swap(rn_1, rn_2)`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::manual_swap)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_swap
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/main.rs:353:35
[INFO] [stderr]     |
[INFO] [stderr] 353 | fn genetic_search(possible_tile : &Vec<Tile>) -> Field{
[INFO] [stderr]     |                                   ^^^^^^^^^^ help: change this to: `&[Tile]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/main.rs:379:34
[INFO] [stderr]     |
[INFO] [stderr] 379 | fn random_search(possible_tile : &Vec<Tile>) -> Field{
[INFO] [stderr]     |                                  ^^^^^^^^^^ help: change this to: `&[Tile]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/main.rs:392:21
[INFO] [stderr]     |
[INFO] [stderr] 392 |             max_f = f.clone();
[INFO] [stderr]     |                     ^^^^^^^^^ help: try removing the `clone` call: `f`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::clone_on_copy)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/main.rs:394:9
[INFO] [stderr]     |
[INFO] [stderr] 394 |         i = i + 1;
[INFO] [stderr]     |         ^^^^^^^^^ help: replace it with: `i += 1`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.96s
[INFO] running `"docker" "inspect" "6b87436ea4cfcd73bebb67910cca50164ceefcef155fa984d3195fb99fc4f498"`
[INFO] running `"docker" "rm" "-f" "6b87436ea4cfcd73bebb67910cca50164ceefcef155fa984d3195fb99fc4f498"`
[INFO] [stdout] 6b87436ea4cfcd73bebb67910cca50164ceefcef155fa984d3195fb99fc4f498