[INFO] cloning repository https://github.com/SteinarSi/Chessbot5
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SteinarSi/Chessbot5" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSteinarSi%2FChessbot5", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSteinarSi%2FChessbot5'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c68cb73a9fcc515d9fe3fe36b17e016157343e6b
[INFO] checking SteinarSi/Chessbot5 against master#90442458ac46b1d5eed752c316da25450f67285b for pr-81477
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSteinarSi%2FChessbot5" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/SteinarSi/Chessbot5 on toolchain 90442458ac46b1d5eed752c316da25450f67285b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/SteinarSi/Chessbot5
[INFO] finished tweaking git repo https://github.com/SteinarSi/Chessbot5
[INFO] tweaked toml for git repo https://github.com/SteinarSi/Chessbot5 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--no-deps" "--format-version=1", 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] 9f8132cd4c55fb170384e1976cb5f9a92f7768b228f316fd6dea44ab1b4b2b2d
[INFO] running `Command { std: "docker" "start" "-a" "9f8132cd4c55fb170384e1976cb5f9a92f7768b228f316fd6dea44ab1b4b2b2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9f8132cd4c55fb170384e1976cb5f9a92f7768b228f316fd6dea44ab1b4b2b2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f8132cd4c55fb170384e1976cb5f9a92f7768b228f316fd6dea44ab1b4b2b2d", kill_on_drop: false }`
[INFO] [stdout] 9f8132cd4c55fb170384e1976cb5f9a92f7768b228f316fd6dea44ab1b4b2b2d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c2e8595a497ae615b111facb3f53387530f00dd6b03e9929723da8c37f759060
[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" "c2e8595a497ae615b111facb3f53387530f00dd6b03e9929723da8c37f759060", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand_pcg v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking chessbot5 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/backend/movement.rs:35:18
[INFO] [stdout]    |
[INFO] [stdout] 35 |         let filefrom = (l.next()? as i32 - 97);
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/backend/movement.rs:36:18
[INFO] [stdout]    |
[INFO] [stdout] 36 |         let rankfrom = (56 - l.next()? as i32);
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/backend/movement.rs:37:18
[INFO] [stdout]    |
[INFO] [stdout] 37 |         let fileto   = (l.next()? as i32 - 97);
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/backend/movement.rs:38:18
[INFO] [stdout]    |
[INFO] [stdout] 38 |         let rankto   = (56 - l.next()? as i32);
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `PieceType::*`
[INFO] [stdout]  --> src/backend/zobrist.rs:1:53
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::backend::piece::{Piece, Color, Color::*, PieceType::*};
[INFO] [stdout]   |                                                     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::backend::board::Board`
[INFO] [stdout]  --> src/backend/zobrist.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::backend::board::Board;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::backend::movement`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::backend::movement;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: label name `'outer` shadows a label name that is already in scope
[INFO] [stdout]    --> src/backend/board.rs:253:3
[INFO] [stdout]     |
[INFO] [stdout] 235 |         'outer: for dir in &[(0, -1), (1, 0), (0, 1), (-1, 0)]{
[INFO] [stdout]     |         ------ first declared here
[INFO] [stdout] ...
[INFO] [stdout] 253 |         'outer: for dir in &[(1, 1), (-1, 1)]{
[INFO] [stdout]     |         ^^^^^^ label `'outer` already in scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: label name `'outer` shadows a label name that is already in scope
[INFO] [stdout]    --> src/backend/board.rs:270:3
[INFO] [stdout]     |
[INFO] [stdout] 235 |         'outer: for dir in &[(0, -1), (1, 0), (0, 1), (-1, 0)]{
[INFO] [stdout]     |         ------ first declared here
[INFO] [stdout] ...
[INFO] [stdout] 270 |         'outer: for dir in &[(1, -1), (-1, -1)]{
[INFO] [stdout]     |         ^^^^^^ label `'outer` already in scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: label name `'outer` shadows a label name that is already in scope
[INFO] [stdout]    --> src/backend/board.rs:270:3
[INFO] [stdout]     |
[INFO] [stdout] 253 |         'outer: for dir in &[(1, 1), (-1, 1)]{
[INFO] [stdout]     |         ------ first declared here
[INFO] [stdout] ...
[INFO] [stdout] 270 |         'outer: for dir in &[(1, -1), (-1, -1)]{
[INFO] [stdout]     |         ^^^^^^ label `'outer` already in scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/backend/movement.rs:35:18
[INFO] [stdout]    |
[INFO] [stdout] 35 |         let filefrom = (l.next()? as i32 - 97);
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/backend/movement.rs:36:18
[INFO] [stdout]    |
[INFO] [stdout] 36 |         let rankfrom = (56 - l.next()? as i32);
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/backend/movement.rs:37:18
[INFO] [stdout]    |
[INFO] [stdout] 37 |         let fileto   = (l.next()? as i32 - 97);
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/backend/movement.rs:38:18
[INFO] [stdout]    |
[INFO] [stdout] 38 |         let rankto   = (56 - l.next()? as i32);
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `PieceType::*`
[INFO] [stdout]  --> src/backend/zobrist.rs:1:53
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::backend::piece::{Piece, Color, Color::*, PieceType::*};
[INFO] [stdout]   |                                                     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::backend::board::Board`
[INFO] [stdout]  --> src/backend/zobrist.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::backend::board::Board;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::backend::movement`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::backend::movement;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: label name `'outer` shadows a label name that is already in scope
[INFO] [stdout]    --> src/backend/board.rs:253:3
[INFO] [stdout]     |
[INFO] [stdout] 235 |         'outer: for dir in &[(0, -1), (1, 0), (0, 1), (-1, 0)]{
[INFO] [stdout]     |         ------ first declared here
[INFO] [stdout] ...
[INFO] [stdout] 253 |         'outer: for dir in &[(1, 1), (-1, 1)]{
[INFO] [stdout]     |         ^^^^^^ label `'outer` already in scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: label name `'outer` shadows a label name that is already in scope
[INFO] [stdout]    --> src/backend/board.rs:270:3
[INFO] [stdout]     |
[INFO] [stdout] 235 |         'outer: for dir in &[(0, -1), (1, 0), (0, 1), (-1, 0)]{
[INFO] [stdout]     |         ------ first declared here
[INFO] [stdout] ...
[INFO] [stdout] 270 |         'outer: for dir in &[(1, -1), (-1, -1)]{
[INFO] [stdout]     |         ^^^^^^ label `'outer` already in scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: label name `'outer` shadows a label name that is already in scope
[INFO] [stdout]    --> src/backend/board.rs:270:3
[INFO] [stdout]     |
[INFO] [stdout] 253 |         'outer: for dir in &[(1, 1), (-1, 1)]{
[INFO] [stdout]     |         ------ first declared here
[INFO] [stdout] ...
[INFO] [stdout] 270 |         'outer: for dir in &[(1, -1), (-1, -1)]{
[INFO] [stdout]     |         ^^^^^^ label `'outer` already in scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `move_str`
[INFO] [stdout]    --> src/backend/board.rs:141:9
[INFO] [stdout]     |
[INFO] [stdout] 141 |     pub fn move_str(&mut self, s: &str) -> Option<()>{
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_legal`
[INFO] [stdout]    --> src/backend/board.rs:148:9
[INFO] [stdout]     |
[INFO] [stdout] 148 |     pub fn is_legal(&mut self, m: Move) -> bool{
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `counter`
[INFO] [stdout]    --> src/backend/board.rs:160:9
[INFO] [stdout]     |
[INFO] [stdout] 160 |     pub fn counter(&self) -> usize{
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `hash`
[INFO] [stdout]    --> src/backend/board.rs:164:9
[INFO] [stdout]     |
[INFO] [stdout] 164 |     pub fn hash(&self) -> i64{
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_checkmate`
[INFO] [stdout]    --> src/backend/board.rs:168:9
[INFO] [stdout]     |
[INFO] [stdout] 168 |     pub fn is_checkmate(&mut self) -> bool{
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `winner`
[INFO] [stdout]    --> src/backend/board.rs:172:9
[INFO] [stdout]     |
[INFO] [stdout] 172 |     pub fn winner(&self) -> Option<Color>{
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_threatened`
[INFO] [stdout]    --> src/backend/board.rs:218:9
[INFO] [stdout]     |
[INFO] [stdout] 218 |     pub fn is_threatened(&self, pos: &Position) -> bool{
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `EMPTY`
[INFO] [stdout]    --> src/backend/board.rs:611:1
[INFO] [stdout]     |
[INFO] [stdout] 611 | / const EMPTY: &str = "\
[INFO] [stdout] 612 | | --------
[INFO] [stdout] 613 | | --------
[INFO] [stdout] 614 | | --------
[INFO] [stdout] ...   |
[INFO] [stdout] 618 | | --------
[INFO] [stdout] 619 | | --------";
[INFO] [stdout]     | |__________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_str`
[INFO] [stdout]   --> src/backend/movement.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn from_str(s: &str) -> Option<Move>{
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `update_xy`
[INFO] [stdout]   --> src/backend/zobrist.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 47 |     pub fn update_xy(&mut self, p: &Piece, x: usize, y: usize){
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `update_pos`
[INFO] [stdout]   --> src/backend/zobrist.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |     pub fn update_pos(&mut self, p: &Piece, pos: &Position){
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `swap_sides`
[INFO] [stdout]   --> src/backend/zobrist.rs:59:9
[INFO] [stdout]    |
[INFO] [stdout] 59 |     pub fn swap_sides(&mut self){
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `update_castle`
[INFO] [stdout]   --> src/backend/zobrist.rs:63:9
[INFO] [stdout]    |
[INFO] [stdout] 63 |     pub fn update_castle(&mut self, castle: (bool, bool, bool, bool)){
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `update_en_passant`
[INFO] [stdout]   --> src/backend/zobrist.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |     pub fn update_en_passant(&mut self, c: usize){
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `main2`
[INFO] [stdout]   --> src/main.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn main2() {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021.
[INFO] [stdout]    --> src/backend/board.rs:488:72
[INFO] [stdout]     |
[INFO] [stdout] 488 |                 [Position{x: 4, y: 7}, Position{x: 5, y: 7}, Position{x: 6, y: 7}].into_iter().all(|p| ! self.is_threatened_by(&p, Black)){
[INFO] [stdout]     |                                                                                    ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(array_into_iter)]` on by default
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 488 |                 [Position{x: 4, y: 7}, Position{x: 5, y: 7}, Position{x: 6, y: 7}].iter().all(|p| ! self.is_threatened_by(&p, Black)){
[INFO] [stdout]     |                                                                                    ^^^^
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 488 |                 IntoIterator::into_iter([Position{x: 4, y: 7}, Position{x: 5, y: 7}, Position{x: 6, y: 7}]).all(|p| ! self.is_threatened_by(&p, Black)){
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^                                                                  ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021.
[INFO] [stdout]    --> src/backend/board.rs:492:71
[INFO] [stdout]     |
[INFO] [stdout] 492 |             [Position{x: 4, y: 7}, Position{x: 3, y: 7}, Position{x: 2, y: 7}].into_iter().all(|p| ! self.is_threatened_by(&p, Black)) {
[INFO] [stdout]     |                                                                                ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 492 |             [Position{x: 4, y: 7}, Position{x: 3, y: 7}, Position{x: 2, y: 7}].iter().all(|p| ! self.is_threatened_by(&p, Black)) {
[INFO] [stdout]     |                                                                                ^^^^
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 492 |             IntoIterator::into_iter([Position{x: 4, y: 7}, Position{x: 3, y: 7}, Position{x: 2, y: 7}]).all(|p| ! self.is_threatened_by(&p, Black)) {
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^                                                                  ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021.
[INFO] [stdout]    --> src/backend/board.rs:498:71
[INFO] [stdout]     |
[INFO] [stdout] 498 |             [Position{x: 4, y: 0}, Position{x: 5, y: 0}, Position{x: 6, y: 0}].into_iter().all(|p| ! self.is_threatened_by(&p, White)) {
[INFO] [stdout]     |                                                                                ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 498 |             [Position{x: 4, y: 0}, Position{x: 5, y: 0}, Position{x: 6, y: 0}].iter().all(|p| ! self.is_threatened_by(&p, White)) {
[INFO] [stdout]     |                                                                                ^^^^
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 498 |             IntoIterator::into_iter([Position{x: 4, y: 0}, Position{x: 5, y: 0}, Position{x: 6, y: 0}]).all(|p| ! self.is_threatened_by(&p, White)) {
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^                                                                  ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021.
[INFO] [stdout]    --> src/backend/board.rs:502:71
[INFO] [stdout]     |
[INFO] [stdout] 502 |             [Position{x: 4, y: 0}, Position{x: 3, y: 0}, Position{x: 2, y: 0}].into_iter().all(|p| ! self.is_threatened_by(&p, White)){
[INFO] [stdout]     |                                                                                ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 502 |             [Position{x: 4, y: 0}, Position{x: 3, y: 0}, Position{x: 2, y: 0}].iter().all(|p| ! self.is_threatened_by(&p, White)){
[INFO] [stdout]     |                                                                                ^^^^
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 502 |             IntoIterator::into_iter([Position{x: 4, y: 0}, Position{x: 3, y: 0}, Position{x: 2, y: 0}]).all(|p| ! self.is_threatened_by(&p, White)){
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^                                                                  ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Q` should have a snake case name
[INFO] [stdout]    --> src/backend/board.rs:403:11
[INFO] [stdout]     |
[INFO] [stdout] 403 |                         let Q = Piece::new('Q');
[INFO] [stdout]     |                             ^ help: convert the identifier to snake case: `q`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `N` should have a snake case name
[INFO] [stdout]    --> src/backend/board.rs:404:11
[INFO] [stdout]     |
[INFO] [stdout] 404 |                         let N = Piece::new('N');
[INFO] [stdout]     |                             ^ help: convert the identifier to snake case: `n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Q` should have a snake case name
[INFO] [stdout]    --> src/backend/board.rs:429:13
[INFO] [stdout]     |
[INFO] [stdout] 429 | ...                   let Q = Piece::new('Q');
[INFO] [stdout]     |                           ^ help: convert the identifier to snake case: `q`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `N` should have a snake case name
[INFO] [stdout]    --> src/backend/board.rs:430:13
[INFO] [stdout]     |
[INFO] [stdout] 430 | ...                   let N = Piece::new('N');
[INFO] [stdout]     |                           ^ help: convert the identifier to snake case: `n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/backend/board.rs:723:7
[INFO] [stdout]     |
[INFO] [stdout] 723 |         let mut board = Board::new();
[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: 33 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/backend/board.rs:1260:7
[INFO] [stdout]      |
[INFO] [stdout] 1260 |         let mut zob = Zobrist::new(&board.grid, White);
[INFO] [stdout]      |             ----^^^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `counter`
[INFO] [stdout]    --> src/backend/board.rs:160:9
[INFO] [stdout]     |
[INFO] [stdout] 160 |     pub fn counter(&self) -> usize{
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_threatened`
[INFO] [stdout]    --> src/backend/board.rs:218:9
[INFO] [stdout]     |
[INFO] [stdout] 218 |     pub fn is_threatened(&self, pos: &Position) -> bool{
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `update_xy`
[INFO] [stdout]   --> src/backend/zobrist.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 47 |     pub fn update_xy(&mut self, p: &Piece, x: usize, y: usize){
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `update_pos`
[INFO] [stdout]   --> src/backend/zobrist.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |     pub fn update_pos(&mut self, p: &Piece, pos: &Position){
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `swap_sides`
[INFO] [stdout]   --> src/backend/zobrist.rs:59:9
[INFO] [stdout]    |
[INFO] [stdout] 59 |     pub fn swap_sides(&mut self){
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `update_castle`
[INFO] [stdout]   --> src/backend/zobrist.rs:63:9
[INFO] [stdout]    |
[INFO] [stdout] 63 |     pub fn update_castle(&mut self, castle: (bool, bool, bool, bool)){
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `update_en_passant`
[INFO] [stdout]   --> src/backend/zobrist.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |     pub fn update_en_passant(&mut self, c: usize){
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `main2`
[INFO] [stdout]   --> src/main.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn main2() {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021.
[INFO] [stdout]    --> src/backend/board.rs:488:72
[INFO] [stdout]     |
[INFO] [stdout] 488 |                 [Position{x: 4, y: 7}, Position{x: 5, y: 7}, Position{x: 6, y: 7}].into_iter().all(|p| ! self.is_threatened_by(&p, Black)){
[INFO] [stdout]     |                                                                                    ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(array_into_iter)]` on by default
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 488 |                 [Position{x: 4, y: 7}, Position{x: 5, y: 7}, Position{x: 6, y: 7}].iter().all(|p| ! self.is_threatened_by(&p, Black)){
[INFO] [stdout]     |                                                                                    ^^^^
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 488 |                 IntoIterator::into_iter([Position{x: 4, y: 7}, Position{x: 5, y: 7}, Position{x: 6, y: 7}]).all(|p| ! self.is_threatened_by(&p, Black)){
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^                                                                  ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021.
[INFO] [stdout]    --> src/backend/board.rs:492:71
[INFO] [stdout]     |
[INFO] [stdout] 492 |             [Position{x: 4, y: 7}, Position{x: 3, y: 7}, Position{x: 2, y: 7}].into_iter().all(|p| ! self.is_threatened_by(&p, Black)) {
[INFO] [stdout]     |                                                                                ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 492 |             [Position{x: 4, y: 7}, Position{x: 3, y: 7}, Position{x: 2, y: 7}].iter().all(|p| ! self.is_threatened_by(&p, Black)) {
[INFO] [stdout]     |                                                                                ^^^^
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 492 |             IntoIterator::into_iter([Position{x: 4, y: 7}, Position{x: 3, y: 7}, Position{x: 2, y: 7}]).all(|p| ! self.is_threatened_by(&p, Black)) {
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^                                                                  ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021.
[INFO] [stdout]    --> src/backend/board.rs:498:71
[INFO] [stdout]     |
[INFO] [stdout] 498 |             [Position{x: 4, y: 0}, Position{x: 5, y: 0}, Position{x: 6, y: 0}].into_iter().all(|p| ! self.is_threatened_by(&p, White)) {
[INFO] [stdout]     |                                                                                ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 498 |             [Position{x: 4, y: 0}, Position{x: 5, y: 0}, Position{x: 6, y: 0}].iter().all(|p| ! self.is_threatened_by(&p, White)) {
[INFO] [stdout]     |                                                                                ^^^^
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 498 |             IntoIterator::into_iter([Position{x: 4, y: 0}, Position{x: 5, y: 0}, Position{x: 6, y: 0}]).all(|p| ! self.is_threatened_by(&p, White)) {
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^                                                                  ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021.
[INFO] [stdout]    --> src/backend/board.rs:502:71
[INFO] [stdout]     |
[INFO] [stdout] 502 |             [Position{x: 4, y: 0}, Position{x: 3, y: 0}, Position{x: 2, y: 0}].into_iter().all(|p| ! self.is_threatened_by(&p, White)){
[INFO] [stdout]     |                                                                                ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 502 |             [Position{x: 4, y: 0}, Position{x: 3, y: 0}, Position{x: 2, y: 0}].iter().all(|p| ! self.is_threatened_by(&p, White)){
[INFO] [stdout]     |                                                                                ^^^^
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 502 |             IntoIterator::into_iter([Position{x: 4, y: 0}, Position{x: 3, y: 0}, Position{x: 2, y: 0}]).all(|p| ! self.is_threatened_by(&p, White)){
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^                                                                  ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Q` should have a snake case name
[INFO] [stdout]    --> src/backend/board.rs:403:11
[INFO] [stdout]     |
[INFO] [stdout] 403 |                         let Q = Piece::new('Q');
[INFO] [stdout]     |                             ^ help: convert the identifier to snake case: `q`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `N` should have a snake case name
[INFO] [stdout]    --> src/backend/board.rs:404:11
[INFO] [stdout]     |
[INFO] [stdout] 404 |                         let N = Piece::new('N');
[INFO] [stdout]     |                             ^ help: convert the identifier to snake case: `n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Q` should have a snake case name
[INFO] [stdout]    --> src/backend/board.rs:429:13
[INFO] [stdout]     |
[INFO] [stdout] 429 | ...                   let Q = Piece::new('Q');
[INFO] [stdout]     |                           ^ help: convert the identifier to snake case: `q`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `N` should have a snake case name
[INFO] [stdout]    --> src/backend/board.rs:430:13
[INFO] [stdout]     |
[INFO] [stdout] 430 | ...                   let N = Piece::new('N');
[INFO] [stdout]     |                           ^ help: convert the identifier to snake case: `n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `K` should have a snake case name
[INFO] [stdout]     --> src/backend/board.rs:1099:10
[INFO] [stdout]      |
[INFO] [stdout] 1099 |         let K = Piece::new('K').unwrap();
[INFO] [stdout]      |             ^ help: convert the identifier to snake case (notice the capitalization): `k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `R` should have a snake case name
[INFO] [stdout]     --> src/backend/board.rs:1100:10
[INFO] [stdout]      |
[INFO] [stdout] 1100 |         let R = Piece::new('R').unwrap();
[INFO] [stdout]      |             ^ help: convert the identifier to snake case: `r`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `e4` should have an upper case name
[INFO] [stdout]     --> src/backend/board.rs:1144:8
[INFO] [stdout]      |
[INFO] [stdout] 1144 |     const e4: &str = "\
[INFO] [stdout]      |           ^^ help: convert the identifier to upper case: `E4`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `e4c5` should have an upper case name
[INFO] [stdout]     --> src/backend/board.rs:1153:8
[INFO] [stdout]      |
[INFO] [stdout] 1153 |     const e4c5: &str = "\
[INFO] [stdout]      |           ^^^^ help: convert the identifier to upper case: `E4C5`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `e4c6` should have an upper case name
[INFO] [stdout]     --> src/backend/board.rs:1162:8
[INFO] [stdout]      |
[INFO] [stdout] 1162 |     const e4c6: &str = "\
[INFO] [stdout]      |           ^^^^ help: convert the identifier to upper case: `E4C6`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `K` should have a snake case name
[INFO] [stdout]    --> src/backend/piece.rs:245:7
[INFO] [stdout]     |
[INFO] [stdout] 245 |         let K = Piece::new('K').unwrap();
[INFO] [stdout]     |             ^ help: convert the identifier to snake case (notice the capitalization): `k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Q` should have a snake case name
[INFO] [stdout]    --> src/backend/piece.rs:250:7
[INFO] [stdout]     |
[INFO] [stdout] 250 |         let Q = Piece::new('Q').unwrap();
[INFO] [stdout]     |             ^ help: convert the identifier to snake case: `q`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `P` should have a snake case name
[INFO] [stdout]    --> src/backend/piece.rs:255:7
[INFO] [stdout]     |
[INFO] [stdout] 255 |         let P = Piece::new('P').unwrap();
[INFO] [stdout]     |             ^ help: convert the identifier to snake case: `p`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 36 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.26s
[INFO] running `Command { std: "docker" "inspect" "c2e8595a497ae615b111facb3f53387530f00dd6b03e9929723da8c37f759060", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2e8595a497ae615b111facb3f53387530f00dd6b03e9929723da8c37f759060", kill_on_drop: false }`
[INFO] [stdout] c2e8595a497ae615b111facb3f53387530f00dd6b03e9929723da8c37f759060