[INFO] updating cached repository https://github.com/Alberto-Perez-1994/Chess-Engine
[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] 13c63f1acf9329762718e8fbced68469cb16253d
[INFO] checking Alberto-Perez-1994/Chess-Engine against master#fdc0011561c6365c596dfd8fa1ef388162bc89c7 for pr-66504-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlberto-Perez-1994%2FChess-Engine" "/workspace/builds/worker-1/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Alberto-Perez-1994/Chess-Engine on toolchain fdc0011561c6365c596dfd8fa1ef388162bc89c7
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/Alberto-Perez-1994/Chess-Engine
[INFO] removed workspace from git repo https://github.com/Alberto-Perez-1994/Chess-Engine
[INFO] finished tweaking git repo https://github.com/Alberto-Perez-1994/Chess-Engine
[INFO] tweaked toml for git repo https://github.com/Alberto-Perez-1994/Chess-Engine written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/Alberto-Perez-1994/Chess-Engine already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "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] f6d12a244c147cb145c05a3464a60dba00c913ec5f1ded8edb2bd12acf37a2e8
[INFO] running `"docker" "start" "-a" "f6d12a244c147cb145c05a3464a60dba00c913ec5f1ded8edb2bd12acf37a2e8"`
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]     Checking chess v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]   --> src/search.rs:21:45
[INFO] [stderr]    |
[INFO] [stderr] 21 |     pub fn divide (&mut self, depth: u8) -> (HashMap<String, u64>) {
[INFO] [stderr]    |                                             ^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]   --> src/search.rs:21:45
[INFO] [stderr]    |
[INFO] [stderr] 21 |     pub fn divide (&mut self, depth: u8) -> (HashMap<String, u64>) {
[INFO] [stderr]    |                                             ^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `enemy_side`
[INFO] [stderr]    --> src/move_gen.rs:231:88
[INFO] [stderr]     |
[INFO] [stderr] 231 |     fn get_knight_moves (&self, index: usize, movegen_type: MoveGen, player_side: u64, enemy_side: u64) -> u64 {
[INFO] [stderr]     |                                                                                        ^^^^^^^^^^ help: consider prefixing with an underscore: `_enemy_side`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `enemy_side`
[INFO] [stderr]    --> src/move_gen.rs:315:91
[INFO] [stderr]     |
[INFO] [stderr] 315 |     fn get_king_moves (&self, king_index: usize, movegen_type: MoveGen, player_side: u64, enemy_side: u64) -> u64 {
[INFO] [stderr]     |                                                                                           ^^^^^^^^^^ help: consider prefixing with an underscore: `_enemy_side`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `captures` is never read
[INFO] [stderr]   --> src/search.rs:80:13
[INFO] [stderr]    |
[INFO] [stderr] 80 |             captures += captured;
[INFO] [stderr]    |             ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `enemy_side`
[INFO] [stderr]    --> src/move_gen.rs:231:88
[INFO] [stderr]     |
[INFO] [stderr] 231 |     fn get_knight_moves (&self, index: usize, movegen_type: MoveGen, player_side: u64, enemy_side: u64) -> u64 {
[INFO] [stderr]     |                                                                                        ^^^^^^^^^^ help: consider prefixing with an underscore: `_enemy_side`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `enemy_side`
[INFO] [stderr]    --> src/move_gen.rs:315:91
[INFO] [stderr]     |
[INFO] [stderr] 315 |     fn get_king_moves (&self, king_index: usize, movegen_type: MoveGen, player_side: u64, enemy_side: u64) -> u64 {
[INFO] [stderr]     |                                                                                           ^^^^^^^^^^ help: consider prefixing with an underscore: `_enemy_side`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `captures` is never read
[INFO] [stderr]   --> src/search.rs:80:13
[INFO] [stderr]    |
[INFO] [stderr] 80 |             captures += captured;
[INFO] [stderr]    |             ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/evaluation.rs:29:13
[INFO] [stderr]    |
[INFO] [stderr] 29 |         let mut pieces: u64 = player_side;
[INFO] [stderr]    |             ----^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/search.rs:23:13
[INFO] [stderr]    |
[INFO] [stderr] 23 |         let mut pieces = match self.player {Player::White => self.white_side,  Player::Black => self.black_side};
[INFO] [stderr]    |             ----^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/evaluation.rs:29:13
[INFO] [stderr]    |
[INFO] [stderr] 29 |         let mut pieces: u64 = player_side;
[INFO] [stderr]    |             ----^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/search.rs:66:13
[INFO] [stderr]    |
[INFO] [stderr] 66 |         let mut pieces = match self.player {Player::White => self.white_side,  Player::Black => self.black_side};
[INFO] [stderr]    |             ----^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/search.rs:127:13
[INFO] [stderr]     |
[INFO] [stderr] 127 |         let mut pieces = match self.player {Player::White => self.white_side,  Player::Black => self.black_side};
[INFO] [stderr]     |             ----^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/search.rs:23:13
[INFO] [stderr]    |
[INFO] [stderr] 23 |         let mut pieces = match self.player {Player::White => self.white_side,  Player::Black => self.black_side};
[INFO] [stderr]    |             ----^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/search.rs:128:13
[INFO] [stderr]     |
[INFO] [stderr] 128 |         let mut sorted_moves; let mut sorted_moves_iter; let mut unsorted_moves;
[INFO] [stderr]     |             ----^^^^^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/search.rs:189:13
[INFO] [stderr]     |
[INFO] [stderr] 189 |         let mut pieces = match self.player {Player::White => self.white_side,  Player::Black => self.black_side};
[INFO] [stderr]     |             ----^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/search.rs:66:13
[INFO] [stderr]    |
[INFO] [stderr] 66 |         let mut pieces = match self.player {Player::White => self.white_side,  Player::Black => self.black_side};
[INFO] [stderr]    |             ----^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/search.rs:214:13
[INFO] [stderr]     |
[INFO] [stderr] 214 |         let mut sorted_moves = &mut tt_moves[0..i];
[INFO] [stderr]     |             ----^^^^^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/search.rs:127:13
[INFO] [stderr]     |
[INFO] [stderr] 127 |         let mut pieces = match self.player {Player::White => self.white_side,  Player::Black => self.black_side};
[INFO] [stderr]     |             ----^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/search.rs:128:13
[INFO] [stderr]     |
[INFO] [stderr] 128 |         let mut sorted_moves; let mut sorted_moves_iter; let mut unsorted_moves;
[INFO] [stderr]     |             ----^^^^^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/search.rs:189:13
[INFO] [stderr]     |
[INFO] [stderr] 189 |         let mut pieces = match self.player {Player::White => self.white_side,  Player::Black => self.black_side};
[INFO] [stderr]     |             ----^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/search.rs:214:13
[INFO] [stderr]     |
[INFO] [stderr] 214 |         let mut sorted_moves = &mut tt_moves[0..i];
[INFO] [stderr]     |             ----^^^^^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/transposition_table.rs:121:13
[INFO] [stderr]     |
[INFO] [stderr] 121 |         let mut board = Bitboard::new(board);
[INFO] [stderr]     |             ----^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/transposition_table.rs:122:13
[INFO] [stderr]     |
[INFO] [stderr] 122 |         let mut attacks = Bitboard::new(0);
[INFO] [stderr]     |             ----^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Knight`
[INFO] [stderr]   --> src/board.rs:18:29
[INFO] [stderr]    |
[INFO] [stderr] 18 | pub enum Promotion { Queen, Knight, Rook, Bishop, None }
[INFO] [stderr]    |                             ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Rook`
[INFO] [stderr]   --> src/board.rs:18:37
[INFO] [stderr]    |
[INFO] [stderr] 18 | pub enum Promotion { Queen, Knight, Rook, Bishop, None }
[INFO] [stderr]    |                                     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Bishop`
[INFO] [stderr]   --> src/board.rs:18:43
[INFO] [stderr]    |
[INFO] [stderr] 18 | pub enum Promotion { Queen, Knight, Rook, Bishop, None }
[INFO] [stderr]    |                                           ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `None`
[INFO] [stderr]   --> src/board.rs:18:51
[INFO] [stderr]    |
[INFO] [stderr] 18 | pub enum Promotion { Queen, Knight, Rook, Bishop, None }
[INFO] [stderr]    |                                                   ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `start`
[INFO] [stderr]   --> src/board.rs:66:5
[INFO] [stderr]    |
[INFO] [stderr] 66 |     pub fn start () -> Board {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `divide`
[INFO] [stderr]   --> src/search.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     pub fn divide (&mut self, depth: u8) -> (HashMap<String, u64>) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `perft`
[INFO] [stderr]   --> src/search.rs:64:5
[INFO] [stderr]    |
[INFO] [stderr] 64 |     pub fn perft (&mut self, depth: u8) -> (u64, u64, u64, u64, u64) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/transposition_table.rs:121:13
[INFO] [stderr]     |
[INFO] [stderr] 121 |         let mut board = Bitboard::new(board);
[INFO] [stderr]     |             ----^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `format_index`
[INFO] [stderr]  --> src/cli.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     pub fn format_index (index: u8) -> String {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `print_perft`
[INFO] [stderr]   --> src/cli.rs:97:5
[INFO] [stderr]    |
[INFO] [stderr] 97 |     pub fn print_perft (&mut self, depth: u8) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `print_divide`
[INFO] [stderr]    --> src/cli.rs:112:5
[INFO] [stderr]     |
[INFO] [stderr] 112 |     pub fn print_divide (&mut self, depth: u8) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `print_divide_comparison`
[INFO] [stderr]    --> src/cli.rs:122:5
[INFO] [stderr]     |
[INFO] [stderr] 122 |     pub fn print_divide_comparison (&mut self, fen_string: &str, depth: u8) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_stockfish_divide`
[INFO] [stderr]    --> src/cli.rs:144:5
[INFO] [stderr]     |
[INFO] [stderr] 144 |     fn get_stockfish_divide (fen_string: &str, depth: u8) -> HashMap<String, u64> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/transposition_table.rs:122:13
[INFO] [stderr]     |
[INFO] [stderr] 122 |         let mut attacks = Bitboard::new(0);
[INFO] [stderr]     |             ----^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `start`
[INFO] [stderr]   --> src/board.rs:66:5
[INFO] [stderr]    |
[INFO] [stderr] 66 |     pub fn start () -> Board {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `divide`
[INFO] [stderr]   --> src/search.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     pub fn divide (&mut self, depth: u8) -> (HashMap<String, u64>) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `format_index`
[INFO] [stderr]  --> src/cli.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     pub fn format_index (index: u8) -> String {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `print_divide`
[INFO] [stderr]    --> src/cli.rs:112:5
[INFO] [stderr]     |
[INFO] [stderr] 112 |     pub fn print_divide (&mut self, depth: u8) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `print_divide_comparison`
[INFO] [stderr]    --> src/cli.rs:122:5
[INFO] [stderr]     |
[INFO] [stderr] 122 |     pub fn print_divide_comparison (&mut self, fen_string: &str, depth: u8) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_stockfish_divide`
[INFO] [stderr]    --> src/cli.rs:144:5
[INFO] [stderr]     |
[INFO] [stderr] 144 |     fn get_stockfish_divide (fen_string: &str, depth: u8) -> HashMap<String, u64> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.94s
[INFO] running `"docker" "inspect" "f6d12a244c147cb145c05a3464a60dba00c913ec5f1ded8edb2bd12acf37a2e8"`
[INFO] running `"docker" "rm" "-f" "f6d12a244c147cb145c05a3464a60dba00c913ec5f1ded8edb2bd12acf37a2e8"`
[INFO] [stdout] f6d12a244c147cb145c05a3464a60dba00c913ec5f1ded8edb2bd12acf37a2e8