[INFO] cloning repository https://github.com/2ToTheNthPower/fastpente
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/2ToTheNthPower/fastpente" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F2ToTheNthPower%2Ffastpente", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F2ToTheNthPower%2Ffastpente'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6f5dcf2d039572c7f26b56d03ac771dbd12f76e8
[INFO] testing 2ToTheNthPower/fastpente against try#9f93af291970322f4f1c6315ccde4d7078201159 for pr-146098-6
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F2ToTheNthPower%2Ffastpente" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/2ToTheNthPower/fastpente
[INFO] finished tweaking git repo https://github.com/2ToTheNthPower/fastpente
[INFO] tweaked toml for git repo https://github.com/2ToTheNthPower/fastpente written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/2ToTheNthPower/fastpente on toolchain 9f93af291970322f4f1c6315ccde4d7078201159
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/2ToTheNthPower/fastpente already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a340f616da232150c21ecf6a97764ac676e273f1202b584a6ca1264ca9b9e5d2
[INFO] running `Command { std: "docker" "start" "-a" "a340f616da232150c21ecf6a97764ac676e273f1202b584a6ca1264ca9b9e5d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a340f616da232150c21ecf6a97764ac676e273f1202b584a6ca1264ca9b9e5d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a340f616da232150c21ecf6a97764ac676e273f1202b584a6ca1264ca9b9e5d2", kill_on_drop: false }`
[INFO] [stdout] a340f616da232150c21ecf6a97764ac676e273f1202b584a6ca1264ca9b9e5d2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0423da2ae25704a5e79e95343b7c17a963a6b1a4d9ad1ce9606677e81c5174c3
[INFO] running `Command { std: "docker" "start" "-a" "0423da2ae25704a5e79e95343b7c17a963a6b1a4d9ad1ce9606677e81c5174c3", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.71
[INFO] [stderr]    Compiling libc v0.2.151
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling serde v1.0.193
[INFO] [stderr]    Compiling ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling rawpointer v0.2.1
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling matrixmultiply v0.3.8
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.43
[INFO] [stderr]    Compiling getrandom v0.2.11
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling num-complex v0.4.4
[INFO] [stderr]    Compiling ndarray v0.15.6
[INFO] [stderr]    Compiling serde_derive v1.0.193
[INFO] [stderr]    Compiling bincode v1.3.3
[INFO] [stderr]    Compiling fast_pente v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `array`
[INFO] [stdout]  --> src/board.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 | use ndarray::{array, Array2, Dimension};
[INFO] [stdout]   |               ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Read` and `Write`
[INFO] [stdout]  --> src/game.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{Read, Write};
[INFO] [stdout]   |               ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]  --> src/game.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fs::File;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::random_player::get_piece_id`
[INFO] [stdout]  --> src/game.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use crate::random_player::get_piece_id;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::io;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Duration`
[INFO] [stdout]  --> src/main.rs:7:17
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::time::{Duration, Instant};
[INFO] [stdout]   |                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Dimension`
[INFO] [stdout]  --> src/board.rs:2:30
[INFO] [stdout]   |
[INFO] [stdout] 2 | use ndarray::{array, Array2, Dimension};
[INFO] [stdout]   |                              ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `row`
[INFO] [stdout]   --> src/board.rs:56:13
[INFO] [stdout]    |
[INFO] [stdout] 56 |         for row in 0..self.grid.shape()[0] {
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_row`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/random_player.rs:52:25
[INFO] [stdout]    |
[INFO] [stdout] 52 |     pub fn think(&self, mut game:Game) -> (usize, usize) {
[INFO] [stdout]    |                         ----^^^^
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/mcts_player.rs:35:13
[INFO] [stdout]    |
[INFO] [stdout] 35 |         let mut valid_actions = game.board.get_moves();
[INFO] [stdout]    |             ----^^^^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/mcts_player.rs:45:17
[INFO] [stdout]    |
[INFO] [stdout] 45 |             let mut win_diff = winner_0_count as f32 - winner_1_count as f32;
[INFO] [stdout]    |                 ----^^^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/mcts_player.rs:41:14
[INFO] [stdout]    |
[INFO] [stdout] 41 |         for (i, action) in valid_actions.iter().enumerate() {
[INFO] [stdout]    |              ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `is_draw_count`
[INFO] [stdout]   --> src/mcts_player.rs:43:50
[INFO] [stdout]    |
[INFO] [stdout] 43 |             let (winner_0_count, winner_1_count, is_draw_count) = game.rollout(self.num_rollouts);
[INFO] [stdout]    |                                                  ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_is_draw_count`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num_players`
[INFO] [stdout]   --> src/game.rs:31:29
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn new(size: usize, num_players: usize) -> Game {
[INFO] [stdout]    |                             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_players`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num_players`
[INFO] [stdout]   --> src/game.rs:42:42
[INFO] [stdout]    |
[INFO] [stdout] 42 |     pub fn reset(&mut self, size: usize, num_players: usize) -> Game {
[INFO] [stdout]    |                                          ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_players`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/game.rs:60:17
[INFO] [stdout]    |
[INFO] [stdout] 60 |             let mut game = self.clone();
[INFO] [stdout]    |                 ----^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `board`
[INFO] [stdout]   --> src/game.rs:61:18
[INFO] [stdout]    |
[INFO] [stdout] 61 |             let (board, reward, done, outcome) = game.run(true);
[INFO] [stdout]    |                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_board`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `reward`
[INFO] [stdout]   --> src/game.rs:61:25
[INFO] [stdout]    |
[INFO] [stdout] 61 |             let (board, reward, done, outcome) = game.run(true);
[INFO] [stdout]    |                         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_reward`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `done`
[INFO] [stdout]   --> src/game.rs:61:33
[INFO] [stdout]    |
[INFO] [stdout] 61 |             let (board, reward, done, outcome) = game.run(true);
[INFO] [stdout]    |                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_done`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/game.rs:75:13
[INFO] [stdout]    |
[INFO] [stdout] 75 |         let mut valid_actions = self.board.get_moves();
[INFO] [stdout]    |             ----^^^^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `action`
[INFO] [stdout]   --> src/game.rs:77:17
[INFO] [stdout]    |
[INFO] [stdout] 77 |         for (i, action) in valid_actions.iter().enumerate() {
[INFO] [stdout]    |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_action`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `is_draw_count`
[INFO] [stdout]   --> src/game.rs:79:50
[INFO] [stdout]    |
[INFO] [stdout] 79 |             let (winner_0_count, winner_1_count, is_draw_count) = self.rollout(rollouts_per_move);
[INFO] [stdout]    |                                                  ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_is_draw_count`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/game.rs:279:21
[INFO] [stdout]     |
[INFO] [stdout] 279 |                 let mut valid_actions = self.board.get_moves();
[INFO] [stdout]     |                     ----^^^^^^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `action` is never read
[INFO] [stdout]    --> src/game.rs:273:30
[INFO] [stdout]     |
[INFO] [stdout] 273 |             let mut action = (0, 0);
[INFO] [stdout]     |                              ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let mut num_draws = 0;
[INFO] [stdout]    |         ----^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let mut num_wins = vec![0; num_players];
[INFO] [stdout]    |         ----^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:21:13
[INFO] [stdout]    |
[INFO] [stdout] 21 |         let mut game = Game::new(size, num_players);
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num_draws`
[INFO] [stdout]   --> src/main.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let mut num_draws = 0;
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_draws`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num_wins`
[INFO] [stdout]   --> src/main.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let mut num_wins = vec![0; num_players];
[INFO] [stdout]    |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_wins`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `board`
[INFO] [stdout]   --> src/main.rs:22:14
[INFO] [stdout]    |
[INFO] [stdout] 22 |         let (board, reward, done, outcome) = game.run(false, );
[INFO] [stdout]    |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_board`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `reward`
[INFO] [stdout]   --> src/main.rs:22:21
[INFO] [stdout]    |
[INFO] [stdout] 22 |         let (board, reward, done, outcome) = game.run(false, );
[INFO] [stdout]    |                     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_reward`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `done`
[INFO] [stdout]   --> src/main.rs:22:29
[INFO] [stdout]    |
[INFO] [stdout] 22 |         let (board, reward, done, outcome) = game.run(false, );
[INFO] [stdout]    |                             ^^^^ help: if this is intentional, prefix it with an underscore: `_done`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `outcome`
[INFO] [stdout]   --> src/main.rs:22:35
[INFO] [stdout]    |
[INFO] [stdout] 22 |         let (board, reward, done, outcome) = game.run(false, );
[INFO] [stdout]    |                                   ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_outcome`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `file_path`
[INFO] [stdout]   --> src/main.rs:24:13
[INFO] [stdout]    |
[INFO] [stdout] 24 |         let file_path = format!("games/game_{}.bin", num_games);
[INFO] [stdout]    |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_file_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `RandomPlayer` is never constructed
[INFO] [stdout]  --> src/random_player.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct RandomPlayer {
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_piece_id` is never used
[INFO] [stdout]   --> src/random_player.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn get_piece_id(piece: &Piece) -> usize {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `act`, `think`, `owns_piece`, and `capture` are never used
[INFO] [stdout]   --> src/random_player.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 33 | impl RandomPlayer {
[INFO] [stdout]    | ----------------- associated items in this implementation
[INFO] [stdout] 34 |     pub fn new(id: usize, piece_type: Piece) -> RandomPlayer {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 38 |     pub fn act(&mut self, board: &mut Board, x: usize, y: usize) -> Result<(), String> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 52 |     pub fn think(&self, mut game:Game) -> (usize, usize) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 64 |     pub fn owns_piece(&self, board: &Board, x: usize, y: usize) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 68 |     pub fn capture(&mut self, board: &mut Board, x: usize, y: usize) {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `reset` and `explore` are never used
[INFO] [stdout]   --> src/game.rs:42:12
[INFO] [stdout]    |
[INFO] [stdout] 29 | impl Game {
[INFO] [stdout]    | --------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 42 |     pub fn reset(&mut self, size: usize, num_players: usize) -> Game {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 74 |     pub fn explore(&mut self, rollouts_per_move: usize) -> Vec<(usize, usize)> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 20.73s
[INFO] running `Command { std: "docker" "inspect" "0423da2ae25704a5e79e95343b7c17a963a6b1a4d9ad1ce9606677e81c5174c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0423da2ae25704a5e79e95343b7c17a963a6b1a4d9ad1ce9606677e81c5174c3", kill_on_drop: false }`
[INFO] [stdout] 0423da2ae25704a5e79e95343b7c17a963a6b1a4d9ad1ce9606677e81c5174c3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 53d8c8e482f4d8804a86ed8a914b347c9eec68722e475440a096fdefd3c7f9a5
[INFO] running `Command { std: "docker" "start" "-a" "53d8c8e482f4d8804a86ed8a914b347c9eec68722e475440a096fdefd3c7f9a5", kill_on_drop: false }`
[INFO] [stderr]    Compiling fast_pente v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `array`
[INFO] [stdout]  --> src/board.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 | use ndarray::{array, Array2, Dimension};
[INFO] [stdout]   |               ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Read` and `Write`
[INFO] [stdout]  --> src/game.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{Read, Write};
[INFO] [stdout]   |               ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]  --> src/game.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fs::File;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::random_player::get_piece_id`
[INFO] [stdout]  --> src/game.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use crate::random_player::get_piece_id;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::io;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Duration`
[INFO] [stdout]  --> src/main.rs:7:17
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::time::{Duration, Instant};
[INFO] [stdout]   |                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Dimension`
[INFO] [stdout]  --> src/board.rs:2:30
[INFO] [stdout]   |
[INFO] [stdout] 2 | use ndarray::{array, Array2, Dimension};
[INFO] [stdout]   |                              ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `row`
[INFO] [stdout]   --> src/board.rs:56:13
[INFO] [stdout]    |
[INFO] [stdout] 56 |         for row in 0..self.grid.shape()[0] {
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_row`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/random_player.rs:52:25
[INFO] [stdout]    |
[INFO] [stdout] 52 |     pub fn think(&self, mut game:Game) -> (usize, usize) {
[INFO] [stdout]    |                         ----^^^^
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/mcts_player.rs:35:13
[INFO] [stdout]    |
[INFO] [stdout] 35 |         let mut valid_actions = game.board.get_moves();
[INFO] [stdout]    |             ----^^^^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/mcts_player.rs:45:17
[INFO] [stdout]    |
[INFO] [stdout] 45 |             let mut win_diff = winner_0_count as f32 - winner_1_count as f32;
[INFO] [stdout]    |                 ----^^^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/mcts_player.rs:41:14
[INFO] [stdout]    |
[INFO] [stdout] 41 |         for (i, action) in valid_actions.iter().enumerate() {
[INFO] [stdout]    |              ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `is_draw_count`
[INFO] [stdout]   --> src/mcts_player.rs:43:50
[INFO] [stdout]    |
[INFO] [stdout] 43 |             let (winner_0_count, winner_1_count, is_draw_count) = game.rollout(self.num_rollouts);
[INFO] [stdout]    |                                                  ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_is_draw_count`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num_players`
[INFO] [stdout]   --> src/game.rs:31:29
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn new(size: usize, num_players: usize) -> Game {
[INFO] [stdout]    |                             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_players`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num_players`
[INFO] [stdout]   --> src/game.rs:42:42
[INFO] [stdout]    |
[INFO] [stdout] 42 |     pub fn reset(&mut self, size: usize, num_players: usize) -> Game {
[INFO] [stdout]    |                                          ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_players`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/game.rs:60:17
[INFO] [stdout]    |
[INFO] [stdout] 60 |             let mut game = self.clone();
[INFO] [stdout]    |                 ----^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `board`
[INFO] [stdout]   --> src/game.rs:61:18
[INFO] [stdout]    |
[INFO] [stdout] 61 |             let (board, reward, done, outcome) = game.run(true);
[INFO] [stdout]    |                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_board`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `reward`
[INFO] [stdout]   --> src/game.rs:61:25
[INFO] [stdout]    |
[INFO] [stdout] 61 |             let (board, reward, done, outcome) = game.run(true);
[INFO] [stdout]    |                         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_reward`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `done`
[INFO] [stdout]   --> src/game.rs:61:33
[INFO] [stdout]    |
[INFO] [stdout] 61 |             let (board, reward, done, outcome) = game.run(true);
[INFO] [stdout]    |                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_done`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/game.rs:75:13
[INFO] [stdout]    |
[INFO] [stdout] 75 |         let mut valid_actions = self.board.get_moves();
[INFO] [stdout]    |             ----^^^^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `action`
[INFO] [stdout]   --> src/game.rs:77:17
[INFO] [stdout]    |
[INFO] [stdout] 77 |         for (i, action) in valid_actions.iter().enumerate() {
[INFO] [stdout]    |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_action`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `is_draw_count`
[INFO] [stdout]   --> src/game.rs:79:50
[INFO] [stdout]    |
[INFO] [stdout] 79 |             let (winner_0_count, winner_1_count, is_draw_count) = self.rollout(rollouts_per_move);
[INFO] [stdout]    |                                                  ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_is_draw_count`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/game.rs:279:21
[INFO] [stdout]     |
[INFO] [stdout] 279 |                 let mut valid_actions = self.board.get_moves();
[INFO] [stdout]     |                     ----^^^^^^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `action` is never read
[INFO] [stdout]    --> src/game.rs:273:30
[INFO] [stdout]     |
[INFO] [stdout] 273 |             let mut action = (0, 0);
[INFO] [stdout]     |                              ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let mut num_draws = 0;
[INFO] [stdout]    |         ----^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let mut num_wins = vec![0; num_players];
[INFO] [stdout]    |         ----^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:21:13
[INFO] [stdout]    |
[INFO] [stdout] 21 |         let mut game = Game::new(size, num_players);
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num_draws`
[INFO] [stdout]   --> src/main.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let mut num_draws = 0;
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_draws`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num_wins`
[INFO] [stdout]   --> src/main.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let mut num_wins = vec![0; num_players];
[INFO] [stdout]    |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_wins`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `board`
[INFO] [stdout]   --> src/main.rs:22:14
[INFO] [stdout]    |
[INFO] [stdout] 22 |         let (board, reward, done, outcome) = game.run(false, );
[INFO] [stdout]    |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_board`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `reward`
[INFO] [stdout]   --> src/main.rs:22:21
[INFO] [stdout]    |
[INFO] [stdout] 22 |         let (board, reward, done, outcome) = game.run(false, );
[INFO] [stdout]    |                     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_reward`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `done`
[INFO] [stdout]   --> src/main.rs:22:29
[INFO] [stdout]    |
[INFO] [stdout] 22 |         let (board, reward, done, outcome) = game.run(false, );
[INFO] [stdout]    |                             ^^^^ help: if this is intentional, prefix it with an underscore: `_done`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `outcome`
[INFO] [stdout]   --> src/main.rs:22:35
[INFO] [stdout]    |
[INFO] [stdout] 22 |         let (board, reward, done, outcome) = game.run(false, );
[INFO] [stdout]    |                                   ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_outcome`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `file_path`
[INFO] [stdout]   --> src/main.rs:24:13
[INFO] [stdout]    |
[INFO] [stdout] 24 |         let file_path = format!("games/game_{}.bin", num_games);
[INFO] [stdout]    |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_file_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_piece_id` is never used
[INFO] [stdout]   --> src/random_player.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn get_piece_id(piece: &Piece) -> usize {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `think` is never used
[INFO] [stdout]   --> src/random_player.rs:52:12
[INFO] [stdout]    |
[INFO] [stdout] 33 | impl RandomPlayer {
[INFO] [stdout]    | ----------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 52 |     pub fn think(&self, mut game:Game) -> (usize, usize) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `reset` and `explore` are never used
[INFO] [stdout]   --> src/game.rs:42:12
[INFO] [stdout]    |
[INFO] [stdout] 29 | impl Game {
[INFO] [stdout]    | --------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 42 |     pub fn reset(&mut self, size: usize, num_players: usize) -> Game {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 74 |     pub fn explore(&mut self, rollouts_per_move: usize) -> Vec<(usize, usize)> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.65s
[INFO] running `Command { std: "docker" "inspect" "53d8c8e482f4d8804a86ed8a914b347c9eec68722e475440a096fdefd3c7f9a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "53d8c8e482f4d8804a86ed8a914b347c9eec68722e475440a096fdefd3c7f9a5", kill_on_drop: false }`
[INFO] [stdout] 53d8c8e482f4d8804a86ed8a914b347c9eec68722e475440a096fdefd3c7f9a5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 760a792b0b4325282168d7f7f2600a58cf921b09eb3567dc15a7c824fe1c95a6
[INFO] running `Command { std: "docker" "start" "-a" "760a792b0b4325282168d7f7f2600a58cf921b09eb3567dc15a7c824fe1c95a6", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `array`
[INFO] [stderr]  --> src/board.rs:2:15
[INFO] [stderr]   |
[INFO] [stderr] 2 | use ndarray::{array, Array2, Dimension};
[INFO] [stderr]   |               ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Read` and `Write`
[INFO] [stderr]  --> src/game.rs:1:15
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::io::{Read, Write};
[INFO] [stderr]   |               ^^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs::File`
[INFO] [stderr]  --> src/game.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::fs::File;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::random_player::get_piece_id`
[INFO] [stderr]  --> src/game.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use crate::random_player::get_piece_id;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io`
[INFO] [stderr]  --> src/main.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::io;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Duration`
[INFO] [stderr]  --> src/main.rs:7:17
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::time::{Duration, Instant};
[INFO] [stderr]   |                 ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Dimension`
[INFO] [stderr]  --> src/board.rs:2:30
[INFO] [stderr]   |
[INFO] [stderr] 2 | use ndarray::{array, Array2, Dimension};
[INFO] [stderr]   |                              ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `row`
[INFO] [stderr]   --> src/board.rs:56:13
[INFO] [stderr]    |
[INFO] [stderr] 56 |         for row in 0..self.grid.shape()[0] {
[INFO] [stderr]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_row`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/random_player.rs:52:25
[INFO] [stderr]    |
[INFO] [stderr] 52 |     pub fn think(&self, mut game:Game) -> (usize, usize) {
[INFO] [stderr]    |                         ----^^^^
[INFO] [stderr]    |                         |
[INFO] [stderr]    |                         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/mcts_player.rs:35:13
[INFO] [stderr]    |
[INFO] [stderr] 35 |         let mut valid_actions = game.board.get_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/mcts_player.rs:45:17
[INFO] [stderr]    |
[INFO] [stderr] 45 |             let mut win_diff = winner_0_count as f32 - winner_1_count as f32;
[INFO] [stderr]    |                 ----^^^^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/mcts_player.rs:41:14
[INFO] [stderr]    |
[INFO] [stderr] 41 |         for (i, action) in valid_actions.iter().enumerate() {
[INFO] [stderr]    |              ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `is_draw_count`
[INFO] [stderr]   --> src/mcts_player.rs:43:50
[INFO] [stderr]    |
[INFO] [stderr] 43 |             let (winner_0_count, winner_1_count, is_draw_count) = game.rollout(self.num_rollouts);
[INFO] [stderr]    |                                                  ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_is_draw_count`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `num_players`
[INFO] [stderr]   --> src/game.rs:31:29
[INFO] [stderr]    |
[INFO] [stderr] 31 |     pub fn new(size: usize, num_players: usize) -> Game {
[INFO] [stderr]    |                             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_players`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `num_players`
[INFO] [stderr]   --> src/game.rs:42:42
[INFO] [stderr]    |
[INFO] [stderr] 42 |     pub fn reset(&mut self, size: usize, num_players: usize) -> Game {
[INFO] [stderr]    |                                          ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_players`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/game.rs:60:17
[INFO] [stderr]    |
[INFO] [stderr] 60 |             let mut game = self.clone();
[INFO] [stderr]    |                 ----^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `board`
[INFO] [stderr]   --> src/game.rs:61:18
[INFO] [stderr]    |
[INFO] [stderr] 61 |             let (board, reward, done, outcome) = game.run(true);
[INFO] [stderr]    |                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_board`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `reward`
[INFO] [stderr]   --> src/game.rs:61:25
[INFO] [stderr]    |
[INFO] [stderr] 61 |             let (board, reward, done, outcome) = game.run(true);
[INFO] [stderr]    |                         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_reward`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `done`
[INFO] [stderr]   --> src/game.rs:61:33
[INFO] [stderr]    |
[INFO] [stderr] 61 |             let (board, reward, done, outcome) = game.run(true);
[INFO] [stderr]    |                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_done`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/game.rs:75:13
[INFO] [stderr]    |
[INFO] [stderr] 75 |         let mut valid_actions = self.board.get_moves();
[INFO] [stderr]    |             ----^^^^^^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `action`
[INFO] [stderr]   --> src/game.rs:77:17
[INFO] [stderr]    |
[INFO] [stderr] 77 |         for (i, action) in valid_actions.iter().enumerate() {
[INFO] [stderr]    |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_action`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `is_draw_count`
[INFO] [stderr]   --> src/game.rs:79:50
[INFO] [stderr]    |
[INFO] [stderr] 79 |             let (winner_0_count, winner_1_count, is_draw_count) = self.rollout(rollouts_per_move);
[INFO] [stderr]    |                                                  ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_is_draw_count`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/game.rs:279:21
[INFO] [stderr]     |
[INFO] [stderr] 279 |                 let mut valid_actions = self.board.get_moves();
[INFO] [stderr]     |                     ----^^^^^^^^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `action` is never read
[INFO] [stderr]    --> src/game.rs:273:30
[INFO] [stderr]     |
[INFO] [stderr] 273 |             let mut action = (0, 0);
[INFO] [stderr]     |                              ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:17:9
[INFO] [stderr]    |
[INFO] [stderr] 17 |     let mut num_draws = 0;
[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/main.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |     let mut num_wins = vec![0; num_players];
[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/main.rs:21:13
[INFO] [stderr]    |
[INFO] [stderr] 21 |         let mut game = Game::new(size, num_players);
[INFO] [stderr]    |             ----^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `num_draws`
[INFO] [stderr]   --> src/main.rs:17:9
[INFO] [stderr]    |
[INFO] [stderr] 17 |     let mut num_draws = 0;
[INFO] [stderr]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_draws`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `num_wins`
[INFO] [stderr]   --> src/main.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |     let mut num_wins = vec![0; num_players];
[INFO] [stderr]    |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_wins`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `board`
[INFO] [stderr]   --> src/main.rs:22:14
[INFO] [stderr]    |
[INFO] [stderr] 22 |         let (board, reward, done, outcome) = game.run(false, );
[INFO] [stderr]    |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_board`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `reward`
[INFO] [stderr]   --> src/main.rs:22:21
[INFO] [stderr]    |
[INFO] [stderr] 22 |         let (board, reward, done, outcome) = game.run(false, );
[INFO] [stderr]    |                     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_reward`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `done`
[INFO] [stderr]   --> src/main.rs:22:29
[INFO] [stderr]    |
[INFO] [stderr] 22 |         let (board, reward, done, outcome) = game.run(false, );
[INFO] [stderr]    |                             ^^^^ help: if this is intentional, prefix it with an underscore: `_done`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `outcome`
[INFO] [stderr]   --> src/main.rs:22:35
[INFO] [stderr]    |
[INFO] [stderr] 22 |         let (board, reward, done, outcome) = game.run(false, );
[INFO] [stderr]    |                                   ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_outcome`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `file_path`
[INFO] [stderr]   --> src/main.rs:24:13
[INFO] [stderr]    |
[INFO] [stderr] 24 |         let file_path = format!("games/game_{}.bin", num_games);
[INFO] [stderr]    |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_file_path`
[INFO] [stderr] 
[INFO] [stderr] warning: function `get_piece_id` is never used
[INFO] [stderr]   --> src/random_player.rs:23:8
[INFO] [stderr]    |
[INFO] [stderr] 23 | pub fn get_piece_id(piece: &Piece) -> usize {
[INFO] [stderr]    |        ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method `think` is never used
[INFO] [stderr]   --> src/random_player.rs:52:12
[INFO] [stderr]    |
[INFO] [stderr] 33 | impl RandomPlayer {
[INFO] [stderr]    | ----------------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 52 |     pub fn think(&self, mut game:Game) -> (usize, usize) {
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: methods `reset` and `explore` are never used
[INFO] [stderr]   --> src/game.rs:42:12
[INFO] [stderr]    |
[INFO] [stderr] 29 | impl Game {
[INFO] [stderr]    | --------- methods in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 42 |     pub fn reset(&mut self, size: usize, num_players: usize) -> Game {
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 74 |     pub fn explore(&mut self, rollouts_per_move: usize) -> Vec<(usize, usize)> {
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `fast_pente` (bin "fast_pente" test) generated 37 warnings (run `cargo fix --bin "fast_pente" -p fast_pente --tests` to apply 32 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/fast_pente-8c42e953aad46f10)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test random_player::tests::test_player_capture ... ok
[INFO] [stdout] test random_player::tests::test_player_act ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "760a792b0b4325282168d7f7f2600a58cf921b09eb3567dc15a7c824fe1c95a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "760a792b0b4325282168d7f7f2600a58cf921b09eb3567dc15a7c824fe1c95a6", kill_on_drop: false }`
[INFO] [stdout] 760a792b0b4325282168d7f7f2600a58cf921b09eb3567dc15a7c824fe1c95a6
