[INFO] cloning repository https://github.com/zholiferova/Tic-tac-toe-Rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zholiferova/Tic-tac-toe-Rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzholiferova%2FTic-tac-toe-Rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzholiferova%2FTic-tac-toe-Rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 94e63347636977bdfaac02ec0eb2e893537db0d0
[INFO] testing zholiferova/Tic-tac-toe-Rust against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzholiferova%2FTic-tac-toe-Rust" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/zholiferova/Tic-tac-toe-Rust
[INFO] finished tweaking git repo https://github.com/zholiferova/Tic-tac-toe-Rust
[INFO] tweaked toml for git repo https://github.com/zholiferova/Tic-tac-toe-Rust written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/zholiferova/Tic-tac-toe-Rust on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/zholiferova/Tic-tac-toe-Rust 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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded iter-read v0.3.1
[INFO] [stderr]   Downloaded portable-atomic-util v0.2.3
[INFO] [stderr]   Downloaded serde_derive v1.0.214
[INFO] [stderr]   Downloaded serde-pickle v1.1.1
[INFO] [stderr]   Downloaded serde v1.0.214
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6aefefa77b547b9bd55072efe370ba1800ce3c4ad52f6be469f0718c1e107de0
[INFO] running `Command { std: "docker" "start" "-a" "6aefefa77b547b9bd55072efe370ba1800ce3c4ad52f6be469f0718c1e107de0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6aefefa77b547b9bd55072efe370ba1800ce3c4ad52f6be469f0718c1e107de0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6aefefa77b547b9bd55072efe370ba1800ce3c4ad52f6be469f0718c1e107de0", kill_on_drop: false }`
[INFO] [stdout] 6aefefa77b547b9bd55072efe370ba1800ce3c4ad52f6be469f0718c1e107de0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d62cca6ac7205a48a4919d522fad65218390133565db3e4a67a9572fed2216e5
[INFO] running `Command { std: "docker" "start" "-a" "d62cca6ac7205a48a4919d522fad65218390133565db3e4a67a9572fed2216e5", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.161
[INFO] [stderr]    Compiling serde v1.0.214
[INFO] [stderr]    Compiling anyhow v1.0.92
[INFO] [stderr]    Compiling matrixmultiply v0.3.9
[INFO] [stderr]    Compiling serde_json v1.0.132
[INFO] [stderr]    Compiling iter-read v0.3.1
[INFO] [stderr]    Compiling memchr v2.7.4
[INFO] [stderr]    Compiling syn v2.0.86
[INFO] [stderr]    Compiling num-complex v0.4.6
[INFO] [stderr]    Compiling chrono v0.4.38
[INFO] [stderr]    Compiling getrandom v0.2.15
[INFO] [stderr]    Compiling ndarray v0.16.1
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]    Compiling serde_derive v1.0.214
[INFO] [stderr]    Compiling zerocopy v0.7.35
[INFO] [stderr]    Compiling ppv-lite86 v0.2.20
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling serde-pickle v1.1.1
[INFO] [stderr]    Compiling learn_game v0.1.0 (/opt/rustwide/workdir/learn_game)
[INFO] [stdout] warning: unused import: `anyhow::Error`
[INFO] [stdout]  --> learn_game/src/lib.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use anyhow::Error;
[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 import: `ndarray::prelude::*`
[INFO] [stdout]  --> learn_game/src/lib.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use ndarray::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Rng` and `thread_rng`
[INFO] [stdout]  --> learn_game/src/lib.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | use rand::{thread_rng, Rng};
[INFO] [stdout]   |            ^^^^^^^^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Deserializer`, `MapAccess`, `SeqAccess`, `Visitor`, and `self`
[INFO] [stdout]  --> learn_game/src/lib.rs:9:17
[INFO] [stdout]   |
[INFO] [stdout] 9 | use serde::de::{self, Deserializer, MapAccess, SeqAccess, Visitor};
[INFO] [stdout]   |                 ^^^^  ^^^^^^^^^^^^  ^^^^^^^^^  ^^^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `SerializeMap`, `SerializeSeq`, and `Serializer`
[INFO] [stdout]   --> learn_game/src/lib.rs:10:18
[INFO] [stdout]    |
[INFO] [stdout] 10 | use serde::ser::{SerializeMap, SerializeSeq, Serializer};
[INFO] [stdout]    |                  ^^^^^^^^^^^^  ^^^^^^^^^^^^  ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Deserialize` and `Serialize`
[INFO] [stdout]   --> learn_game/src/lib.rs:11:13
[INFO] [stdout]    |
[INFO] [stdout] 11 | use serde::{Deserialize, Serialize};
[INFO] [stdout]    |             ^^^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Cell`
[INFO] [stdout]   --> learn_game/src/lib.rs:12:17
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::cell::{Cell, RefCell};
[INFO] [stdout]    |                 ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]   --> learn_game/src/lib.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::collections::HashMap;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]   --> learn_game/src/lib.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::fs::File;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::prelude::*`
[INFO] [stdout]   --> learn_game/src/lib.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use std::io::prelude::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::BufReader`
[INFO] [stdout]   --> learn_game/src/lib.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use std::io::BufReader;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter::Iterator`
[INFO] [stdout]   --> learn_game/src/lib.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use std::iter::Iterator;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::marker::PhantomData`
[INFO] [stdout]   --> learn_game/src/lib.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use std::marker::PhantomData;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `DerefMut` and `Deref`
[INFO] [stdout]   --> learn_game/src/lib.rs:19:16
[INFO] [stdout]    |
[INFO] [stdout] 19 | use std::ops::{Deref, DerefMut};
[INFO] [stdout]    |                ^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `PathBuf`
[INFO] [stdout]   --> learn_game/src/lib.rs:20:23
[INFO] [stdout]    |
[INFO] [stdout] 20 | use std::path::{Path, PathBuf};
[INFO] [stdout]    |                       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]   --> learn_game/src/lib.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | use std::thread;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `fmt` and `io`
[INFO] [stdout]   --> learn_game/src/lib.rs:22:11
[INFO] [stdout]    |
[INFO] [stdout] 22 | use std::{fmt, io, mem};
[INFO] [stdout]    |           ^^^  ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Cell`
[INFO] [stdout]  --> learn_game/src/config.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cell::{Cell, RefCell};
[INFO] [stdout]   |                 ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::DerefMut`
[INFO] [stdout]  --> learn_game/src/players.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::ops::DerefMut;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::board::Board`
[INFO] [stdout]  --> learn_game/src/q_table.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::board::Board;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `board`
[INFO] [stdout]    --> learn_game/src/players.rs:129:29
[INFO] [stdout]     |
[INFO] [stdout] 129 |     fn choose_move_k(&self, board: &Board, q: &mut QTable) -> (usize, usize){
[INFO] [stdout]     |                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_board`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `q`
[INFO] [stdout]    --> learn_game/src/players.rs:129:44
[INFO] [stdout]     |
[INFO] [stdout] 129 |     fn choose_move_k(&self, board: &Board, q: &mut QTable) -> (usize, usize){
[INFO] [stdout]     |                                            ^ help: if this is intentional, prefix it with an underscore: `_q`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `q`
[INFO] [stdout]    --> learn_game/src/players.rs:287:42
[INFO] [stdout]     |
[INFO] [stdout] 287 |     fn choose_move(&self, board: &Board, q: &mut QTable) -> (usize, usize) {
[INFO] [stdout]     |                                          ^ help: if this is intentional, prefix it with an underscore: `_q`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `IsGameOver`
[INFO] [stdout]    --> learn_game/src/players.rs:352:13
[INFO] [stdout]     |
[INFO] [stdout] 352 |             IsGameOver => unreachable!(),
[INFO] [stdout]     |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_IsGameOver`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `reward` is never read
[INFO] [stdout]    --> learn_game/src/lib.rs:120:38
[INFO] [stdout]     |
[INFO] [stdout] 120 |                     let mut reward = 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: value assigned to `reward` is never read
[INFO] [stdout]    --> learn_game/src/lib.rs:184:38
[INFO] [stdout]     |
[INFO] [stdout] 184 |                     let mut reward = 0.0;
[INFO] [stdout]     |                                      ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `is_q_saved`
[INFO] [stdout]    --> learn_game/src/lib.rs:226:13
[INFO] [stdout]     |
[INFO] [stdout] 226 |         let is_q_saved = q_table::q_table_to_disk(&path, q.as_deref().unwrap());
[INFO] [stdout]     |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_is_q_saved`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `is_q_saved`
[INFO] [stdout]    --> learn_game/src/lib.rs:249:13
[INFO] [stdout]     |
[INFO] [stdout] 249 |         let is_q_saved = q_table::q_table_to_disk(&path, q.as_deref().unwrap());
[INFO] [stdout]     |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_is_q_saved`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> learn_game/src/lib.rs:253:9
[INFO] [stdout]     |
[INFO] [stdout] 253 |     let mut rl_max = Box::new(ComputerPlayerRLmax {
[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]    --> learn_game/src/lib.rs:257:9
[INFO] [stdout]     |
[INFO] [stdout] 257 |     let mut rl_min = Box::new(ComputerPlayerRLmin {
[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]    --> learn_game/src/lib.rs:267:9
[INFO] [stdout]     |
[INFO] [stdout] 267 |     let mut rl_max = Box::new(ComputerPlayerRLmax {
[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]    --> learn_game/src/lib.rs:272:9
[INFO] [stdout]     |
[INFO] [stdout] 272 |     let mut q_max = RefCell::new(q_table::q_table_from_disk_pickle(&path)
[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]    --> learn_game/src/lib.rs:274:9
[INFO] [stdout]     |
[INFO] [stdout] 274 |     let mut rl_min = Box::new(MinimaxPlayer {
[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]    --> learn_game/src/lib.rs:365:9
[INFO] [stdout]     |
[INFO] [stdout] 365 |     let mut q_max = RefCell::new(q_table::q_table_from_disk_pickle(&path)
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `learn_episode_with_minimax` and `learn_q_table_with_minimax` are never used
[INFO] [stdout]    --> learn_game/src/lib.rs:140:8
[INFO] [stdout]     |
[INFO] [stdout]  37 | impl Game {
[INFO] [stdout]     | --------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 140 |     fn learn_episode_with_minimax(&mut self, q: Option<&mut QTable>) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 228 |     fn learn_q_table_with_minimax(&mut self, mut q: Option<&mut QTable>) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> learn_game/src/players.rs:98:21
[INFO] [stdout]    |
[INFO] [stdout] 98 |                     io::stdin().read_line(&mut garbage);
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 98 |                     let _ = io::stdin().read_line(&mut garbage);
[INFO] [stdout]    |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> learn_game/src/players.rs:112:21
[INFO] [stdout]     |
[INFO] [stdout] 112 |                     io::stdin().read_line(&mut garbage);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 112 |                     let _ = io::stdin().read_line(&mut garbage);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> learn_game/src/players.rs:168:13
[INFO] [stdout]     |
[INFO] [stdout] 168 |             io::stdin().read_line(&mut garbage_mark);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 168 |             let _ = io::stdin().read_line(&mut garbage_mark);
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `isMax` should have a snake case name
[INFO] [stdout]    --> learn_game/src/players.rs:323:70
[INFO] [stdout]     |
[INFO] [stdout] 323 |     pub fn minimax (mut state: GameState, mark: &Marks, depth: &i32, isMax: bool) -> i32 {
[INFO] [stdout]     |                                                                      ^^^^^ help: convert the identifier to snake case: `is_max`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `IsGameOver` should have a snake case name
[INFO] [stdout]    --> learn_game/src/players.rs:352:13
[INFO] [stdout]     |
[INFO] [stdout] 352 |             IsGameOver => unreachable!(),
[INFO] [stdout]     |             ^^^^^^^^^^ help: convert the identifier to snake case: `is_game_over`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling game v0.1.0 (/opt/rustwide/workdir/game)
[INFO] [stdout] warning: unused imports: `ComputerPlayerRLmax`, `HumanPlayer`, `Marks`, and `MinimaxPlayer`
[INFO] [stdout]  --> game/src/main.rs:1:27
[INFO] [stdout]   |
[INFO] [stdout] 1 | use learn_game::players::{ComputerPlayerRLmax, HumanPlayer, MinimaxPlayer, Marks};
[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 import: `learn_game::q_table::QTable`
[INFO] [stdout]  --> game/src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use learn_game::q_table::QTable;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `learn_game::Game`
[INFO] [stdout]  --> game/src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use learn_game::Game;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `learn_game::board::IsGameOver`
[INFO] [stdout]  --> game/src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use learn_game::board::IsGameOver;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 18.49s
[INFO] running `Command { std: "docker" "inspect" "d62cca6ac7205a48a4919d522fad65218390133565db3e4a67a9572fed2216e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d62cca6ac7205a48a4919d522fad65218390133565db3e4a67a9572fed2216e5", kill_on_drop: false }`
[INFO] [stdout] d62cca6ac7205a48a4919d522fad65218390133565db3e4a67a9572fed2216e5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c57c1d1272ae5b2a5494e2cf23983580c3c4e6aee47703aa36261be0488d90f2
[INFO] running `Command { std: "docker" "start" "-a" "c57c1d1272ae5b2a5494e2cf23983580c3c4e6aee47703aa36261be0488d90f2", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `anyhow::Error`
[INFO] [stdout]  --> learn_game/src/lib.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use anyhow::Error;
[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 import: `ndarray::prelude::*`
[INFO] [stdout]  --> learn_game/src/lib.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use ndarray::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Rng` and `thread_rng`
[INFO] [stdout]  --> learn_game/src/lib.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | use rand::{thread_rng, Rng};
[INFO] [stdout]   |            ^^^^^^^^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Deserializer`, `MapAccess`, `SeqAccess`, `Visitor`, and `self`
[INFO] [stdout]  --> learn_game/src/lib.rs:9:17
[INFO] [stdout]   |
[INFO] [stdout] 9 | use serde::de::{self, Deserializer, MapAccess, SeqAccess, Visitor};
[INFO] [stdout]   |                 ^^^^  ^^^^^^^^^^^^  ^^^^^^^^^  ^^^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `SerializeMap`, `SerializeSeq`, and `Serializer`
[INFO] [stdout]   --> learn_game/src/lib.rs:10:18
[INFO] [stdout]    |
[INFO] [stdout] 10 | use serde::ser::{SerializeMap, SerializeSeq, Serializer};
[INFO] [stdout]    |                  ^^^^^^^^^^^^  ^^^^^^^^^^^^  ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Deserialize` and `Serialize`
[INFO] [stdout]   --> learn_game/src/lib.rs:11:13
[INFO] [stdout]    |
[INFO] [stdout] 11 | use serde::{Deserialize, Serialize};
[INFO] [stdout]    |             ^^^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Cell`
[INFO] [stdout]   --> learn_game/src/lib.rs:12:17
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::cell::{Cell, RefCell};
[INFO] [stdout]    |                 ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]   --> learn_game/src/lib.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::collections::HashMap;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]   --> learn_game/src/lib.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::fs::File;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::prelude::*`
[INFO] [stdout]   --> learn_game/src/lib.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use std::io::prelude::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::BufReader`
[INFO] [stdout]   --> learn_game/src/lib.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use std::io::BufReader;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter::Iterator`
[INFO] [stdout]   --> learn_game/src/lib.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use std::iter::Iterator;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::marker::PhantomData`
[INFO] [stdout]   --> learn_game/src/lib.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use std::marker::PhantomData;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `DerefMut` and `Deref`
[INFO] [stdout]   --> learn_game/src/lib.rs:19:16
[INFO] [stdout]    |
[INFO] [stdout] 19 | use std::ops::{Deref, DerefMut};
[INFO] [stdout]    |                ^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `PathBuf`
[INFO] [stdout]   --> learn_game/src/lib.rs:20:23
[INFO] [stdout]    |
[INFO] [stdout] 20 | use std::path::{Path, PathBuf};
[INFO] [stdout]    |                       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]   --> learn_game/src/lib.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | use std::thread;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `fmt` and `io`
[INFO] [stdout]   --> learn_game/src/lib.rs:22:11
[INFO] [stdout]    |
[INFO] [stdout] 22 | use std::{fmt, io, mem};
[INFO] [stdout]    |           ^^^  ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Cell`
[INFO] [stdout]  --> learn_game/src/config.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cell::{Cell, RefCell};
[INFO] [stdout]   |                 ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::DerefMut`
[INFO] [stdout]  --> learn_game/src/players.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::ops::DerefMut;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::board::Board`
[INFO] [stdout]  --> learn_game/src/q_table.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::board::Board;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `board`
[INFO] [stdout]    --> learn_game/src/players.rs:129:29
[INFO] [stdout]     |
[INFO] [stdout] 129 |     fn choose_move_k(&self, board: &Board, q: &mut QTable) -> (usize, usize){
[INFO] [stdout]     |                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_board`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `q`
[INFO] [stdout]    --> learn_game/src/players.rs:129:44
[INFO] [stdout]     |
[INFO] [stdout] 129 |     fn choose_move_k(&self, board: &Board, q: &mut QTable) -> (usize, usize){
[INFO] [stdout]     |                                            ^ help: if this is intentional, prefix it with an underscore: `_q`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `q`
[INFO] [stdout]    --> learn_game/src/players.rs:287:42
[INFO] [stdout]     |
[INFO] [stdout] 287 |     fn choose_move(&self, board: &Board, q: &mut QTable) -> (usize, usize) {
[INFO] [stdout]     |                                          ^ help: if this is intentional, prefix it with an underscore: `_q`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `IsGameOver`
[INFO] [stdout]    --> learn_game/src/players.rs:352:13
[INFO] [stdout]     |
[INFO] [stdout] 352 |             IsGameOver => unreachable!(),
[INFO] [stdout]     |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_IsGameOver`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `reward` is never read
[INFO] [stdout]    --> learn_game/src/lib.rs:120:38
[INFO] [stdout]     |
[INFO] [stdout] 120 |                     let mut reward = 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: value assigned to `reward` is never read
[INFO] [stdout]    --> learn_game/src/lib.rs:184:38
[INFO] [stdout]     |
[INFO] [stdout] 184 |                     let mut reward = 0.0;
[INFO] [stdout]     |                                      ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `is_q_saved`
[INFO] [stdout]    --> learn_game/src/lib.rs:226:13
[INFO] [stdout]     |
[INFO] [stdout] 226 |         let is_q_saved = q_table::q_table_to_disk(&path, q.as_deref().unwrap());
[INFO] [stdout]     |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_is_q_saved`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `is_q_saved`
[INFO] [stdout]    --> learn_game/src/lib.rs:249:13
[INFO] [stdout]     |
[INFO] [stdout] 249 |         let is_q_saved = q_table::q_table_to_disk(&path, q.as_deref().unwrap());
[INFO] [stdout]     |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_is_q_saved`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> learn_game/src/lib.rs:253:9
[INFO] [stdout]     |
[INFO] [stdout] 253 |     let mut rl_max = Box::new(ComputerPlayerRLmax {
[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]    --> learn_game/src/lib.rs:257:9
[INFO] [stdout]     |
[INFO] [stdout] 257 |     let mut rl_min = Box::new(ComputerPlayerRLmin {
[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]    --> learn_game/src/lib.rs:267:9
[INFO] [stdout]     |
[INFO] [stdout] 267 |     let mut rl_max = Box::new(ComputerPlayerRLmax {
[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]    --> learn_game/src/lib.rs:272:9
[INFO] [stdout]     |
[INFO] [stdout] 272 |     let mut q_max = RefCell::new(q_table::q_table_from_disk_pickle(&path)
[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]    --> learn_game/src/lib.rs:274:9
[INFO] [stdout]     |
[INFO] [stdout] 274 |     let mut rl_min = Box::new(MinimaxPlayer {
[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]    --> learn_game/src/lib.rs:365:9
[INFO] [stdout]     |
[INFO] [stdout] 365 |     let mut q_max = RefCell::new(q_table::q_table_from_disk_pickle(&path)
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `learn_episode_with_minimax` and `learn_q_table_with_minimax` are never used
[INFO] [stdout]    --> learn_game/src/lib.rs:140:8
[INFO] [stdout]     |
[INFO] [stdout]  37 | impl Game {
[INFO] [stdout]     | --------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 140 |     fn learn_episode_with_minimax(&mut self, q: Option<&mut QTable>) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 228 |     fn learn_q_table_with_minimax(&mut self, mut q: Option<&mut QTable>) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> learn_game/src/players.rs:98:21
[INFO] [stdout]    |
[INFO] [stdout] 98 |                     io::stdin().read_line(&mut garbage);
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 98 |                     let _ = io::stdin().read_line(&mut garbage);
[INFO] [stdout]    |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> learn_game/src/players.rs:112:21
[INFO] [stdout]     |
[INFO] [stdout] 112 |                     io::stdin().read_line(&mut garbage);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 112 |                     let _ = io::stdin().read_line(&mut garbage);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> learn_game/src/players.rs:168:13
[INFO] [stdout]     |
[INFO] [stdout] 168 |             io::stdin().read_line(&mut garbage_mark);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 168 |             let _ = io::stdin().read_line(&mut garbage_mark);
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `isMax` should have a snake case name
[INFO] [stdout]    --> learn_game/src/players.rs:323:70
[INFO] [stdout]     |
[INFO] [stdout] 323 |     pub fn minimax (mut state: GameState, mark: &Marks, depth: &i32, isMax: bool) -> i32 {
[INFO] [stdout]     |                                                                      ^^^^^ help: convert the identifier to snake case: `is_max`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `IsGameOver` should have a snake case name
[INFO] [stdout]    --> learn_game/src/players.rs:352:13
[INFO] [stdout]     |
[INFO] [stdout] 352 |             IsGameOver => unreachable!(),
[INFO] [stdout]     |             ^^^^^^^^^^ help: convert the identifier to snake case: `is_game_over`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling learn_game v0.1.0 (/opt/rustwide/workdir/learn_game)
[INFO] [stderr]    Compiling game v0.1.0 (/opt/rustwide/workdir/game)
[INFO] [stdout] warning: unused imports: `ComputerPlayerRLmax`, `HumanPlayer`, `Marks`, and `MinimaxPlayer`
[INFO] [stdout]  --> game/src/main.rs:1:27
[INFO] [stdout]   |
[INFO] [stdout] 1 | use learn_game::players::{ComputerPlayerRLmax, HumanPlayer, MinimaxPlayer, Marks};
[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 import: `learn_game::q_table::QTable`
[INFO] [stdout]  --> game/src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use learn_game::q_table::QTable;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `learn_game::Game`
[INFO] [stdout]  --> game/src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use learn_game::Game;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `learn_game::board::IsGameOver`
[INFO] [stdout]  --> game/src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use learn_game::board::IsGameOver;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `anyhow::Error`
[INFO] [stdout]  --> learn_game/src/lib.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use anyhow::Error;
[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 import: `ndarray::prelude::*`
[INFO] [stdout]  --> learn_game/src/lib.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use ndarray::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Rng` and `thread_rng`
[INFO] [stdout]  --> learn_game/src/lib.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | use rand::{thread_rng, Rng};
[INFO] [stdout]   |            ^^^^^^^^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Deserializer`, `MapAccess`, `SeqAccess`, `Visitor`, and `self`
[INFO] [stdout]  --> learn_game/src/lib.rs:9:17
[INFO] [stdout]   |
[INFO] [stdout] 9 | use serde::de::{self, Deserializer, MapAccess, SeqAccess, Visitor};
[INFO] [stdout]   |                 ^^^^  ^^^^^^^^^^^^  ^^^^^^^^^  ^^^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `SerializeMap`, `SerializeSeq`, and `Serializer`
[INFO] [stdout]   --> learn_game/src/lib.rs:10:18
[INFO] [stdout]    |
[INFO] [stdout] 10 | use serde::ser::{SerializeMap, SerializeSeq, Serializer};
[INFO] [stdout]    |                  ^^^^^^^^^^^^  ^^^^^^^^^^^^  ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Deserialize` and `Serialize`
[INFO] [stdout]   --> learn_game/src/lib.rs:11:13
[INFO] [stdout]    |
[INFO] [stdout] 11 | use serde::{Deserialize, Serialize};
[INFO] [stdout]    |             ^^^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Cell`
[INFO] [stdout]   --> learn_game/src/lib.rs:12:17
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::cell::{Cell, RefCell};
[INFO] [stdout]    |                 ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]   --> learn_game/src/lib.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::collections::HashMap;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]   --> learn_game/src/lib.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::fs::File;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::prelude::*`
[INFO] [stdout]   --> learn_game/src/lib.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use std::io::prelude::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::BufReader`
[INFO] [stdout]   --> learn_game/src/lib.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use std::io::BufReader;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter::Iterator`
[INFO] [stdout]   --> learn_game/src/lib.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use std::iter::Iterator;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::marker::PhantomData`
[INFO] [stdout]   --> learn_game/src/lib.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use std::marker::PhantomData;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `DerefMut` and `Deref`
[INFO] [stdout]   --> learn_game/src/lib.rs:19:16
[INFO] [stdout]    |
[INFO] [stdout] 19 | use std::ops::{Deref, DerefMut};
[INFO] [stdout]    |                ^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `PathBuf`
[INFO] [stdout]   --> learn_game/src/lib.rs:20:23
[INFO] [stdout]    |
[INFO] [stdout] 20 | use std::path::{Path, PathBuf};
[INFO] [stdout]    |                       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]   --> learn_game/src/lib.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | use std::thread;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `fmt` and `io`
[INFO] [stdout]   --> learn_game/src/lib.rs:22:11
[INFO] [stdout]    |
[INFO] [stdout] 22 | use std::{fmt, io, mem};
[INFO] [stdout]    |           ^^^  ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Cell`
[INFO] [stdout]  --> learn_game/src/config.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cell::{Cell, RefCell};
[INFO] [stdout]   |                 ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::DerefMut`
[INFO] [stdout]  --> learn_game/src/players.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::ops::DerefMut;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0063]: missing field `q_max` in initializer of `players::MinimaxPlayer`
[INFO] [stdout]    --> learn_game/src/lib.rs:406:37
[INFO] [stdout]     |
[INFO] [stdout] 406 |         let mut minimax1 = Box::new(MinimaxPlayer {
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^ missing `q_max`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0063]: missing field `q_max` in initializer of `players::MinimaxPlayer`
[INFO] [stdout]    --> learn_game/src/lib.rs:410:37
[INFO] [stdout]     |
[INFO] [stdout] 410 |         let mut minimax2 = Box::new(MinimaxPlayer {
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^ missing `q_max`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `board`
[INFO] [stdout]    --> learn_game/src/players.rs:129:29
[INFO] [stdout]     |
[INFO] [stdout] 129 |     fn choose_move_k(&self, board: &Board, q: &mut QTable) -> (usize, usize){
[INFO] [stdout]     |                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_board`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `q`
[INFO] [stdout]    --> learn_game/src/players.rs:129:44
[INFO] [stdout]     |
[INFO] [stdout] 129 |     fn choose_move_k(&self, board: &Board, q: &mut QTable) -> (usize, usize){
[INFO] [stdout]     |                                            ^ help: if this is intentional, prefix it with an underscore: `_q`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `q`
[INFO] [stdout]    --> learn_game/src/players.rs:287:42
[INFO] [stdout]     |
[INFO] [stdout] 287 |     fn choose_move(&self, board: &Board, q: &mut QTable) -> (usize, usize) {
[INFO] [stdout]     |                                          ^ help: if this is intentional, prefix it with an underscore: `_q`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `IsGameOver`
[INFO] [stdout]    --> learn_game/src/players.rs:352:13
[INFO] [stdout]     |
[INFO] [stdout] 352 |             IsGameOver => unreachable!(),
[INFO] [stdout]     |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_IsGameOver`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t_next`
[INFO] [stdout]    --> learn_game/src/q_table.rs:250:13
[INFO] [stdout]     |
[INFO] [stdout] 250 |         let t_next = q
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_t_next`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> learn_game/src/q_table.rs:268:13
[INFO] [stdout]     |
[INFO] [stdout] 268 |         let t = q
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `q_saved`
[INFO] [stdout]    --> learn_game/src/q_table.rs:272:13
[INFO] [stdout]     |
[INFO] [stdout] 272 |         let q_saved = q_table_to_disk(&path, &q);
[INFO] [stdout]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_q_saved`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `reward` is never read
[INFO] [stdout]    --> learn_game/src/lib.rs:120:38
[INFO] [stdout]     |
[INFO] [stdout] 120 |                     let mut reward = 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: value assigned to `reward` is never read
[INFO] [stdout]    --> learn_game/src/lib.rs:184:38
[INFO] [stdout]     |
[INFO] [stdout] 184 |                     let mut reward = 0.0;
[INFO] [stdout]     |                                      ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `is_q_saved`
[INFO] [stdout]    --> learn_game/src/lib.rs:226:13
[INFO] [stdout]     |
[INFO] [stdout] 226 |         let is_q_saved = q_table::q_table_to_disk(&path, q.as_deref().unwrap());
[INFO] [stdout]     |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_is_q_saved`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `is_q_saved`
[INFO] [stdout]    --> learn_game/src/lib.rs:249:13
[INFO] [stdout]     |
[INFO] [stdout] 249 |         let is_q_saved = q_table::q_table_to_disk(&path, q.as_deref().unwrap());
[INFO] [stdout]     |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_is_q_saved`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> learn_game/src/lib.rs:253:9
[INFO] [stdout]     |
[INFO] [stdout] 253 |     let mut rl_max = Box::new(ComputerPlayerRLmax {
[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]    --> learn_game/src/lib.rs:257:9
[INFO] [stdout]     |
[INFO] [stdout] 257 |     let mut rl_min = Box::new(ComputerPlayerRLmin {
[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]    --> learn_game/src/lib.rs:267:9
[INFO] [stdout]     |
[INFO] [stdout] 267 |     let mut rl_max = Box::new(ComputerPlayerRLmax {
[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]    --> learn_game/src/lib.rs:272:9
[INFO] [stdout]     |
[INFO] [stdout] 272 |     let mut q_max = RefCell::new(q_table::q_table_from_disk_pickle(&path)
[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]    --> learn_game/src/lib.rs:274:9
[INFO] [stdout]     |
[INFO] [stdout] 274 |     let mut rl_min = Box::new(MinimaxPlayer {
[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]    --> learn_game/src/lib.rs:365:9
[INFO] [stdout]     |
[INFO] [stdout] 365 |     let mut q_max = RefCell::new(q_table::q_table_from_disk_pickle(&path)
[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]    --> learn_game/src/lib.rs:426:13
[INFO] [stdout]     |
[INFO] [stdout] 426 |         let mut rl_max = Box::new(ComputerPlayerRLmax {
[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]    --> learn_game/src/lib.rs:430:13
[INFO] [stdout]     |
[INFO] [stdout] 430 |         let mut rl_min = Box::new(ComputerPlayerRLmin {
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0063`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `learn_game` (lib test) due to 2 previous errors; 38 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "c57c1d1272ae5b2a5494e2cf23983580c3c4e6aee47703aa36261be0488d90f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c57c1d1272ae5b2a5494e2cf23983580c3c4e6aee47703aa36261be0488d90f2", kill_on_drop: false }`
[INFO] [stdout] c57c1d1272ae5b2a5494e2cf23983580c3c4e6aee47703aa36261be0488d90f2
