[INFO] cloning repository https://github.com/madoromizm/rust_reversi
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/madoromizm/rust_reversi" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmadoromizm%2Frust_reversi", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmadoromizm%2Frust_reversi'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dc64ba397d558a89a67e891c78df6e2be612b8e4
[INFO] building madoromizm/rust_reversi against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmadoromizm%2Frust_reversi" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/madoromizm/rust_reversi on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/madoromizm/rust_reversi
[INFO] finished tweaking git repo https://github.com/madoromizm/rust_reversi
[INFO] tweaked toml for git repo https://github.com/madoromizm/rust_reversi written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/madoromizm/rust_reversi 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cab4c267de2b618a8709415bf987aff01612e9992b922c383ad3adbd53f1a110
[INFO] running `Command { std: "docker" "start" "-a" "cab4c267de2b618a8709415bf987aff01612e9992b922c383ad3adbd53f1a110", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cab4c267de2b618a8709415bf987aff01612e9992b922c383ad3adbd53f1a110", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cab4c267de2b618a8709415bf987aff01612e9992b922c383ad3adbd53f1a110", kill_on_drop: false }`
[INFO] [stdout] cab4c267de2b618a8709415bf987aff01612e9992b922c383ad3adbd53f1a110
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 109b0e431f3eee6bf624b34a85e7070155f3874939e50fce400680c67f1b0e93
[INFO] running `Command { std: "docker" "start" "-a" "109b0e431f3eee6bf624b34a85e7070155f3874939e50fce400680c67f1b0e93", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling regex-syntax v0.6.18
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling aho-corasick v0.7.13
[INFO] [stderr]    Compiling regex v1.3.9
[INFO] [stderr]    Compiling rust_reversi v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::error::ReversiError`
[INFO] [stdout]  --> src/view/game_view.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use crate::error::ReversiError;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]  --> src/service/reversi_service.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fs::File;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BufRead`, `BufReader`, `BufWriter`, `Read`, `Write`, and `self`
[INFO] [stdout]  --> src/service/reversi_service.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{self, Read, Write, BufRead, BufReader, BufWriter};
[INFO] [stdout]   |               ^^^^  ^^^^  ^^^^^  ^^^^^^^  ^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `regex::Regex`
[INFO] [stdout]  --> src/service/reversi_service.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use regex::Regex;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::domain_model::cell_pos::CellPos`
[INFO] [stdout]  --> src/service/reversi_service.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use crate::domain_model::cell_pos::CellPos;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::domain_model::board::Board`
[INFO] [stdout]   --> src/service/reversi_service.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use crate::domain_model::board::Board;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `row` is never read
[INFO] [stdout]   --> src/view/game_view.rs:26:17
[INFO] [stdout]    |
[INFO] [stdout] 26 |         let mut row = 0usize;
[INFO] [stdout]    |                 ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `col` is never read
[INFO] [stdout]   --> src/view/game_view.rs:27:17
[INFO] [stdout]    |
[INFO] [stdout] 27 |         let mut col = 0usize;
[INFO] [stdout]    |                 ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `state`
[INFO] [stdout]    --> src/view/game_view.rs:127:21
[INFO] [stdout]     |
[INFO] [stdout] 127 | pub fn show_history(state: &ReversiState) {
[INFO] [stdout]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_state`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `show_history` is never used
[INFO] [stdout]    --> src/view/game_view.rs:127:8
[INFO] [stdout]     |
[INFO] [stdout] 127 | pub fn show_history(state: &ReversiState) {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `count_white_stones` is never used
[INFO] [stdout]   --> src/domain_model/board.rs:97:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl Board {
[INFO] [stdout]    | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 97 |     pub fn count_white_stones(&self) -> i8 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `redo` is never used
[INFO] [stdout]   --> src/domain_model/reversi_state.rs:73:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl ReversiState {
[INFO] [stdout]    | ----------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 73 |     pub fn redo(&mut self) -> Result<(), ReversiError> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `draw` is never used
[INFO] [stdout]   --> src/domain_model/cell.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub trait ICellState {
[INFO] [stdout]    |           ---------- method in this trait
[INFO] [stdout] 26 |     fn draw(&self);
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `pass` is never used
[INFO] [stdout]   --> src/service/reversi_service.rs:76:8
[INFO] [stdout]    |
[INFO] [stdout] 76 | pub fn pass(state: &mut ReversiState) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_history_size` is never used
[INFO] [stdout]   --> src/service/reversi_service.rs:80:8
[INFO] [stdout]    |
[INFO] [stdout] 80 | pub fn get_history_size(state: &ReversiState) -> usize {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `undo` is never used
[INFO] [stdout]   --> src/service/reversi_service.rs:86:8
[INFO] [stdout]    |
[INFO] [stdout] 86 | pub fn undo(state: &mut ReversiState) -> Result<(), ReversiError> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `redo` is never used
[INFO] [stdout]   --> src/service/reversi_service.rs:90:8
[INFO] [stdout]    |
[INFO] [stdout] 90 | pub fn redo(state: &mut ReversiState) -> Result<(), ReversiError> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]   --> src/domain_model/board.rs:52:11
[INFO] [stdout]    |
[INFO] [stdout] 52 |         !(row < 0 || 9 < row || col < 0 || 9 < col)
[INFO] [stdout]    |           ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]   --> src/domain_model/board.rs:52:33
[INFO] [stdout]    |
[INFO] [stdout] 52 |         !(row < 0 || 9 < row || col < 0 || 9 < col)
[INFO] [stdout]    |                                 ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/service/reversi_service.rs:43:5
[INFO] [stdout]    |
[INFO] [stdout] 43 |     state.board.set_cell(row, col, stone);
[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)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let _ = state.board.set_cell(row, col, stone);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.52s
[INFO] running `Command { std: "docker" "inspect" "109b0e431f3eee6bf624b34a85e7070155f3874939e50fce400680c67f1b0e93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "109b0e431f3eee6bf624b34a85e7070155f3874939e50fce400680c67f1b0e93", kill_on_drop: false }`
[INFO] [stdout] 109b0e431f3eee6bf624b34a85e7070155f3874939e50fce400680c67f1b0e93
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9f3d0e2eee5f56565a1a8dc85ba500abdb3f736ae655e9f1f900c210d085db6b
[INFO] running `Command { std: "docker" "start" "-a" "9f3d0e2eee5f56565a1a8dc85ba500abdb3f736ae655e9f1f900c210d085db6b", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_reversi v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::error::ReversiError`
[INFO] [stdout]  --> src/view/game_view.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use crate::error::ReversiError;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]  --> src/service/reversi_service.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fs::File;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BufRead`, `BufReader`, `BufWriter`, `Read`, `Write`, and `self`
[INFO] [stdout]  --> src/service/reversi_service.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{self, Read, Write, BufRead, BufReader, BufWriter};
[INFO] [stdout]   |               ^^^^  ^^^^  ^^^^^  ^^^^^^^  ^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `regex::Regex`
[INFO] [stdout]  --> src/service/reversi_service.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use regex::Regex;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::domain_model::cell_pos::CellPos`
[INFO] [stdout]  --> src/service/reversi_service.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use crate::domain_model::cell_pos::CellPos;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::domain_model::board::Board`
[INFO] [stdout]   --> src/service/reversi_service.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use crate::domain_model::board::Board;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `row` is never read
[INFO] [stdout]   --> src/view/game_view.rs:26:17
[INFO] [stdout]    |
[INFO] [stdout] 26 |         let mut row = 0usize;
[INFO] [stdout]    |                 ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `col` is never read
[INFO] [stdout]   --> src/view/game_view.rs:27:17
[INFO] [stdout]    |
[INFO] [stdout] 27 |         let mut col = 0usize;
[INFO] [stdout]    |                 ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `state`
[INFO] [stdout]    --> src/view/game_view.rs:127:21
[INFO] [stdout]     |
[INFO] [stdout] 127 | pub fn show_history(state: &ReversiState) {
[INFO] [stdout]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_state`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `show_history` is never used
[INFO] [stdout]    --> src/view/game_view.rs:127:8
[INFO] [stdout]     |
[INFO] [stdout] 127 | pub fn show_history(state: &ReversiState) {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `count_white_stones` is never used
[INFO] [stdout]   --> src/domain_model/board.rs:97:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl Board {
[INFO] [stdout]    | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 97 |     pub fn count_white_stones(&self) -> i8 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `redo` is never used
[INFO] [stdout]   --> src/domain_model/reversi_state.rs:73:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl ReversiState {
[INFO] [stdout]    | ----------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 73 |     pub fn redo(&mut self) -> Result<(), ReversiError> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `draw` is never used
[INFO] [stdout]   --> src/domain_model/cell.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub trait ICellState {
[INFO] [stdout]    |           ---------- method in this trait
[INFO] [stdout] 26 |     fn draw(&self);
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `pass` is never used
[INFO] [stdout]   --> src/service/reversi_service.rs:76:8
[INFO] [stdout]    |
[INFO] [stdout] 76 | pub fn pass(state: &mut ReversiState) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_history_size` is never used
[INFO] [stdout]   --> src/service/reversi_service.rs:80:8
[INFO] [stdout]    |
[INFO] [stdout] 80 | pub fn get_history_size(state: &ReversiState) -> usize {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `undo` is never used
[INFO] [stdout]   --> src/service/reversi_service.rs:86:8
[INFO] [stdout]    |
[INFO] [stdout] 86 | pub fn undo(state: &mut ReversiState) -> Result<(), ReversiError> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `redo` is never used
[INFO] [stdout]   --> src/service/reversi_service.rs:90:8
[INFO] [stdout]    |
[INFO] [stdout] 90 | pub fn redo(state: &mut ReversiState) -> Result<(), ReversiError> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]   --> src/domain_model/board.rs:52:11
[INFO] [stdout]    |
[INFO] [stdout] 52 |         !(row < 0 || 9 < row || col < 0 || 9 < col)
[INFO] [stdout]    |           ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]   --> src/domain_model/board.rs:52:33
[INFO] [stdout]    |
[INFO] [stdout] 52 |         !(row < 0 || 9 < row || col < 0 || 9 < col)
[INFO] [stdout]    |                                 ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/service/reversi_service.rs:43:5
[INFO] [stdout]    |
[INFO] [stdout] 43 |     state.board.set_cell(row, col, stone);
[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)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let _ = state.board.set_cell(row, col, stone);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.31s
[INFO] running `Command { std: "docker" "inspect" "9f3d0e2eee5f56565a1a8dc85ba500abdb3f736ae655e9f1f900c210d085db6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f3d0e2eee5f56565a1a8dc85ba500abdb3f736ae655e9f1f900c210d085db6b", kill_on_drop: false }`
[INFO] [stdout] 9f3d0e2eee5f56565a1a8dc85ba500abdb3f736ae655e9f1f900c210d085db6b