[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] checking madoromizm/rust_reversi against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmadoromizm%2Frust_reversi" "/workspace/builds/worker-19/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-19/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/madoromizm/rust_reversi on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "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-19/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: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bd02791634faa81c64bdd91ffebbcf7b9ea2f6b79c3ca42745b53d3d3a026f1d
[INFO] running `Command { std: "docker" "start" "-a" "bd02791634faa81c64bdd91ffebbcf7b9ea2f6b79c3ca42745b53d3d3a026f1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bd02791634faa81c64bdd91ffebbcf7b9ea2f6b79c3ca42745b53d3d3a026f1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd02791634faa81c64bdd91ffebbcf7b9ea2f6b79c3ca42745b53d3d3a026f1d", kill_on_drop: false }`
[INFO] [stdout] bd02791634faa81c64bdd91ffebbcf7b9ea2f6b79c3ca42745b53d3d3a026f1d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 400bdc5fb37dfe1691f5506e8ba781db5769b3b6652b0764e2643434d5158440
[INFO] running `Command { std: "docker" "start" "-a" "400bdc5fb37dfe1691f5506e8ba781db5769b3b6652b0764e2643434d5158440", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking regex-syntax v0.6.18
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking aho-corasick v0.7.13
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking rust_reversi v0.1.0 (/tmp/fixit)
[INFO] [stderr]    Migrating src/main.rs from 2018 edition to 2021
[INFO] [stderr]        Fixed src/service/reversi_service.rs (5 fixes)
[INFO] [stderr]        Fixed src/view/game_view.rs (2 fixes)
[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]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[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: function is never used: `show_history`
[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: associated function is never used: `count_white_stones`
[INFO] [stdout]   --> src/domain_model/board.rs:97:12
[INFO] [stdout]    |
[INFO] [stdout] 97 |     pub fn count_white_stones(&self) -> i8 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `redo`
[INFO] [stdout]   --> src/domain_model/reversi_state.rs:73:12
[INFO] [stdout]    |
[INFO] [stdout] 73 |     pub fn redo(&mut self) -> Result<(), ReversiError> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `pass`
[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 is never used: `get_history_size`
[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 is never used: `undo`
[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 is never used: `redo`
[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: 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]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[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 `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: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `show_history`
[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: associated function is never used: `count_white_stones`
[INFO] [stdout]   --> src/domain_model/board.rs:97:12
[INFO] [stdout]    |
[INFO] [stdout] 97 |     pub fn count_white_stones(&self) -> i8 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `redo`
[INFO] [stdout]   --> src/domain_model/reversi_state.rs:73:12
[INFO] [stdout]    |
[INFO] [stdout] 73 |     pub fn redo(&mut self) -> Result<(), ReversiError> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `pass`
[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 is never used: `get_history_size`
[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 is never used: `undo`
[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 is never used: `redo`
[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: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.59s
[INFO] [stderr] Running `cargo check` to verify 2021
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking rust_reversi v0.1.0 (/tmp/fixit)
[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]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[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: function is never used: `show_history`
[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: associated function is never used: `count_white_stones`
[INFO] [stdout]   --> src/domain_model/board.rs:97:12
[INFO] [stdout]    |
[INFO] [stdout] 97 |     pub fn count_white_stones(&self) -> i8 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `redo`
[INFO] [stdout]   --> src/domain_model/reversi_state.rs:73:12
[INFO] [stdout]    |
[INFO] [stdout] 73 |     pub fn redo(&mut self) -> Result<(), ReversiError> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `pass`
[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 is never used: `get_history_size`
[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 is never used: `undo`
[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 is never used: `redo`
[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: 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]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[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: 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 `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: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `show_history`
[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: associated function is never used: `count_white_stones`
[INFO] [stdout]   --> src/domain_model/board.rs:97:12
[INFO] [stdout]    |
[INFO] [stdout] 97 |     pub fn count_white_stones(&self) -> i8 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `redo`
[INFO] [stdout]   --> src/domain_model/reversi_state.rs:73:12
[INFO] [stdout]    |
[INFO] [stdout] 73 |     pub fn redo(&mut self) -> Result<(), ReversiError> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `pass`
[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 is never used: `get_history_size`
[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 is never used: `undo`
[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 is never used: `redo`
[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: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.76s
[INFO] running `Command { std: "docker" "inspect" "400bdc5fb37dfe1691f5506e8ba781db5769b3b6652b0764e2643434d5158440", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "400bdc5fb37dfe1691f5506e8ba781db5769b3b6652b0764e2643434d5158440", kill_on_drop: false }`
[INFO] [stdout] 400bdc5fb37dfe1691f5506e8ba781db5769b3b6652b0764e2643434d5158440