[INFO] cloning repository https://github.com/jonahshader/ap_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/jonahshader/ap_tic_tac_toe_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjonahshader%2Fap_tic_tac_toe_rust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjonahshader%2Fap_tic_tac_toe_rust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] dc227439a199e7c6d90451c972641dd0c6b79315 [INFO] testing jonahshader/ap_tic_tac_toe_rust against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjonahshader%2Fap_tic_tac_toe_rust" "/workspace/builds/worker-7/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/jonahshader/ap_tic_tac_toe_rust on toolchain 722e1797249a965b6335aebd65d777f917e498f1 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/jonahshader/ap_tic_tac_toe_rust [INFO] finished tweaking git repo https://github.com/jonahshader/ap_tic_tac_toe_rust [INFO] tweaked toml for git repo https://github.com/jonahshader/ap_tic_tac_toe_rust written to /workspace/builds/worker-7/source/Cargo.toml [INFO] crate git repo https://github.com/jonahshader/ap_tic_tac_toe_rust already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 142736dfdca2848935c8b444484a1a45d5ee65432669027c1f7b8b5dcbc69d57 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "142736dfdca2848935c8b444484a1a45d5ee65432669027c1f7b8b5dcbc69d57", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "142736dfdca2848935c8b444484a1a45d5ee65432669027c1f7b8b5dcbc69d57", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "142736dfdca2848935c8b444484a1a45d5ee65432669027c1f7b8b5dcbc69d57", kill_on_drop: false }` [INFO] [stdout] 142736dfdca2848935c8b444484a1a45d5ee65432669027c1f7b8b5dcbc69d57 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 9da133068c5fa7b28b6139213fb5e24f52de0bb71d7610dea02253a1710fa9b1 [INFO] running `Command { std: "docker" "start" "-a" "9da133068c5fa7b28b6139213fb5e24f52de0bb71d7610dea02253a1710fa9b1", kill_on_drop: false }` [INFO] [stderr] Compiling ap_tic_tac_toe_rust v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `game::game_match::board` [INFO] [stdout] --> src/game/mod.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use game::game_match::board; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::io` [INFO] [stdout] --> src/main.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::io; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/game/game_match/board.rs:240:13 [INFO] [stdout] | [INFO] [stdout] 240 | for i in 0..3 { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `j` [INFO] [stdout] --> src/game/game_match/board.rs:242:17 [INFO] [stdout] | [INFO] [stdout] 242 | for j in 0..3 { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_j` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `print_board` [INFO] [stdout] --> src/game/game_match/board.rs:67:12 [INFO] [stdout] | [INFO] [stdout] 67 | pub fn print_board(&self) { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `winner` [INFO] [stdout] --> src/game/game_match/board.rs:177:5 [INFO] [stdout] | [INFO] [stdout] 177 | winner: i8, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `force_move` [INFO] [stdout] --> src/game/game_match/board.rs:249:8 [INFO] [stdout] | [INFO] [stdout] 249 | fn force_move(&mut self, meta_pos: (usize, usize), pos: (usize, usize), tile_value: i8) { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/game/mod.rs:26:9 [INFO] [stdout] | [INFO] [stdout] 26 | io::stdin().read_line(&mut pos_meta_x); [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: unused `Result` that must be used [INFO] [stdout] --> src/game/mod.rs:32:9 [INFO] [stdout] | [INFO] [stdout] 32 | io::stdin().read_line(&mut pos_meta_y); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/game/mod.rs:38:9 [INFO] [stdout] | [INFO] [stdout] 38 | io::stdin().read_line(&mut pos_x); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/game/mod.rs:44:9 [INFO] [stdout] | [INFO] [stdout] 44 | io::stdin().read_line(&mut pos_y); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/game/mod.rs:56:13 [INFO] [stdout] | [INFO] [stdout] 56 | io::stdin().read_line(&mut pos_x); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/game/mod.rs:62:13 [INFO] [stdout] | [INFO] [stdout] 62 | io::stdin().read_line(&mut pos_y); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 13 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1.26s [INFO] running `Command { std: "docker" "inspect" "9da133068c5fa7b28b6139213fb5e24f52de0bb71d7610dea02253a1710fa9b1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9da133068c5fa7b28b6139213fb5e24f52de0bb71d7610dea02253a1710fa9b1", kill_on_drop: false }` [INFO] [stdout] 9da133068c5fa7b28b6139213fb5e24f52de0bb71d7610dea02253a1710fa9b1 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 0bb3773b8dada8af81d6751f06c9281d00b4858c00c20bc7c673600da3994409 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "0bb3773b8dada8af81d6751f06c9281d00b4858c00c20bc7c673600da3994409", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling ap_tic_tac_toe_rust v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `game::game_match::board` [INFO] [stdout] --> src/game/mod.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use game::game_match::board; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::io` [INFO] [stdout] --> src/main.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::io; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/game/game_match/board.rs:240:13 [INFO] [stdout] | [INFO] [stdout] 240 | for i in 0..3 { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `j` [INFO] [stdout] --> src/game/game_match/board.rs:242:17 [INFO] [stdout] | [INFO] [stdout] 242 | for j in 0..3 { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_j` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `print_board` [INFO] [stdout] --> src/game/game_match/board.rs:67:12 [INFO] [stdout] | [INFO] [stdout] 67 | pub fn print_board(&self) { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `winner` [INFO] [stdout] --> src/game/game_match/board.rs:177:5 [INFO] [stdout] | [INFO] [stdout] 177 | winner: i8, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `force_move` [INFO] [stdout] --> src/game/game_match/board.rs:249:8 [INFO] [stdout] | [INFO] [stdout] 249 | fn force_move(&mut self, meta_pos: (usize, usize), pos: (usize, usize), tile_value: i8) { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/game/mod.rs:26:9 [INFO] [stdout] | [INFO] [stdout] 26 | io::stdin().read_line(&mut pos_meta_x); [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: unused `Result` that must be used [INFO] [stdout] --> src/game/mod.rs:32:9 [INFO] [stdout] | [INFO] [stdout] 32 | io::stdin().read_line(&mut pos_meta_y); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/game/mod.rs:38:9 [INFO] [stdout] | [INFO] [stdout] 38 | io::stdin().read_line(&mut pos_x); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/game/mod.rs:44:9 [INFO] [stdout] | [INFO] [stdout] 44 | io::stdin().read_line(&mut pos_y); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/game/mod.rs:56:13 [INFO] [stdout] | [INFO] [stdout] 56 | io::stdin().read_line(&mut pos_x); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/game/mod.rs:62:13 [INFO] [stdout] | [INFO] [stdout] 62 | io::stdin().read_line(&mut pos_y); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.90s [INFO] [stdout] warning: 13 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "0bb3773b8dada8af81d6751f06c9281d00b4858c00c20bc7c673600da3994409", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0bb3773b8dada8af81d6751f06c9281d00b4858c00c20bc7c673600da3994409", kill_on_drop: false }` [INFO] [stdout] 0bb3773b8dada8af81d6751f06c9281d00b4858c00c20bc7c673600da3994409 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 2e2b4e43a0f4fd1f388a9dd983649cef9d65a994fe3b2fddee97f662790781fb [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "2e2b4e43a0f4fd1f388a9dd983649cef9d65a994fe3b2fddee97f662790781fb", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] warning: unused import: `game::game_match::board` [INFO] [stderr] --> src/game/mod.rs:3:5 [INFO] [stderr] | [INFO] [stderr] 3 | use game::game_match::board; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::io` [INFO] [stderr] --> src/main.rs:3:5 [INFO] [stderr] | [INFO] [stderr] 3 | use std::io; [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `i` [INFO] [stderr] --> src/game/game_match/board.rs:240:13 [INFO] [stderr] | [INFO] [stderr] 240 | for i in 0..3 { [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `j` [INFO] [stderr] --> src/game/game_match/board.rs:242:17 [INFO] [stderr] | [INFO] [stderr] 242 | for j in 0..3 { [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_j` [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `print_board` [INFO] [stderr] --> src/game/game_match/board.rs:67:12 [INFO] [stderr] | [INFO] [stderr] 67 | pub fn print_board(&self) { [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: field is never read: `winner` [INFO] [stderr] --> src/game/game_match/board.rs:177:5 [INFO] [stderr] | [INFO] [stderr] 177 | winner: i8, [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `force_move` [INFO] [stderr] --> src/game/game_match/board.rs:249:8 [INFO] [stderr] | [INFO] [stderr] 249 | fn force_move(&mut self, meta_pos: (usize, usize), pos: (usize, usize), tile_value: i8) { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused `Result` that must be used [INFO] [stderr] --> src/game/mod.rs:26:9 [INFO] [stderr] | [INFO] [stderr] 26 | io::stdin().read_line(&mut pos_meta_x); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `Result` that must be used [INFO] [stderr] --> src/game/mod.rs:32:9 [INFO] [stderr] | [INFO] [stderr] 32 | io::stdin().read_line(&mut pos_meta_y); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `Result` that must be used [INFO] [stderr] --> src/game/mod.rs:38:9 [INFO] [stderr] | [INFO] [stderr] 38 | io::stdin().read_line(&mut pos_x); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `Result` that must be used [INFO] [stderr] --> src/game/mod.rs:44:9 [INFO] [stderr] | [INFO] [stderr] 44 | io::stdin().read_line(&mut pos_y); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `Result` that must be used [INFO] [stderr] --> src/game/mod.rs:56:13 [INFO] [stderr] | [INFO] [stderr] 56 | io::stdin().read_line(&mut pos_x); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `Result` that must be used [INFO] [stderr] --> src/game/mod.rs:62:13 [INFO] [stderr] | [INFO] [stderr] 62 | io::stdin().read_line(&mut pos_y); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: `ap_tic_tac_toe_rust` (bin "ap_tic_tac_toe_rust" test) generated 13 warnings [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 1.02s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/ap_tic_tac_toe_rust-80bbeb8eab7d9227) [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "2e2b4e43a0f4fd1f388a9dd983649cef9d65a994fe3b2fddee97f662790781fb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2e2b4e43a0f4fd1f388a9dd983649cef9d65a994fe3b2fddee97f662790781fb", kill_on_drop: false }` [INFO] [stdout] 2e2b4e43a0f4fd1f388a9dd983649cef9d65a994fe3b2fddee97f662790781fb