[INFO] cloning repository https://github.com/cyzhang39/connect-four
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cyzhang39/connect-four" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcyzhang39%2Fconnect-four", kill_on_drop: false }`
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[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 956c594b884a5ced3273f3c62d4336adf8da6c02
[INFO] testing cyzhang39/connect-four against 1.85.0 for beta-1.86-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcyzhang39%2Fconnect-four" "/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/cyzhang39/connect-four on toolchain 1.85.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.85.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cyzhang39/connect-four
[INFO] finished tweaking git repo https://github.com/cyzhang39/connect-four
[INFO] tweaked toml for git repo https://github.com/cyzhang39/connect-four written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/cyzhang39/connect-four 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" "+1.85.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stdout] c2f377a26acac39d7f33b1fd7bb00a94e246a384a169f6a4fb7f2dc134917d41
[INFO] running `Command { std: "docker" "start" "-a" "c2f377a26acac39d7f33b1fd7bb00a94e246a384a169f6a4fb7f2dc134917d41", kill_on_drop: false }`
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[INFO] [stderr]    Compiling connect4-ai v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `coin_class` is never read
[INFO] [stdout]    --> src/frontend/ui.rs:109:17
[INFO] [stdout]     |
[INFO] [stdout] 109 |         let mut coin_class = "";
[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: variable does not need to be mutable
[INFO] [stdout]   --> src/scripts/ai.rs:32:13
[INFO] [stdout]    |
[INFO] [stdout] 32 |         let mut depth: i64 = 20;
[INFO] [stdout]    |             ----^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `HEIGHT` is never used
[INFO] [stdout]  --> src/scripts/array_board.rs:1:7
[INFO] [stdout]   |
[INFO] [stdout] 1 | const HEIGHT: usize = 6; 
[INFO] [stdout]   |       ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `WIDTH` is never used
[INFO] [stdout]  --> src/scripts/array_board.rs:2:7
[INFO] [stdout]   |
[INFO] [stdout] 2 | const WIDTH: usize = 7;
[INFO] [stdout]   |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Red`, `Yellow`, and `Empty` are never constructed
[INFO] [stdout]  --> src/scripts/array_board.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub enum Cell {
[INFO] [stdout]   |          ---- variants in this enum
[INFO] [stdout] 6 |     Red,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 7 |     Yellow,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 8 |     Empty
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Cell` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Win`, `Loss`, `Tie`, and `Default` are never constructed
[INFO] [stdout]   --> src/scripts/array_board.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub enum GameState {
[INFO] [stdout]    |          --------- variants in this enum
[INFO] [stdout] 13 |     Win,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 14 |     Loss,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 15 |     Tie,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 16 |     Default,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `GameState` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ArrayBoard` is never constructed
[INFO] [stdout]   --> src/scripts/array_board.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct ArrayBoard {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/scripts/array_board.rs:32:12
[INFO] [stdout]     |
[INFO] [stdout] 31  | impl ArrayBoard {
[INFO] [stdout]     | --------------- associated items in this implementation
[INFO] [stdout] 32  |     pub fn new() -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 43  |     pub fn play_turn(&mut self, column: usize) -> Result<GameState, String> {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 62  |     pub fn undo_move(&mut self, column: usize) -> Result<GameState, String> {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 75  |     pub fn play_move(&mut self, column: usize) { 
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 89  |     pub fn is_move_valid(&self, column: usize) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 93  |     pub fn is_draw(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 97  |     pub fn get_num_moves(&self) -> usize {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 101 |     pub fn is_winning_move(&self, column: usize) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `complete_board` is never read
[INFO] [stdout]   --> src/scripts/bit_board.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct BitBoard {
[INFO] [stdout]    |            -------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 17 |     pub complete_board: u64,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `full_col_mask` is never used
[INFO] [stdout]   --> src/scripts/bit_board.rs:52:12
[INFO] [stdout]    |
[INFO] [stdout] 25 | impl BitBoard {
[INFO] [stdout]    | ------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 52 |     pub fn full_col_mask(&self, col: usize) -> u64 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/scripts/bit_board.rs:128:9
[INFO] [stdout]     |
[INFO] [stdout] 128 |         self.undo_move(col);
[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] 128 |         let _ = self.undo_move(col);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 26.48s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: wasm-bindgen v0.2.86
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "c2f377a26acac39d7f33b1fd7bb00a94e246a384a169f6a4fb7f2dc134917d41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2f377a26acac39d7f33b1fd7bb00a94e246a384a169f6a4fb7f2dc134917d41", kill_on_drop: false }`
[INFO] [stdout] c2f377a26acac39d7f33b1fd7bb00a94e246a384a169f6a4fb7f2dc134917d41
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+1.85.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1811903e93ff8516551ee7e0d27300bfa9bdb6ed44b78ed021769a448e470405
[INFO] running `Command { std: "docker" "start" "-a" "1811903e93ff8516551ee7e0d27300bfa9bdb6ed44b78ed021769a448e470405", kill_on_drop: false }`
[INFO] [stderr]    Compiling connect4-ai v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `coin_class` is never read
[INFO] [stdout]    --> src/frontend/ui.rs:109:17
[INFO] [stdout]     |
[INFO] [stdout] 109 |         let mut coin_class = "";
[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: variable does not need to be mutable
[INFO] [stdout]   --> src/scripts/ai.rs:32:13
[INFO] [stdout]    |
[INFO] [stdout] 32 |         let mut depth: i64 = 20;
[INFO] [stdout]    |             ----^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `HEIGHT` is never used
[INFO] [stdout]  --> src/scripts/array_board.rs:1:7
[INFO] [stdout]   |
[INFO] [stdout] 1 | const HEIGHT: usize = 6; 
[INFO] [stdout]   |       ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `WIDTH` is never used
[INFO] [stdout]  --> src/scripts/array_board.rs:2:7
[INFO] [stdout]   |
[INFO] [stdout] 2 | const WIDTH: usize = 7;
[INFO] [stdout]   |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Red`, `Yellow`, and `Empty` are never constructed
[INFO] [stdout]  --> src/scripts/array_board.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub enum Cell {
[INFO] [stdout]   |          ---- variants in this enum
[INFO] [stdout] 6 |     Red,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 7 |     Yellow,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 8 |     Empty
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Cell` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Win`, `Loss`, `Tie`, and `Default` are never constructed
[INFO] [stdout]   --> src/scripts/array_board.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub enum GameState {
[INFO] [stdout]    |          --------- variants in this enum
[INFO] [stdout] 13 |     Win,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 14 |     Loss,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 15 |     Tie,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 16 |     Default,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `GameState` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ArrayBoard` is never constructed
[INFO] [stdout]   --> src/scripts/array_board.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct ArrayBoard {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/scripts/array_board.rs:32:12
[INFO] [stdout]     |
[INFO] [stdout] 31  | impl ArrayBoard {
[INFO] [stdout]     | --------------- associated items in this implementation
[INFO] [stdout] 32  |     pub fn new() -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 43  |     pub fn play_turn(&mut self, column: usize) -> Result<GameState, String> {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 62  |     pub fn undo_move(&mut self, column: usize) -> Result<GameState, String> {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 75  |     pub fn play_move(&mut self, column: usize) { 
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 89  |     pub fn is_move_valid(&self, column: usize) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 93  |     pub fn is_draw(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 97  |     pub fn get_num_moves(&self) -> usize {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 101 |     pub fn is_winning_move(&self, column: usize) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `complete_board` is never read
[INFO] [stdout]   --> src/scripts/bit_board.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct BitBoard {
[INFO] [stdout]    |            -------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 17 |     pub complete_board: u64,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `full_col_mask` is never used
[INFO] [stdout]   --> src/scripts/bit_board.rs:52:12
[INFO] [stdout]    |
[INFO] [stdout] 25 | impl BitBoard {
[INFO] [stdout]    | ------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 52 |     pub fn full_col_mask(&self, col: usize) -> u64 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/scripts/bit_board.rs:128:9
[INFO] [stdout]     |
[INFO] [stdout] 128 |         self.undo_move(col);
[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] 128 |         let _ = self.undo_move(col);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.69s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: wasm-bindgen v0.2.86
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "1811903e93ff8516551ee7e0d27300bfa9bdb6ed44b78ed021769a448e470405", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1811903e93ff8516551ee7e0d27300bfa9bdb6ed44b78ed021769a448e470405", kill_on_drop: false }`
[INFO] [stdout] 1811903e93ff8516551ee7e0d27300bfa9bdb6ed44b78ed021769a448e470405
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+1.85.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a46e82d58f6267136f3d8bc00a288228e6a104a194cae3052fbae9cde27ea4b2
[INFO] running `Command { std: "docker" "start" "-a" "a46e82d58f6267136f3d8bc00a288228e6a104a194cae3052fbae9cde27ea4b2", kill_on_drop: false }`
[INFO] [stderr] warning: value assigned to `coin_class` is never read
[INFO] [stderr]    --> src/frontend/ui.rs:109:17
[INFO] [stderr]     |
[INFO] [stderr] 109 |         let mut coin_class = "";
[INFO] [stderr]     |                 ^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/scripts/ai.rs:32:13
[INFO] [stderr]    |
[INFO] [stderr] 32 |         let mut depth: i64 = 20;
[INFO] [stderr]    |             ----^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant `HEIGHT` is never used
[INFO] [stderr]  --> src/scripts/array_board.rs:1:7
[INFO] [stderr]   |
[INFO] [stderr] 1 | const HEIGHT: usize = 6; 
[INFO] [stderr]   |       ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant `WIDTH` is never used
[INFO] [stderr]  --> src/scripts/array_board.rs:2:7
[INFO] [stderr]   |
[INFO] [stderr] 2 | const WIDTH: usize = 7;
[INFO] [stderr]   |       ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variants `Red`, `Yellow`, and `Empty` are never constructed
[INFO] [stderr]  --> src/scripts/array_board.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub enum Cell {
[INFO] [stderr]   |          ---- variants in this enum
[INFO] [stderr] 6 |     Red,
[INFO] [stderr]   |     ^^^
[INFO] [stderr] 7 |     Yellow,
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr] 8 |     Empty
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `Cell` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: variants `Win`, `Loss`, `Tie`, and `Default` are never constructed
[INFO] [stderr]   --> src/scripts/array_board.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | pub enum GameState {
[INFO] [stderr]    |          --------- variants in this enum
[INFO] [stderr] 13 |     Win,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 14 |     Loss,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 15 |     Tie,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 16 |     Default,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `GameState` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: struct `ArrayBoard` is never constructed
[INFO] [stderr]   --> src/scripts/array_board.rs:21:12
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub struct ArrayBoard {
[INFO] [stderr]    |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: multiple associated items are never used
[INFO] [stderr]    --> src/scripts/array_board.rs:32:12
[INFO] [stderr]     |
[INFO] [stderr] 31  | impl ArrayBoard {
[INFO] [stderr]     | --------------- associated items in this implementation
[INFO] [stderr] 32  |     pub fn new() -> Self {
[INFO] [stderr]     |            ^^^
[INFO] [stderr] ...
[INFO] [stderr] 43  |     pub fn play_turn(&mut self, column: usize) -> Result<GameState, String> {
[INFO] [stderr]     |            ^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 62  |     pub fn undo_move(&mut self, column: usize) -> Result<GameState, String> {
[INFO] [stderr]     |            ^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 75  |     pub fn play_move(&mut self, column: usize) { 
[INFO] [stderr]     |            ^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 89  |     pub fn is_move_valid(&self, column: usize) -> bool {
[INFO] [stderr]     |            ^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 93  |     pub fn is_draw(&self) -> bool {
[INFO] [stderr]     |            ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 97  |     pub fn get_num_moves(&self) -> usize {
[INFO] [stderr]     |            ^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 101 |     pub fn is_winning_move(&self, column: usize) -> bool {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `complete_board` is never read
[INFO] [stderr]   --> src/scripts/bit_board.rs:17:9
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub struct BitBoard {
[INFO] [stderr]    |            -------- field in this struct
[INFO] [stderr] ...
[INFO] [stderr] 17 |     pub complete_board: u64,
[INFO] [stderr]    |         ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `full_col_mask` is never used
[INFO] [stderr]   --> src/scripts/bit_board.rs:52:12
[INFO] [stderr]    |
[INFO] [stderr] 25 | impl BitBoard {
[INFO] [stderr]    | ------------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 52 |     pub fn full_col_mask(&self, col: usize) -> u64 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/scripts/bit_board.rs:128:9
[INFO] [stderr]     |
[INFO] [stderr] 128 |         self.undo_move(col);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 128 |         let _ = self.undo_move(col);
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `connect4-ai` (bin "connect4-ai" test) generated 11 warnings (run `cargo fix --bin "connect4-ai" --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.12s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: wasm-bindgen v0.2.86
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/connect4_ai-3c27aad73e79faf3)
[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" "a46e82d58f6267136f3d8bc00a288228e6a104a194cae3052fbae9cde27ea4b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a46e82d58f6267136f3d8bc00a288228e6a104a194cae3052fbae9cde27ea4b2", kill_on_drop: false }`
[INFO] [stdout] a46e82d58f6267136f3d8bc00a288228e6a104a194cae3052fbae9cde27ea4b2
