[INFO] cloning repository https://github.com/dlinman/rgame
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dlinman/rgame" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdlinman%2Frgame", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdlinman%2Frgame'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d89d04a4848bf95b20b09b41bd39e2daacb70c5c
[INFO] testing dlinman/rgame against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdlinman%2Frgame" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/dlinman/rgame
[INFO] finished tweaking git repo https://github.com/dlinman/rgame
[INFO] tweaked toml for git repo https://github.com/dlinman/rgame written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/dlinman/rgame on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/dlinman/rgame 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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wasi v0.9.0+wasi-snapshot-preview1
[INFO] [stderr]   Downloaded rand v0.7.3
[INFO] [stderr]   Downloaded getrandom v0.1.14
[INFO] [stderr]   Downloaded cfg-if v0.1.10
[INFO] [stderr]   Downloaded rand_chacha v0.2.2
[INFO] [stderr]   Downloaded rand_hc v0.2.0
[INFO] [stderr]   Downloaded rand_core v0.5.1
[INFO] [stderr]   Downloaded libc v0.2.68
[INFO] [stderr]   Downloaded ppv-lite86 v0.2.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7121135ee3aa6917acf5e917798a20da2b87a11c8f21f1cd9973721ec8c77f7c
[INFO] running `Command { std: "docker" "start" "-a" "7121135ee3aa6917acf5e917798a20da2b87a11c8f21f1cd9973721ec8c77f7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7121135ee3aa6917acf5e917798a20da2b87a11c8f21f1cd9973721ec8c77f7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7121135ee3aa6917acf5e917798a20da2b87a11c8f21f1cd9973721ec8c77f7c", kill_on_drop: false }`
[INFO] [stdout] 7121135ee3aa6917acf5e917798a20da2b87a11c8f21f1cd9973721ec8c77f7c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8c6632db78e5c80924b922a15b8c8d0f5b0131e01c7bc1dad7dd3023867bbe9b
[INFO] running `Command { std: "docker" "start" "-a" "8c6632db78e5c80924b922a15b8c8d0f5b0131e01c7bc1dad7dd3023867bbe9b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.68
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling rgame v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `BufRead`
[INFO] [stdout]  --> src/single_game.rs:5:15
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::io::{BufRead};
[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 imports: `human_player`, `pick_highest_action_agent`, `self_minimax_agent`, and `strict_random_agent`
[INFO] [stdout]   --> src/main.rs:10:14
[INFO] [stdout]    |
[INFO] [stdout] 10 | use agents::{strict_random_agent, pick_highest_action_agent, self_minimax_agent, alpha_beta_agent, human_player};
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^                    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_agent` is never used
[INFO] [stdout]  --> src/agents/strict_random_agent.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn get_agent() -> impl Agent {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `StrictRandomAgent` is never constructed
[INFO] [stdout]   --> src/agents/strict_random_agent.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct StrictRandomAgent {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_agent` is never used
[INFO] [stdout]  --> src/agents/pick_highest_action_agent.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn get_agent( heuristic_description : HeuristicDescription, player : u32 ) -> impl Agent {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PickHighestActionAgent` is never constructed
[INFO] [stdout]  --> src/agents/pick_highest_action_agent.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct PickHighestActionAgent {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_agent` is never used
[INFO] [stdout]  --> src/agents/self_minimax_agent.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn get_agent( heuristic_description : HeuristicDescription, player : u32, depth : u32 ) -> impl Agent {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SelfMinimaxAgent` is never constructed
[INFO] [stdout]   --> src/agents/self_minimax_agent.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct SelfMinimaxAgent {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_agent` is never used
[INFO] [stdout]  --> src/agents/human_player.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn get_agent() -> impl Agent {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `HumanAgent` is never constructed
[INFO] [stdout]   --> src/agents/human_player.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct HumanAgent {}
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `contest` is never used
[INFO] [stdout]  --> src/two_player_contest.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn contest<G : Game, P1 : Agent, P2 : Agent>( game : &G, player_1 : &mut P1, player_2 : &mut P2, game_count : u32 ) {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `scores` is never read
[INFO] [stdout]  --> src/games/game_form.rs:4:27
[INFO] [stdout]   |
[INFO] [stdout] 4 |     Winner { player: u32, scores : Vec<(u32, i32)> },
[INFO] [stdout]   |     ------                ^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `scores` is never read
[INFO] [stdout]  --> src/games/game_form.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 |     Draw { scores : Vec<(u32, i32)> },
[INFO] [stdout]   |     ----   ^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Misc` is never constructed
[INFO] [stdout]   --> src/games/game_form.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout]  9 | pub enum HeuristicDescription {
[INFO] [stdout]    |          -------------------- variant in this enum
[INFO] [stdout] 10 |     Misc(String),
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `players_allowed` is never used
[INFO] [stdout]   --> src/games/game_form.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub trait Game {
[INFO] [stdout]    |           ---- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 31 |     fn players_allowed(&self) -> u32;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_game` is never used
[INFO] [stdout]  --> src/games/tic_tac_toe.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn get_game() -> impl Game {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TicTacToeGame` is never constructed
[INFO] [stdout]  --> src/games/tic_tac_toe.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct TicTacToeGame { }
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Square` is never used
[INFO] [stdout]   --> src/games/tic_tac_toe.rs:11:6
[INFO] [stdout]    |
[INFO] [stdout] 11 | enum Square {
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TicTacToeState` is never constructed
[INFO] [stdout]   --> src/games/tic_tac_toe.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | struct TicTacToeState {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TicTacToeTurn` is never constructed
[INFO] [stdout]   --> src/games/tic_tac_toe.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | struct TicTacToeTurn {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Turns` is never constructed
[INFO] [stdout]   --> src/games/tic_tac_toe.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | struct Turns {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TTTHeuristic` is never constructed
[INFO] [stdout]   --> src/games/tic_tac_toe.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | struct TTTHeuristic {}
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.18s
[INFO] running `Command { std: "docker" "inspect" "8c6632db78e5c80924b922a15b8c8d0f5b0131e01c7bc1dad7dd3023867bbe9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c6632db78e5c80924b922a15b8c8d0f5b0131e01c7bc1dad7dd3023867bbe9b", kill_on_drop: false }`
[INFO] [stdout] 8c6632db78e5c80924b922a15b8c8d0f5b0131e01c7bc1dad7dd3023867bbe9b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d9c5f558091436c4a230c199b64d7d0926bb9bc669a96e26a859f9a617c65bf2
[INFO] running `Command { std: "docker" "start" "-a" "d9c5f558091436c4a230c199b64d7d0926bb9bc669a96e26a859f9a617c65bf2", kill_on_drop: false }`
[INFO] [stderr]    Compiling rgame v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `BufRead`
[INFO] [stdout]  --> src/single_game.rs:5:15
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::io::{BufRead};
[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 imports: `human_player`, `pick_highest_action_agent`, `self_minimax_agent`, and `strict_random_agent`
[INFO] [stdout]   --> src/main.rs:10:14
[INFO] [stdout]    |
[INFO] [stdout] 10 | use agents::{strict_random_agent, pick_highest_action_agent, self_minimax_agent, alpha_beta_agent, human_player};
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^                    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_agent` is never used
[INFO] [stdout]  --> src/agents/strict_random_agent.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn get_agent() -> impl Agent {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `StrictRandomAgent` is never constructed
[INFO] [stdout]   --> src/agents/strict_random_agent.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct StrictRandomAgent {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_agent` is never used
[INFO] [stdout]  --> src/agents/pick_highest_action_agent.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn get_agent( heuristic_description : HeuristicDescription, player : u32 ) -> impl Agent {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PickHighestActionAgent` is never constructed
[INFO] [stdout]  --> src/agents/pick_highest_action_agent.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct PickHighestActionAgent {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_agent` is never used
[INFO] [stdout]  --> src/agents/self_minimax_agent.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn get_agent( heuristic_description : HeuristicDescription, player : u32, depth : u32 ) -> impl Agent {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SelfMinimaxAgent` is never constructed
[INFO] [stdout]   --> src/agents/self_minimax_agent.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct SelfMinimaxAgent {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_agent` is never used
[INFO] [stdout]  --> src/agents/human_player.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn get_agent() -> impl Agent {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `HumanAgent` is never constructed
[INFO] [stdout]   --> src/agents/human_player.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct HumanAgent {}
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `contest` is never used
[INFO] [stdout]  --> src/two_player_contest.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn contest<G : Game, P1 : Agent, P2 : Agent>( game : &G, player_1 : &mut P1, player_2 : &mut P2, game_count : u32 ) {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `scores` is never read
[INFO] [stdout]  --> src/games/game_form.rs:4:27
[INFO] [stdout]   |
[INFO] [stdout] 4 |     Winner { player: u32, scores : Vec<(u32, i32)> },
[INFO] [stdout]   |     ------                ^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `scores` is never read
[INFO] [stdout]  --> src/games/game_form.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 |     Draw { scores : Vec<(u32, i32)> },
[INFO] [stdout]   |     ----   ^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Misc` is never constructed
[INFO] [stdout]   --> src/games/game_form.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout]  9 | pub enum HeuristicDescription {
[INFO] [stdout]    |          -------------------- variant in this enum
[INFO] [stdout] 10 |     Misc(String),
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `players_allowed` is never used
[INFO] [stdout]   --> src/games/game_form.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub trait Game {
[INFO] [stdout]    |           ---- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 31 |     fn players_allowed(&self) -> u32;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_game` is never used
[INFO] [stdout]  --> src/games/tic_tac_toe.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn get_game() -> impl Game {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TicTacToeGame` is never constructed
[INFO] [stdout]  --> src/games/tic_tac_toe.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct TicTacToeGame { }
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Square` is never used
[INFO] [stdout]   --> src/games/tic_tac_toe.rs:11:6
[INFO] [stdout]    |
[INFO] [stdout] 11 | enum Square {
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TicTacToeState` is never constructed
[INFO] [stdout]   --> src/games/tic_tac_toe.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | struct TicTacToeState {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TicTacToeTurn` is never constructed
[INFO] [stdout]   --> src/games/tic_tac_toe.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | struct TicTacToeTurn {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Turns` is never constructed
[INFO] [stdout]   --> src/games/tic_tac_toe.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | struct Turns {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TTTHeuristic` is never constructed
[INFO] [stdout]   --> src/games/tic_tac_toe.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | struct TTTHeuristic {}
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "d9c5f558091436c4a230c199b64d7d0926bb9bc669a96e26a859f9a617c65bf2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9c5f558091436c4a230c199b64d7d0926bb9bc669a96e26a859f9a617c65bf2", kill_on_drop: false }`
[INFO] [stdout] d9c5f558091436c4a230c199b64d7d0926bb9bc669a96e26a859f9a617c65bf2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c79fc8e4c4bba62b8653ce5b93461d59243135427ff178ba6889958c7a9f8995
[INFO] running `Command { std: "docker" "start" "-a" "c79fc8e4c4bba62b8653ce5b93461d59243135427ff178ba6889958c7a9f8995", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `BufRead`
[INFO] [stderr]  --> src/single_game.rs:5:15
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::io::{BufRead};
[INFO] [stderr]   |               ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `human_player`, `pick_highest_action_agent`, `self_minimax_agent`, and `strict_random_agent`
[INFO] [stderr]   --> src/main.rs:10:14
[INFO] [stderr]    |
[INFO] [stderr] 10 | use agents::{strict_random_agent, pick_highest_action_agent, self_minimax_agent, alpha_beta_agent, human_player};
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^                    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `get_agent` is never used
[INFO] [stderr]  --> src/agents/strict_random_agent.rs:6:8
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn get_agent() -> impl Agent {
[INFO] [stderr]   |        ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `StrictRandomAgent` is never constructed
[INFO] [stderr]   --> src/agents/strict_random_agent.rs:10:8
[INFO] [stderr]    |
[INFO] [stderr] 10 | struct StrictRandomAgent {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `get_agent` is never used
[INFO] [stderr]  --> src/agents/pick_highest_action_agent.rs:5:8
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn get_agent( heuristic_description : HeuristicDescription, player : u32 ) -> impl Agent {
[INFO] [stderr]   |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `PickHighestActionAgent` is never constructed
[INFO] [stderr]  --> src/agents/pick_highest_action_agent.rs:9:8
[INFO] [stderr]   |
[INFO] [stderr] 9 | struct PickHighestActionAgent {
[INFO] [stderr]   |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `get_agent` is never used
[INFO] [stderr]  --> src/agents/self_minimax_agent.rs:7:8
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn get_agent( heuristic_description : HeuristicDescription, player : u32, depth : u32 ) -> impl Agent {
[INFO] [stderr]   |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `SelfMinimaxAgent` is never constructed
[INFO] [stderr]   --> src/agents/self_minimax_agent.rs:11:8
[INFO] [stderr]    |
[INFO] [stderr] 11 | struct SelfMinimaxAgent {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `get_agent` is never used
[INFO] [stderr]  --> src/agents/human_player.rs:7:8
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn get_agent() -> impl Agent {
[INFO] [stderr]   |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `HumanAgent` is never constructed
[INFO] [stderr]   --> src/agents/human_player.rs:11:8
[INFO] [stderr]    |
[INFO] [stderr] 11 | struct HumanAgent {}
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `contest` is never used
[INFO] [stderr]  --> src/two_player_contest.rs:6:8
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn contest<G : Game, P1 : Agent, P2 : Agent>( game : &G, player_1 : &mut P1, player_2 : &mut P2, game_count : u32 ) {
[INFO] [stderr]   |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `scores` is never read
[INFO] [stderr]  --> src/games/game_form.rs:4:27
[INFO] [stderr]   |
[INFO] [stderr] 4 |     Winner { player: u32, scores : Vec<(u32, i32)> },
[INFO] [stderr]   |     ------                ^^^^^^
[INFO] [stderr]   |     |
[INFO] [stderr]   |     field in this variant
[INFO] [stderr] 
[INFO] [stderr] warning: field `scores` is never read
[INFO] [stderr]  --> src/games/game_form.rs:5:12
[INFO] [stderr]   |
[INFO] [stderr] 5 |     Draw { scores : Vec<(u32, i32)> },
[INFO] [stderr]   |     ----   ^^^^^^
[INFO] [stderr]   |     |
[INFO] [stderr]   |     field in this variant
[INFO] [stderr] 
[INFO] [stderr] warning: variant `Misc` is never constructed
[INFO] [stderr]   --> src/games/game_form.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr]  9 | pub enum HeuristicDescription {
[INFO] [stderr]    |          -------------------- variant in this enum
[INFO] [stderr] 10 |     Misc(String),
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `players_allowed` is never used
[INFO] [stderr]   --> src/games/game_form.rs:31:8
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub trait Game {
[INFO] [stderr]    |           ---- method in this trait
[INFO] [stderr] ...
[INFO] [stderr] 31 |     fn players_allowed(&self) -> u32;
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `get_game` is never used
[INFO] [stderr]  --> src/games/tic_tac_toe.rs:4:8
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub fn get_game() -> impl Game {
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `TicTacToeGame` is never constructed
[INFO] [stderr]  --> src/games/tic_tac_toe.rs:8:8
[INFO] [stderr]   |
[INFO] [stderr] 8 | struct TicTacToeGame { }
[INFO] [stderr]   |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `Square` is never used
[INFO] [stderr]   --> src/games/tic_tac_toe.rs:11:6
[INFO] [stderr]    |
[INFO] [stderr] 11 | enum Square {
[INFO] [stderr]    |      ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `TicTacToeState` is never constructed
[INFO] [stderr]   --> src/games/tic_tac_toe.rs:18:8
[INFO] [stderr]    |
[INFO] [stderr] 18 | struct TicTacToeState {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `TicTacToeTurn` is never constructed
[INFO] [stderr]   --> src/games/tic_tac_toe.rs:23:8
[INFO] [stderr]    |
[INFO] [stderr] 23 | struct TicTacToeTurn {
[INFO] [stderr]    |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Turns` is never constructed
[INFO] [stderr]   --> src/games/tic_tac_toe.rs:30:8
[INFO] [stderr]    |
[INFO] [stderr] 30 | struct Turns {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `TTTHeuristic` is never constructed
[INFO] [stderr]   --> src/games/tic_tac_toe.rs:36:8
[INFO] [stderr]    |
[INFO] [stderr] 36 | struct TTTHeuristic {}
[INFO] [stderr]    |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rgame` (bin "rgame" test) generated 22 warnings (run `cargo fix --bin "rgame" -p rgame --tests` to apply 2 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rgame-442517f42e1eb4a1)
[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" "c79fc8e4c4bba62b8653ce5b93461d59243135427ff178ba6889958c7a9f8995", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c79fc8e4c4bba62b8653ce5b93461d59243135427ff178ba6889958c7a9f8995", kill_on_drop: false }`
[INFO] [stdout] c79fc8e4c4bba62b8653ce5b93461d59243135427ff178ba6889958c7a9f8995