[INFO] updating cached repository starrtnow/mcts-connect-four [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/starrtnow/mcts-connect-four [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/starrtnow/mcts-connect-four" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/starrtnow/mcts-connect-four"` [INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/starrtnow/mcts-connect-four'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/starrtnow/mcts-connect-four" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/starrtnow/mcts-connect-four"` [INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/starrtnow/mcts-connect-four'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 463ec5ceebff5936c0b2e77abf138dab9a80ab20 [INFO] sha for GitHub repo starrtnow/mcts-connect-four: 463ec5ceebff5936c0b2e77abf138dab9a80ab20 [INFO] validating manifest of starrtnow/mcts-connect-four on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of starrtnow/mcts-connect-four on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing starrtnow/mcts-connect-four [INFO] finished frobbing starrtnow/mcts-connect-four [INFO] frobbed toml for starrtnow/mcts-connect-four written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/starrtnow/mcts-connect-four/Cargo.toml [INFO] started frobbing starrtnow/mcts-connect-four [INFO] finished frobbing starrtnow/mcts-connect-four [INFO] frobbed toml for starrtnow/mcts-connect-four written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/starrtnow/mcts-connect-four/Cargo.toml [INFO] crate starrtnow/mcts-connect-four already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] checking starrtnow/mcts-connect-four against try#266783e4e09e4e9d5307c1c8e695659c58bbcac7 for pr-63376 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-2/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/starrtnow/mcts-connect-four:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] 16c7857735ba6e641bc5fdcaea53d086f14cbb45f1c40a790ad147c55c3cfaca [INFO] running `"docker" "start" "-a" "16c7857735ba6e641bc5fdcaea53d086f14cbb45f1c40a790ad147c55c3cfaca"` [INFO] [stderr] Checking rand v0.3.14 [INFO] [stderr] Checking time v0.1.35 [INFO] [stderr] Checking connect_three v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unnecessary parentheses around `if` condition [INFO] [stderr] --> src/game_state.rs:53:12 [INFO] [stderr] | [INFO] [stderr] 53 | if (column[i] == Color::Empty){ [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_parens)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `super::*` [INFO] [stderr] --> src/game_state.rs:190:9 [INFO] [stderr] | [INFO] [stderr] 190 | use super::*; [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around `if` condition [INFO] [stderr] --> src/monte_carlo.rs:243:19 [INFO] [stderr] | [INFO] [stderr] 243 | if(uct > best_uct){ [INFO] [stderr] | ^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around `if` condition [INFO] [stderr] --> src/game_state.rs:53:12 [INFO] [stderr] | [INFO] [stderr] 53 | if (column[i] == Color::Empty){ [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_parens)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around `if` condition [INFO] [stderr] --> src/monte_carlo.rs:243:19 [INFO] [stderr] | [INFO] [stderr] 243 | if(uct > best_uct){ [INFO] [stderr] | ^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unused variable: `item` [INFO] [stderr] --> src/game_state.rs:51:14 [INFO] [stderr] | [INFO] [stderr] 51 | fn push_back(item : Color, column : &mut [Color; 6]) -> usize{ [INFO] [stderr] | ^^^^ help: consider prefixing with an underscore: `_item` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `player` [INFO] [stderr] --> src/monte_carlo.rs:66:54 [INFO] [stderr] | [INFO] [stderr] 66 | pub fn run_simulation(state : game_state::GameState, player : game_state::Color) -> game_state::End{ [INFO] [stderr] | ^^^^^^ help: consider prefixing with an underscore: `_player` [INFO] [stderr] [INFO] [stderr] warning: function is never used: `optimal_move_highest_win` [INFO] [stderr] --> src/monte_carlo.rs:161:1 [INFO] [stderr] | [INFO] [stderr] 161 | fn optimal_move_highest_win(possible_moves : &Vec<(game_state::Move, &UCTData)>) -> game_state::Move{ [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: comparison is useless due to type limits [INFO] [stderr] --> src/game_state.rs:47:35 [INFO] [stderr] | [INFO] [stderr] 47 | (self.x <= BOARD_WIDTH && self.x >= 0) [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_comparisons)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable `stepX` should have a snake case name [INFO] [stderr] --> src/game_state.rs:109:62 [INFO] [stderr] | [INFO] [stderr] 109 | pub fn linear_match(&self, start_x : i32, start_y : i32, stepX : i32, stepY : i32, color : Color) -> bool{ [INFO] [stderr] | ^^^^^ help: convert the identifier to snake case: `step_x` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(non_snake_case)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable `stepY` should have a snake case name [INFO] [stderr] --> src/game_state.rs:109:75 [INFO] [stderr] | [INFO] [stderr] 109 | pub fn linear_match(&self, start_x : i32, start_y : i32, stepX : i32, stepY : i32, color : Color) -> bool{ [INFO] [stderr] | ^^^^^ help: convert the identifier to snake case: `step_y` [INFO] [stderr] [INFO] [stderr] warning: comparison is useless due to type limits [INFO] [stderr] --> src/game_state.rs:114:16 [INFO] [stderr] | [INFO] [stderr] 114 | if x < 0 || x >= BOARD_HEIGHT || y < 0 || y >= BOARD_WIDTH{ [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: comparison is useless due to type limits [INFO] [stderr] --> src/game_state.rs:114:46 [INFO] [stderr] | [INFO] [stderr] 114 | if x < 0 || x >= BOARD_HEIGHT || y < 0 || y >= BOARD_WIDTH{ [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `item` [INFO] [stderr] --> src/game_state.rs:51:14 [INFO] [stderr] | [INFO] [stderr] 51 | fn push_back(item : Color, column : &mut [Color; 6]) -> usize{ [INFO] [stderr] | ^^^^ help: consider prefixing with an underscore: `_item` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `player` [INFO] [stderr] --> src/monte_carlo.rs:66:54 [INFO] [stderr] | [INFO] [stderr] 66 | pub fn run_simulation(state : game_state::GameState, player : game_state::Color) -> game_state::End{ [INFO] [stderr] | ^^^^^^ help: consider prefixing with an underscore: `_player` [INFO] [stderr] [INFO] [stderr] warning: function is never used: `optimal_move_highest_win` [INFO] [stderr] --> src/monte_carlo.rs:161:1 [INFO] [stderr] | [INFO] [stderr] 161 | fn optimal_move_highest_win(possible_moves : &Vec<(game_state::Move, &UCTData)>) -> game_state::Move{ [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: comparison is useless due to type limits [INFO] [stderr] --> src/game_state.rs:47:35 [INFO] [stderr] | [INFO] [stderr] 47 | (self.x <= BOARD_WIDTH && self.x >= 0) [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_comparisons)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable `stepX` should have a snake case name [INFO] [stderr] --> src/game_state.rs:109:62 [INFO] [stderr] | [INFO] [stderr] 109 | pub fn linear_match(&self, start_x : i32, start_y : i32, stepX : i32, stepY : i32, color : Color) -> bool{ [INFO] [stderr] | ^^^^^ help: convert the identifier to snake case: `step_x` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(non_snake_case)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable `stepY` should have a snake case name [INFO] [stderr] --> src/game_state.rs:109:75 [INFO] [stderr] | [INFO] [stderr] 109 | pub fn linear_match(&self, start_x : i32, start_y : i32, stepX : i32, stepY : i32, color : Color) -> bool{ [INFO] [stderr] | ^^^^^ help: convert the identifier to snake case: `step_y` [INFO] [stderr] [INFO] [stderr] warning: comparison is useless due to type limits [INFO] [stderr] --> src/game_state.rs:114:16 [INFO] [stderr] | [INFO] [stderr] 114 | if x < 0 || x >= BOARD_HEIGHT || y < 0 || y >= BOARD_WIDTH{ [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: comparison is useless due to type limits [INFO] [stderr] --> src/game_state.rs:114:46 [INFO] [stderr] | [INFO] [stderr] 114 | if x < 0 || x >= BOARD_HEIGHT || y < 0 || y >= BOARD_WIDTH{ [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 2.38s [INFO] running `"docker" "inspect" "16c7857735ba6e641bc5fdcaea53d086f14cbb45f1c40a790ad147c55c3cfaca"` [INFO] running `"docker" "rm" "-f" "16c7857735ba6e641bc5fdcaea53d086f14cbb45f1c40a790ad147c55c3cfaca"` [INFO] [stdout] 16c7857735ba6e641bc5fdcaea53d086f14cbb45f1c40a790ad147c55c3cfaca