[INFO] updating cached repository https://github.com/ergor/fry
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] [stderr] From https://github.com/ergor/fry
[INFO] [stderr]    de453d1..2bef49e  master     -> master
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2bef49e92e7667359b65f3a77c375f357b0183e8
[INFO] checking ergor/fry against master#73f76b74efcaf21bd5424d87c66cd6ed7fe5c7de for pr-68325
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fergor%2Ffry" "/workspace/builds/worker-2/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ergor/fry on toolchain 73f76b74efcaf21bd5424d87c66cd6ed7fe5c7de
[INFO] running `"/workspace/cargo-home/bin/cargo" "+73f76b74efcaf21bd5424d87c66cd6ed7fe5c7de" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/ergor/fry
[INFO] finished tweaking git repo https://github.com/ergor/fry
[INFO] tweaked toml for git repo https://github.com/ergor/fry written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/ergor/fry already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+73f76b74efcaf21bd5424d87c66cd6ed7fe5c7de" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+73f76b74efcaf21bd5424d87c66cd6ed7fe5c7de" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a7cea6f0da624700c304e34773ee9584e63b674b8c459ec11e35a0531b8cf6ba
[INFO] running `"docker" "start" "-a" "a7cea6f0da624700c304e34773ee9584e63b674b8c459ec11e35a0531b8cf6ba"`
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking san-rs v0.3.0
[INFO] [stderr]     Checking fry-chess v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused imports: `Bishop`, `Knight`, `Queen`, `Rook`
[INFO] [stderr]  --> src/generator.rs:3:34
[INFO] [stderr]   |
[INFO] [stderr] 3 | use crate::chess_structs::Kind::{Knight, Rook, Bishop, Queen};
[INFO] [stderr]   |                                  ^^^^^^  ^^^^  ^^^^^^  ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Board`, `Color`, `Index2D`, `Kind`, `Piece`
[INFO] [stderr]    --> src/generator.rs:604:32
[INFO] [stderr]     |
[INFO] [stderr] 604 |     use crate::chess_structs::{Board, Piece, Index2D, Color, Kind};
[INFO] [stderr]     |                                ^^^^^  ^^^^^  ^^^^^^^  ^^^^^  ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `BishopItr`, `KingItr`, `KnightItr`, `RookItr`
[INFO] [stderr]    --> src/generator.rs:605:28
[INFO] [stderr]     |
[INFO] [stderr] 605 |     use crate::generator::{KingItr, KnightItr, RookItr, BishopItr};
[INFO] [stderr]     |                            ^^^^^^^  ^^^^^^^^^  ^^^^^^^  ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::generator`
[INFO] [stderr]    --> src/generator.rs:606:9
[INFO] [stderr]     |
[INFO] [stderr] 606 |     use crate::generator;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ArgMatches`
[INFO] [stderr]   --> src/main.rs:11:22
[INFO] [stderr]    |
[INFO] [stderr] 11 | use clap::{App, Arg, ArgMatches};
[INFO] [stderr]    |                      ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::Read`
[INFO] [stderr]   --> src/main.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 | use std::io::Read;
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Bishop`, `Knight`, `Queen`, `Rook`
[INFO] [stderr]  --> src/generator.rs:3:34
[INFO] [stderr]   |
[INFO] [stderr] 3 | use crate::chess_structs::Kind::{Knight, Rook, Bishop, Queen};
[INFO] [stderr]   |                                  ^^^^^^  ^^^^  ^^^^^^  ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ArgMatches`
[INFO] [stderr]   --> src/main.rs:11:22
[INFO] [stderr]    |
[INFO] [stderr] 11 | use clap::{App, Arg, ArgMatches};
[INFO] [stderr]    |                      ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::Read`
[INFO] [stderr]   --> src/main.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 | use std::io::Read;
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `load_file`
[INFO] [stderr]   --> src/main.rs:28:36
[INFO] [stderr]    |
[INFO] [stderr] 28 |     let FryArgs {color: fry_color, load_file } = match parse_args() {
[INFO] [stderr]    |                                    ^^^^^^^^^ help: try ignoring the field: `load_file: _`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `game_state`
[INFO] [stderr]   --> src/main.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |     let game_state = GameState::new(fry_color, starting_board);
[INFO] [stderr]    |         ^^^^^^^^^^ help: consider prefixing with an underscore: `_game_state`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `plies`
[INFO] [stderr]   --> src/main.rs:61:9
[INFO] [stderr]    |
[INFO] [stderr] 61 |     let plies = 0; // half moves played
[INFO] [stderr]    |         ^^^^^ help: consider prefixing with an underscore: `_plies`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `player_move`
[INFO] [stderr]   --> src/main.rs:75:17
[INFO] [stderr]    |
[INFO] [stderr] 75 |             let player_move = std::io::stdin().read_line(&mut read_buf);
[INFO] [stderr]    |                 ^^^^^^^^^^^ help: consider prefixing with an underscore: `_player_move`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/chess_structs.rs:109:5
[INFO] [stderr]     |
[INFO] [stderr] 109 | /     pub fn new(turn: Color,
[INFO] [stderr] 110 | |                en_passant: Option<Index2D>,
[INFO] [stderr] 111 | |                white_kingside: bool,
[INFO] [stderr] 112 | |                white_queenside: bool,
[INFO] [stderr] ...   |
[INFO] [stderr] 129 | |         }
[INFO] [stderr] 130 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Bishop`
[INFO] [stderr]    --> src/chess_structs.rs:136:5
[INFO] [stderr]     |
[INFO] [stderr] 136 |     Bishop,
[INFO] [stderr]     |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Knight`
[INFO] [stderr]    --> src/chess_structs.rs:137:5
[INFO] [stderr]     |
[INFO] [stderr] 137 |     Knight,
[INFO] [stderr]     |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `fry_color`
[INFO] [stderr]  --> src/game_state.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     fry_color: Color,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `board_state`
[INFO] [stderr]  --> src/game_state.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     board_state: Board,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `half_moves`
[INFO] [stderr]  --> src/game_state.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     half_moves: i32,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `moves`
[INFO] [stderr]  --> src/game_state.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     moves: Vec<Move>,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `load_file`
[INFO] [stderr]   --> src/main.rs:28:36
[INFO] [stderr]    |
[INFO] [stderr] 28 |     let FryArgs {color: fry_color, load_file } = match parse_args() {
[INFO] [stderr]    |                                    ^^^^^^^^^ help: try ignoring the field: `load_file: _`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `game_state`
[INFO] [stderr]   --> src/main.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |     let game_state = GameState::new(fry_color, starting_board);
[INFO] [stderr]    |         ^^^^^^^^^^ help: consider prefixing with an underscore: `_game_state`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `plies`
[INFO] [stderr]   --> src/main.rs:61:9
[INFO] [stderr]    |
[INFO] [stderr] 61 |     let plies = 0; // half moves played
[INFO] [stderr]    |         ^^^^^ help: consider prefixing with an underscore: `_plies`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `player_move`
[INFO] [stderr]   --> src/main.rs:75:17
[INFO] [stderr]    |
[INFO] [stderr] 75 |             let player_move = std::io::stdin().read_line(&mut read_buf);
[INFO] [stderr]    |                 ^^^^^^^^^^^ help: consider prefixing with an underscore: `_player_move`
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `fry_color`
[INFO] [stderr]  --> src/game_state.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     fry_color: Color,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `board_state`
[INFO] [stderr]  --> src/game_state.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     board_state: Board,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `half_moves`
[INFO] [stderr]  --> src/game_state.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     half_moves: i32,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `moves`
[INFO] [stderr]  --> src/game_state.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     moves: Vec<Move>,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.44s
[INFO] running `"docker" "inspect" "a7cea6f0da624700c304e34773ee9584e63b674b8c459ec11e35a0531b8cf6ba"`
[INFO] running `"docker" "rm" "-f" "a7cea6f0da624700c304e34773ee9584e63b674b8c459ec11e35a0531b8cf6ba"`
[INFO] [stdout] a7cea6f0da624700c304e34773ee9584e63b674b8c459ec11e35a0531b8cf6ba