[INFO] updating cached repository https://github.com/ekarademir/rust-learning-chess-term
[INFO] running `Command { std: "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", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2f17571e160bdb5fce6396e6d142396fa10befe2
[INFO] checking ekarademir/rust-learning-chess-term against master#8ac1525e091d3db28e67adcbbd6db1e1deaa37fb for pr-73323
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fekarademir%2Frust-learning-chess-term" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ekarademir/rust-learning-chess-term on toolchain 8ac1525e091d3db28e67adcbbd6db1e1deaa37fb
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8ac1525e091d3db28e67adcbbd6db1e1deaa37fb" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ekarademir/rust-learning-chess-term
[INFO] finished tweaking git repo https://github.com/ekarademir/rust-learning-chess-term
[INFO] tweaked toml for git repo https://github.com/ekarademir/rust-learning-chess-term written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/ekarademir/rust-learning-chess-term already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8ac1525e091d3db28e67adcbbd6db1e1deaa37fb" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+8ac1525e091d3db28e67adcbbd6db1e1deaa37fb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 612c43877b51a8e1fc7f2a163fa20141356c63eedf86a4b3c8a81ec6848fbf7d
[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" "612c43877b51a8e1fc7f2a163fa20141356c63eedf86a4b3c8a81ec6848fbf7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "612c43877b51a8e1fc7f2a163fa20141356c63eedf86a4b3c8a81ec6848fbf7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "612c43877b51a8e1fc7f2a163fa20141356c63eedf86a4b3c8a81ec6848fbf7d", kill_on_drop: false }`
[INFO] [stdout] 612c43877b51a8e1fc7f2a163fa20141356c63eedf86a4b3c8a81ec6848fbf7d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+8ac1525e091d3db28e67adcbbd6db1e1deaa37fb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 808971aa9c50a5095e7b991e2ac4af998460452f0720522d0dfb2b98d6927c08
[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" "808971aa9c50a5095e7b991e2ac4af998460452f0720522d0dfb2b98d6927c08", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.54
[INFO] [stderr]     Checking numtoa v0.1.0
[INFO] [stderr]     Checking termion v1.5.2
[INFO] [stderr]     Checking chess-player v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/chessboard.rs:136:24
[INFO] [stdout]     |
[INFO] [stdout] 136 |     piecemap : HashMap<(Piece), Vec<(usize, usize)> >,  // (PIECETYPE, NUMBER) -> (ROW, COL)
[INFO] [stdout]     |                        ^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/chessboard.rs:199:63
[INFO] [stdout]     |
[INFO] [stdout] 199 |     fn build_piecemap(boardstate: [[Piece; 8]; 8]) -> HashMap<(Piece), Vec<(usize, usize)> > {
[INFO] [stdout]     |                                                               ^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/chessboard.rs:136:24
[INFO] [stdout]     |
[INFO] [stdout] 136 |     piecemap : HashMap<(Piece), Vec<(usize, usize)> >,  // (PIECETYPE, NUMBER) -> (ROW, COL)
[INFO] [stdout]     |                        ^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/chessboard.rs:199:63
[INFO] [stdout]     |
[INFO] [stdout] 199 |     fn build_piecemap(boardstate: [[Piece; 8]; 8]) -> HashMap<(Piece), Vec<(usize, usize)> > {
[INFO] [stdout]     |                                                               ^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Takes`
[INFO] [stdout]    --> src/chessboard.rs:122:5
[INFO] [stdout]     |
[INFO] [stdout] 122 |     Takes,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Promoted`
[INFO] [stdout]    --> src/chessboard.rs:123:5
[INFO] [stdout]     |
[INFO] [stdout] 123 |     Promoted,
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Castled`
[INFO] [stdout]    --> src/chessboard.rs:124:5
[INFO] [stdout]     |
[INFO] [stdout] 124 |     Castled,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Takes`
[INFO] [stdout]    --> src/chessboard.rs:122:5
[INFO] [stdout]     |
[INFO] [stdout] 122 |     Takes,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Promoted`
[INFO] [stdout]    --> src/chessboard.rs:123:5
[INFO] [stdout]     |
[INFO] [stdout] 123 |     Promoted,
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Castled`
[INFO] [stdout]    --> src/chessboard.rs:124:5
[INFO] [stdout]     |
[INFO] [stdout] 124 |     Castled,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.17s
[INFO] running `Command { std: "docker" "inspect" "808971aa9c50a5095e7b991e2ac4af998460452f0720522d0dfb2b98d6927c08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "808971aa9c50a5095e7b991e2ac4af998460452f0720522d0dfb2b98d6927c08", kill_on_drop: false }`
[INFO] [stdout] 808971aa9c50a5095e7b991e2ac4af998460452f0720522d0dfb2b98d6927c08