[INFO] fetching crate gridit 0.1.0...
[INFO] checking gridit-0.1.0 against 1.55.0 for beta-1.56-3
[INFO] extracting crate gridit 0.1.0 into /workspace/builds/worker-69/source
[INFO] validating manifest of crates.io crate gridit 0.1.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate gridit 0.1.0
[INFO] finished tweaking crates.io crate gridit 0.1.0
[INFO] tweaked toml for crates.io crate gridit 0.1.0 written to /workspace/builds/worker-69/source/Cargo.toml
[INFO] crate crates.io crate gridit 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-69/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-69/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0d39df7727fab948d8110646b03644210cc91983164d4dda929a61e698d5f69e
[INFO] running `Command { std: "docker" "start" "-a" "0d39df7727fab948d8110646b03644210cc91983164d4dda929a61e698d5f69e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0d39df7727fab948d8110646b03644210cc91983164d4dda929a61e698d5f69e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d39df7727fab948d8110646b03644210cc91983164d4dda929a61e698d5f69e", kill_on_drop: false }`
[INFO] [stdout] 0d39df7727fab948d8110646b03644210cc91983164d4dda929a61e698d5f69e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-69/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-69/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0d1273e33e02d1d1659a8c1128e593c6867d62c7823a9eb26b7d073f394d7278
[INFO] running `Command { std: "docker" "start" "-a" "0d1273e33e02d1d1659a8c1128e593c6867d62c7823a9eb26b7d073f394d7278", kill_on_drop: false }`
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[INFO] [stdout] warning: unused import: `PositionsEnumerator`
[INFO] [stdout]  --> examples/board/piece/giraffe.rs:3:30
[INFO] [stdout]   |
[INFO] [stdout] 3 | use gridit::{Grid, Position, PositionsEnumerator};
[INFO] [stdout]   |                              ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `grid`
[INFO] [stdout]   --> examples/board/piece/giraffe.rs:21:30
[INFO] [stdout]    |
[INFO] [stdout] 21 |     fn possible_moves(&self, grid: &Grid<BoardPiece>, pos: Position) -> Vec<Position> {
[INFO] [stdout]    |                              ^^^^ help: if this is intentional, prefix it with an underscore: `_grid`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pos`
[INFO] [stdout]   --> examples/board/piece/giraffe.rs:21:55
[INFO] [stdout]    |
[INFO] [stdout] 21 |     fn possible_moves(&self, grid: &Grid<BoardPiece>, pos: Position) -> Vec<Position> {
[INFO] [stdout]    |                                                       ^^^ help: if this is intentional, prefix it with an underscore: `_pos`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> examples/board/main.rs:80:13
[INFO] [stdout]    |
[INFO] [stdout] 80 |         let mut grid = gridit::Grid::from(start_board, 8, 8);
[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: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 52.42s
[INFO] running `Command { std: "docker" "inspect" "0d1273e33e02d1d1659a8c1128e593c6867d62c7823a9eb26b7d073f394d7278", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d1273e33e02d1d1659a8c1128e593c6867d62c7823a9eb26b7d073f394d7278", kill_on_drop: false }`
[INFO] [stdout] 0d1273e33e02d1d1659a8c1128e593c6867d62c7823a9eb26b7d073f394d7278
