[INFO] cloning repository https://github.com/aygharib/chess-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/aygharib/chess-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faygharib%2Fchess-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faygharib%2Fchess-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f958a48908a07e9418d09a6b9379d72332231e6a
[INFO] checking aygharib/chess-rust against try#987a165cfab916796a8315782b83ac460a651ce2 for pr-145262
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faygharib%2Fchess-rust" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/aygharib/chess-rust
[INFO] finished tweaking git repo https://github.com/aygharib/chess-rust
[INFO] tweaked toml for git repo https://github.com/aygharib/chess-rust written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/aygharib/chess-rust on toolchain 987a165cfab916796a8315782b83ac460a651ce2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+987a165cfab916796a8315782b83ac460a651ce2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/aygharib/chess-rust 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" "+987a165cfab916796a8315782b83ac460a651ce2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+987a165cfab916796a8315782b83ac460a651ce2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 384dde667809cdb897fc8f42c0f8908e805a5138f85283b38e6d2eef6f300ca5
[INFO] running `Command { std: "docker" "start" "-a" "384dde667809cdb897fc8f42c0f8908e805a5138f85283b38e6d2eef6f300ca5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "384dde667809cdb897fc8f42c0f8908e805a5138f85283b38e6d2eef6f300ca5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "384dde667809cdb897fc8f42c0f8908e805a5138f85283b38e6d2eef6f300ca5", kill_on_drop: false }`
[INFO] [stdout] 384dde667809cdb897fc8f42c0f8908e805a5138f85283b38e6d2eef6f300ca5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+987a165cfab916796a8315782b83ac460a651ce2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2194f0db78a37df2401f36831cf08bbac2a11250d0c2d89dd9c2c518a563f6d0
[INFO] running `Command { std: "docker" "start" "-a" "2194f0db78a37df2401f36831cf08bbac2a11250d0c2d89dd9c2c518a563f6d0", kill_on_drop: false }`
[INFO] [stderr]     Checking lazy_static v1.5.0
[INFO] [stderr]     Checking colored v2.1.0
[INFO] [stderr]     Checking chess-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `board`
[INFO] [stdout]  --> src/main.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let board = Board {
[INFO] [stdout]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_board`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `board`
[INFO] [stdout]  --> src/main.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let board = Board {
[INFO] [stdout]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_board`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `color`
[INFO] [stdout]    --> src/main.rs:299:25
[INFO] [stdout]     |
[INFO] [stdout] 299 |             Piece::Rook(color) => {
[INFO] [stdout]     |                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_color`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `color`
[INFO] [stdout]    --> src/main.rs:341:26
[INFO] [stdout]     |
[INFO] [stdout] 341 |             Piece::Queen(color) => result,
[INFO] [stdout]     |                          ^^^^^ help: if this is intentional, prefix it with an underscore: `_color`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `color`
[INFO] [stdout]    --> src/main.rs:342:25
[INFO] [stdout]     |
[INFO] [stdout] 342 |             Piece::King(color) => result,
[INFO] [stdout]     |                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_color`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `color`
[INFO] [stdout]    --> src/main.rs:299:25
[INFO] [stdout]     |
[INFO] [stdout] 299 |             Piece::Rook(color) => {
[INFO] [stdout]     |                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_color`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `color`
[INFO] [stdout]    --> src/main.rs:341:26
[INFO] [stdout]     |
[INFO] [stdout] 341 |             Piece::Queen(color) => result,
[INFO] [stdout]     |                          ^^^^^ help: if this is intentional, prefix it with an underscore: `_color`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `color`
[INFO] [stdout]    --> src/main.rs:342:25
[INFO] [stdout]     |
[INFO] [stdout] 342 |             Piece::King(color) => result,
[INFO] [stdout]     |                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_color`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `row` and `col` are never read
[INFO] [stdout]   --> src/enums.rs:82:9
[INFO] [stdout]    |
[INFO] [stdout] 81 | pub struct Position {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 82 |     pub row: usize,
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 83 |     pub col: usize,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Position` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `row` and `col` are never read
[INFO] [stdout]   --> src/enums.rs:82:9
[INFO] [stdout]    |
[INFO] [stdout] 81 | pub struct Position {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 82 |     pub row: usize,
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 83 |     pub col: usize,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Position` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.20s
[INFO] running `Command { std: "docker" "inspect" "2194f0db78a37df2401f36831cf08bbac2a11250d0c2d89dd9c2c518a563f6d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2194f0db78a37df2401f36831cf08bbac2a11250d0c2d89dd9c2c518a563f6d0", kill_on_drop: false }`
[INFO] [stdout] 2194f0db78a37df2401f36831cf08bbac2a11250d0c2d89dd9c2c518a563f6d0