[INFO] cloning repository https://github.com/levinotik/duchess
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/levinotik/duchess" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flevinotik%2Fduchess", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flevinotik%2Fduchess'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a2514126ac606b14437bf86abe77064dd92d6cd3
[INFO] checking levinotik/duchess against try#da4929024a7261062885cb3209c9d7fdc919d233 for pr-135536
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flevinotik%2Fduchess" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/levinotik/duchess on toolchain da4929024a7261062885cb3209c9d7fdc919d233
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+da4929024a7261062885cb3209c9d7fdc919d233" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/levinotik/duchess
[INFO] finished tweaking git repo https://github.com/levinotik/duchess
[INFO] tweaked toml for git repo https://github.com/levinotik/duchess written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/levinotik/duchess 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" "+da4929024a7261062885cb3209c9d7fdc919d233" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:819108c5571ea2e421544af4d832f968d213c87fbe3707a016657f43d2f853bc" "/opt/rustwide/cargo-home/bin/cargo" "+da4929024a7261062885cb3209c9d7fdc919d233" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 69b872e7b3aaabca834f7f75ccb4318f9cf0abfd17fa14e8e7625ded9b493fbf
[INFO] running `Command { std: "docker" "start" "-a" "69b872e7b3aaabca834f7f75ccb4318f9cf0abfd17fa14e8e7625ded9b493fbf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "69b872e7b3aaabca834f7f75ccb4318f9cf0abfd17fa14e8e7625ded9b493fbf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69b872e7b3aaabca834f7f75ccb4318f9cf0abfd17fa14e8e7625ded9b493fbf", kill_on_drop: false }`
[INFO] [stdout] 69b872e7b3aaabca834f7f75ccb4318f9cf0abfd17fa14e8e7625ded9b493fbf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:819108c5571ea2e421544af4d832f968d213c87fbe3707a016657f43d2f853bc" "/opt/rustwide/cargo-home/bin/cargo" "+da4929024a7261062885cb3209c9d7fdc919d233" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 200507075f0b2f699ac4f1c08c5b5204c3289d234c30d0717a0c9478e699d875
[INFO] running `Command { std: "docker" "start" "-a" "200507075f0b2f699ac4f1c08c5b5204c3289d234c30d0717a0c9478e699d875", kill_on_drop: false }`
[INFO] [stderr]     Checking duchess v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `A2`
[INFO] [stdout]    --> src/lib.rs:107:37
[INFO] [stdout]     |
[INFO] [stdout] 107 |         use self::Coordinates::{A1, A2};
[INFO] [stdout]     |                                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::Piece`
[INFO] [stdout]    --> src/lib.rs:108:13
[INFO] [stdout]     |
[INFO] [stdout] 108 |         use self::Piece;
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `A2`
[INFO] [stdout]    --> src/lib.rs:107:37
[INFO] [stdout]     |
[INFO] [stdout] 107 |         use self::Coordinates::{A1, A2};
[INFO] [stdout]     |                                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::Piece`
[INFO] [stdout]    --> src/lib.rs:108:13
[INFO] [stdout]     |
[INFO] [stdout] 108 |         use self::Piece;
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `PieceType` is never used
[INFO] [stdout]  --> src/lib.rs:2:6
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum PieceType {
[INFO] [stdout]   |      ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Black` is never constructed
[INFO] [stdout]   --> src/lib.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | enum PieceColor {
[INFO] [stdout]    |      ---------- variant in this enum
[INFO] [stdout] 13 |     Black,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `PieceColor` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Piece` is never constructed
[INFO] [stdout]   --> src/lib.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | struct Piece {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `coordinates` is never read
[INFO] [stdout]   --> src/lib.rs:91:5
[INFO] [stdout]    |
[INFO] [stdout] 90 | pub struct Square {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 91 |     coordinates: Coordinates,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `squares` and `next_move` are never read
[INFO] [stdout]   --> src/lib.rs:95:5
[INFO] [stdout]    |
[INFO] [stdout] 94 | pub struct Board {
[INFO] [stdout]    |            ----- fields in this struct
[INFO] [stdout] 95 |     squares: Vec<Square>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 96 |     next_move: Player,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/lib.rs:100:15
[INFO] [stdout]     |
[INFO] [stdout] 100 | struct Player(PieceColor);
[INFO] [stdout]     |        ------ ^^^^^^^^^^
[INFO] [stdout]     |        |
[INFO] [stdout]     |        field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout]     = note: `Player` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Pos` is never constructed
[INFO] [stdout]    --> src/lib.rs:102:8
[INFO] [stdout]     |
[INFO] [stdout] 102 | struct Pos;
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `PieceType` is never used
[INFO] [stdout]  --> src/lib.rs:2:6
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum PieceType {
[INFO] [stdout]   |      ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Black` is never constructed
[INFO] [stdout]   --> src/lib.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | enum PieceColor {
[INFO] [stdout]    |      ---------- variant in this enum
[INFO] [stdout] 13 |     Black,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `PieceColor` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Piece` is never constructed
[INFO] [stdout]   --> src/lib.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | struct Piece {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `coordinates` is never read
[INFO] [stdout]   --> src/lib.rs:91:5
[INFO] [stdout]    |
[INFO] [stdout] 90 | pub struct Square {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 91 |     coordinates: Coordinates,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `squares` is never read
[INFO] [stdout]   --> src/lib.rs:95:5
[INFO] [stdout]    |
[INFO] [stdout] 94 | pub struct Board {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] 95 |     squares: Vec<Square>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Pos` is never constructed
[INFO] [stdout]    --> src/lib.rs:102:8
[INFO] [stdout]     |
[INFO] [stdout] 102 | struct Pos;
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: found module declaration for lib.rs
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | mod lib;
[INFO] [stdout]   | ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: lib.rs is the root of this crate's library target
[INFO] [stdout]   = help: to refer to it from other targets, use the library's name as the path
[INFO] [stdout]   = note: `#[warn(special_module_name)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `A2`
[INFO] [stdout]    --> src/lib.rs:107:37
[INFO] [stdout]     |
[INFO] [stdout] 107 |         use self::Coordinates::{A1, A2};
[INFO] [stdout]     |                                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::Piece`
[INFO] [stdout]    --> src/lib.rs:108:13
[INFO] [stdout]     |
[INFO] [stdout] 108 |         use self::Piece;
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: found module declaration for lib.rs
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | mod lib;
[INFO] [stdout]   | ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: lib.rs is the root of this crate's library target
[INFO] [stdout]   = help: to refer to it from other targets, use the library's name as the path
[INFO] [stdout]   = note: `#[warn(special_module_name)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `A2`
[INFO] [stdout]    --> src/lib.rs:107:37
[INFO] [stdout]     |
[INFO] [stdout] 107 |         use self::Coordinates::{A1, A2};
[INFO] [stdout]     |                                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::Piece`
[INFO] [stdout]    --> src/lib.rs:108:13
[INFO] [stdout]     |
[INFO] [stdout] 108 |         use self::Piece;
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `PieceType` is never used
[INFO] [stdout]  --> src/lib.rs:2:6
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum PieceType {
[INFO] [stdout]   |      ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Black` is never constructed
[INFO] [stdout]   --> src/lib.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | enum PieceColor {
[INFO] [stdout]    |      ---------- variant in this enum
[INFO] [stdout] 13 |     Black,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `PieceColor` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Piece` is never constructed
[INFO] [stdout]   --> src/lib.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | struct Piece {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple variants are never constructed
[INFO] [stdout]   --> src/lib.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub enum Coordinates {
[INFO] [stdout]    |          ----------- variants in this enum
[INFO] [stdout] 24 |     A1,
[INFO] [stdout] 25 |     A2,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 26 |     A3,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 27 |     A4,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 28 |     A5,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 29 |     A6,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 30 |     A7,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 31 |     A8,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 32 |     B1,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 33 |     B2,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 34 |     B3,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 35 |     B4,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 36 |     B5,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 37 |     B6,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 38 |     B7,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 39 |     B8,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 40 |     C1,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 41 |     C2,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 42 |     C3,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 43 |     C4,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 44 |     C5,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 45 |     C6,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 46 |     C7,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 47 |     C8,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 48 |     D1,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 49 |     D2,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 50 |     D3,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 51 |     D4,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 52 |     D5,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 53 |     D6,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 54 |     D7,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 55 |     D8,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 56 |     E1,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 57 |     E2,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 58 |     E3,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 59 |     E4,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 60 |     E5,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 61 |     E6,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 62 |     E7,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 63 |     E8,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 64 |     F1,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 65 |     F2,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 66 |     F3,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 67 |     F4,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 68 |     F5,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 69 |     F6,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 70 |     F7,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 71 |     F8,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 72 |     G1,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 73 |     G2,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 74 |     G3,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 75 |     G4,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 76 |     G5,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 77 |     G6,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 78 |     G7,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 79 |     G8,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 80 |     H1,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 81 |     H2,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 82 |     H3,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 83 |     H4,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 84 |     H5,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 85 |     H6,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 86 |     H7,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 87 |     H8,
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Coordinates` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `coordinates` is never read
[INFO] [stdout]   --> src/lib.rs:91:5
[INFO] [stdout]    |
[INFO] [stdout] 90 | pub struct Square {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 91 |     coordinates: Coordinates,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `squares` and `next_move` are never read
[INFO] [stdout]   --> src/lib.rs:95:5
[INFO] [stdout]    |
[INFO] [stdout] 94 | pub struct Board {
[INFO] [stdout]    |            ----- fields in this struct
[INFO] [stdout] 95 |     squares: Vec<Square>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 96 |     next_move: Player,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/lib.rs:100:15
[INFO] [stdout]     |
[INFO] [stdout] 100 | struct Player(PieceColor);
[INFO] [stdout]     |        ------ ^^^^^^^^^^
[INFO] [stdout]     |        |
[INFO] [stdout]     |        field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout]     = note: `Player` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Pos` is never constructed
[INFO] [stdout]    --> src/lib.rs:102:8
[INFO] [stdout]     |
[INFO] [stdout] 102 | struct Pos;
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `PieceType` is never used
[INFO] [stdout]  --> src/lib.rs:2:6
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum PieceType {
[INFO] [stdout]   |      ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Black` is never constructed
[INFO] [stdout]   --> src/lib.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | enum PieceColor {
[INFO] [stdout]    |      ---------- variant in this enum
[INFO] [stdout] 13 |     Black,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `PieceColor` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Piece` is never constructed
[INFO] [stdout]   --> src/lib.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | struct Piece {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple variants are never constructed
[INFO] [stdout]   --> src/lib.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub enum Coordinates {
[INFO] [stdout]    |          ----------- variants in this enum
[INFO] [stdout] 24 |     A1,
[INFO] [stdout] 25 |     A2,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 26 |     A3,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 27 |     A4,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 28 |     A5,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 29 |     A6,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 30 |     A7,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 31 |     A8,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 32 |     B1,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 33 |     B2,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 34 |     B3,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 35 |     B4,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 36 |     B5,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 37 |     B6,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 38 |     B7,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 39 |     B8,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 40 |     C1,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 41 |     C2,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 42 |     C3,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 43 |     C4,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 44 |     C5,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 45 |     C6,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 46 |     C7,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 47 |     C8,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 48 |     D1,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 49 |     D2,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 50 |     D3,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 51 |     D4,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 52 |     D5,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 53 |     D6,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 54 |     D7,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 55 |     D8,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 56 |     E1,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 57 |     E2,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 58 |     E3,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 59 |     E4,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 60 |     E5,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 61 |     E6,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 62 |     E7,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 63 |     E8,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 64 |     F1,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 65 |     F2,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 66 |     F3,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 67 |     F4,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 68 |     F5,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 69 |     F6,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 70 |     F7,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 71 |     F8,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 72 |     G1,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 73 |     G2,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 74 |     G3,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 75 |     G4,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 76 |     G5,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 77 |     G6,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 78 |     G7,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 79 |     G8,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 80 |     H1,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 81 |     H2,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 82 |     H3,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 83 |     H4,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 84 |     H5,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 85 |     H6,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 86 |     H7,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 87 |     H8,
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Coordinates` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `coordinates` is never read
[INFO] [stdout]   --> src/lib.rs:91:5
[INFO] [stdout]    |
[INFO] [stdout] 90 | pub struct Square {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 91 |     coordinates: Coordinates,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `squares` is never read
[INFO] [stdout]   --> src/lib.rs:95:5
[INFO] [stdout]    |
[INFO] [stdout] 94 | pub struct Board {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] 95 |     squares: Vec<Square>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Pos` is never constructed
[INFO] [stdout]    --> src/lib.rs:102:8
[INFO] [stdout]     |
[INFO] [stdout] 102 | struct Pos;
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.16s
[INFO] running `Command { std: "docker" "inspect" "200507075f0b2f699ac4f1c08c5b5204c3289d234c30d0717a0c9478e699d875", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "200507075f0b2f699ac4f1c08c5b5204c3289d234c30d0717a0c9478e699d875", kill_on_drop: false }`
[INFO] [stdout] 200507075f0b2f699ac4f1c08c5b5204c3289d234c30d0717a0c9478e699d875