[INFO] cloning repository https://github.com/levinotik/duchess
[INFO] running `"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"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flevinotik%2Fduchess'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a2514126ac606b14437bf86abe77064dd92d6cd3
[INFO] checking levinotik/duchess against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flevinotik%2Fduchess" "/workspace/builds/worker-0/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/levinotik/duchess on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[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-0/source/Cargo.toml
[INFO] crate git repo https://github.com/levinotik/duchess already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "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] 768a14e9213e6198e871ccefc9514863651af8376e4229770a7ca95913695dc7
[INFO] running `"docker" "start" "-a" "768a14e9213e6198e871ccefc9514863651af8376e4229770a7ca95913695dc7"`
[INFO] [stderr]     Checking duchess v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: the item `Square` is imported redundantly
[INFO] [stderr]    --> src/lib.rs:106:13
[INFO] [stderr]     |
[INFO] [stderr] 90  | / pub struct Square {
[INFO] [stderr] 91  | |     coordinates: Coordinates,
[INFO] [stderr] 92  | | }
[INFO] [stderr]     | |_- the item `Square` is already defined here
[INFO] [stderr] ...
[INFO] [stderr] 106 |           use self::Square;
[INFO] [stderr]     |               ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `A2`
[INFO] [stderr]    --> src/lib.rs:107:37
[INFO] [stderr]     |
[INFO] [stderr] 107 |         use self::Coordinates::{A1, A2};
[INFO] [stderr]     |                                     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Piece` is imported redundantly
[INFO] [stderr]    --> src/lib.rs:108:13
[INFO] [stderr]     |
[INFO] [stderr] 17  | / struct Piece {
[INFO] [stderr] 18  | |     piece_type: PieceType,
[INFO] [stderr] 19  | |     piece_color: PieceColor,
[INFO] [stderr] 20  | | }
[INFO] [stderr]     | |_- the item `Piece` is already defined here
[INFO] [stderr] ...
[INFO] [stderr] 108 |           use self::Piece;
[INFO] [stderr]     |               ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `self::Piece`
[INFO] [stderr]    --> src/lib.rs:108:13
[INFO] [stderr]     |
[INFO] [stderr] 108 |         use self::Piece;
[INFO] [stderr]     |             ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Player` is imported redundantly
[INFO] [stderr]    --> src/lib.rs:109:13
[INFO] [stderr]     |
[INFO] [stderr] 100 | struct Player(PieceColor);
[INFO] [stderr]     | -------------------------- the item `Player` is already defined here
[INFO] [stderr] ...
[INFO] [stderr] 109 |         use self::Player;
[INFO] [stderr]     |             ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `PieceColor` is imported redundantly
[INFO] [stderr]    --> src/lib.rs:110:13
[INFO] [stderr]     |
[INFO] [stderr] 12  | / enum PieceColor {
[INFO] [stderr] 13  | |     Black,
[INFO] [stderr] 14  | |     White,
[INFO] [stderr] 15  | | }
[INFO] [stderr]     | |_- the item `PieceColor` is already defined here
[INFO] [stderr] ...
[INFO] [stderr] 110 |           use self::PieceColor;
[INFO] [stderr]     |               ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Pawn`
[INFO] [stderr]  --> src/lib.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     Pawn,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Knight`
[INFO] [stderr]  --> src/lib.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     Knight,
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Bishop`
[INFO] [stderr]  --> src/lib.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     Bishop,
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Rook`
[INFO] [stderr]  --> src/lib.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     Rook,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Queen`
[INFO] [stderr]  --> src/lib.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     Queen,
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `King`
[INFO] [stderr]  --> src/lib.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     King,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Black`
[INFO] [stderr]   --> src/lib.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     Black,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Piece`
[INFO] [stderr]   --> src/lib.rs:17:8
[INFO] [stderr]    |
[INFO] [stderr] 17 | struct Piece {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `coordinates`
[INFO] [stderr]   --> src/lib.rs:91:5
[INFO] [stderr]    |
[INFO] [stderr] 91 |     coordinates: Coordinates,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `squares`
[INFO] [stderr]   --> src/lib.rs:95:5
[INFO] [stderr]    |
[INFO] [stderr] 95 |     squares: Vec<Square>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `next_move`
[INFO] [stderr]   --> src/lib.rs:96:5
[INFO] [stderr]    |
[INFO] [stderr] 96 |     next_move: Player,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Pos`
[INFO] [stderr]    --> src/lib.rs:102:8
[INFO] [stderr]     |
[INFO] [stderr] 102 | struct Pos;
[INFO] [stderr]     |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 18 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Square` is imported redundantly
[INFO] [stderr]    --> src/lib.rs:106:13
[INFO] [stderr]     |
[INFO] [stderr] 90  | / pub struct Square {
[INFO] [stderr] 91  | |     coordinates: Coordinates,
[INFO] [stderr] 92  | | }
[INFO] [stderr]     | |_- the item `Square` is already defined here
[INFO] [stderr] ...
[INFO] [stderr] 106 |           use self::Square;
[INFO] [stderr]     |               ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `A2`
[INFO] [stderr]    --> src/lib.rs:107:37
[INFO] [stderr]     |
[INFO] [stderr] 107 |         use self::Coordinates::{A1, A2};
[INFO] [stderr]     |                                     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Piece` is imported redundantly
[INFO] [stderr]    --> src/lib.rs:108:13
[INFO] [stderr]     |
[INFO] [stderr] 17  | / struct Piece {
[INFO] [stderr] 18  | |     piece_type: PieceType,
[INFO] [stderr] 19  | |     piece_color: PieceColor,
[INFO] [stderr] 20  | | }
[INFO] [stderr]     | |_- the item `Piece` is already defined here
[INFO] [stderr] ...
[INFO] [stderr] 108 |           use self::Piece;
[INFO] [stderr]     |               ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `self::Piece`
[INFO] [stderr]    --> src/lib.rs:108:13
[INFO] [stderr]     |
[INFO] [stderr] 108 |         use self::Piece;
[INFO] [stderr]     |             ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Player` is imported redundantly
[INFO] [stderr]    --> src/lib.rs:109:13
[INFO] [stderr]     |
[INFO] [stderr] 100 | struct Player(PieceColor);
[INFO] [stderr]     | -------------------------- the item `Player` is already defined here
[INFO] [stderr] ...
[INFO] [stderr] 109 |         use self::Player;
[INFO] [stderr]     |             ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `PieceColor` is imported redundantly
[INFO] [stderr]    --> src/lib.rs:110:13
[INFO] [stderr]     |
[INFO] [stderr] 12  | / enum PieceColor {
[INFO] [stderr] 13  | |     Black,
[INFO] [stderr] 14  | |     White,
[INFO] [stderr] 15  | | }
[INFO] [stderr]     | |_- the item `PieceColor` is already defined here
[INFO] [stderr] ...
[INFO] [stderr] 110 |           use self::PieceColor;
[INFO] [stderr]     |               ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Pawn`
[INFO] [stderr]  --> src/lib.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     Pawn,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Knight`
[INFO] [stderr]  --> src/lib.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     Knight,
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Bishop`
[INFO] [stderr]  --> src/lib.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     Bishop,
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Rook`
[INFO] [stderr]  --> src/lib.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     Rook,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Queen`
[INFO] [stderr]  --> src/lib.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     Queen,
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `King`
[INFO] [stderr]  --> src/lib.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     King,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Black`
[INFO] [stderr]   --> src/lib.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     Black,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Piece`
[INFO] [stderr]   --> src/lib.rs:17:8
[INFO] [stderr]    |
[INFO] [stderr] 17 | struct Piece {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `coordinates`
[INFO] [stderr]   --> src/lib.rs:91:5
[INFO] [stderr]    |
[INFO] [stderr] 91 |     coordinates: Coordinates,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `squares`
[INFO] [stderr]   --> src/lib.rs:95:5
[INFO] [stderr]    |
[INFO] [stderr] 95 |     squares: Vec<Square>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Pos`
[INFO] [stderr]    --> src/lib.rs:102:8
[INFO] [stderr]     |
[INFO] [stderr] 102 | struct Pos;
[INFO] [stderr]     |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 17 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Square` is imported redundantly
[INFO] [stderr]    --> src/lib.rs:106:13
[INFO] [stderr]     |
[INFO] [stderr] 90  | / pub struct Square {
[INFO] [stderr] 91  | |     coordinates: Coordinates,
[INFO] [stderr] 92  | | }
[INFO] [stderr]     | |_- the item `Square` is already defined here
[INFO] [stderr] ...
[INFO] [stderr] 106 |           use self::Square;
[INFO] [stderr]     |               ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `A2`
[INFO] [stderr]    --> src/lib.rs:107:37
[INFO] [stderr]     |
[INFO] [stderr] 107 |         use self::Coordinates::{A1, A2};
[INFO] [stderr]     |                                     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Piece` is imported redundantly
[INFO] [stderr]    --> src/lib.rs:108:13
[INFO] [stderr]     |
[INFO] [stderr] 17  | / struct Piece {
[INFO] [stderr] 18  | |     piece_type: PieceType,
[INFO] [stderr] 19  | |     piece_color: PieceColor,
[INFO] [stderr] 20  | | }
[INFO] [stderr]     | |_- the item `Piece` is already defined here
[INFO] [stderr] ...
[INFO] [stderr] 108 |           use self::Piece;
[INFO] [stderr]     |               ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `self::Piece`
[INFO] [stderr]    --> src/lib.rs:108:13
[INFO] [stderr]     |
[INFO] [stderr] 108 |         use self::Piece;
[INFO] [stderr]     |             ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Player` is imported redundantly
[INFO] [stderr]    --> src/lib.rs:109:13
[INFO] [stderr]     |
[INFO] [stderr] 100 | struct Player(PieceColor);
[INFO] [stderr]     | -------------------------- the item `Player` is already defined here
[INFO] [stderr] ...
[INFO] [stderr] 109 |         use self::Player;
[INFO] [stderr]     |             ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `PieceColor` is imported redundantly
[INFO] [stderr]    --> src/lib.rs:110:13
[INFO] [stderr]     |
[INFO] [stderr] 12  | / enum PieceColor {
[INFO] [stderr] 13  | |     Black,
[INFO] [stderr] 14  | |     White,
[INFO] [stderr] 15  | | }
[INFO] [stderr]     | |_- the item `PieceColor` is already defined here
[INFO] [stderr] ...
[INFO] [stderr] 110 |           use self::PieceColor;
[INFO] [stderr]     |               ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Square` is imported redundantly
[INFO] [stderr]    --> src/lib.rs:106:13
[INFO] [stderr]     |
[INFO] [stderr] 90  | / pub struct Square {
[INFO] [stderr] 91  | |     coordinates: Coordinates,
[INFO] [stderr] 92  | | }
[INFO] [stderr]     | |_- the item `Square` is already defined here
[INFO] [stderr] ...
[INFO] [stderr] 106 |           use self::Square;
[INFO] [stderr]     |               ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `A2`
[INFO] [stderr]    --> src/lib.rs:107:37
[INFO] [stderr]     |
[INFO] [stderr] 107 |         use self::Coordinates::{A1, A2};
[INFO] [stderr]     |                                     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Piece` is imported redundantly
[INFO] [stderr]    --> src/lib.rs:108:13
[INFO] [stderr]     |
[INFO] [stderr] 17  | / struct Piece {
[INFO] [stderr] 18  | |     piece_type: PieceType,
[INFO] [stderr] 19  | |     piece_color: PieceColor,
[INFO] [stderr] 20  | | }
[INFO] [stderr]     | |_- the item `Piece` is already defined here
[INFO] [stderr] ...
[INFO] [stderr] 108 |           use self::Piece;
[INFO] [stderr]     |               ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `self::Piece`
[INFO] [stderr]    --> src/lib.rs:108:13
[INFO] [stderr]     |
[INFO] [stderr] 108 |         use self::Piece;
[INFO] [stderr]     |             ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Player` is imported redundantly
[INFO] [stderr]    --> src/lib.rs:109:13
[INFO] [stderr]     |
[INFO] [stderr] 100 | struct Player(PieceColor);
[INFO] [stderr]     | -------------------------- the item `Player` is already defined here
[INFO] [stderr] ...
[INFO] [stderr] 109 |         use self::Player;
[INFO] [stderr]     |             ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `PieceColor` is imported redundantly
[INFO] [stderr]    --> src/lib.rs:110:13
[INFO] [stderr]     |
[INFO] [stderr] 12  | / enum PieceColor {
[INFO] [stderr] 13  | |     Black,
[INFO] [stderr] 14  | |     White,
[INFO] [stderr] 15  | | }
[INFO] [stderr]     | |_- the item `PieceColor` is already defined here
[INFO] [stderr] ...
[INFO] [stderr] 110 |           use self::PieceColor;
[INFO] [stderr]     |               ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Pawn`
[INFO] [stderr]  --> src/lib.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     Pawn,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Knight`
[INFO] [stderr]  --> src/lib.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     Knight,
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Bishop`
[INFO] [stderr]  --> src/lib.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     Bishop,
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Rook`
[INFO] [stderr]  --> src/lib.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     Rook,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Queen`
[INFO] [stderr]  --> src/lib.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     Queen,
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `King`
[INFO] [stderr]  --> src/lib.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     King,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Black`
[INFO] [stderr]   --> src/lib.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     Black,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Piece`
[INFO] [stderr]   --> src/lib.rs:17:8
[INFO] [stderr]    |
[INFO] [stderr] 17 | struct Piece {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `A2`
[INFO] [stderr]   --> src/lib.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     A2,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `A3`
[INFO] [stderr]   --> src/lib.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     A3,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `A4`
[INFO] [stderr]   --> src/lib.rs:27:5
[INFO] [stderr]    |
[INFO] [stderr] 27 |     A4,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `A5`
[INFO] [stderr]   --> src/lib.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     A5,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `A6`
[INFO] [stderr]   --> src/lib.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     A6,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `A7`
[INFO] [stderr]   --> src/lib.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     A7,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `A8`
[INFO] [stderr]   --> src/lib.rs:31:5
[INFO] [stderr]    |
[INFO] [stderr] 31 |     A8,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `B1`
[INFO] [stderr]   --> src/lib.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 |     B1,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `B2`
[INFO] [stderr]   --> src/lib.rs:33:5
[INFO] [stderr]    |
[INFO] [stderr] 33 |     B2,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `B3`
[INFO] [stderr]   --> src/lib.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     B3,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `B4`
[INFO] [stderr]   --> src/lib.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 |     B4,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `B5`
[INFO] [stderr]   --> src/lib.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     B5,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `B6`
[INFO] [stderr]   --> src/lib.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     B6,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `B7`
[INFO] [stderr]   --> src/lib.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 38 |     B7,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `B8`
[INFO] [stderr]   --> src/lib.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     B8,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `C1`
[INFO] [stderr]   --> src/lib.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 |     C1,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `C2`
[INFO] [stderr]   --> src/lib.rs:41:5
[INFO] [stderr]    |
[INFO] [stderr] 41 |     C2,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `C3`
[INFO] [stderr]   --> src/lib.rs:42:5
[INFO] [stderr]    |
[INFO] [stderr] 42 |     C3,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `C4`
[INFO] [stderr]   --> src/lib.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 |     C4,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `C5`
[INFO] [stderr]   --> src/lib.rs:44:5
[INFO] [stderr]    |
[INFO] [stderr] 44 |     C5,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `C6`
[INFO] [stderr]   --> src/lib.rs:45:5
[INFO] [stderr]    |
[INFO] [stderr] 45 |     C6,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `C7`
[INFO] [stderr]   --> src/lib.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 |     C7,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `C8`
[INFO] [stderr]   --> src/lib.rs:47:5
[INFO] [stderr]    |
[INFO] [stderr] 47 |     C8,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `D1`
[INFO] [stderr]   --> src/lib.rs:48:5
[INFO] [stderr]    |
[INFO] [stderr] 48 |     D1,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `D2`
[INFO] [stderr]   --> src/lib.rs:49:5
[INFO] [stderr]    |
[INFO] [stderr] 49 |     D2,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `D3`
[INFO] [stderr]   --> src/lib.rs:50:5
[INFO] [stderr]    |
[INFO] [stderr] 50 |     D3,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `D4`
[INFO] [stderr]   --> src/lib.rs:51:5
[INFO] [stderr]    |
[INFO] [stderr] 51 |     D4,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `D5`
[INFO] [stderr]   --> src/lib.rs:52:5
[INFO] [stderr]    |
[INFO] [stderr] 52 |     D5,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `D6`
[INFO] [stderr]   --> src/lib.rs:53:5
[INFO] [stderr]    |
[INFO] [stderr] 53 |     D6,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `D7`
[INFO] [stderr]   --> src/lib.rs:54:5
[INFO] [stderr]    |
[INFO] [stderr] 54 |     D7,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `D8`
[INFO] [stderr]   --> src/lib.rs:55:5
[INFO] [stderr]    |
[INFO] [stderr] 55 |     D8,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `E1`
[INFO] [stderr]   --> src/lib.rs:56:5
[INFO] [stderr]    |
[INFO] [stderr] 56 |     E1,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `E2`
[INFO] [stderr]   --> src/lib.rs:57:5
[INFO] [stderr]    |
[INFO] [stderr] 57 |     E2,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `E3`
[INFO] [stderr]   --> src/lib.rs:58:5
[INFO] [stderr]    |
[INFO] [stderr] 58 |     E3,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `E4`
[INFO] [stderr]   --> src/lib.rs:59:5
[INFO] [stderr]    |
[INFO] [stderr] 59 |     E4,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `E5`
[INFO] [stderr]   --> src/lib.rs:60:5
[INFO] [stderr]    |
[INFO] [stderr] 60 |     E5,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `E6`
[INFO] [stderr]   --> src/lib.rs:61:5
[INFO] [stderr]    |
[INFO] [stderr] 61 |     E6,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `E7`
[INFO] [stderr]   --> src/lib.rs:62:5
[INFO] [stderr]    |
[INFO] [stderr] 62 |     E7,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `E8`
[INFO] [stderr]   --> src/lib.rs:63:5
[INFO] [stderr]    |
[INFO] [stderr] 63 |     E8,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `F1`
[INFO] [stderr]   --> src/lib.rs:64:5
[INFO] [stderr]    |
[INFO] [stderr] 64 |     F1,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `F2`
[INFO] [stderr]   --> src/lib.rs:65:5
[INFO] [stderr]    |
[INFO] [stderr] 65 |     F2,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `F3`
[INFO] [stderr]   --> src/lib.rs:66:5
[INFO] [stderr]    |
[INFO] [stderr] 66 |     F3,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `F4`
[INFO] [stderr]   --> src/lib.rs:67:5
[INFO] [stderr]    |
[INFO] [stderr] 67 |     F4,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `F5`
[INFO] [stderr]   --> src/lib.rs:68:5
[INFO] [stderr]    |
[INFO] [stderr] 68 |     F5,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `F6`
[INFO] [stderr]   --> src/lib.rs:69:5
[INFO] [stderr]    |
[INFO] [stderr] 69 |     F6,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `F7`
[INFO] [stderr]   --> src/lib.rs:70:5
[INFO] [stderr]    |
[INFO] [stderr] 70 |     F7,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `F8`
[INFO] [stderr]   --> src/lib.rs:71:5
[INFO] [stderr]    |
[INFO] [stderr] 71 |     F8,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `G1`
[INFO] [stderr]   --> src/lib.rs:72:5
[INFO] [stderr]    |
[INFO] [stderr] 72 |     G1,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `G2`
[INFO] [stderr]   --> src/lib.rs:73:5
[INFO] [stderr]    |
[INFO] [stderr] 73 |     G2,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `G3`
[INFO] [stderr]   --> src/lib.rs:74:5
[INFO] [stderr]    |
[INFO] [stderr] 74 |     G3,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `G4`
[INFO] [stderr]   --> src/lib.rs:75:5
[INFO] [stderr]    |
[INFO] [stderr] 75 |     G4,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `G5`
[INFO] [stderr]   --> src/lib.rs:76:5
[INFO] [stderr]    |
[INFO] [stderr] 76 |     G5,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `G6`
[INFO] [stderr]   --> src/lib.rs:77:5
[INFO] [stderr]    |
[INFO] [stderr] 77 |     G6,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `G7`
[INFO] [stderr]   --> src/lib.rs:78:5
[INFO] [stderr]    |
[INFO] [stderr] 78 |     G7,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `G8`
[INFO] [stderr]   --> src/lib.rs:79:5
[INFO] [stderr]    |
[INFO] [stderr] 79 |     G8,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `H1`
[INFO] [stderr]   --> src/lib.rs:80:5
[INFO] [stderr]    |
[INFO] [stderr] 80 |     H1,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `H2`
[INFO] [stderr]   --> src/lib.rs:81:5
[INFO] [stderr]    |
[INFO] [stderr] 81 |     H2,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `H3`
[INFO] [stderr]   --> src/lib.rs:82:5
[INFO] [stderr]    |
[INFO] [stderr] 82 |     H3,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `H4`
[INFO] [stderr]   --> src/lib.rs:83:5
[INFO] [stderr]    |
[INFO] [stderr] 83 |     H4,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `H5`
[INFO] [stderr]   --> src/lib.rs:84:5
[INFO] [stderr]    |
[INFO] [stderr] 84 |     H5,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `H6`
[INFO] [stderr]   --> src/lib.rs:85:5
[INFO] [stderr]    |
[INFO] [stderr] 85 |     H6,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `H7`
[INFO] [stderr]   --> src/lib.rs:86:5
[INFO] [stderr]    |
[INFO] [stderr] 86 |     H7,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `H8`
[INFO] [stderr]   --> src/lib.rs:87:5
[INFO] [stderr]    |
[INFO] [stderr] 87 |     H8,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `coordinates`
[INFO] [stderr]   --> src/lib.rs:91:5
[INFO] [stderr]    |
[INFO] [stderr] 91 |     coordinates: Coordinates,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `squares`
[INFO] [stderr]   --> src/lib.rs:95:5
[INFO] [stderr]    |
[INFO] [stderr] 95 |     squares: Vec<Square>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `next_move`
[INFO] [stderr]   --> src/lib.rs:96:5
[INFO] [stderr]    |
[INFO] [stderr] 96 |     next_move: Player,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Pos`
[INFO] [stderr]    --> src/lib.rs:102:8
[INFO] [stderr]     |
[INFO] [stderr] 102 | struct Pos;
[INFO] [stderr]     |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 81 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Pawn`
[INFO] [stderr]  --> src/lib.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     Pawn,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Knight`
[INFO] [stderr]  --> src/lib.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     Knight,
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Bishop`
[INFO] [stderr]  --> src/lib.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     Bishop,
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Rook`
[INFO] [stderr]  --> src/lib.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     Rook,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Queen`
[INFO] [stderr]  --> src/lib.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     Queen,
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `King`
[INFO] [stderr]  --> src/lib.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     King,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Black`
[INFO] [stderr]   --> src/lib.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     Black,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Piece`
[INFO] [stderr]   --> src/lib.rs:17:8
[INFO] [stderr]    |
[INFO] [stderr] 17 | struct Piece {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `A2`
[INFO] [stderr]   --> src/lib.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     A2,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `A3`
[INFO] [stderr]   --> src/lib.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     A3,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `A4`
[INFO] [stderr]   --> src/lib.rs:27:5
[INFO] [stderr]    |
[INFO] [stderr] 27 |     A4,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `A5`
[INFO] [stderr]   --> src/lib.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     A5,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `A6`
[INFO] [stderr]   --> src/lib.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     A6,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `A7`
[INFO] [stderr]   --> src/lib.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     A7,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `A8`
[INFO] [stderr]   --> src/lib.rs:31:5
[INFO] [stderr]    |
[INFO] [stderr] 31 |     A8,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `B1`
[INFO] [stderr]   --> src/lib.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 |     B1,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `B2`
[INFO] [stderr]   --> src/lib.rs:33:5
[INFO] [stderr]    |
[INFO] [stderr] 33 |     B2,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `B3`
[INFO] [stderr]   --> src/lib.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     B3,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `B4`
[INFO] [stderr]   --> src/lib.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 |     B4,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `B5`
[INFO] [stderr]   --> src/lib.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     B5,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `B6`
[INFO] [stderr]   --> src/lib.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     B6,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `B7`
[INFO] [stderr]   --> src/lib.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 38 |     B7,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `B8`
[INFO] [stderr]   --> src/lib.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     B8,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `C1`
[INFO] [stderr]   --> src/lib.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 |     C1,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `C2`
[INFO] [stderr]   --> src/lib.rs:41:5
[INFO] [stderr]    |
[INFO] [stderr] 41 |     C2,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `C3`
[INFO] [stderr]   --> src/lib.rs:42:5
[INFO] [stderr]    |
[INFO] [stderr] 42 |     C3,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `C4`
[INFO] [stderr]   --> src/lib.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 |     C4,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `C5`
[INFO] [stderr]   --> src/lib.rs:44:5
[INFO] [stderr]    |
[INFO] [stderr] 44 |     C5,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `C6`
[INFO] [stderr]   --> src/lib.rs:45:5
[INFO] [stderr]    |
[INFO] [stderr] 45 |     C6,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `C7`
[INFO] [stderr]   --> src/lib.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 |     C7,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `C8`
[INFO] [stderr]   --> src/lib.rs:47:5
[INFO] [stderr]    |
[INFO] [stderr] 47 |     C8,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `D1`
[INFO] [stderr]   --> src/lib.rs:48:5
[INFO] [stderr]    |
[INFO] [stderr] 48 |     D1,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `D2`
[INFO] [stderr]   --> src/lib.rs:49:5
[INFO] [stderr]    |
[INFO] [stderr] 49 |     D2,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `D3`
[INFO] [stderr]   --> src/lib.rs:50:5
[INFO] [stderr]    |
[INFO] [stderr] 50 |     D3,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `D4`
[INFO] [stderr]   --> src/lib.rs:51:5
[INFO] [stderr]    |
[INFO] [stderr] 51 |     D4,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `D5`
[INFO] [stderr]   --> src/lib.rs:52:5
[INFO] [stderr]    |
[INFO] [stderr] 52 |     D5,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `D6`
[INFO] [stderr]   --> src/lib.rs:53:5
[INFO] [stderr]    |
[INFO] [stderr] 53 |     D6,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `D7`
[INFO] [stderr]   --> src/lib.rs:54:5
[INFO] [stderr]    |
[INFO] [stderr] 54 |     D7,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `D8`
[INFO] [stderr]   --> src/lib.rs:55:5
[INFO] [stderr]    |
[INFO] [stderr] 55 |     D8,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `E1`
[INFO] [stderr]   --> src/lib.rs:56:5
[INFO] [stderr]    |
[INFO] [stderr] 56 |     E1,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `E2`
[INFO] [stderr]   --> src/lib.rs:57:5
[INFO] [stderr]    |
[INFO] [stderr] 57 |     E2,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `E3`
[INFO] [stderr]   --> src/lib.rs:58:5
[INFO] [stderr]    |
[INFO] [stderr] 58 |     E3,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `E4`
[INFO] [stderr]   --> src/lib.rs:59:5
[INFO] [stderr]    |
[INFO] [stderr] 59 |     E4,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `E5`
[INFO] [stderr]   --> src/lib.rs:60:5
[INFO] [stderr]    |
[INFO] [stderr] 60 |     E5,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `E6`
[INFO] [stderr]   --> src/lib.rs:61:5
[INFO] [stderr]    |
[INFO] [stderr] 61 |     E6,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `E7`
[INFO] [stderr]   --> src/lib.rs:62:5
[INFO] [stderr]    |
[INFO] [stderr] 62 |     E7,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `E8`
[INFO] [stderr]   --> src/lib.rs:63:5
[INFO] [stderr]    |
[INFO] [stderr] 63 |     E8,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `F1`
[INFO] [stderr]   --> src/lib.rs:64:5
[INFO] [stderr]    |
[INFO] [stderr] 64 |     F1,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `F2`
[INFO] [stderr]   --> src/lib.rs:65:5
[INFO] [stderr]    |
[INFO] [stderr] 65 |     F2,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `F3`
[INFO] [stderr]   --> src/lib.rs:66:5
[INFO] [stderr]    |
[INFO] [stderr] 66 |     F3,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `F4`
[INFO] [stderr]   --> src/lib.rs:67:5
[INFO] [stderr]    |
[INFO] [stderr] 67 |     F4,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `F5`
[INFO] [stderr]   --> src/lib.rs:68:5
[INFO] [stderr]    |
[INFO] [stderr] 68 |     F5,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `F6`
[INFO] [stderr]   --> src/lib.rs:69:5
[INFO] [stderr]    |
[INFO] [stderr] 69 |     F6,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `F7`
[INFO] [stderr]   --> src/lib.rs:70:5
[INFO] [stderr]    |
[INFO] [stderr] 70 |     F7,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `F8`
[INFO] [stderr]   --> src/lib.rs:71:5
[INFO] [stderr]    |
[INFO] [stderr] 71 |     F8,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `G1`
[INFO] [stderr]   --> src/lib.rs:72:5
[INFO] [stderr]    |
[INFO] [stderr] 72 |     G1,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `G2`
[INFO] [stderr]   --> src/lib.rs:73:5
[INFO] [stderr]    |
[INFO] [stderr] 73 |     G2,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `G3`
[INFO] [stderr]   --> src/lib.rs:74:5
[INFO] [stderr]    |
[INFO] [stderr] 74 |     G3,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `G4`
[INFO] [stderr]   --> src/lib.rs:75:5
[INFO] [stderr]    |
[INFO] [stderr] 75 |     G4,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `G5`
[INFO] [stderr]   --> src/lib.rs:76:5
[INFO] [stderr]    |
[INFO] [stderr] 76 |     G5,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `G6`
[INFO] [stderr]   --> src/lib.rs:77:5
[INFO] [stderr]    |
[INFO] [stderr] 77 |     G6,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `G7`
[INFO] [stderr]   --> src/lib.rs:78:5
[INFO] [stderr]    |
[INFO] [stderr] 78 |     G7,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `G8`
[INFO] [stderr]   --> src/lib.rs:79:5
[INFO] [stderr]    |
[INFO] [stderr] 79 |     G8,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `H1`
[INFO] [stderr]   --> src/lib.rs:80:5
[INFO] [stderr]    |
[INFO] [stderr] 80 |     H1,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `H2`
[INFO] [stderr]   --> src/lib.rs:81:5
[INFO] [stderr]    |
[INFO] [stderr] 81 |     H2,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `H3`
[INFO] [stderr]   --> src/lib.rs:82:5
[INFO] [stderr]    |
[INFO] [stderr] 82 |     H3,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `H4`
[INFO] [stderr]   --> src/lib.rs:83:5
[INFO] [stderr]    |
[INFO] [stderr] 83 |     H4,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `H5`
[INFO] [stderr]   --> src/lib.rs:84:5
[INFO] [stderr]    |
[INFO] [stderr] 84 |     H5,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `H6`
[INFO] [stderr]   --> src/lib.rs:85:5
[INFO] [stderr]    |
[INFO] [stderr] 85 |     H6,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `H7`
[INFO] [stderr]   --> src/lib.rs:86:5
[INFO] [stderr]    |
[INFO] [stderr] 86 |     H7,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `H8`
[INFO] [stderr]   --> src/lib.rs:87:5
[INFO] [stderr]    |
[INFO] [stderr] 87 |     H8,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `coordinates`
[INFO] [stderr]   --> src/lib.rs:91:5
[INFO] [stderr]    |
[INFO] [stderr] 91 |     coordinates: Coordinates,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `squares`
[INFO] [stderr]   --> src/lib.rs:95:5
[INFO] [stderr]    |
[INFO] [stderr] 95 |     squares: Vec<Square>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Pos`
[INFO] [stderr]    --> src/lib.rs:102:8
[INFO] [stderr]     |
[INFO] [stderr] 102 | struct Pos;
[INFO] [stderr]     |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 80 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.35s
[INFO] running `"docker" "inspect" "768a14e9213e6198e871ccefc9514863651af8376e4229770a7ca95913695dc7"`
[INFO] running `"docker" "rm" "-f" "768a14e9213e6198e871ccefc9514863651af8376e4229770a7ca95913695dc7"`
[INFO] [stdout] 768a14e9213e6198e871ccefc9514863651af8376e4229770a7ca95913695dc7