[INFO] cloning repository https://github.com/sivertjoe/Future-chess
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sivertjoe/Future-chess" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsivertjoe%2FFuture-chess", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsivertjoe%2FFuture-chess'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 369d2cc1e6a7dd3d07315fa947ea9ac852ccca9b
[INFO] building sivertjoe/Future-chess against master#881c1ac408d93bb7adaa3a51dabab9266e82eee8 for issue-85264
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsivertjoe%2FFuture-chess" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sivertjoe/Future-chess on toolchain 881c1ac408d93bb7adaa3a51dabab9266e82eee8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sivertjoe/Future-chess
[INFO] finished tweaking git repo https://github.com/sivertjoe/Future-chess
[INFO] tweaked toml for git repo https://github.com/sivertjoe/Future-chess written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/sivertjoe/Future-chess already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded memchr v2.1.2
[INFO] [stderr]   Downloaded num-bigint v0.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6a4b6a0b122949b0b14d4d217db9af2e43a1ad0d5a1c3d9658448cc708dbf89a
[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" "6a4b6a0b122949b0b14d4d217db9af2e43a1ad0d5a1c3d9658448cc708dbf89a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6a4b6a0b122949b0b14d4d217db9af2e43a1ad0d5a1c3d9658448cc708dbf89a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a4b6a0b122949b0b14d4d217db9af2e43a1ad0d5a1c3d9658448cc708dbf89a", kill_on_drop: false }`
[INFO] [stdout] 6a4b6a0b122949b0b14d4d217db9af2e43a1ad0d5a1c3d9658448cc708dbf89a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 52e4b70b3414a817e871038bc37ca73cd88e54c30a3a8d9c1ad3fd7064c90d51
[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" "52e4b70b3414a817e871038bc37ca73cd88e54c30a3a8d9c1ad3fd7064c90d51", kill_on_drop: false }`
[INFO] [stderr]    Compiling sfml-build v0.2.0
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling libc v0.2.45
[INFO] [stderr]    Compiling num-bigint v0.2.1
[INFO] [stderr]    Compiling bitflags v1.0.4
[INFO] [stderr]    Compiling futures v0.1.25
[INFO] [stderr]    Compiling memchr v2.1.2
[INFO] [stderr]    Compiling num-complex v0.2.1
[INFO] [stderr]    Compiling csfml-system-sys v0.4.0
[INFO] [stderr]    Compiling csfml-window-sys v0.4.0
[INFO] [stderr]    Compiling csfml-audio-sys v0.4.0
[INFO] [stderr]    Compiling csfml-graphics-sys v0.4.0
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stderr]    Compiling sfml v0.14.0
[INFO] [stderr]    Compiling aho-corasick v0.6.9
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]    Compiling num-rational v0.2.1
[INFO] [stderr]    Compiling num v0.2.0
[INFO] [stderr]    Compiling chess_v2 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/pieces.rs:22:19
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub rule: Box<ChessPiece>,
[INFO] [stdout]    |                   ^^^^^^^^^^ help: use `dyn`: `dyn ChessPiece`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/pieces.rs:26:25
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn new(typ: Box<ChessPiece>, color: Color) -> Piece<'a> 
[INFO] [stdout]    |                         ^^^^^^^^^^ help: use `dyn`: `dyn ChessPiece`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/pieces.rs:91:25
[INFO] [stdout]    |
[INFO] [stdout] 91 |     pub fn new() -> Box<ChessPiece> 
[INFO] [stdout]    |                         ^^^^^^^^^^ help: use `dyn`: `dyn ChessPiece`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/pieces.rs:121:25
[INFO] [stdout]     |
[INFO] [stdout] 121 |     pub fn new() -> Box<ChessPiece> 
[INFO] [stdout]     |                         ^^^^^^^^^^ help: use `dyn`: `dyn ChessPiece`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/pieces.rs:150:25
[INFO] [stdout]     |
[INFO] [stdout] 150 |     pub fn new() -> Box<ChessPiece> 
[INFO] [stdout]     |                         ^^^^^^^^^^ help: use `dyn`: `dyn ChessPiece`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/pieces.rs:180:25
[INFO] [stdout]     |
[INFO] [stdout] 180 |     pub fn new() -> Box<ChessPiece> 
[INFO] [stdout]     |                         ^^^^^^^^^^ help: use `dyn`: `dyn ChessPiece`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/pieces.rs:209:25
[INFO] [stdout]     |
[INFO] [stdout] 209 |     pub fn new() -> Box<ChessPiece> 
[INFO] [stdout]     |                         ^^^^^^^^^^ help: use `dyn`: `dyn ChessPiece`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/pieces.rs:238:25
[INFO] [stdout]     |
[INFO] [stdout] 238 |     pub fn new() -> Box<ChessPiece> 
[INFO] [stdout]     |                         ^^^^^^^^^^ help: use `dyn`: `dyn ChessPiece`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/new_piece_creator.rs:21:37
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub fn m_create_kings<'a>(set: &mut ChessSet)
[INFO] [stdout]    |                                     ^^^^^^^^ help: use `dyn`: `dyn ChessSet`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/new_piece_creator.rs:27:36
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub fn p_create_king<'a>(set: &mut ChessSet, text: _Index<Color>)
[INFO] [stdout]    |                                    ^^^^^^^^ help: use `dyn`: `dyn ChessSet`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/new_piece_creator.rs:36:34
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub fn m_create_queens(set: &mut ChessSet)
[INFO] [stdout]    |                                  ^^^^^^^^ help: use `dyn`: `dyn ChessSet`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/new_piece_creator.rs:42:33
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub fn p_create_queen(set: &mut ChessSet, text: _Index<Color>)
[INFO] [stdout]    |                                 ^^^^^^^^ help: use `dyn`: `dyn ChessSet`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/new_piece_creator.rs:51:33
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub fn m_create_pawns(set: &mut ChessSet)
[INFO] [stdout]    |                                 ^^^^^^^^ help: use `dyn`: `dyn ChessSet`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/new_piece_creator.rs:57:29
[INFO] [stdout]    |
[INFO] [stdout] 57 | fn p_create_pawns(set: &mut ChessSet, color: Color)
[INFO] [stdout]    |                             ^^^^^^^^ help: use `dyn`: `dyn ChessSet`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/new_piece_creator.rs:72:34
[INFO] [stdout]    |
[INFO] [stdout] 72 | pub fn m_create_bishop(set: &mut ChessSet)
[INFO] [stdout]    |                                  ^^^^^^^^ help: use `dyn`: `dyn ChessSet`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/new_piece_creator.rs:79:33
[INFO] [stdout]    |
[INFO] [stdout] 79 | pub fn m_create_rooks(set: &mut ChessSet)
[INFO] [stdout]    |                                 ^^^^^^^^ help: use `dyn`: `dyn ChessSet`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/new_piece_creator.rs:87:35
[INFO] [stdout]    |
[INFO] [stdout] 87 | pub fn m_create_knights(set: &mut ChessSet)
[INFO] [stdout]    |                                   ^^^^^^^^ help: use `dyn`: `dyn ChessSet`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/new_piece_creator.rs:96:15
[INFO] [stdout]    |
[INFO] [stdout] 96 |     set: &mut ChessSet,
[INFO] [stdout]    |               ^^^^^^^^ help: use `dyn`: `dyn ChessSet`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/new_piece_creator.rs:99:19
[INFO] [stdout]    |
[INFO] [stdout] 99 |     create_func: &Fn() -> Box<ChessPiece>)
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn() -> Box<ChessPiece>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/new_piece_creator.rs:99:31
[INFO] [stdout]    |
[INFO] [stdout] 99 |     create_func: &Fn() -> Box<ChessPiece>)
[INFO] [stdout]    |                               ^^^^^^^^^^ help: use `dyn`: `dyn ChessPiece`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/new_piece_creator.rs:108:15
[INFO] [stdout]     |
[INFO] [stdout] 108 |     set: &mut ChessSet, 
[INFO] [stdout]     |               ^^^^^^^^ help: use `dyn`: `dyn ChessSet`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/new_piece_creator.rs:111:19
[INFO] [stdout]     |
[INFO] [stdout] 111 |     create_func: &Fn() -> Box<ChessPiece>
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn() -> Box<ChessPiece>`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/new_piece_creator.rs:111:31
[INFO] [stdout]     |
[INFO] [stdout] 111 |     create_func: &Fn() -> Box<ChessPiece>
[INFO] [stdout]     |                               ^^^^^^^^^^ help: use `dyn`: `dyn ChessPiece`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/new_piece_creator.rs:123:29
[INFO] [stdout]     |
[INFO] [stdout] 123 | fn _create_piece<'a>(p: Box<ChessPiece>, color: Color) -> FutureResult<Piece<'a>, ()>
[INFO] [stdout]     |                             ^^^^^^^^^^ help: use `dyn`: `dyn ChessPiece`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/mov_functions/rook.rs:71:28
[INFO] [stdout]    |
[INFO] [stdout] 71 |     return future::err(());;
[INFO] [stdout]    |                            ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/highlight.rs:41:22
[INFO] [stdout]    |
[INFO] [stdout] 41 |         target: &mut sfml::graphics::RenderTarget,
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn sfml::graphics::RenderTarget`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/arrow.rs:94:22
[INFO] [stdout]    |
[INFO] [stdout] 94 |         target: &mut sfml::graphics::RenderTarget,
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn sfml::graphics::RenderTarget`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/chess_set.rs:12:25
[INFO] [stdout]    |
[INFO] [stdout] 12 |     fn place(&mut self, Piece<'a>, Square);
[INFO] [stdout]    |                         ^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: Piece<'a>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2018 edition!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/chess_set.rs:12:36
[INFO] [stdout]    |
[INFO] [stdout] 12 |     fn place(&mut self, Piece<'a>, Square);
[INFO] [stdout]    |                                    ^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: Square`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2018 edition!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/chess_set.rs:15:26
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn record(&mut self, Move);
[INFO] [stdout]    |                          ^^^^ help: try naming the parameter or explicitly ignoring it: `_: Move`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2018 edition!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/chess_set.rs:16:19
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn get(&self, usize) -> Option<&Move>;
[INFO] [stdout]    |                   ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: usize`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2018 edition!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `remove_item` found for struct `Vec<Highlight<'a>>` in the current scope
[INFO] [stdout]   --> src/game.rs:87:40
[INFO] [stdout]    |
[INFO] [stdout] 87 |             if self.highlighed_squares.remove_item(&highlight).is_none()
[INFO] [stdout]    |                                        ^^^^^^^^^^^ method not found in `Vec<Highlight<'a>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `remove_item` found for struct `Vec<Arrow<'a>>` in the current scope
[INFO] [stdout]   --> src/game.rs:97:32
[INFO] [stdout]    |
[INFO] [stdout] 97 |                 if self.arrows.remove_item(&arrow).is_none()
[INFO] [stdout]    |                                ^^^^^^^^^^^ method not found in `Vec<Arrow<'a>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 31 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `chess_v2`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "52e4b70b3414a817e871038bc37ca73cd88e54c30a3a8d9c1ad3fd7064c90d51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52e4b70b3414a817e871038bc37ca73cd88e54c30a3a8d9c1ad3fd7064c90d51", kill_on_drop: false }`
[INFO] [stdout] 52e4b70b3414a817e871038bc37ca73cd88e54c30a3a8d9c1ad3fd7064c90d51
