[INFO] cloning repository https://github.com/vitvakatu/chess
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vitvakatu/chess" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvitvakatu%2Fchess", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvitvakatu%2Fchess'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b0a5bf3272ec559a9b79e3a6d19d9b66a7f3432f
[INFO] testing vitvakatu/chess against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvitvakatu%2Fchess" "/workspace/builds/worker-59/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-59/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vitvakatu/chess on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/vitvakatu/chess
[INFO] finished tweaking git repo https://github.com/vitvakatu/chess
[INFO] tweaked toml for git repo https://github.com/vitvakatu/chess written to /workspace/builds/worker-59/source/Cargo.toml
[INFO] crate git repo https://github.com/vitvakatu/chess already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded yew v0.19.3
[INFO] [stderr]   Downloaded gloo-file v0.2.1
[INFO] [stderr]   Downloaded gloo-utils v0.1.2
[INFO] [stderr]   Downloaded yew-macro v0.19.3
[INFO] [stderr]   Downloaded gloo v0.4.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-59/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-59/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e8d5c0cc473faaa85efca88198c0b95e3da663eeee4a866482ab60e913899222
[INFO] running `Command { std: "docker" "start" "-a" "e8d5c0cc473faaa85efca88198c0b95e3da663eeee4a866482ab60e913899222", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e8d5c0cc473faaa85efca88198c0b95e3da663eeee4a866482ab60e913899222", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8d5c0cc473faaa85efca88198c0b95e3da663eeee4a866482ab60e913899222", kill_on_drop: false }`
[INFO] [stdout] e8d5c0cc473faaa85efca88198c0b95e3da663eeee4a866482ab60e913899222
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-59/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-59/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 112032ad23188806d69d9dde580fc1f3637ad2335058a66c8631bedc6ee4d30e
[INFO] running `Command { std: "docker" "start" "-a" "112032ad23188806d69d9dde580fc1f3637ad2335058a66c8631bedc6ee4d30e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.79
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling bumpalo v3.9.1
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]    Compiling itoa v1.0.1
[INFO] [stderr]    Compiling ryu v1.0.9
[INFO] [stderr]    Compiling wasm-bindgen v0.2.79
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling matches v0.1.9
[INFO] [stderr]    Compiling percent-encoding v2.1.0
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling slab v0.4.5
[INFO] [stderr]    Compiling anymap2 v0.13.0
[INFO] [stderr]    Compiling boolinator v2.4.0
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling scoped-tls-hkt v0.1.2
[INFO] [stderr]    Compiling form_urlencoded v1.0.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.79
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.79
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling yew-macro v0.19.3
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.79
[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]    Compiling bincode v1.3.3
[INFO] [stderr]    Compiling serde_urlencoded v0.7.1
[INFO] [stderr]    Compiling js-sys v0.3.56
[INFO] [stderr]    Compiling console_error_panic_hook v0.1.7
[INFO] [stderr]    Compiling web-sys v0.3.56
[INFO] [stderr]    Compiling gloo-timers v0.2.3
[INFO] [stderr]    Compiling serde-wasm-bindgen v0.3.1
[INFO] [stderr]    Compiling wasm-bindgen-futures v0.4.29
[INFO] [stderr]    Compiling gloo-utils v0.1.2
[INFO] [stderr]    Compiling gloo-events v0.1.1
[INFO] [stderr]    Compiling gloo-console v0.2.1
[INFO] [stderr]    Compiling gloo-render v0.1.0
[INFO] [stderr]    Compiling gloo-dialogs v0.1.0
[INFO] [stderr]    Compiling gloo-file v0.2.1
[INFO] [stderr]    Compiling gloo-storage v0.2.0
[INFO] [stderr]    Compiling gloo-history v0.1.0
[INFO] [stderr]    Compiling gloo-worker v0.1.0
[INFO] [stderr]    Compiling gloo v0.4.2
[INFO] [stderr]    Compiling yew v0.19.3
[INFO] [stderr]    Compiling gloo v0.6.0
[INFO] [stderr]    Compiling chess v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `moves::PromotedTo`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use moves::PromotedTo;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `File`, `Pos`, `Rank`
[INFO] [stdout]  --> src/board/castling.rs:1:18
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::pos::{Pos, File, Rank};
[INFO] [stdout]   |                  ^^^  ^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::piece::PieceColor`
[INFO] [stdout]  --> src/board/castling.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::piece::PieceColor;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::board::BoardState`
[INFO] [stdout]  --> src/board/castling.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::board::BoardState;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::board::BoardState`
[INFO] [stdout]  --> src/move_list.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::board::BoardState;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::moves::san::Move`
[INFO] [stdout]  --> src/move_list.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::moves::san::Move;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::Msg`
[INFO] [stdout]  --> src/move_list.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::Msg;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::board::BoardState`
[INFO] [stdout]   --> src/main.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use crate::board::BoardState;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::board::GameResult`
[INFO] [stdout]   --> src/main.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | use crate::board::GameResult;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::board::Square`
[INFO] [stdout]   --> src/main.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | use crate::board::Square;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::moves::internal::Move`
[INFO] [stdout]   --> src/main.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | use crate::moves::internal::Move;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::moves::CastlingSide`
[INFO] [stdout]   --> src/main.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | use crate::moves::CastlingSide;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `PieceColor`, `PieceType`, `Piece`
[INFO] [stdout]   --> src/main.rs:24:20
[INFO] [stdout]    |
[INFO] [stdout] 24 | use crate::piece::{Piece, PieceColor, PieceType};
[INFO] [stdout]    |                    ^^^^^  ^^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `File`, `Rank`
[INFO] [stdout]   --> src/main.rs:25:18
[INFO] [stdout]    |
[INFO] [stdout] 25 | use crate::pos::{File, Pos, Rank};
[INFO] [stdout]    |                  ^^^^       ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ctx`
[INFO] [stdout]    --> src/board.rs:145:15
[INFO] [stdout]     |
[INFO] [stdout] 145 |     fn create(ctx: &Context<Self>) -> Self {
[INFO] [stdout]     |               ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `piece`
[INFO] [stdout]    --> src/board.rs:236:70
[INFO] [stdout]     |
[INFO] [stdout] 236 |         let active_piece_highlight = self.state.selected_piece.map(|(piece, pos)| {
[INFO] [stdout]     |                                                                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_piece`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]    --> src/pos.rs:269:24
[INFO] [stdout]     |
[INFO] [stdout] 269 |     pub fn left(&self, n: u8) -> Self {
[INFO] [stdout]     |                        ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]    --> src/pos.rs:273:25
[INFO] [stdout]     |
[INFO] [stdout] 273 |     pub fn right(&self, n: u8) -> Self {
[INFO] [stdout]     |                         ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pos`
[INFO] [stdout]    --> src/board/state.rs:221:58
[INFO] [stdout]     |
[INFO] [stdout] 221 |                         .filter(|(Piece { kind, color }, pos)| {
[INFO] [stdout]     |                                                          ^^^ help: if this is intentional, prefix it with an underscore: `_pos`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pos`
[INFO] [stdout]    --> src/board/state.rs:232:38
[INFO] [stdout]     |
[INFO] [stdout] 232 |                         .filter(|(m, pos)| m.to() == Some(to))
[INFO] [stdout]     |                                      ^^^ help: if this is intentional, prefix it with an underscore: `_pos`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pos`
[INFO] [stdout]    --> src/board/state.rs:251:54
[INFO] [stdout]     |
[INFO] [stdout] 251 |                     .filter(|(Piece { kind, color }, pos)| {
[INFO] [stdout]     |                                                      ^^^ help: if this is intentional, prefix it with an underscore: `_pos`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `FOOLS_MATE`
[INFO] [stdout]  --> src/fen.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub const FOOLS_MATE: &str = "rnbqkbnr/pppppppp/8/7Q/2B5/8/PPPP1PPP/RNB1K1NR";
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `TWO_KINGS`
[INFO] [stdout]  --> src/fen.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub const TWO_KINGS: &str = "4k3/8/8/8/8/8/8/3K4";
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `plies_since_last_non_repeatable_move`
[INFO] [stdout]   --> src/board/state.rs:73:12
[INFO] [stdout]    |
[INFO] [stdout] 73 |     pub fn plies_since_last_non_repeatable_move(&self) -> Ply {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `move_number`
[INFO] [stdout]   --> src/board/state.rs:77:12
[INFO] [stdout]    |
[INFO] [stdout] 77 |     pub fn move_number(&self) -> MoveNumber {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from`
[INFO] [stdout]   --> src/moves.rs:82:16
[INFO] [stdout]    |
[INFO] [stdout] 82 |         pub fn from(&self) -> Option<Pos> {
[INFO] [stdout]    |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(bool_to_option)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 26 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `chess` due to 2 previous errors; 26 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "112032ad23188806d69d9dde580fc1f3637ad2335058a66c8631bedc6ee4d30e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "112032ad23188806d69d9dde580fc1f3637ad2335058a66c8631bedc6ee4d30e", kill_on_drop: false }`
[INFO] [stdout] 112032ad23188806d69d9dde580fc1f3637ad2335058a66c8631bedc6ee4d30e