[INFO] cloning repository https://github.com/OwaisShaikh1/checkers_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/OwaisShaikh1/checkers_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOwaisShaikh1%2Fcheckers_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOwaisShaikh1%2Fcheckers_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 95308983daec5dad03ed8cd1294bc61f7f13c227
[INFO] checking OwaisShaikh1/checkers_rust against 79c0559184f27f4433a6fbc260b950d06d4a4889 for pr-162233-crater-rollup
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOwaisShaikh1%2Fcheckers_rust" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-6-tc2/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/OwaisShaikh1/checkers_rust
[INFO] finished tweaking git repo https://github.com/OwaisShaikh1/checkers_rust
[INFO] tweaked toml for git repo https://github.com/OwaisShaikh1/checkers_rust written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/OwaisShaikh1/checkers_rust on toolchain 79c0559184f27f4433a6fbc260b950d06d4a4889
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+79c0559184f27f4433a6fbc260b950d06d4a4889" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/OwaisShaikh1/checkers_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+79c0559184f27f4433a6fbc260b950d06d4a4889" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: binary `checkers_rust` should have a kebab-case name
[INFO] [stderr]    |
[INFO] [stderr]  1 | /workspace/builds/worker-6-tc2/source/target/.../checkers_rust
[INFO] [stderr]    |                                                  ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::non_kebab_case_bins` is set to `warn` by default
[INFO] [stderr] help: to change the binary name to `checkers-rust`, convert `package.name`
[INFO] [stderr]   --> Cargo.toml:7:8
[INFO] [stderr]    |
[INFO] [stderr]  7 - name = "checkers_rust"
[INFO] [stderr]  7 + name = "checkers-rust"
[INFO] [stderr]    |
[INFO] [stderr] help: to change the binary name to `checkers-rust`, specify `bin.name`
[INFO] [stderr]   --> Cargo.toml:8:19
[INFO] [stderr]    |
[INFO] [stderr]  8 ~ version = "0.1.0"
[INFO] [stderr]  9 + [[bin]]
[INFO] [stderr] 10 + name = "checkers-rust"
[INFO] [stderr] 11 + path = "src/main.rs"
[INFO] [stderr]    |
[INFO] [stderr] warning: `checkers_rust` (manifest) generated 1 warning
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 58d1b1fc6a3251fab1058d8a5c0dd2d1817fb92122a867220333f5a62e7ebd27
[INFO] running `Command { std: "docker" "start" "58d1b1fc6a3251fab1058d8a5c0dd2d1817fb92122a867220333f5a62e7ebd27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "58d1b1fc6a3251fab1058d8a5c0dd2d1817fb92122a867220333f5a62e7ebd27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "58d1b1fc6a3251fab1058d8a5c0dd2d1817fb92122a867220333f5a62e7ebd27" "/opt/rustwide/cargo-home/bin/cargo" "+79c0559184f27f4433a6fbc260b950d06d4a4889" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "58d1b1fc6a3251fab1058d8a5c0dd2d1817fb92122a867220333f5a62e7ebd27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "58d1b1fc6a3251fab1058d8a5c0dd2d1817fb92122a867220333f5a62e7ebd27" "/opt/rustwide/cargo-home/bin/cargo" "+79c0559184f27f4433a6fbc260b950d06d4a4889" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] warning: binary `checkers_rust` should have a kebab-case name
[INFO] [stderr]    |
[INFO] [stderr]  1 | /opt/rustwide/target/.../checkers_rust
[INFO] [stderr]    |                          ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::non_kebab_case_bins` is set to `warn` by default
[INFO] [stderr] help: to change the binary name to `checkers-rust`, convert `package.name`
[INFO] [stderr]   --> Cargo.toml:7:8
[INFO] [stderr]    |
[INFO] [stderr]  7 - name = "checkers_rust"
[INFO] [stderr]  7 + name = "checkers-rust"
[INFO] [stderr]    |
[INFO] [stderr] help: to change the binary name to `checkers-rust`, specify `bin.name`
[INFO] [stderr]   --> Cargo.toml:8:19
[INFO] [stderr]    |
[INFO] [stderr]  8 ~ version = "0.1.0"
[INFO] [stderr]  9 + [[bin]]
[INFO] [stderr] 10 + name = "checkers-rust"
[INFO] [stderr] 11 + path = "src/main.rs"
[INFO] [stderr]    |
[INFO] [stderr] warning: `checkers_rust` (manifest) generated 1 warning
[INFO] [stderr]     Checking bitflags v2.12.1
[INFO] [stderr]     Checking log v0.4.32
[INFO] [stderr]    Compiling rustix v1.1.4
[INFO] [stderr]    Compiling memchr v2.8.1
[INFO] [stderr]    Compiling quote v1.0.45
[INFO] [stderr]    Compiling wayland-sys v0.31.11
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling cc v1.2.63
[INFO] [stderr]    Compiling proc-macro-crate v3.5.0
[INFO] [stderr]    Compiling khronos_api v3.1.0
[INFO] [stderr]    Compiling zerocopy v0.8.50
[INFO] [stderr]     Checking uuid v1.23.2
[INFO] [stderr]    Compiling xml-rs v0.8.28
[INFO] [stderr]     Checking rustix v0.38.44
[INFO] [stderr]     Checking syn v2.0.117
[INFO] [stderr]     Checking getrandom v0.3.4
[INFO] [stderr]    Compiling x11-dl v2.21.0
[INFO] [stderr]     Checking parking_lot_core v0.9.12
[INFO] [stderr]     Checking hashbrown v0.15.5
[INFO] [stderr]    Compiling winit v0.30.13
[INFO] [stderr]     Checking fdeflate v0.3.7
[INFO] [stderr]     Checking xkbcommon-dl v0.4.2
[INFO] [stderr]     Checking concurrent-queue v2.5.0
[INFO] [stderr]     Checking profiling v1.0.18
[INFO] [stderr]    Compiling gl_generator v0.14.0
[INFO] [stderr]     Checking epaint_default_fonts v0.33.3
[INFO] [stderr]     Checking pxfm v0.1.29
[INFO] [stderr]     Checking parking_lot v0.12.5
[INFO] [stderr]     Checking event-listener v5.4.1
[INFO] [stderr]     Checking async-executor v1.14.0
[INFO] [stderr]     Checking dpi v0.1.2
[INFO] [stderr]     Checking event-listener-strategy v0.5.4
[INFO] [stderr]     Checking png v0.18.1
[INFO] [stderr]    Compiling glutin v0.32.3
[INFO] [stderr]     Checking async-channel v2.5.0
[INFO] [stderr]     Checking async-lock v3.4.2
[INFO] [stderr]     Checking blocking v1.6.2
[INFO] [stderr]     Checking async-broadcast v0.7.2
[INFO] [stderr]    Compiling glutin_egl_sys v0.7.1
[INFO] [stderr]     Checking accesskit_consumer v0.31.0
[INFO] [stderr]    Compiling glutin_glx_sys v0.6.1
[INFO] [stderr]    Compiling memoffset v0.9.1
[INFO] [stderr]    Compiling glutin-winit v0.5.0
[INFO] [stderr]     Checking glow v0.16.0
[INFO] [stderr]    Compiling wayland-backend v0.3.15
[INFO] [stderr]     Checking moxcms v0.8.1
[INFO] [stderr]     Checking polling v3.11.0
[INFO] [stderr]     Checking gethostname v1.1.0
[INFO] [stderr]     Checking x11rb v0.13.2
[INFO] [stderr]     Checking async-io v2.6.0
[INFO] [stderr]    Compiling synstructure v0.13.2
[INFO] [stderr]     Checking wayland-csd-frame v0.3.0
[INFO] [stderr]     Checking async-signal v0.2.14
[INFO] [stderr]     Checking async-process v2.5.0
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling enumflags2_derive v0.7.12
[INFO] [stderr]    Compiling zerofrom-derive v0.1.7
[INFO] [stderr]    Compiling tracing-attributes v0.1.31
[INFO] [stderr]    Compiling bytemuck_derive v1.10.2
[INFO] [stderr]    Compiling yoke-derive v0.8.2
[INFO] [stderr]    Compiling zerovec-derive v0.11.3
[INFO] [stderr]    Compiling displaydoc v0.2.6
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling async-trait v0.1.89
[INFO] [stderr]    Compiling serde_repr v0.1.20
[INFO] [stderr]    Compiling async-recursion v1.1.1
[INFO] [stderr]    Compiling thiserror-impl v2.0.18
[INFO] [stderr]    Compiling futures-macro v0.3.32
[INFO] [stderr]     Checking zerofrom v0.1.8
[INFO] [stderr]     Checking yoke v0.8.3
[INFO] [stderr]     Checking ahash v0.8.12
[INFO] [stderr]     Checking zerotrie v0.2.4
[INFO] [stderr]     Checking tracing v0.1.44
[INFO] [stderr]     Checking thiserror v1.0.69
[INFO] [stderr]     Checking futures-util v0.3.32
[INFO] [stderr]     Checking zerovec v0.11.6
[INFO] [stderr]     Checking calloop v0.13.0
[INFO] [stderr]     Checking bytemuck v1.25.0
[INFO] [stderr]     Checking calloop v0.14.4
[INFO] [stderr]     Checking thiserror v2.0.18
[INFO] [stderr]     Checking tiny-skia-path v0.11.4
[INFO] [stderr]     Checking emath v0.33.3
[INFO] [stderr]     Checking ecolor v0.33.3
[INFO] [stderr]     Checking tiny-skia v0.11.4
[INFO] [stderr]     Checking tinystr v0.8.3
[INFO] [stderr]     Checking potential_utf v0.1.5
[INFO] [stderr]     Checking epaint v0.33.3
[INFO] [stderr]     Checking icu_collections v2.2.0
[INFO] [stderr]     Checking image v0.25.10
[INFO] [stderr]     Checking icu_locale_core v2.2.0
[INFO] [stderr]     Checking egui v0.33.3
[INFO] [stderr]     Checking icu_provider v2.2.0
[INFO] [stderr]     Checking icu_properties v2.2.0
[INFO] [stderr]     Checking icu_normalizer v2.2.0
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]     Checking arboard v3.6.1
[INFO] [stderr]     Checking zvariant_utils v3.4.0
[INFO] [stderr]     Checking enumflags2 v0.7.12
[INFO] [stderr]     Checking quick-xml v0.39.4
[INFO] [stderr]     Checking idna_adapter v1.2.2
[INFO] [stderr]     Checking idna v1.1.0
[INFO] [stderr]    Compiling zvariant_derive v5.12.0
[INFO] [stderr]     Checking url v2.5.8
[INFO] [stderr]     Checking webbrowser v1.2.1
[INFO] [stderr]    Compiling zvariant v5.12.0
[INFO] [stderr]    Compiling wayland-scanner v0.31.10
[INFO] [stderr]     Checking wayland-client v0.31.14
[INFO] [stderr]     Checking egui_glow v0.33.3
[INFO] [stderr]     Checking zbus_names v4.3.2
[INFO] [stderr]     Checking wayland-protocols v0.32.12
[INFO] [stderr]     Checking wayland-cursor v0.31.14
[INFO] [stderr]     Checking calloop-wayland-source v0.3.0
[INFO] [stderr]     Checking calloop-wayland-source v0.4.1
[INFO] [stderr]     Checking zbus_xml v5.1.1
[INFO] [stderr]     Checking zbus-lockstep v0.5.2
[INFO] [stderr]    Compiling zbus_macros v5.16.0
[INFO] [stderr]    Compiling zbus-lockstep-macros v0.5.2
[INFO] [stderr]     Checking zbus v5.16.0
[INFO] [stderr]     Checking wayland-protocols-wlr v0.3.12
[INFO] [stderr]     Checking wayland-protocols-plasma v0.3.12
[INFO] [stderr]     Checking wayland-protocols-misc v0.3.12
[INFO] [stderr]     Checking wayland-protocols-experimental v20250721.0.1
[INFO] [stderr]     Checking smithay-client-toolkit v0.19.2
[INFO] [stderr]     Checking smithay-client-toolkit v0.20.0
[INFO] [stderr]     Checking smithay-clipboard v0.7.3
[INFO] [stderr]     Checking sctk-adwaita v0.10.1
[INFO] [stderr]     Checking atspi-common v0.9.0
[INFO] [stderr]     Checking atspi-proxies v0.9.0
[INFO] [stderr]     Checking accesskit_atspi_common v0.14.2
[INFO] [stderr]     Checking atspi-connection v0.9.0
[INFO] [stderr]     Checking atspi v0.25.0
[INFO] [stderr]     Checking accesskit_unix v0.17.2
[INFO] [stderr]     Checking accesskit_winit v0.29.2
[INFO] [stderr]     Checking egui-winit v0.33.3
[INFO] [stderr]     Checking eframe v0.33.3
[INFO] [stderr]     Checking checkers_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: falling back to `f32` as the trait bound `f32: From<f64>` is not satisfied
[INFO] [stdout]    --> src/main.rs:172:41
[INFO] [stdout]     |
[INFO] [stdout] 172 | ...                   2.0,
[INFO] [stdout]     |                       ^^^ help: explicitly specify the type as `f32`: `2.0_f32`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #154024 <https://github.com/rust-lang/rust/issues/154024>
[INFO] [stdout]     = note: `#[warn(float_literal_f32_fallback)]` (part of `#[warn(future_incompatible)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: falling back to `f32` as the trait bound `f32: From<f64>` is not satisfied
[INFO] [stdout]    --> src/main.rs:190:41
[INFO] [stdout]     |
[INFO] [stdout] 190 | ...                   3.0,
[INFO] [stdout]     |                       ^^^ help: explicitly specify the type as `f32`: `3.0_f32`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #154024 <https://github.com/rust-lang/rust/issues/154024>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: falling back to `f32` as the trait bound `f32: From<f64>` is not satisfied
[INFO] [stdout]    --> src/main.rs:208:41
[INFO] [stdout]     |
[INFO] [stdout] 208 | ...                   2.0,
[INFO] [stdout]     |                       ^^^ help: explicitly specify the type as `f32`: `2.0_f32`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #154024 <https://github.com/rust-lang/rust/issues/154024>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: falling back to `f32` as the trait bound `f32: From<f64>` is not satisfied
[INFO] [stdout]    --> src/main.rs:217:41
[INFO] [stdout]     |
[INFO] [stdout] 217 | ...                   3.0,
[INFO] [stdout]     |                       ^^^ help: explicitly specify the type as `f32`: `3.0_f32`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #154024 <https://github.com/rust-lang/rust/issues/154024>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: falling back to `f32` as the trait bound `f32: From<f64>` is not satisfied
[INFO] [stdout]    --> src/main.rs:172:41
[INFO] [stdout]     |
[INFO] [stdout] 172 | ...                   2.0,
[INFO] [stdout]     |                       ^^^ help: explicitly specify the type as `f32`: `2.0_f32`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #154024 <https://github.com/rust-lang/rust/issues/154024>
[INFO] [stdout]     = note: `#[warn(float_literal_f32_fallback)]` (part of `#[warn(future_incompatible)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: falling back to `f32` as the trait bound `f32: From<f64>` is not satisfied
[INFO] [stdout]    --> src/main.rs:190:41
[INFO] [stdout]     |
[INFO] [stdout] 190 | ...                   3.0,
[INFO] [stdout]     |                       ^^^ help: explicitly specify the type as `f32`: `3.0_f32`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #154024 <https://github.com/rust-lang/rust/issues/154024>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: falling back to `f32` as the trait bound `f32: From<f64>` is not satisfied
[INFO] [stdout]    --> src/main.rs:208:41
[INFO] [stdout]     |
[INFO] [stdout] 208 | ...                   2.0,
[INFO] [stdout]     |                       ^^^ help: explicitly specify the type as `f32`: `2.0_f32`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #154024 <https://github.com/rust-lang/rust/issues/154024>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: falling back to `f32` as the trait bound `f32: From<f64>` is not satisfied
[INFO] [stdout]    --> src/main.rs:217:41
[INFO] [stdout]     |
[INFO] [stdout] 217 | ...                   3.0,
[INFO] [stdout]     |                       ^^^ help: explicitly specify the type as `f32`: `3.0_f32`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #154024 <https://github.com/rust-lang/rust/issues/154024>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `piece_text` is never used
[INFO] [stdout]   --> src/main.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | impl CheckersApp {
[INFO] [stdout]    | ---------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 35 |     fn piece_text(&self, sq: usize) -> &'static str {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `is_king`, `is_black`, and `printboard` are never used
[INFO] [stdout]    --> src/base/board.rs:84:22
[INFO] [stdout]     |
[INFO] [stdout]  26 | impl Board {
[INFO] [stdout]     | ---------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  84 |     #[inline] pub fn is_king  (&self, sq: usize) -> bool { self.get(sq) & KING   != 0 }
[INFO] [stdout]     |                      ^^^^^^^
[INFO] [stdout]  85 |     #[inline] pub fn is_white (&self, sq: usize) -> bool { self.get(sq) & WHITE  != 0 }
[INFO] [stdout]  86 |     #[inline] pub fn is_black (&self, sq: usize) -> bool {
[INFO] [stdout]     |                      ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 323 |     pub fn printboard(&self) {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `piece_text` is never used
[INFO] [stdout]   --> src/main.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | impl CheckersApp {
[INFO] [stdout]    | ---------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 35 |     fn piece_text(&self, sq: usize) -> &'static str {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `is_king`, `is_black`, and `printboard` are never used
[INFO] [stdout]    --> src/base/board.rs:84:22
[INFO] [stdout]     |
[INFO] [stdout]  26 | impl Board {
[INFO] [stdout]     | ---------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  84 |     #[inline] pub fn is_king  (&self, sq: usize) -> bool { self.get(sq) & KING   != 0 }
[INFO] [stdout]     |                      ^^^^^^^
[INFO] [stdout]  85 |     #[inline] pub fn is_white (&self, sq: usize) -> bool { self.get(sq) & WHITE  != 0 }
[INFO] [stdout]  86 |     #[inline] pub fn is_black (&self, sq: usize) -> bool {
[INFO] [stdout]     |                      ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 323 |     pub fn printboard(&self) {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 10s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: glutin v0.32.3, glutin-winit v0.5.0, winit v0.30.13
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 6`
[INFO] running `Command { std: "docker" "inspect" "58d1b1fc6a3251fab1058d8a5c0dd2d1817fb92122a867220333f5a62e7ebd27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58d1b1fc6a3251fab1058d8a5c0dd2d1817fb92122a867220333f5a62e7ebd27", kill_on_drop: false }`
[INFO] [stdout] 58d1b1fc6a3251fab1058d8a5c0dd2d1817fb92122a867220333f5a62e7ebd27
