[INFO] cloning repository https://github.com/hxyulin/tictactoe-3d
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hxyulin/tictactoe-3d" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhxyulin%2Ftictactoe-3d", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhxyulin%2Ftictactoe-3d'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ca21c90c09b60016c82d500fcebf54b1aef5c0e0
[INFO] building hxyulin/tictactoe-3d against master#eb171a227f9e5de5d376b6edb56b174bc8235fb3 for pr-149937
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhxyulin%2Ftictactoe-3d" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/hxyulin/tictactoe-3d
[INFO] finished tweaking git repo https://github.com/hxyulin/tictactoe-3d
[INFO] tweaked toml for git repo https://github.com/hxyulin/tictactoe-3d written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/hxyulin/tictactoe-3d on toolchain eb171a227f9e5de5d376b6edb56b174bc8235fb3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+eb171a227f9e5de5d376b6edb56b174bc8235fb3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/hxyulin/tictactoe-3d 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" "+eb171a227f9e5de5d376b6edb56b174bc8235fb3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded glutin_egl_sys v0.7.1
[INFO] [stderr]   Downloaded glutin_glx_sys v0.6.1
[INFO] [stderr]   Downloaded libloading v0.8.7
[INFO] [stderr]   Downloaded egui-wgpu v0.31.1
[INFO] [stderr]   Downloaded egui_glow v0.31.1
[INFO] [stderr]   Downloaded accesskit_unix v0.13.1
[INFO] [stderr]   Downloaded accesskit_atspi_common v0.10.1
[INFO] [stderr]   Downloaded arboard v3.5.0
[INFO] [stderr]   Downloaded webbrowser v1.0.4
[INFO] [stderr]   Downloaded epaint v0.31.1
[INFO] [stderr]   Downloaded eframe v0.31.1
[INFO] [stderr]   Downloaded glutin v0.32.3
[INFO] [stderr]   Downloaded egui-winit v0.31.1
[INFO] [stderr]   Downloaded emath v0.31.1
[INFO] [stderr]   Downloaded ecolor v0.31.1
[INFO] [stderr]   Downloaded egui v0.31.1
[INFO] [stderr]   Downloaded epaint_default_fonts v0.31.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+eb171a227f9e5de5d376b6edb56b174bc8235fb3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 829c8948c04f17dc90cfd84fa619ea8751a3e02c5c488ae4f3df72ec15eb4152
[INFO] running `Command { std: "docker" "start" "-a" "829c8948c04f17dc90cfd84fa619ea8751a3e02c5c488ae4f3df72ec15eb4152", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "829c8948c04f17dc90cfd84fa619ea8751a3e02c5c488ae4f3df72ec15eb4152", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "829c8948c04f17dc90cfd84fa619ea8751a3e02c5c488ae4f3df72ec15eb4152", kill_on_drop: false }`
[INFO] [stdout] 829c8948c04f17dc90cfd84fa619ea8751a3e02c5c488ae4f3df72ec15eb4152
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+eb171a227f9e5de5d376b6edb56b174bc8235fb3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 703609cabcabd07b1f962006bf276026ce55a1e0c65fb1d4aa3bb925bea7048d
[INFO] running `Command { std: "docker" "start" "-a" "703609cabcabd07b1f962006bf276026ce55a1e0c65fb1d4aa3bb925bea7048d", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.101
[INFO] [stderr]    Compiling libc v0.2.172
[INFO] [stderr]    Compiling bitflags v2.9.1
[INFO] [stderr]    Compiling rustix v0.38.44
[INFO] [stderr]    Compiling linux-raw-sys v0.4.15
[INFO] [stderr]    Compiling smallvec v1.15.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling libloading v0.8.7
[INFO] [stderr]    Compiling tracing-core v0.1.33
[INFO] [stderr]    Compiling hashbrown v0.15.3
[INFO] [stderr]    Compiling wayland-sys v0.31.6
[INFO] [stderr]    Compiling toml_datetime v0.6.9
[INFO] [stderr]    Compiling winnow v0.7.10
[INFO] [stderr]    Compiling cc v1.2.23
[INFO] [stderr]    Compiling futures-io v0.3.31
[INFO] [stderr]    Compiling quick-xml v0.37.5
[INFO] [stderr]    Compiling wayland-client v0.31.10
[INFO] [stderr]    Compiling endi v1.1.0
[INFO] [stderr]    Compiling futures-lite v2.6.0
[INFO] [stderr]    Compiling memoffset v0.9.1
[INFO] [stderr]    Compiling async-task v4.7.1
[INFO] [stderr]    Compiling piper v0.2.4
[INFO] [stderr]    Compiling dlib v0.5.2
[INFO] [stderr]    Compiling nix v0.29.0
[INFO] [stderr]    Compiling ttf-parser v0.25.1
[INFO] [stderr]    Compiling sha1 v0.10.6
[INFO] [stderr]    Compiling ordered-stream v0.2.0
[INFO] [stderr]    Compiling concurrent-queue v2.5.0
[INFO] [stderr]    Compiling indexmap v2.9.0
[INFO] [stderr]    Compiling event-listener v5.4.0
[INFO] [stderr]    Compiling ahash v0.8.12
[INFO] [stderr]    Compiling xml-rs v0.8.26
[INFO] [stderr]    Compiling wayland-scanner v0.31.6
[INFO] [stderr]    Compiling ab_glyph_rasterizer v0.1.8
[INFO] [stderr]    Compiling x11-dl v2.21.0
[INFO] [stderr]    Compiling xcursor v0.3.8
[INFO] [stderr]    Compiling event-listener-strategy v0.5.4
[INFO] [stderr]    Compiling cursor-icon v1.1.0
[INFO] [stderr]    Compiling smithay-client-toolkit v0.19.2
[INFO] [stderr]    Compiling strict-num v0.1.1
[INFO] [stderr]    Compiling accesskit v0.17.1
[INFO] [stderr]    Compiling async-lock v3.4.0
[INFO] [stderr]    Compiling async-channel v2.3.1
[INFO] [stderr]    Compiling async-broadcast v0.7.2
[INFO] [stderr]    Compiling x11rb-protocol v0.13.1
[INFO] [stderr]    Compiling gl_generator v0.14.0
[INFO] [stderr]    Compiling as-raw-xcb-connection v1.0.1
[INFO] [stderr]    Compiling immutable-chunkmap v2.0.6
[INFO] [stderr]    Compiling blocking v1.6.1
[INFO] [stderr]    Compiling async-executor v1.13.2
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling owned_ttf_parser v0.25.0
[INFO] [stderr]    Compiling wayland-backend v0.3.10
[INFO] [stderr]    Compiling async-fs v2.1.2
[INFO] [stderr]    Compiling xdg-home v1.3.0
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling ab_glyph v0.2.29
[INFO] [stderr]    Compiling getrandom v0.3.3
[INFO] [stderr]    Compiling memmap2 v0.9.5
[INFO] [stderr]    Compiling parking_lot_core v0.9.10
[INFO] [stderr]    Compiling winit v0.30.11
[INFO] [stderr]    Compiling parking_lot v0.12.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling accesskit_consumer v0.26.0
[INFO] [stderr]    Compiling glutin_egl_sys v0.7.1
[INFO] [stderr]    Compiling toml_edit v0.22.26
[INFO] [stderr]    Compiling glutin_glx_sys v0.6.1
[INFO] [stderr]    Compiling xkbcommon-dl v0.4.2
[INFO] [stderr]    Compiling dpi v0.1.2
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling smol_str v0.2.2
[INFO] [stderr]    Compiling epaint_default_fonts v0.31.1
[INFO] [stderr]    Compiling profiling v1.0.16
[INFO] [stderr]    Compiling form_urlencoded v1.2.1
[INFO] [stderr]    Compiling glutin v0.32.3
[INFO] [stderr]    Compiling glutin-winit v0.5.0
[INFO] [stderr]    Compiling home v0.5.11
[INFO] [stderr]    Compiling litrs v0.4.1
[INFO] [stderr]    Compiling document-features v0.2.11
[INFO] [stderr]    Compiling proc-macro-crate v3.3.0
[INFO] [stderr]    Compiling synstructure v0.13.2
[INFO] [stderr]    Compiling zvariant_utils v2.1.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.28
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling bytemuck_derive v1.9.3
[INFO] [stderr]    Compiling enumflags2_derive v0.7.11
[INFO] [stderr]    Compiling zvariant_derive v4.2.0
[INFO] [stderr]    Compiling zerovec-derive v0.11.1
[INFO] [stderr]    Compiling displaydoc v0.2.5
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling async-trait v0.1.88
[INFO] [stderr]    Compiling zerofrom-derive v0.1.6
[INFO] [stderr]    Compiling yoke-derive v0.8.0
[INFO] [stderr]    Compiling zbus_macros v4.4.0
[INFO] [stderr]    Compiling serde_repr v0.1.20
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling zerofrom v0.1.6
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling bytemuck v1.23.0
[INFO] [stderr]    Compiling yoke v0.8.0
[INFO] [stderr]    Compiling tracing v0.1.41
[INFO] [stderr]    Compiling tiny-skia-path v0.11.4
[INFO] [stderr]    Compiling emath v0.31.1
[INFO] [stderr]    Compiling image v0.25.6
[INFO] [stderr]    Compiling polling v3.7.4
[INFO] [stderr]    Compiling zerovec v0.11.2
[INFO] [stderr]    Compiling zerotrie v0.2.2
[INFO] [stderr]    Compiling wayland-csd-frame v0.3.0
[INFO] [stderr]    Compiling async-io v2.4.0
[INFO] [stderr]    Compiling calloop v0.13.0
[INFO] [stderr]    Compiling ecolor v0.31.1
[INFO] [stderr]    Compiling epaint v0.31.1
[INFO] [stderr]    Compiling tiny-skia v0.11.4
[INFO] [stderr]    Compiling tinystr v0.8.1
[INFO] [stderr]    Compiling potential_utf v0.1.2
[INFO] [stderr]    Compiling icu_collections v2.0.0
[INFO] [stderr]    Compiling icu_locale_core v2.0.0
[INFO] [stderr]    Compiling wayland-protocols v0.32.8
[INFO] [stderr]    Compiling calloop-wayland-source v0.3.0
[INFO] [stderr]    Compiling wayland-cursor v0.31.10
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling icu_provider v2.0.0
[INFO] [stderr]    Compiling egui v0.31.1
[INFO] [stderr]    Compiling icu_properties v2.0.1
[INFO] [stderr]    Compiling icu_normalizer v2.0.0
[INFO] [stderr]    Compiling idna_adapter v1.2.1
[INFO] [stderr]    Compiling idna v1.0.3
[INFO] [stderr]    Compiling enumflags2 v0.7.11
[INFO] [stderr]    Compiling quick-xml v0.30.0
[INFO] [stderr]    Compiling url v2.5.4
[INFO] [stderr]    Compiling zvariant v4.2.0
[INFO] [stderr]    Compiling webbrowser v1.0.4
[INFO] [stderr]    Compiling egui_glow v0.31.1
[INFO] [stderr]    Compiling zbus_names v3.0.0
[INFO] [stderr]    Compiling zbus_xml v4.0.0
[INFO] [stderr]    Compiling zbus v4.4.0
[INFO] [stderr]    Compiling zbus-lockstep v0.4.4
[INFO] [stderr]    Compiling wayland-protocols-wlr v0.3.8
[INFO] [stderr]    Compiling wayland-protocols-plasma v0.3.8
[INFO] [stderr]    Compiling zbus-lockstep-macros v0.4.4
[INFO] [stderr]    Compiling x11rb v0.13.1
[INFO] [stderr]    Compiling arboard v3.5.0
[INFO] [stderr]    Compiling sctk-adwaita v0.10.1
[INFO] [stderr]    Compiling smithay-clipboard v0.7.2
[INFO] [stderr]    Compiling atspi-common v0.6.0
[INFO] [stderr]    Compiling atspi-proxies v0.6.0
[INFO] [stderr]    Compiling accesskit_atspi_common v0.10.1
[INFO] [stderr]    Compiling atspi-connection v0.6.0
[INFO] [stderr]    Compiling atspi v0.22.0
[INFO] [stderr]    Compiling accesskit_unix v0.13.1
[INFO] [stderr]    Compiling accesskit_winit v0.23.1
[INFO] [stderr]    Compiling egui-winit v0.31.1
[INFO] [stderr]    Compiling eframe v0.31.1
[INFO] [stderr]    Compiling ttt v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `HashSet`
[INFO] [stdout]  --> src/main.rs:1:33
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{HashMap, HashSet};
[INFO] [stdout]   |                                 ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `frame`
[INFO] [stdout]    --> src/main.rs:249:55
[INFO] [stdout]     |
[INFO] [stdout] 249 |     fn update(&mut self, ctx: &eframe::egui::Context, frame: &mut eframe::Frame) {
[INFO] [stdout]     |                                                       ^^^^^ help: if this is intentional, prefix it with an underscore: `_frame`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `positions` is never read
[INFO] [stdout]   --> src/main.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub struct Board {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 24 |     positions: HashMap<u32, i64>,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `hash` is never used
[INFO] [stdout]    --> src/main.rs:152:8
[INFO] [stdout]     |
[INFO] [stdout]  34 | impl Board {
[INFO] [stdout]     | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 152 |     fn hash(&self) -> u32 {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/main.rs:118:30
[INFO] [stdout]     |
[INFO] [stdout] 118 |     pub fn available_squares(&self) -> BoardIter {
[INFO] [stdout]     |                              ^^^^^     ^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                              |
[INFO] [stdout]     |                              the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 118 |     pub fn available_squares(&self) -> BoardIter<'_> {
[INFO] [stdout]     |                                                 ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 44s
[INFO] running `Command { std: "docker" "inspect" "703609cabcabd07b1f962006bf276026ce55a1e0c65fb1d4aa3bb925bea7048d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "703609cabcabd07b1f962006bf276026ce55a1e0c65fb1d4aa3bb925bea7048d", kill_on_drop: false }`
[INFO] [stdout] 703609cabcabd07b1f962006bf276026ce55a1e0c65fb1d4aa3bb925bea7048d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+eb171a227f9e5de5d376b6edb56b174bc8235fb3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b51002512c820b87dbf7b719ea7700d0b606900fc510e6f70f35b4898fa36b5b
[INFO] running `Command { std: "docker" "start" "-a" "b51002512c820b87dbf7b719ea7700d0b606900fc510e6f70f35b4898fa36b5b", kill_on_drop: false }`
[INFO] [stderr]    Compiling ttt v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `HashSet`
[INFO] [stdout]  --> src/main.rs:1:33
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{HashMap, HashSet};
[INFO] [stdout]   |                                 ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `frame`
[INFO] [stdout]    --> src/main.rs:249:55
[INFO] [stdout]     |
[INFO] [stdout] 249 |     fn update(&mut self, ctx: &eframe::egui::Context, frame: &mut eframe::Frame) {
[INFO] [stdout]     |                                                       ^^^^^ help: if this is intentional, prefix it with an underscore: `_frame`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `positions` is never read
[INFO] [stdout]   --> src/main.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub struct Board {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 24 |     positions: HashMap<u32, i64>,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `hash` is never used
[INFO] [stdout]    --> src/main.rs:152:8
[INFO] [stdout]     |
[INFO] [stdout]  34 | impl Board {
[INFO] [stdout]     | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 152 |     fn hash(&self) -> u32 {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/main.rs:118:30
[INFO] [stdout]     |
[INFO] [stdout] 118 |     pub fn available_squares(&self) -> BoardIter {
[INFO] [stdout]     |                              ^^^^^     ^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                              |
[INFO] [stdout]     |                              the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 118 |     pub fn available_squares(&self) -> BoardIter<'_> {
[INFO] [stdout]     |                                                 ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.83s
[INFO] running `Command { std: "docker" "inspect" "b51002512c820b87dbf7b719ea7700d0b606900fc510e6f70f35b4898fa36b5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b51002512c820b87dbf7b719ea7700d0b606900fc510e6f70f35b4898fa36b5b", kill_on_drop: false }`
[INFO] [stdout] b51002512c820b87dbf7b719ea7700d0b606900fc510e6f70f35b4898fa36b5b
