[INFO] cloning repository https://github.com/Shaowy05/queens-solver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Shaowy05/queens-solver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShaowy05%2Fqueens-solver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShaowy05%2Fqueens-solver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ef7df051f17ab11f22e2d08be16adc3d5f88c110
[INFO] checking Shaowy05/queens-solver against try#50f413885985a8b0a0b6ca0766a0aedd45304953 for pr-155657-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShaowy05%2Fqueens-solver" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Shaowy05/queens-solver
[INFO] finished tweaking git repo https://github.com/Shaowy05/queens-solver
[INFO] tweaked toml for git repo https://github.com/Shaowy05/queens-solver written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Shaowy05/queens-solver on toolchain 50f413885985a8b0a0b6ca0766a0aedd45304953
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+50f413885985a8b0a0b6ca0766a0aedd45304953" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Shaowy05/queens-solver 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" "+50f413885985a8b0a0b6ca0766a0aedd45304953" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+50f413885985a8b0a0b6ca0766a0aedd45304953" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ebe5a4dbf93ca78f442d76b2138e2ed9cfa23ef4d18fc2e806286219d41fca2d
[INFO] running `Command { std: "docker" "start" "-a" "ebe5a4dbf93ca78f442d76b2138e2ed9cfa23ef4d18fc2e806286219d41fca2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ebe5a4dbf93ca78f442d76b2138e2ed9cfa23ef4d18fc2e806286219d41fca2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ebe5a4dbf93ca78f442d76b2138e2ed9cfa23ef4d18fc2e806286219d41fca2d", kill_on_drop: false }`
[INFO] [stdout] ebe5a4dbf93ca78f442d76b2138e2ed9cfa23ef4d18fc2e806286219d41fca2d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+50f413885985a8b0a0b6ca0766a0aedd45304953" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f7da618fdb3348422f5183c6e82c93d94339da167ccda14c4414ab4a83ba3539
[INFO] running `Command { std: "docker" "start" "-a" "f7da618fdb3348422f5183c6e82c93d94339da167ccda14c4414ab4a83ba3539", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling libc v0.2.158
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling autocfg v1.3.0
[INFO] [stderr]    Compiling siphasher v0.3.11
[INFO] [stderr]     Checking once_cell v1.19.0
[INFO] [stderr]     Checking itoa v1.0.11
[INFO] [stderr]     Checking smallvec v1.13.2
[INFO] [stderr]     Checking pin-project-lite v0.2.14
[INFO] [stderr]     Checking bytes v1.7.1
[INFO] [stderr]     Checking futures-core v0.3.30
[INFO] [stderr]    Compiling cc v1.1.15
[INFO] [stderr]    Compiling vcpkg v0.2.15
[INFO] [stderr]    Compiling pkg-config v0.3.30
[INFO] [stderr]     Checking futures-sink v0.3.30
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]     Checking log v0.4.22
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]    Compiling phf_shared v0.10.0
[INFO] [stderr]    Compiling phf_shared v0.11.2
[INFO] [stderr]    Compiling serde v1.0.209
[INFO] [stderr]     Checking bitflags v2.6.0
[INFO] [stderr]     Checking new_debug_unreachable v1.0.6
[INFO] [stderr]     Checking futures-task v0.3.30
[INFO] [stderr]    Compiling parking_lot_core v0.9.10
[INFO] [stderr]     Checking futures-io v0.3.30
[INFO] [stderr]     Checking tracing-core v0.1.32
[INFO] [stderr]     Checking hashbrown v0.14.5
[INFO] [stderr]     Checking http v1.1.0
[INFO] [stderr]     Checking equivalent v1.0.1
[INFO] [stderr]     Checking foreign-types-shared v0.1.1
[INFO] [stderr]    Compiling httparse v1.9.4
[INFO] [stderr]    Compiling openssl v0.10.66
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling lock_api v0.4.12
[INFO] [stderr]     Checking foreign-types v0.3.2
[INFO] [stderr]     Checking mac v0.1.1
[INFO] [stderr]    Compiling native-tls v0.2.12
[INFO] [stderr]     Checking precomputed-hash v0.1.1
[INFO] [stderr]     Checking tinyvec_macros v0.1.1
[INFO] [stderr]     Checking try-lock v0.2.5
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling getrandom v0.2.15
[INFO] [stderr]     Checking socket2 v0.5.7
[INFO] [stderr]     Checking mio v1.0.2
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking tinyvec v1.8.0
[INFO] [stderr]     Checking want v0.3.1
[INFO] [stderr]    Compiling syn v2.0.77
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]     Checking indexmap v2.5.0
[INFO] [stderr]     Checking http-body v1.0.1
[INFO] [stderr]     Checking futf v0.1.5
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]     Checking utf-8 v0.7.6
[INFO] [stderr]     Checking openssl-probe v0.1.5
[INFO] [stderr]     Checking dtoa v1.0.9
[INFO] [stderr]     Checking percent-encoding v2.3.1
[INFO] [stderr]     Checking tower-service v0.3.3
[INFO] [stderr]     Checking tokio v1.40.0
[INFO] [stderr]     Checking parking_lot v0.12.3
[INFO] [stderr]     Checking tower-layer v0.3.3
[INFO] [stderr]    Compiling ahash v0.8.11
[INFO] [stderr]     Checking dtoa-short v0.3.5
[INFO] [stderr]     Checking tendril v0.4.3
[INFO] [stderr]     Checking form_urlencoded v1.2.1
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking unicode-bidi v0.3.15
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]     Checking phf v0.10.1
[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]     Checking base64 v0.22.1
[INFO] [stderr]     Checking servo_arc v0.3.0
[INFO] [stderr]     Checking rustls-pki-types v1.8.0
[INFO] [stderr]     Checking unicode-width v0.1.13
[INFO] [stderr]     Checking ryu v1.0.18
[INFO] [stderr]     Checking regex-syntax v0.8.4
[INFO] [stderr]     Checking sync_wrapper v1.0.1
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking encoding_rs v0.8.34
[INFO] [stderr]     Checking ego-tree v0.6.3
[INFO] [stderr]     Checking ipnet v2.9.0
[INFO] [stderr]    Compiling openssl-sys v0.9.103
[INFO] [stderr]     Checking rustls-pemfile v2.1.3
[INFO] [stderr]     Checking unicode-normalization v0.1.23
[INFO] [stderr]     Checking idna v0.5.0
[INFO] [stderr]     Checking url v2.5.2
[INFO] [stderr]     Checking regex-automata v0.4.7
[INFO] [stderr]     Checking string_cache v0.8.7
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking http-body-util v0.1.2
[INFO] [stderr]     Checking tokio-util v0.7.11
[INFO] [stderr]     Checking h2 v0.4.6
[INFO] [stderr]     Checking regex v1.10.6
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]    Compiling pin-project-internal v1.1.5
[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stderr]    Compiling cssparser-macros v0.6.1
[INFO] [stderr]    Compiling html5ever v0.27.0
[INFO] [stderr]    Compiling derive_more v0.99.18
[INFO] [stderr]     Checking pin-project v1.1.5
[INFO] [stderr]     Checking tower v0.4.13
[INFO] [stderr]    Compiling ppv-lite86 v0.2.20
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]     Checking hyper v1.4.1
[INFO] [stderr]     Checking tokio-native-tls v0.3.1
[INFO] [stderr]    Compiling phf_generator v0.10.0
[INFO] [stderr]    Compiling phf_generator v0.11.2
[INFO] [stderr]    Compiling string_cache_codegen v0.5.2
[INFO] [stderr]    Compiling phf_codegen v0.10.0
[INFO] [stderr]    Compiling phf_codegen v0.11.2
[INFO] [stderr]    Compiling phf_macros v0.11.2
[INFO] [stderr]    Compiling selectors v0.25.0
[INFO] [stderr]     Checking hyper-util v0.1.7
[INFO] [stderr]    Compiling markup5ever v0.12.1
[INFO] [stderr]     Checking phf v0.11.2
[INFO] [stderr]     Checking cssparser v0.31.2
[INFO] [stderr]     Checking hyper-tls v0.6.0
[INFO] [stderr]     Checking reqwest v0.12.7
[INFO] [stderr]     Checking scraper v0.20.0
[INFO] [stderr]     Checking queens-solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `coord`
[INFO] [stdout]   --> src/main.rs:68:15
[INFO] [stdout]    |
[INFO] [stdout] 68 |         for (&coord, &square) in self.squares.iter() {
[INFO] [stdout]    |               ^^^^^ help: if this is intentional, prefix it with an underscore: `_coord`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `game`
[INFO] [stdout]    --> src/main.rs:119:9
[INFO] [stdout]     |
[INFO] [stdout] 119 |     let game = Game::new(starting_board);
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_game`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Cross` and `Queen` are never constructed
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | enum Mark {
[INFO] [stdout]    |      ---- variants in this enum
[INFO] [stdout] 11 |     Empty,
[INFO] [stdout] 12 |     Cross,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 13 |     Queen,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Mark` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0`, `1`, and `2` are never read
[INFO] [stdout]   --> src/main.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | struct RGB(u8, u8, u8);
[INFO] [stdout]    |        --- ^^  ^^  ^^
[INFO] [stdout]    |        |
[INFO] [stdout]    |        fields in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing these fields
[INFO] [stdout]    = note: `RGB` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `colour` and `mark` are never read
[INFO] [stdout]   --> src/main.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | struct Square {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 21 |     colour: RGB,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 22 |     mark: Mark,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Square` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `mark_with` and `get_mark` are never used
[INFO] [stdout]   --> src/main.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | impl Square {
[INFO] [stdout]    | ----------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 33 |     fn mark_with(&self, mark: Mark) -> Self {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 37 |     fn get_mark(&self) -> Mark {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `squares` is never read
[INFO] [stdout]   --> src/main.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 43 | struct Board {
[INFO] [stdout]    |        ----- field in this struct
[INFO] [stdout] 44 |     squares: SquareMap,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Board` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `mark_square` and `check_validity` are never used
[INFO] [stdout]   --> src/main.rs:52:8
[INFO] [stdout]    |
[INFO] [stdout] 47 | impl Board {
[INFO] [stdout]    | ---------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 52 |     fn mark_square(&self, x: usize, y: usize, mark: Mark) -> Self {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 67 |     fn check_validity(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `boards` is never read
[INFO] [stdout]   --> src/main.rs:78:5
[INFO] [stdout]    |
[INFO] [stdout] 77 | struct Game {
[INFO] [stdout]    |        ---- field in this struct
[INFO] [stdout] 78 |     boards: Vec<Board>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Game` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `coord`
[INFO] [stdout]   --> src/main.rs:68:15
[INFO] [stdout]    |
[INFO] [stdout] 68 |         for (&coord, &square) in self.squares.iter() {
[INFO] [stdout]    |               ^^^^^ help: if this is intentional, prefix it with an underscore: `_coord`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `game`
[INFO] [stdout]    --> src/main.rs:119:9
[INFO] [stdout]     |
[INFO] [stdout] 119 |     let game = Game::new(starting_board);
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_game`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Cross` and `Queen` are never constructed
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | enum Mark {
[INFO] [stdout]    |      ---- variants in this enum
[INFO] [stdout] 11 |     Empty,
[INFO] [stdout] 12 |     Cross,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 13 |     Queen,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Mark` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0`, `1`, and `2` are never read
[INFO] [stdout]   --> src/main.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | struct RGB(u8, u8, u8);
[INFO] [stdout]    |        --- ^^  ^^  ^^
[INFO] [stdout]    |        |
[INFO] [stdout]    |        fields in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing these fields
[INFO] [stdout]    = note: `RGB` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `colour` and `mark` are never read
[INFO] [stdout]   --> src/main.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | struct Square {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 21 |     colour: RGB,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 22 |     mark: Mark,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Square` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `mark_with` and `get_mark` are never used
[INFO] [stdout]   --> src/main.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | impl Square {
[INFO] [stdout]    | ----------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 33 |     fn mark_with(&self, mark: Mark) -> Self {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 37 |     fn get_mark(&self) -> Mark {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `squares` is never read
[INFO] [stdout]   --> src/main.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 43 | struct Board {
[INFO] [stdout]    |        ----- field in this struct
[INFO] [stdout] 44 |     squares: SquareMap,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Board` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `mark_square` and `check_validity` are never used
[INFO] [stdout]   --> src/main.rs:52:8
[INFO] [stdout]    |
[INFO] [stdout] 47 | impl Board {
[INFO] [stdout]    | ---------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 52 |     fn mark_square(&self, x: usize, y: usize, mark: Mark) -> Self {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 67 |     fn check_validity(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `boards` is never read
[INFO] [stdout]   --> src/main.rs:78:5
[INFO] [stdout]    |
[INFO] [stdout] 77 | struct Game {
[INFO] [stdout]    |        ---- field in this struct
[INFO] [stdout] 78 |     boards: Vec<Board>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Game` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 22.82s
[INFO] running `Command { std: "docker" "inspect" "f7da618fdb3348422f5183c6e82c93d94339da167ccda14c4414ab4a83ba3539", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7da618fdb3348422f5183c6e82c93d94339da167ccda14c4414ab4a83ba3539", kill_on_drop: false }`
[INFO] [stdout] f7da618fdb3348422f5183c6e82c93d94339da167ccda14c4414ab4a83ba3539
