[INFO] cloning repository https://github.com/ngobach/ggez-2048
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ngobach/ggez-2048" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fngobach%2Fggez-2048", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fngobach%2Fggez-2048'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 726807bb5266cc0b2290f7bb72d74db01d2d649d
[INFO] testing ngobach/ggez-2048 against 1.54.0 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fngobach%2Fggez-2048" "/workspace/builds/worker-53/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-53/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ngobach/ggez-2048 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ngobach/ggez-2048
[INFO] finished tweaking git repo https://github.com/ngobach/ggez-2048
[INFO] tweaked toml for git repo https://github.com/ngobach/ggez-2048 written to /workspace/builds/worker-53/source/Cargo.toml
[INFO] crate git repo https://github.com/ngobach/ggez-2048 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "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
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[INFO] [stdout] 11ca130a7108984250de52ecb476712d873bd1d9ff8721ad39c15f4567e6a171
[INFO] running `Command { std: "docker" "start" "-a" "11ca130a7108984250de52ecb476712d873bd1d9ff8721ad39c15f4567e6a171", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
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[INFO] [stderr]    Compiling ggez v0.5.1
[INFO] [stderr]    Compiling rodio v0.9.0
[INFO] [stderr]    Compiling ggez-2048 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `mint`
[INFO] [stdout]  --> src/consts.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use mint;
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `DrawMode`, `MeshBuilder`, `self`
[INFO] [stdout]  --> src/game/board.rs:1:22
[INFO] [stdout]   |
[INFO] [stdout] 1 | use ggez::graphics::{self, Align, DrawMode, DrawParam, MeshBuilder, Rect, Scale};
[INFO] [stdout]   |                      ^^^^         ^^^^^^^^             ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `turn`
[INFO] [stdout]    --> src/game/board.rs:117:17
[INFO] [stdout]     |
[INFO] [stdout] 117 |             for turn in 0..4 {
[INFO] [stdout]     |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_turn`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ctx`
[INFO] [stdout]   --> src/game/state.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |         ctx: &mut Context,
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `keymods`
[INFO] [stdout]   --> src/game/state.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |         keymods: KeyMods,
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_keymods`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/game/state.rs:45:13
[INFO] [stdout]    |
[INFO] [stdout] 45 |         let mut vector: Option<(i8, i8)> = match keycode {
[INFO] [stdout]    |             ----^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/game/state.rs:72:13
[INFO] [stdout]    |
[INFO] [stdout] 72 |         let mut score_bg = MeshBuilder::new()
[INFO] [stdout]    |             ----^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `root`
[INFO] [stdout]   --> src/game/board.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     root: Rect,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `dump_board`
[INFO] [stdout]   --> src/game/board.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn dump_board(b: &[[Cell; 4]; 4]) {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `safe_num`
[INFO] [stdout]    --> src/game/board.rs:101:12
[INFO] [stdout]     |
[INFO] [stdout] 101 |         fn safe_num(x: i8) -> bool {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `vertical`
[INFO] [stdout]  --> src/game/cell.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     vertical: u8,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `horizontal`
[INFO] [stdout]  --> src/game/cell.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     horizontal: u8,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call currently resolves to `<&[T; N] as IntoIterator>::into_iter` (due to autoref coercions), but that might change in the future when `IntoIterator` impls for arrays are added.
[INFO] [stdout]   --> src/game/brush.rs:17:58
[INFO] [stdout]    |
[INFO] [stdout] 17 |     for x in [rect.x + radius, rect.x + rect.w - radius].into_iter() {
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `.iter()` instead of `.into_iter()` to avoid ambiguity: `iter`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(array_into_iter)]` 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 a future release!
[INFO] [stdout]    = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call currently resolves to `<&[T; N] as IntoIterator>::into_iter` (due to autoref coercions), but that might change in the future when `IntoIterator` impls for arrays are added.
[INFO] [stdout]   --> src/game/brush.rs:18:62
[INFO] [stdout]    |
[INFO] [stdout] 18 |         for y in [rect.y + radius, rect.y + rect.h - radius].into_iter() {
[INFO] [stdout]    |                                                              ^^^^^^^^^ help: use `.iter()` instead of `.into_iter()` to avoid ambiguity: `iter`
[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 #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 19s
[INFO] running `Command { std: "docker" "inspect" "fcdbb81b28530407e794f0e4d74e1cea59d8d92eb56024aa417b7a33a0b711d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fcdbb81b28530407e794f0e4d74e1cea59d8d92eb56024aa417b7a33a0b711d9", kill_on_drop: false }`
[INFO] [stdout] fcdbb81b28530407e794f0e4d74e1cea59d8d92eb56024aa417b7a33a0b711d9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 108fe2b617974bdc0867ffcc1bb515f068e1d058e1de49b8394904cf789ce833
[INFO] running `Command { std: "docker" "start" "-a" "108fe2b617974bdc0867ffcc1bb515f068e1d058e1de49b8394904cf789ce833", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling ggez-2048 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `mint`
[INFO] [stdout]  --> src/consts.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use mint;
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `DrawMode`, `MeshBuilder`, `self`
[INFO] [stdout]  --> src/game/board.rs:1:22
[INFO] [stdout]   |
[INFO] [stdout] 1 | use ggez::graphics::{self, Align, DrawMode, DrawParam, MeshBuilder, Rect, Scale};
[INFO] [stdout]   |                      ^^^^         ^^^^^^^^             ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `turn`
[INFO] [stdout]    --> src/game/board.rs:117:17
[INFO] [stdout]     |
[INFO] [stdout] 117 |             for turn in 0..4 {
[INFO] [stdout]     |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_turn`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ctx`
[INFO] [stdout]   --> src/game/state.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |         ctx: &mut Context,
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `keymods`
[INFO] [stdout]   --> src/game/state.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |         keymods: KeyMods,
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_keymods`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/game/state.rs:45:13
[INFO] [stdout]    |
[INFO] [stdout] 45 |         let mut vector: Option<(i8, i8)> = match keycode {
[INFO] [stdout]    |             ----^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/game/state.rs:72:13
[INFO] [stdout]    |
[INFO] [stdout] 72 |         let mut score_bg = MeshBuilder::new()
[INFO] [stdout]    |             ----^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `root`
[INFO] [stdout]   --> src/game/board.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     root: Rect,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `dump_board`
[INFO] [stdout]   --> src/game/board.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn dump_board(b: &[[Cell; 4]; 4]) {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `safe_num`
[INFO] [stdout]    --> src/game/board.rs:101:12
[INFO] [stdout]     |
[INFO] [stdout] 101 |         fn safe_num(x: i8) -> bool {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `vertical`
[INFO] [stdout]  --> src/game/cell.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     vertical: u8,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `horizontal`
[INFO] [stdout]  --> src/game/cell.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     horizontal: u8,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call currently resolves to `<&[T; N] as IntoIterator>::into_iter` (due to autoref coercions), but that might change in the future when `IntoIterator` impls for arrays are added.
[INFO] [stdout]   --> src/game/brush.rs:17:58
[INFO] [stdout]    |
[INFO] [stdout] 17 |     for x in [rect.x + radius, rect.x + rect.w - radius].into_iter() {
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `.iter()` instead of `.into_iter()` to avoid ambiguity: `iter`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(array_into_iter)]` 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 a future release!
[INFO] [stdout]    = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call currently resolves to `<&[T; N] as IntoIterator>::into_iter` (due to autoref coercions), but that might change in the future when `IntoIterator` impls for arrays are added.
[INFO] [stdout]   --> src/game/brush.rs:18:62
[INFO] [stdout]    |
[INFO] [stdout] 18 |         for y in [rect.y + radius, rect.y + rect.h - radius].into_iter() {
[INFO] [stdout]    |                                                              ^^^^^^^^^ help: use `.iter()` instead of `.into_iter()` to avoid ambiguity: `iter`
[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 #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 7.98s
[INFO] running `Command { std: "docker" "inspect" "108fe2b617974bdc0867ffcc1bb515f068e1d058e1de49b8394904cf789ce833", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "108fe2b617974bdc0867ffcc1bb515f068e1d058e1de49b8394904cf789ce833", kill_on_drop: false }`
[INFO] [stdout] 108fe2b617974bdc0867ffcc1bb515f068e1d058e1de49b8394904cf789ce833
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 044edad6bb4f24e3ffc171222cd7120cacf3ef1cca67f01a89f4e1da88ba7ff6
[INFO] running `Command { std: "docker" "start" "-a" "044edad6bb4f24e3ffc171222cd7120cacf3ef1cca67f01a89f4e1da88ba7ff6", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `mint`
[INFO] [stderr]  --> src/consts.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use mint;
[INFO] [stderr]   |     ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `DrawMode`, `MeshBuilder`, `self`
[INFO] [stderr]  --> src/game/board.rs:1:22
[INFO] [stderr]   |
[INFO] [stderr] 1 | use ggez::graphics::{self, Align, DrawMode, DrawParam, MeshBuilder, Rect, Scale};
[INFO] [stderr]   |                      ^^^^         ^^^^^^^^             ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `turn`
[INFO] [stderr]    --> src/game/board.rs:117:17
[INFO] [stderr]     |
[INFO] [stderr] 117 |             for turn in 0..4 {
[INFO] [stderr]     |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_turn`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ctx`
[INFO] [stderr]   --> src/game/state.rs:40:9
[INFO] [stderr]    |
[INFO] [stderr] 40 |         ctx: &mut Context,
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `keymods`
[INFO] [stderr]   --> src/game/state.rs:42:9
[INFO] [stderr]    |
[INFO] [stderr] 42 |         keymods: KeyMods,
[INFO] [stderr]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_keymods`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/game/state.rs:45:13
[INFO] [stderr]    |
[INFO] [stderr] 45 |         let mut vector: Option<(i8, i8)> = match keycode {
[INFO] [stderr]    |             ----^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/game/state.rs:72:13
[INFO] [stderr]    |
[INFO] [stderr] 72 |         let mut score_bg = MeshBuilder::new()
[INFO] [stderr]    |             ----^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `root`
[INFO] [stderr]   --> src/game/board.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     root: Rect,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `dump_board`
[INFO] [stderr]   --> src/game/board.rs:27:4
[INFO] [stderr]    |
[INFO] [stderr] 27 | fn dump_board(b: &[[Cell; 4]; 4]) {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `safe_num`
[INFO] [stderr]    --> src/game/board.rs:101:12
[INFO] [stderr]     |
[INFO] [stderr] 101 |         fn safe_num(x: i8) -> bool {
[INFO] [stderr]     |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `vertical`
[INFO] [stderr]  --> src/game/cell.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     vertical: u8,
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `horizontal`
[INFO] [stderr]  --> src/game/cell.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     horizontal: u8,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: this method call currently resolves to `<&[T; N] as IntoIterator>::into_iter` (due to autoref coercions), but that might change in the future when `IntoIterator` impls for arrays are added.
[INFO] [stderr]   --> src/game/brush.rs:17:58
[INFO] [stderr]    |
[INFO] [stderr] 17 |     for x in [rect.x + radius, rect.x + rect.w - radius].into_iter() {
[INFO] [stderr]    |                                                          ^^^^^^^^^ help: use `.iter()` instead of `.into_iter()` to avoid ambiguity: `iter`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(array_into_iter)]` on by default
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stderr] 
[INFO] [stderr] warning: this method call currently resolves to `<&[T; N] as IntoIterator>::into_iter` (due to autoref coercions), but that might change in the future when `IntoIterator` impls for arrays are added.
[INFO] [stderr]   --> src/game/brush.rs:18:62
[INFO] [stderr]    |
[INFO] [stderr] 18 |         for y in [rect.y + radius, rect.y + rect.h - radius].into_iter() {
[INFO] [stderr]    |                                                              ^^^^^^^^^ help: use `.iter()` instead of `.into_iter()` to avoid ambiguity: `iter`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stderr] 
[INFO] [stderr] warning: 14 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.68s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ggez_2048-66e093579bc81270)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "044edad6bb4f24e3ffc171222cd7120cacf3ef1cca67f01a89f4e1da88ba7ff6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "044edad6bb4f24e3ffc171222cd7120cacf3ef1cca67f01a89f4e1da88ba7ff6", kill_on_drop: false }`
[INFO] [stdout] 044edad6bb4f24e3ffc171222cd7120cacf3ef1cca67f01a89f4e1da88ba7ff6
