[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] checking ngobach/ggez-2048 against try#b1f2594eac607c1f051534800237eeedb5590a49 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fngobach%2Fggez-2048" "/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/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-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ngobach/ggez-2048 on toolchain b1f2594eac607c1f051534800237eeedb5590a49
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ngobach/ggez-2048 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" "+b1f2594eac607c1f051534800237eeedb5590a49" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 713630d98d85d1ef0315c42f5a3ae6c3c48cc03a1a25b89466d583c5164e1584
[INFO] running `Command { std: "docker" "start" "-a" "713630d98d85d1ef0315c42f5a3ae6c3c48cc03a1a25b89466d583c5164e1584", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "713630d98d85d1ef0315c42f5a3ae6c3c48cc03a1a25b89466d583c5164e1584", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "713630d98d85d1ef0315c42f5a3ae6c3c48cc03a1a25b89466d583c5164e1584", kill_on_drop: false }`
[INFO] [stdout] 713630d98d85d1ef0315c42f5a3ae6c3c48cc03a1a25b89466d583c5164e1584
[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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a9bd93dd0d128a1e8a46c622833ddd6a215688726a7aa6c9681159b1cf99420d
[INFO] running `Command { std: "docker" "start" "-a" "a9bd93dd0d128a1e8a46c622833ddd6a215688726a7aa6c9681159b1cf99420d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling autocfg v0.1.6
[INFO] [stderr]    Compiling cc v1.0.45
[INFO] [stderr]    Compiling serde v1.0.100
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling xml-rs v0.8.0
[INFO] [stderr]    Compiling cfg-if v0.1.9
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling arrayvec v0.4.11
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling pkg-config v0.3.16
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling gl_generator v0.11.0
[INFO] [stderr]    Compiling wayland-scanner v0.21.13
[INFO] [stderr]     Checking num_cpus v1.10.1
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking ordered-float v1.0.2
[INFO] [stderr]     Checking stb_truetype v0.3.0
[INFO] [stderr]     Checking rustc-hash v1.0.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.3
[INFO] [stderr]     Checking dlib v0.4.1
[INFO] [stderr]    Compiling backtrace-sys v0.1.31
[INFO] [stderr]     Checking wayland-sys v0.21.13
[INFO] [stderr]     Checking nix v0.14.1
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling ryu v1.0.0
[INFO] [stderr]    Compiling getrandom v0.1.12
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling x11-dl v2.18.4
[INFO] [stderr]     Checking downcast-rs v1.0.4
[INFO] [stderr]     Checking same-file v1.0.5
[INFO] [stderr]    Compiling libm v0.1.4
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking walkdir v2.2.9
[INFO] [stderr]    Compiling backtrace v0.3.37
[INFO] [stderr]     Checking line_drawing v0.7.0
[INFO] [stderr]    Compiling wayland-client v0.21.13
[INFO] [stderr]    Compiling wayland-protocols v0.21.13
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling typenum v1.11.2
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling itoa v0.4.4
[INFO] [stderr]    Compiling serde_json v1.0.40
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling memoffset v0.5.1
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]     Checking crossbeam-epoch v0.7.2
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]     Checking rusttype v0.8.0
[INFO] [stderr]     Checking c2-chacha v0.2.2
[INFO] [stderr]     Checking rusttype v0.7.9
[INFO] [stderr]     Checking wayland-commons v0.21.13
[INFO] [stderr]     Checking andrew v0.2.1
[INFO] [stderr]    Compiling error-chain v0.12.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling glutin_glx_sys v0.1.5
[INFO] [stderr]    Compiling gfx_gl v0.6.0
[INFO] [stderr]    Compiling glutin_egl_sys v0.1.3
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]    Compiling minimp3-sys v0.3.1
[INFO] [stderr]    Compiling bzip2-sys v0.1.7
[INFO] [stderr]    Compiling alsa-sys v0.1.2
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]     Checking lock_api v0.3.1
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking draw_state v0.8.0
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling nix v0.11.1
[INFO] [stderr]     Checking adler32 v1.0.3
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]    Compiling tempdir v0.3.7
[INFO] [stderr]    Compiling pulldown-cmark v0.2.0
[INFO] [stderr]     Checking sid v0.5.2
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]    Compiling euclid_macros v0.1.0
[INFO] [stderr]    Compiling derivative v1.0.3
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking shared_library v0.1.9
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]     Checking rawpointer v0.1.0
[INFO] [stderr]     Checking lzw v0.10.0
[INFO] [stderr]     Checking matrixmultiply v0.2.2
[INFO] [stderr]     Checking euclid v0.19.9
[INFO] [stderr]     Checking osmesa-sys v0.1.2
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]     Checking alga v0.9.1
[INFO] [stderr]    Compiling serde_derive v1.0.100
[INFO] [stderr]     Checking rand v0.7.1
[INFO] [stderr]     Checking lyon_geom v0.12.7
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]     Checking gfx_core v0.9.1
[INFO] [stderr]     Checking lyon_path v0.13.2
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]     Checking slice-deque v0.2.4
[INFO] [stderr]     Checking ogg v0.7.0
[INFO] [stderr]     Checking color_quant v1.0.1
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]     Checking mint v0.5.1
[INFO] [stderr]     Checking xi-unicode v0.2.0
[INFO] [stderr]     Checking glyph_brush_layout v0.1.7
[INFO] [stderr]     Checking minimp3 v0.3.3
[INFO] [stderr]     Checking gif v0.10.2
[INFO] [stderr]     Checking tiff v0.3.1
[INFO] [stderr]     Checking png v0.15.0
[INFO] [stderr]     Checking nalgebra v0.18.1
[INFO] [stderr]     Checking lewton v0.9.4
[INFO] [stderr]     Checking lyon_tessellation v0.13.5
[INFO] [stderr]     Checking gfx_device_gl v0.16.2
[INFO] [stderr]     Checking lyon_algorithms v0.13.4
[INFO] [stderr]     Checking twox-hash v1.5.0
[INFO] [stderr]     Checking cpal v0.8.2
[INFO] [stderr]     Checking bzip2 v0.3.3
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking jpeg-decoder v0.1.16
[INFO] [stderr]     Checking claxon v0.4.2
[INFO] [stderr]     Checking gilrs-core v0.2.4
[INFO] [stderr]     Checking hound v3.4.0
[INFO] [stderr]     Checking podio v0.1.6
[INFO] [stderr]     Checking hashbrown v0.5.0
[INFO] [stderr]     Checking zip v0.5.3
[INFO] [stderr]     Checking gilrs v0.7.2
[INFO] [stderr]     Checking image v0.22.2
[INFO] [stderr]     Checking glyph_brush v0.5.3
[INFO] [stderr]     Checking directories v2.0.2
[INFO] [stderr]     Checking lyon v0.13.5
[INFO] [stderr]     Checking gfx v0.18.1
[INFO] [stderr]    Compiling smart-default v0.5.2
[INFO] [stderr]     Checking stretch v0.3.2
[INFO] [stderr]     Checking easer v0.2.1
[INFO] [stderr]    Compiling cargo_metadata v0.6.4
[INFO] [stderr]    Compiling skeptic v0.13.4
[INFO] [stderr]    Compiling ggez v0.5.1
[INFO] [stderr]     Checking toml v0.5.3
[INFO] [stderr]     Checking rodio v0.9.0
[INFO] [stderr]     Checking smithay-client-toolkit v0.4.6
[INFO] [stderr]     Checking winit v0.19.3
[INFO] [stderr]     Checking glutin v0.20.1
[INFO] [stderr]     Checking gfx_window_glutin v0.30.0
[INFO] [stderr]     Checking 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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `DrawMode`, `MeshBuilder`, and `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 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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `DrawMode`, `MeshBuilder`, and `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)]` (part of `#[warn(unused)]`) on by default
[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)]` (part of `#[warn(unused)]`) 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: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 `root` is never read
[INFO] [stdout]   --> src/game/board.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct Board {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] 13 |     matrix: [[Cell; 4]; 4],
[INFO] [stdout] 14 |     root: Rect,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `dump_board` is never used
[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 `safe_num` is never used
[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: struct `MoveOffset` is never constructed
[INFO] [stdout]  --> src/game/cell.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct MoveOffset {
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to `<[T; N] as IntoIterator>::into_iter` in Rust 2021
[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]    |                                                          ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout]    = note: `#[warn(array_into_iter)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 17 -     for x in [rect.x + radius, rect.x + rect.w - radius].into_iter() {
[INFO] [stdout] 17 +     for x in [rect.x + radius, rect.x + rect.w - radius].iter() {
[INFO] [stdout]    |
[INFO] [stdout] help: or remove `.into_iter()` to iterate by value
[INFO] [stdout]    |
[INFO] [stdout] 17 -     for x in [rect.x + radius, rect.x + rect.w - radius].into_iter() {
[INFO] [stdout] 17 +     for x in [rect.x + radius, rect.x + rect.w - radius] {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to `<[T; N] as IntoIterator>::into_iter` in Rust 2021
[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]    |                                                              ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 18 -         for y in [rect.y + radius, rect.y + rect.h - radius].into_iter() {
[INFO] [stdout] 18 +         for y in [rect.y + radius, rect.y + rect.h - radius].iter() {
[INFO] [stdout]    |
[INFO] [stdout] help: or remove `.into_iter()` to iterate by value
[INFO] [stdout]    |
[INFO] [stdout] 18 -         for y in [rect.y + radius, rect.y + rect.h - radius].into_iter() {
[INFO] [stdout] 18 +         for y in [rect.y + radius, rect.y + rect.h - radius] {
[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)]` (part of `#[warn(unused)]`) on by default
[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)]` (part of `#[warn(unused)]`) 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: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 `root` is never read
[INFO] [stdout]   --> src/game/board.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct Board {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] 13 |     matrix: [[Cell; 4]; 4],
[INFO] [stdout] 14 |     root: Rect,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `dump_board` is never used
[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 `safe_num` is never used
[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: struct `MoveOffset` is never constructed
[INFO] [stdout]  --> src/game/cell.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct MoveOffset {
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to `<[T; N] as IntoIterator>::into_iter` in Rust 2021
[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]    |                                                          ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout]    = note: `#[warn(array_into_iter)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 17 -     for x in [rect.x + radius, rect.x + rect.w - radius].into_iter() {
[INFO] [stdout] 17 +     for x in [rect.x + radius, rect.x + rect.w - radius].iter() {
[INFO] [stdout]    |
[INFO] [stdout] help: or remove `.into_iter()` to iterate by value
[INFO] [stdout]    |
[INFO] [stdout] 17 -     for x in [rect.x + radius, rect.x + rect.w - radius].into_iter() {
[INFO] [stdout] 17 +     for x in [rect.x + radius, rect.x + rect.w - radius] {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to `<[T; N] as IntoIterator>::into_iter` in Rust 2021
[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]    |                                                              ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 18 -         for y in [rect.y + radius, rect.y + rect.h - radius].into_iter() {
[INFO] [stdout] 18 +         for y in [rect.y + radius, rect.y + rect.h - radius].iter() {
[INFO] [stdout]    |
[INFO] [stdout] help: or remove `.into_iter()` to iterate by value
[INFO] [stdout]    |
[INFO] [stdout] 18 -         for y in [rect.y + radius, rect.y + rect.h - radius].into_iter() {
[INFO] [stdout] 18 +         for y in [rect.y + radius, rect.y + rect.h - radius] {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 39s
[INFO] running `Command { std: "docker" "inspect" "a9bd93dd0d128a1e8a46c622833ddd6a215688726a7aa6c9681159b1cf99420d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9bd93dd0d128a1e8a46c622833ddd6a215688726a7aa6c9681159b1cf99420d", kill_on_drop: false }`
[INFO] [stdout] a9bd93dd0d128a1e8a46c622833ddd6a215688726a7aa6c9681159b1cf99420d
