[INFO] updating cached repository https://github.com/tylersouthwick/rubiks
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ca66f98fec4f5805faa6a074d02af80e40919e69
[INFO] checking tylersouthwick/rubiks against try#f149601db42efe10ece8b284ab681fd4a6fcb89c for pr-68766
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftylersouthwick%2Frubiks" "/workspace/builds/worker-3/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tylersouthwick/rubiks on toolchain f149601db42efe10ece8b284ab681fd4a6fcb89c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+f149601db42efe10ece8b284ab681fd4a6fcb89c" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/tylersouthwick/rubiks
[INFO] finished tweaking git repo https://github.com/tylersouthwick/rubiks
[INFO] tweaked toml for git repo https://github.com/tylersouthwick/rubiks written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/tylersouthwick/rubiks already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+f149601db42efe10ece8b284ab681fd4a6fcb89c" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+f149601db42efe10ece8b284ab681fd4a6fcb89c" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 25c5cb8c702b3db7d7f09294efab6d5e11507f49acac688648626354aa7a1a4b
[INFO] running `"docker" "start" "-a" "25c5cb8c702b3db7d7f09294efab6d5e11507f49acac688648626354aa7a1a4b"`
[INFO] [stderr]     Checking rubiks v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let mut cube = array_cube::ArrayCube::default();//random();
[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: variant is never constructed: `RIGHT`
[INFO] [stderr]   --> src/cube.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 |     RIGHT,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `LEFT`
[INFO] [stderr]   --> src/cube.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     LEFT,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `BACK`
[INFO] [stderr]   --> src/cube.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     BACK,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `DOWN`
[INFO] [stderr]   --> src/cube.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 38 |     DOWN,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `FRONT`
[INFO] [stderr]   --> src/cube.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     FRONT,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `UP`
[INFO] [stderr]   --> src/cube.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 |     UP,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `fromIndex`
[INFO] [stderr]   --> src/cube.rs:44:5
[INFO] [stderr]    |
[INFO] [stderr] 44 |     pub fn fromIndex(i : usize) -> FaceOrientation {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `RIGHT`
[INFO] [stderr]   --> src/cube.rs:58:5
[INFO] [stderr]    |
[INFO] [stderr] 58 |     RIGHT,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `LEFT`
[INFO] [stderr]   --> src/cube.rs:59:5
[INFO] [stderr]    |
[INFO] [stderr] 59 |     LEFT,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `DOWN`
[INFO] [stderr]   --> src/cube.rs:60:5
[INFO] [stderr]    |
[INFO] [stderr] 60 |     DOWN,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `UP`
[INFO] [stderr]   --> src/cube.rs:61:5
[INFO] [stderr]    |
[INFO] [stderr] 61 |     UP,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `rotate_left`
[INFO] [stderr]   --> src/array_cube.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     fn rotate_left(&mut self) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `rotate_right`
[INFO] [stderr]   --> src/array_cube.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     fn rotate_right(&mut self) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `random`
[INFO] [stderr]    --> src/array_cube.rs:101:5
[INFO] [stderr]     |
[INFO] [stderr] 101 |     pub fn random() -> Self {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `find_face`
[INFO] [stderr]    --> src/array_cube.rs:115:5
[INFO] [stderr]     |
[INFO] [stderr] 115 |     fn find_face(self, face_orientation : FaceOrientation) -> ArrayFace {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `find_adjacent_edge_piece`
[INFO] [stderr]    --> src/array_cube.rs:126:5
[INFO] [stderr]     |
[INFO] [stderr] 126 |     fn find_adjacent_edge_piece(self, face_orientation : FaceOrientation, x : usize, y : usize) -> EdgePiece {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `find_edge`
[INFO] [stderr]    --> src/array_cube.rs:144:5
[INFO] [stderr]     |
[INFO] [stderr] 144 |     pub fn find_edge(self, color1 : Color, color2 : Color) -> Edge {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `orientation_rotate_right`
[INFO] [stderr]    --> src/array_cube.rs:167:5
[INFO] [stderr]     |
[INFO] [stderr] 167 |     pub fn orientation_rotate_right(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `orientation_rotate_left`
[INFO] [stderr]    --> src/array_cube.rs:182:5
[INFO] [stderr]     |
[INFO] [stderr] 182 |     pub fn orientation_rotate_left(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `orientation_rotate_up`
[INFO] [stderr]    --> src/array_cube.rs:188:5
[INFO] [stderr]     |
[INFO] [stderr] 188 |     pub fn orientation_rotate_up(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `orientation_rotate_down`
[INFO] [stderr]    --> src/array_cube.rs:206:5
[INFO] [stderr]     |
[INFO] [stderr] 206 |     pub fn orientation_rotate_down(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `rotate_left`
[INFO] [stderr]    --> src/array_cube.rs:212:5
[INFO] [stderr]     |
[INFO] [stderr] 212 |     pub fn rotate_left(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `rotate_right`
[INFO] [stderr]    --> src/array_cube.rs:218:5
[INFO] [stderr]     |
[INFO] [stderr] 218 |     pub fn rotate_right(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `move_f`
[INFO] [stderr]    --> src/array_cube.rs:260:5
[INFO] [stderr]     |
[INFO] [stderr] 260 |     pub fn move_f(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `move_fi`
[INFO] [stderr]    --> src/array_cube.rs:305:5
[INFO] [stderr]     |
[INFO] [stderr] 305 |     pub fn move_fi(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `move_u`
[INFO] [stderr]    --> src/array_cube.rs:311:5
[INFO] [stderr]     |
[INFO] [stderr] 311 |     pub fn move_u(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `move_d`
[INFO] [stderr]    --> src/array_cube.rs:313:5
[INFO] [stderr]     |
[INFO] [stderr] 313 |     pub fn move_d(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `move_b`
[INFO] [stderr]    --> src/array_cube.rs:315:5
[INFO] [stderr]     |
[INFO] [stderr] 315 |     pub fn move_b(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `move_l`
[INFO] [stderr]    --> src/array_cube.rs:317:5
[INFO] [stderr]     |
[INFO] [stderr] 317 |     pub fn move_l(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `move_r`
[INFO] [stderr]    --> src/array_cube.rs:320:5
[INFO] [stderr]     |
[INFO] [stderr] 320 |     pub fn move_r(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `move_ri`
[INFO] [stderr]    --> src/array_cube.rs:365:5
[INFO] [stderr]     |
[INFO] [stderr] 365 |     pub fn move_ri(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `twist`
[INFO] [stderr]    --> src/array_cube.rs:371:5
[INFO] [stderr]     |
[INFO] [stderr] 371 |     pub fn twist(&mut self, face_orientation : FaceOrientation) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `rotate`
[INFO] [stderr]    --> src/array_cube.rs:382:5
[INFO] [stderr]     |
[INFO] [stderr] 382 |     pub fn rotate(&mut self, rotation_direction : RotationDirection) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `findFace`
[INFO] [stderr]    --> src/array_cube.rs:391:5
[INFO] [stderr]     |
[INFO] [stderr] 391 |     pub fn findFace(self, faceOrientation : FaceOrientation) -> Color {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `findCenter`
[INFO] [stderr]    --> src/array_cube.rs:402:5
[INFO] [stderr]     |
[INFO] [stderr] 402 |     pub fn findCenter(self, color : Color) -> FaceOrientation {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `print`
[INFO] [stderr]    --> src/array_cube.rs:412:5
[INFO] [stderr]     |
[INFO] [stderr] 412 |     pub fn print(&self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `move_top_cross_edge`
[INFO] [stderr]  --> src/solver.rs:7:4
[INFO] [stderr]   |
[INFO] [stderr] 7 | fn move_top_cross_edge(cube : &mut ArrayCube, color1 : Color, color2 : Color) {
[INFO] [stderr]   |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `top_cross`
[INFO] [stderr]   --> src/solver.rs:12:4
[INFO] [stderr]    |
[INFO] [stderr] 12 | fn top_cross(cube : &mut ArrayCube) {
[INFO] [stderr]    |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve`
[INFO] [stderr]   --> src/solver.rs:20:8
[INFO] [stderr]    |
[INFO] [stderr] 20 | pub fn solve(cube : &mut ArrayCube) {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `orient_cube`
[INFO] [stderr]  --> src/mover.rs:6:8
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn orient_cube(cube : &mut ArrayCube, face_orientation : FaceOrientation, color : Color) {
[INFO] [stderr]   |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `fromIndex` should have a snake case name
[INFO] [stderr]   --> src/cube.rs:44:12
[INFO] [stderr]    |
[INFO] [stderr] 44 |     pub fn fromIndex(i : usize) -> FaceOrientation {
[INFO] [stderr]    |            ^^^^^^^^^ help: convert the identifier to snake case: `from_index`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method `findFace` should have a snake case name
[INFO] [stderr]    --> src/array_cube.rs:391:12
[INFO] [stderr]     |
[INFO] [stderr] 391 |     pub fn findFace(self, faceOrientation : FaceOrientation) -> Color {
[INFO] [stderr]     |            ^^^^^^^^ help: convert the identifier to snake case: `find_face`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `faceOrientation` should have a snake case name
[INFO] [stderr]    --> src/array_cube.rs:391:27
[INFO] [stderr]     |
[INFO] [stderr] 391 |     pub fn findFace(self, faceOrientation : FaceOrientation) -> Color {
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `face_orientation`
[INFO] [stderr] 
[INFO] [stderr] warning: method `findCenter` should have a snake case name
[INFO] [stderr]    --> src/array_cube.rs:402:12
[INFO] [stderr]     |
[INFO] [stderr] 402 |     pub fn findCenter(self, color : Color) -> FaceOrientation {
[INFO] [stderr]     |            ^^^^^^^^^^ help: convert the identifier to snake case: `find_center`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let mut cube = array_cube::ArrayCube::default();//random();
[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: variant is never constructed: `RIGHT`
[INFO] [stderr]   --> src/cube.rs:58:5
[INFO] [stderr]    |
[INFO] [stderr] 58 |     RIGHT,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `LEFT`
[INFO] [stderr]   --> src/cube.rs:59:5
[INFO] [stderr]    |
[INFO] [stderr] 59 |     LEFT,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `DOWN`
[INFO] [stderr]   --> src/cube.rs:60:5
[INFO] [stderr]    |
[INFO] [stderr] 60 |     DOWN,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `UP`
[INFO] [stderr]   --> src/cube.rs:61:5
[INFO] [stderr]    |
[INFO] [stderr] 61 |     UP,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `random`
[INFO] [stderr]    --> src/array_cube.rs:101:5
[INFO] [stderr]     |
[INFO] [stderr] 101 |     pub fn random() -> Self {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `rotate_left`
[INFO] [stderr]    --> src/array_cube.rs:212:5
[INFO] [stderr]     |
[INFO] [stderr] 212 |     pub fn rotate_left(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `move_u`
[INFO] [stderr]    --> src/array_cube.rs:311:5
[INFO] [stderr]     |
[INFO] [stderr] 311 |     pub fn move_u(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `move_d`
[INFO] [stderr]    --> src/array_cube.rs:313:5
[INFO] [stderr]     |
[INFO] [stderr] 313 |     pub fn move_d(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `move_b`
[INFO] [stderr]    --> src/array_cube.rs:315:5
[INFO] [stderr]     |
[INFO] [stderr] 315 |     pub fn move_b(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `move_l`
[INFO] [stderr]    --> src/array_cube.rs:317:5
[INFO] [stderr]     |
[INFO] [stderr] 317 |     pub fn move_l(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `twist`
[INFO] [stderr]    --> src/array_cube.rs:371:5
[INFO] [stderr]     |
[INFO] [stderr] 371 |     pub fn twist(&mut self, face_orientation : FaceOrientation) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `rotate`
[INFO] [stderr]    --> src/array_cube.rs:382:5
[INFO] [stderr]     |
[INFO] [stderr] 382 |     pub fn rotate(&mut self, rotation_direction : RotationDirection) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `move_top_cross_edge`
[INFO] [stderr]  --> src/solver.rs:7:4
[INFO] [stderr]   |
[INFO] [stderr] 7 | fn move_top_cross_edge(cube : &mut ArrayCube, color1 : Color, color2 : Color) {
[INFO] [stderr]   |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `top_cross`
[INFO] [stderr]   --> src/solver.rs:12:4
[INFO] [stderr]    |
[INFO] [stderr] 12 | fn top_cross(cube : &mut ArrayCube) {
[INFO] [stderr]    |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve`
[INFO] [stderr]   --> src/solver.rs:20:8
[INFO] [stderr]    |
[INFO] [stderr] 20 | pub fn solve(cube : &mut ArrayCube) {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `fromIndex` should have a snake case name
[INFO] [stderr]   --> src/cube.rs:44:12
[INFO] [stderr]    |
[INFO] [stderr] 44 |     pub fn fromIndex(i : usize) -> FaceOrientation {
[INFO] [stderr]    |            ^^^^^^^^^ help: convert the identifier to snake case: `from_index`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method `findFace` should have a snake case name
[INFO] [stderr]    --> src/array_cube.rs:391:12
[INFO] [stderr]     |
[INFO] [stderr] 391 |     pub fn findFace(self, faceOrientation : FaceOrientation) -> Color {
[INFO] [stderr]     |            ^^^^^^^^ help: convert the identifier to snake case: `find_face`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `faceOrientation` should have a snake case name
[INFO] [stderr]    --> src/array_cube.rs:391:27
[INFO] [stderr]     |
[INFO] [stderr] 391 |     pub fn findFace(self, faceOrientation : FaceOrientation) -> Color {
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `face_orientation`
[INFO] [stderr] 
[INFO] [stderr] warning: method `findCenter` should have a snake case name
[INFO] [stderr]    --> src/array_cube.rs:402:12
[INFO] [stderr]     |
[INFO] [stderr] 402 |     pub fn findCenter(self, color : Color) -> FaceOrientation {
[INFO] [stderr]     |            ^^^^^^^^^^ help: convert the identifier to snake case: `find_center`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.28s
[INFO] running `"docker" "inspect" "25c5cb8c702b3db7d7f09294efab6d5e11507f49acac688648626354aa7a1a4b"`
[INFO] running `"docker" "rm" "-f" "25c5cb8c702b3db7d7f09294efab6d5e11507f49acac688648626354aa7a1a4b"`
[INFO] [stdout] 25c5cb8c702b3db7d7f09294efab6d5e11507f49acac688648626354aa7a1a4b