[INFO] updating cached repository bobrekjiri/rubic_cube_solver
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/bobrekjiri/rubic_cube_solver
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/bobrekjiri/rubic_cube_solver" "work/ex/beta-1.38-1/sources/1.37.0/gh/bobrekjiri/rubic_cube_solver"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/bobrekjiri/rubic_cube_solver'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/bobrekjiri/rubic_cube_solver" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/bobrekjiri/rubic_cube_solver"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/bobrekjiri/rubic_cube_solver'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d55d32d0c8a9a50b332f67863dfa289ba32e5ec0
[INFO] sha for GitHub repo bobrekjiri/rubic_cube_solver: d55d32d0c8a9a50b332f67863dfa289ba32e5ec0
[INFO] validating manifest of bobrekjiri/rubic_cube_solver on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of bobrekjiri/rubic_cube_solver on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing bobrekjiri/rubic_cube_solver
[INFO] finished frobbing bobrekjiri/rubic_cube_solver
[INFO] frobbed toml for bobrekjiri/rubic_cube_solver written to work/ex/beta-1.38-1/sources/1.37.0/gh/bobrekjiri/rubic_cube_solver/Cargo.toml
[INFO] started frobbing bobrekjiri/rubic_cube_solver
[INFO] finished frobbing bobrekjiri/rubic_cube_solver
[INFO] frobbed toml for bobrekjiri/rubic_cube_solver written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/bobrekjiri/rubic_cube_solver/Cargo.toml
[INFO] crate bobrekjiri/rubic_cube_solver already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing bobrekjiri/rubic_cube_solver against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/bobrekjiri/rubic_cube_solver:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] f99f51f55bef1184154e8166e4cd411193240c05c0e80627335c935b5fce5056
[INFO] running `"docker" "start" "-a" "f99f51f55bef1184154e8166e4cd411193240c05c0e80627335c935b5fce5056"`
[INFO] [stderr]    Compiling rubic_cube_solver v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: value assigned to `pointers` is never read
[INFO] [stderr]   --> src/side.rs:69:17
[INFO] [stderr]    |
[INFO] [stderr] 69 |         let mut pointers = (0,0,0);
[INFO] [stderr]    |                 ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_assignments)] on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/rubic_cube.rs:222:13
[INFO] [stderr]     |
[INFO] [stderr] 222 |         for i in 0..moves {
[INFO] [stderr]     |             ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Top`
[INFO] [stderr]  --> src/side.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     Top,
[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/side.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     Left,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Front`
[INFO] [stderr]  --> src/side.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     Front,
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Right`
[INFO] [stderr]  --> src/side.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     Right,
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Back`
[INFO] [stderr]  --> src/side.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     Back,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Bottom`
[INFO] [stderr]  --> src/side.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     Bottom
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Top`
[INFO] [stderr]   --> src/side.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     Top,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Left`
[INFO] [stderr]   --> src/side.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     Left,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Right`
[INFO] [stderr]   --> src/side.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     Right,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Bottom`
[INFO] [stderr]   --> src/side.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     Bottom
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Side`
[INFO] [stderr]   --> src/side.rs:21:1
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub struct Side {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/side.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     pub fn new(position: Sides, colors: [char; 9]) -> Side {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `print_side`
[INFO] [stderr]   --> src/side.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     pub fn print_side(&self, indentation: &String) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `print_row`
[INFO] [stderr]   --> src/side.rs:47:5
[INFO] [stderr]    |
[INFO] [stderr] 47 |     pub fn print_row(&self, indentation: &String, row: usize) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_edge`
[INFO] [stderr]   --> src/side.rs:55:5
[INFO] [stderr]    |
[INFO] [stderr] 55 |     pub fn get_edge(&self, edge: Edges) -> (char,char,char) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_edge`
[INFO] [stderr]   --> src/side.rs:65:5
[INFO] [stderr]    |
[INFO] [stderr] 65 |     pub fn set_edge(&self, edge: Edges, new_edge: (char,char,char), inverse: bool) -> Side {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `transform`
[INFO] [stderr]   --> src/side.rs:98:5
[INFO] [stderr]    |
[INFO] [stderr] 98 |     pub fn transform(&self,clockwise: bool) -> Side {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `RubicCube`
[INFO] [stderr]  --> src/rubic_cube.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub struct RubicCube {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `print`
[INFO] [stderr]   --> src/rubic_cube.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     pub fn print(&self) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `rotate_r_l`
[INFO] [stderr]   --> src/rubic_cube.rs:44:5
[INFO] [stderr]    |
[INFO] [stderr] 44 |     fn rotate_r_l(&mut self, inverse: bool, edge: side::Edges) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `rotate_left`
[INFO] [stderr]   --> src/rubic_cube.rs:68:5
[INFO] [stderr]    |
[INFO] [stderr] 68 |     pub fn rotate_left(&mut self, inverse: bool) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `rotate_right`
[INFO] [stderr]   --> src/rubic_cube.rs:74:5
[INFO] [stderr]    |
[INFO] [stderr] 74 |     pub fn rotate_right(&mut self, inverse: bool) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `rotate_f`
[INFO] [stderr]   --> src/rubic_cube.rs:81:5
[INFO] [stderr]    |
[INFO] [stderr] 81 |     fn rotate_f(&mut self, inverse: bool) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `rotate_b`
[INFO] [stderr]    --> src/rubic_cube.rs:106:5
[INFO] [stderr]     |
[INFO] [stderr] 106 |     fn rotate_b(&mut self, inverse: bool) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `rotate_front`
[INFO] [stderr]    --> src/rubic_cube.rs:129:5
[INFO] [stderr]     |
[INFO] [stderr] 129 |     pub fn rotate_front(&mut self, inverse: bool) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `rotate_back`
[INFO] [stderr]    --> src/rubic_cube.rs:135:5
[INFO] [stderr]     |
[INFO] [stderr] 135 |     pub fn rotate_back(&mut self, inverse: bool) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `rotate_u_d`
[INFO] [stderr]    --> src/rubic_cube.rs:142:5
[INFO] [stderr]     |
[INFO] [stderr] 142 |     fn rotate_u_d(&mut self, inverse: bool, edge: side::Edges) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `rotate_up`
[INFO] [stderr]    --> src/rubic_cube.rs:166:5
[INFO] [stderr]     |
[INFO] [stderr] 166 |     pub fn rotate_up(&mut self, inverse: bool) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `rotate_down`
[INFO] [stderr]    --> src/rubic_cube.rs:172:5
[INFO] [stderr]     |
[INFO] [stderr] 172 |     pub fn rotate_down(&mut self, inverse: bool) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `verify_command`
[INFO] [stderr]    --> src/rubic_cube.rs:177:5
[INFO] [stderr]     |
[INFO] [stderr] 177 |     fn verify_command(text: &str) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `execute`
[INFO] [stderr]    --> src/rubic_cube.rs:184:5
[INFO] [stderr]     |
[INFO] [stderr] 184 |     pub fn execute(&mut self, command: &str) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `shuffle`
[INFO] [stderr]    --> src/rubic_cube.rs:219:5
[INFO] [stderr]     |
[INFO] [stderr] 219 |     pub fn shuffle(&mut self, moves: i64) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `cube_test`
[INFO] [stderr]    --> src/rubic_cube.rs:248:1
[INFO] [stderr]     |
[INFO] [stderr] 248 | fn cube_test() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `rotate_test`
[INFO] [stderr]    --> src/rubic_cube.rs:263:1
[INFO] [stderr]     |
[INFO] [stderr] 263 | fn rotate_test() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `execute_test`
[INFO] [stderr]    --> src/rubic_cube.rs:313:1
[INFO] [stderr]     |
[INFO] [stderr] 313 | fn execute_test() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `shuffle_test`
[INFO] [stderr]    --> src/rubic_cube.rs:330:1
[INFO] [stderr]     |
[INFO] [stderr] 330 | fn shuffle_test() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.06s
[INFO] running `"docker" "inspect" "f99f51f55bef1184154e8166e4cd411193240c05c0e80627335c935b5fce5056"`
[INFO] running `"docker" "rm" "-f" "f99f51f55bef1184154e8166e4cd411193240c05c0e80627335c935b5fce5056"`
[INFO] [stdout] f99f51f55bef1184154e8166e4cd411193240c05c0e80627335c935b5fce5056
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/bobrekjiri/rubic_cube_solver:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] ef3799c24d6444ae3657f96c9f8aa46cc4aea012caa6b9d1ef31f395bf49357d
[INFO] running `"docker" "start" "-a" "ef3799c24d6444ae3657f96c9f8aa46cc4aea012caa6b9d1ef31f395bf49357d"`
[INFO] [stderr]    Compiling rubic_cube_solver v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: value assigned to `pointers` is never read
[INFO] [stderr]   --> src/side.rs:69:17
[INFO] [stderr]    |
[INFO] [stderr] 69 |         let mut pointers = (0,0,0);
[INFO] [stderr]    |                 ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_assignments)] on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/rubic_cube.rs:222:13
[INFO] [stderr]     |
[INFO] [stderr] 222 |         for i in 0..moves {
[INFO] [stderr]     |             ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Top`
[INFO] [stderr]  --> src/side.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     Top,
[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/side.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     Left,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Front`
[INFO] [stderr]  --> src/side.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     Front,
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Right`
[INFO] [stderr]  --> src/side.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     Right,
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Back`
[INFO] [stderr]  --> src/side.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     Back,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Bottom`
[INFO] [stderr]  --> src/side.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     Bottom
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Top`
[INFO] [stderr]   --> src/side.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     Top,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Left`
[INFO] [stderr]   --> src/side.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     Left,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Right`
[INFO] [stderr]   --> src/side.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     Right,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Bottom`
[INFO] [stderr]   --> src/side.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     Bottom
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Side`
[INFO] [stderr]   --> src/side.rs:21:1
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub struct Side {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/side.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     pub fn new(position: Sides, colors: [char; 9]) -> Side {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `print_side`
[INFO] [stderr]   --> src/side.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     pub fn print_side(&self, indentation: &String) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `print_row`
[INFO] [stderr]   --> src/side.rs:47:5
[INFO] [stderr]    |
[INFO] [stderr] 47 |     pub fn print_row(&self, indentation: &String, row: usize) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_edge`
[INFO] [stderr]   --> src/side.rs:55:5
[INFO] [stderr]    |
[INFO] [stderr] 55 |     pub fn get_edge(&self, edge: Edges) -> (char,char,char) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_edge`
[INFO] [stderr]   --> src/side.rs:65:5
[INFO] [stderr]    |
[INFO] [stderr] 65 |     pub fn set_edge(&self, edge: Edges, new_edge: (char,char,char), inverse: bool) -> Side {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `transform`
[INFO] [stderr]   --> src/side.rs:98:5
[INFO] [stderr]    |
[INFO] [stderr] 98 |     pub fn transform(&self,clockwise: bool) -> Side {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `RubicCube`
[INFO] [stderr]  --> src/rubic_cube.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub struct RubicCube {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `print`
[INFO] [stderr]   --> src/rubic_cube.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     pub fn print(&self) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `rotate_r_l`
[INFO] [stderr]   --> src/rubic_cube.rs:44:5
[INFO] [stderr]    |
[INFO] [stderr] 44 |     fn rotate_r_l(&mut self, inverse: bool, edge: side::Edges) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `rotate_left`
[INFO] [stderr]   --> src/rubic_cube.rs:68:5
[INFO] [stderr]    |
[INFO] [stderr] 68 |     pub fn rotate_left(&mut self, inverse: bool) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `rotate_right`
[INFO] [stderr]   --> src/rubic_cube.rs:74:5
[INFO] [stderr]    |
[INFO] [stderr] 74 |     pub fn rotate_right(&mut self, inverse: bool) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `rotate_f`
[INFO] [stderr]   --> src/rubic_cube.rs:81:5
[INFO] [stderr]    |
[INFO] [stderr] 81 |     fn rotate_f(&mut self, inverse: bool) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `rotate_b`
[INFO] [stderr]    --> src/rubic_cube.rs:106:5
[INFO] [stderr]     |
[INFO] [stderr] 106 |     fn rotate_b(&mut self, inverse: bool) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `rotate_front`
[INFO] [stderr]    --> src/rubic_cube.rs:129:5
[INFO] [stderr]     |
[INFO] [stderr] 129 |     pub fn rotate_front(&mut self, inverse: bool) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `rotate_back`
[INFO] [stderr]    --> src/rubic_cube.rs:135:5
[INFO] [stderr]     |
[INFO] [stderr] 135 |     pub fn rotate_back(&mut self, inverse: bool) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `rotate_u_d`
[INFO] [stderr]    --> src/rubic_cube.rs:142:5
[INFO] [stderr]     |
[INFO] [stderr] 142 |     fn rotate_u_d(&mut self, inverse: bool, edge: side::Edges) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `rotate_up`
[INFO] [stderr]    --> src/rubic_cube.rs:166:5
[INFO] [stderr]     |
[INFO] [stderr] 166 |     pub fn rotate_up(&mut self, inverse: bool) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `rotate_down`
[INFO] [stderr]    --> src/rubic_cube.rs:172:5
[INFO] [stderr]     |
[INFO] [stderr] 172 |     pub fn rotate_down(&mut self, inverse: bool) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `verify_command`
[INFO] [stderr]    --> src/rubic_cube.rs:177:5
[INFO] [stderr]     |
[INFO] [stderr] 177 |     fn verify_command(text: &str) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `execute`
[INFO] [stderr]    --> src/rubic_cube.rs:184:5
[INFO] [stderr]     |
[INFO] [stderr] 184 |     pub fn execute(&mut self, command: &str) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `shuffle`
[INFO] [stderr]    --> src/rubic_cube.rs:219:5
[INFO] [stderr]     |
[INFO] [stderr] 219 |     pub fn shuffle(&mut self, moves: i64) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `cube_test`
[INFO] [stderr]    --> src/rubic_cube.rs:248:1
[INFO] [stderr]     |
[INFO] [stderr] 248 | fn cube_test() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `rotate_test`
[INFO] [stderr]    --> src/rubic_cube.rs:263:1
[INFO] [stderr]     |
[INFO] [stderr] 263 | fn rotate_test() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `execute_test`
[INFO] [stderr]    --> src/rubic_cube.rs:313:1
[INFO] [stderr]     |
[INFO] [stderr] 313 | fn execute_test() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `shuffle_test`
[INFO] [stderr]    --> src/rubic_cube.rs:330:1
[INFO] [stderr]     |
[INFO] [stderr] 330 | fn shuffle_test() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.74s
[INFO] running `"docker" "inspect" "ef3799c24d6444ae3657f96c9f8aa46cc4aea012caa6b9d1ef31f395bf49357d"`
[INFO] running `"docker" "rm" "-f" "ef3799c24d6444ae3657f96c9f8aa46cc4aea012caa6b9d1ef31f395bf49357d"`
[INFO] [stdout] ef3799c24d6444ae3657f96c9f8aa46cc4aea012caa6b9d1ef31f395bf49357d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/bobrekjiri/rubic_cube_solver:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 0865f4c1a05a27ffd458a89057bceefb1f977bcb8a259ad204bdd01e4affafe8
[INFO] running `"docker" "start" "-a" "0865f4c1a05a27ffd458a89057bceefb1f977bcb8a259ad204bdd01e4affafe8"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rubic_cube_solver-4e1b58f3f05ec10e
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "0865f4c1a05a27ffd458a89057bceefb1f977bcb8a259ad204bdd01e4affafe8"`
[INFO] running `"docker" "rm" "-f" "0865f4c1a05a27ffd458a89057bceefb1f977bcb8a259ad204bdd01e4affafe8"`
[INFO] [stdout] 0865f4c1a05a27ffd458a89057bceefb1f977bcb8a259ad204bdd01e4affafe8