Dec 19 08:55:43.901 INFO checking shinkwhek/rs2048 against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 08:55:43.901 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-1/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/shinkwhek/rs2048:/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=forbid" "-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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 08:55:44.339 INFO [stdout] 28e2dba88b93c20bbfefb91028ef78277e967f19c608c905b2b4da0850a197bc
Dec 19 08:55:44.341 INFO running `"docker" "start" "-a" "28e2dba88b93c20bbfefb91028ef78277e967f19c608c905b2b4da0850a197bc"`
Dec 19 08:55:46.431 INFO [stderr]     Checking atty v0.2.8
Dec 19 08:55:46.432 INFO [stderr]     Checking nix v0.5.1
Dec 19 08:55:46.904 INFO [stderr]     Checking clap v2.31.1
Dec 19 08:55:50.664 INFO [stderr]     Checking rustyline v1.0.0
Dec 19 08:55:52.244 INFO [stderr]     Checking rs2048 v0.1.0 (/opt/crater/workdir)
Dec 19 08:55:52.585 INFO [stderr] warning: variant is never constructed: `Nothing`
Dec 19 08:55:52.585 INFO [stderr]   --> src/board.rs:13:5
Dec 19 08:55:52.585 INFO [stderr]    |
Dec 19 08:55:52.585 INFO [stderr] 13 |     Nothing,
Dec 19 08:55:52.585 INFO [stderr]    |     ^^^^^^^
Dec 19 08:55:52.585 INFO [stderr]    |
Dec 19 08:55:52.585 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 19 08:55:52.585 INFO [stderr] 
Dec 19 08:55:52.585 INFO [stderr] warning: variant is never constructed: `Exist`
Dec 19 08:55:52.585 INFO [stderr]   --> src/board.rs:14:5
Dec 19 08:55:52.585 INFO [stderr]    |
Dec 19 08:55:52.585 INFO [stderr] 14 |     Exist,
Dec 19 08:55:52.585 INFO [stderr]    |     ^^^^^
Dec 19 08:55:52.585 INFO [stderr] 
Dec 19 08:55:52.585 INFO [stderr] warning: method is never used: `new`
Dec 19 08:55:52.585 INFO [stderr]   --> src/board.rs:24:5
Dec 19 08:55:52.585 INFO [stderr]    |
Dec 19 08:55:52.585 INFO [stderr] 24 |     pub fn new(score: usize, status: Status) -> Tile {
Dec 19 08:55:52.585 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:55:52.585 INFO [stderr] 
Dec 19 08:55:52.585 INFO [stderr] warning: method is never used: `get_score`
Dec 19 08:55:52.585 INFO [stderr]   --> src/board.rs:31:5
Dec 19 08:55:52.585 INFO [stderr]    |
Dec 19 08:55:52.585 INFO [stderr] 31 |     pub fn get_score(&self) -> usize {
Dec 19 08:55:52.585 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:55:52.585 INFO [stderr] 
Dec 19 08:55:52.586 INFO [stderr] warning: method is never used: `is_exist`
Dec 19 08:55:52.586 INFO [stderr]   --> src/board.rs:35:5
Dec 19 08:55:52.586 INFO [stderr]    |
Dec 19 08:55:52.586 INFO [stderr] 35 |     pub fn is_exist(&self) -> bool {
Dec 19 08:55:52.586 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:55:52.586 INFO [stderr] 
Dec 19 08:55:52.586 INFO [stderr] warning: method is never used: `is_nothing`
Dec 19 08:55:52.586 INFO [stderr]   --> src/board.rs:39:5
Dec 19 08:55:52.586 INFO [stderr]    |
Dec 19 08:55:52.586 INFO [stderr] 39 |     pub fn is_nothing(&self) -> bool {
Dec 19 08:55:52.586 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:55:52.586 INFO [stderr] 
Dec 19 08:55:52.586 INFO [stderr] warning: struct is never constructed: `Board`
Dec 19 08:55:52.586 INFO [stderr]   --> src/board.rs:44:1
Dec 19 08:55:52.586 INFO [stderr]    |
Dec 19 08:55:52.586 INFO [stderr] 44 | pub struct Board {
Dec 19 08:55:52.586 INFO [stderr]    | ^^^^^^^^^^^^^^^^
Dec 19 08:55:52.586 INFO [stderr] 
Dec 19 08:55:52.586 INFO [stderr] warning: method is never used: `new`
Dec 19 08:55:52.586 INFO [stderr]   --> src/board.rs:50:5
Dec 19 08:55:52.586 INFO [stderr]    |
Dec 19 08:55:52.586 INFO [stderr] 50 |     pub fn new() -> Board {
Dec 19 08:55:52.586 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:55:52.586 INFO [stderr] 
Dec 19 08:55:52.586 INFO [stderr] warning: method is never used: `gen`
Dec 19 08:55:52.586 INFO [stderr]   --> src/board.rs:61:5
Dec 19 08:55:52.586 INFO [stderr]    |
Dec 19 08:55:52.586 INFO [stderr] 61 |     pub fn gen(&mut self) {
Dec 19 08:55:52.586 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:55:52.586 INFO [stderr] 
Dec 19 08:55:52.586 INFO [stderr] warning: method is never used: `color`
Dec 19 08:55:52.586 INFO [stderr]   --> src/board.rs:72:5
Dec 19 08:55:52.586 INFO [stderr]    |
Dec 19 08:55:52.586 INFO [stderr] 72 |     fn color(n: usize) -> Colour {
Dec 19 08:55:52.586 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:55:52.586 INFO [stderr] 
Dec 19 08:55:52.586 INFO [stderr] warning: method is never used: `format_line`
Dec 19 08:55:52.586 INFO [stderr]   --> src/board.rs:89:5
Dec 19 08:55:52.586 INFO [stderr]    |
Dec 19 08:55:52.586 INFO [stderr] 89 |     fn format_line(&self, n: usize, t: Option<usize>) -> String {
Dec 19 08:55:52.586 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:55:52.586 INFO [stderr] 
Dec 19 08:55:52.586 INFO [stderr] warning: method is never used: `render`
Dec 19 08:55:52.586 INFO [stderr]    --> src/board.rs:118:5
Dec 19 08:55:52.586 INFO [stderr]     |
Dec 19 08:55:52.586 INFO [stderr] 118 |     pub fn render(&self) {
Dec 19 08:55:52.586 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^
Dec 19 08:55:52.586 INFO [stderr] 
Dec 19 08:55:52.586 INFO [stderr] warning: method is never used: `get_tile`
Dec 19 08:55:52.586 INFO [stderr]    --> src/board.rs:171:5
Dec 19 08:55:52.586 INFO [stderr]     |
Dec 19 08:55:52.586 INFO [stderr] 171 |     pub fn get_tile(&self, n: usize) -> Option<&Tile> {
Dec 19 08:55:52.586 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:55:52.586 INFO [stderr] 
Dec 19 08:55:52.586 INFO [stderr] warning: method is never used: `get_score`
Dec 19 08:55:52.586 INFO [stderr]    --> src/board.rs:178:5
Dec 19 08:55:52.586 INFO [stderr]     |
Dec 19 08:55:52.586 INFO [stderr] 178 |     fn get_score(&self) -> usize {
Dec 19 08:55:52.586 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:55:52.586 INFO [stderr] 
Dec 19 08:55:52.586 INFO [stderr] warning: method is never used: `sum_score`
Dec 19 08:55:52.586 INFO [stderr]    --> src/board.rs:182:5
Dec 19 08:55:52.586 INFO [stderr]     |
Dec 19 08:55:52.586 INFO [stderr] 182 |     fn sum_score(&mut self) {
Dec 19 08:55:52.586 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:55:52.586 INFO [stderr] 
Dec 19 08:55:52.586 INFO [stderr] warning: method is never used: `render_parameter_box`
Dec 19 08:55:52.586 INFO [stderr]    --> src/board.rs:191:5
Dec 19 08:55:52.586 INFO [stderr]     |
Dec 19 08:55:52.586 INFO [stderr] 191 |     pub fn render_parameter_box(&mut self) {
Dec 19 08:55:52.586 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:55:52.586 INFO [stderr] 
Dec 19 08:55:52.586 INFO [stderr] warning: method is never used: `fin`
Dec 19 08:55:52.586 INFO [stderr]    --> src/board.rs:216:5
Dec 19 08:55:52.586 INFO [stderr]     |
Dec 19 08:55:52.586 INFO [stderr] 216 |     pub fn fin(&mut self) -> bool {
Dec 19 08:55:52.586 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:55:52.586 INFO [stderr] 
Dec 19 08:55:52.586 INFO [stderr] warning: struct is never constructed: `Update`
Dec 19 08:55:52.586 INFO [stderr]  --> src/app.rs:7:1
Dec 19 08:55:52.586 INFO [stderr]   |
Dec 19 08:55:52.586 INFO [stderr] 7 | pub struct Update();
Dec 19 08:55:52.586 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^
Dec 19 08:55:52.586 INFO [stderr] 
Dec 19 08:55:52.586 INFO [stderr] warning: method is never used: `update`
Dec 19 08:55:52.586 INFO [stderr]   --> src/app.rs:10:5
Dec 19 08:55:52.587 INFO [stderr]    |
Dec 19 08:55:52.587 INFO [stderr] 10 |     pub fn update(board: &mut board::Board) {
Dec 19 08:55:52.587 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:55:52.587 INFO [stderr] 
Dec 19 08:55:52.587 INFO [stderr] warning: method is never used: `up`
Dec 19 08:55:52.587 INFO [stderr]   --> src/app.rs:58:5
Dec 19 08:55:52.587 INFO [stderr]    |
Dec 19 08:55:52.587 INFO [stderr] 58 |     pub fn up(board: &mut board::Board) -> bool {
Dec 19 08:55:52.587 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:55:52.587 INFO [stderr] 
Dec 19 08:55:52.587 INFO [stderr] warning: method is never used: `down`
Dec 19 08:55:52.587 INFO [stderr]   --> src/app.rs:89:5
Dec 19 08:55:52.587 INFO [stderr]    |
Dec 19 08:55:52.587 INFO [stderr] 89 |     pub fn down(board: &mut board::Board) -> bool {
Dec 19 08:55:52.587 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:55:52.587 INFO [stderr] 
Dec 19 08:55:52.587 INFO [stderr] warning: method is never used: `left`
Dec 19 08:55:52.587 INFO [stderr]    --> src/app.rs:120:5
Dec 19 08:55:52.587 INFO [stderr]     |
Dec 19 08:55:52.587 INFO [stderr] 120 |     pub fn left(board: &mut board::Board) -> bool {
Dec 19 08:55:52.587 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:55:52.587 INFO [stderr] 
Dec 19 08:55:52.587 INFO [stderr] warning: method is never used: `right`
Dec 19 08:55:52.587 INFO [stderr]    --> src/app.rs:151:5
Dec 19 08:55:52.587 INFO [stderr]     |
Dec 19 08:55:52.587 INFO [stderr] 151 |     pub fn right(board: &mut board::Board) -> bool {
Dec 19 08:55:52.587 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:55:52.587 INFO [stderr] 
Dec 19 08:55:52.587 INFO [stderr] warning: method is never used: `is_finished`
Dec 19 08:55:52.587 INFO [stderr]    --> src/app.rs:182:5
Dec 19 08:55:52.587 INFO [stderr]     |
Dec 19 08:55:52.587 INFO [stderr] 182 |     pub fn is_finished(board: &board::Board) -> bool {
Dec 19 08:55:52.587 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:55:52.587 INFO [stderr] 
Dec 19 08:55:52.604 INFO [stderr] warning: variant is never constructed: `Nothing`
Dec 19 08:55:52.604 INFO [stderr]   --> src/board.rs:13:5
Dec 19 08:55:52.604 INFO [stderr]    |
Dec 19 08:55:52.604 INFO [stderr] 13 |     Nothing,
Dec 19 08:55:52.604 INFO [stderr]    |     ^^^^^^^
Dec 19 08:55:52.604 INFO [stderr]    |
Dec 19 08:55:52.604 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 19 08:55:52.604 INFO [stderr] 
Dec 19 08:55:52.604 INFO [stderr] warning: variant is never constructed: `Exist`
Dec 19 08:55:52.604 INFO [stderr]   --> src/board.rs:14:5
Dec 19 08:55:52.604 INFO [stderr]    |
Dec 19 08:55:52.604 INFO [stderr] 14 |     Exist,
Dec 19 08:55:52.604 INFO [stderr]    |     ^^^^^
Dec 19 08:55:52.604 INFO [stderr] 
Dec 19 08:55:52.604 INFO [stderr] warning: method is never used: `new`
Dec 19 08:55:52.604 INFO [stderr]   --> src/board.rs:24:5
Dec 19 08:55:52.604 INFO [stderr]    |
Dec 19 08:55:52.604 INFO [stderr] 24 |     pub fn new(score: usize, status: Status) -> Tile {
Dec 19 08:55:52.604 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:55:52.604 INFO [stderr] 
Dec 19 08:55:52.604 INFO [stderr] warning: method is never used: `get_score`
Dec 19 08:55:52.604 INFO [stderr]   --> src/board.rs:31:5
Dec 19 08:55:52.604 INFO [stderr]    |
Dec 19 08:55:52.604 INFO [stderr] 31 |     pub fn get_score(&self) -> usize {
Dec 19 08:55:52.604 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:55:52.604 INFO [stderr] 
Dec 19 08:55:52.609 INFO [stderr] warning: method is never used: `is_exist`
Dec 19 08:55:52.609 INFO [stderr]   --> src/board.rs:35:5
Dec 19 08:55:52.609 INFO [stderr]    |
Dec 19 08:55:52.609 INFO [stderr] 35 |     pub fn is_exist(&self) -> bool {
Dec 19 08:55:52.609 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:55:52.609 INFO [stderr] 
Dec 19 08:55:52.609 INFO [stderr] warning: method is never used: `is_nothing`
Dec 19 08:55:52.609 INFO [stderr]   --> src/board.rs:39:5
Dec 19 08:55:52.609 INFO [stderr]    |
Dec 19 08:55:52.609 INFO [stderr] 39 |     pub fn is_nothing(&self) -> bool {
Dec 19 08:55:52.609 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:55:52.609 INFO [stderr] 
Dec 19 08:55:52.609 INFO [stderr] warning: struct is never constructed: `Board`
Dec 19 08:55:52.609 INFO [stderr]   --> src/board.rs:44:1
Dec 19 08:55:52.609 INFO [stderr]    |
Dec 19 08:55:52.609 INFO [stderr] 44 | pub struct Board {
Dec 19 08:55:52.610 INFO [stderr]    | ^^^^^^^^^^^^^^^^
Dec 19 08:55:52.610 INFO [stderr] 
Dec 19 08:55:52.610 INFO [stderr] warning: method is never used: `new`
Dec 19 08:55:52.610 INFO [stderr]   --> src/board.rs:50:5
Dec 19 08:55:52.610 INFO [stderr]    |
Dec 19 08:55:52.610 INFO [stderr] 50 |     pub fn new() -> Board {
Dec 19 08:55:52.610 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:55:52.610 INFO [stderr] 
Dec 19 08:55:52.610 INFO [stderr] warning: method is never used: `gen`
Dec 19 08:55:52.610 INFO [stderr]   --> src/board.rs:61:5
Dec 19 08:55:52.610 INFO [stderr]    |
Dec 19 08:55:52.610 INFO [stderr] 61 |     pub fn gen(&mut self) {
Dec 19 08:55:52.610 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:55:52.610 INFO [stderr] 
Dec 19 08:55:52.610 INFO [stderr] warning: method is never used: `color`
Dec 19 08:55:52.610 INFO [stderr]   --> src/board.rs:72:5
Dec 19 08:55:52.610 INFO [stderr]    |
Dec 19 08:55:52.610 INFO [stderr] 72 |     fn color(n: usize) -> Colour {
Dec 19 08:55:52.610 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:55:52.610 INFO [stderr] 
Dec 19 08:55:52.610 INFO [stderr] warning: method is never used: `format_line`
Dec 19 08:55:52.610 INFO [stderr]   --> src/board.rs:89:5
Dec 19 08:55:52.610 INFO [stderr]    |
Dec 19 08:55:52.610 INFO [stderr] 89 |     fn format_line(&self, n: usize, t: Option<usize>) -> String {
Dec 19 08:55:52.610 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:55:52.610 INFO [stderr] 
Dec 19 08:55:52.610 INFO [stderr] warning: method is never used: `render`
Dec 19 08:55:52.610 INFO [stderr]    --> src/board.rs:118:5
Dec 19 08:55:52.610 INFO [stderr]     |
Dec 19 08:55:52.610 INFO [stderr] 118 |     pub fn render(&self) {
Dec 19 08:55:52.610 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^
Dec 19 08:55:52.610 INFO [stderr] 
Dec 19 08:55:52.610 INFO [stderr] warning: method is never used: `get_tile`
Dec 19 08:55:52.610 INFO [stderr]    --> src/board.rs:171:5
Dec 19 08:55:52.610 INFO [stderr]     |
Dec 19 08:55:52.610 INFO [stderr] 171 |     pub fn get_tile(&self, n: usize) -> Option<&Tile> {
Dec 19 08:55:52.610 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:55:52.610 INFO [stderr] 
Dec 19 08:55:52.610 INFO [stderr] warning: method is never used: `get_score`
Dec 19 08:55:52.610 INFO [stderr]    --> src/board.rs:178:5
Dec 19 08:55:52.610 INFO [stderr]     |
Dec 19 08:55:52.610 INFO [stderr] 178 |     fn get_score(&self) -> usize {
Dec 19 08:55:52.610 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:55:52.610 INFO [stderr] 
Dec 19 08:55:52.610 INFO [stderr] warning: method is never used: `sum_score`
Dec 19 08:55:52.610 INFO [stderr]    --> src/board.rs:182:5
Dec 19 08:55:52.610 INFO [stderr]     |
Dec 19 08:55:52.610 INFO [stderr] 182 |     fn sum_score(&mut self) {
Dec 19 08:55:52.610 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:55:52.610 INFO [stderr] 
Dec 19 08:55:52.610 INFO [stderr] warning: method is never used: `render_parameter_box`
Dec 19 08:55:52.610 INFO [stderr]    --> src/board.rs:191:5
Dec 19 08:55:52.610 INFO [stderr]     |
Dec 19 08:55:52.610 INFO [stderr] 191 |     pub fn render_parameter_box(&mut self) {
Dec 19 08:55:52.610 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:55:52.610 INFO [stderr] 
Dec 19 08:55:52.610 INFO [stderr] warning: method is never used: `fin`
Dec 19 08:55:52.610 INFO [stderr]    --> src/board.rs:216:5
Dec 19 08:55:52.610 INFO [stderr]     |
Dec 19 08:55:52.610 INFO [stderr] 216 |     pub fn fin(&mut self) -> bool {
Dec 19 08:55:52.610 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:55:52.610 INFO [stderr] 
Dec 19 08:55:52.610 INFO [stderr] warning: struct is never constructed: `Update`
Dec 19 08:55:52.610 INFO [stderr]  --> src/app.rs:7:1
Dec 19 08:55:52.610 INFO [stderr]   |
Dec 19 08:55:52.610 INFO [stderr] 7 | pub struct Update();
Dec 19 08:55:52.610 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^
Dec 19 08:55:52.610 INFO [stderr] 
Dec 19 08:55:52.610 INFO [stderr] warning: method is never used: `update`
Dec 19 08:55:52.610 INFO [stderr]   --> src/app.rs:10:5
Dec 19 08:55:52.610 INFO [stderr]    |
Dec 19 08:55:52.610 INFO [stderr] 10 |     pub fn update(board: &mut board::Board) {
Dec 19 08:55:52.610 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:55:52.610 INFO [stderr] 
Dec 19 08:55:52.610 INFO [stderr] warning: method is never used: `up`
Dec 19 08:55:52.610 INFO [stderr]   --> src/app.rs:58:5
Dec 19 08:55:52.610 INFO [stderr]    |
Dec 19 08:55:52.610 INFO [stderr] 58 |     pub fn up(board: &mut board::Board) -> bool {
Dec 19 08:55:52.610 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:55:52.610 INFO [stderr] 
Dec 19 08:55:52.610 INFO [stderr] warning: method is never used: `down`
Dec 19 08:55:52.610 INFO [stderr]   --> src/app.rs:89:5
Dec 19 08:55:52.610 INFO [stderr]    |
Dec 19 08:55:52.610 INFO [stderr] 89 |     pub fn down(board: &mut board::Board) -> bool {
Dec 19 08:55:52.610 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:55:52.610 INFO [stderr] 
Dec 19 08:55:52.610 INFO [stderr] warning: method is never used: `left`
Dec 19 08:55:52.610 INFO [stderr]    --> src/app.rs:120:5
Dec 19 08:55:52.611 INFO [stderr]     |
Dec 19 08:55:52.611 INFO [stderr] 120 |     pub fn left(board: &mut board::Board) -> bool {
Dec 19 08:55:52.611 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:55:52.611 INFO [stderr] 
Dec 19 08:55:52.611 INFO [stderr] warning: method is never used: `right`
Dec 19 08:55:52.611 INFO [stderr]    --> src/app.rs:151:5
Dec 19 08:55:52.611 INFO [stderr]     |
Dec 19 08:55:52.611 INFO [stderr] 151 |     pub fn right(board: &mut board::Board) -> bool {
Dec 19 08:55:52.611 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:55:52.611 INFO [stderr] 
Dec 19 08:55:52.611 INFO [stderr] warning: method is never used: `is_finished`
Dec 19 08:55:52.611 INFO [stderr]    --> src/app.rs:182:5
Dec 19 08:55:52.611 INFO [stderr]     |
Dec 19 08:55:52.611 INFO [stderr] 182 |     pub fn is_finished(board: &board::Board) -> bool {
Dec 19 08:55:52.611 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:55:52.611 INFO [stderr] 
Dec 19 08:55:53.064 INFO [stderr] warning: method is never used: `is_nothing`
Dec 19 08:55:53.064 INFO [stderr]   --> src/board.rs:39:5
Dec 19 08:55:53.064 INFO [stderr]    |
Dec 19 08:55:53.064 INFO [stderr] 39 |     pub fn is_nothing(&self) -> bool {
Dec 19 08:55:53.064 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:55:53.064 INFO [stderr]    |
Dec 19 08:55:53.064 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 19 08:55:53.064 INFO [stderr] 
Dec 19 08:55:53.372 INFO [stderr] warning: method is never used: `is_nothing`
Dec 19 08:55:53.372 INFO [stderr]   --> src/board.rs:39:5
Dec 19 08:55:53.372 INFO [stderr]    |
Dec 19 08:55:53.372 INFO [stderr] 39 |     pub fn is_nothing(&self) -> bool {
Dec 19 08:55:53.372 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:55:53.372 INFO [stderr]    |
Dec 19 08:55:53.372 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 19 08:55:53.372 INFO [stderr] 
Dec 19 08:55:53.407 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.08s
Dec 19 08:55:54.207 INFO running `"docker" "inspect" "28e2dba88b93c20bbfefb91028ef78277e967f19c608c905b2b4da0850a197bc"`
Dec 19 08:55:54.456 INFO running `"docker" "rm" "-f" "28e2dba88b93c20bbfefb91028ef78277e967f19c608c905b2b4da0850a197bc"`
Dec 19 08:55:54.763 INFO [stdout] 28e2dba88b93c20bbfefb91028ef78277e967f19c608c905b2b4da0850a197bc