Dec 17 20:08:49.171 INFO checking markcol/board100 against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 17 20:08:49.171 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-6/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/markcol/board100:/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 20:08:49.377 INFO [stdout] ba080e8c44e0d7dee9f705085ca6632917a7afaa8dac32b886a3705c90efabdb
Dec 17 20:08:49.379 INFO running `"docker" "start" "-a" "ba080e8c44e0d7dee9f705085ca6632917a7afaa8dac32b886a3705c90efabdb"`
Dec 17 20:08:50.266 INFO [stderr]    Compiling syn v0.15.17
Dec 17 20:08:58.780 INFO [stderr]    Compiling synstructure v0.10.1
Dec 17 20:09:01.056 INFO [stderr]    Compiling failure_derive v0.1.3
Dec 17 20:09:02.766 INFO [stderr]     Checking failure v0.1.3
Dec 17 20:09:03.181 INFO [stderr]     Checking square100 v0.1.0 (/opt/crater/workdir)
Dec 17 20:09:03.773 INFO [stderr] warning: variant is never constructed: `NotStarted`
Dec 17 20:09:03.773 INFO [stderr]   --> src/board.rs:36:5
Dec 17 20:09:03.773 INFO [stderr]    |
Dec 17 20:09:03.773 INFO [stderr] 36 |     NotStarted, // Board not started
Dec 17 20:09:03.773 INFO [stderr]    |     ^^^^^^^^^^
Dec 17 20:09:03.773 INFO [stderr]    |
Dec 17 20:09:03.773 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 17 20:09:03.773 INFO [stderr] 
Dec 17 20:09:03.773 INFO [stderr] warning: variant is never constructed: `BadDirection`
Dec 17 20:09:03.773 INFO [stderr]   --> src/board.rs:41:5
Dec 17 20:09:03.773 INFO [stderr]    |
Dec 17 20:09:03.773 INFO [stderr] 41 |     BadDirection { dir: Direction, x: usize, y: usize }, // Moving in direction '{}' is invalid
Dec 17 20:09:03.773 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:09:03.773 INFO [stderr] 
Dec 17 20:09:03.773 INFO [stderr] warning: variant is never constructed: `IndexOutOfRange`
Dec 17 20:09:03.773 INFO [stderr]   --> src/board.rs:43:5
Dec 17 20:09:03.773 INFO [stderr]    |
Dec 17 20:09:03.773 INFO [stderr] 43 |     IndexOutOfRange { x: usize, y: usize, max: usize }, // cannot set cell [{}, {}], out of range ({})
Dec 17 20:09:03.773 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:09:03.773 INFO [stderr] 
Dec 17 20:09:03.773 INFO [stderr] warning: variant is never constructed: `CannotClear`
Dec 17 20:09:03.773 INFO [stderr]   --> src/board.rs:45:5
Dec 17 20:09:03.773 INFO [stderr]    |
Dec 17 20:09:03.773 INFO [stderr] 45 |     CannotClear { x: usize, y: usize }, // cannot clear cell [{}, {}]
Dec 17 20:09:03.773 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:09:03.773 INFO [stderr] 
Dec 17 20:09:03.773 INFO [stderr] warning: variant is never constructed: `ValueUsed`
Dec 17 20:09:03.773 INFO [stderr]   --> src/board.rs:50:5
Dec 17 20:09:03.773 INFO [stderr]    |
Dec 17 20:09:03.773 INFO [stderr] 50 |     ValueUsed { x: usize, y: usize, value: u8 }, // cannot set cell [{}, {}] = {}, value already used
Dec 17 20:09:03.773 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:09:03.773 INFO [stderr] 
Dec 17 20:09:03.773 INFO [stderr] warning: variant is never constructed: `ValueOutOfRange`
Dec 17 20:09:03.773 INFO [stderr]   --> src/board.rs:55:5
Dec 17 20:09:03.773 INFO [stderr]    |
Dec 17 20:09:03.773 INFO [stderr] 55 | /     ValueOutOfRange {
Dec 17 20:09:03.773 INFO [stderr] 56 | |         x: usize,
Dec 17 20:09:03.773 INFO [stderr] 57 | |         y: usize,
Dec 17 20:09:03.773 INFO [stderr] 58 | |         value: u8,
Dec 17 20:09:03.773 INFO [stderr] 59 | |         max: usize,
Dec 17 20:09:03.773 INFO [stderr] 60 | |     }, // cannot set cell [{}, {}] = {}, larger than {}
Dec 17 20:09:03.773 INFO [stderr]    | |_____^
Dec 17 20:09:03.773 INFO [stderr] 
Dec 17 20:09:03.773 INFO [stderr] warning: variant is never constructed: `NotEmpty`
Dec 17 20:09:03.773 INFO [stderr]   --> src/board.rs:62:5
Dec 17 20:09:03.773 INFO [stderr]    |
Dec 17 20:09:03.773 INFO [stderr] 62 |     NotEmpty { x: usize, y: usize }, // cell [{}, {}] is not empty
Dec 17 20:09:03.773 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:09:03.773 INFO [stderr] 
Dec 17 20:09:03.773 INFO [stderr] warning: constant item is never used: `HV_OFFSET`
Dec 17 20:09:03.773 INFO [stderr]   --> src/board.rs:66:1
Dec 17 20:09:03.773 INFO [stderr]    |
Dec 17 20:09:03.773 INFO [stderr] 66 | pub const HV_OFFSET: i32 = 3;
Dec 17 20:09:03.774 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:09:03.774 INFO [stderr] 
Dec 17 20:09:03.774 INFO [stderr] warning: constant item is never used: `DIAG_OFFSET`
Dec 17 20:09:03.774 INFO [stderr]   --> src/board.rs:69:1
Dec 17 20:09:03.774 INFO [stderr]    |
Dec 17 20:09:03.774 INFO [stderr] 69 | pub const DIAG_OFFSET: i32 = 2;
Dec 17 20:09:03.774 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:09:03.774 INFO [stderr] 
Dec 17 20:09:03.774 INFO [stderr] warning: variant is never constructed: `Down`
Dec 17 20:09:03.774 INFO [stderr]   --> src/board.rs:74:5
Dec 17 20:09:03.774 INFO [stderr]    |
Dec 17 20:09:03.774 INFO [stderr] 74 |     Down,
Dec 17 20:09:03.774 INFO [stderr]    |     ^^^^
Dec 17 20:09:03.774 INFO [stderr] 
Dec 17 20:09:03.774 INFO [stderr] warning: variant is never constructed: `DownRight`
Dec 17 20:09:03.774 INFO [stderr]   --> src/board.rs:75:5
Dec 17 20:09:03.774 INFO [stderr]    |
Dec 17 20:09:03.774 INFO [stderr] 75 |     DownRight,
Dec 17 20:09:03.774 INFO [stderr]    |     ^^^^^^^^^
Dec 17 20:09:03.774 INFO [stderr] 
Dec 17 20:09:03.774 INFO [stderr] warning: variant is never constructed: `Right`
Dec 17 20:09:03.774 INFO [stderr]   --> src/board.rs:76:5
Dec 17 20:09:03.774 INFO [stderr]    |
Dec 17 20:09:03.774 INFO [stderr] 76 |     Right,
Dec 17 20:09:03.774 INFO [stderr]    |     ^^^^^
Dec 17 20:09:03.774 INFO [stderr] 
Dec 17 20:09:03.774 INFO [stderr] warning: variant is never constructed: `UpRight`
Dec 17 20:09:03.774 INFO [stderr]   --> src/board.rs:77:5
Dec 17 20:09:03.774 INFO [stderr]    |
Dec 17 20:09:03.774 INFO [stderr] 77 |     UpRight,
Dec 17 20:09:03.774 INFO [stderr]    |     ^^^^^^^
Dec 17 20:09:03.774 INFO [stderr] 
Dec 17 20:09:03.774 INFO [stderr] warning: variant is never constructed: `Up`
Dec 17 20:09:03.774 INFO [stderr]   --> src/board.rs:78:5
Dec 17 20:09:03.774 INFO [stderr]    |
Dec 17 20:09:03.774 INFO [stderr] 78 |     Up,
Dec 17 20:09:03.774 INFO [stderr]    |     ^^
Dec 17 20:09:03.774 INFO [stderr] 
Dec 17 20:09:03.774 INFO [stderr] warning: variant is never constructed: `UpLeft`
Dec 17 20:09:03.774 INFO [stderr]   --> src/board.rs:79:5
Dec 17 20:09:03.774 INFO [stderr]    |
Dec 17 20:09:03.774 INFO [stderr] 79 |     UpLeft,
Dec 17 20:09:03.774 INFO [stderr]    |     ^^^^^^
Dec 17 20:09:03.774 INFO [stderr] 
Dec 17 20:09:03.774 INFO [stderr] warning: variant is never constructed: `Left`
Dec 17 20:09:03.774 INFO [stderr]   --> src/board.rs:80:5
Dec 17 20:09:03.774 INFO [stderr]    |
Dec 17 20:09:03.774 INFO [stderr] 80 |     Left,
Dec 17 20:09:03.774 INFO [stderr]    |     ^^^^
Dec 17 20:09:03.774 INFO [stderr] 
Dec 17 20:09:03.774 INFO [stderr] warning: variant is never constructed: `DownLeft`
Dec 17 20:09:03.774 INFO [stderr]   --> src/board.rs:81:5
Dec 17 20:09:03.774 INFO [stderr]    |
Dec 17 20:09:03.774 INFO [stderr] 81 |     DownLeft,
Dec 17 20:09:03.774 INFO [stderr]    |     ^^^^^^^^
Dec 17 20:09:03.774 INFO [stderr] 
Dec 17 20:09:03.774 INFO [stderr] warning: method is never used: `iterator`
Dec 17 20:09:03.774 INFO [stderr]   --> src/board.rs:85:5
Dec 17 20:09:03.774 INFO [stderr]    |
Dec 17 20:09:03.774 INFO [stderr] 85 |     pub fn iterator() -> Iter<'static, Direction> {
Dec 17 20:09:03.774 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:09:03.774 INFO [stderr] 
Dec 17 20:09:03.774 INFO [stderr] warning: static item is never used: `DIRECTIONS`
Dec 17 20:09:03.774 INFO [stderr]   --> src/board.rs:86:9
Dec 17 20:09:03.774 INFO [stderr]    |
Dec 17 20:09:03.774 INFO [stderr] 86 | /         static DIRECTIONS: [Direction; 8] = [
Dec 17 20:09:03.774 INFO [stderr] 87 | |             Direction::Down,
Dec 17 20:09:03.774 INFO [stderr] 88 | |             Direction::DownRight,
Dec 17 20:09:03.774 INFO [stderr] 89 | |             Direction::Right,
Dec 17 20:09:03.774 INFO [stderr] ...  |
Dec 17 20:09:03.774 INFO [stderr] 94 | |             Direction::DownLeft,
Dec 17 20:09:03.774 INFO [stderr] 95 | |         ];
Dec 17 20:09:03.774 INFO [stderr]    | |__________^
Dec 17 20:09:03.774 INFO [stderr] 
Dec 17 20:09:03.774 INFO [stderr] warning: method is never used: `new`
Dec 17 20:09:03.774 INFO [stderr]    --> src/board.rs:135:5
Dec 17 20:09:03.774 INFO [stderr]     |
Dec 17 20:09:03.774 INFO [stderr] 135 |     pub fn new(size: usize) -> Self {
Dec 17 20:09:03.774 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:09:03.774 INFO [stderr] 
Dec 17 20:09:03.774 INFO [stderr] warning: method is never used: `is_started`
Dec 17 20:09:03.774 INFO [stderr]    --> src/board.rs:155:5
Dec 17 20:09:03.774 INFO [stderr]     |
Dec 17 20:09:03.774 INFO [stderr] 155 |     pub fn is_started(&self) -> bool {
Dec 17 20:09:03.774 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:09:03.774 INFO [stderr] 
Dec 17 20:09:03.774 INFO [stderr] warning: method is never used: `possible_moves`
Dec 17 20:09:03.774 INFO [stderr]    --> src/board.rs:161:5
Dec 17 20:09:03.774 INFO [stderr]     |
Dec 17 20:09:03.774 INFO [stderr] 161 |     pub fn possible_moves(&self) -> Vec<&'static Direction> {
Dec 17 20:09:03.774 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:09:03.774 INFO [stderr] 
Dec 17 20:09:03.774 INFO [stderr] warning: method is never used: `valid_move`
Dec 17 20:09:03.774 INFO [stderr]    --> src/board.rs:172:5
Dec 17 20:09:03.774 INFO [stderr]     |
Dec 17 20:09:03.774 INFO [stderr] 172 |     fn valid_move(&self, dir: Direction) -> Option<(usize, usize)> {
Dec 17 20:09:03.774 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:09:03.774 INFO [stderr] 
Dec 17 20:09:03.775 INFO [stderr] warning: method is never used: `is_won`
Dec 17 20:09:03.775 INFO [stderr]    --> src/board.rs:203:5
Dec 17 20:09:03.775 INFO [stderr]     |
Dec 17 20:09:03.775 INFO [stderr] 203 |     pub fn is_won(&self) -> bool {
Dec 17 20:09:03.775 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:09:03.775 INFO [stderr] 
Dec 17 20:09:03.775 INFO [stderr] warning: static item is never used: `ZERO`
Dec 17 20:09:03.775 INFO [stderr]    --> src/board.rs:204:9
Dec 17 20:09:03.775 INFO [stderr]     |
Dec 17 20:09:03.775 INFO [stderr] 204 |         static ZERO: u8 = 0 as u8;
Dec 17 20:09:03.775 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:09:03.775 INFO [stderr] 
Dec 17 20:09:03.775 INFO [stderr] warning: method is never used: `is_blocked`
Dec 17 20:09:03.775 INFO [stderr]    --> src/board.rs:210:5
Dec 17 20:09:03.775 INFO [stderr]     |
Dec 17 20:09:03.775 INFO [stderr] 210 |     pub fn is_blocked(&self) -> bool {
Dec 17 20:09:03.775 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:09:03.775 INFO [stderr] 
Dec 17 20:09:03.775 INFO [stderr] warning: method is never used: `score`
Dec 17 20:09:03.775 INFO [stderr]    --> src/board.rs:216:5
Dec 17 20:09:03.775 INFO [stderr]     |
Dec 17 20:09:03.775 INFO [stderr] 216 |     pub fn score(&self) -> usize {
Dec 17 20:09:03.775 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:09:03.775 INFO [stderr] 
Dec 17 20:09:03.775 INFO [stderr] warning: method is never used: `value_at`
Dec 17 20:09:03.775 INFO [stderr]    --> src/board.rs:222:5
Dec 17 20:09:03.775 INFO [stderr]     |
Dec 17 20:09:03.775 INFO [stderr] 222 |     pub fn value_at(&self, x: usize, y: usize) -> u8 {
Dec 17 20:09:03.775 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:09:03.775 INFO [stderr] 
Dec 17 20:09:03.775 INFO [stderr] warning: method is never used: `start_at`
Dec 17 20:09:03.775 INFO [stderr]    --> src/board.rs:227:5
Dec 17 20:09:03.775 INFO [stderr]     |
Dec 17 20:09:03.775 INFO [stderr] 227 |     pub fn start_at(&mut self, x: usize, y: usize) -> Result<Board, BoardError> {
Dec 17 20:09:03.775 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:09:03.775 INFO [stderr] 
Dec 17 20:09:03.775 INFO [stderr] warning: method is never used: `next_move`
Dec 17 20:09:03.775 INFO [stderr]    --> src/board.rs:232:5
Dec 17 20:09:03.775 INFO [stderr]     |
Dec 17 20:09:03.775 INFO [stderr] 232 |     pub fn next_move(&mut self, dir: Direction) -> Result<Board, BoardError> {
Dec 17 20:09:03.775 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:09:03.775 INFO [stderr] 
Dec 17 20:09:03.775 INFO [stderr] warning: method is never used: `set_value`
Dec 17 20:09:03.775 INFO [stderr]    --> src/board.rs:250:5
Dec 17 20:09:03.775 INFO [stderr]     |
Dec 17 20:09:03.775 INFO [stderr] 250 |     fn set_value(&mut self, x: usize, y: usize, value: u8) -> Result<Board, BoardError> {
Dec 17 20:09:03.775 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:09:03.775 INFO [stderr] 
Dec 17 20:09:04.026 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.82s
Dec 17 20:09:04.540 INFO running `"docker" "inspect" "ba080e8c44e0d7dee9f705085ca6632917a7afaa8dac32b886a3705c90efabdb"`
Dec 17 20:09:04.700 INFO running `"docker" "rm" "-f" "ba080e8c44e0d7dee9f705085ca6632917a7afaa8dac32b886a3705c90efabdb"`
Dec 17 20:09:04.854 INFO [stdout] ba080e8c44e0d7dee9f705085ca6632917a7afaa8dac32b886a3705c90efabdb