[INFO] cloning repository https://github.com/rodriced/TheLabyrinth
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rodriced/TheLabyrinth" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frodriced%2FTheLabyrinth", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frodriced%2FTheLabyrinth'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 238a6a0a80fb4125875a337c863baf3562466689
[INFO] checking rodriced/TheLabyrinth against try#6713fa75964eb229409a9c6f6f5c418423e313ff for pr-133502-22
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frodriced%2FTheLabyrinth" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/rodriced/TheLabyrinth
[INFO] finished tweaking git repo https://github.com/rodriced/TheLabyrinth
[INFO] tweaked toml for git repo https://github.com/rodriced/TheLabyrinth written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/rodriced/TheLabyrinth on toolchain 6713fa75964eb229409a9c6f6f5c418423e313ff
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6713fa75964eb229409a9c6f6f5c418423e313ff" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/rodriced/TheLabyrinth 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" "+6713fa75964eb229409a9c6f6f5c418423e313ff" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking rodriced/TheLabyrinth against try#6713fa75964eb229409a9c6f6f5c418423e313ff for pr-133502-22
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frodriced%2FTheLabyrinth" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/rodriced/TheLabyrinth
[INFO] finished tweaking git repo https://github.com/rodriced/TheLabyrinth
[INFO] tweaked toml for git repo https://github.com/rodriced/TheLabyrinth written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/rodriced/TheLabyrinth on toolchain 6713fa75964eb229409a9c6f6f5c418423e313ff
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6713fa75964eb229409a9c6f6f5c418423e313ff" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/rodriced/TheLabyrinth 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" "+6713fa75964eb229409a9c6f6f5c418423e313ff" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+6713fa75964eb229409a9c6f6f5c418423e313ff" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e33198083b1efdd4db71210b49995d7ee7550d923085d63a877be20c083b0257
[INFO] running `Command { std: "docker" "start" "-a" "e33198083b1efdd4db71210b49995d7ee7550d923085d63a877be20c083b0257", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e33198083b1efdd4db71210b49995d7ee7550d923085d63a877be20c083b0257", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e33198083b1efdd4db71210b49995d7ee7550d923085d63a877be20c083b0257", kill_on_drop: false }`
[INFO] [stdout] e33198083b1efdd4db71210b49995d7ee7550d923085d63a877be20c083b0257
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+6713fa75964eb229409a9c6f6f5c418423e313ff" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2167003275ac3ad0e5a2b271d3597fbca97f5a5baaec8e937177c05a2ec67482
[INFO] running `Command { std: "docker" "start" "-a" "2167003275ac3ad0e5a2b271d3597fbca97f5a5baaec8e937177c05a2ec67482", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking the_labyrinth v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]   --> src/game_sample.rs:71:88
[INFO] [stdout]    |
[INFO] [stdout] 71 |         println!("{}", self.orig_board_rows_data.iter().map(|v| from_utf8(v).unwrap()).intersperse("\n").collect::<String>());
[INFO] [stdout]    |                                                                                        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: call with fully qualified syntax `itertools::Itertools::intersperse(...)` to keep using the current method
[INFO] [stdout]    = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]    = note: `#[warn(unstable_name_collisions)]` (part of `#[warn(future_incompatible)]`) on by default
[INFO] [stdout] help: add `#![feature(iter_intersperse)]` to the crate attributes to enable `std::iter::Iterator::intersperse`
[INFO] [stdout]   --> src/engine.rs:1:1
[INFO] [stdout]    |
[INFO] [stdout]  1 + #![feature(iter_intersperse)]
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]   --> src/game_sample.rs:73:72
[INFO] [stdout]    |
[INFO] [stdout] 73 |         println!("{}", self.view.iter().map(|v| from_utf8(v).unwrap()).intersperse("\n").collect::<String>());
[INFO] [stdout]    |                                                                        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: call with fully qualified syntax `itertools::Itertools::intersperse(...)` to keep using the current method
[INFO] [stdout]    = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout] help: add `#![feature(iter_intersperse)]` to the crate attributes to enable `std::iter::Iterator::intersperse`
[INFO] [stdout]   --> src/engine.rs:1:1
[INFO] [stdout]    |
[INFO] [stdout]  1 + #![feature(iter_intersperse)]
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]   --> src/game_sample.rs:71:88
[INFO] [stdout]    |
[INFO] [stdout] 71 |         println!("{}", self.orig_board_rows_data.iter().map(|v| from_utf8(v).unwrap()).intersperse("\n").collect::<String>());
[INFO] [stdout]    |                                                                                        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: call with fully qualified syntax `itertools::Itertools::intersperse(...)` to keep using the current method
[INFO] [stdout]    = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]    = note: `#[warn(unstable_name_collisions)]` (part of `#[warn(future_incompatible)]`) on by default
[INFO] [stdout] help: add `#![feature(iter_intersperse)]` to the crate attributes to enable `std::iter::Iterator::intersperse`
[INFO] [stdout]   --> src/engine.rs:1:1
[INFO] [stdout]    |
[INFO] [stdout]  1 + #![feature(iter_intersperse)]
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]   --> src/game_sample.rs:73:72
[INFO] [stdout]    |
[INFO] [stdout] 73 |         println!("{}", self.view.iter().map(|v| from_utf8(v).unwrap()).intersperse("\n").collect::<String>());
[INFO] [stdout]    |                                                                        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: call with fully qualified syntax `itertools::Itertools::intersperse(...)` to keep using the current method
[INFO] [stdout]    = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout] help: add `#![feature(iter_intersperse)]` to the crate attributes to enable `std::iter::Iterator::intersperse`
[INFO] [stdout]   --> src/engine.rs:1:1
[INFO] [stdout]    |
[INFO] [stdout]  1 + #![feature(iter_intersperse)]
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `return_path` is never read
[INFO] [stdout]    --> src/engine.rs:46:27
[INFO] [stdout]     |
[INFO] [stdout]  46 |     let mut return_path = Vec::new();
[INFO] [stdout]     |                           ^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 139 |                             return_path = return_path_to_test;
[INFO] [stdout]     |                             ----------- `return_path` is overwritten here before the previous value is read
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `add`, and `sub` are never used
[INFO] [stdout]   --> src/vect2_t.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | / impl<T> Vect2<T>
[INFO] [stdout] 25 | | where
[INFO] [stdout] 26 | |     T: Copy
[INFO] [stdout] 27 | |         + PartialEq
[INFO] [stdout] ...  |
[INFO] [stdout] 32 | |         + ops::Mul<Output = T>
[INFO] [stdout] 33 | |         + ops::MulAssign,
[INFO] [stdout]    | |_________________________- associated items in this implementation
[INFO] [stdout] 34 |   {
[INFO] [stdout] 35 |       pub fn new(x: T, y: T) -> Self {
[INFO] [stdout]    |              ^^^
[INFO] [stdout] ...
[INFO] [stdout] 43 |       pub fn add(mut self, rhs: Self) -> Self {
[INFO] [stdout]    |              ^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 |       pub fn sub(mut self, rhs: Self) -> Self {
[INFO] [stdout]    |              ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `length_optim`, `x_usize`, `y_usize`, and `xy_usize` are never used
[INFO] [stdout]    --> src/vect2_t.rs:93:8
[INFO] [stdout]     |
[INFO] [stdout]  92 | impl Vect2<f64> {
[INFO] [stdout]     | --------------- methods in this implementation
[INFO] [stdout]  93 |     fn length_optim(&self) -> f64 {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  97 |     pub fn x_usize(&self) -> usize {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 104 |     pub fn y_usize(&self) -> usize {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 111 |     pub fn xy_usize(&self) -> UCoord2 {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `id`, `array`, `reverse`, `from_delta`, `apply_to_coord`, and `iter_from` are never used
[INFO] [stdout]   --> src/direction.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl Direction {
[INFO] [stdout]    | -------------- associated items in this implementation
[INFO] [stdout] 22 |     fn id(&self) -> usize {
[INFO] [stdout]    |        ^^
[INFO] [stdout] ...
[INFO] [stdout] 31 |     fn array() -> [Self; 4] {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 52 |     fn reverse(&self) -> Self {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 68 |     fn from_delta(vect: &UDelta2) -> Direction {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 77 |     fn apply_to_coord(&self, start: UCoord2) -> UCoord2 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 81 |     fn iter_from(start: Direction) -> impl Iterator<Item = Direction> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `rounds` is never read
[INFO] [stdout]   --> src/board.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub struct Board {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 20 |     rounds: usize,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `clear` is never used
[INFO] [stdout]   --> src/exploration.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl Engine {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 36 |     pub fn clear(&mut self) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `start` is never read
[INFO] [stdout]   --> src/game_sample.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct GameSample {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 19 |     start: UCoord2,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `debug` is never used
[INFO] [stdout]   --> src/game_sample.rs:69:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl GameSample {
[INFO] [stdout]    | --------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 69 |     pub fn debug(&mut self) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/game_sample.rs:100:29
[INFO] [stdout]     |
[INFO] [stdout] 100 |     pub fn init_data_reader(&mut self) -> GameSampleStdin {
[INFO] [stdout]     |                             ^^^^^^^^^     ^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 100 |     pub fn init_data_reader(&mut self) -> GameSampleStdin<'_> {
[INFO] [stdout]     |                                                          ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/game_sample.rs:103:30
[INFO] [stdout]     |
[INFO] [stdout] 103 |     pub fn round_data_reader(&mut self) -> GameSampleStdin {
[INFO] [stdout]     |                              ^^^^^^^^^     ^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                              |
[INFO] [stdout]     |                              the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 103 |     pub fn round_data_reader(&mut self) -> GameSampleStdin<'_> {
[INFO] [stdout]     |                                                           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `return_path` is never read
[INFO] [stdout]    --> src/engine.rs:46:27
[INFO] [stdout]     |
[INFO] [stdout]  46 |     let mut return_path = Vec::new();
[INFO] [stdout]     |                           ^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 139 |                             return_path = return_path_to_test;
[INFO] [stdout]     |                             ----------- `return_path` is overwritten here before the previous value is read
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `add` and `sub` are never used
[INFO] [stdout]   --> src/vect2_t.rs:43:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | / impl<T> Vect2<T>
[INFO] [stdout] 25 | | where
[INFO] [stdout] 26 | |     T: Copy
[INFO] [stdout] 27 | |         + PartialEq
[INFO] [stdout] ...  |
[INFO] [stdout] 32 | |         + ops::Mul<Output = T>
[INFO] [stdout] 33 | |         + ops::MulAssign,
[INFO] [stdout]    | |_________________________- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 43 |       pub fn add(mut self, rhs: Self) -> Self {
[INFO] [stdout]    |              ^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 |       pub fn sub(mut self, rhs: Self) -> Self {
[INFO] [stdout]    |              ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `length_optim`, `x_usize`, `y_usize`, and `xy_usize` are never used
[INFO] [stdout]    --> src/vect2_t.rs:93:8
[INFO] [stdout]     |
[INFO] [stdout]  92 | impl Vect2<f64> {
[INFO] [stdout]     | --------------- methods in this implementation
[INFO] [stdout]  93 |     fn length_optim(&self) -> f64 {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  97 |     pub fn x_usize(&self) -> usize {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 104 |     pub fn y_usize(&self) -> usize {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 111 |     pub fn xy_usize(&self) -> UCoord2 {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `id`, `array`, `reverse`, `from_delta`, `apply_to_coord`, and `iter_from` are never used
[INFO] [stdout]   --> src/direction.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl Direction {
[INFO] [stdout]    | -------------- associated items in this implementation
[INFO] [stdout] 22 |     fn id(&self) -> usize {
[INFO] [stdout]    |        ^^
[INFO] [stdout] ...
[INFO] [stdout] 31 |     fn array() -> [Self; 4] {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 52 |     fn reverse(&self) -> Self {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 68 |     fn from_delta(vect: &UDelta2) -> Direction {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 77 |     fn apply_to_coord(&self, start: UCoord2) -> UCoord2 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 81 |     fn iter_from(start: Direction) -> impl Iterator<Item = Direction> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `rounds` is never read
[INFO] [stdout]   --> src/board.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub struct Board {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 20 |     rounds: usize,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `clear` is never used
[INFO] [stdout]   --> src/exploration.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl Engine {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 36 |     pub fn clear(&mut self) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `start` is never read
[INFO] [stdout]   --> src/game_sample.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct GameSample {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 19 |     start: UCoord2,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `debug` is never used
[INFO] [stdout]   --> src/game_sample.rs:69:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl GameSample {
[INFO] [stdout]    | --------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 69 |     pub fn debug(&mut self) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/game_sample.rs:100:29
[INFO] [stdout]     |
[INFO] [stdout] 100 |     pub fn init_data_reader(&mut self) -> GameSampleStdin {
[INFO] [stdout]     |                             ^^^^^^^^^     ^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 100 |     pub fn init_data_reader(&mut self) -> GameSampleStdin<'_> {
[INFO] [stdout]     |                                                          ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/game_sample.rs:103:30
[INFO] [stdout]     |
[INFO] [stdout] 103 |     pub fn round_data_reader(&mut self) -> GameSampleStdin {
[INFO] [stdout]     |                              ^^^^^^^^^     ^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                              |
[INFO] [stdout]     |                              the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 103 |     pub fn round_data_reader(&mut self) -> GameSampleStdin<'_> {
[INFO] [stdout]     |                                                           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.48s
[INFO] running `Command { std: "docker" "inspect" "2167003275ac3ad0e5a2b271d3597fbca97f5a5baaec8e937177c05a2ec67482", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2167003275ac3ad0e5a2b271d3597fbca97f5a5baaec8e937177c05a2ec67482", kill_on_drop: false }`
[INFO] [stdout] 2167003275ac3ad0e5a2b271d3597fbca97f5a5baaec8e937177c05a2ec67482
