[INFO] cloning repository https://github.com/opedro-c/snake_game
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/opedro-c/snake_game" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fopedro-c%2Fsnake_game", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fopedro-c%2Fsnake_game'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4c6770e9779442cbdc4c848c176547b9238fb629
[INFO] checking opedro-c/snake_game against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fopedro-c%2Fsnake_game" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/opedro-c/snake_game on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/opedro-c/snake_game
[INFO] finished tweaking git repo https://github.com/opedro-c/snake_game
[INFO] tweaked toml for git repo https://github.com/opedro-c/snake_game written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/opedro-c/snake_game 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 871aed69b533703dde6a1e07c27a34bd9f19db780e4da3189d1feb0b65ef114b
[INFO] running `Command { std: "docker" "start" "-a" "871aed69b533703dde6a1e07c27a34bd9f19db780e4da3189d1feb0b65ef114b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "871aed69b533703dde6a1e07c27a34bd9f19db780e4da3189d1feb0b65ef114b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "871aed69b533703dde6a1e07c27a34bd9f19db780e4da3189d1feb0b65ef114b", kill_on_drop: false }`
[INFO] [stdout] 871aed69b533703dde6a1e07c27a34bd9f19db780e4da3189d1feb0b65ef114b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b8f872aa99b4bacd9deaaac2394673587df73189a197a57899d92b42def2d6e7
[INFO] running `Command { std: "docker" "start" "-a" "b8f872aa99b4bacd9deaaac2394673587df73189a197a57899d92b42def2d6e7", kill_on_drop: false }`
[INFO] [stderr]     Checking numtoa v0.1.0
[INFO] [stderr]     Checking termion v1.5.6
[INFO] [stderr]     Checking snake_game v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::borrow::BorrowMut`
[INFO] [stdout]  --> src/snake.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::borrow::BorrowMut;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::BorrowMut`
[INFO] [stdout]  --> src/snake.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::borrow::BorrowMut;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `rows` and `columns` are never read
[INFO] [stdout]  --> src/board.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Board {
[INFO] [stdout]   |            ----- fields in this struct
[INFO] [stdout] 5 |     rows: u8,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 6 |     columns: u8,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Board` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `rows` and `columns` are never read
[INFO] [stdout]  --> src/board.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Board {
[INFO] [stdout]   |            ----- fields in this struct
[INFO] [stdout] 5 |     rows: u8,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 6 |     columns: u8,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Board` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `head`, `repr`, `direction`, and `position` are never read
[INFO] [stdout]   --> src/snake.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | struct Snake {
[INFO] [stdout]    |        ----- fields in this struct
[INFO] [stdout] 8  |     head: bool,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 9  |     repr: SnakeBodyParts,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 10 |     direction: Directions,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 11 |     position: Position,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `head`, `repr`, `direction`, and `position` are never read
[INFO] [stdout]   --> src/snake.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | struct Snake {
[INFO] [stdout]    |        ----- fields in this struct
[INFO] [stdout] 8  |     head: bool,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 9  |     repr: SnakeBodyParts,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 10 |     direction: Directions,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 11 |     position: Position,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `HeadUp`, `HeadDown`, `HeadLeft`, `HeadRight`, and `Body` are never constructed
[INFO] [stdout]   --> src/snake.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | enum SnakeBodyParts {
[INFO] [stdout]    |      -------------- variants in this enum
[INFO] [stdout] 16 |     HeadUp,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 17 |     HeadDown,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 18 |     HeadLeft,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 19 |     HeadRight,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 20 |     Body
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `HeadUp`, `HeadDown`, `HeadLeft`, `HeadRight`, and `Body` are never constructed
[INFO] [stdout]   --> src/snake.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | enum SnakeBodyParts {
[INFO] [stdout]    |      -------------- variants in this enum
[INFO] [stdout] 16 |     HeadUp,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 17 |     HeadDown,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 18 |     HeadLeft,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 19 |     HeadRight,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 20 |     Body
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `update_body_position` and `add_body` are never used
[INFO] [stdout]   --> src/snake.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | impl Snake {
[INFO] [stdout]    | ---------- methods in this implementation
[INFO] [stdout] 24 |     pub fn update_body_position(&mut self, new_position: Position, direction: Directions) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 52 |     pub fn add_body(&mut self, new_body: Option<Box<Snake>>) {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `update_body_position` and `add_body` are never used
[INFO] [stdout]   --> src/snake.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | impl Snake {
[INFO] [stdout]    | ---------- methods in this implementation
[INFO] [stdout] 24 |     pub fn update_body_position(&mut self, new_position: Position, direction: Directions) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 52 |     pub fn add_body(&mut self, new_body: Option<Box<Snake>>) {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `row` and `column` are never read
[INFO] [stdout]   --> src/snake.rs:68:5
[INFO] [stdout]    |
[INFO] [stdout] 67 | struct Position {
[INFO] [stdout]    |        -------- fields in this struct
[INFO] [stdout] 68 |     row: u8,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 69 |     column: u8
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `row` and `column` are never read
[INFO] [stdout]   --> src/snake.rs:68:5
[INFO] [stdout]    |
[INFO] [stdout] 67 | struct Position {
[INFO] [stdout]    |        -------- fields in this struct
[INFO] [stdout] 68 |     row: u8,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 69 |     column: u8
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.33s
[INFO] running `Command { std: "docker" "inspect" "b8f872aa99b4bacd9deaaac2394673587df73189a197a57899d92b42def2d6e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8f872aa99b4bacd9deaaac2394673587df73189a197a57899d92b42def2d6e7", kill_on_drop: false }`
[INFO] [stdout] b8f872aa99b4bacd9deaaac2394673587df73189a197a57899d92b42def2d6e7