[INFO] cloning repository https://github.com/App24/battleships-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/App24/battleships-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FApp24%2Fbattleships-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FApp24%2Fbattleships-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8dfeae00b1f49f0a1ea8d8e9b509e08f1bb89d1e
[INFO] testing App24/battleships-rust against master#733b47ea4b1b86216f14ef56e49440c33933f230+rustflags=-Copt-level=3 for pr-138759
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FApp24%2Fbattleships-rust" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/App24/battleships-rust
[INFO] finished tweaking git repo https://github.com/App24/battleships-rust
[INFO] tweaked toml for git repo https://github.com/App24/battleships-rust written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/App24/battleships-rust on toolchain 733b47ea4b1b86216f14ef56e49440c33933f230
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/App24/battleships-rust 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" "+733b47ea4b1b86216f14ef56e49440c33933f230" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3fc6dfb93881f968ba241c98381452c20b641219f7201555cae616d447b17f3c
[INFO] running `Command { std: "docker" "start" "-a" "3fc6dfb93881f968ba241c98381452c20b641219f7201555cae616d447b17f3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3fc6dfb93881f968ba241c98381452c20b641219f7201555cae616d447b17f3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3fc6dfb93881f968ba241c98381452c20b641219f7201555cae616d447b17f3c", kill_on_drop: false }`
[INFO] [stdout] 3fc6dfb93881f968ba241c98381452c20b641219f7201555cae616d447b17f3c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3be4362f6b4e3d7e5c02786d44ae89872587868a646e24c86e2bb3c24568588d
[INFO] running `Command { std: "docker" "start" "-a" "3be4362f6b4e3d7e5c02786d44ae89872587868a646e24c86e2bb3c24568588d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.159
[INFO] [stderr]    Compiling memoffset v0.7.1
[INFO] [stderr]    Compiling syn v2.0.79
[INFO] [stderr]    Compiling num-bigint v0.4.6
[INFO] [stderr]    Compiling getrandom v0.2.15
[INFO] [stderr]    Compiling nix v0.26.4
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling num-rational v0.4.2
[INFO] [stderr]    Compiling num v0.4.3
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]    Compiling num-derive v0.4.2
[INFO] [stderr]    Compiling getch-rs v0.2.0
[INFO] [stderr]    Compiling zerocopy v0.7.35
[INFO] [stderr]    Compiling ppv-lite86 v0.2.20
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling battleships v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::char::from_u32`
[INFO] [stdout]  --> src/Game.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::char::from_u32;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `background_color` is never read
[INFO] [stdout]   --> src/Board.rs:75:29
[INFO] [stdout]    |
[INFO] [stdout] 75 |                     let mut background_color: Color = Color::Black;
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/Difficulty.rs:17:13
[INFO] [stdout]    |
[INFO] [stdout] 17 |             _ => "",
[INFO] [stdout]    |             ^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> src/Difficulty.rs:17:13
[INFO] [stdout]    |
[INFO] [stdout] 14 |             Self::Easy => "Easy",
[INFO] [stdout]    |             ---------- matches some of the same values
[INFO] [stdout] 15 |             Self::Medium => "Medium",
[INFO] [stdout]    |             ------------ matches some of the same values
[INFO] [stdout] 16 |             Self::Hard => "Hard",
[INFO] [stdout]    |             ---------- matches some of the same values
[INFO] [stdout] 17 |             _ => "",
[INFO] [stdout]    |             ^ collectively making this unreachable
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/AI.rs:20:13
[INFO] [stdout]    |
[INFO] [stdout] 20 |         for i in 0..5 {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `x` is never read
[INFO] [stdout]   --> src/AI.rs:50:17
[INFO] [stdout]    |
[INFO] [stdout] 50 |         let mut x: u32 = 0;
[INFO] [stdout]    |                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `y` is never read
[INFO] [stdout]   --> src/AI.rs:51:17
[INFO] [stdout]    |
[INFO] [stdout] 51 |         let mut y: u32 = 0;
[INFO] [stdout]    |                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `x` is never read
[INFO] [stdout]    --> src/AI.rs:169:17
[INFO] [stdout]     |
[INFO] [stdout] 169 |         let mut x: u32 = 0;
[INFO] [stdout]     |                 ^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `y` is never read
[INFO] [stdout]    --> src/AI.rs:170:17
[INFO] [stdout]     |
[INFO] [stdout] 170 |         let mut y: u32 = 0;
[INFO] [stdout]     |                 ^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `Board` should have a snake case name
[INFO] [stdout]  --> src/main.rs:1:9
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub mod Board;
[INFO] [stdout]   |         ^^^^^ help: convert the identifier to snake case: `board`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `Game` should have a snake case name
[INFO] [stdout]  --> src/main.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub mod Game;
[INFO] [stdout]   |         ^^^^ help: convert the identifier to snake case: `game`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `Ship` should have a snake case name
[INFO] [stdout]  --> src/main.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub mod Ship;
[INFO] [stdout]   |         ^^^^ help: convert the identifier to snake case (notice the capitalization): `ship`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `Difficulty` should have a snake case name
[INFO] [stdout]  --> src/main.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub mod Difficulty;
[INFO] [stdout]   |         ^^^^^^^^^^ help: convert the identifier to snake case: `difficulty`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `AI` should have a snake case name
[INFO] [stdout]  --> src/main.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub mod AI;
[INFO] [stdout]   |         ^^ help: convert the identifier to snake case: `ai`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 31.74s
[INFO] running `Command { std: "docker" "inspect" "3be4362f6b4e3d7e5c02786d44ae89872587868a646e24c86e2bb3c24568588d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3be4362f6b4e3d7e5c02786d44ae89872587868a646e24c86e2bb3c24568588d", kill_on_drop: false }`
[INFO] [stdout] 3be4362f6b4e3d7e5c02786d44ae89872587868a646e24c86e2bb3c24568588d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e446dc0afe4f888ae330a2d4751e941f9205c0cc79bace1e985760df514a3c8e
[INFO] running `Command { std: "docker" "start" "-a" "e446dc0afe4f888ae330a2d4751e941f9205c0cc79bace1e985760df514a3c8e", kill_on_drop: false }`
[INFO] [stderr]    Compiling battleships v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::char::from_u32`
[INFO] [stdout]  --> src/Game.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::char::from_u32;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `background_color` is never read
[INFO] [stdout]   --> src/Board.rs:75:29
[INFO] [stdout]    |
[INFO] [stdout] 75 |                     let mut background_color: Color = Color::Black;
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/Difficulty.rs:17:13
[INFO] [stdout]    |
[INFO] [stdout] 17 |             _ => "",
[INFO] [stdout]    |             ^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> src/Difficulty.rs:17:13
[INFO] [stdout]    |
[INFO] [stdout] 14 |             Self::Easy => "Easy",
[INFO] [stdout]    |             ---------- matches some of the same values
[INFO] [stdout] 15 |             Self::Medium => "Medium",
[INFO] [stdout]    |             ------------ matches some of the same values
[INFO] [stdout] 16 |             Self::Hard => "Hard",
[INFO] [stdout]    |             ---------- matches some of the same values
[INFO] [stdout] 17 |             _ => "",
[INFO] [stdout]    |             ^ collectively making this unreachable
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/AI.rs:20:13
[INFO] [stdout]    |
[INFO] [stdout] 20 |         for i in 0..5 {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `x` is never read
[INFO] [stdout]   --> src/AI.rs:50:17
[INFO] [stdout]    |
[INFO] [stdout] 50 |         let mut x: u32 = 0;
[INFO] [stdout]    |                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `y` is never read
[INFO] [stdout]   --> src/AI.rs:51:17
[INFO] [stdout]    |
[INFO] [stdout] 51 |         let mut y: u32 = 0;
[INFO] [stdout]    |                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `x` is never read
[INFO] [stdout]    --> src/AI.rs:169:17
[INFO] [stdout]     |
[INFO] [stdout] 169 |         let mut x: u32 = 0;
[INFO] [stdout]     |                 ^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `y` is never read
[INFO] [stdout]    --> src/AI.rs:170:17
[INFO] [stdout]     |
[INFO] [stdout] 170 |         let mut y: u32 = 0;
[INFO] [stdout]     |                 ^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `Board` should have a snake case name
[INFO] [stdout]  --> src/main.rs:1:9
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub mod Board;
[INFO] [stdout]   |         ^^^^^ help: convert the identifier to snake case: `board`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `Game` should have a snake case name
[INFO] [stdout]  --> src/main.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub mod Game;
[INFO] [stdout]   |         ^^^^ help: convert the identifier to snake case: `game`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `Ship` should have a snake case name
[INFO] [stdout]  --> src/main.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub mod Ship;
[INFO] [stdout]   |         ^^^^ help: convert the identifier to snake case (notice the capitalization): `ship`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `Difficulty` should have a snake case name
[INFO] [stdout]  --> src/main.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub mod Difficulty;
[INFO] [stdout]   |         ^^^^^^^^^^ help: convert the identifier to snake case: `difficulty`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `AI` should have a snake case name
[INFO] [stdout]  --> src/main.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub mod AI;
[INFO] [stdout]   |         ^^ help: convert the identifier to snake case: `ai`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.59s
[INFO] running `Command { std: "docker" "inspect" "e446dc0afe4f888ae330a2d4751e941f9205c0cc79bace1e985760df514a3c8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e446dc0afe4f888ae330a2d4751e941f9205c0cc79bace1e985760df514a3c8e", kill_on_drop: false }`
[INFO] [stdout] e446dc0afe4f888ae330a2d4751e941f9205c0cc79bace1e985760df514a3c8e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 20b825988c40f8f3a1d51d5aec1c2974215895ed1beea52cec1009ddaf12b518
[INFO] running `Command { std: "docker" "start" "-a" "20b825988c40f8f3a1d51d5aec1c2974215895ed1beea52cec1009ddaf12b518", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::char::from_u32`
[INFO] [stderr]  --> src/Game.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::char::from_u32;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `background_color` is never read
[INFO] [stderr]   --> src/Board.rs:75:29
[INFO] [stderr]    |
[INFO] [stderr] 75 |                     let mut background_color: Color = Color::Black;
[INFO] [stderr]    |                             ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/Difficulty.rs:17:13
[INFO] [stderr]    |
[INFO] [stderr] 17 |             _ => "",
[INFO] [stderr]    |             ^ no value can reach this
[INFO] [stderr]    |
[INFO] [stderr] note: multiple earlier patterns match some of the same values
[INFO] [stderr]   --> src/Difficulty.rs:17:13
[INFO] [stderr]    |
[INFO] [stderr] 14 |             Self::Easy => "Easy",
[INFO] [stderr]    |             ---------- matches some of the same values
[INFO] [stderr] 15 |             Self::Medium => "Medium",
[INFO] [stderr]    |             ------------ matches some of the same values
[INFO] [stderr] 16 |             Self::Hard => "Hard",
[INFO] [stderr]    |             ---------- matches some of the same values
[INFO] [stderr] 17 |             _ => "",
[INFO] [stderr]    |             ^ collectively making this unreachable
[INFO] [stderr]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/AI.rs:20:13
[INFO] [stderr]    |
[INFO] [stderr] 20 |         for i in 0..5 {
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `x` is never read
[INFO] [stderr]   --> src/AI.rs:50:17
[INFO] [stderr]    |
[INFO] [stderr] 50 |         let mut x: u32 = 0;
[INFO] [stderr]    |                 ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `y` is never read
[INFO] [stderr]   --> src/AI.rs:51:17
[INFO] [stderr]    |
[INFO] [stderr] 51 |         let mut y: u32 = 0;
[INFO] [stderr]    |                 ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `x` is never read
[INFO] [stderr]    --> src/AI.rs:169:17
[INFO] [stderr]     |
[INFO] [stderr] 169 |         let mut x: u32 = 0;
[INFO] [stderr]     |                 ^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `y` is never read
[INFO] [stderr]    --> src/AI.rs:170:17
[INFO] [stderr]     |
[INFO] [stderr] 170 |         let mut y: u32 = 0;
[INFO] [stderr]     |                 ^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: module `Board` should have a snake case name
[INFO] [stderr]  --> src/main.rs:1:9
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub mod Board;
[INFO] [stderr]   |         ^^^^^ help: convert the identifier to snake case: `board`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: module `Game` should have a snake case name
[INFO] [stderr]  --> src/main.rs:2:9
[INFO] [stderr]   |
[INFO] [stderr] 2 | pub mod Game;
[INFO] [stderr]   |         ^^^^ help: convert the identifier to snake case: `game`
[INFO] [stderr] 
[INFO] [stderr] warning: module `Ship` should have a snake case name
[INFO] [stderr]  --> src/main.rs:3:9
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub mod Ship;
[INFO] [stderr]   |         ^^^^ help: convert the identifier to snake case (notice the capitalization): `ship`
[INFO] [stderr] 
[INFO] [stderr] warning: module `Difficulty` should have a snake case name
[INFO] [stderr]  --> src/main.rs:4:9
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub mod Difficulty;
[INFO] [stderr]   |         ^^^^^^^^^^ help: convert the identifier to snake case: `difficulty`
[INFO] [stderr] 
[INFO] [stderr] warning: module `AI` should have a snake case name
[INFO] [stderr]  --> src/main.rs:5:9
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub mod AI;
[INFO] [stderr]   |         ^^ help: convert the identifier to snake case: `ai`
[INFO] [stderr] 
[INFO] [stderr] warning: `battleships` (bin "battleships" test) generated 13 warnings (run `cargo fix --bin "battleships" --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/battleships-65235c3b0b67feb5)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "20b825988c40f8f3a1d51d5aec1c2974215895ed1beea52cec1009ddaf12b518", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20b825988c40f8f3a1d51d5aec1c2974215895ed1beea52cec1009ddaf12b518", kill_on_drop: false }`
[INFO] [stdout] 20b825988c40f8f3a1d51d5aec1c2974215895ed1beea52cec1009ddaf12b518
