[INFO] cloning repository https://github.com/a1lu/battleship_rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/a1lu/battleship_rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fa1lu%2Fbattleship_rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fa1lu%2Fbattleship_rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ede34ddb022fca2988df73d78673b90b10e6bc01
[INFO] testing a1lu/battleship_rs against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fa1lu%2Fbattleship_rs" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/a1lu/battleship_rs on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/a1lu/battleship_rs
[INFO] finished tweaking git repo https://github.com/a1lu/battleship_rs
[INFO] tweaked toml for git repo https://github.com/a1lu/battleship_rs written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/a1lu/battleship_rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[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-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 377fbf49ba042e0e70d34ce3b85517b90240cb75d30196061b87a56a8bdbf9eb
[INFO] running `Command { std: "docker" "start" "-a" "377fbf49ba042e0e70d34ce3b85517b90240cb75d30196061b87a56a8bdbf9eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "377fbf49ba042e0e70d34ce3b85517b90240cb75d30196061b87a56a8bdbf9eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "377fbf49ba042e0e70d34ce3b85517b90240cb75d30196061b87a56a8bdbf9eb", kill_on_drop: false }`
[INFO] [stdout] 377fbf49ba042e0e70d34ce3b85517b90240cb75d30196061b87a56a8bdbf9eb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2fdc05d21d8028225ae27017e26af52421e62a1f3a23c17d6c04b2e4faca5925
[INFO] running `Command { std: "docker" "start" "-a" "2fdc05d21d8028225ae27017e26af52421e62a1f3a23c17d6c04b2e4faca5925", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr]    Compiling battleship v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]   --> src/board.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 45 |     pub fn board(&self) -> &Vec<Vec<u8>> {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stdout] 46 |         &self.board()
[INFO] [stdout]    |          ------------ recursive call site
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stdout]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Empty`
[INFO] [stdout]  --> src/board.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     Empty,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Miss`
[INFO] [stdout]  --> src/board.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Miss,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Hit`
[INFO] [stdout]  --> src/board.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     Hit,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Destroyed`
[INFO] [stdout]  --> src/board.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     Destroyed,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Ship`
[INFO] [stdout]  --> src/board.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     Ship
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Board`
[INFO] [stdout]   --> src/board.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct Board{
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/board.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn new(size:u8) -> Board {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert`
[INFO] [stdout]   --> src/board.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn insert(&mut self, point: &turn::Point, c: &Cell) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `hit`
[INFO] [stdout]   --> src/board.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 27 |     pub fn hit(&mut self, point: &turn::Point) {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `miss`
[INFO] [stdout]   --> src/board.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn miss(&mut self, point: &turn::Point) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `destroyed`
[INFO] [stdout]   --> src/board.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub fn destroyed(&mut self, points: &[turn::Point]) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `place_ship`
[INFO] [stdout]   --> src/board.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn place_ship(&mut self, point: &turn::Point) {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `board`
[INFO] [stdout]   --> src/board.rs:45:12
[INFO] [stdout]    |
[INFO] [stdout] 45 |     pub fn board(&self) -> &Vec<Vec<u8>> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `config`
[INFO] [stdout]   --> src/lib.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     config: Config,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.54s
[INFO] running `Command { std: "docker" "inspect" "2fdc05d21d8028225ae27017e26af52421e62a1f3a23c17d6c04b2e4faca5925", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2fdc05d21d8028225ae27017e26af52421e62a1f3a23c17d6c04b2e4faca5925", kill_on_drop: false }`
[INFO] [stdout] 2fdc05d21d8028225ae27017e26af52421e62a1f3a23c17d6c04b2e4faca5925
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b2e9bb592395e79f12f3b6537a47302be4b223128fa9c87e9f614a6c87ee8393
[INFO] running `Command { std: "docker" "start" "-a" "b2e9bb592395e79f12f3b6537a47302be4b223128fa9c87e9f614a6c87ee8393", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]   --> src/board.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 45 |     pub fn board(&self) -> &Vec<Vec<u8>> {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stdout] 46 |         &self.board()
[INFO] [stdout]    |          ------------ recursive call site
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stdout]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Empty`
[INFO] [stdout]  --> src/board.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     Empty,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling battleship v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `Miss`
[INFO] [stdout]  --> src/board.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Miss,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Hit`
[INFO] [stdout]  --> src/board.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     Hit,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Destroyed`
[INFO] [stdout]  --> src/board.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     Destroyed,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Ship`
[INFO] [stdout]  --> src/board.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     Ship
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Board`
[INFO] [stdout]   --> src/board.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct Board{
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/board.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn new(size:u8) -> Board {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert`
[INFO] [stdout]   --> src/board.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn insert(&mut self, point: &turn::Point, c: &Cell) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `hit`
[INFO] [stdout]   --> src/board.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 27 |     pub fn hit(&mut self, point: &turn::Point) {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `miss`
[INFO] [stdout]   --> src/board.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn miss(&mut self, point: &turn::Point) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `destroyed`
[INFO] [stdout]   --> src/board.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub fn destroyed(&mut self, points: &[turn::Point]) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `place_ship`
[INFO] [stdout]   --> src/board.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn place_ship(&mut self, point: &turn::Point) {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `board`
[INFO] [stdout]   --> src/board.rs:45:12
[INFO] [stdout]    |
[INFO] [stdout] 45 |     pub fn board(&self) -> &Vec<Vec<u8>> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `config`
[INFO] [stdout]   --> src/lib.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     config: Config,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]   --> src/board.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 45 |     pub fn board(&self) -> &Vec<Vec<u8>> {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stdout] 46 |         &self.board()
[INFO] [stdout]    |          ------------ recursive call site
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stdout]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Empty`
[INFO] [stdout]  --> src/board.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     Empty,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Miss`
[INFO] [stdout]  --> src/board.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Miss,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Hit`
[INFO] [stdout]  --> src/board.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     Hit,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Destroyed`
[INFO] [stdout]  --> src/board.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     Destroyed,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Ship`
[INFO] [stdout]  --> src/board.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     Ship
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Board`
[INFO] [stdout]   --> src/board.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct Board{
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/board.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn new(size:u8) -> Board {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert`
[INFO] [stdout]   --> src/board.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn insert(&mut self, point: &turn::Point, c: &Cell) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `hit`
[INFO] [stdout]   --> src/board.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 27 |     pub fn hit(&mut self, point: &turn::Point) {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `miss`
[INFO] [stdout]   --> src/board.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn miss(&mut self, point: &turn::Point) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `destroyed`
[INFO] [stdout]   --> src/board.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub fn destroyed(&mut self, points: &[turn::Point]) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `place_ship`
[INFO] [stdout]   --> src/board.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn place_ship(&mut self, point: &turn::Point) {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `board`
[INFO] [stdout]   --> src/board.rs:45:12
[INFO] [stdout]    |
[INFO] [stdout] 45 |     pub fn board(&self) -> &Vec<Vec<u8>> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `config`
[INFO] [stdout]   --> src/lib.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     config: Config,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.31s
[INFO] running `Command { std: "docker" "inspect" "b2e9bb592395e79f12f3b6537a47302be4b223128fa9c87e9f614a6c87ee8393", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2e9bb592395e79f12f3b6537a47302be4b223128fa9c87e9f614a6c87ee8393", kill_on_drop: false }`
[INFO] [stdout] b2e9bb592395e79f12f3b6537a47302be4b223128fa9c87e9f614a6c87ee8393
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b278813925a11e2d62d004f6803da97abff1b2ac739e759424ee17c52ff13050
[INFO] running `Command { std: "docker" "start" "-a" "b278813925a11e2d62d004f6803da97abff1b2ac739e759424ee17c52ff13050", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: function cannot return without recursing
[INFO] [stderr]   --> src/board.rs:45:5
[INFO] [stderr]    |
[INFO] [stderr] 45 |     pub fn board(&self) -> &Vec<Vec<u8>> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stderr] 46 |         &self.board()
[INFO] [stderr]    |          ------------ recursive call site
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stderr]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Empty`
[INFO] [stderr]  --> src/board.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     Empty,
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Miss`
[INFO] [stderr]  --> src/board.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     Miss,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Hit`
[INFO] [stderr]  --> src/board.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     Hit,
[INFO] [stderr]   |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Destroyed`
[INFO] [stderr]  --> src/board.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     Destroyed,
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Ship`
[INFO] [stderr]  --> src/board.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     Ship
[INFO] [stderr]   |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Board`
[INFO] [stderr]   --> src/board.rs:12:8
[INFO] [stderr]    |
[INFO] [stderr] 12 | struct Board{
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/board.rs:17:12
[INFO] [stderr]    |
[INFO] [stderr] 17 |     pub fn new(size:u8) -> Board {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `insert`
[INFO] [stderr]   --> src/board.rs:23:8
[INFO] [stderr]    |
[INFO] [stderr] 23 |     fn insert(&mut self, point: &turn::Point, c: &Cell) {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `hit`
[INFO] [stderr]   --> src/board.rs:27:12
[INFO] [stderr]    |
[INFO] [stderr] 27 |     pub fn hit(&mut self, point: &turn::Point) {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `miss`
[INFO] [stderr]   --> src/board.rs:31:12
[INFO] [stderr]    |
[INFO] [stderr] 31 |     pub fn miss(&mut self, point: &turn::Point) {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `destroyed`
[INFO] [stderr]   --> src/board.rs:35:12
[INFO] [stderr]    |
[INFO] [stderr] 35 |     pub fn destroyed(&mut self, points: &[turn::Point]) {
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `place_ship`
[INFO] [stderr]   --> src/board.rs:41:12
[INFO] [stderr]    |
[INFO] [stderr] 41 |     pub fn place_ship(&mut self, point: &turn::Point) {
[INFO] [stderr]    |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `board`
[INFO] [stderr]   --> src/board.rs:45:12
[INFO] [stderr]    |
[INFO] [stderr] 45 |     pub fn board(&self) -> &Vec<Vec<u8>> {
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `config`
[INFO] [stderr]   --> src/lib.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     config: Config,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `battleship` (lib) generated 15 warnings
[INFO] [stderr] warning: `battleship` (lib test) generated 15 warnings (15 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.52s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/battleship-1f33c5dfdadc7b80)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/battleship-d5a226b918ba9e24)
[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] [stderr]    Doc-tests battleship
[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] [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" "b278813925a11e2d62d004f6803da97abff1b2ac739e759424ee17c52ff13050", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b278813925a11e2d62d004f6803da97abff1b2ac739e759424ee17c52ff13050", kill_on_drop: false }`
[INFO] [stdout] b278813925a11e2d62d004f6803da97abff1b2ac739e759424ee17c52ff13050