[INFO] cloning repository https://github.com/mikasaurus2/miktactoe
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mikasaurus2/miktactoe" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmikasaurus2%2Fmiktactoe", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmikasaurus2%2Fmiktactoe'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d6dd82b831011d8373e66127ab55f2c9023e247c
[INFO] checking mikasaurus2/miktactoe against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmikasaurus2%2Fmiktactoe" "/workspace/builds/worker-76/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-76/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mikasaurus2/miktactoe on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mikasaurus2/miktactoe
[INFO] finished tweaking git repo https://github.com/mikasaurus2/miktactoe
[INFO] tweaked toml for git repo https://github.com/mikasaurus2/miktactoe written to /workspace/builds/worker-76/source/Cargo.toml
[INFO] crate git repo https://github.com/mikasaurus2/miktactoe already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "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-76/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-76/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" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2ad6f6c57ae3d51923bc3bfc65eab81d231c566ac0d69905fe2a329745bca03b
[INFO] running `Command { std: "docker" "start" "-a" "2ad6f6c57ae3d51923bc3bfc65eab81d231c566ac0d69905fe2a329745bca03b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2ad6f6c57ae3d51923bc3bfc65eab81d231c566ac0d69905fe2a329745bca03b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ad6f6c57ae3d51923bc3bfc65eab81d231c566ac0d69905fe2a329745bca03b", kill_on_drop: false }`
[INFO] [stdout] 2ad6f6c57ae3d51923bc3bfc65eab81d231c566ac0d69905fe2a329745bca03b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-76/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-76/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" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 473a209eb3ce5685c53b08ab8e8709a4e7ad7f8bf0918a101a400b0a8fea0cf8
[INFO] running `Command { std: "docker" "start" "-a" "473a209eb3ce5685c53b08ab8e8709a4e7ad7f8bf0918a101a400b0a8fea0cf8", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.105
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.14
[INFO] [stderr]     Checking itertools v0.10.1
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking miktactoe v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `rand::thread_rng`
[INFO] [stdout]  --> src/board.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rand::thread_rng;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ai_basic::BasicAI`, `ai_forking::ForkingAI`, `ai_random::RandomAI`, `human::Human`
[INFO] [stdout]  --> src/game.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     ai_basic::BasicAI, ai_forking::ForkingAI, ai_optimal::OptimalAI, ai_random::RandomAI,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^                         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 9 |     human::Human,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::thread_rng`
[INFO] [stdout]  --> src/board.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rand::thread_rng;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ai_basic::BasicAI`, `ai_forking::ForkingAI`, `ai_random::RandomAI`, `human::Human`
[INFO] [stdout]  --> src/game.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     ai_basic::BasicAI, ai_forking::ForkingAI, ai_optimal::OptimalAI, ai_random::RandomAI,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^                         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 9 |     human::Human,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `print_info`
[INFO] [stdout]    --> src/board.rs:325:12
[INFO] [stdout]     |
[INFO] [stdout] 325 |     pub fn print_info(&self) {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `print`
[INFO] [stdout]    --> src/board.rs:482:12
[INFO] [stdout]     |
[INFO] [stdout] 482 |     pub fn print(&self) {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/player/human.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn new(name: &str, marker: Marker) -> Human {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_valid_move`
[INFO] [stdout]   --> src/player/human.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn get_valid_move(&self, board: &Board) -> CellCoord {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `RandomAI`
[INFO] [stdout]  --> src/player/ai_random.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct RandomAI<'a> {
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/player/ai_random.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn new(name: &str, marker: Marker) -> RandomAI {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_valid_move`
[INFO] [stdout]   --> src/player/ai_random.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub fn get_valid_move(&mut self, board: &Board) -> CellCoord {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `BasicAI`
[INFO] [stdout]  --> src/player/ai_basic.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct BasicAI<'a> {
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/player/ai_basic.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn new(name: &str, marker: Marker) -> BasicAI {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_valid_move`
[INFO] [stdout]   --> src/player/ai_basic.rs:33:12
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn get_valid_move(&mut self, board: &Board) -> CellCoord {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `ForkingAI`
[INFO] [stdout]  --> src/player/ai_forking.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct ForkingAI<'a> {
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/player/ai_forking.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn new(name: &str, marker: Marker) -> ForkingAI {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_valid_move`
[INFO] [stdout]   --> src/player/ai_forking.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub fn get_valid_move(&mut self, board: &Board) -> CellCoord {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `print_info`
[INFO] [stdout]    --> src/board.rs:325:12
[INFO] [stdout]     |
[INFO] [stdout] 325 |     pub fn print_info(&self) {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `print`
[INFO] [stdout]    --> src/board.rs:482:12
[INFO] [stdout]     |
[INFO] [stdout] 482 |     pub fn print(&self) {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/player/human.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn new(name: &str, marker: Marker) -> Human {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_valid_move`
[INFO] [stdout]   --> src/player/human.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn get_valid_move(&self, board: &Board) -> CellCoord {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `RandomAI`
[INFO] [stdout]  --> src/player/ai_random.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct RandomAI<'a> {
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/player/ai_random.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn new(name: &str, marker: Marker) -> RandomAI {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_valid_move`
[INFO] [stdout]   --> src/player/ai_random.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub fn get_valid_move(&mut self, board: &Board) -> CellCoord {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `BasicAI`
[INFO] [stdout]  --> src/player/ai_basic.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct BasicAI<'a> {
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/player/ai_basic.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn new(name: &str, marker: Marker) -> BasicAI {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_valid_move`
[INFO] [stdout]   --> src/player/ai_basic.rs:33:12
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn get_valid_move(&mut self, board: &Board) -> CellCoord {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `ForkingAI`
[INFO] [stdout]  --> src/player/ai_forking.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct ForkingAI<'a> {
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/player/ai_forking.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn new(name: &str, marker: Marker) -> ForkingAI {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_valid_move`
[INFO] [stdout]   --> src/player/ai_forking.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub fn get_valid_move(&mut self, board: &Board) -> CellCoord {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.98s
[INFO] running `Command { std: "docker" "inspect" "473a209eb3ce5685c53b08ab8e8709a4e7ad7f8bf0918a101a400b0a8fea0cf8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "473a209eb3ce5685c53b08ab8e8709a4e7ad7f8bf0918a101a400b0a8fea0cf8", kill_on_drop: false }`
[INFO] [stdout] 473a209eb3ce5685c53b08ab8e8709a4e7ad7f8bf0918a101a400b0a8fea0cf8