Dec 17 11:22:26.621 INFO checking yogaxpto/tic-tac-rust against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 17 11:22:26.621 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-4/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/yogaxpto/tic-tac-rust:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 11:22:27.217 INFO [stdout] 98b4aab3669eb949bf0aa4f955d6f19fbe852866da3986592fec446eb7c26c7e
Dec 17 11:22:27.219 INFO running `"docker" "start" "-a" "98b4aab3669eb949bf0aa4f955d6f19fbe852866da3986592fec446eb7c26c7e"`
Dec 17 11:22:29.817 INFO [stderr]     Checking tic-tac-rust v0.1.0 (/opt/crater/workdir)
Dec 17 11:22:30.216 INFO [stderr] warning: unused variable: `bot_symbol`
Dec 17 11:22:30.216 INFO [stderr]    --> src/main.rs:202:9
Dec 17 11:22:30.216 INFO [stderr]     |
Dec 17 11:22:30.216 INFO [stderr] 202 |     let bot_symbol: State = State::opponent_symbol(player_symbol);
Dec 17 11:22:30.216 INFO [stderr]     |         ^^^^^^^^^^ help: consider using `_bot_symbol` instead
Dec 17 11:22:30.216 INFO [stderr]     |
Dec 17 11:22:30.216 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 17 11:22:30.216 INFO [stderr] 
Dec 17 11:22:30.216 INFO [stderr] warning: unused variable: `strategy`
Dec 17 11:22:30.216 INFO [stderr]    --> src/main.rs:169:28
Dec 17 11:22:30.216 INFO [stderr]     |
Dec 17 11:22:30.216 INFO [stderr] 169 |     pub fn bot_play(&self, strategy: Strategy) {
Dec 17 11:22:30.216 INFO [stderr]     |                            ^^^^^^^^ help: consider using `_strategy` instead
Dec 17 11:22:30.216 INFO [stderr] 
Dec 17 11:22:30.222 INFO [stderr] warning: unused variable: `bot_symbol`
Dec 17 11:22:30.222 INFO [stderr]    --> src/main.rs:202:9
Dec 17 11:22:30.222 INFO [stderr]     |
Dec 17 11:22:30.222 INFO [stderr] 202 |     let bot_symbol: State = State::opponent_symbol(player_symbol);
Dec 17 11:22:30.222 INFO [stderr]     |         ^^^^^^^^^^ help: consider using `_bot_symbol` instead
Dec 17 11:22:30.222 INFO [stderr]     |
Dec 17 11:22:30.232 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 17 11:22:30.233 INFO [stderr] 
Dec 17 11:22:30.233 INFO [stderr] warning: unused variable: `strategy`
Dec 17 11:22:30.234 INFO [stderr]    --> src/main.rs:169:28
Dec 17 11:22:30.234 INFO [stderr]     |
Dec 17 11:22:30.234 INFO [stderr] 169 |     pub fn bot_play(&self, strategy: Strategy) {
Dec 17 11:22:30.240 INFO [stderr]     |                            ^^^^^^^^ help: consider using `_strategy` instead
Dec 17 11:22:30.240 INFO [stderr] 
Dec 17 11:22:30.288 INFO [stderr] warning: method is never used: `child`
Dec 17 11:22:30.289 INFO [stderr]    --> src/main.rs:112:5
Dec 17 11:22:30.289 INFO [stderr]     |
Dec 17 11:22:30.289 INFO [stderr] 112 |     pub fn child(&mut self, symbol: State, row: usize, col: usize, player: State) -> Node {
Dec 17 11:22:30.289 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 11:22:30.289 INFO [stderr] warning: method is never used: `child`
Dec 17 11:22:30.289 INFO [stderr]    --> src/main.rs:112:5
Dec 17 11:22:30.289 INFO [stderr]     |
Dec 17 11:22:30.289 INFO [stderr] 112 |     pub fn child(&mut self, symbol: State, row: usize, col: usize, player: State) -> Node {
Dec 17 11:22:30.289 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 11:22:30.289 INFO [stderr]     |
Dec 17 11:22:30.289 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 17 11:22:30.289 INFO [stderr] 
Dec 17 11:22:30.296 INFO [stderr]     |
Dec 17 11:22:30.296 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 17 11:22:30.296 INFO [stderr] 
Dec 17 11:22:30.296 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 11:22:30.296 INFO [stderr]    --> src/main.rs:182:5
Dec 17 11:22:30.296 INFO [stderr]     |
Dec 17 11:22:30.296 INFO [stderr] 182 |     io.lock().read_line(&mut stdin);
Dec 17 11:22:30.296 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 11:22:30.296 INFO [stderr]     |
Dec 17 11:22:30.296 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 17 11:22:30.296 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 11:22:30.296 INFO [stderr] 
Dec 17 11:22:30.312 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 11:22:30.313 INFO [stderr]    --> src/main.rs:182:5
Dec 17 11:22:30.313 INFO [stderr]     |
Dec 17 11:22:30.313 INFO [stderr] 182 |     io.lock().read_line(&mut stdin);
Dec 17 11:22:30.313 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 11:22:30.314 INFO [stderr]     |
Dec 17 11:22:30.314 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 17 11:22:30.314 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 11:22:30.315 INFO [stderr] 
Dec 17 11:22:30.356 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.59s
Dec 17 11:22:31.525 INFO running `"docker" "inspect" "98b4aab3669eb949bf0aa4f955d6f19fbe852866da3986592fec446eb7c26c7e"`
Dec 17 11:22:31.958 INFO running `"docker" "rm" "-f" "98b4aab3669eb949bf0aa4f955d6f19fbe852866da3986592fec446eb7c26c7e"`
Dec 17 11:22:32.278 INFO [stdout] 98b4aab3669eb949bf0aa4f955d6f19fbe852866da3986592fec446eb7c26c7e