[INFO] updating cached repository yogaxpto/tic-tac-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/yogaxpto/tic-tac-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/yogaxpto/tic-tac-rust" "work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/yogaxpto/tic-tac-rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/yogaxpto/tic-tac-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/yogaxpto/tic-tac-rust" "work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/yogaxpto/tic-tac-rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/yogaxpto/tic-tac-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c5a6301fe469a012f3512dc538167d56d6c98353
[INFO] sha for GitHub repo yogaxpto/tic-tac-rust: c5a6301fe469a012f3512dc538167d56d6c98353
[INFO] validating manifest of yogaxpto/tic-tac-rust on toolchain master#a850a426491e14186af2250549bf41256b5938d2
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of yogaxpto/tic-tac-rust on toolchain try#06a150c7d11500b41499224f165e9de1de096768
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+06a150c7d11500b41499224f165e9de1de096768-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing yogaxpto/tic-tac-rust
[INFO] finished frobbing yogaxpto/tic-tac-rust
[INFO] frobbed toml for yogaxpto/tic-tac-rust written to work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/yogaxpto/tic-tac-rust/Cargo.toml
[INFO] started frobbing yogaxpto/tic-tac-rust
[INFO] finished frobbing yogaxpto/tic-tac-rust
[INFO] frobbed toml for yogaxpto/tic-tac-rust written to work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/yogaxpto/tic-tac-rust/Cargo.toml
[INFO] crate yogaxpto/tic-tac-rust already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+06a150c7d11500b41499224f165e9de1de096768-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking yogaxpto/tic-tac-rust against master#a850a426491e14186af2250549bf41256b5938d2 for pr-60162
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60162/worker-3/master#a850a426491e14186af2250549bf41256b5938d2:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/yogaxpto/tic-tac-rust:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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" "+a850a426491e14186af2250549bf41256b5938d2-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] c4e528c889120944732b7cccd439cdc04e72e5c4ce786900e8b72e157d46f0d7
[INFO] running `"docker" "start" "-a" "c4e528c889120944732b7cccd439cdc04e72e5c4ce786900e8b72e157d46f0d7"`
[INFO] [stderr]     Checking tic-tac-rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `bot_symbol`
[INFO] [stderr]    --> src/main.rs:202:9
[INFO] [stderr]     |
[INFO] [stderr] 202 |     let bot_symbol: State = State::opponent_symbol(player_symbol);
[INFO] [stderr]     |         ^^^^^^^^^^ help: consider prefixing with an underscore: `_bot_symbol`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `strategy`
[INFO] [stderr]    --> src/main.rs:169:28
[INFO] [stderr]     |
[INFO] [stderr] 169 |     pub fn bot_play(&self, strategy: Strategy) {
[INFO] [stderr]     |                            ^^^^^^^^ help: consider prefixing with an underscore: `_strategy`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `child`
[INFO] [stderr]    --> src/main.rs:112:5
[INFO] [stderr]     |
[INFO] [stderr] 112 |     pub fn child(&mut self, symbol: State, row: usize, col: usize, player: State) -> Node {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/main.rs:182:5
[INFO] [stderr]     |
[INFO] [stderr] 182 |     io.lock().read_line(&mut stdin);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `bot_symbol`
[INFO] [stderr]    --> src/main.rs:202:9
[INFO] [stderr]     |
[INFO] [stderr] 202 |     let bot_symbol: State = State::opponent_symbol(player_symbol);
[INFO] [stderr]     |         ^^^^^^^^^^ help: consider prefixing with an underscore: `_bot_symbol`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `strategy`
[INFO] [stderr]    --> src/main.rs:169:28
[INFO] [stderr]     |
[INFO] [stderr] 169 |     pub fn bot_play(&self, strategy: Strategy) {
[INFO] [stderr]     |                            ^^^^^^^^ help: consider prefixing with an underscore: `_strategy`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `child`
[INFO] [stderr]    --> src/main.rs:112:5
[INFO] [stderr]     |
[INFO] [stderr] 112 |     pub fn child(&mut self, symbol: State, row: usize, col: usize, player: State) -> Node {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/main.rs:182:5
[INFO] [stderr]     |
[INFO] [stderr] 182 |     io.lock().read_line(&mut stdin);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.55s
[INFO] running `"docker" "inspect" "c4e528c889120944732b7cccd439cdc04e72e5c4ce786900e8b72e157d46f0d7"`
[INFO] running `"docker" "rm" "-f" "c4e528c889120944732b7cccd439cdc04e72e5c4ce786900e8b72e157d46f0d7"`
[INFO] [stdout] c4e528c889120944732b7cccd439cdc04e72e5c4ce786900e8b72e157d46f0d7