[INFO] cloning repository https://github.com/sa-kei728/tic_tac_toe
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sa-kei728/tic_tac_toe" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsa-kei728%2Ftic_tac_toe", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsa-kei728%2Ftic_tac_toe'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ff4b45b415b73c471103df1d44f8a611a089043c
[INFO] testing sa-kei728/tic_tac_toe against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsa-kei728%2Ftic_tac_toe" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sa-kei728/tic_tac_toe on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sa-kei728/tic_tac_toe
[INFO] finished tweaking git repo https://github.com/sa-kei728/tic_tac_toe
[INFO] tweaked toml for git repo https://github.com/sa-kei728/tic_tac_toe written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/sa-kei728/tic_tac_toe already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1d918dd002fa1ce5825fa88acdf0578b19b91fe3a6ebccdb1a3fc2de19c11a73
[INFO] running `Command { std: "docker" "start" "-a" "1d918dd002fa1ce5825fa88acdf0578b19b91fe3a6ebccdb1a3fc2de19c11a73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1d918dd002fa1ce5825fa88acdf0578b19b91fe3a6ebccdb1a3fc2de19c11a73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d918dd002fa1ce5825fa88acdf0578b19b91fe3a6ebccdb1a3fc2de19c11a73", kill_on_drop: false }`
[INFO] [stdout] 1d918dd002fa1ce5825fa88acdf0578b19b91fe3a6ebccdb1a3fc2de19c11a73
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] de14167cd8d6752d0234a39fab696e1e9c6d92c78a39dfc64be8a46f83ab51a8
[INFO] running `Command { std: "docker" "start" "-a" "de14167cd8d6752d0234a39fab696e1e9c6d92c78a39dfc64be8a46f83ab51a8", kill_on_drop: false }`
[INFO] [stderr]    Compiling tic_tac_toe v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/board.rs:131:90
[INFO] [stdout]     |
[INFO] [stdout] 131 |             std::mem::replace(&mut self.board_matrix[row][col], player.get_piece_type());;
[INFO] [stdout]     |                                                                                          ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/board.rs:131:13
[INFO] [stdout]     |
[INFO] [stdout] 131 |             std::mem::replace(&mut self.board_matrix[row][col], player.get_piece_type());;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.89s
[INFO] running `Command { std: "docker" "inspect" "de14167cd8d6752d0234a39fab696e1e9c6d92c78a39dfc64be8a46f83ab51a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de14167cd8d6752d0234a39fab696e1e9c6d92c78a39dfc64be8a46f83ab51a8", kill_on_drop: false }`
[INFO] [stdout] de14167cd8d6752d0234a39fab696e1e9c6d92c78a39dfc64be8a46f83ab51a8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a6bfa0809b8ba9d60e2b6988cdc1437f9bcf587e7a4b8404426ad72e73389e7b
[INFO] running `Command { std: "docker" "start" "-a" "a6bfa0809b8ba9d60e2b6988cdc1437f9bcf587e7a4b8404426ad72e73389e7b", kill_on_drop: false }`
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/board.rs:131:90
[INFO] [stdout]     |
[INFO] [stdout] 131 |             std::mem::replace(&mut self.board_matrix[row][col], player.get_piece_type());;
[INFO] [stdout]     |                                                                                          ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling tic_tac_toe v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/board.rs:131:13
[INFO] [stdout]     |
[INFO] [stdout] 131 |             std::mem::replace(&mut self.board_matrix[row][col], player.get_piece_type());;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/board.rs:131:90
[INFO] [stdout]     |
[INFO] [stdout] 131 |             std::mem::replace(&mut self.board_matrix[row][col], player.get_piece_type());;
[INFO] [stdout]     |                                                                                          ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/board.rs:131:13
[INFO] [stdout]     |
[INFO] [stdout] 131 |             std::mem::replace(&mut self.board_matrix[row][col], player.get_piece_type());;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.36s
[INFO] running `Command { std: "docker" "inspect" "a6bfa0809b8ba9d60e2b6988cdc1437f9bcf587e7a4b8404426ad72e73389e7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6bfa0809b8ba9d60e2b6988cdc1437f9bcf587e7a4b8404426ad72e73389e7b", kill_on_drop: false }`
[INFO] [stdout] a6bfa0809b8ba9d60e2b6988cdc1437f9bcf587e7a4b8404426ad72e73389e7b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a7b802ab4141cb913a1e2e9bf54e69c1b36cce58af9234dd5ff1995d19fc5bbc
[INFO] running `Command { std: "docker" "start" "-a" "a7b802ab4141cb913a1e2e9bf54e69c1b36cce58af9234dd5ff1995d19fc5bbc", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stdout] running 0 tests
[INFO] [stderr]    --> src/board.rs:131:90
[INFO] [stdout] 
[INFO] [stderr]     |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 131 |             std::mem::replace(&mut self.board_matrix[row][col], player.get_piece_type());;
[INFO] [stdout] 
[INFO] [stderr]     |                                                                                          ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stderr]     |
[INFO] [stdout] running 0 tests
[INFO] [stderr]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout] 
[INFO] [stderr]    --> src/board.rs:131:13
[INFO] [stderr]     |
[INFO] [stderr] 131 |             std::mem::replace(&mut self.board_matrix[row][col], player.get_piece_type());;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: `tic_tac_toe` (lib) generated 2 warnings
[INFO] [stderr] warning: `tic_tac_toe` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/tic_tac_toe-8a7834fa944d3cf5)
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/tic_tac_toe-f44bdb93118ba77c)
[INFO] [stderr]    Doc-tests tic_tac_toe
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]    --> /opt/rustwide/workdir/src/board.rs:131:90
[INFO] [stderr]     |
[INFO] [stderr] 131 |             std::mem::replace(&mut self.board_matrix[row][col], player.get_piece_type());;
[INFO] [stderr]     |                                                                                          ^ help: remove this semicolon
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[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" "a7b802ab4141cb913a1e2e9bf54e69c1b36cce58af9234dd5ff1995d19fc5bbc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7b802ab4141cb913a1e2e9bf54e69c1b36cce58af9234dd5ff1995d19fc5bbc", kill_on_drop: false }`
[INFO] [stdout] a7b802ab4141cb913a1e2e9bf54e69c1b36cce58af9234dd5ff1995d19fc5bbc