[INFO] cloning repository https://github.com/rachelseng/rust_HeuristicGameTree [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rachelseng/rust_HeuristicGameTree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frachelseng%2Frust_HeuristicGameTree", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frachelseng%2Frust_HeuristicGameTree'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 179d23549cb1ef90bf74401d4f2bd5512919e801 [INFO] testing rachelseng/rust_HeuristicGameTree against 1.60.0 for beta-1.61-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frachelseng%2Frust_HeuristicGameTree" "/workspace/builds/worker-107/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-107/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/rachelseng/rust_HeuristicGameTree on toolchain 1.60.0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/rachelseng/rust_HeuristicGameTree [INFO] finished tweaking git repo https://github.com/rachelseng/rust_HeuristicGameTree [INFO] tweaked toml for git repo https://github.com/rachelseng/rust_HeuristicGameTree written to /workspace/builds/worker-107/source/Cargo.toml [INFO] crate git repo https://github.com/rachelseng/rust_HeuristicGameTree already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "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-107/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 89e2567de9653be3edf150e908c9eb1368f18c11a9f930e8ee096e05aec9a6e0 [INFO] running `Command { std: "docker" "start" "-a" "89e2567de9653be3edf150e908c9eb1368f18c11a9f930e8ee096e05aec9a6e0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "89e2567de9653be3edf150e908c9eb1368f18c11a9f930e8ee096e05aec9a6e0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "89e2567de9653be3edf150e908c9eb1368f18c11a9f930e8ee096e05aec9a6e0", kill_on_drop: false }` [INFO] [stdout] 89e2567de9653be3edf150e908c9eb1368f18c11a9f930e8ee096e05aec9a6e0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] e6d0e8fdb2d8dd4cbdff161a4c1b42f558540b9d6faaffa1e168c433777434ac [INFO] running `Command { std: "docker" "start" "-a" "e6d0e8fdb2d8dd4cbdff161a4c1b42f558540b9d6faaffa1e168c433777434ac", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling heuristic_game_tree v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib.rs:61:37 [INFO] [stdout] | [INFO] [stdout] 61 | fn possible_moves(&self) -> Box + '_>; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: use `dyn` [INFO] [stdout] | [INFO] [stdout] 61 - fn possible_moves(&self) -> Box + '_>; [INFO] [stdout] 61 + fn possible_moves(&self) -> Box + '_>; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/checkers.rs:304:37 [INFO] [stdout] | [INFO] [stdout] 304 | fn possible_moves(&self) -> Box)> + '_> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: use `dyn` [INFO] [stdout] | [INFO] [stdout] 304 - fn possible_moves(&self) -> Box)> + '_> { [INFO] [stdout] 304 + fn possible_moves(&self) -> Box)> + '_> { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/connect4.rs:10:37 [INFO] [stdout] | [INFO] [stdout] 10 | fn possible_moves(&self) -> Box + '_> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: use `dyn` [INFO] [stdout] | [INFO] [stdout] 10 - fn possible_moves(&self) -> Box + '_> { [INFO] [stdout] 10 + fn possible_moves(&self) -> Box + '_> { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/tictactoe.rs:22:37 [INFO] [stdout] | [INFO] [stdout] 22 | fn possible_moves(&self) -> Box + '_> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: use `dyn` [INFO] [stdout] | [INFO] [stdout] 22 - fn possible_moves(&self) -> Box + '_> { [INFO] [stdout] 22 + fn possible_moves(&self) -> Box + '_> { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 18.21s [INFO] running `Command { std: "docker" "inspect" "e6d0e8fdb2d8dd4cbdff161a4c1b42f558540b9d6faaffa1e168c433777434ac", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e6d0e8fdb2d8dd4cbdff161a4c1b42f558540b9d6faaffa1e168c433777434ac", kill_on_drop: false }` [INFO] [stdout] e6d0e8fdb2d8dd4cbdff161a4c1b42f558540b9d6faaffa1e168c433777434ac [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 9fe8b653ce8261a06d690a9777ea4cd8d98250d5a4dce6d40cc461c91aa5cc78 [INFO] running `Command { std: "docker" "start" "-a" "9fe8b653ce8261a06d690a9777ea4cd8d98250d5a4dce6d40cc461c91aa5cc78", kill_on_drop: false }` [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib.rs:61:37 [INFO] [stdout] | [INFO] [stdout] 61 | fn possible_moves(&self) -> Box + '_>; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: use `dyn` [INFO] [stdout] | [INFO] [stdout] 61 - fn possible_moves(&self) -> Box + '_>; [INFO] [stdout] 61 + fn possible_moves(&self) -> Box + '_>; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling heuristic_game_tree v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/checkers.rs:304:37 [INFO] [stdout] | [INFO] [stdout] 304 | fn possible_moves(&self) -> Box)> + '_> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: use `dyn` [INFO] [stdout] | [INFO] [stdout] 304 - fn possible_moves(&self) -> Box)> + '_> { [INFO] [stdout] 304 + fn possible_moves(&self) -> Box)> + '_> { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/connect4.rs:10:37 [INFO] [stdout] | [INFO] [stdout] 10 | fn possible_moves(&self) -> Box + '_> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: use `dyn` [INFO] [stdout] | [INFO] [stdout] 10 - fn possible_moves(&self) -> Box + '_> { [INFO] [stdout] 10 + fn possible_moves(&self) -> Box + '_> { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/tictactoe.rs:22:37 [INFO] [stdout] | [INFO] [stdout] 22 | fn possible_moves(&self) -> Box + '_> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: use `dyn` [INFO] [stdout] | [INFO] [stdout] 22 - fn possible_moves(&self) -> Box + '_> { [INFO] [stdout] 22 + fn possible_moves(&self) -> Box + '_> { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib.rs:61:37 [INFO] [stdout] | [INFO] [stdout] 61 | fn possible_moves(&self) -> Box + '_>; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: use `dyn` [INFO] [stdout] | [INFO] [stdout] 61 - fn possible_moves(&self) -> Box + '_>; [INFO] [stdout] 61 + fn possible_moves(&self) -> Box + '_>; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/checkers.rs:304:37 [INFO] [stdout] | [INFO] [stdout] 304 | fn possible_moves(&self) -> Box)> + '_> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: use `dyn` [INFO] [stdout] | [INFO] [stdout] 304 - fn possible_moves(&self) -> Box)> + '_> { [INFO] [stdout] 304 + fn possible_moves(&self) -> Box)> + '_> { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/connect4.rs:10:37 [INFO] [stdout] | [INFO] [stdout] 10 | fn possible_moves(&self) -> Box + '_> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: use `dyn` [INFO] [stdout] | [INFO] [stdout] 10 - fn possible_moves(&self) -> Box + '_> { [INFO] [stdout] 10 + fn possible_moves(&self) -> Box + '_> { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/tictactoe.rs:22:37 [INFO] [stdout] | [INFO] [stdout] 22 | fn possible_moves(&self) -> Box + '_> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: use `dyn` [INFO] [stdout] | [INFO] [stdout] 22 - fn possible_moves(&self) -> Box + '_> { [INFO] [stdout] 22 + fn possible_moves(&self) -> Box + '_> { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.84s [INFO] running `Command { std: "docker" "inspect" "9fe8b653ce8261a06d690a9777ea4cd8d98250d5a4dce6d40cc461c91aa5cc78", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9fe8b653ce8261a06d690a9777ea4cd8d98250d5a4dce6d40cc461c91aa5cc78", kill_on_drop: false }` [INFO] [stdout] 9fe8b653ce8261a06d690a9777ea4cd8d98250d5a4dce6d40cc461c91aa5cc78 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 90217baef15927d106aa3a499dd143866b5970604b10f0e7b06d21e72b9a18a9 [INFO] running `Command { std: "docker" "start" "-a" "90217baef15927d106aa3a499dd143866b5970604b10f0e7b06d21e72b9a18a9", kill_on_drop: false }` [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/lib.rs:61:37 [INFO] [stderr] | [INFO] [stderr] 61 | fn possible_moves(&self) -> Box + '_>; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stderr] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stderr] = note: for more information, see [INFO] [stderr] help: use `dyn` [INFO] [stderr] | [INFO] [stderr] 61 - fn possible_moves(&self) -> Box + '_>; [INFO] [stderr] 61 + fn possible_moves(&self) -> Box + '_>; [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/checkers.rs:304:37 [INFO] [stderr] | [INFO] [stderr] 304 | fn possible_moves(&self) -> Box)> + '_> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stderr] = note: for more information, see [INFO] [stderr] help: use `dyn` [INFO] [stderr] | [INFO] [stderr] 304 - fn possible_moves(&self) -> Box)> + '_> { [INFO] [stderr] 304 + fn possible_moves(&self) -> Box)> + '_> { [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/connect4.rs:10:37 [INFO] [stderr] | [INFO] [stderr] 10 | fn possible_moves(&self) -> Box + '_> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stderr] = note: for more information, see [INFO] [stderr] help: use `dyn` [INFO] [stderr] | [INFO] [stderr] 10 - fn possible_moves(&self) -> Box + '_> { [INFO] [stderr] 10 + fn possible_moves(&self) -> Box + '_> { [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/tictactoe.rs:22:37 [INFO] [stderr] | [INFO] [stderr] 22 | fn possible_moves(&self) -> Box + '_> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stderr] = note: for more information, see [INFO] [stderr] help: use `dyn` [INFO] [stderr] | [INFO] [stderr] 22 - fn possible_moves(&self) -> Box + '_> { [INFO] [stderr] 22 + fn possible_moves(&self) -> Box + '_> { [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: `heuristic_game_tree` (lib) generated 4 warnings [INFO] [stderr] warning: `heuristic_game_tree` (lib test) generated 4 warnings (4 duplicates) [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.44s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/heuristic_game_tree-29127b6521716af4) [INFO] [stdout] [INFO] [stdout] running 37 tests [INFO] [stdout] test checkers::check_tests::force_repeated_jump_test ... ok [INFO] [stdout] test checkers::check_tests::force_jump_test ... ok [INFO] [stdout] test checkers::check_tests::invalid_move_test ... ok [INFO] [stdout] test checkers::check_tests::heuristic_test ... ok [INFO] [stdout] test checkers::check_tests::jump_piece_test ... ok [INFO] [stdout] test checkers::check_tests::print_board_test ... ok [INFO] [stdout] test connect4::con_tests::horiz_test ... ok [INFO] [stdout] test connect4::con_tests::board_not_full2_test ... ok [INFO] [stdout] test connect4::con_tests::board_not_full_test ... ok [INFO] [stdout] test connect4::con_tests::invalid_con_test ... ok [INFO] [stdout] test connect4::con_tests::lose_con_test ... ok [INFO] [stdout] test connect4::con_tests::new_con_test ... ok [INFO] [stdout] test connect4::con_tests::ldiag_test ... ok [INFO] [stdout] test connect4::con_tests::print_piece_x_con_test ... ok [INFO] [stdout] test connect4::con_tests::rdiag_test ... ok [INFO] [stdout] test connect4::con_tests::store_con_test ... ok [INFO] [stdout] test connect4::con_tests::validrow_con_test ... ok [INFO] [stdout] test checkers::check_tests::move_piece_test ... ok [INFO] [stdout] test connect4::con_tests::valid_con_test ... ok [INFO] [stdout] test connect4::con_tests::vert_test ... ok [INFO] [stdout] test connect4::con_tests::win_vert_con_test ... ok [INFO] [stdout] test connect4::con_tests::win_horiz_con_test ... ok [INFO] [stdout] test checkers::check_tests::make_kings_test ... ok [INFO] [stdout] test checkers::check_tests::valid_move_test ... ok [INFO] [stdout] test general_game::gen_game_tests::o_printcheck ... ok [INFO] [stdout] test checkers::check_tests::no_winner_test ... ok [INFO] [stdout] test general_game::gen_game_tests::x_check ... ok [INFO] [stdout] test general_game::gen_game_tests::x_printcheck ... ok [INFO] [stdout] test tictactoe::tic_tests::board_not_full2_test ... ok [INFO] [stdout] test tictactoe::tic_tests::board_not_full_test ... ok [INFO] [stdout] test tictactoe::tic_tests::invalid_tic_test ... ok [INFO] [stdout] test tictactoe::tic_tests::new_tic_test ... ok [INFO] [stdout] test tictactoe::tic_tests::print_piece_empty_tic_test ... ok [INFO] [stdout] test tictactoe::tic_tests::print_piece_o_tic_test ... ok [INFO] [stdout] test tictactoe::tic_tests::print_piece_x_tic_test ... ok [INFO] [stdout] test tictactoe::tic_tests::store_tic_test ... ok [INFO] [stdout] test tictactoe::tic_tests::valid_tic_test ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 37 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s [INFO] [stdout] [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/heuristic_game_tree-9230649cbc00f57d) [INFO] [stdout] [INFO] [stdout] running 10 tests [INFO] [stdout] test start_tests::choose_game_check ... ok [INFO] [stdout] test start_tests::choose_game_con ... ok [INFO] [stdout] test start_tests::choose_game_check_cap ... ok [INFO] [stdout] test start_tests::difficulty_basic_easy ... ok [INFO] [stdout] test start_tests::choose_game_tic ... ok [INFO] [stdout] test start_tests::difficulty_basic_hard ... ok [INFO] [stdout] test start_tests::difficulty_basic_med ... ok [INFO] [stdout] test start_tests::difficulty_basic_no_input ... ok [INFO] [stdout] test start_tests::difficulty_basic_wrong_input ... ok [INFO] [stdout] test start_tests::difficulty_capital ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s [INFO] [stdout] [INFO] [stderr] Doc-tests heuristic_game_tree [INFO] [stdout] [INFO] [stdout] running 4 tests [INFO] [stdout] test src/general_game.rs - general_game::print_piece (line 52) ... ok [INFO] [stdout] test src/general_game.rs - general_game::print_piece (line 61) ... ok [INFO] [stdout] test src/minimax.rs - minimax::minimax_search (line 28) ... ok [INFO] [stdout] test src/lib.rs - HeuristicGameTree (line 21) ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.88s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "90217baef15927d106aa3a499dd143866b5970604b10f0e7b06d21e72b9a18a9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "90217baef15927d106aa3a499dd143866b5970604b10f0e7b06d21e72b9a18a9", kill_on_drop: false }` [INFO] [stdout] 90217baef15927d106aa3a499dd143866b5970604b10f0e7b06d21e72b9a18a9