[INFO] fetching crate play-2048 1.0.0... [INFO] testing play-2048-1.0.0 against beta-2025-09-21 for beta-1.91-3 [INFO] extracting crate play-2048 1.0.0 into /workspace/builds/worker-7-tc2/source [INFO] started tweaking crates.io crate play-2048 1.0.0 [INFO] finished tweaking crates.io crate play-2048 1.0.0 [INFO] tweaked toml for crates.io crate play-2048 1.0.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate play-2048 1.0.0 on toolchain beta-2025-09-21 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate crates.io crate play-2048 1.0.0 already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 0ce0acc7dba07b4f8a0653085448509759a4001f743092a558d52803f28b6ccc [INFO] running `Command { std: "docker" "start" "-a" "0ce0acc7dba07b4f8a0653085448509759a4001f743092a558d52803f28b6ccc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "0ce0acc7dba07b4f8a0653085448509759a4001f743092a558d52803f28b6ccc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0ce0acc7dba07b4f8a0653085448509759a4001f743092a558d52803f28b6ccc", kill_on_drop: false }` [INFO] [stdout] 0ce0acc7dba07b4f8a0653085448509759a4001f743092a558d52803f28b6ccc [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 2cce08c4849b0cb8c4c4b860c40e7ebad0fed0eae9736b6e41644126842c71e4 [INFO] running `Command { std: "docker" "start" "-a" "2cce08c4849b0cb8c4c4b860c40e7ebad0fed0eae9736b6e41644126842c71e4", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.69 [INFO] [stderr] Compiling getrandom v0.1.14 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Compiling unicode-width v0.1.7 [INFO] [stderr] Compiling vec_map v0.8.1 [INFO] [stderr] Compiling numtoa v0.1.0 [INFO] [stderr] Compiling ansi_term v0.11.0 [INFO] [stderr] Compiling strsim v0.8.0 [INFO] [stderr] Compiling textwrap v0.11.0 [INFO] [stderr] Compiling atty v0.2.14 [INFO] [stderr] Compiling termion v1.5.5 [INFO] [stderr] Compiling clap v2.33.0 [INFO] [stderr] Compiling rand_core v0.5.1 [INFO] [stderr] Compiling rand_chacha v0.2.2 [INFO] [stderr] Compiling rand v0.7.3 [INFO] [stderr] Compiling play-2048 v1.0.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.23s [INFO] running `Command { std: "docker" "inspect" "2cce08c4849b0cb8c4c4b860c40e7ebad0fed0eae9736b6e41644126842c71e4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2cce08c4849b0cb8c4c4b860c40e7ebad0fed0eae9736b6e41644126842c71e4", kill_on_drop: false }` [INFO] [stdout] 2cce08c4849b0cb8c4c4b860c40e7ebad0fed0eae9736b6e41644126842c71e4 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 4d62ab0f9ace9cc20f1584c8987a09f0d847c0d5f8bc3426c12246ac452bea6d [INFO] running `Command { std: "docker" "start" "-a" "4d62ab0f9ace9cc20f1584c8987a09f0d847c0d5f8bc3426c12246ac452bea6d", kill_on_drop: false }` [INFO] [stderr] Compiling autocfg v1.0.0 [INFO] [stderr] Compiling maybe-uninit v2.0.0 [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Compiling serde v1.0.106 [INFO] [stderr] Compiling memchr v2.3.3 [INFO] [stderr] Compiling ryu v1.0.4 [INFO] [stderr] Compiling byteorder v1.3.4 [INFO] [stderr] Compiling rayon-core v1.7.0 [INFO] [stderr] Compiling itoa v0.4.5 [INFO] [stderr] Compiling either v1.5.3 [INFO] [stderr] Compiling syn v1.0.18 [INFO] [stderr] Compiling quote v1.0.3 [INFO] [stderr] Compiling num_cpus v1.13.0 [INFO] [stderr] Compiling regex-syntax v0.6.17 [INFO] [stderr] Compiling walkdir v2.3.1 [INFO] [stderr] Compiling oorandom v11.1.0 [INFO] [stderr] Compiling itertools v0.9.0 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Compiling csv-core v0.1.10 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Compiling regex-automata v0.1.9 [INFO] [stderr] Compiling crossbeam-utils v0.7.2 [INFO] [stderr] Compiling memoffset v0.5.4 [INFO] [stderr] Compiling crossbeam-epoch v0.8.2 [INFO] [stderr] Compiling num-traits v0.2.11 [INFO] [stderr] Compiling cast v0.2.3 [INFO] [stderr] Compiling crossbeam-queue v0.2.1 [INFO] [stderr] Compiling criterion-plot v0.4.2 [INFO] [stderr] Compiling crossbeam-deque v0.7.3 [INFO] [stderr] Compiling plotters v0.2.12 [INFO] [stderr] Compiling rayon v1.3.0 [INFO] [stderr] Compiling regex v1.3.7 [INFO] [stderr] Compiling bstr v0.2.12 [INFO] [stderr] Compiling serde_json v1.0.51 [INFO] [stderr] Compiling csv v1.1.3 [INFO] [stderr] Compiling serde_derive v1.0.106 [INFO] [stderr] Compiling tinytemplate v1.0.4 [INFO] [stderr] Compiling criterion v0.3.2 [INFO] [stderr] Compiling play-2048 v1.0.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused return value of `must_use` that must be used [INFO] [stdout] --> src/board.rs:830:9 [INFO] [stdout] | [INFO] [stdout] 830 | format!("{}", board); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 830 | let _ = format!("{}", board); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `must_use` that must be used [INFO] [stdout] --> src/board.rs:830:9 [INFO] [stdout] | [INFO] [stdout] 830 | format!("{}", board); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 830 | let _ = format!("{}", board); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 23.61s [INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: criterion v0.3.2 [INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1` [INFO] running `Command { std: "docker" "inspect" "4d62ab0f9ace9cc20f1584c8987a09f0d847c0d5f8bc3426c12246ac452bea6d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4d62ab0f9ace9cc20f1584c8987a09f0d847c0d5f8bc3426c12246ac452bea6d", kill_on_drop: false }` [INFO] [stdout] 4d62ab0f9ace9cc20f1584c8987a09f0d847c0d5f8bc3426c12246ac452bea6d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] ca432809680a17f486060fc23bf3762c83af5ea22d58d21c57c583d7e3af7b57 [INFO] running `Command { std: "docker" "start" "-a" "ca432809680a17f486060fc23bf3762c83af5ea22d58d21c57c583d7e3af7b57", kill_on_drop: false }` [INFO] [stderr] warning: unused return value of `must_use` that must be used [INFO] [stderr] --> src/board.rs:830:9 [INFO] [stderr] | [INFO] [stderr] 830 | format!("{}", board); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] help: use `let _ = ...` to ignore the resulting value [INFO] [stderr] | [INFO] [stderr] 830 | let _ = format!("{}", board); [INFO] [stderr] | +++++++ [INFO] [stderr] [INFO] [stderr] warning: `play-2048` (bin "play-2048" test) generated 1 warning [INFO] [stderr] warning: `play-2048` (lib test) generated 1 warning (1 duplicate) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.11s [INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: criterion v0.3.2 [INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1` [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/play_2048-0347f305b8d0e4df) [INFO] [stdout] [INFO] [stdout] running 30 tests [INFO] [stdout] test board::tests::should_convert_vec_to_board ... ok [INFO] [stdout] test board::tests::should_count_empty_tiles ... ok [INFO] [stdout] test board::tests::should_get_columns ... ok [INFO] [stdout] test board::tests::should_get_empty_tiles ... ok [INFO] [stdout] test board::tests::should_display_board ... ok [INFO] [stdout] test board::tests::should_get_exponent_value ... ok [INFO] [stdout] test board::tests::should_get_max_value ... ok [INFO] [stdout] test board::tests::should_get_rows ... ok [INFO] [stdout] test board::tests::should_iterate_over_exponents ... ok [INFO] [stdout] test board::tests::should_get_value ... ok [INFO] [stdout] test evaluators::tests::test_alignment_evaluator ... ok [INFO] [stdout] test evaluators::tests::test_empty_tile_evaluator ... ok [INFO] [stdout] test evaluators::tests::test_monotonicity_evaluator ... ok [INFO] [stdout] test board::tests::should_display_board_for_debug ... ok [INFO] [stdout] test board::tests::should_use_binary_representation ... ok [INFO] [stdout] test evaluators::tests::test_combined_evaluator ... ok [INFO] [stdout] test board::tests::should_count_distinct_tiles ... ok [INFO] [stdout] test board::tests::should_set_value_by_exponent ... ok [INFO] [stdout] test utils::tests::should_get_left_move ... ok [INFO] [stdout] test utils::tests::should_get_right_move ... ok [INFO] [stdout] test utils::tests::should_invert_row ... ok [INFO] [stdout] test utils::tests::should_set_value_in_row ... ok [INFO] [stdout] test board::tests::should_set_value ... ok [INFO] [stdout] test board::tests::should_move_left ... ok [INFO] [stdout] test board::tests::should_move_up ... ok [INFO] [stdout] test board::tests::should_move_right ... ok [INFO] [stdout] test board::tests::should_move_down ... ok [INFO] [stdout] test board::tests::should_move_with_high_values ... ok [INFO] [stdout] test evaluators::tests::test_precomputed_inversion_evaluator ... ok [INFO] [stdout] test solver::tests::test_next_best_move ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 30 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.07s [INFO] [stdout] [INFO] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/play_2048-35e831500b984301) [INFO] [stdout] [INFO] [stdout] running 30 tests [INFO] [stdout] test board::tests::should_convert_vec_to_board ... ok [INFO] [stdout] test board::tests::should_count_distinct_tiles ... ok [INFO] [stdout] test board::tests::should_display_board ... ok [INFO] [stdout] test board::tests::should_display_board_for_debug ... ok [INFO] [stdout] test board::tests::should_get_columns ... ok [INFO] [stdout] test board::tests::should_get_exponent_value ... ok [INFO] [stdout] test board::tests::should_get_empty_tiles ... ok [INFO] [stdout] test board::tests::should_get_max_value ... ok [INFO] [stdout] test board::tests::should_count_empty_tiles ... ok [INFO] [stdout] test board::tests::should_get_rows ... ok [INFO] [stdout] test board::tests::should_get_value ... ok [INFO] [stdout] test board::tests::should_set_value ... ok [INFO] [stdout] test board::tests::should_set_value_by_exponent ... ok [INFO] [stdout] test board::tests::should_use_binary_representation ... ok [INFO] [stdout] test evaluators::tests::test_alignment_evaluator ... ok [INFO] [stdout] test evaluators::tests::test_combined_evaluator ... ok [INFO] [stdout] test utils::tests::should_invert_row ... ok [INFO] [stdout] test evaluators::tests::test_empty_tile_evaluator ... ok [INFO] [stdout] test utils::tests::should_get_left_move ... ok [INFO] [stdout] test utils::tests::should_set_value_in_row ... ok [INFO] [stdout] test utils::tests::should_get_right_move ... ok [INFO] [stdout] test board::tests::should_iterate_over_exponents ... ok [INFO] [stdout] test evaluators::tests::test_monotonicity_evaluator ... ok [INFO] [stdout] test evaluators::tests::test_precomputed_inversion_evaluator ... ok [INFO] [stdout] test board::tests::should_move_up ... ok [INFO] [stdout] test board::tests::should_move_left ... ok [INFO] [stdout] test board::tests::should_move_right ... ok [INFO] [stdout] test board::tests::should_move_with_high_values ... ok [INFO] [stdout] test board::tests::should_move_down ... ok [INFO] [stdout] test solver::tests::test_next_best_move ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 30 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.07s [INFO] [stdout] [INFO] [stderr] Doc-tests play_2048 [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" "ca432809680a17f486060fc23bf3762c83af5ea22d58d21c57c583d7e3af7b57", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ca432809680a17f486060fc23bf3762c83af5ea22d58d21c57c583d7e3af7b57", kill_on_drop: false }` [INFO] [stdout] ca432809680a17f486060fc23bf3762c83af5ea22d58d21c57c583d7e3af7b57