[INFO] fetching crate play-2048 1.0.0...
[INFO] testing play-2048-1.0.0 against 1.91.0 for beta-1.92-2
[INFO] extracting crate play-2048 1.0.0 into /workspace/builds/worker-2-tc1/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-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate play-2048 1.0.0 on toolchain 1.91.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "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" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded redox_termios v0.1.1
[INFO] [stderr]   Downloaded walkdir v2.3.1
[INFO] [stderr]   Downloaded oorandom v11.1.0
[INFO] [stderr]   Downloaded criterion-plot v0.4.2
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[INFO] [stderr]   Downloaded serde_json v1.0.51
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[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.60
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[INFO] [stderr]   Downloaded csv v1.1.3
[INFO] [stderr]   Downloaded plotters v0.2.12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5ecb8cd4e40dfe1c65f9a0a679efc194a77c09bf9d539b44d6503eea2abe3e6d
[INFO] running `Command { std: "docker" "start" "-a" "5ecb8cd4e40dfe1c65f9a0a679efc194a77c09bf9d539b44d6503eea2abe3e6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5ecb8cd4e40dfe1c65f9a0a679efc194a77c09bf9d539b44d6503eea2abe3e6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ecb8cd4e40dfe1c65f9a0a679efc194a77c09bf9d539b44d6503eea2abe3e6d", kill_on_drop: false }`
[INFO] [stdout] 5ecb8cd4e40dfe1c65f9a0a679efc194a77c09bf9d539b44d6503eea2abe3e6d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 73f96927bb9ffab5cff8c0a1e554287465bd7faf1e4a99bc24987b4256e36fc8
[INFO] running `Command { std: "docker" "start" "-a" "73f96927bb9ffab5cff8c0a1e554287465bd7faf1e4a99bc24987b4256e36fc8", 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 ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling unicode-width v0.1.7
[INFO] [stderr]    Compiling numtoa v0.1.0
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling fnv v1.0.6
[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 7.41s
[INFO] running `Command { std: "docker" "inspect" "73f96927bb9ffab5cff8c0a1e554287465bd7faf1e4a99bc24987b4256e36fc8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73f96927bb9ffab5cff8c0a1e554287465bd7faf1e4a99bc24987b4256e36fc8", kill_on_drop: false }`
[INFO] [stdout] 73f96927bb9ffab5cff8c0a1e554287465bd7faf1e4a99bc24987b4256e36fc8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 53b96e6e22c47aeaa5f486228e1dd30d2bc76bfbd4c62a0cb93145c39a09f4cc
[INFO] running `Command { std: "docker" "start" "-a" "53b96e6e22c47aeaa5f486228e1dd30d2bc76bfbd4c62a0cb93145c39a09f4cc", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling ryu v1.0.4
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling rayon-core v1.7.0
[INFO] [stderr]    Compiling itoa v0.4.5
[INFO] [stderr]    Compiling syn v1.0.18
[INFO] [stderr]    Compiling either v1.5.3
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling regex-syntax v0.6.17
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]    Compiling walkdir v2.3.1
[INFO] [stderr]    Compiling oorandom v11.1.0
[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 regex-automata v0.1.9
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]    Compiling csv-core v0.1.10
[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 regex v1.3.7
[INFO] [stderr]    Compiling rayon v1.3.0
[INFO] [stderr]    Compiling bstr v0.2.12
[INFO] [stderr]    Compiling serde_json v1.0.51
[INFO] [stderr]    Compiling serde_derive v1.0.106
[INFO] [stderr]    Compiling csv v1.1.3
[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 16.15s
[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" "53b96e6e22c47aeaa5f486228e1dd30d2bc76bfbd4c62a0cb93145c39a09f4cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "53b96e6e22c47aeaa5f486228e1dd30d2bc76bfbd4c62a0cb93145c39a09f4cc", kill_on_drop: false }`
[INFO] [stdout] 53b96e6e22c47aeaa5f486228e1dd30d2bc76bfbd4c62a0cb93145c39a09f4cc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 942af2cf8944e7fd5b9667417a8fc1abb8ec8756340c4bf03b37a642179e6cb8
[INFO] running `Command { std: "docker" "start" "-a" "942af2cf8944e7fd5b9667417a8fc1abb8ec8756340c4bf03b37a642179e6cb8", 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` (lib test) generated 1 warning
[INFO] [stderr] warning: `play-2048` (bin "play-2048" test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.09s
[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-ea0a689da563c160)
[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_count_empty_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_empty_tiles ... ok
[INFO] [stdout] test board::tests::should_get_max_value ... ok
[INFO] [stdout] test board::tests::should_get_exponent_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 board::tests::should_set_value ... ok
[INFO] [stdout] test board::tests::should_set_value_by_exponent ... ok
[INFO] [stdout] test evaluators::tests::test_combined_evaluator ... ok
[INFO] [stdout] test evaluators::tests::test_empty_tile_evaluator ... ok
[INFO] [stdout] test utils::tests::should_get_right_move ... ok
[INFO] [stdout] test utils::tests::should_invert_row ... 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_monotonicity_evaluator ... ok
[INFO] [stdout] test utils::tests::should_set_value_in_row ... ok
[INFO] [stdout] test utils::tests::should_get_left_move ... ok
[INFO] [stdout] test board::tests::should_move_up ... ok
[INFO] [stdout] test board::tests::should_move_left ... ok
[INFO] [stdout] test evaluators::tests::test_precomputed_inversion_evaluator ... ok
[INFO] [stdout] test board::tests::should_move_with_high_values ... ok
[INFO] [stdout] test board::tests::should_move_right ... 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 0.06s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/play_2048-8e019585a1226fcd)
[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_empty_tiles ... 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_get_value ... ok
[INFO] [stdout] test board::tests::should_iterate_over_exponents ... ok
[INFO] [stdout] test board::tests::should_set_value_by_exponent ... ok
[INFO] [stdout] test evaluators::tests::test_alignment_evaluator ... ok
[INFO] [stdout] test evaluators::tests::test_monotonicity_evaluator ... 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_set_value_in_row ... ok
[INFO] [stdout] test utils::tests::should_invert_row ... 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_empty_tiles ... ok
[INFO] [stdout] test board::tests::should_set_value ... ok
[INFO] [stdout] test evaluators::tests::test_empty_tile_evaluator ... ok
[INFO] [stdout] test board::tests::should_move_up ... ok
[INFO] [stdout] test board::tests::should_move_left ... ok
[INFO] [stdout] test evaluators::tests::test_precomputed_inversion_evaluator ... ok
[INFO] [stdout] test board::tests::should_move_down ... ok
[INFO] [stdout] test board::tests::should_move_right ... ok
[INFO] [stdout] test board::tests::should_move_with_high_values ... ok
[INFO] [stdout] test solver::tests::test_next_best_move ... ok
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests play_2048
[INFO] [stdout] test result: ok. 30 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.10s
[INFO] [stdout] 
[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" "942af2cf8944e7fd5b9667417a8fc1abb8ec8756340c4bf03b37a642179e6cb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "942af2cf8944e7fd5b9667417a8fc1abb8ec8756340c4bf03b37a642179e6cb8", kill_on_drop: false }`
[INFO] [stdout] 942af2cf8944e7fd5b9667417a8fc1abb8ec8756340c4bf03b37a642179e6cb8
