[INFO] fetching crate sudoku-solver 0.4.0...
[INFO] testing sudoku-solver-0.4.0 against 1.59.0 for beta-1.60-1
[INFO] extracting crate sudoku-solver 0.4.0 into /workspace/builds/worker-44/source
[INFO] validating manifest of crates.io crate sudoku-solver 0.4.0 on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sudoku-solver 0.4.0
[INFO] finished tweaking crates.io crate sudoku-solver 0.4.0
[INFO] tweaked toml for crates.io crate sudoku-solver 0.4.0 written to /workspace/builds/worker-44/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4c45aab5c5f9cd5c79b0bffca5f8af1d3b6d67f1bc2fa5cf89ea3e0ea434bfcb
[INFO] running `Command { std: "docker" "start" "-a" "4c45aab5c5f9cd5c79b0bffca5f8af1d3b6d67f1bc2fa5cf89ea3e0ea434bfcb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4c45aab5c5f9cd5c79b0bffca5f8af1d3b6d67f1bc2fa5cf89ea3e0ea434bfcb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c45aab5c5f9cd5c79b0bffca5f8af1d3b6d67f1bc2fa5cf89ea3e0ea434bfcb", kill_on_drop: false }`
[INFO] [stdout] 4c45aab5c5f9cd5c79b0bffca5f8af1d3b6d67f1bc2fa5cf89ea3e0ea434bfcb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8b945361d0302ffa26a24b7c79a9f2ba37ccb9a7e01ef5d4b4984aff0a5dd4f8
[INFO] running `Command { std: "docker" "start" "-a" "8b945361d0302ffa26a24b7c79a9f2ba37ccb9a7e01ef5d4b4984aff0a5dd4f8", kill_on_drop: false }`
[INFO] [stderr]    Compiling bit-iter v1.1.0
[INFO] [stderr]    Compiling sudoku-solver v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.28s
[INFO] running `Command { std: "docker" "inspect" "8b945361d0302ffa26a24b7c79a9f2ba37ccb9a7e01ef5d4b4984aff0a5dd4f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b945361d0302ffa26a24b7c79a9f2ba37ccb9a7e01ef5d4b4984aff0a5dd4f8", kill_on_drop: false }`
[INFO] [stdout] 8b945361d0302ffa26a24b7c79a9f2ba37ccb9a7e01ef5d4b4984aff0a5dd4f8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 225f419e9bde94b4348919e9b59894207cbabc0fdc8798074d9f1a2ad2d7e316
[INFO] running `Command { std: "docker" "start" "-a" "225f419e9bde94b4348919e9b59894207cbabc0fdc8798074d9f1a2ad2d7e316", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling crossbeam-utils v0.8.7
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling semver v1.0.6
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.7
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling plotters-backend v0.3.2
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling half v1.8.2
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling itoa v0.4.8
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling oorandom v11.1.3
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling itertools v0.10.3
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling walkdir v2.3.2
[INFO] [stderr]    Compiling plotters-svg v0.3.1
[INFO] [stderr]    Compiling crossbeam-channel v0.5.2
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling crossbeam-deque v0.8.1
[INFO] [stderr]    Compiling cast v0.2.7
[INFO] [stderr]    Compiling plotters v0.3.1
[INFO] [stderr]    Compiling criterion-plot v0.4.4
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]    Compiling bstr v0.2.17
[INFO] [stderr]    Compiling serde_cbor v0.11.2
[INFO] [stderr]    Compiling csv v1.1.6
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling criterion v0.3.5
[INFO] [stderr]    Compiling sudoku-solver v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 34.51s
[INFO] running `Command { std: "docker" "inspect" "225f419e9bde94b4348919e9b59894207cbabc0fdc8798074d9f1a2ad2d7e316", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "225f419e9bde94b4348919e9b59894207cbabc0fdc8798074d9f1a2ad2d7e316", kill_on_drop: false }`
[INFO] [stdout] 225f419e9bde94b4348919e9b59894207cbabc0fdc8798074d9f1a2ad2d7e316
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e72756d2b4ce05c08adaa175cf54fa67174b65b84ecbe396d89992206e21bab2
[INFO] running `Command { std: "docker" "start" "-a" "e72756d2b4ce05c08adaa175cf54fa67174b65b84ecbe396d89992206e21bab2", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.18s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/sudoku_solver-6ee84c48720153c1)
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test board::tests::string_rep_of_board_is_correct ... ok
[INFO] [stdout] test solver::tests::duplicate_in_column_is_detected ... ok
[INFO] [stdout] test solver::tests::duplicate_in_row_is_detected ... ok
[INFO] [stdout] test solver::tests::duplicate_in_square_is_detected ... ok
[INFO] [stdout] test solver::tests::detects_unsolvable_puzzles ... ok
[INFO] [stdout] test solver::tests::finds_multiple_solutions ... ok
[INFO] [stdout] test solver::tests::invalid_cell_values_are_detected ... ok
[INFO] [stdout] test solver::tests::valid_board_is_passed ... ok
[INFO] [stderr]    Doc-tests sudoku-solver
[INFO] [stdout] test solver::tests::solves_solvable_puzzles ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.59s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test src/board/mod.rs - board::Board::get_cell (line 32) ... ok
[INFO] [stdout] test src/lib.rs - (line 36) ... ok
[INFO] [stdout] test src/board/mod.rs - board::Board::from (line 100) ... ok
[INFO] [stdout] test src/solver/mod.rs - solver::valid (line 24) ... ok
[INFO] [stdout] test src/solver/mod.rs - solver::solve (line 163) ... ok
[INFO] [stdout] test src/board/mod.rs - board::Board::set_cell (line 58) ... ok
[INFO] [stdout] test src/solver/mod.rs - solver::SolutionIter::new (line 247) ... ok
[INFO] [stdout] test src/board/mod.rs - board::Board::with_cell (line 77) ... ok
[INFO] [stdout] test src/solver/mod.rs - solver::SolutionIter (line 193) ... ok
[INFO] [stdout] test src/lib.rs - (line 10) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.60s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e72756d2b4ce05c08adaa175cf54fa67174b65b84ecbe396d89992206e21bab2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e72756d2b4ce05c08adaa175cf54fa67174b65b84ecbe396d89992206e21bab2", kill_on_drop: false }`
[INFO] [stdout] e72756d2b4ce05c08adaa175cf54fa67174b65b84ecbe396d89992206e21bab2