[INFO] fetching crate sudoku_rs 0.2.3...
[INFO] testing sudoku_rs-0.2.3 against 1.55.0 for beta-1.56-1
[INFO] extracting crate sudoku_rs 0.2.3 into /workspace/builds/worker-88/source
[INFO] validating manifest of crates.io crate sudoku_rs 0.2.3 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 crates.io crate sudoku_rs 0.2.3
[INFO] finished tweaking crates.io crate sudoku_rs 0.2.3
[INFO] tweaked toml for crates.io crate sudoku_rs 0.2.3 written to /workspace/builds/worker-88/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-88/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/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] b8715b58c10daf8c089138ebea92b190546e0f228c06b3ea3a18123b0f0be3ab
[INFO] running `Command { std: "docker" "start" "-a" "b8715b58c10daf8c089138ebea92b190546e0f228c06b3ea3a18123b0f0be3ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b8715b58c10daf8c089138ebea92b190546e0f228c06b3ea3a18123b0f0be3ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8715b58c10daf8c089138ebea92b190546e0f228c06b3ea3a18123b0f0be3ab", kill_on_drop: false }`
[INFO] [stdout] b8715b58c10daf8c089138ebea92b190546e0f228c06b3ea3a18123b0f0be3ab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/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] 34cf5b5c03b9a577f261222848871149503fe329ad0edaa25554c8246b3dc140
[INFO] running `Command { std: "docker" "start" "-a" "34cf5b5c03b9a577f261222848871149503fe329ad0edaa25554c8246b3dc140", kill_on_drop: false }`
[INFO] [stderr]    Compiling sudoku_rs v0.2.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.74s
[INFO] running `Command { std: "docker" "inspect" "34cf5b5c03b9a577f261222848871149503fe329ad0edaa25554c8246b3dc140", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "34cf5b5c03b9a577f261222848871149503fe329ad0edaa25554c8246b3dc140", kill_on_drop: false }`
[INFO] [stdout] 34cf5b5c03b9a577f261222848871149503fe329ad0edaa25554c8246b3dc140
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/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] 15eba2cf0426ba5fb1049b33ffd72c20dde4fcd6014bf1dd6d924da3e3bd8ec4
[INFO] running `Command { std: "docker" "start" "-a" "15eba2cf0426ba5fb1049b33ffd72c20dde4fcd6014bf1dd6d924da3e3bd8ec4", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver v1.0.4
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling itoa v0.4.8
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling rand_xoshiro v0.1.0
[INFO] [stderr]    Compiling serde_json v1.0.67
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]    Compiling crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling bstr v0.2.16
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling crossbeam-deque v0.8.1
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling cast v0.2.7
[INFO] [stderr]    Compiling csv v1.1.6
[INFO] [stderr]    Compiling criterion-plot v0.3.1
[INFO] [stderr]    Compiling criterion v0.2.11
[INFO] [stderr]    Compiling sudoku_rs v0.2.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 15.95s
[INFO] running `Command { std: "docker" "inspect" "15eba2cf0426ba5fb1049b33ffd72c20dde4fcd6014bf1dd6d924da3e3bd8ec4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15eba2cf0426ba5fb1049b33ffd72c20dde4fcd6014bf1dd6d924da3e3bd8ec4", kill_on_drop: false }`
[INFO] [stdout] 15eba2cf0426ba5fb1049b33ffd72c20dde4fcd6014bf1dd6d924da3e3bd8ec4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/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] e96d3d766b29015b230c37bb30a25bb622ce29df062ae1fbcffc97df136b1a92
[INFO] running `Command { std: "docker" "start" "-a" "e96d3d766b29015b230c37bb30a25bb622ce29df062ae1fbcffc97df136b1a92", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/sudoku_rs-df0d9873b8137cad)
[INFO] [stdout] 
[INFO] [stdout] running 21 tests
[INFO] [stdout] test bitset::test::and ... ok
[INFO] [stdout] test bitset::test::count ... ok
[INFO] [stdout] test bitset::test::remove ... ok
[INFO] [stdout] test bitset::test::reverse ... ok
[INFO] [stdout] test bitset::test::set ... ok
[INFO] [stdout] test bitset::test::set_get ... ok
[INFO] [stdout] test board::test::avaliable_count ... ok
[INFO] [stdout] test board::test::avaliable_val ... ok
[INFO] [stdout] test board::test::display ... ok
[INFO] [stdout] test board::test::empty ... ok
[INFO] [stdout] test board::test::from_str ... ok
[INFO] [stdout] test board::test::set_edge_0 ... ok
[INFO] [stdout] test board::test::win_check ... ok
[INFO] [stdout] test grade::test::grade_0 ... ok
[INFO] [stdout] test board::test::set_edge_81 ... ok
[INFO] [stdout] test grade::test::grade_9 ... ok
[INFO] [stdout] test solver::test::solve ... ok
[INFO] [stdout] test grade::test::grade_n ... ok
[INFO] [stdout] test solver::test::unique ... ok
[INFO] [stdout] test solver::test::multi_solve ... ok
[INFO] [stdout] test solver::test::unique_idempotence ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 21 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests sudoku_rs
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test src/solver.rs - solver (line 5) ... ok
[INFO] [stdout] test src/board.rs - board (line 3) ... ok
[INFO] [stdout] test src/board.rs - board::Board::from_vec (line 43) ... ok
[INFO] [stdout] test src/board.rs - board::Board::is_empty (line 120) ... ok
[INFO] [stdout] test src/solver.rs - solver (line 15) ... ok
[INFO] [stdout] test src/lib.rs - (line 15) ... ok
[INFO] [stdout] test src/lib.rs - (line 24) ... ok
[INFO] [stdout] test src/grade.rs - grade (line 2) ... ok
[INFO] [stdout] test src/lib.rs - (line 4) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 14.67s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e96d3d766b29015b230c37bb30a25bb622ce29df062ae1fbcffc97df136b1a92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e96d3d766b29015b230c37bb30a25bb622ce29df062ae1fbcffc97df136b1a92", kill_on_drop: false }`
[INFO] [stdout] e96d3d766b29015b230c37bb30a25bb622ce29df062ae1fbcffc97df136b1a92