[INFO] fetching crate sudoku-solver 0.4.0...
[INFO] testing sudoku-solver-0.4.0 against 1.60.0 for beta-1.61-1
[INFO] extracting crate sudoku-solver 0.4.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate sudoku-solver 0.4.0 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 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-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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]  Downloading crates ...
[INFO] [stderr]   Downloaded bit-iter v1.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bf86a494b77a348645b7b1e6ddc018753fd2fa4b6b97210fc04be5645424c06b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "bf86a494b77a348645b7b1e6ddc018753fd2fa4b6b97210fc04be5645424c06b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bf86a494b77a348645b7b1e6ddc018753fd2fa4b6b97210fc04be5645424c06b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf86a494b77a348645b7b1e6ddc018753fd2fa4b6b97210fc04be5645424c06b", kill_on_drop: false }`
[INFO] [stdout] bf86a494b77a348645b7b1e6ddc018753fd2fa4b6b97210fc04be5645424c06b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b3d87abfa08bfe19fd917891edc4e1b6c162b218259bdd70311a488feb395c28
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b3d87abfa08bfe19fd917891edc4e1b6c162b218259bdd70311a488feb395c28", 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 2.11s
[INFO] running `Command { std: "docker" "inspect" "b3d87abfa08bfe19fd917891edc4e1b6c162b218259bdd70311a488feb395c28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3d87abfa08bfe19fd917891edc4e1b6c162b218259bdd70311a488feb395c28", kill_on_drop: false }`
[INFO] [stdout] b3d87abfa08bfe19fd917891edc4e1b6c162b218259bdd70311a488feb395c28
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 494e7f9e15b36e6f36edb076160440647de77a36886d901a9d82c418e6da2ba8
[INFO] running `Command { std: "docker" "start" "-a" "494e7f9e15b36e6f36edb076160440647de77a36886d901a9d82c418e6da2ba8", kill_on_drop: false }`
[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 15.09s
[INFO] running `Command { std: "docker" "inspect" "494e7f9e15b36e6f36edb076160440647de77a36886d901a9d82c418e6da2ba8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "494e7f9e15b36e6f36edb076160440647de77a36886d901a9d82c418e6da2ba8", kill_on_drop: false }`
[INFO] [stdout] 494e7f9e15b36e6f36edb076160440647de77a36886d901a9d82c418e6da2ba8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] db1ac6b1b50b286428d69edda00f29044c21fb1842589f867396c8caac59f8af
[INFO] running `Command { std: "docker" "start" "-a" "db1ac6b1b50b286428d69edda00f29044c21fb1842589f867396c8caac59f8af", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stdout] running 9 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/sudoku_solver-d8ce126a04d83127)
[INFO] [stdout] test board::tests::string_rep_of_board_is_correct ... ok
[INFO] [stdout] test solver::tests::duplicate_in_row_is_detected ... ok
[INFO] [stdout] test solver::tests::duplicate_in_column_is_detected ... ok
[INFO] [stdout] test solver::tests::duplicate_in_square_is_detected ... ok
[INFO] [stdout] test solver::tests::valid_board_is_passed ... ok
[INFO] [stdout] test solver::tests::finds_multiple_solutions ... ok
[INFO] [stdout] test solver::tests::detects_unsolvable_puzzles ... ok
[INFO] [stdout] test solver::tests::invalid_cell_values_are_detected ... ok
[INFO] [stdout] test solver::tests::solves_solvable_puzzles ... ok
[INFO] [stderr]    Doc-tests sudoku-solver
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.67s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test src/solver/mod.rs - solver::SolutionIter (line 193) ... ok
[INFO] [stdout] test src/board/mod.rs - board::Board::from (line 100) ... ok
[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::set_cell (line 58) ... ok
[INFO] [stdout] test src/solver/mod.rs - solver::SolutionIter::new (line 247) ... ok
[INFO] [stdout] test src/solver/mod.rs - solver::solve (line 163) ... ok
[INFO] [stdout] test src/board/mod.rs - board::Board::with_cell (line 77) ... ok
[INFO] [stdout] test src/solver/mod.rs - solver::valid (line 24) ... 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 2.93s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "db1ac6b1b50b286428d69edda00f29044c21fb1842589f867396c8caac59f8af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db1ac6b1b50b286428d69edda00f29044c21fb1842589f867396c8caac59f8af", kill_on_drop: false }`
[INFO] [stdout] db1ac6b1b50b286428d69edda00f29044c21fb1842589f867396c8caac59f8af