[INFO] fetching crate sudoku-solver 0.6.1...
[INFO] testing sudoku-solver-0.6.1 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-8
[INFO] extracting crate sudoku-solver 0.6.1 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate sudoku-solver 0.6.1
[INFO] finished tweaking crates.io crate sudoku-solver 0.6.1
[INFO] tweaked toml for crates.io crate sudoku-solver 0.6.1 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate sudoku-solver 0.6.1 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 63 packages to latest compatible versions
[INFO] [stderr]       Adding criterion v0.5.1 (available: v0.7.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d745472ef24b66c5baa8379a61396483a6fcbb88d49de147fc3c7caca7448906
[INFO] running `Command { std: "docker" "start" "-a" "d745472ef24b66c5baa8379a61396483a6fcbb88d49de147fc3c7caca7448906", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d745472ef24b66c5baa8379a61396483a6fcbb88d49de147fc3c7caca7448906", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d745472ef24b66c5baa8379a61396483a6fcbb88d49de147fc3c7caca7448906", kill_on_drop: false }`
[INFO] [stdout] d745472ef24b66c5baa8379a61396483a6fcbb88d49de147fc3c7caca7448906
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1cf77b6d273dfa2cfec87b508dee39f54c3fe31fc5c9794e5e663f160afb5410
[INFO] running `Command { std: "docker" "start" "-a" "1cf77b6d273dfa2cfec87b508dee39f54c3fe31fc5c9794e5e663f160afb5410", kill_on_drop: false }`
[INFO] [stderr]    Compiling bit-iter v1.3.1
[INFO] [stderr]    Compiling sudoku-solver v0.6.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `Command { std: "docker" "inspect" "1cf77b6d273dfa2cfec87b508dee39f54c3fe31fc5c9794e5e663f160afb5410", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1cf77b6d273dfa2cfec87b508dee39f54c3fe31fc5c9794e5e663f160afb5410", kill_on_drop: false }`
[INFO] [stdout] 1cf77b6d273dfa2cfec87b508dee39f54c3fe31fc5c9794e5e663f160afb5410
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 591db1e24f11d012cab94e83fef90b6070d9a863b46f0c3ebc3701c4a7cec92d
[INFO] running `Command { std: "docker" "start" "-a" "591db1e24f11d012cab94e83fef90b6070d9a863b46f0c3ebc3701c4a7cec92d", kill_on_drop: false }`
[INFO] [stderr]    Compiling sudoku-solver v0.6.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `Command { std: "docker" "inspect" "591db1e24f11d012cab94e83fef90b6070d9a863b46f0c3ebc3701c4a7cec92d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "591db1e24f11d012cab94e83fef90b6070d9a863b46f0c3ebc3701c4a7cec92d", kill_on_drop: false }`
[INFO] [stdout] 591db1e24f11d012cab94e83fef90b6070d9a863b46f0c3ebc3701c4a7cec92d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ff50e35e30c8158d51083b620cab8057fd2968954562d9ab3a8e642ba6014d1e
[INFO] running `Command { std: "docker" "start" "-a" "ff50e35e30c8158d51083b620cab8057fd2968954562d9ab3a8e642ba6014d1e", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.12s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/sudoku_solver-10c1648de2e24a76)
[INFO] [stdout] 
[INFO] [stdout] running 16 tests
[INFO] [stdout] test board::tests::default_board_is_empty ... ok
[INFO] [stdout] test board::tests::get_cell_as_mask_works ... ok
[INFO] [stdout] test board::tests::get_cell_works ... 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::finds_multiple_solutions ... 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::solves_completed_puzzles ... ok
[INFO] [stdout] test board::tests::set_cell_as_mask_works ... ok
[INFO] [stdout] test board::tests::string_rep_of_board_is_correct ... ok
[INFO] [stdout] test solver::tests::valid_board_is_passed ... ok
[INFO] [stdout] test board::tests::set_cell_works ... ok
[INFO] [stdout] test solver::tests::solution_iter_from_impl_works ... ok
[INFO] [stdout] test solver::tests::duplicate_in_square_is_detected ... ok
[INFO] [stdout] test solver::tests::solves_solvable_puzzles ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 16 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.07s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests sudoku_solver
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test src/board/mod.rs - board::Board::from (line 93) ... ok
[INFO] [stdout] test src/lib.rs - (line 36) ... ok
[INFO] [stdout] test src/solver/mod.rs - solver::SolutionIter::new (line 244) ... ok
[INFO] [stdout] test src/board/mod.rs - board::Board::set_cell (line 71) ... ok
[INFO] [stdout] test src/board/mod.rs - board::Board::get_cell (line 32) ... ok
[INFO] [stdout] test src/solver/mod.rs - solver::SolutionIter (line 190) ... ok
[INFO] [stdout] test src/solver/mod.rs - solver::valid (line 24) ... ok
[INFO] [stdout] test src/solver/mod.rs - solver::solve (line 160) ... ok
[INFO] [stdout] test src/lib.rs - (line 10) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.72s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ff50e35e30c8158d51083b620cab8057fd2968954562d9ab3a8e642ba6014d1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff50e35e30c8158d51083b620cab8057fd2968954562d9ab3a8e642ba6014d1e", kill_on_drop: false }`
[INFO] [stdout] ff50e35e30c8158d51083b620cab8057fd2968954562d9ab3a8e642ba6014d1e