[INFO] cloning repository https://github.com/simon-frankau/hashiwokakero-solver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/simon-frankau/hashiwokakero-solver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsimon-frankau%2Fhashiwokakero-solver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsimon-frankau%2Fhashiwokakero-solver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dc45812880916dc7c4ca129eb7781c6851900d8e
[INFO] testing simon-frankau/hashiwokakero-solver against beta-2022-02-22 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsimon-frankau%2Fhashiwokakero-solver" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/simon-frankau/hashiwokakero-solver on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-0/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/simon-frankau/hashiwokakero-solver
[INFO] finished tweaking git repo https://github.com/simon-frankau/hashiwokakero-solver
[INFO] tweaked toml for git repo https://github.com/simon-frankau/hashiwokakero-solver written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/simon-frankau/hashiwokakero-solver already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "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-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6def4d011cadad0501df3f98d8d51db03e76d9c16e664e28d51f90fb81308e21
[INFO] running `Command { std: "docker" "start" "-a" "6def4d011cadad0501df3f98d8d51db03e76d9c16e664e28d51f90fb81308e21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6def4d011cadad0501df3f98d8d51db03e76d9c16e664e28d51f90fb81308e21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6def4d011cadad0501df3f98d8d51db03e76d9c16e664e28d51f90fb81308e21", kill_on_drop: false }`
[INFO] [stdout] 6def4d011cadad0501df3f98d8d51db03e76d9c16e664e28d51f90fb81308e21
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4a199d668367746628adbd2395349b8ed9fb285ffbf39b814c9fd5a40804f033
[INFO] running `Command { std: "docker" "start" "-a" "4a199d668367746628adbd2395349b8ed9fb285ffbf39b814c9fd5a40804f033", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling libc v0.2.106
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]    Compiling anyhow v1.0.44
[INFO] [stderr]    Compiling unicode-width v0.1.9
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling termcolor v1.1.2
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling textwrap v0.14.2
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling os_str_bytes v4.2.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap_derive v3.0.0-beta.5
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling clap v3.0.0-beta.5
[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]    Compiling hashiwokakero-solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.36s
[INFO] running `Command { std: "docker" "inspect" "4a199d668367746628adbd2395349b8ed9fb285ffbf39b814c9fd5a40804f033", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a199d668367746628adbd2395349b8ed9fb285ffbf39b814c9fd5a40804f033", kill_on_drop: false }`
[INFO] [stdout] 4a199d668367746628adbd2395349b8ed9fb285ffbf39b814c9fd5a40804f033
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1423ae0202324237804719a081d8664fdc5499f82215aa0918d94a7cb5cc38ac
[INFO] running `Command { std: "docker" "start" "-a" "1423ae0202324237804719a081d8664fdc5499f82215aa0918d94a7cb5cc38ac", kill_on_drop: false }`
[INFO] [stderr]    Compiling predicates-core v1.0.2
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling normalize-line-endings v0.3.0
[INFO] [stderr]    Compiling difflib v0.4.0
[INFO] [stderr]    Compiling termtree v0.2.3
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling wait-timeout v0.2.0
[INFO] [stderr]    Compiling itertools v0.10.3
[INFO] [stderr]    Compiling predicates-tree v1.0.4
[INFO] [stderr]    Compiling bstr v0.2.17
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling float-cmp v0.9.0
[INFO] [stderr]    Compiling predicates v2.1.0
[INFO] [stderr]    Compiling assert_cmd v2.0.2
[INFO] [stderr]    Compiling hashiwokakero-solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 7.82s
[INFO] running `Command { std: "docker" "inspect" "1423ae0202324237804719a081d8664fdc5499f82215aa0918d94a7cb5cc38ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1423ae0202324237804719a081d8664fdc5499f82215aa0918d94a7cb5cc38ac", kill_on_drop: false }`
[INFO] [stdout] 1423ae0202324237804719a081d8664fdc5499f82215aa0918d94a7cb5cc38ac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f5dca2931ca81b1b37c904e1e6cf0c9ec02870276dad84049b9c2aaf3446acda
[INFO] running `Command { std: "docker" "start" "-a" "f5dca2931ca81b1b37c904e1e6cf0c9ec02870276dad84049b9c2aaf3446acda", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/hashiwokakero_solver-a23e78f029bd90b1)
[INFO] [stdout] running 31 tests
[INFO] [stdout] test tests::test_apply_valence_constraints_failure ... ok
[INFO] [stdout] test tests::test_apply_valence_constraints_full ... ok
[INFO] [stdout] test tests::test_apply_valence_constraints_partial ... ok
[INFO] [stdout] test tests::test_find_neighbour ... ok
[INFO] [stdout] test tests::test_completely_empty_fails ... ok
[INFO] [stdout] test tests::test_parse_print_round_trip ... ok
[INFO] [stdout] test tests::test_generate_distributions ... ok
[INFO] [stdout] test tests::test_overpaint ... ok
[INFO] [stdout] test tests::test_propagate_constraints ... ok
[INFO] [stdout] test tests::test_only_commments_fails ... ok
[INFO] [stdout] test tests::test_same_paint_noop ... ok
[INFO] [stdout] test tests::test_propagate_constraints_failure ... ok
[INFO] [stdout] test tests::test_paint_horizontal ... ok
[INFO] [stdout] test tests::test_solve_simple ... ok
[INFO] [stdout] test tests::test_single_cell_print ... ok
[INFO] [stdout] test tests::test_small_print ... ok
[INFO] [stdout] test tests::test_paint_vertical ... ok
[INFO] [stdout] test tests::test_small_parse ... ok
[INFO] [stdout] test tests::test_solve_simple_no_solution ... ok
[INFO] [stdout] test tests::test_unequal_lines_fails ... ok
[INFO] [stdout] test tests::test_solve_single_component_no_solutions ... ok
[INFO] [stdout] test tests::test_solve_split_no_solution ... ok
[INFO] [stdout] test tests::test_single_cell_parse ... ok
[INFO] [stdout] test tests::test_solve_simple_stuck ... ok
[INFO] [stdout] test tests::test_zero_paint_noop ... ok
[INFO] [stdout] test tests::test_paint_removal_fails - should panic ... ok
[INFO] [stdout] test tests::test_solve_single_component ... ok
[INFO] [stdout] test tests::test_solve_split ... ok
[INFO] [stdout] test tests::test_unexpected_chars_fails ... ok
[INFO] [stdout] test tests::test_paint_crossing_fails - should panic ... ok
[INFO] [stdout] test tests::test_paint_off_edge_fails - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 31 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.13s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/solver.rs (/opt/rustwide/target/debug/deps/solver-0df2bf0aacbde475)
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test test_cli_output_flag ... ok
[INFO] [stdout] test test_cli_max_bridges_1_no_solutions ... ok
[INFO] [stdout] test test_cli_success ... ok
[INFO] [stdout] test test_cli_parse_error ... ok
[INFO] [stdout] test test_cli_max_bridges_1_success ... ok
[INFO] [stdout] test test_cli_no_solutions ... ok
[INFO] [stdout] test test_cli_input_flag ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.08s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f5dca2931ca81b1b37c904e1e6cf0c9ec02870276dad84049b9c2aaf3446acda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5dca2931ca81b1b37c904e1e6cf0c9ec02870276dad84049b9c2aaf3446acda", kill_on_drop: false }`
[INFO] [stdout] f5dca2931ca81b1b37c904e1e6cf0c9ec02870276dad84049b9c2aaf3446acda