[INFO] fetching crate mazinator 0.1.2...
[INFO] testing mazinator-0.1.2 against 1.55.0 for beta-1.56-1
[INFO] extracting crate mazinator 0.1.2 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate mazinator 0.1.2 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 mazinator 0.1.2
[INFO] finished tweaking crates.io crate mazinator 0.1.2
[INFO] tweaked toml for crates.io crate mazinator 0.1.2 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate mazinator 0.1.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", 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] d4a444a56fad746419b06b93ba3c22e531653acf865a55b40282145e2e1712e4
[INFO] running `Command { std: "docker" "start" "-a" "d4a444a56fad746419b06b93ba3c22e531653acf865a55b40282145e2e1712e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d4a444a56fad746419b06b93ba3c22e531653acf865a55b40282145e2e1712e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4a444a56fad746419b06b93ba3c22e531653acf865a55b40282145e2e1712e4", kill_on_drop: false }`
[INFO] [stdout] d4a444a56fad746419b06b93ba3c22e531653acf865a55b40282145e2e1712e4
[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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 172bdbccb7768d3857a8349e2c4de470d4d494842e42b652918bc0dff6cfb238
[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" "172bdbccb7768d3857a8349e2c4de470d4d494842e42b652918bc0dff6cfb238", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling colored v1.9.2
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling mazinator v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.79s
[INFO] running `Command { std: "docker" "inspect" "172bdbccb7768d3857a8349e2c4de470d4d494842e42b652918bc0dff6cfb238", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "172bdbccb7768d3857a8349e2c4de470d4d494842e42b652918bc0dff6cfb238", kill_on_drop: false }`
[INFO] [stdout] 172bdbccb7768d3857a8349e2c4de470d4d494842e42b652918bc0dff6cfb238
[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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f59389e3dfc6ce8b08b19744560ef42d5531538ca00d7c137e8a8d5f7f25f16e
[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" "f59389e3dfc6ce8b08b19744560ef42d5531538ca00d7c137e8a8d5f7f25f16e", kill_on_drop: false }`
[INFO] [stderr]    Compiling mazinator v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.87s
[INFO] running `Command { std: "docker" "inspect" "f59389e3dfc6ce8b08b19744560ef42d5531538ca00d7c137e8a8d5f7f25f16e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f59389e3dfc6ce8b08b19744560ef42d5531538ca00d7c137e8a8d5f7f25f16e", kill_on_drop: false }`
[INFO] [stdout] f59389e3dfc6ce8b08b19744560ef42d5531538ca00d7c137e8a8d5f7f25f16e
[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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "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] 857696ce82f4dc5d315192d9a53991e13f364cf816b7d165013c99216e6d7831
[INFO] running `Command { std: "docker" "start" "-a" "857696ce82f4dc5d315192d9a53991e13f364cf816b7d165013c99216e6d7831", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mazinator-a438dc590d3744f0)
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test structure::matrix::matrix_tests::get_correct_index ... ok
[INFO] [stdout] test structure::matrix::matrix_tests::put_correct_value ... ok
[INFO] [stdout] test structure::wall::wall_tests::constructed_correct_walls ... ok
[INFO] [stdout] test algo::dfs::dfs_test::visited_all_cells ... ok
[INFO] [stdout] test algo::bfs::bfs_test::visited_all_cells ... ok
[INFO] [stdout] test structure::wall::wall_tests::remove_wall_correctly ... ok
[INFO] [stdout] test structure::matrix::matrix_tests::get_correct_neighbours ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mazinator-2b39905d0bff94e1)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests mazinator
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "857696ce82f4dc5d315192d9a53991e13f364cf816b7d165013c99216e6d7831", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "857696ce82f4dc5d315192d9a53991e13f364cf816b7d165013c99216e6d7831", kill_on_drop: false }`
[INFO] [stdout] 857696ce82f4dc5d315192d9a53991e13f364cf816b7d165013c99216e6d7831