[INFO] cloning repository https://github.com/krixon/knights-tour-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/krixon/knights-tour-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkrixon%2Fknights-tour-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkrixon%2Fknights-tour-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9cc5756bff781871a102a765ec74a3ea0f5bc3b6
[INFO] testing krixon/knights-tour-rs 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%2Fkrixon%2Fknights-tour-rs" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/krixon/knights-tour-rs 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] started tweaking git repo https://github.com/krixon/knights-tour-rs
[INFO] finished tweaking git repo https://github.com/krixon/knights-tour-rs
[INFO] tweaked toml for git repo https://github.com/krixon/knights-tour-rs written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/krixon/knights-tour-rs 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] de5238ce5d485e17494782f550d76db1848440a540022cadcaa17c2259650e85
[INFO] running `Command { std: "docker" "start" "-a" "de5238ce5d485e17494782f550d76db1848440a540022cadcaa17c2259650e85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "de5238ce5d485e17494782f550d76db1848440a540022cadcaa17c2259650e85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de5238ce5d485e17494782f550d76db1848440a540022cadcaa17c2259650e85", kill_on_drop: false }`
[INFO] [stdout] de5238ce5d485e17494782f550d76db1848440a540022cadcaa17c2259650e85
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 62e57abf142939a0500aff2c9897e0c78b990bcd4631b5d57f4a1cefd96c8e76
[INFO] running `Command { std: "docker" "start" "-a" "62e57abf142939a0500aff2c9897e0c78b990bcd4631b5d57f4a1cefd96c8e76", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.16
[INFO] [stderr]    Compiling rand v0.3.14
[INFO] [stderr]    Compiling knights_tour v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.26s
[INFO] running `Command { std: "docker" "inspect" "62e57abf142939a0500aff2c9897e0c78b990bcd4631b5d57f4a1cefd96c8e76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62e57abf142939a0500aff2c9897e0c78b990bcd4631b5d57f4a1cefd96c8e76", kill_on_drop: false }`
[INFO] [stdout] 62e57abf142939a0500aff2c9897e0c78b990bcd4631b5d57f4a1cefd96c8e76
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 8f71262246fb8c262461d4fc8b4a7b26cf71caa11eaed1e453107a2db34626de
[INFO] running `Command { std: "docker" "start" "-a" "8f71262246fb8c262461d4fc8b4a7b26cf71caa11eaed1e453107a2db34626de", kill_on_drop: false }`
[INFO] [stderr]    Compiling knights_tour v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "8f71262246fb8c262461d4fc8b4a7b26cf71caa11eaed1e453107a2db34626de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f71262246fb8c262461d4fc8b4a7b26cf71caa11eaed1e453107a2db34626de", kill_on_drop: false }`
[INFO] [stdout] 8f71262246fb8c262461d4fc8b4a7b26cf71caa11eaed1e453107a2db34626de
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 44875fbb14a7cd33eed700363fea2747ac85d5aa93ff6a44c69a588eed8dd430
[INFO] running `Command { std: "docker" "start" "-a" "44875fbb14a7cd33eed700363fea2747ac85d5aa93ff6a44c69a588eed8dd430", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/knights_tour-cbe2327e1a80b52e)
[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" "44875fbb14a7cd33eed700363fea2747ac85d5aa93ff6a44c69a588eed8dd430", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44875fbb14a7cd33eed700363fea2747ac85d5aa93ff6a44c69a588eed8dd430", kill_on_drop: false }`
[INFO] [stdout] 44875fbb14a7cd33eed700363fea2747ac85d5aa93ff6a44c69a588eed8dd430