[INFO] cloning repository https://github.com/binocvlar/Rustlang-Towers-of-Hanoi
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/binocvlar/Rustlang-Towers-of-Hanoi" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbinocvlar%2FRustlang-Towers-of-Hanoi", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbinocvlar%2FRustlang-Towers-of-Hanoi'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 38c5875230b50b8ed24a7c80217a7481594f9e29
[INFO] checking binocvlar/Rustlang-Towers-of-Hanoi against try#6f12b8fe67b4eed2e838dab803ed9493b9d62c0f for pr-79073
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbinocvlar%2FRustlang-Towers-of-Hanoi" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/binocvlar/Rustlang-Towers-of-Hanoi on toolchain 6f12b8fe67b4eed2e838dab803ed9493b9d62c0f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/binocvlar/Rustlang-Towers-of-Hanoi
[INFO] finished tweaking git repo https://github.com/binocvlar/Rustlang-Towers-of-Hanoi
[INFO] tweaked toml for git repo https://github.com/binocvlar/Rustlang-Towers-of-Hanoi written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/binocvlar/Rustlang-Towers-of-Hanoi already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded argparse v0.2.2
[INFO] [stderr]   Downloaded ctrlc v3.1.3
[INFO] [stderr]   Downloaded cc v1.0.37
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1421a8e340e0275fc9d99aae442ea8ff76da157bd36679536d2fd63d83171cc5
[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" "1421a8e340e0275fc9d99aae442ea8ff76da157bd36679536d2fd63d83171cc5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1421a8e340e0275fc9d99aae442ea8ff76da157bd36679536d2fd63d83171cc5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1421a8e340e0275fc9d99aae442ea8ff76da157bd36679536d2fd63d83171cc5", kill_on_drop: false }`
[INFO] [stdout] 1421a8e340e0275fc9d99aae442ea8ff76da157bd36679536d2fd63d83171cc5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ba7ff3c37728e44440c4f40ace5c28af97790ebaeb01186cb3539e6fcc716f1a
[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" "ba7ff3c37728e44440c4f40ace5c28af97790ebaeb01186cb3539e6fcc716f1a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.58
[INFO] [stderr]     Checking argparse v0.2.2
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]     Checking nix v0.14.1
[INFO] [stderr]     Checking termion v1.5.2
[INFO] [stderr]     Checking ctrlc v3.1.3
[INFO] [stderr]     Checking towers_of_hanoi v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.77s
[INFO] running `Command { std: "docker" "inspect" "ba7ff3c37728e44440c4f40ace5c28af97790ebaeb01186cb3539e6fcc716f1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba7ff3c37728e44440c4f40ace5c28af97790ebaeb01186cb3539e6fcc716f1a", kill_on_drop: false }`
[INFO] [stdout] ba7ff3c37728e44440c4f40ace5c28af97790ebaeb01186cb3539e6fcc716f1a