[INFO] cloning repository https://github.com/taaamooo/knight-tour-problem
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/taaamooo/knight-tour-problem" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftaaamooo%2Fknight-tour-problem", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftaaamooo%2Fknight-tour-problem'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0a304b3b6736924c3a1c06c5b63f5acb8c8fa9ae
[INFO] checking taaamooo/knight-tour-problem against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftaaamooo%2Fknight-tour-problem" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/taaamooo/knight-tour-problem
[INFO] finished tweaking git repo https://github.com/taaamooo/knight-tour-problem
[INFO] tweaked toml for git repo https://github.com/taaamooo/knight-tour-problem written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/taaamooo/knight-tour-problem on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/taaamooo/knight-tour-problem already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 05c8ea5ee54a4256e6f8610f391d546c5b2a19030ceb8ad9220a6982beafe70b
[INFO] running `Command { std: "docker" "start" "-a" "05c8ea5ee54a4256e6f8610f391d546c5b2a19030ceb8ad9220a6982beafe70b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "05c8ea5ee54a4256e6f8610f391d546c5b2a19030ceb8ad9220a6982beafe70b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05c8ea5ee54a4256e6f8610f391d546c5b2a19030ceb8ad9220a6982beafe70b", kill_on_drop: false }`
[INFO] [stdout] 05c8ea5ee54a4256e6f8610f391d546c5b2a19030ceb8ad9220a6982beafe70b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 82d5aeea832021969bf4c56e86093a1428a87193805bef3c853c6c62f09b7083
[INFO] running `Command { std: "docker" "start" "-a" "82d5aeea832021969bf4c56e86093a1428a87193805bef3c853c6c62f09b7083", kill_on_drop: false }`
[INFO] [stderr]     Checking knight-tour-problem v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.21s
[INFO] running `Command { std: "docker" "inspect" "82d5aeea832021969bf4c56e86093a1428a87193805bef3c853c6c62f09b7083", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82d5aeea832021969bf4c56e86093a1428a87193805bef3c853c6c62f09b7083", kill_on_drop: false }`
[INFO] [stdout] 82d5aeea832021969bf4c56e86093a1428a87193805bef3c853c6c62f09b7083