[INFO] cloning repository https://github.com/upenn-cis198-2018f/lecture8
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/upenn-cis198-2018f/lecture8" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fupenn-cis198-2018f%2Flecture8", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fupenn-cis198-2018f%2Flecture8'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ccc03f9683e90bfe33b0a8fc34771bfbb72ed746
[INFO] checking upenn-cis198-2018f/lecture8 against try#894d32a5432c6a6461bb2aac7c3d5f2e87dce83f for pr-77015
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fupenn-cis198-2018f%2Flecture8" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/upenn-cis198-2018f/lecture8 on toolchain 894d32a5432c6a6461bb2aac7c3d5f2e87dce83f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/upenn-cis198-2018f/lecture8
[INFO] finished tweaking git repo https://github.com/upenn-cis198-2018f/lecture8
[INFO] tweaked toml for git repo https://github.com/upenn-cis198-2018f/lecture8 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/upenn-cis198-2018f/lecture8 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "fetch" "--locked" "--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-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0f41deead8a4fc1566157027eb727ee9b82225042d481cd86e8dee6430606679
[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" "0f41deead8a4fc1566157027eb727ee9b82225042d481cd86e8dee6430606679", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0f41deead8a4fc1566157027eb727ee9b82225042d481cd86e8dee6430606679", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f41deead8a4fc1566157027eb727ee9b82225042d481cd86e8dee6430606679", kill_on_drop: false }`
[INFO] [stdout] 0f41deead8a4fc1566157027eb727ee9b82225042d481cd86e8dee6430606679
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 715f4a06fdf3cbd59227f31783789b5d008630a2bbb41afa1997605861a709f4
[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" "715f4a06fdf3cbd59227f31783789b5d008630a2bbb41afa1997605861a709f4", kill_on_drop: false }`
[INFO] [stderr]     Checking lecture8 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "715f4a06fdf3cbd59227f31783789b5d008630a2bbb41afa1997605861a709f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "715f4a06fdf3cbd59227f31783789b5d008630a2bbb41afa1997605861a709f4", kill_on_drop: false }`
[INFO] [stdout] 715f4a06fdf3cbd59227f31783789b5d008630a2bbb41afa1997605861a709f4