[INFO] cloning repository https://github.com/grng3r/algorithms_mit_practice
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/grng3r/algorithms_mit_practice" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgrng3r%2Falgorithms_mit_practice", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgrng3r%2Falgorithms_mit_practice'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e8bf8d4b843bcfdf3ae9200b64836883e9eb922b
[INFO] checking grng3r/algorithms_mit_practice against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgrng3r%2Falgorithms_mit_practice" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/grng3r/algorithms_mit_practice on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/grng3r/algorithms_mit_practice
[INFO] finished tweaking git repo https://github.com/grng3r/algorithms_mit_practice
[INFO] tweaked toml for git repo https://github.com/grng3r/algorithms_mit_practice written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/grng3r/algorithms_mit_practice already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e3e2d20cdc2f5d742b5ef0b4aa77367d314638e7c4453ff5c3d28dba2b1aa2f3
[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" "e3e2d20cdc2f5d742b5ef0b4aa77367d314638e7c4453ff5c3d28dba2b1aa2f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e3e2d20cdc2f5d742b5ef0b4aa77367d314638e7c4453ff5c3d28dba2b1aa2f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3e2d20cdc2f5d742b5ef0b4aa77367d314638e7c4453ff5c3d28dba2b1aa2f3", kill_on_drop: false }`
[INFO] [stdout] e3e2d20cdc2f5d742b5ef0b4aa77367d314638e7c4453ff5c3d28dba2b1aa2f3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] 1e5474eba6d33c2e86feba499a1dc8b4e34b4c31c7c92c7cf67bbfdd91a3345c
[INFO] running `Command { std: "docker" "start" "-a" "1e5474eba6d33c2e86feba499a1dc8b4e34b4c31c7c92c7cf67bbfdd91a3345c", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling rayon v1.4.0
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]     Checking crossbeam-channel v0.4.4
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking rayon-core v1.8.1
[INFO] [stderr]     Checking introduction_to_algorithms_3d_edition v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.49s
[INFO] running `Command { std: "docker" "inspect" "1e5474eba6d33c2e86feba499a1dc8b4e34b4c31c7c92c7cf67bbfdd91a3345c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e5474eba6d33c2e86feba499a1dc8b4e34b4c31c7c92c7cf67bbfdd91a3345c", kill_on_drop: false }`
[INFO] [stdout] 1e5474eba6d33c2e86feba499a1dc8b4e34b4c31c7c92c7cf67bbfdd91a3345c