[INFO] cloning repository https://github.com/cadecuddy/Rust-Book-Activities-Practice
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cadecuddy/Rust-Book-Activities-Practice" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcadecuddy%2FRust-Book-Activities-Practice", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcadecuddy%2FRust-Book-Activities-Practice'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fec63e5e031c31a56d08f4d0986b8edd797c73f7
[INFO] checking cadecuddy/Rust-Book-Activities-Practice against try#ff044a3d65d25a17c3e14c1530004e1540179ba7 for pr-78338
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcadecuddy%2FRust-Book-Activities-Practice" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cadecuddy/Rust-Book-Activities-Practice on toolchain ff044a3d65d25a17c3e14c1530004e1540179ba7
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff044a3d65d25a17c3e14c1530004e1540179ba7" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cadecuddy/Rust-Book-Activities-Practice
[INFO] finished tweaking git repo https://github.com/cadecuddy/Rust-Book-Activities-Practice
[INFO] tweaked toml for git repo https://github.com/cadecuddy/Rust-Book-Activities-Practice written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/cadecuddy/Rust-Book-Activities-Practice already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff044a3d65d25a17c3e14c1530004e1540179ba7" "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-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+ff044a3d65d25a17c3e14c1530004e1540179ba7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fdd331254d169f7694a0e9cc3df61f93c3f9b96fc71c68ad884a5bd8c19d7e67
[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" "fdd331254d169f7694a0e9cc3df61f93c3f9b96fc71c68ad884a5bd8c19d7e67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fdd331254d169f7694a0e9cc3df61f93c3f9b96fc71c68ad884a5bd8c19d7e67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fdd331254d169f7694a0e9cc3df61f93c3f9b96fc71c68ad884a5bd8c19d7e67", kill_on_drop: false }`
[INFO] [stdout] fdd331254d169f7694a0e9cc3df61f93c3f9b96fc71c68ad884a5bd8c19d7e67
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+ff044a3d65d25a17c3e14c1530004e1540179ba7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f4b2dfee079d02d9ac1b22e6d96dfb68b9ce4e22fdbe29e688062748b7e33c75
[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" "f4b2dfee079d02d9ac1b22e6d96dfb68b9ce4e22fdbe29e688062748b7e33c75", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.74
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking guessing_game v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.10s
[INFO] running `Command { std: "docker" "inspect" "f4b2dfee079d02d9ac1b22e6d96dfb68b9ce4e22fdbe29e688062748b7e33c75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4b2dfee079d02d9ac1b22e6d96dfb68b9ce4e22fdbe29e688062748b7e33c75", kill_on_drop: false }`
[INFO] [stdout] f4b2dfee079d02d9ac1b22e6d96dfb68b9ce4e22fdbe29e688062748b7e33c75