[INFO] cloning repository https://github.com/roebuk/rust-book-exercises
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/roebuk/rust-book-exercises" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Froebuk%2Frust-book-exercises", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Froebuk%2Frust-book-exercises'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ed1ca0fec4682bf21af0cd74ff5b4d6b31a544b8
[INFO] checking roebuk/rust-book-exercises against try#32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d for pr-83312
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Froebuk%2Frust-book-exercises" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/roebuk/rust-book-exercises on toolchain 32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/roebuk/rust-book-exercises
[INFO] finished tweaking git repo https://github.com/roebuk/rust-book-exercises
[INFO] tweaked toml for git repo https://github.com/roebuk/rust-book-exercises written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/roebuk/rust-book-exercises already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d" "metadata" "--no-deps" "--format-version=1", 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] a48334775fc7ac6a33c235b19a6fb1307285b2eea63080d693d1d5c73d0bd2c2
[INFO] running `Command { std: "docker" "start" "-a" "a48334775fc7ac6a33c235b19a6fb1307285b2eea63080d693d1d5c73d0bd2c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a48334775fc7ac6a33c235b19a6fb1307285b2eea63080d693d1d5c73d0bd2c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a48334775fc7ac6a33c235b19a6fb1307285b2eea63080d693d1d5c73d0bd2c2", kill_on_drop: false }`
[INFO] [stdout] a48334775fc7ac6a33c235b19a6fb1307285b2eea63080d693d1d5c73d0bd2c2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ddb1db4fa7549063c0c086e2213b82c2f73fbbfb1312e80cae27d1ce486dfa6c
[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" "ddb1db4fa7549063c0c086e2213b82c2f73fbbfb1312e80cae27d1ce486dfa6c", kill_on_drop: false }`
[INFO] [stderr]     Checking rustbook v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `Command { std: "docker" "inspect" "ddb1db4fa7549063c0c086e2213b82c2f73fbbfb1312e80cae27d1ce486dfa6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ddb1db4fa7549063c0c086e2213b82c2f73fbbfb1312e80cae27d1ce486dfa6c", kill_on_drop: false }`
[INFO] [stdout] ddb1db4fa7549063c0c086e2213b82c2f73fbbfb1312e80cae27d1ce486dfa6c