[INFO] fetching crate purple 0.0.1-placeholder...
[INFO] checking purple-0.0.1-placeholder against master#c919f490bbcd2b29b74016101f7ec71aaa24bdbb for pr-79073
[INFO] extracting crate purple 0.0.1-placeholder into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate purple 0.0.1-placeholder on toolchain c919f490bbcd2b29b74016101f7ec71aaa24bdbb
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate purple 0.0.1-placeholder
[INFO] finished tweaking crates.io crate purple 0.0.1-placeholder
[INFO] tweaked toml for crates.io crate purple 0.0.1-placeholder written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate purple 0.0.1-placeholder already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5d88bd8e072f1adb0c91d429816791440d73a3c3131a98f11573a142fa8def73
[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" "5d88bd8e072f1adb0c91d429816791440d73a3c3131a98f11573a142fa8def73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5d88bd8e072f1adb0c91d429816791440d73a3c3131a98f11573a142fa8def73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d88bd8e072f1adb0c91d429816791440d73a3c3131a98f11573a142fa8def73", kill_on_drop: false }`
[INFO] [stdout] 5d88bd8e072f1adb0c91d429816791440d73a3c3131a98f11573a142fa8def73
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 76c0628c4e6bce01880efebdf405aa42a806e2eab0d77bf35032ae3de2d836df
[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" "76c0628c4e6bce01880efebdf405aa42a806e2eab0d77bf35032ae3de2d836df", kill_on_drop: false }`
[INFO] [stderr]     Checking purple v0.0.1-placeholder (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.22s
[INFO] running `Command { std: "docker" "inspect" "76c0628c4e6bce01880efebdf405aa42a806e2eab0d77bf35032ae3de2d836df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76c0628c4e6bce01880efebdf405aa42a806e2eab0d77bf35032ae3de2d836df", kill_on_drop: false }`
[INFO] [stdout] 76c0628c4e6bce01880efebdf405aa42a806e2eab0d77bf35032ae3de2d836df