[INFO] fetching crate inkling 0.12.5...
[INFO] checking inkling-0.12.5 against beta for pr-78714
[INFO] extracting crate inkling 0.12.5 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate inkling 0.12.5 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 crates.io crate inkling 0.12.5
[INFO] finished tweaking crates.io crate inkling 0.12.5
[INFO] tweaked toml for crates.io crate inkling 0.12.5 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate inkling 0.12.5 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_derive v1.0.97
[INFO] [stderr]   Downloaded serde v1.0.97
[INFO] [stderr]   Downloaded syn v0.15.40
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+beta" "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] 3d369d32834df360f0d0f2c167191be28ffb684c12d879924d32de1a018ca8f4
[INFO] running `Command { std: "docker" "start" "-a" "3d369d32834df360f0d0f2c167191be28ffb684c12d879924d32de1a018ca8f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3d369d32834df360f0d0f2c167191be28ffb684c12d879924d32de1a018ca8f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d369d32834df360f0d0f2c167191be28ffb684c12d879924d32de1a018ca8f4", kill_on_drop: false }`
[INFO] [stdout] 3d369d32834df360f0d0f2c167191be28ffb684c12d879924d32de1a018ca8f4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+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] 65918d17eeac951297762131651f47be71c98b316c04e0c1c6956c662a3c2d90
[INFO] running `Command { std: "docker" "start" "-a" "65918d17eeac951297762131651f47be71c98b316c04e0c1c6956c662a3c2d90", kill_on_drop: false }`
[INFO] [stderr]    Compiling ryu v1.0.0
[INFO] [stderr]    Compiling serde v1.0.97
[INFO] [stderr]     Checking inkling v0.12.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.56s
[INFO] running `Command { std: "docker" "inspect" "65918d17eeac951297762131651f47be71c98b316c04e0c1c6956c662a3c2d90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65918d17eeac951297762131651f47be71c98b316c04e0c1c6956c662a3c2d90", kill_on_drop: false }`
[INFO] [stdout] 65918d17eeac951297762131651f47be71c98b316c04e0c1c6956c662a3c2d90