[INFO] fetching crate vial 0.1.8...
[INFO] checking vial-0.1.8 against master#b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18 for pr-79470
[INFO] extracting crate vial 0.1.8 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate vial 0.1.8 on toolchain b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate vial 0.1.8
[INFO] removed 6 missing examples
[INFO] finished tweaking crates.io crate vial 0.1.8
[INFO] tweaked toml for crates.io crate vial 0.1.8 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate vial 0.1.8 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5946fb6e9e65030636fe7412bf4141786f890546656f37d251aa51eb14b7dd77
[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" "5946fb6e9e65030636fe7412bf4141786f890546656f37d251aa51eb14b7dd77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5946fb6e9e65030636fe7412bf4141786f890546656f37d251aa51eb14b7dd77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5946fb6e9e65030636fe7412bf4141786f890546656f37d251aa51eb14b7dd77", kill_on_drop: false }`
[INFO] [stdout] 5946fb6e9e65030636fe7412bf4141786f890546656f37d251aa51eb14b7dd77
[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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6be263a79a270d2d2570040d27e0cfa0c5e8b3384203905901242072d47a4484
[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" "6be263a79a270d2d2570040d27e0cfa0c5e8b3384203905901242072d47a4484", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling vial v0.1.8 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking libc-strftime v0.2.0
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.41s
[INFO] running `Command { std: "docker" "inspect" "6be263a79a270d2d2570040d27e0cfa0c5e8b3384203905901242072d47a4484", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6be263a79a270d2d2570040d27e0cfa0c5e8b3384203905901242072d47a4484", kill_on_drop: false }`
[INFO] [stdout] 6be263a79a270d2d2570040d27e0cfa0c5e8b3384203905901242072d47a4484