[INFO] fetching crate milf 0.5.8...
[INFO] checking milf-0.5.8 against master#4fa76a4a7742bb9c1febe33019f5a9e7e4839a65 for pr-83744
[INFO] extracting crate milf 0.5.8 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate milf 0.5.8 on toolchain 4fa76a4a7742bb9c1febe33019f5a9e7e4839a65
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate milf 0.5.8
[INFO] finished tweaking crates.io crate milf 0.5.8
[INFO] tweaked toml for crates.io crate milf 0.5.8 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate milf 0.5.8 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "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-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fb92519aa8dc904da2c8dd36d95d8372a9023af6de6a367511632dcaca0af11a
[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" "fb92519aa8dc904da2c8dd36d95d8372a9023af6de6a367511632dcaca0af11a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fb92519aa8dc904da2c8dd36d95d8372a9023af6de6a367511632dcaca0af11a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb92519aa8dc904da2c8dd36d95d8372a9023af6de6a367511632dcaca0af11a", kill_on_drop: false }`
[INFO] [stdout] fb92519aa8dc904da2c8dd36d95d8372a9023af6de6a367511632dcaca0af11a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "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] a7f86ea56a16c75156d72e08ef895d4ef24ec1ec2e2ca2d5cb6a01d6f663cac7
[INFO] running `Command { std: "docker" "start" "-a" "a7f86ea56a16c75156d72e08ef895d4ef24ec1ec2e2ca2d5cb6a01d6f663cac7", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.124
[INFO] [stderr]    Compiling syn v1.0.64
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling serde_derive v1.0.124
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking milf v0.5.8 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 23.71s
[INFO] running `Command { std: "docker" "inspect" "a7f86ea56a16c75156d72e08ef895d4ef24ec1ec2e2ca2d5cb6a01d6f663cac7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7f86ea56a16c75156d72e08ef895d4ef24ec1ec2e2ca2d5cb6a01d6f663cac7", kill_on_drop: false }`
[INFO] [stdout] a7f86ea56a16c75156d72e08ef895d4ef24ec1ec2e2ca2d5cb6a01d6f663cac7