[INFO] fetching crate smolsocket 0.3.0...
[INFO] checking smolsocket-0.3.0 against beta for pr-78714
[INFO] extracting crate smolsocket 0.3.0 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate smolsocket 0.3.0 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 smolsocket 0.3.0
[INFO] finished tweaking crates.io crate smolsocket 0.3.0
[INFO] tweaked toml for crates.io crate smolsocket 0.3.0 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9dfa6470b6bd4862c38cf5b47b3a93a757f413ed5fb905bf9f00777e7ce74d73
[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" "9dfa6470b6bd4862c38cf5b47b3a93a757f413ed5fb905bf9f00777e7ce74d73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9dfa6470b6bd4862c38cf5b47b3a93a757f413ed5fb905bf9f00777e7ce74d73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9dfa6470b6bd4862c38cf5b47b3a93a757f413ed5fb905bf9f00777e7ce74d73", kill_on_drop: false }`
[INFO] [stdout] 9dfa6470b6bd4862c38cf5b47b3a93a757f413ed5fb905bf9f00777e7ce74d73
[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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3b4162aa172c016f27609d42191f0669e76a370a617aae1b935826eecdef31bc
[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" "3b4162aa172c016f27609d42191f0669e76a370a617aae1b935826eecdef31bc", kill_on_drop: false }`
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking managed v0.7.2
[INFO] [stderr]     Checking pretty_env_logger v0.3.1
[INFO] [stderr]     Checking smoltcp v0.6.0
[INFO] [stderr]     Checking smolsocket v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.90s
[INFO] running `Command { std: "docker" "inspect" "3b4162aa172c016f27609d42191f0669e76a370a617aae1b935826eecdef31bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b4162aa172c016f27609d42191f0669e76a370a617aae1b935826eecdef31bc", kill_on_drop: false }`
[INFO] [stdout] 3b4162aa172c016f27609d42191f0669e76a370a617aae1b935826eecdef31bc