[INFO] fetching crate topfew 0.2.0...
[INFO] checking topfew-0.2.0 against beta for pr-78714
[INFO] extracting crate topfew 0.2.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate topfew 0.2.0 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 topfew 0.2.0
[INFO] finished tweaking crates.io crate topfew 0.2.0
[INFO] tweaked toml for crates.io crate topfew 0.2.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate topfew 0.2.0 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]     Blocking waiting for file lock on package cache
[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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5037056f7ed544681feb22620912e84dcb9b53626d99a110d342b0f2f3e54c0f
[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" "5037056f7ed544681feb22620912e84dcb9b53626d99a110d342b0f2f3e54c0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5037056f7ed544681feb22620912e84dcb9b53626d99a110d342b0f2f3e54c0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5037056f7ed544681feb22620912e84dcb9b53626d99a110d342b0f2f3e54c0f", kill_on_drop: false }`
[INFO] [stdout] 5037056f7ed544681feb22620912e84dcb9b53626d99a110d342b0f2f3e54c0f
[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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b255c36a6e79c343487a694dd6b0b2fa42c7979652cf18b2aad430d0453fcf53
[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" "b255c36a6e79c343487a694dd6b0b2fa42c7979652cf18b2aad430d0453fcf53", kill_on_drop: false }`
[INFO] [stderr]     Checking crossbeam-utils v0.8.0
[INFO] [stderr]     Checking ahash v0.5.6
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking crossbeam-epoch v0.9.0
[INFO] [stderr]     Checking crossbeam-channel v0.5.0
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling structopt-derive v0.4.13
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking rayon-core v1.9.0
[INFO] [stderr]     Checking quickcheck v0.9.2
[INFO] [stderr]     Checking rayon v1.5.0
[INFO] [stderr]     Checking structopt v0.3.20
[INFO] [stderr]     Checking topfew v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.32s
[INFO] running `Command { std: "docker" "inspect" "b255c36a6e79c343487a694dd6b0b2fa42c7979652cf18b2aad430d0453fcf53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b255c36a6e79c343487a694dd6b0b2fa42c7979652cf18b2aad430d0453fcf53", kill_on_drop: false }`
[INFO] [stdout] b255c36a6e79c343487a694dd6b0b2fa42c7979652cf18b2aad430d0453fcf53