[INFO] fetching crate ns-std-threaded 0.3.0...
[INFO] checking ns-std-threaded-0.3.0 against beta for pr-78714
[INFO] extracting crate ns-std-threaded 0.3.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate ns-std-threaded 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 ns-std-threaded 0.3.0
[INFO] finished tweaking crates.io crate ns-std-threaded 0.3.0
[INFO] tweaked toml for crates.io crate ns-std-threaded 0.3.0 written to /workspace/builds/worker-0/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] 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-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 863a5365c887e865d8ba6d6de3a92a27cde942c8c619a02fa60c07f4955673f2
[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" "863a5365c887e865d8ba6d6de3a92a27cde942c8c619a02fa60c07f4955673f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "863a5365c887e865d8ba6d6de3a92a27cde942c8c619a02fa60c07f4955673f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "863a5365c887e865d8ba6d6de3a92a27cde942c8c619a02fa60c07f4955673f2", kill_on_drop: false }`
[INFO] [stdout] 863a5365c887e865d8ba6d6de3a92a27cde942c8c619a02fa60c07f4955673f2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2b4a3c38279c406b514dd655dfaa4f23b8666059297e213ce48768a42c4cd67e
[INFO] running `Command { std: "docker" "start" "-a" "2b4a3c38279c406b514dd655dfaa4f23b8666059297e213ce48768a42c4cd67e", kill_on_drop: false }`
[INFO] [stderr]     Checking abstract-ns v0.4.3
[INFO] [stderr]     Checking ns-std-threaded v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.40s
[INFO] running `Command { std: "docker" "inspect" "2b4a3c38279c406b514dd655dfaa4f23b8666059297e213ce48768a42c4cd67e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b4a3c38279c406b514dd655dfaa4f23b8666059297e213ce48768a42c4cd67e", kill_on_drop: false }`
[INFO] [stdout] 2b4a3c38279c406b514dd655dfaa4f23b8666059297e213ce48768a42c4cd67e