[INFO] fetching crate digital-filter 0.1.1...
[INFO] documenting digital-filter-0.1.1 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate digital-filter 0.1.1 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate digital-filter 0.1.1 on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate digital-filter 0.1.1
[INFO] finished tweaking crates.io crate digital-filter 0.1.1
[INFO] tweaked toml for crates.io crate digital-filter 0.1.1 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3a4b3bb65e28b2ee64b01d7967383fb4eb23c3ad3b4c392317314c66e6fefbe2
[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" "3a4b3bb65e28b2ee64b01d7967383fb4eb23c3ad3b4c392317314c66e6fefbe2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3a4b3bb65e28b2ee64b01d7967383fb4eb23c3ad3b4c392317314c66e6fefbe2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a4b3bb65e28b2ee64b01d7967383fb4eb23c3ad3b4c392317314c66e6fefbe2", kill_on_drop: false }`
[INFO] [stdout] 3a4b3bb65e28b2ee64b01d7967383fb4eb23c3ad3b4c392317314c66e6fefbe2
[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" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 13ca411780eb34c139e24929cf88c2baa8f81c78e7aa60335a7050e817131789
[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" "13ca411780eb34c139e24929cf88c2baa8f81c78e7aa60335a7050e817131789", kill_on_drop: false }`
[INFO] [stderr]    Compiling heapless v0.5.5
[INFO] [stderr]  Documenting digital-filter v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.40s
[INFO] running `Command { std: "docker" "inspect" "13ca411780eb34c139e24929cf88c2baa8f81c78e7aa60335a7050e817131789", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "13ca411780eb34c139e24929cf88c2baa8f81c78e7aa60335a7050e817131789", kill_on_drop: false }`
[INFO] [stdout] 13ca411780eb34c139e24929cf88c2baa8f81c78e7aa60335a7050e817131789