[INFO] fetching crate preftool-app-config 0.2.0...
[INFO] documenting preftool-app-config-0.2.0 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate preftool-app-config 0.2.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate preftool-app-config 0.2.0 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 preftool-app-config 0.2.0
[INFO] finished tweaking crates.io crate preftool-app-config 0.2.0
[INFO] tweaked toml for crates.io crate preftool-app-config 0.2.0 written to /workspace/builds/worker-0/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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded preftool-env v0.2.0
[INFO] [stderr]   Downloaded trackable v0.2.23
[INFO] [stderr]   Downloaded slog-async v2.5.0
[INFO] [stderr]   Downloaded trackable_derive v0.1.3
[INFO] [stderr]   Downloaded preftool-clap-derive v0.2.0
[INFO] [stderr]   Downloaded slog-term v2.6.0
[INFO] [stderr]   Downloaded term v0.6.1
[INFO] [stderr]   Downloaded sloggers v0.3.6
[INFO] [stderr]   Downloaded slog-kvfilter v0.7.0
[INFO] [stderr]   Downloaded preftool-toml v0.2.0
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e45da771c6f591eaff2faeba67d6df21ce0735004c14a9d9be89de26b496f5ef
[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" "e45da771c6f591eaff2faeba67d6df21ce0735004c14a9d9be89de26b496f5ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e45da771c6f591eaff2faeba67d6df21ce0735004c14a9d9be89de26b496f5ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e45da771c6f591eaff2faeba67d6df21ce0735004c14a9d9be89de26b496f5ef", kill_on_drop: false }`
[INFO] [stdout] e45da771c6f591eaff2faeba67d6df21ce0735004c14a9d9be89de26b496f5ef
[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" "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] e8174b70c7c257dac8ba9b0c1e3ba31901f65ba300c88f8a5364f930a690df35
[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" "e8174b70c7c257dac8ba9b0c1e3ba31901f65ba300c88f8a5364f930a690df35", kill_on_drop: false }`
[INFO] [stderr]     Checking dirs-sys v0.1.0
[INFO] [stderr]     Checking error-chain v0.12.4
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]     Checking preftool v0.2.0
[INFO] [stderr]     Checking preftool-dirs v0.2.0
[INFO] [stderr]     Checking preftool-clap v0.2.0
[INFO] [stderr]     Checking preftool-env v0.2.0
[INFO] [stderr]     Checking preftool-file v0.2.0
[INFO] [stderr]     Checking preftool-toml v0.2.0
[INFO] [stderr]  Documenting preftool-app-config v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.98s
[INFO] running `Command { std: "docker" "inspect" "e8174b70c7c257dac8ba9b0c1e3ba31901f65ba300c88f8a5364f930a690df35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8174b70c7c257dac8ba9b0c1e3ba31901f65ba300c88f8a5364f930a690df35", kill_on_drop: false }`
[INFO] [stdout] e8174b70c7c257dac8ba9b0c1e3ba31901f65ba300c88f8a5364f930a690df35