[INFO] fetching crate flac 0.5.0...
[INFO] documenting flac-0.5.0 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate flac 0.5.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate flac 0.5.0 on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate flac 0.5.0
[INFO] finished tweaking crates.io crate flac 0.5.0
[INFO] tweaked toml for crates.io crate flac 0.5.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "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" "+1.46.0" "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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a4992bcc21a584748eb32894ffb3a347c69a96be676bbc8b822663d549d5bca6
[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" "a4992bcc21a584748eb32894ffb3a347c69a96be676bbc8b822663d549d5bca6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a4992bcc21a584748eb32894ffb3a347c69a96be676bbc8b822663d549d5bca6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4992bcc21a584748eb32894ffb3a347c69a96be676bbc8b822663d549d5bca6", kill_on_drop: false }`
[INFO] [stdout] a4992bcc21a584748eb32894ffb3a347c69a96be676bbc8b822663d549d5bca6
[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" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 24fc416bb75c57c5a8fbc03dc86fb431f6b884c575df465c7f423c6a57f73b7b
[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" "24fc416bb75c57c5a8fbc03dc86fb431f6b884c575df465c7f423c6a57f73b7b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking strsim v0.5.2
[INFO] [stderr]     Checking hound v1.1.0
[INFO] [stderr]     Checking docopt v0.6.86
[INFO] [stderr]  Documenting flac v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.34s
[INFO] running `Command { std: "docker" "inspect" "24fc416bb75c57c5a8fbc03dc86fb431f6b884c575df465c7f423c6a57f73b7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24fc416bb75c57c5a8fbc03dc86fb431f6b884c575df465c7f423c6a57f73b7b", kill_on_drop: false }`
[INFO] [stdout] 24fc416bb75c57c5a8fbc03dc86fb431f6b884c575df465c7f423c6a57f73b7b