[INFO] fetching crate sing 0.1.1...
[INFO] documenting sing-0.1.1 against 1.47.0 for beta-1.48-rustdoc-1
[INFO] extracting crate sing 0.1.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate sing 0.1.1 on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sing 0.1.1
[INFO] finished tweaking crates.io crate sing 0.1.1
[INFO] tweaked toml for crates.io crate sing 0.1.1 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate sing 0.1.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded spinner v0.5.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 92c7bc4b55c53a9ef19a6a8f17e1ee7d93a7c021331a911e23609a7307a2ac97
[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" "92c7bc4b55c53a9ef19a6a8f17e1ee7d93a7c021331a911e23609a7307a2ac97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "92c7bc4b55c53a9ef19a6a8f17e1ee7d93a7c021331a911e23609a7307a2ac97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92c7bc4b55c53a9ef19a6a8f17e1ee7d93a7c021331a911e23609a7307a2ac97", kill_on_drop: false }`
[INFO] [stdout] 92c7bc4b55c53a9ef19a6a8f17e1ee7d93a7c021331a911e23609a7307a2ac97
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+1.47.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 39c3b66012bc46ab92600ffa93bcdd14f6c9d19824d7cf43adf4ba85027c447c
[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" "39c3b66012bc46ab92600ffa93bcdd14f6c9d19824d7cf43adf4ba85027c447c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling cc v1.0.48
[INFO] [stderr]     Checking claxon v0.4.2
[INFO] [stderr]     Checking ogg v0.7.0
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]     Checking lewton v0.9.4
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking slice-deque v0.2.4
[INFO] [stderr]     Checking alsa-sys v0.1.2
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]    Compiling minimp3-sys v0.3.1
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking term v0.6.1
[INFO] [stderr]     Checking spinner v0.5.0
[INFO] [stderr]     Checking minimp3 v0.3.3
[INFO] [stderr]     Checking backtrace v0.3.40
[INFO] [stderr]     Checking failure v0.1.6
[INFO] [stderr]     Checking cpal v0.10.0
[INFO] [stderr]     Checking rodio v0.10.0
[INFO] [stderr]  Documenting sing v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.08s
[INFO] running `Command { std: "docker" "inspect" "39c3b66012bc46ab92600ffa93bcdd14f6c9d19824d7cf43adf4ba85027c447c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39c3b66012bc46ab92600ffa93bcdd14f6c9d19824d7cf43adf4ba85027c447c", kill_on_drop: false }`
[INFO] [stdout] 39c3b66012bc46ab92600ffa93bcdd14f6c9d19824d7cf43adf4ba85027c447c
