[INFO] fetching crate spectrogram 0.1.0...
[INFO] documenting spectrogram-0.1.0 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate spectrogram 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate spectrogram 0.1.0 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 spectrogram 0.1.0
[INFO] finished tweaking crates.io crate spectrogram 0.1.0
[INFO] tweaked toml for crates.io crate spectrogram 0.1.0 written to /workspace/builds/worker-4/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 bytemuck v1.4.0
[INFO] [stderr]   Downloaded goertzel v0.2.0
[INFO] [stderr]   Downloaded image v0.23.9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 39b0e7274632a9ffe49f6047196d30c0757a8e532ae1d6992175b74649c760d0
[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" "39b0e7274632a9ffe49f6047196d30c0757a8e532ae1d6992175b74649c760d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "39b0e7274632a9ffe49f6047196d30c0757a8e532ae1d6992175b74649c760d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39b0e7274632a9ffe49f6047196d30c0757a8e532ae1d6992175b74649c760d0", kill_on_drop: false }`
[INFO] [stdout] 39b0e7274632a9ffe49f6047196d30c0757a8e532ae1d6992175b74649c760d0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 8129dee6be7b1db5c78c99217114173bc0c6d5c9550859aa298c94f6437c0f1c
[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" "8129dee6be7b1db5c78c99217114173bc0c6d5c9550859aa298c94f6437c0f1c", kill_on_drop: false }`
[INFO] [stderr]     Checking bytemuck v1.4.0
[INFO] [stderr]     Checking hound v3.4.0
[INFO] [stderr]     Checking goertzel v0.2.0
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]     Checking miniz_oxide v0.3.7
[INFO] [stderr]    Compiling num-rational v0.3.0
[INFO] [stderr]     Checking deflate v0.8.6
[INFO] [stderr]     Checking png v0.16.7
[INFO] [stderr]     Checking tiff v0.5.0
[INFO] [stderr]     Checking num-iter v0.1.41
[INFO] [stderr]     Checking image v0.23.9
[INFO] [stderr]  Documenting spectrogram v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.06s
[INFO] running `Command { std: "docker" "inspect" "8129dee6be7b1db5c78c99217114173bc0c6d5c9550859aa298c94f6437c0f1c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8129dee6be7b1db5c78c99217114173bc0c6d5c9550859aa298c94f6437c0f1c", kill_on_drop: false }`
[INFO] [stdout] 8129dee6be7b1db5c78c99217114173bc0c6d5c9550859aa298c94f6437c0f1c