[INFO] fetching crate dcc-lsystem 0.6.2...
[INFO] documenting dcc-lsystem-0.6.2 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate dcc-lsystem 0.6.2 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate dcc-lsystem 0.6.2 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 dcc-lsystem 0.6.2
[INFO] finished tweaking crates.io crate dcc-lsystem 0.6.2
[INFO] tweaked toml for crates.io crate dcc-lsystem 0.6.2 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate dcc-lsystem 0.6.2 already has a lockfile, it will not be regenerated
[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 rgb v0.8.16
[INFO] [stderr]   Downloaded natord v1.0.9
[INFO] [stderr]   Downloaded imagequant v2.12.5
[INFO] [stderr]   Downloaded lodepng v2.5.0
[INFO] [stderr]   Downloaded resize v0.3.1
[INFO] [stderr]   Downloaded imageproc v0.19.2
[INFO] [stderr]   Downloaded dyn-clone v1.0.1
[INFO] [stderr]   Downloaded gifski v0.10.0
[INFO] [stderr]   Downloaded dcc-lsystem-derive v0.1.2
[INFO] [stderr]   Downloaded wild v2.0.2
[INFO] [stderr]   Downloaded gif-dispose v2.2.0
[INFO] [stderr]   Downloaded imgref v1.4.0
[INFO] [stderr]   Downloaded imagequant-sys v2.12.5
[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] 4eb501ecb000a8e2b3218bf73adb959b1c1c84b69aa11f178d65f8319d4e3191
[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" "4eb501ecb000a8e2b3218bf73adb959b1c1c84b69aa11f178d65f8319d4e3191", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4eb501ecb000a8e2b3218bf73adb959b1c1c84b69aa11f178d65f8319d4e3191", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4eb501ecb000a8e2b3218bf73adb959b1c1c84b69aa11f178d65f8319d4e3191", kill_on_drop: false }`
[INFO] [stdout] 4eb501ecb000a8e2b3218bf73adb959b1c1c84b69aa11f178d65f8319d4e3191
[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] dff5cb256d8fcd4e91ee4d73d3809b0f4eb27c346cee8eb1035a54745675963b
[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" "dff5cb256d8fcd4e91ee4d73d3809b0f4eb27c346cee8eb1035a54745675963b", 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking rgb v0.8.16
[INFO] [stderr]    Compiling matrixmultiply v0.1.15
[INFO] [stderr]     Checking arrayvec v0.5.1
[INFO] [stderr]     Checking rawpointer v0.1.0
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]     Checking imgref v1.4.0
[INFO] [stderr]     Checking custom_derive v0.1.7
[INFO] [stderr]     Checking wild v2.0.2
[INFO] [stderr]     Checking resize v0.3.1
[INFO] [stderr]     Checking natord v1.0.9
[INFO] [stderr]     Checking dyn-clone v1.0.1
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling num-rational v0.2.3
[INFO] [stderr]    Compiling error-chain v0.12.1
[INFO] [stderr]    Compiling imagequant-sys v2.12.5
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]     Checking crossbeam-queue v0.2.1
[INFO] [stderr]     Checking conv v0.3.3
[INFO] [stderr]     Checking pbr v1.0.2
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking tiff v0.3.1
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking rusttype v0.8.2
[INFO] [stderr]     Checking rayon-core v1.7.0
[INFO] [stderr]     Checking lodepng v2.5.0
[INFO] [stderr]     Checking gif-dispose v2.2.0
[INFO] [stderr]     Checking png v0.15.3
[INFO] [stderr]     Checking rusttype v0.7.9
[INFO] [stderr]     Checking rayon v1.3.0
[INFO] [stderr]     Checking num-iter v0.1.40
[INFO] [stderr]     Checking num-bigint v0.2.6
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking rulinalg v0.4.2
[INFO] [stderr]     Checking imagequant v2.12.5
[INFO] [stderr]     Checking num v0.2.1
[INFO] [stderr]     Checking jpeg-decoder v0.1.18
[INFO] [stderr]     Checking gifski v0.10.0
[INFO] [stderr]     Checking image v0.22.5
[INFO] [stderr]    Compiling dcc-lsystem-derive v0.1.2
[INFO] [stderr]     Checking imageproc v0.19.2
[INFO] [stderr]  Documenting dcc-lsystem v0.6.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: Rust code block is empty
[INFO] [stdout]    --> src/arena.rs:211:9
[INFO] [stdout]     |
[INFO] [stdout] 211 |     /// ```
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout] help: mark blocks that do not contain Rust code as text
[INFO] [stdout]     |
[INFO] [stdout] 211 |     /// ```text
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 34.56s
[INFO] running `Command { std: "docker" "inspect" "dff5cb256d8fcd4e91ee4d73d3809b0f4eb27c346cee8eb1035a54745675963b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dff5cb256d8fcd4e91ee4d73d3809b0f4eb27c346cee8eb1035a54745675963b", kill_on_drop: false }`
[INFO] [stdout] dff5cb256d8fcd4e91ee4d73d3809b0f4eb27c346cee8eb1035a54745675963b