[INFO] fetching crate rustneat 0.2.1...
[INFO] documenting rustneat-0.2.1 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate rustneat 0.2.1 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate rustneat 0.2.1 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 rustneat 0.2.1
[INFO] finished tweaking crates.io crate rustneat 0.2.1
[INFO] tweaked toml for crates.io crate rustneat 0.2.1 written to /workspace/builds/worker-2/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 quine-mc_cluskey v0.2.4
[INFO] [stderr]   Downloaded open v1.4.0
[INFO] [stderr]   Downloaded semver v0.2.3
[INFO] [stderr]   Downloaded clippy_lints v0.0.103
[INFO] [stderr]   Downloaded rusty_dashed v0.2.1
[INFO] [stderr]   Downloaded clippy v0.0.103
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ba21f8228b1876f0bca6db8c9ffc8d39b28c4c23fffbbf37c06614e8c4d5c4af
[INFO] running `Command { std: "docker" "start" "-a" "ba21f8228b1876f0bca6db8c9ffc8d39b28c4c23fffbbf37c06614e8c4d5c4af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ba21f8228b1876f0bca6db8c9ffc8d39b28c4c23fffbbf37c06614e8c4d5c4af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba21f8228b1876f0bca6db8c9ffc8d39b28c4c23fffbbf37c06614e8c4d5c4af", kill_on_drop: false }`
[INFO] [stdout] ba21f8228b1876f0bca6db8c9ffc8d39b28c4c23fffbbf37c06614e8c4d5c4af
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2ced96368eb45c61925e0205250612e9d3f2712b79a714c2ff3fbca0a839783e
[INFO] running `Command { std: "docker" "start" "-a" "2ced96368eb45c61925e0205250612e9d3f2712b79a714c2ff3fbca0a839783e", kill_on_drop: false }`
[INFO] [stderr]    Compiling matrixmultiply v0.1.15
[INFO] [stderr]     Checking rawpointer v0.1.0
[INFO] [stderr]     Checking custom_derive v0.1.7
[INFO] [stderr]     Checking conv v0.3.3
[INFO] [stderr]     Checking rulinalg v0.3.7
[INFO] [stderr]  Documenting rustneat v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/mutation.rs:14:73
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn add_connection(in_neuron_id: usize, out_neuron_id: usize) -> (Gene) {
[INFO] [stdout]    |                                                                         ^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.47s
[INFO] running `Command { std: "docker" "inspect" "2ced96368eb45c61925e0205250612e9d3f2712b79a714c2ff3fbca0a839783e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ced96368eb45c61925e0205250612e9d3f2712b79a714c2ff3fbca0a839783e", kill_on_drop: false }`
[INFO] [stdout] 2ced96368eb45c61925e0205250612e9d3f2712b79a714c2ff3fbca0a839783e