[INFO] fetching crate engraver 2.5.0...
[INFO] documenting engraver-2.5.0 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate engraver 2.5.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate engraver 2.5.0 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 engraver 2.5.0
[INFO] finished tweaking crates.io crate engraver 2.5.0
[INFO] tweaked toml for crates.io crate engraver 2.5.0 written to /workspace/builds/worker-6/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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded page_size v0.4.2
[INFO] [stderr]   Downloaded stopwatch v0.0.7
[INFO] [stderr]   Downloaded sys-info v0.5.10
[INFO] [stderr]   Downloaded core_affinity v0.5.10
[INFO] [stderr]   Downloaded humanize-rs v0.1.5
[INFO] [stderr]   Downloaded pbr v1.0.3
[INFO] [stderr]   Downloaded ocl-core-vector v0.1.0
[INFO] [stderr]   Downloaded thread-priority v0.1.1
[INFO] [stderr]   Downloaded raw-cpuid v6.1.0
[INFO] [stderr]   Downloaded aligned_alloc v0.1.3
[INFO] [stderr]   Downloaded ocl-core v0.11.2
[INFO] [stderr]   Downloaded cl-sys v0.4.2
[INFO] [stderr]   Downloaded rustc_version v0.1.7
[INFO] [stderr]   Downloaded semver v0.1.20
[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" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e64ad7145f1f19368b631a1e8c51f9b0f1bebf05ecdba9073e23993015e4af20
[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" "e64ad7145f1f19368b631a1e8c51f9b0f1bebf05ecdba9073e23993015e4af20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e64ad7145f1f19368b631a1e8c51f9b0f1bebf05ecdba9073e23993015e4af20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e64ad7145f1f19368b631a1e8c51f9b0f1bebf05ecdba9073e23993015e4af20", kill_on_drop: false }`
[INFO] [stdout] e64ad7145f1f19368b631a1e8c51f9b0f1bebf05ecdba9073e23993015e4af20
[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" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 87b3c406f4d1a56e35ac74f2793dd997ac2f1fe7a3213b197fb9b834c2f2ff5c
[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" "87b3c406f4d1a56e35ac74f2793dd997ac2f1fe7a3213b197fb9b834c2f2ff5c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking humanize-rs v0.1.5
[INFO] [stderr]    Compiling sys-info v0.5.10
[INFO] [stderr]    Compiling engraver v2.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking crossbeam-channel v0.3.9
[INFO] [stderr]    Compiling raw-cpuid v6.1.0
[INFO] [stderr]     Checking page_size v0.4.2
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking pbr v1.0.3
[INFO] [stderr]     Checking aligned_alloc v0.1.3
[INFO] [stderr]     Checking stopwatch v0.0.7
[INFO] [stderr]     Checking core_affinity v0.5.10
[INFO] [stderr]  Documenting engraver v2.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]  --> src/cpu_hasher.rs:8:27
[INFO] [stdout]   |
[INFO] [stdout] 8 | const NONCE_SIZE: usize = (NUM_SCOOPS * SCOOP_SIZE);
[INFO] [stdout]   |                           ^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]  --> src/poc_hashing.rs:7:27
[INFO] [stdout]   |
[INFO] [stdout] 7 | const NONCE_SIZE: usize = (NUM_SCOOPS * SCOOP_SIZE);
[INFO] [stdout]   |                           ^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.65s
[INFO] running `Command { std: "docker" "inspect" "87b3c406f4d1a56e35ac74f2793dd997ac2f1fe7a3213b197fb9b834c2f2ff5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87b3c406f4d1a56e35ac74f2793dd997ac2f1fe7a3213b197fb9b834c2f2ff5c", kill_on_drop: false }`
[INFO] [stdout] 87b3c406f4d1a56e35ac74f2793dd997ac2f1fe7a3213b197fb9b834c2f2ff5c