[INFO] cloning repository https://github.com/JordanJTW/RUST-8
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JordanJTW/RUST-8" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJordanJTW%2FRUST-8", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJordanJTW%2FRUST-8'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0d21b0a4d0d76381d3b75191ccdcca37178bbd2c
[INFO] documenting JordanJTW/RUST-8 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJordanJTW%2FRUST-8" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/JordanJTW/RUST-8 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 git repo https://github.com/JordanJTW/RUST-8
[INFO] finished tweaking git repo https://github.com/JordanJTW/RUST-8
[INFO] tweaked toml for git repo https://github.com/JordanJTW/RUST-8 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/JordanJTW/RUST-8 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 bumpalo v2.3.0
[INFO] [stderr]   Downloaded regex-syntax v0.6.5
[INFO] [stderr]   Downloaded regex v1.1.2
[INFO] [stderr]   Downloaded backtrace v0.3.14
[INFO] [stderr]   Downloaded andrew v0.2.0
[INFO] [stderr]   Downloaded wasm-bindgen-macro-support v0.2.40
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.40
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.40
[INFO] [stderr]   Downloaded wasm-bindgen-backend v0.2.40
[INFO] [stderr]   Downloaded gleam v0.6.14
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.40
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 2df2b23be9270808440d92ff6b5c98710daa0edaaebd0307a4b33eb06c3c0a62
[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" "2df2b23be9270808440d92ff6b5c98710daa0edaaebd0307a4b33eb06c3c0a62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2df2b23be9270808440d92ff6b5c98710daa0edaaebd0307a4b33eb06c3c0a62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2df2b23be9270808440d92ff6b5c98710daa0edaaebd0307a4b33eb06c3c0a62", kill_on_drop: false }`
[INFO] [stdout] 2df2b23be9270808440d92ff6b5c98710daa0edaaebd0307a4b33eb06c3c0a62
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] ddc66a80fbc0c149ae77040646f6e93863bbc238497495167fbeb18c3eb7fa01
[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" "ddc66a80fbc0c149ae77040646f6e93863bbc238497495167fbeb18c3eb7fa01", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v0.15.29
[INFO] [stderr]    Compiling khronos_api v3.0.0
[INFO] [stderr]    Compiling nix v0.12.0
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.40
[INFO] [stderr]    Compiling num-derive v0.2.4
[INFO] [stderr]    Compiling bumpalo v2.3.0
[INFO] [stderr]     Checking safe-transmute v0.10.1
[INFO] [stderr]    Compiling wasm-bindgen v0.2.40
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling libloading v0.5.0
[INFO] [stderr]     Checking nix v0.13.0
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking shared_library v0.1.9
[INFO] [stderr]     Checking x11-dl v2.18.3
[INFO] [stderr]    Compiling wayland-scanner v0.21.11
[INFO] [stderr]     Checking rusttype v0.7.5
[INFO] [stderr]     Checking regex v1.1.2
[INFO] [stderr]     Checking rayon-core v1.4.1
[INFO] [stderr]     Checking parking_lot_core v0.4.0
[INFO] [stderr]     Checking png v0.14.0
[INFO] [stderr]     Checking osmesa-sys v0.1.2
[INFO] [stderr]    Compiling gl_generator v0.9.0
[INFO] [stderr]     Checking parking_lot v0.7.1
[INFO] [stderr]     Checking andrew v0.2.0
[INFO] [stderr]     Checking piston2d-graphics v0.30.0
[INFO] [stderr]     Checking dlib v0.4.1
[INFO] [stderr]     Checking rayon v1.0.3
[INFO] [stderr]    Compiling gl_generator v0.10.0
[INFO] [stderr]     Checking wayland-sys v0.21.11
[INFO] [stderr]     Checking env_logger v0.6.1
[INFO] [stderr]    Compiling gfx_gl v0.5.0
[INFO] [stderr]    Compiling glutin v0.19.0
[INFO] [stderr]    Compiling gl v0.11.0
[INFO] [stderr]    Compiling wayland-client v0.21.11
[INFO] [stderr]    Compiling wayland-protocols v0.21.11
[INFO] [stderr]     Checking jpeg-decoder v0.1.15
[INFO] [stderr]     Checking wayland-commons v0.21.11
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.40
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.40
[INFO] [stderr]    Compiling derivative v1.0.2
[INFO] [stderr]    Compiling serde_derive v1.0.89
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.40
[INFO] [stderr]     Checking tiff v0.2.2
[INFO] [stderr]     Checking image v0.21.0
[INFO] [stderr]     Checking console_error_panic_hook v0.1.6
[INFO] [stderr]     Checking gfx_core v0.8.3
[INFO] [stderr]     Checking smithay-client-toolkit v0.4.5
[INFO] [stderr]     Checking pistoncore-input v0.24.0
[INFO] [stderr]     Checking gfx v0.17.1
[INFO] [stderr]     Checking gfx_device_gl v0.15.5
[INFO] [stderr]     Checking winit v0.18.1
[INFO] [stderr]     Checking piston-gfx_texture v0.35.0
[INFO] [stderr]     Checking piston2d-gfx_graphics v0.56.0
[INFO] [stderr]     Checking pistoncore-window v0.37.0
[INFO] [stderr]     Checking pistoncore-event_loop v0.42.0
[INFO] [stderr]     Checking pistoncore-glutin_window v0.54.0
[INFO] [stderr]     Checking piston v0.42.0
[INFO] [stderr]     Checking piston_window v0.89.0
[INFO] [stderr]     Checking rust-8 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting rust-8 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/main.rs:138:44
[INFO] [stdout]     |
[INFO] [stdout] 138 | fn read_file(filename: &str) -> io::Result<(Vec<u8>)> {
[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 1m 54s
[INFO] running `Command { std: "docker" "inspect" "ddc66a80fbc0c149ae77040646f6e93863bbc238497495167fbeb18c3eb7fa01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ddc66a80fbc0c149ae77040646f6e93863bbc238497495167fbeb18c3eb7fa01", kill_on_drop: false }`
[INFO] [stdout] ddc66a80fbc0c149ae77040646f6e93863bbc238497495167fbeb18c3eb7fa01