[INFO] fetching crate rar 0.2.0...
[INFO] documenting rar-0.2.0 against 1.47.0 for beta-1.48-rustdoc-1
[INFO] extracting crate rar 0.2.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate rar 0.2.0 on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rar 0.2.0
[INFO] finished tweaking crates.io crate rar 0.2.0
[INFO] tweaked toml for crates.io crate rar 0.2.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b4b3ffb6faafbb5f8af3718f1ad6105cd83a5366138db58af5e6fa4cf2621d96
[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" "b4b3ffb6faafbb5f8af3718f1ad6105cd83a5366138db58af5e6fa4cf2621d96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b4b3ffb6faafbb5f8af3718f1ad6105cd83a5366138db58af5e6fa4cf2621d96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4b3ffb6faafbb5f8af3718f1ad6105cd83a5366138db58af5e6fa4cf2621d96", kill_on_drop: false }`
[INFO] [stdout] b4b3ffb6faafbb5f8af3718f1ad6105cd83a5366138db58af5e6fa4cf2621d96
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+1.47.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8bb1c88b5186711981a869001004cd4de10dc36930be8a2b1415f486c1f034ed
[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" "8bb1c88b5186711981a869001004cd4de10dc36930be8a2b1415f486c1f034ed", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Documenting rar v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/sig_block.rs:18:32
[INFO] [stdout]    |
[INFO] [stdout] 18 | named!(rar_signature(&[u8]) -> (SignatureBlock), 
[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 type
[INFO] [stdout]    --> src/head_block.rs:143:30
[INFO] [stdout]     |
[INFO] [stdout] 143 | named!(base_header(&[u8]) -> (HeadBlock), 
[INFO] [stdout]     |                              ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/vint.rs:60:31
[INFO] [stdout]    |
[INFO] [stdout] 60 | named!(collect_vint(&[u8]) -> (&[u8]),
[INFO] [stdout]    |                               ^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/vint.rs:74:27
[INFO] [stdout]    |
[INFO] [stdout] 74 | named!(take_one(&[u8]) -> (&[u8]),
[INFO] [stdout]    |                           ^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.71s
[INFO] running `Command { std: "docker" "inspect" "8bb1c88b5186711981a869001004cd4de10dc36930be8a2b1415f486c1f034ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8bb1c88b5186711981a869001004cd4de10dc36930be8a2b1415f486c1f034ed", kill_on_drop: false }`
[INFO] [stdout] 8bb1c88b5186711981a869001004cd4de10dc36930be8a2b1415f486c1f034ed
