[INFO] fetching crate bn 0.4.3...
[INFO] documenting bn-0.4.3 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate bn 0.4.3 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate bn 0.4.3 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 bn 0.4.3
[INFO] finished tweaking crates.io crate bn 0.4.3
[INFO] tweaked toml for crates.io crate bn 0.4.3 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] 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] 640ec9c18482b0965c4cb3358f9bbb2891e960db2e72a80c7ed0e2c5ca0e76e7
[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" "640ec9c18482b0965c4cb3358f9bbb2891e960db2e72a80c7ed0e2c5ca0e76e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "640ec9c18482b0965c4cb3358f9bbb2891e960db2e72a80c7ed0e2c5ca0e76e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "640ec9c18482b0965c4cb3358f9bbb2891e960db2e72a80c7ed0e2c5ca0e76e7", kill_on_drop: false }`
[INFO] [stdout] 640ec9c18482b0965c4cb3358f9bbb2891e960db2e72a80c7ed0e2c5ca0e76e7
[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] 116379fa25da06e59f603ef51287d4e78b5125266a9e4377fe2a1be20e24dfa6
[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" "116379fa25da06e59f603ef51287d4e78b5125266a9e4377fe2a1be20e24dfa6", kill_on_drop: false }`
[INFO] [stderr]     Checking byteorder v0.5.3
[INFO] [stderr]  Documenting bn v0.4.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around const expression
[INFO] [stdout]    --> src/arith.rs:102:27
[INFO] [stdout]     |
[INFO] [stdout] 102 |         let mut buf = [0; (8 * 8)];
[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 const expression
[INFO] [stdout]    --> src/arith.rs:118:27
[INFO] [stdout]     |
[INFO] [stdout] 118 |         let mut buf = [0; (8 * 8)];
[INFO] [stdout]     |                           ^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around const expression
[INFO] [stdout]    --> src/arith.rs:130:27
[INFO] [stdout]     |
[INFO] [stdout] 130 |         let mut buf = [0; (4 * 8)];
[INFO] [stdout]     |                           ^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around const expression
[INFO] [stdout]    --> src/arith.rs:146:27
[INFO] [stdout]     |
[INFO] [stdout] 146 |         let mut buf = [0; (4 * 8)];
[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 2.13s
[INFO] running `Command { std: "docker" "inspect" "116379fa25da06e59f603ef51287d4e78b5125266a9e4377fe2a1be20e24dfa6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "116379fa25da06e59f603ef51287d4e78b5125266a9e4377fe2a1be20e24dfa6", kill_on_drop: false }`
[INFO] [stdout] 116379fa25da06e59f603ef51287d4e78b5125266a9e4377fe2a1be20e24dfa6