[INFO] fetching crate enc28j60 0.2.1...
[INFO] documenting enc28j60-0.2.1 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate enc28j60 0.2.1 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate enc28j60 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 enc28j60 0.2.1
[INFO] finished tweaking crates.io crate enc28j60 0.2.1
[INFO] tweaked toml for crates.io crate enc28j60 0.2.1 written to /workspace/builds/worker-9/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] [stderr]     Blocking waiting for file lock on package cache
[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-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] 2ded622c75adf0592debbee4dbc3e27c8d730c8d622a6d12c0c10d7a82ecf661
[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" "2ded622c75adf0592debbee4dbc3e27c8d730c8d622a6d12c0c10d7a82ecf661", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2ded622c75adf0592debbee4dbc3e27c8d730c8d622a6d12c0c10d7a82ecf661", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ded622c75adf0592debbee4dbc3e27c8d730c8d622a6d12c0c10d7a82ecf661", kill_on_drop: false }`
[INFO] [stdout] 2ded622c75adf0592debbee4dbc3e27c8d730c8d622a6d12c0c10d7a82ecf661
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] 9d5e10c953674dc9a0bd273988cc64d32ede918651ab4551abcbf6fc9e9fc5a2
[INFO] running `Command { std: "docker" "start" "-a" "9d5e10c953674dc9a0bd273988cc64d32ede918651ab4551abcbf6fc9e9fc5a2", kill_on_drop: false }`
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]     Checking embedded-hal v0.2.4
[INFO] [stderr]  Documenting enc28j60 v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary braces around method argument
[INFO] [stdout]    --> src/lib.rs:409:53
[INFO] [stdout]     |
[INFO] [stdout] 409 |         self.bit_field_clear(common::Register::EIR, { common::EIR::mask().txif() })?;
[INFO] [stdout]     |                                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:19:9
[INFO] [stdout]     |
[INFO] [stdout] 19  | #![deny(warnings)]
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     = note: `#[warn(unused_braces)]` implied by `#[warn(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.48s
[INFO] running `Command { std: "docker" "inspect" "9d5e10c953674dc9a0bd273988cc64d32ede918651ab4551abcbf6fc9e9fc5a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d5e10c953674dc9a0bd273988cc64d32ede918651ab4551abcbf6fc9e9fc5a2", kill_on_drop: false }`
[INFO] [stdout] 9d5e10c953674dc9a0bd273988cc64d32ede918651ab4551abcbf6fc9e9fc5a2