[INFO] fetching crate cfg 0.5.0...
[INFO] documenting cfg-0.5.0 against 1.54.0 for beta-1.55-rustdoc-1
[INFO] extracting crate cfg 0.5.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate cfg 0.5.0 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cfg 0.5.0
[INFO] finished tweaking crates.io crate cfg 0.5.0
[INFO] tweaked toml for crates.io crate cfg 0.5.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", 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] b7fdfdabc35ec6a8ffe35be4f0029d5f8781dae7b27ecea0bf827a66f59b5ca9
[INFO] running `Command { std: "docker" "start" "-a" "b7fdfdabc35ec6a8ffe35be4f0029d5f8781dae7b27ecea0bf827a66f59b5ca9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b7fdfdabc35ec6a8ffe35be4f0029d5f8781dae7b27ecea0bf827a66f59b5ca9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7fdfdabc35ec6a8ffe35be4f0029d5f8781dae7b27ecea0bf827a66f59b5ca9", kill_on_drop: false }`
[INFO] [stdout] b7fdfdabc35ec6a8ffe35be4f0029d5f8781dae7b27ecea0bf827a66f59b5ca9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "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] d31d76d2b265c3b14d9fe69b65476fc7a09f645e393521388c6edf815a67e368
[INFO] running `Command { std: "docker" "start" "-a" "d31d76d2b265c3b14d9fe69b65476fc7a09f645e393521388c6edf815a67e368", kill_on_drop: false }`
[INFO] [stderr]     Checking optional v0.5.0
[INFO] [stderr]     Checking bit-matrix v0.6.0
[INFO] [stderr]  Documenting cfg v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/symbol/source.rs:48:34
[INFO] [stdout]     |
[INFO] [stdout] 48  |           impl SymbolContainer for ( Symbol $(, $T)* ) {
[INFO] [stdout]     |                                    ^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] ...
[INFO] [stdout] 60  | / impl_generate!(
[INFO] [stdout] 61  | |     Symbol, next_sym, Symbol, next_sym, Symbol, next_sym, Symbol, next_sym,
[INFO] [stdout] 62  | |     Symbol, next_sym, Symbol, next_sym, Symbol, next_sym, Symbol, next_sym,
[INFO] [stdout] 63  | |     Symbol, next_sym, Symbol, next_sym, Symbol, next_sym, Symbol, next_sym,
[INFO] [stdout] ...   |
[INFO] [stdout] 106 | |     Symbol, next_sym, Symbol, next_sym, Symbol, next_sym, Symbol, next_sym,
[INFO] [stdout] 107 | | );
[INFO] [stdout]     | |__- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `impl_generate` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.78s
[INFO] running `Command { std: "docker" "inspect" "d31d76d2b265c3b14d9fe69b65476fc7a09f645e393521388c6edf815a67e368", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d31d76d2b265c3b14d9fe69b65476fc7a09f645e393521388c6edf815a67e368", kill_on_drop: false }`
[INFO] [stdout] d31d76d2b265c3b14d9fe69b65476fc7a09f645e393521388c6edf815a67e368
