[INFO] fetching crate aci_png 0.8.0-pre0...
[INFO] documenting aci_png-0.8.0-pre0 against beta-2020-10-09 for beta-1.48-rustdoc-1
[INFO] extracting crate aci_png 0.8.0-pre0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate aci_png 0.8.0-pre0 on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate aci_png 0.8.0-pre0
[INFO] finished tweaking crates.io crate aci_png 0.8.0-pre0
[INFO] tweaked toml for crates.io crate aci_png 0.8.0-pre0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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-2020-10-09" "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] 2df89c9b51f32dfe0859c7e34a85ee73fc564ab95b78b5b4d3c9eb23d8d4a291
[INFO] running `Command { std: "docker" "start" "-a" "2df89c9b51f32dfe0859c7e34a85ee73fc564ab95b78b5b4d3c9eb23d8d4a291", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2df89c9b51f32dfe0859c7e34a85ee73fc564ab95b78b5b4d3c9eb23d8d4a291", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2df89c9b51f32dfe0859c7e34a85ee73fc564ab95b78b5b4d3c9eb23d8d4a291", kill_on_drop: false }`
[INFO] [stdout] 2df89c9b51f32dfe0859c7e34a85ee73fc564ab95b78b5b4d3c9eb23d8d4a291
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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-2020-10-09" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d7d0f5241f60864a22bf7fccec56cf3941a8f22d767df2b853578a73f6807daa
[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" "d7d0f5241f60864a22bf7fccec56cf3941a8f22d767df2b853578a73f6807daa", kill_on_drop: false }`
[INFO] [stderr]     Checking afi v0.8.0-pre0
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]  Documenting aci_png v0.8.0-pre0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/png.rs:665:12
[INFO] [stdout]     |
[INFO] [stdout] 665 |     -> Result<(Vec<u8>), Error>
[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 3.26s
[INFO] running `Command { std: "docker" "inspect" "d7d0f5241f60864a22bf7fccec56cf3941a8f22d767df2b853578a73f6807daa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7d0f5241f60864a22bf7fccec56cf3941a8f22d767df2b853578a73f6807daa", kill_on_drop: false }`
[INFO] [stdout] d7d0f5241f60864a22bf7fccec56cf3941a8f22d767df2b853578a73f6807daa
