[INFO] fetching crate aci_png 0.8.0-pre0...
[INFO] documenting aci_png-0.8.0-pre0 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate aci_png 0.8.0-pre0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate aci_png 0.8.0-pre0 on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "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-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f79fdae4a1f4c1c39416ee89ec9d40b019f0335a4e3ebdb6bb33278d269ef89e
[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" "f79fdae4a1f4c1c39416ee89ec9d40b019f0335a4e3ebdb6bb33278d269ef89e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f79fdae4a1f4c1c39416ee89ec9d40b019f0335a4e3ebdb6bb33278d269ef89e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f79fdae4a1f4c1c39416ee89ec9d40b019f0335a4e3ebdb6bb33278d269ef89e", kill_on_drop: false }`
[INFO] [stdout] f79fdae4a1f4c1c39416ee89ec9d40b019f0335a4e3ebdb6bb33278d269ef89e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+1.46.0" "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] 957152d6f4b3ac7bd829be4981f0e3305b7c2b0560ddf1b8fcd784f743ff4210
[INFO] running `Command { std: "docker" "start" "-a" "957152d6f4b3ac7bd829be4981f0e3305b7c2b0560ddf1b8fcd784f743ff4210", kill_on_drop: false }`
[INFO] [stderr]     Checking adler32 v1.2.0
[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 3.54s
[INFO] running `Command { std: "docker" "inspect" "957152d6f4b3ac7bd829be4981f0e3305b7c2b0560ddf1b8fcd784f743ff4210", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "957152d6f4b3ac7bd829be4981f0e3305b7c2b0560ddf1b8fcd784f743ff4210", kill_on_drop: false }`
[INFO] [stdout] 957152d6f4b3ac7bd829be4981f0e3305b7c2b0560ddf1b8fcd784f743ff4210