[INFO] fetching crate serde_derive_state 0.4.9...
[INFO] documenting serde_derive_state-0.4.9 against beta-2020-10-09 for beta-1.48-rustdoc-1
[INFO] extracting crate serde_derive_state 0.4.9 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate serde_derive_state 0.4.9 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 serde_derive_state 0.4.9
[INFO] finished tweaking crates.io crate serde_derive_state 0.4.9
[INFO] tweaked toml for crates.io crate serde_derive_state 0.4.9 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] [stdout] 75ba51b55caf07fa009a3d18fa85c33e7b29ce663d7e9ce742e2cebc3d07f537
[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" "75ba51b55caf07fa009a3d18fa85c33e7b29ce663d7e9ce742e2cebc3d07f537", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "75ba51b55caf07fa009a3d18fa85c33e7b29ce663d7e9ce742e2cebc3d07f537", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75ba51b55caf07fa009a3d18fa85c33e7b29ce663d7e9ce742e2cebc3d07f537", kill_on_drop: false }`
[INFO] [stdout] 75ba51b55caf07fa009a3d18fa85c33e7b29ce663d7e9ce742e2cebc3d07f537
[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] 4ce286c12843ef6c1bde579957d71befedf5c557b9ae96f544a0f409734e3415
[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" "4ce286c12843ef6c1bde579957d71befedf5c557b9ae96f544a0f409734e3415", kill_on_drop: false }`
[INFO] [stderr]     Checking syn v1.0.45
[INFO] [stderr]  Documenting serde_derive_state v0.4.9 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/ser.rs:941:13
[INFO] [stdout]     |
[INFO] [stdout] 941 |             (StructTrait::SerializeStruct)
[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 6.28s
[INFO] running `Command { std: "docker" "inspect" "4ce286c12843ef6c1bde579957d71befedf5c557b9ae96f544a0f409734e3415", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ce286c12843ef6c1bde579957d71befedf5c557b9ae96f544a0f409734e3415", kill_on_drop: false }`
[INFO] [stdout] 4ce286c12843ef6c1bde579957d71befedf5c557b9ae96f544a0f409734e3415
