[INFO] fetching crate feed-browser 0.1.2...
[INFO] documenting feed-browser-0.1.2 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate feed-browser 0.1.2 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate feed-browser 0.1.2 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 feed-browser 0.1.2
[INFO] finished tweaking crates.io crate feed-browser 0.1.2
[INFO] tweaked toml for crates.io crate feed-browser 0.1.2 written to /workspace/builds/worker-2/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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded webbrowser v0.3.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 39387e77adef7d3a54dccd686b8e1b8bac142be5b74b3ea1716a7f00df322867
[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" "39387e77adef7d3a54dccd686b8e1b8bac142be5b74b3ea1716a7f00df322867", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "39387e77adef7d3a54dccd686b8e1b8bac142be5b74b3ea1716a7f00df322867", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39387e77adef7d3a54dccd686b8e1b8bac142be5b74b3ea1716a7f00df322867", kill_on_drop: false }`
[INFO] [stdout] 39387e77adef7d3a54dccd686b8e1b8bac142be5b74b3ea1716a7f00df322867
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] [stdout] f5b2dfe9c8967c912408e4e5483c594601a89fbc93f986d72347bcb257a3a4f6
[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" "f5b2dfe9c8967c912408e4e5483c594601a89fbc93f986d72347bcb257a3a4f6", kill_on_drop: false }`
[INFO] [stderr]    Compiling derive_builder v0.9.0
[INFO] [stderr]     Checking webbrowser v0.3.1
[INFO] [stderr]     Checking quick-xml v0.17.2
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling darling v0.10.2
[INFO] [stderr]     Checking serde v1.0.115
[INFO] [stderr]     Checking rayon v1.4.0
[INFO] [stderr]    Compiling derive_builder_core v0.9.0
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking serde_json v1.0.57
[INFO] [stderr]     Checking serde_urlencoded v0.5.5
[INFO] [stderr]     Checking cookie_store v0.7.0
[INFO] [stderr]     Checking reqwest v0.9.24
[INFO] [stderr]     Checking rss v1.9.0
[INFO] [stderr]  Documenting feed-browser v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 26.08s
[INFO] running `Command { std: "docker" "inspect" "f5b2dfe9c8967c912408e4e5483c594601a89fbc93f986d72347bcb257a3a4f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5b2dfe9c8967c912408e4e5483c594601a89fbc93f986d72347bcb257a3a4f6", kill_on_drop: false }`
[INFO] [stdout] f5b2dfe9c8967c912408e4e5483c594601a89fbc93f986d72347bcb257a3a4f6