[INFO] fetching crate compound-error 0.1.4...
[INFO] documenting compound-error-0.1.4 against nightly for scrape-examples
[INFO] extracting crate compound-error 0.1.4 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate compound-error 0.1.4 on toolchain nightly
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+nightly" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate compound-error 0.1.4
[INFO] finished tweaking crates.io crate compound-error 0.1.4
[INFO] tweaked toml for crates.io crate compound-error 0.1.4 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate compound-error 0.1.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+nightly" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded proc-macro2 v1.0.9
[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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 27d9baa57e95e31b475c5238b6e2d41d9de671ebafbb3496becc2bbe8e50c703
[INFO] running `Command { std: "docker" "start" "-a" "27d9baa57e95e31b475c5238b6e2d41d9de671ebafbb3496becc2bbe8e50c703", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "27d9baa57e95e31b475c5238b6e2d41d9de671ebafbb3496becc2bbe8e50c703", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27d9baa57e95e31b475c5238b6e2d41d9de671ebafbb3496becc2bbe8e50c703", kill_on_drop: false }`
[INFO] [stdout] 27d9baa57e95e31b475c5238b6e2d41d9de671ebafbb3496becc2bbe8e50c703
[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" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 170ee83da1ce0ec1332120ec8f7a453c0ce2c3905267dd50a01b62ee74d08e31
[INFO] running `Command { std: "docker" "start" "-a" "170ee83da1ce0ec1332120ec8f7a453c0ce2c3905267dd50a01b62ee74d08e31", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.9
[INFO] [stderr]     Checking unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]     Checking quote v1.0.3
[INFO] [stderr]  Documenting compound-error v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.88s
[INFO] running `Command { std: "docker" "inspect" "170ee83da1ce0ec1332120ec8f7a453c0ce2c3905267dd50a01b62ee74d08e31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "170ee83da1ce0ec1332120ec8f7a453c0ce2c3905267dd50a01b62ee74d08e31", kill_on_drop: false }`
[INFO] [stdout] 170ee83da1ce0ec1332120ec8f7a453c0ce2c3905267dd50a01b62ee74d08e31
[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" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "DOCS_RS=1" "-e" "RUSTC_BOOTSTRAP=1" "-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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "rustdoc" "--lib" "-Zrustdoc-map" "--all-features" "-Z" "unstable-options" "--config" "build.rustdocflags=[\"-Z\", \"unstable-options\", \"--document-private-items\"]" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 16c7dc5829a4de26911714cd39f4e26c7b3b1337fe89338b1409913d539964f4
[INFO] running `Command { std: "docker" "start" "-a" "16c7dc5829a4de26911714cd39f4e26c7b3b1337fe89338b1409913d539964f4", kill_on_drop: false }`
[INFO] [stderr]  Documenting compound-error v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.45s
[INFO] running `Command { std: "docker" "inspect" "16c7dc5829a4de26911714cd39f4e26c7b3b1337fe89338b1409913d539964f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16c7dc5829a4de26911714cd39f4e26c7b3b1337fe89338b1409913d539964f4", kill_on_drop: false }`
[INFO] [stdout] 16c7dc5829a4de26911714cd39f4e26c7b3b1337fe89338b1409913d539964f4