[INFO] fetching crate error-gen 0.1.0...
[INFO] documenting error-gen-0.1.0 against nightly for scrape-examples
[INFO] extracting crate error-gen 0.1.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate error-gen 0.1.0 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 error-gen 0.1.0
[INFO] finished tweaking crates.io crate error-gen 0.1.0
[INFO] tweaked toml for crates.io crate error-gen 0.1.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+nightly" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+nightly" "fetch" "--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" "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] 838dd7aaeaed12ee082e5de39ed787c58f82a4fb072ac808ce3f59896e4cd06e
[INFO] running `Command { std: "docker" "start" "-a" "838dd7aaeaed12ee082e5de39ed787c58f82a4fb072ac808ce3f59896e4cd06e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "838dd7aaeaed12ee082e5de39ed787c58f82a4fb072ac808ce3f59896e4cd06e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "838dd7aaeaed12ee082e5de39ed787c58f82a4fb072ac808ce3f59896e4cd06e", kill_on_drop: false }`
[INFO] [stdout] 838dd7aaeaed12ee082e5de39ed787c58f82a4fb072ac808ce3f59896e4cd06e
[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" "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] f3af10d12ba678c626dab46ad7d519cd9bbe8b7e8e6825bf222c83fea4776fae
[INFO] running `Command { std: "docker" "start" "-a" "f3af10d12ba678c626dab46ad7d519cd9bbe8b7e8e6825bf222c83fea4776fae", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]     Checking unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking unicode-segmentation v1.10.0
[INFO] [stderr]     Checking heck v0.3.3
[INFO] [stderr]     Checking quote v0.6.13
[INFO] [stderr]  Documenting error-gen v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.50s
[INFO] running `Command { std: "docker" "inspect" "f3af10d12ba678c626dab46ad7d519cd9bbe8b7e8e6825bf222c83fea4776fae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3af10d12ba678c626dab46ad7d519cd9bbe8b7e8e6825bf222c83fea4776fae", kill_on_drop: false }`
[INFO] [stdout] f3af10d12ba678c626dab46ad7d519cd9bbe8b7e8e6825bf222c83fea4776fae
[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" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "RUSTC_BOOTSTRAP=1" "-e" "DOCS_RS=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" "-Z" "unstable-options" "--config" "build.rustdocflags=[\"-Z\", \"unstable-options\", \"--document-private-items\"]" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 15fdbd0f389210f9b70ebf2ad4356705a1f49fb232c2b642a95139215dbd99e7
[INFO] running `Command { std: "docker" "start" "-a" "15fdbd0f389210f9b70ebf2ad4356705a1f49fb232c2b642a95139215dbd99e7", kill_on_drop: false }`
[INFO] [stderr]  Documenting error-gen v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `Command { std: "docker" "inspect" "15fdbd0f389210f9b70ebf2ad4356705a1f49fb232c2b642a95139215dbd99e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15fdbd0f389210f9b70ebf2ad4356705a1f49fb232c2b642a95139215dbd99e7", kill_on_drop: false }`
[INFO] [stdout] 15fdbd0f389210f9b70ebf2ad4356705a1f49fb232c2b642a95139215dbd99e7