[INFO] fetching crate ref-mut-n 1.0.1...
[INFO] documenting ref-mut-n-1.0.1 against nightly for scrape-examples
[INFO] extracting crate ref-mut-n 1.0.1 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate ref-mut-n 1.0.1 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 ref-mut-n 1.0.1
[INFO] finished tweaking crates.io crate ref-mut-n 1.0.1
[INFO] tweaked toml for crates.io crate ref-mut-n 1.0.1 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate ref-mut-n 1.0.1 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 9ac62c78606792c54cbef144a385cc008fdc947f6aef09ec713c6856d454f1ad
[INFO] running `Command { std: "docker" "start" "-a" "9ac62c78606792c54cbef144a385cc008fdc947f6aef09ec713c6856d454f1ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9ac62c78606792c54cbef144a385cc008fdc947f6aef09ec713c6856d454f1ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ac62c78606792c54cbef144a385cc008fdc947f6aef09ec713c6856d454f1ad", kill_on_drop: false }`
[INFO] [stdout] 9ac62c78606792c54cbef144a385cc008fdc947f6aef09ec713c6856d454f1ad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 3fe7ddaa8361a5726ec1ef33c0d5e6613a2311a268c5dbb1f69433bc650e1541
[INFO] running `Command { std: "docker" "start" "-a" "3fe7ddaa8361a5726ec1ef33c0d5e6613a2311a268c5dbb1f69433bc650e1541", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]     Checking unicode-xid v0.2.2
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling syn v1.0.89
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking quote v1.0.16
[INFO] [stderr]  Documenting ref-mut-n v1.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.09s
[INFO] running `Command { std: "docker" "inspect" "3fe7ddaa8361a5726ec1ef33c0d5e6613a2311a268c5dbb1f69433bc650e1541", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3fe7ddaa8361a5726ec1ef33c0d5e6613a2311a268c5dbb1f69433bc650e1541", kill_on_drop: false }`
[INFO] [stdout] 3fe7ddaa8361a5726ec1ef33c0d5e6613a2311a268c5dbb1f69433bc650e1541
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] c9347ce827c3004e87fe8767630fe9371f1ddd1eb811bd527f045581a9e299c0
[INFO] running `Command { std: "docker" "start" "-a" "c9347ce827c3004e87fe8767630fe9371f1ddd1eb811bd527f045581a9e299c0", kill_on_drop: false }`
[INFO] [stderr]  Documenting ref-mut-n v1.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `Command { std: "docker" "inspect" "c9347ce827c3004e87fe8767630fe9371f1ddd1eb811bd527f045581a9e299c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9347ce827c3004e87fe8767630fe9371f1ddd1eb811bd527f045581a9e299c0", kill_on_drop: false }`
[INFO] [stdout] c9347ce827c3004e87fe8767630fe9371f1ddd1eb811bd527f045581a9e299c0