[INFO] cloning repository https://github.com/Nercury/twig-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Nercury/twig-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNercury%2Ftwig-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNercury%2Ftwig-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 810c6df0ed0d32d7312b5fa92186d62378906ab1
[INFO] documenting Nercury/twig-rs against 1.75.0 for beta-1.76-rustdoc-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNercury%2Ftwig-rs" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Nercury/twig-rs on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Nercury/twig-rs
[INFO] finished tweaking git repo https://github.com/Nercury/twig-rs
[INFO] tweaked toml for git repo https://github.com/Nercury/twig-rs written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Nercury/twig-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded num-traits v0.1.40
[INFO] [stderr]   Downloaded sha1 v0.1.1
[INFO] [stderr]   Downloaded conv v0.3.3
[INFO] [stderr]   Downloaded thread_local v0.2.7
[INFO] [stderr]   Downloaded uuid v0.1.18
[INFO] [stderr]   Downloaded unreachable v1.0.0
[INFO] [stderr]   Downloaded void v1.0.2
[INFO] [stderr]   Downloaded dtoa v0.4.2
[INFO] [stderr]   Downloaded magenta-sys v0.1.1
[INFO] [stderr]   Downloaded thread-id v2.0.0
[INFO] [stderr]   Downloaded memchr v1.0.1
[INFO] [stderr]   Downloaded memchr v0.1.11
[INFO] [stderr]   Downloaded thread_local v0.3.4
[INFO] [stderr]   Downloaded log v0.3.3
[INFO] [stderr]   Downloaded magenta v0.1.1
[INFO] [stderr]   Downloaded serde v1.0.15
[INFO] [stderr]   Downloaded regex-syntax v0.4.1
[INFO] [stderr]   Downloaded regex v0.1.80
[INFO] [stderr]   Downloaded regex-syntax v0.3.9
[INFO] [stderr]   Downloaded regex v0.2.2
[INFO] [stderr]   Downloaded winapi v0.2.5
[INFO] [stderr]   Downloaded libc v0.2.31
[INFO] [stderr]   Downloaded aho-corasick v0.5.3
[INFO] [stderr]   Downloaded rand v0.3.16
[INFO] [stderr]   Downloaded serde_json v1.0.3
[INFO] [stderr]   Downloaded difference v0.4.1
[INFO] [stderr]   Downloaded getopts v0.2.14
[INFO] [stderr]   Downloaded utf8-ranges v0.1.3
[INFO] [stderr]   Downloaded kernel32-sys v0.2.1
[INFO] [stderr]   Downloaded custom_derive v0.1.7
[INFO] [stderr]   Downloaded itoa v0.3.4
[INFO] [stderr]   Downloaded lazy_static v0.2.9
[INFO] [stderr]   Downloaded aho-corasick v0.6.3
[INFO] [stderr]   Downloaded libc v0.1.12
[INFO] [stderr]   Downloaded utf8-ranges v1.0.0
[INFO] [stderr]   Downloaded byteorder v0.4.2
[INFO] [stderr]   Downloaded little v0.3.0
[INFO] [stderr]   Downloaded term v0.2.13
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3503f328c7704d9c3058aae0d27e1848e58af04cae4fadb4c1300c346135f08f
[INFO] running `Command { std: "docker" "start" "-a" "3503f328c7704d9c3058aae0d27e1848e58af04cae4fadb4c1300c346135f08f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3503f328c7704d9c3058aae0d27e1848e58af04cae4fadb4c1300c346135f08f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3503f328c7704d9c3058aae0d27e1848e58af04cae4fadb4c1300c346135f08f", kill_on_drop: false }`
[INFO] [stdout] 3503f328c7704d9c3058aae0d27e1848e58af04cae4fadb4c1300c346135f08f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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=warn" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 598f9b5ff8854ec5dc04dd2a5065cfff89ec1d580ddc17d4afec17d53387bd64
[INFO] running `Command { std: "docker" "start" "-a" "598f9b5ff8854ec5dc04dd2a5065cfff89ec1d580ddc17d4afec17d53387bd64", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.31
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]     Checking winapi v0.2.5
[INFO] [stderr]     Checking byteorder v0.4.2
[INFO] [stderr]     Checking libc v0.1.12
[INFO] [stderr]     Checking regex-syntax v0.3.9
[INFO] [stderr]     Checking utf8-ranges v0.1.3
[INFO] [stderr]    Compiling kernel32-sys v0.2.1
[INFO] [stderr]     Checking log v0.3.3
[INFO] [stderr]     Checking sha1 v0.1.1
[INFO] [stderr]     Checking little v0.3.0
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]     Checking rand v0.3.16
[INFO] [stderr]     Checking thread_local v0.2.7
[INFO] [stderr]     Checking aho-corasick v0.5.3
[INFO] [stderr]     Checking regex v0.1.80
[INFO] [stderr]     Checking uuid v0.1.18
[INFO] [stderr]  Documenting twig v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.86s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.24
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] [stderr]    Generated /opt/rustwide/target/doc/twig/index.html
[INFO] running `Command { std: "docker" "inspect" "598f9b5ff8854ec5dc04dd2a5065cfff89ec1d580ddc17d4afec17d53387bd64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "598f9b5ff8854ec5dc04dd2a5065cfff89ec1d580ddc17d4afec17d53387bd64", kill_on_drop: false }`
[INFO] [stdout] 598f9b5ff8854ec5dc04dd2a5065cfff89ec1d580ddc17d4afec17d53387bd64
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "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] 0f10e246fc05c1898db8666e90b11a975bc778f4cc3137dc21176aa892c9fea2
[INFO] running `Command { std: "docker" "start" "-a" "0f10e246fc05c1898db8666e90b11a975bc778f4cc3137dc21176aa892c9fea2", kill_on_drop: false }`
[INFO] [stderr]  Documenting twig v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.93s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.24
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] [stderr]    Generated /opt/rustwide/target/doc/twig/index.html
[INFO] running `Command { std: "docker" "inspect" "0f10e246fc05c1898db8666e90b11a975bc778f4cc3137dc21176aa892c9fea2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f10e246fc05c1898db8666e90b11a975bc778f4cc3137dc21176aa892c9fea2", kill_on_drop: false }`
[INFO] [stdout] 0f10e246fc05c1898db8666e90b11a975bc778f4cc3137dc21176aa892c9fea2