[INFO] cloning repository https://github.com/daose/box2epub
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/daose/box2epub" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdaose%2Fbox2epub", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdaose%2Fbox2epub'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e537e08c714b41e1d6ae597aea169e82545a6d50
[INFO] documenting daose/box2epub against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdaose%2Fbox2epub" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/daose/box2epub 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 git repo https://github.com/daose/box2epub
[INFO] finished tweaking git repo https://github.com/daose/box2epub
[INFO] tweaked toml for git repo https://github.com/daose/box2epub written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/daose/box2epub already has a lockfile, it will not be regenerated
[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 hyper v0.13.6
[INFO] [stderr]   Downloaded indexmap v1.4.0
[INFO] [stderr]   Downloaded error-chain v0.12.2
[INFO] [stderr]   Downloaded addr2line v0.13.0
[INFO] [stderr]   Downloaded wasm-bindgen-macro-support v0.2.64
[INFO] [stderr]   Downloaded xml5ever v0.16.1
[INFO] [stderr]   Downloaded generator v0.6.21
[INFO] [stderr]   Downloaded servo_arc v0.1.1
[INFO] [stderr]   Downloaded miniz_oxide v0.4.0
[INFO] [stderr]   Downloaded siphasher v0.3.3
[INFO] [stderr]   Downloaded adler v0.2.2
[INFO] [stderr]   Downloaded wasm-bindgen-backend v0.2.64
[INFO] [stderr]   Downloaded bzip2-sys v0.1.9+1.0.8
[INFO] [stderr]   Downloaded zip v0.5.6
[INFO] [stderr]   Downloaded podio v0.1.7
[INFO] [stderr]   Downloaded backtrace v0.3.50
[INFO] [stderr]   Downloaded serde_derive v1.0.114
[INFO] [stderr]   Downloaded wasm-bindgen-futures v0.4.14
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.64
[INFO] [stderr]   Downloaded getopts v0.2.21
[INFO] [stderr]   Downloaded mustache v0.9.0
[INFO] [stderr]   Downloaded ego-tree v0.6.2
[INFO] [stderr]   Downloaded flate2 v1.0.16
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.64
[INFO] [stderr]   Downloaded string_cache v0.8.0
[INFO] [stderr]   Downloaded phf_macros v0.8.0
[INFO] [stderr]   Downloaded js-sys v0.3.41
[INFO] [stderr]   Downloaded derive_more v0.99.9
[INFO] [stderr]   Downloaded serde_json v1.0.56
[INFO] [stderr]   Downloaded gimli v0.22.0
[INFO] [stderr]   Downloaded web-sys v0.3.41
[INFO] [stderr]   Downloaded epub-builder v0.4.7
[INFO] [stderr]   Downloaded string_cache_codegen v0.5.1
[INFO] [stderr]   Downloaded syn v1.0.33
[INFO] [stderr]   Downloaded cssparser-macros v0.6.0
[INFO] [stderr]   Downloaded dtoa-short v0.3.2
[INFO] [stderr]   Downloaded scraper v0.12.0
[INFO] [stderr]   Downloaded markup5ever v0.10.0
[INFO] [stderr]   Downloaded html5ever v0.25.1
[INFO] [stderr]   Downloaded smallvec v1.4.1
[INFO] [stderr]   Downloaded phf v0.8.0
[INFO] [stderr]   Downloaded rand_pcg v0.2.1
[INFO] [stderr]   Downloaded phf_generator v0.8.0
[INFO] [stderr]   Downloaded phf_codegen v0.8.0
[INFO] [stderr]   Downloaded thin-slice v0.1.1
[INFO] [stderr]   Downloaded loom v0.3.4
[INFO] [stderr]   Downloaded reqwest v0.10.6
[INFO] [stderr]   Downloaded fxhash v0.2.1
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.64
[INFO] [stderr]   Downloaded html2text v0.1.12
[INFO] [stderr]   Downloaded cssparser v0.27.2
[INFO] [stderr]   Downloaded phf_shared v0.8.0
[INFO] [stderr]   Downloaded bytes v0.5.5
[INFO] [stderr]   Downloaded markup5ever_rcdom v0.1.0
[INFO] [stderr]   Downloaded selectors v0.22.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3bdbe57be33f8f355c6c4fa07409baf2a20462161560f0c835d1e0e0c2446c68
[INFO] running `Command { std: "docker" "start" "-a" "3bdbe57be33f8f355c6c4fa07409baf2a20462161560f0c835d1e0e0c2446c68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3bdbe57be33f8f355c6c4fa07409baf2a20462161560f0c835d1e0e0c2446c68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3bdbe57be33f8f355c6c4fa07409baf2a20462161560f0c835d1e0e0c2446c68", kill_on_drop: false }`
[INFO] [stdout] 3bdbe57be33f8f355c6c4fa07409baf2a20462161560f0c835d1e0e0c2446c68
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e00d5e04b6a32295efce0517304851b9a0ac34e07504a51539a62386087e52cf
[INFO] running `Command { std: "docker" "start" "-a" "e00d5e04b6a32295efce0517304851b9a0ac34e07504a51539a62386087e52cf", kill_on_drop: false }`
[INFO] [stderr]    Compiling bzip2-sys v0.1.9+1.0.8
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking mustache v0.9.0
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]     Checking error-chain v0.12.2
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]     Checking openssl v0.10.30
[INFO] [stderr]     Checking flate2 v1.0.16
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking bzip2 v0.3.3
[INFO] [stderr]     Checking zip v0.5.6
[INFO] [stderr]     Checking uuid v0.8.1
[INFO] [stderr]    Compiling phf_generator v0.8.0
[INFO] [stderr]     Checking tokio v0.2.21
[INFO] [stderr]    Compiling phf_codegen v0.8.0
[INFO] [stderr]    Compiling string_cache_codegen v0.5.1
[INFO] [stderr]    Compiling phf_macros v0.8.0
[INFO] [stderr]    Compiling selectors v0.22.0
[INFO] [stderr]    Compiling markup5ever v0.10.0
[INFO] [stderr]     Checking native-tls v0.2.4
[INFO] [stderr]     Checking phf v0.8.0
[INFO] [stderr]     Checking cssparser v0.27.2
[INFO] [stderr]     Checking futures-executor v0.3.5
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking tokio-tls v0.3.1
[INFO] [stderr]     Checking futures v0.3.5
[INFO] [stderr]     Checking html5ever v0.25.1
[INFO] [stderr]     Checking xml5ever v0.16.1
[INFO] [stderr]     Checking h2 v0.2.5
[INFO] [stderr]     Checking markup5ever_rcdom v0.1.0
[INFO] [stderr]     Checking html2text v0.1.12
[INFO] [stderr]     Checking scraper v0.12.0
[INFO] [stderr]     Checking epub-builder v0.4.7
[INFO] [stderr]     Checking hyper v0.13.6
[INFO] [stderr]     Checking hyper-tls v0.4.3
[INFO] [stderr]     Checking reqwest v0.10.6
[INFO] [stderr]  Documenting box2epub v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 57.08s
[INFO] running `Command { std: "docker" "inspect" "e00d5e04b6a32295efce0517304851b9a0ac34e07504a51539a62386087e52cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e00d5e04b6a32295efce0517304851b9a0ac34e07504a51539a62386087e52cf", kill_on_drop: false }`
[INFO] [stdout] e00d5e04b6a32295efce0517304851b9a0ac34e07504a51539a62386087e52cf