[INFO] cloning repository https://github.com/schoenenberg/markdown-pdf-exporter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/schoenenberg/markdown-pdf-exporter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fschoenenberg%2Fmarkdown-pdf-exporter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fschoenenberg%2Fmarkdown-pdf-exporter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1a41c34e44110298cdc7a40b3682351586ede5ff
[INFO] documenting schoenenberg/markdown-pdf-exporter 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%2Fschoenenberg%2Fmarkdown-pdf-exporter" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/schoenenberg/markdown-pdf-exporter 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/schoenenberg/markdown-pdf-exporter
[INFO] finished tweaking git repo https://github.com/schoenenberg/markdown-pdf-exporter
[INFO] tweaked toml for git repo https://github.com/schoenenberg/markdown-pdf-exporter written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/schoenenberg/markdown-pdf-exporter 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded comrak v0.7.0
[INFO] [stderr]   Downloaded wkhtmltopdf v0.3.0
[INFO] [stderr]   Downloaded wkhtmltox-sys v0.1.2
[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" "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] [stdout] 3d391afc674ffbfced2640595a9971ef9ca850dcdb0c61f919eeb5b7ee6ff3ee
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "3d391afc674ffbfced2640595a9971ef9ca850dcdb0c61f919eeb5b7ee6ff3ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3d391afc674ffbfced2640595a9971ef9ca850dcdb0c61f919eeb5b7ee6ff3ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d391afc674ffbfced2640595a9971ef9ca850dcdb0c61f919eeb5b7ee6ff3ee", kill_on_drop: false }`
[INFO] [stdout] 3d391afc674ffbfced2640595a9971ef9ca850dcdb0c61f919eeb5b7ee6ff3ee
[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" "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] [stdout] 546ae5647853198058e5e9a19c877ab1416f9e0d5a663b216176c153a3960fb8
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "546ae5647853198058e5e9a19c877ab1416f9e0d5a663b216176c153a3960fb8", kill_on_drop: false }`
[INFO] [stderr]    Compiling ucd-trie v0.1.2
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]     Checking unchecked-index v0.2.2
[INFO] [stderr]     Checking entities v1.0.1
[INFO] [stderr]     Checking wkhtmltox-sys v0.1.2
[INFO] [stderr]     Checking typed-arena v1.7.0
[INFO] [stderr]     Checking unicode_categories v0.1.1
[INFO] [stderr]     Checking unicode-normalization v0.1.12
[INFO] [stderr]     Checking regex v1.3.4
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]     Checking twoway v0.2.1
[INFO] [stderr]     Checking pest v2.1.3
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]    Compiling pest_meta v2.1.3
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking wkhtmltopdf v0.3.0
[INFO] [stderr]    Compiling pest_generator v2.1.2
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]     Checking comrak v0.7.0
[INFO] [stderr]  Documenting markdown_pdf_exporter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 31.74s
[INFO] running `Command { std: "docker" "inspect" "546ae5647853198058e5e9a19c877ab1416f9e0d5a663b216176c153a3960fb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "546ae5647853198058e5e9a19c877ab1416f9e0d5a663b216176c153a3960fb8", kill_on_drop: false }`
[INFO] [stdout] 546ae5647853198058e5e9a19c877ab1416f9e0d5a663b216176c153a3960fb8