[INFO] cloning repository https://github.com/jpastuszek/denim
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jpastuszek/denim" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjpastuszek%2Fdenim", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjpastuszek%2Fdenim'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d659ce961d4f610a3baab0878f928a78e8b0cba5
[INFO] documenting jpastuszek/denim 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%2Fjpastuszek%2Fdenim" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jpastuszek/denim 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/jpastuszek/denim
[INFO] finished tweaking git repo https://github.com/jpastuszek/denim
[INFO] tweaked toml for git repo https://github.com/jpastuszek/denim written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/jpastuszek/denim 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 duct v0.13.2
[INFO] [stderr]   Downloaded cotton v0.0.7
[INFO] [stderr]   Downloaded problem v5.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] a614d4d5c3e2cde3bd249d58d26ad205788deea2817aa7f6492ebaedd6778ba1
[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" "a614d4d5c3e2cde3bd249d58d26ad205788deea2817aa7f6492ebaedd6778ba1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a614d4d5c3e2cde3bd249d58d26ad205788deea2817aa7f6492ebaedd6778ba1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a614d4d5c3e2cde3bd249d58d26ad205788deea2817aa7f6492ebaedd6778ba1", kill_on_drop: false }`
[INFO] [stdout] a614d4d5c3e2cde3bd249d58d26ad205788deea2817aa7f6492ebaedd6778ba1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 32758d9ae2199594941ff417a990dd35c65c00d9e75898f1a42375557a8efb32
[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" "32758d9ae2199594941ff417a990dd35c65c00d9e75898f1a42375557a8efb32", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]     Checking once_cell v1.2.0
[INFO] [stderr]     Checking assert_matches v1.3.0
[INFO] [stderr]     Checking tap v0.3.1
[INFO] [stderr]     Checking boolinator v2.4.0
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]     Checking itertools v0.8.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]     Checking app_dirs v1.2.1
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking errno v0.2.4
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking shared_child v0.3.4
[INFO] [stderr]     Checking os_pipe v0.9.1
[INFO] [stderr]     Checking serde_json v1.0.41
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking duct v0.13.2
[INFO] [stderr]     Checking exec v0.3.1
[INFO] [stderr]     Checking shaman v0.1.0
[INFO] [stderr]     Checking backtrace v0.3.40
[INFO] [stderr]     Checking problem v5.2.1
[INFO] [stderr]     Checking chrono v0.4.9
[INFO] [stderr]    Compiling proc-macro-error v0.2.6
[INFO] [stderr]    Compiling structopt-derive v0.3.3
[INFO] [stderr]     Checking structopt v0.3.3
[INFO] [stderr]     Checking cotton v0.0.7
[INFO] [stderr]  Documenting denim v0.1.4-alpha.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 32.89s
[INFO] running `Command { std: "docker" "inspect" "32758d9ae2199594941ff417a990dd35c65c00d9e75898f1a42375557a8efb32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "32758d9ae2199594941ff417a990dd35c65c00d9e75898f1a42375557a8efb32", kill_on_drop: false }`
[INFO] [stdout] 32758d9ae2199594941ff417a990dd35c65c00d9e75898f1a42375557a8efb32