[INFO] cloning repository https://github.com/xfix/advent-of-code-2018-mirror
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/xfix/advent-of-code-2018-mirror" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxfix%2Fadvent-of-code-2018-mirror", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxfix%2Fadvent-of-code-2018-mirror'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1f9c778413d93d66d40dfc9bab850340a9d4fe8b
[INFO] documenting xfix/advent-of-code-2018-mirror 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%2Fxfix%2Fadvent-of-code-2018-mirror" "/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/xfix/advent-of-code-2018-mirror 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/xfix/advent-of-code-2018-mirror
[INFO] finished tweaking git repo https://github.com/xfix/advent-of-code-2018-mirror
[INFO] tweaked toml for git repo https://github.com/xfix/advent-of-code-2018-mirror written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/xfix/advent-of-code-2018-mirror 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 itertools v0.7.11
[INFO] [stderr]   Downloaded nom v4.1.1
[INFO] [stderr]   Downloaded z3-sys v0.4.0
[INFO] [stderr]   Downloaded heck v0.3.0
[INFO] [stderr]   Downloaded z3 v0.3.0
[INFO] [stderr]   Downloaded arraymap v0.1.1
[INFO] [stderr]   Downloaded regex-syntax v0.6.4
[INFO] [stderr]   Downloaded structopt-derive v0.2.14
[INFO] [stderr]   Downloaded structopt v0.2.14
[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] d5fc176211df7b76c6b59ebffcbab24a22a042f48fd16533e475ba7668e552c5
[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" "d5fc176211df7b76c6b59ebffcbab24a22a042f48fd16533e475ba7668e552c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d5fc176211df7b76c6b59ebffcbab24a22a042f48fd16533e475ba7668e552c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5fc176211df7b76c6b59ebffcbab24a22a042f48fd16533e475ba7668e552c5", kill_on_drop: false }`
[INFO] [stdout] d5fc176211df7b76c6b59ebffcbab24a22a042f48fd16533e475ba7668e552c5
[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] f7234384c0507dabe80459fe16132df218d0d86972b932c469ac49e1e0bffd80
[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" "f7234384c0507dabe80459fe16132df218d0d86972b932c469ac49e1e0bffd80", kill_on_drop: false }`
[INFO] [stderr]     Checking z3-sys v0.4.0
[INFO] [stderr]     Checking arraymap v0.1.1
[INFO] [stderr]     Checking crossbeam-utils v0.2.2
[INFO] [stderr]     Checking arrayvec v0.4.8
[INFO] [stderr]    Compiling heck v0.3.0
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]     Checking regex-syntax v0.6.4
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking num_cpus v1.8.0
[INFO] [stderr]     Checking memchr v2.1.2
[INFO] [stderr]    Compiling syn v0.15.22
[INFO] [stderr]     Checking num-complex v0.2.1
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking aho-corasick v0.6.9
[INFO] [stderr]     Checking nom v4.1.1
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking z3 v0.3.0
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]     Checking rayon-core v1.4.1
[INFO] [stderr]     Checking rayon v1.0.3
[INFO] [stderr]    Compiling enumset_derive v0.2.0
[INFO] [stderr]    Compiling structopt-derive v0.2.14
[INFO] [stderr]     Checking enumset v0.3.14
[INFO] [stderr]     Checking structopt v0.2.14
[INFO] [stderr]  Documenting advent-of-code-2018 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.39s
[INFO] running `Command { std: "docker" "inspect" "f7234384c0507dabe80459fe16132df218d0d86972b932c469ac49e1e0bffd80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7234384c0507dabe80459fe16132df218d0d86972b932c469ac49e1e0bffd80", kill_on_drop: false }`
[INFO] [stdout] f7234384c0507dabe80459fe16132df218d0d86972b932c469ac49e1e0bffd80