[INFO] cloning repository https://github.com/vmikhaliuk/alx
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vmikhaliuk/alx" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvmikhaliuk%2Falx", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvmikhaliuk%2Falx'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b951c0da1f1129f95e7ae5192a93e1372c8c3449
[INFO] documenting vmikhaliuk/alx 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%2Fvmikhaliuk%2Falx" "/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/vmikhaliuk/alx 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/vmikhaliuk/alx
[INFO] finished tweaking git repo https://github.com/vmikhaliuk/alx
[INFO] tweaked toml for git repo https://github.com/vmikhaliuk/alx written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/vmikhaliuk/alx 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]     Blocking waiting for file lock on package cache
[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] 9e7af0050ecd89bf6225b61ad6adc80e3ea0252eadaccb06817081fa9326bc8f
[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" "9e7af0050ecd89bf6225b61ad6adc80e3ea0252eadaccb06817081fa9326bc8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9e7af0050ecd89bf6225b61ad6adc80e3ea0252eadaccb06817081fa9326bc8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e7af0050ecd89bf6225b61ad6adc80e3ea0252eadaccb06817081fa9326bc8f", kill_on_drop: false }`
[INFO] [stdout] 9e7af0050ecd89bf6225b61ad6adc80e3ea0252eadaccb06817081fa9326bc8f
[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] 06accc306cdae48df4a10cfe51c4b396762b8e071772f0ec3c2b9441d4adef7a
[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" "06accc306cdae48df4a10cfe51c4b396762b8e071772f0ec3c2b9441d4adef7a", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v0.15.42
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]     Checking ucd-util v0.1.5
[INFO] [stderr]     Checking encode_unicode v0.3.5
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking backtrace v0.3.33
[INFO] [stderr]     Checking tokio-threadpool v0.1.15
[INFO] [stderr]     Checking tokio-reactor v0.1.9
[INFO] [stderr]     Checking regex-syntax v0.6.10
[INFO] [stderr]     Checking term v0.5.2
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking error-chain v0.12.1
[INFO] [stderr]     Checking aho-corasick v0.7.4
[INFO] [stderr]     Checking csv-core v0.1.6
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking hyper v0.12.33
[INFO] [stderr]     Checking regex v1.2.0
[INFO] [stderr]     Checking hyper-tls v0.3.2
[INFO] [stderr]     Checking publicsuffix v1.5.2
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]    Compiling serde_derive v1.0.98
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling html5ever v0.23.0
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking serde v1.0.98
[INFO] [stderr]     Checking string_cache v0.7.3
[INFO] [stderr]     Checking bstr v0.2.6
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]     Checking serde_urlencoded v0.5.5
[INFO] [stderr]     Checking chrono v0.4.7
[INFO] [stderr]     Checking csv v1.1.1
[INFO] [stderr]     Checking cookie_store v0.7.0
[INFO] [stderr]     Checking prettytable-rs v0.8.0
[INFO] [stderr]    Compiling markup5ever v0.8.1
[INFO] [stderr]     Checking reqwest v0.9.19
[INFO] [stderr]     Checking select v0.4.3
[INFO] [stderr]  Documenting alx v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 25s
[INFO] running `Command { std: "docker" "inspect" "06accc306cdae48df4a10cfe51c4b396762b8e071772f0ec3c2b9441d4adef7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06accc306cdae48df4a10cfe51c4b396762b8e071772f0ec3c2b9441d4adef7a", kill_on_drop: false }`
[INFO] [stdout] 06accc306cdae48df4a10cfe51c4b396762b8e071772f0ec3c2b9441d4adef7a