[INFO] cloning repository https://github.com/pfernie/synacor-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pfernie/synacor-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpfernie%2Fsynacor-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpfernie%2Fsynacor-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5c2677d8145793b1085adcae0aa1b1cb73bef1dc
[INFO] documenting pfernie/synacor-rs against 1.46.0 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpfernie%2Fsynacor-rs" "/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/pfernie/synacor-rs on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/pfernie/synacor-rs
[INFO] finished tweaking git repo https://github.com/pfernie/synacor-rs
[INFO] tweaked toml for git repo https://github.com/pfernie/synacor-rs written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/pfernie/synacor-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6d19a9f03c5bce8155cf9338c770138231303a69f3c175ed0f2a8c41d725663e
[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" "6d19a9f03c5bce8155cf9338c770138231303a69f3c175ed0f2a8c41d725663e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6d19a9f03c5bce8155cf9338c770138231303a69f3c175ed0f2a8c41d725663e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d19a9f03c5bce8155cf9338c770138231303a69f3c175ed0f2a8c41d725663e", kill_on_drop: false }`
[INFO] [stdout] 6d19a9f03c5bce8155cf9338c770138231303a69f3c175ed0f2a8c41d725663e
[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" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 378af099ca4d3947134f31cf92334d0f6b0b8032ecacec1064fe075969e4ad10
[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" "378af099ca4d3947134f31cf92334d0f6b0b8032ecacec1064fe075969e4ad10", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.18
[INFO] [stderr]    Compiling gcc v0.3.41
[INFO] [stderr]    Compiling backtrace v0.3.0
[INFO] [stderr]     Checking cfg-if v0.1.0
[INFO] [stderr]     Checking rustc-demangle v0.1.3
[INFO] [stderr]     Checking regex-syntax v0.4.0
[INFO] [stderr]     Checking unicode-segmentation v1.0.1
[INFO] [stderr]     Checking log v0.3.6
[INFO] [stderr]     Checking try_from v0.2.1
[INFO] [stderr]     Checking byteorder v1.0.0
[INFO] [stderr]     Checking unreachable v0.1.1
[INFO] [stderr]     Checking thread-id v3.0.0
[INFO] [stderr]     Checking memchr v1.0.1
[INFO] [stderr]     Checking term_size v0.2.1
[INFO] [stderr]     Checking thread_local v0.3.2
[INFO] [stderr]     Checking clap v2.20.0
[INFO] [stderr]     Checking aho-corasick v0.6.1
[INFO] [stderr]    Compiling backtrace-sys v0.1.5
[INFO] [stderr]     Checking regex v0.2.1
[INFO] [stderr]     Checking error-chain v0.7.2
[INFO] [stderr]     Checking env_logger v0.4.0
[INFO] [stderr]  Documenting synacor v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.15s
[INFO] running `Command { std: "docker" "inspect" "378af099ca4d3947134f31cf92334d0f6b0b8032ecacec1064fe075969e4ad10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "378af099ca4d3947134f31cf92334d0f6b0b8032ecacec1064fe075969e4ad10", kill_on_drop: false }`
[INFO] [stdout] 378af099ca4d3947134f31cf92334d0f6b0b8032ecacec1064fe075969e4ad10