[INFO] cloning repository https://github.com/tekjar/rumqttd
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tekjar/rumqttd" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftekjar%2Frumqttd", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftekjar%2Frumqttd'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 741ba2fe63776fc0b29985ab295afc84724f483b
[INFO] documenting tekjar/rumqttd 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%2Ftekjar%2Frumqttd" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tekjar/rumqttd 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/tekjar/rumqttd
[INFO] finished tweaking git repo https://github.com/tekjar/rumqttd
[INFO] tweaked toml for git repo https://github.com/tekjar/rumqttd written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/tekjar/rumqttd 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]     Updating git repository `https://github.com/tekjar/mqtt3`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded structopt v0.0.5
[INFO] [stderr]   Downloaded structopt-derive v0.0.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 40448eb593969c8301692dfbb563ae9fd792d54518154204ccc72e31d5fc8da2
[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" "40448eb593969c8301692dfbb563ae9fd792d54518154204ccc72e31d5fc8da2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "40448eb593969c8301692dfbb563ae9fd792d54518154204ccc72e31d5fc8da2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40448eb593969c8301692dfbb563ae9fd792d54518154204ccc72e31d5fc8da2", kill_on_drop: false }`
[INFO] [stdout] 40448eb593969c8301692dfbb563ae9fd792d54518154204ccc72e31d5fc8da2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] e94d30b88c8348443cea65827fab84a9a30c5984ee1f885addc31912844fd6f7
[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" "e94d30b88c8348443cea65827fab84a9a30c5984ee1f885addc31912844fd6f7", 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] [stderr]     Checking libc v0.2.27
[INFO] [stderr]     Checking futures v0.1.14
[INFO] [stderr]     Checking unicode-segmentation v1.1.0
[INFO] [stderr]     Checking lazycell v0.4.0
[INFO] [stderr]     Checking serde v1.0.10
[INFO] [stderr]     Checking term v0.4.6
[INFO] [stderr]     Checking quick-error v1.2.0
[INFO] [stderr]     Checking mqtt3 v0.1.4 (https://github.com/tekjar/mqtt3#f1a4675d)
[INFO] [stderr]    Compiling serde_derive_internals v0.15.1
[INFO] [stderr]    Compiling structopt-derive v0.0.5
[INFO] [stderr]     Checking iovec v0.1.0
[INFO] [stderr]     Checking term_size v0.3.0
[INFO] [stderr]     Checking atty v0.2.2
[INFO] [stderr]     Checking net2 v0.2.30
[INFO] [stderr]     Checking time v0.1.38
[INFO] [stderr]     Checking rand v0.3.15
[INFO] [stderr]     Checking textwrap v0.6.0
[INFO] [stderr]    Compiling serde_derive v1.0.10
[INFO] [stderr]     Checking bytes v0.4.4
[INFO] [stderr]     Checking clap v2.25.1
[INFO] [stderr]     Checking mio v0.6.9
[INFO] [stderr]     Checking simplelog v0.4.2
[INFO] [stderr]     Checking chrono v0.4.0
[INFO] [stderr]     Checking tokio-io v0.1.2
[INFO] [stderr]     Checking tokio-timer v0.1.2
[INFO] [stderr]     Checking tokio-core v0.1.8
[INFO] [stderr]     Checking toml v0.4.2
[INFO] [stderr]     Checking structopt v0.0.5
[INFO] [stderr]  Documenting rumqttd v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.75s
[INFO] running `Command { std: "docker" "inspect" "e94d30b88c8348443cea65827fab84a9a30c5984ee1f885addc31912844fd6f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e94d30b88c8348443cea65827fab84a9a30c5984ee1f885addc31912844fd6f7", kill_on_drop: false }`
[INFO] [stdout] e94d30b88c8348443cea65827fab84a9a30c5984ee1f885addc31912844fd6f7