[INFO] cloning repository https://github.com/arzg/rschat
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/arzg/rschat" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farzg%2Frschat", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farzg%2Frschat'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 981dc81d091e9665acffd480a294c0bd7440a19f
[INFO] documenting arzg/rschat 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%2Farzg%2Frschat" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/arzg/rschat 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/arzg/rschat
[INFO] finished tweaking git repo https://github.com/arzg/rschat
[INFO] tweaked toml for git repo https://github.com/arzg/rschat written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/arzg/rschat 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]  Downloading crates ...
[INFO] [stderr]   Downloaded colored v1.9.0
[INFO] [stderr]   Downloaded pin-project-lite v0.1.0
[INFO] [stderr]   Downloaded anyhow v1.0.19
[INFO] [stderr]   Downloaded once_cell v1.2.0
[INFO] [stderr]   Downloaded async-macros v1.0.0
[INFO] [stderr]   Downloaded async-task v1.0.0
[INFO] [stderr]   Downloaded futures-timer v1.0.3
[INFO] [stderr]   Downloaded simple_logger v1.3.0
[INFO] [stderr]   Downloaded rmp-serde v0.14.0
[INFO] [stderr]   Downloaded async-std v1.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] ff4d1f75b4e4c511c086cbca0ec376af2e2a1eb31aa1277e365bda851ec56e3d
[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" "ff4d1f75b4e4c511c086cbca0ec376af2e2a1eb31aa1277e365bda851ec56e3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ff4d1f75b4e4c511c086cbca0ec376af2e2a1eb31aa1277e365bda851ec56e3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff4d1f75b4e4c511c086cbca0ec376af2e2a1eb31aa1277e365bda851ec56e3d", kill_on_drop: false }`
[INFO] [stdout] ff4d1f75b4e4c511c086cbca0ec376af2e2a1eb31aa1277e365bda851ec56e3d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 14d7c20b4de659f647438b1078c74acd8f4b392c56613c4d3f04927c66fb73bc
[INFO] running `Command { std: "docker" "start" "-a" "14d7c20b4de659f647438b1078c74acd8f4b392c56613c4d3f04927c66fb73bc", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling syn v1.0.8
[INFO] [stderr]    Compiling serde v1.0.102
[INFO] [stderr]     Checking futures-core-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling anyhow v1.0.19
[INFO] [stderr]     Checking c_linked_list v1.1.1
[INFO] [stderr]     Checking futures-core v0.3.1
[INFO] [stderr]     Checking futures-io v0.3.1
[INFO] [stderr]     Checking once_cell v1.2.0
[INFO] [stderr]     Checking pin-project-lite v0.1.0
[INFO] [stderr]    Compiling num-traits v0.2.9
[INFO] [stderr]     Checking async-task v1.0.0
[INFO] [stderr]     Checking num_cpus v1.11.1
[INFO] [stderr]     Checking colored v1.9.0
[INFO] [stderr]     Checking get_if_addrs v0.5.3
[INFO] [stderr]     Checking async-macros v1.0.0
[INFO] [stderr]     Checking futures-timer v1.0.3
[INFO] [stderr]     Checking mio v0.6.19
[INFO] [stderr]     Checking kv-log-macro v1.0.4
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking num-integer v0.1.41
[INFO] [stderr]     Checking rmp v0.8.8
[INFO] [stderr]     Checking chrono v0.4.9
[INFO] [stderr]     Checking simple_logger v1.3.0
[INFO] [stderr]    Compiling serde_derive v1.0.102
[INFO] [stderr]    Compiling async-attributes v1.1.1
[INFO] [stderr]     Checking async-std v1.0.1
[INFO] [stderr]     Checking rmp-serde v0.14.0
[INFO] [stderr]     Checking rschat v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting rschat v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 48.77s
[INFO] running `Command { std: "docker" "inspect" "14d7c20b4de659f647438b1078c74acd8f4b392c56613c4d3f04927c66fb73bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14d7c20b4de659f647438b1078c74acd8f4b392c56613c4d3f04927c66fb73bc", kill_on_drop: false }`
[INFO] [stdout] 14d7c20b4de659f647438b1078c74acd8f4b392c56613c4d3f04927c66fb73bc