[INFO] cloning repository https://github.com/boiding/workshop-server
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/boiding/workshop-server" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fboiding%2Fworkshop-server", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fboiding%2Fworkshop-server'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 840f17f028747c967fd7e2a22012292dc0f53236
[INFO] documenting boiding/workshop-server 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%2Fboiding%2Fworkshop-server" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/boiding/workshop-server 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/boiding/workshop-server
[INFO] finished tweaking git repo https://github.com/boiding/workshop-server
[INFO] tweaked toml for git repo https://github.com/boiding/workshop-server written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/boiding/workshop-server 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 sequence_trie v0.3.6
[INFO] [stderr]   Downloaded mount v0.4.0
[INFO] [stderr]   Downloaded ws v0.9.1
[INFO] [stderr]   Downloaded random v0.12.2
[INFO] [stderr]   Downloaded staticfile v0.5.0
[INFO] [stderr]   Downloaded logger v0.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 8c7c24e2a03c2608cb876a0b6bd0c0eb7ab1bd13f19cd157ab358b302eb09691
[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" "8c7c24e2a03c2608cb876a0b6bd0c0eb7ab1bd13f19cd157ab358b302eb09691", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8c7c24e2a03c2608cb876a0b6bd0c0eb7ab1bd13f19cd157ab358b302eb09691", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c7c24e2a03c2608cb876a0b6bd0c0eb7ab1bd13f19cd157ab358b302eb09691", kill_on_drop: false }`
[INFO] [stdout] 8c7c24e2a03c2608cb876a0b6bd0c0eb7ab1bd13f19cd157ab358b302eb09691
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 7529957fb57e4daa8c6149b093ad4f2d29b828ba86b2769320a40195b97874d7
[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" "7529957fb57e4daa8c6149b093ad4f2d29b828ba86b2769320a40195b97874d7", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling getrandom v0.1.12
[INFO] [stderr]     Checking want v0.0.4
[INFO] [stderr]     Checking serde_json v1.0.41
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking mio-extras v2.0.5
[INFO] [stderr]     Checking hyper v0.10.16
[INFO] [stderr]     Checking tokio-reactor v0.1.10
[INFO] [stderr]     Checking tokio-threadpool v0.1.16
[INFO] [stderr]     Checking tokio-udp v0.1.5
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking tokio-uds v0.2.5
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking tokio-fs v0.1.6
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]     Checking tokio-core v0.1.17
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling mime_guess v1.8.7
[INFO] [stderr]     Checking tokio-proto v0.1.1
[INFO] [stderr]     Checking ws v0.9.1
[INFO] [stderr]     Checking hyper v0.11.27
[INFO] [stderr]     Checking iron v0.6.1
[INFO] [stderr]     Checking mount v0.4.0
[INFO] [stderr]     Checking router v0.6.0
[INFO] [stderr]     Checking logger v0.4.0
[INFO] [stderr]     Checking staticfile v0.5.0
[INFO] [stderr]    Compiling serde_derive v1.0.101
[INFO] [stderr]  Documenting bws v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 48.05s
[INFO] running `Command { std: "docker" "inspect" "7529957fb57e4daa8c6149b093ad4f2d29b828ba86b2769320a40195b97874d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7529957fb57e4daa8c6149b093ad4f2d29b828ba86b2769320a40195b97874d7", kill_on_drop: false }`
[INFO] [stdout] 7529957fb57e4daa8c6149b093ad4f2d29b828ba86b2769320a40195b97874d7