[INFO] cloning repository https://github.com/DrBluefall/Butterbeer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/DrBluefall/Butterbeer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDrBluefall%2FButterbeer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDrBluefall%2FButterbeer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b9b156cdb6bd5ba27dae2d54ab86ce58d6995b37
[INFO] documenting DrBluefall/Butterbeer 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%2FDrBluefall%2FButterbeer" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/DrBluefall/Butterbeer 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/DrBluefall/Butterbeer
[INFO] finished tweaking git repo https://github.com/DrBluefall/Butterbeer
[INFO] tweaked toml for git repo https://github.com/DrBluefall/Butterbeer written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/DrBluefall/Butterbeer 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 25a770ca585acb566fb0205923fe116ed96a3bd88fd213f062558f10804e605c
[INFO] running `Command { std: "docker" "start" "-a" "25a770ca585acb566fb0205923fe116ed96a3bd88fd213f062558f10804e605c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "25a770ca585acb566fb0205923fe116ed96a3bd88fd213f062558f10804e605c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25a770ca585acb566fb0205923fe116ed96a3bd88fd213f062558f10804e605c", kill_on_drop: false }`
[INFO] [stdout] 25a770ca585acb566fb0205923fe116ed96a3bd88fd213f062558f10804e605c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] aae63e310e54f0f29cac25bff6ff7e7b40652999477e1524df95147c7c99a215
[INFO] running `Command { std: "docker" "start" "-a" "aae63e310e54f0f29cac25bff6ff7e7b40652999477e1524df95147c7c99a215", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling syn v1.0.11
[INFO] [stderr]    Compiling cc v1.0.48
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]     Checking arc-swap v0.4.4
[INFO] [stderr]     Checking regex-syntax v0.6.12
[INFO] [stderr]     Checking pin-project-lite v0.1.1
[INFO] [stderr]     Checking bytes v0.5.3
[INFO] [stderr]     Checking maplit v1.0.2
[INFO] [stderr]    Compiling num-traits v0.2.10
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking num_cpus v1.11.1
[INFO] [stderr]     Checking unix_socket v0.5.0
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking mio v0.6.21
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking signal-hook-registry v1.2.0
[INFO] [stderr]     Checking crossbeam-channel v0.3.9
[INFO] [stderr]     Checking uuid v0.6.5
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]     Checking parking_lot_core v0.4.0
[INFO] [stderr]     Checking parking_lot v0.7.1
[INFO] [stderr]     Checking rmp v0.8.8
[INFO] [stderr]     Checking regex v1.3.1
[INFO] [stderr]     Checking rmpv v0.4.2
[INFO] [stderr]     Checking chrono v0.4.10
[INFO] [stderr]     Checking backtrace v0.3.40
[INFO] [stderr]     Checking console v0.9.1
[INFO] [stderr]     Checking better-panic v0.2.0
[INFO] [stderr]     Checking serde_json v1.0.44
[INFO] [stderr]    Compiling tokio-macros v0.2.1
[INFO] [stderr]    Compiling async-trait v0.1.22
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]     Checking tokio v0.2.6
[INFO] [stderr]     Checking nvim-rs v0.0.1 (https://github.com/KillTheMule/nvim-rs#07fc8a00)
[INFO] [stderr]     Checking discord-rpc-client v0.3.0
[INFO] [stderr]  Documenting butterbeer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 52.94s
[INFO] running `Command { std: "docker" "inspect" "aae63e310e54f0f29cac25bff6ff7e7b40652999477e1524df95147c7c99a215", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aae63e310e54f0f29cac25bff6ff7e7b40652999477e1524df95147c7c99a215", kill_on_drop: false }`
[INFO] [stdout] aae63e310e54f0f29cac25bff6ff7e7b40652999477e1524df95147c7c99a215