[INFO] cloning repository https://github.com/billyvreeland/rusty-forest
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/billyvreeland/rusty-forest" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbillyvreeland%2Frusty-forest", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbillyvreeland%2Frusty-forest'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0a0fe53da300d3140300c3231d8e01c20c596b70
[INFO] documenting billyvreeland/rusty-forest 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%2Fbillyvreeland%2Frusty-forest" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/billyvreeland/rusty-forest 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/billyvreeland/rusty-forest
[INFO] finished tweaking git repo https://github.com/billyvreeland/rusty-forest
[INFO] tweaked toml for git repo https://github.com/billyvreeland/rusty-forest written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/billyvreeland/rusty-forest 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 ndarray-csv v0.4.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] f07528234c8c8cb0bc6d09b146326b51fef9c3a32c71e7e6bd1bbabd8b883e01
[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" "f07528234c8c8cb0bc6d09b146326b51fef9c3a32c71e7e6bd1bbabd8b883e01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f07528234c8c8cb0bc6d09b146326b51fef9c3a32c71e7e6bd1bbabd8b883e01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f07528234c8c8cb0bc6d09b146326b51fef9c3a32c71e7e6bd1bbabd8b883e01", kill_on_drop: false }`
[INFO] [stdout] f07528234c8c8cb0bc6d09b146326b51fef9c3a32c71e7e6bd1bbabd8b883e01
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] 079a3ea0f0e276b310b8d5e5e0e8c24be523bf03680b4b304fa38854f89ea9f4
[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" "079a3ea0f0e276b310b8d5e5e0e8c24be523bf03680b4b304fa38854f89ea9f4", kill_on_drop: false }`
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking bstr v0.2.13
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking csv v1.1.3
[INFO] [stderr]     Checking ndarray-csv v0.4.1
[INFO] [stderr]  Documenting rusty-forest v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.41s
[INFO] running `Command { std: "docker" "inspect" "079a3ea0f0e276b310b8d5e5e0e8c24be523bf03680b4b304fa38854f89ea9f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "079a3ea0f0e276b310b8d5e5e0e8c24be523bf03680b4b304fa38854f89ea9f4", kill_on_drop: false }`
[INFO] [stdout] 079a3ea0f0e276b310b8d5e5e0e8c24be523bf03680b4b304fa38854f89ea9f4