[INFO] cloning repository https://github.com/LevitatingOrange/circular-family-tree
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LevitatingOrange/circular-family-tree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLevitatingOrange%2Fcircular-family-tree", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLevitatingOrange%2Fcircular-family-tree'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3b371aa50935cd9d0b4f2604683dd3ce856f5e78
[INFO] documenting LevitatingOrange/circular-family-tree 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%2FLevitatingOrange%2Fcircular-family-tree" "/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/LevitatingOrange/circular-family-tree 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/LevitatingOrange/circular-family-tree
[INFO] finished tweaking git repo https://github.com/LevitatingOrange/circular-family-tree
[INFO] tweaked toml for git repo https://github.com/LevitatingOrange/circular-family-tree written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/LevitatingOrange/circular-family-tree 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 proc-macro2 v1.0.2
[INFO] [stderr]   Downloaded data-url v0.1.0
[INFO] [stderr]   Downloaded typed-arena v1.5.0
[INFO] [stderr]   Downloaded lyon_geom v0.14.0
[INFO] [stderr]   Downloaded structopt-derive v0.3.0
[INFO] [stderr]   Downloaded euclid v0.20.1
[INFO] [stderr]   Downloaded kurbo v0.2.3
[INFO] [stderr]   Downloaded libflate v0.1.27
[INFO] [stderr]   Downloaded float-cmp v0.5.2
[INFO] [stderr]   Downloaded harfbuzz-sys v0.3.2
[INFO] [stderr]   Downloaded sw-composite v0.5.10
[INFO] [stderr]   Downloaded roxmltree v0.7.0
[INFO] [stderr]   Downloaded raqote v0.6.3
[INFO] [stderr]   Downloaded usvg v0.8.0
[INFO] [stderr]   Downloaded resvg v0.8.0
[INFO] [stderr]   Downloaded simplecss v0.2.0
[INFO] [stderr]   Downloaded svgtypes v0.5.0
[INFO] [stderr]   Downloaded unicode-vo v0.1.0
[INFO] [stderr]   Downloaded svg v0.5.12
[INFO] [stderr]   Downloaded structopt v0.3.0
[INFO] [stderr]   Downloaded harfbuzz_rs v1.0.0
[INFO] [stderr]   Downloaded xmlparser v0.9.0
[INFO] [stderr]   Downloaded ttf-parser v0.2.2
[INFO] [stderr]   Downloaded rctree v0.3.3
[INFO] [stderr]   Downloaded unicode-script v0.3.0
[INFO] [stderr]   Downloaded xmlwriter v0.1.0
[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" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 91c2b8e69a36831859a2512e1a3cfdaaa7f835962b50b96ba16ed5d417945dd6
[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" "91c2b8e69a36831859a2512e1a3cfdaaa7f835962b50b96ba16ed5d417945dd6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "91c2b8e69a36831859a2512e1a3cfdaaa7f835962b50b96ba16ed5d417945dd6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91c2b8e69a36831859a2512e1a3cfdaaa7f835962b50b96ba16ed5d417945dd6", kill_on_drop: false }`
[INFO] [stdout] 91c2b8e69a36831859a2512e1a3cfdaaa7f835962b50b96ba16ed5d417945dd6
[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" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5b13d82be1b7cbb9dab256ed836234b43938f08fc7cd5a582557f9db951ba650
[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" "5b13d82be1b7cbb9dab256ed836234b43938f08fc7cd5a582557f9db951ba650", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.2
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]     Checking xmlparser v0.9.0
[INFO] [stderr]     Checking float-cmp v0.5.2
[INFO] [stderr]     Checking sw-composite v0.5.10
[INFO] [stderr]     Checking unicode-script v0.3.0
[INFO] [stderr]     Checking typed-arena v1.5.0
[INFO] [stderr]     Checking unicode-vo v0.1.0
[INFO] [stderr]     Checking rctree v0.3.3
[INFO] [stderr]     Checking ttf-parser v0.2.2
[INFO] [stderr]     Checking xmlwriter v0.1.0
[INFO] [stderr]     Checking svg v0.5.12
[INFO] [stderr]     Checking data-url v0.1.0
[INFO] [stderr]    Compiling cmake v0.1.42
[INFO] [stderr]     Checking libflate v0.1.27
[INFO] [stderr]     Checking simplecss v0.2.0
[INFO] [stderr]     Checking kurbo v0.2.3
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking euclid v0.20.1
[INFO] [stderr]     Checking svgtypes v0.5.0
[INFO] [stderr]    Compiling serde_derive v1.0.87
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]     Checking roxmltree v0.7.0
[INFO] [stderr]    Compiling servo-freetype-sys v4.0.5
[INFO] [stderr]    Compiling harfbuzz-sys v0.3.2
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking lyon_geom v0.14.0
[INFO] [stderr]     Checking freetype v0.4.1
[INFO] [stderr]     Checking raqote v0.6.3
[INFO] [stderr]     Checking harfbuzz_rs v1.0.0
[INFO] [stderr]     Checking usvg v0.8.0
[INFO] [stderr]     Checking resvg v0.8.0
[INFO] [stderr]    Compiling proc-macro-error v0.2.6
[INFO] [stderr]    Compiling structopt-derive v0.3.0
[INFO] [stderr]     Checking structopt v0.3.0
[INFO] [stderr]  Documenting circular-binary-tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 48.82s
[INFO] running `Command { std: "docker" "inspect" "5b13d82be1b7cbb9dab256ed836234b43938f08fc7cd5a582557f9db951ba650", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b13d82be1b7cbb9dab256ed836234b43938f08fc7cd5a582557f9db951ba650", kill_on_drop: false }`
[INFO] [stdout] 5b13d82be1b7cbb9dab256ed836234b43938f08fc7cd5a582557f9db951ba650