[INFO] cloning repository https://github.com/brandonpollack23/vulkan-comparison
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/brandonpollack23/vulkan-comparison" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrandonpollack23%2Fvulkan-comparison", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrandonpollack23%2Fvulkan-comparison'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3a10ba4b3e0fb94c039a4a980f6f1e37ee2ef432
[INFO] documenting brandonpollack23/vulkan-comparison 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%2Fbrandonpollack23%2Fvulkan-comparison" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/brandonpollack23/vulkan-comparison 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/brandonpollack23/vulkan-comparison
[INFO] finished tweaking git repo https://github.com/brandonpollack23/vulkan-comparison
[INFO] tweaked toml for git repo https://github.com/brandonpollack23/vulkan-comparison written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/brandonpollack23/vulkan-comparison 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 andrew v0.1.5
[INFO] [stderr]   Downloaded byteorder v1.3.0
[INFO] [stderr]   Downloaded rusttype v0.7.3
[INFO] [stderr]   Downloaded stb_truetype v0.2.5
[INFO] [stderr]   Downloaded ash v0.27.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 7279659fe43f91bec70e289bf62689e1bd412eb8cbb5ee14d35cc528dab234cb
[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" "7279659fe43f91bec70e289bf62689e1bd412eb8cbb5ee14d35cc528dab234cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7279659fe43f91bec70e289bf62689e1bd412eb8cbb5ee14d35cc528dab234cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7279659fe43f91bec70e289bf62689e1bd412eb8cbb5ee14d35cc528dab234cb", kill_on_drop: false }`
[INFO] [stdout] 7279659fe43f91bec70e289bf62689e1bd412eb8cbb5ee14d35cc528dab234cb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 7109c8ce7c6d30e83322b33842b6deab368d8f09e6866fc53f89884e3be6b91a
[INFO] running `Command { std: "docker" "start" "-a" "7109c8ce7c6d30e83322b33842b6deab368d8f09e6866fc53f89884e3be6b91a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling byteorder v1.3.0
[INFO] [stderr]    Compiling cgmath v0.17.0
[INFO] [stderr]    Compiling winapi v0.3.6
[INFO] [stderr]     Checking nix v0.12.0
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking shared_library v0.1.9
[INFO] [stderr]     Checking x11-dl v2.18.3
[INFO] [stderr]     Checking approx v0.3.1
[INFO] [stderr]    Compiling wayland-scanner v0.21.11
[INFO] [stderr]     Checking parking_lot_core v0.4.0
[INFO] [stderr]     Checking dlib v0.4.1
[INFO] [stderr]     Checking ash v0.27.1
[INFO] [stderr]     Checking wayland-sys v0.21.11
[INFO] [stderr]     Checking parking_lot v0.7.1
[INFO] [stderr]     Checking stb_truetype v0.2.5
[INFO] [stderr]     Checking rusttype v0.7.3
[INFO] [stderr]    Compiling wayland-client v0.21.11
[INFO] [stderr]    Compiling wayland-protocols v0.21.11
[INFO] [stderr]     Checking andrew v0.1.5
[INFO] [stderr]     Checking wayland-commons v0.21.11
[INFO] [stderr]     Checking smithay-client-toolkit v0.4.4
[INFO] [stderr]     Checking winit v0.18.1
[INFO] [stderr]  Documenting vulkan-comparison v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 40.03s
[INFO] running `Command { std: "docker" "inspect" "7109c8ce7c6d30e83322b33842b6deab368d8f09e6866fc53f89884e3be6b91a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7109c8ce7c6d30e83322b33842b6deab368d8f09e6866fc53f89884e3be6b91a", kill_on_drop: false }`
[INFO] [stdout] 7109c8ce7c6d30e83322b33842b6deab368d8f09e6866fc53f89884e3be6b91a