[INFO] cloning repository https://github.com/ajprax/piston-tutorial
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ajprax/piston-tutorial" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fajprax%2Fpiston-tutorial", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fajprax%2Fpiston-tutorial'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 040d184f31a84b2d3dcd8b94d943f8fcf1153d02
[INFO] documenting ajprax/piston-tutorial 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%2Fajprax%2Fpiston-tutorial" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ajprax/piston-tutorial 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/ajprax/piston-tutorial
[INFO] finished tweaking git repo https://github.com/ajprax/piston-tutorial
[INFO] tweaked toml for git repo https://github.com/ajprax/piston-tutorial written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/ajprax/piston-tutorial 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 pistoncore-event_loop v0.48.0
[INFO] [stderr]   Downloaded interpolation v0.2.0
[INFO] [stderr]   Downloaded glutin_emscripten_sys v0.1.0
[INFO] [stderr]   Downloaded piston2d-gfx_graphics v0.61.0
[INFO] [stderr]   Downloaded winit v0.19.1
[INFO] [stderr]   Downloaded gleam v0.6.17
[INFO] [stderr]   Downloaded downcast-rs v1.0.4
[INFO] [stderr]   Downloaded vecmath v1.0.0
[INFO] [stderr]   Downloaded piston-gfx_texture v0.36.0
[INFO] [stderr]   Downloaded fps_counter v1.0.0
[INFO] [stderr]   Downloaded piston-float v1.0.0
[INFO] [stderr]   Downloaded shader_version v0.6.0
[INFO] [stderr]   Downloaded piston_window v0.99.0
[INFO] [stderr]   Downloaded glutin v0.21.0
[INFO] [stderr]   Downloaded pistoncore-glutin_window v0.62.1
[INFO] [stderr]   Downloaded piston v0.48.0
[INFO] [stderr]   Downloaded piston2d-graphics v0.32.0
[INFO] [stderr]   Downloaded gl v0.11.0
[INFO] [stderr]   Downloaded cocoa v0.18.4
[INFO] [stderr]   Downloaded pistoncore-window v0.43.0
[INFO] [stderr]   Downloaded piston-viewport v1.0.0
[INFO] [stderr]   Downloaded glutin_egl_sys v0.1.3
[INFO] [stderr]   Downloaded piston2d-opengl_graphics v0.65.0
[INFO] [stderr]   Downloaded libloading v0.5.1
[INFO] [stderr]   Downloaded pistoncore-input v0.28.0
[INFO] [stderr]   Downloaded piston-graphics_api_version v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 23ee36a02719361c7822bdb92204f8a36eb21e0f8c83e66de2d426c746e51578
[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" "23ee36a02719361c7822bdb92204f8a36eb21e0f8c83e66de2d426c746e51578", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "23ee36a02719361c7822bdb92204f8a36eb21e0f8c83e66de2d426c746e51578", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23ee36a02719361c7822bdb92204f8a36eb21e0f8c83e66de2d426c746e51578", kill_on_drop: false }`
[INFO] [stdout] 23ee36a02719361c7822bdb92204f8a36eb21e0f8c83e66de2d426c746e51578
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 8915ccbae500d1764cd776e921658b5ba467d3e6a2b99636782bf1b60fb4541e
[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" "8915ccbae500d1764cd776e921658b5ba467d3e6a2b99636782bf1b60fb4541e", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v0.15.36
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]     Checking fps_counter v1.0.0
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling libloading v0.5.1
[INFO] [stderr]     Checking walkdir v2.2.8
[INFO] [stderr]     Checking stb_truetype v0.2.6
[INFO] [stderr]     Checking deflate v0.7.19
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking shared_library v0.1.9
[INFO] [stderr]    Compiling xml-rs v0.7.0
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking ordered-float v1.0.2
[INFO] [stderr]     Checking line_drawing v0.7.0
[INFO] [stderr]     Checking x11-dl v2.18.3
[INFO] [stderr]    Compiling wayland-scanner v0.21.13
[INFO] [stderr]     Checking crossbeam-epoch v0.7.1
[INFO] [stderr]     Checking draw_state v0.8.0
[INFO] [stderr]     Checking osmesa-sys v0.1.2
[INFO] [stderr]     Checking num-format v0.4.0
[INFO] [stderr]    Compiling gl_generator v0.11.0
[INFO] [stderr]    Compiling gl_generator v0.10.0
[INFO] [stderr]     Checking parking_lot_core v0.4.0
[INFO] [stderr]     Checking rusttype v0.7.7
[INFO] [stderr]     Checking png v0.14.1
[INFO] [stderr]     Checking parking_lot v0.7.1
[INFO] [stderr]     Checking crossbeam-deque v0.6.3
[INFO] [stderr]     Checking andrew v0.2.1
[INFO] [stderr]     Checking piston2d-graphics v0.32.0
[INFO] [stderr]     Checking dlib v0.4.1
[INFO] [stderr]     Checking rayon-core v1.5.0
[INFO] [stderr]     Checking wayland-sys v0.21.13
[INFO] [stderr]    Compiling gl_generator v0.9.0
[INFO] [stderr]     Checking rayon v1.1.0
[INFO] [stderr]     Checking wayland-commons v0.21.13
[INFO] [stderr]    Compiling glutin_egl_sys v0.1.3
[INFO] [stderr]    Compiling glutin_glx_sys v0.1.5
[INFO] [stderr]    Compiling gl v0.11.0
[INFO] [stderr]    Compiling wayland-client v0.21.13
[INFO] [stderr]    Compiling wayland-protocols v0.21.13
[INFO] [stderr]    Compiling gfx_gl v0.5.0
[INFO] [stderr]     Checking jpeg-decoder v0.1.15
[INFO] [stderr]    Compiling derivative v1.0.2
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]    Compiling serde_derive v1.0.92
[INFO] [stderr]     Checking tiff v0.2.2
[INFO] [stderr]     Checking image v0.21.2
[INFO] [stderr]     Checking gfx_core v0.8.3
[INFO] [stderr]     Checking smithay-client-toolkit v0.4.6
[INFO] [stderr]     Checking piston2d-opengl_graphics v0.65.0
[INFO] [stderr]     Checking gfx v0.17.1
[INFO] [stderr]     Checking gfx_device_gl v0.15.5
[INFO] [stderr]     Checking winit v0.19.1
[INFO] [stderr]     Checking pistoncore-input v0.28.0
[INFO] [stderr]     Checking piston-gfx_texture v0.36.0
[INFO] [stderr]     Checking piston2d-gfx_graphics v0.61.0
[INFO] [stderr]     Checking glutin v0.21.0
[INFO] [stderr]     Checking pistoncore-window v0.43.0
[INFO] [stderr]     Checking pistoncore-event_loop v0.48.0
[INFO] [stderr]     Checking pistoncore-glutin_window v0.62.1
[INFO] [stderr]     Checking piston v0.48.0
[INFO] [stderr]     Checking piston_window v0.99.0
[INFO] [stderr]  Documenting piston-tutorial v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: expected one of `::`, `;`, or `as`, found keyword `use`
[INFO] [stdout]   --> src/main.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | use graphics::color
[INFO] [stdout]    |                    - expected one of `::`, `;`, or `as`
[INFO] [stdout] 15 | use num_format::{Locale, ToFormattedString};
[INFO] [stdout]    | ^^^ unexpected token
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `piston-tutorial`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name gravity src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern find_folder=/opt/rustwide/target/debug/deps/libfind_folder-dfcbcb2471a6c1c0.rmeta --extern fps_counter=/opt/rustwide/target/debug/deps/libfps_counter-d6d9a369b11b0475.rmeta --extern num_format=/opt/rustwide/target/debug/deps/libnum_format-5391aff9d6e3c374.rmeta --extern piston=/opt/rustwide/target/debug/deps/libpiston-e1fdd8434ca4016e.rmeta --extern texture=/opt/rustwide/target/debug/deps/libtexture-bd6e64c150b90c1e.rmeta --extern graphics=/opt/rustwide/target/debug/deps/libgraphics-09ba735f96230e2f.rmeta --extern opengl_graphics=/opt/rustwide/target/debug/deps/libopengl_graphics-d447c659fb596662.rmeta --extern piston_window=/opt/rustwide/target/debug/deps/libpiston_window-bd86a6d41799666b.rmeta --extern glutin_window=/opt/rustwide/target/debug/deps/libglutin_window-0f35e48e9e577563.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-f65f82d5ea38b143.rmeta --extern rayon=/opt/rustwide/target/debug/deps/librayon-a262cf7c5ff17c45.rmeta --cap-lints=warn --crate-version 0.1.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "8915ccbae500d1764cd776e921658b5ba467d3e6a2b99636782bf1b60fb4541e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8915ccbae500d1764cd776e921658b5ba467d3e6a2b99636782bf1b60fb4541e", kill_on_drop: false }`
[INFO] [stdout] 8915ccbae500d1764cd776e921658b5ba467d3e6a2b99636782bf1b60fb4541e