[INFO] cloning repository https://github.com/Irchh/piston_test_game
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Irchh/piston_test_game" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIrchh%2Fpiston_test_game", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIrchh%2Fpiston_test_game'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 91ca81a4a5af9e91795bd9bba88bffa8e9173914
[INFO] documenting Irchh/piston_test_game 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%2FIrchh%2Fpiston_test_game" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Irchh/piston_test_game 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/Irchh/piston_test_game
[INFO] finished tweaking git repo https://github.com/Irchh/piston_test_game
[INFO] tweaked toml for git repo https://github.com/Irchh/piston_test_game written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/Irchh/piston_test_game 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 238d105d4da820c352f93d129c8bd0c7ba84ba980d8efcc7c0d8e1d85f110c2b
[INFO] running `Command { std: "docker" "start" "-a" "238d105d4da820c352f93d129c8bd0c7ba84ba980d8efcc7c0d8e1d85f110c2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "238d105d4da820c352f93d129c8bd0c7ba84ba980d8efcc7c0d8e1d85f110c2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "238d105d4da820c352f93d129c8bd0c7ba84ba980d8efcc7c0d8e1d85f110c2b", kill_on_drop: false }`
[INFO] [stdout] 238d105d4da820c352f93d129c8bd0c7ba84ba980d8efcc7c0d8e1d85f110c2b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] b847325dd891e18510c723b6a2bf8eb20d27d19e6ca4314eda77e7f81768b1a9
[INFO] running `Command { std: "docker" "start" "-a" "b847325dd891e18510c723b6a2bf8eb20d27d19e6ca4314eda77e7f81768b1a9", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.60
[INFO] [stderr]    Compiling rayon-core v1.5.0
[INFO] [stderr]     Checking percent-encoding v2.0.0
[INFO] [stderr]     Checking piston-texture v0.7.0
[INFO] [stderr]     Checking piston-texture v0.6.0
[INFO] [stderr]     Checking xmlparser v0.9.0
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]    Compiling xml-rs v0.7.0
[INFO] [stderr]     Checking rand_chacha v0.1.1
[INFO] [stderr]    Compiling memoffset v0.5.1
[INFO] [stderr]    Compiling parking_lot_core v0.5.0
[INFO] [stderr]    Compiling parking_lot v0.8.0
[INFO] [stderr]     Checking rand_pcg v0.1.2
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking pistoncore-input v0.28.0
[INFO] [stderr]     Checking gfx_core v0.8.3
[INFO] [stderr]    Compiling gl_generator v0.11.0
[INFO] [stderr]    Compiling gl_generator v0.10.0
[INFO] [stderr]     Checking rusttype v0.7.7
[INFO] [stderr]     Checking roxmltree v0.7.0
[INFO] [stderr]     Checking crossbeam-epoch v0.7.2
[INFO] [stderr]     Checking crossbeam-deque v0.6.3
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking num_cpus v1.10.1
[INFO] [stderr]     Checking nix v0.14.1
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking x11-dl v2.18.3
[INFO] [stderr]     Checking shared_library v0.1.9
[INFO] [stderr]     Checking osmesa-sys v0.1.2
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking andrew v0.2.1
[INFO] [stderr]     Checking piston2d-graphics v0.34.0
[INFO] [stderr]     Checking piston2d-graphics v0.33.0
[INFO] [stderr]    Compiling gl v0.11.0
[INFO] [stderr]    Compiling gl_generator v0.9.0
[INFO] [stderr]     Checking rayon v1.1.0
[INFO] [stderr]    Compiling glutin_egl_sys v0.1.3
[INFO] [stderr]    Compiling glutin_glx_sys v0.1.5
[INFO] [stderr]     Checking parking_lot_core v0.4.0
[INFO] [stderr]     Checking pistoncore-window v0.44.0
[INFO] [stderr]     Checking pistoncore-event_loop v0.49.0
[INFO] [stderr]     Checking parking_lot v0.7.1
[INFO] [stderr]    Compiling gfx_gl v0.5.0
[INFO] [stderr]     Checking piston v0.49.0
[INFO] [stderr]     Checking gfx v0.17.1
[INFO] [stderr]     Checking jpeg-decoder v0.1.15
[INFO] [stderr]     Checking image v0.22.1
[INFO] [stderr]     Checking wayland-commons v0.21.13
[INFO] [stderr]     Checking wayland-client v0.21.13
[INFO] [stderr]     Checking wayland-protocols v0.21.13
[INFO] [stderr]     Checking gfx_device_gl v0.15.5
[INFO] [stderr]     Checking piston-gfx_texture v0.38.0
[INFO] [stderr]     Checking piston2d-opengl_graphics v0.67.0
[INFO] [stderr]     Checking piston2d-gfx_graphics v0.64.0
[INFO] [stderr]     Checking smithay-client-toolkit v0.4.6
[INFO] [stderr]     Checking winit v0.19.2
[INFO] [stderr]     Checking glutin v0.21.0
[INFO] [stderr]     Checking pistoncore-glutin_window v0.63.0
[INFO] [stderr]     Checking piston_window v0.103.0
[INFO] [stderr]  Documenting piston_test_game v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(clamp)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `piston_test_game`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name piston_test_game 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 piston=/opt/rustwide/target/debug/deps/libpiston-da4f138234c1d846.rmeta --extern graphics=/opt/rustwide/target/debug/deps/libgraphics-8857fc4094f0118a.rmeta --extern opengl_graphics=/opt/rustwide/target/debug/deps/libopengl_graphics-9eb1e02f40bd17ab.rmeta --extern piston_window=/opt/rustwide/target/debug/deps/libpiston_window-3b733252d624dae4.rmeta --extern roxmltree=/opt/rustwide/target/debug/deps/libroxmltree-0497695eae3e5358.rmeta --cap-lints=warn` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "b847325dd891e18510c723b6a2bf8eb20d27d19e6ca4314eda77e7f81768b1a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b847325dd891e18510c723b6a2bf8eb20d27d19e6ca4314eda77e7f81768b1a9", kill_on_drop: false }`
[INFO] [stdout] b847325dd891e18510c723b6a2bf8eb20d27d19e6ca4314eda77e7f81768b1a9