[INFO] cloning repository https://github.com/Thomas2511/Gomoku
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Thomas2511/Gomoku" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FThomas2511%2FGomoku", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FThomas2511%2FGomoku'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4d9c73b2a3b137b3d22be1a0e9d84349e2dc81a7
[INFO] documenting Thomas2511/Gomoku 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%2FThomas2511%2FGomoku" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Thomas2511/Gomoku 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/Thomas2511/Gomoku
[INFO] finished tweaking git repo https://github.com/Thomas2511/Gomoku
[INFO] tweaked toml for git repo https://github.com/Thomas2511/Gomoku written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/Thomas2511/Gomoku 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] [stdout] 560084c5aac0e010e2cb3fe19657526953fc933bef58dc08abdc72c098df2071
[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" "560084c5aac0e010e2cb3fe19657526953fc933bef58dc08abdc72c098df2071", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "560084c5aac0e010e2cb3fe19657526953fc933bef58dc08abdc72c098df2071", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "560084c5aac0e010e2cb3fe19657526953fc933bef58dc08abdc72c098df2071", kill_on_drop: false }`
[INFO] [stdout] 560084c5aac0e010e2cb3fe19657526953fc933bef58dc08abdc72c098df2071
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] [stdout] c833127ae56c77a4fa367836bd9ce14a4f551bd5cc2fedbf969b6bd6682b6fa5
[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" "c833127ae56c77a4fa367836bd9ce14a4f551bd5cc2fedbf969b6bd6682b6fa5", kill_on_drop: false }`
[INFO] [stderr]     Checking rustc-demangle v0.1.3
[INFO] [stderr]     Checking cfg-if v0.1.0
[INFO] [stderr]     Checking unicode-segmentation v0.1.3
[INFO] [stderr]     Checking itertools v0.4.19
[INFO] [stderr]    Compiling serde_json v0.8.4
[INFO] [stderr]    Compiling backtrace-sys v0.1.5
[INFO] [stderr]     Checking term_size v0.2.1
[INFO] [stderr]     Checking cgmath v0.12.0
[INFO] [stderr]    Compiling libz-sys v1.0.10
[INFO] [stderr]    Compiling glutin v0.7.2
[INFO] [stderr]    Compiling glium v0.16.0
[INFO] [stderr]     Checking num-bigint v0.1.35
[INFO] [stderr]    Compiling wayland-client v0.7.6
[INFO] [stderr]     Checking jpeg-decoder v0.1.11
[INFO] [stderr]    Compiling target_build_utils v0.1.2
[INFO] [stderr]    Compiling freetype-sys v0.4.0
[INFO] [stderr]     Checking clap v2.19.3
[INFO] [stderr]     Checking backtrace v0.2.3
[INFO] [stderr]     Checking num-rational v0.1.35
[INFO] [stderr]     Checking image v0.12.1
[INFO] [stderr]    Compiling libloading v0.3.1
[INFO] [stderr]     Checking dlib v0.3.1
[INFO] [stderr]     Checking wayland-sys v0.7.6
[INFO] [stderr]     Checking wayland-kbd v0.6.2
[INFO] [stderr]     Checking wayland-window v0.4.3
[INFO] [stderr]     Checking winit v0.5.7
[INFO] [stderr]     Checking glium_text v0.11.0
[INFO] [stderr]  Documenting gomoku v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(slice_patterns)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(range_contains)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 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 `gomoku`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name gomoku src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern cgmath=/opt/rustwide/target/debug/deps/libcgmath-b4da06206139e5f0.rmeta --extern clap=/opt/rustwide/target/debug/deps/libclap-d5ef3edddcec4e08.rmeta --extern find_folder=/opt/rustwide/target/debug/deps/libfind_folder-8e70b89ef01b65ac.rmeta --extern glium=/opt/rustwide/target/debug/deps/libglium-2cf09d904d5d320a.rmeta --extern glium_text=/opt/rustwide/target/debug/deps/libglium_text-3ebc85bd56cf8b1c.rmeta --extern glutin=/opt/rustwide/target/debug/deps/libglutin-05117c5a443ddd3d.rmeta --extern image=/opt/rustwide/target/debug/deps/libimage-680e31db938ef92f.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-69778770be4cebd7.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-68ab572c0f249a35.rmeta --extern time=/opt/rustwide/target/debug/deps/libtime-3927621f4057b810.rmeta --cap-lints=warn` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "c833127ae56c77a4fa367836bd9ce14a4f551bd5cc2fedbf969b6bd6682b6fa5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c833127ae56c77a4fa367836bd9ce14a4f551bd5cc2fedbf969b6bd6682b6fa5", kill_on_drop: false }`
[INFO] [stdout] c833127ae56c77a4fa367836bd9ce14a4f551bd5cc2fedbf969b6bd6682b6fa5