[INFO] cloning repository https://github.com/loovjo/neat-driver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/loovjo/neat-driver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Floovjo%2Fneat-driver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Floovjo%2Fneat-driver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] eb25f341849c82536435c35d7c0e8fbea571b5f1
[INFO] documenting loovjo/neat-driver 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%2Floovjo%2Fneat-driver" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/loovjo/neat-driver 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/loovjo/neat-driver
[INFO] finished tweaking git repo https://github.com/loovjo/neat-driver
[INFO] tweaked toml for git repo https://github.com/loovjo/neat-driver written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/loovjo/neat-driver 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 ytesrev v0.2.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d5dbd068939eb4e8b427f751c2d8c545a505bc8a189fd18a8e16d341388656b6
[INFO] running `Command { std: "docker" "start" "-a" "d5dbd068939eb4e8b427f751c2d8c545a505bc8a189fd18a8e16d341388656b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d5dbd068939eb4e8b427f751c2d8c545a505bc8a189fd18a8e16d341388656b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5dbd068939eb4e8b427f751c2d8c545a505bc8a189fd18a8e16d341388656b6", kill_on_drop: false }`
[INFO] [stdout] d5dbd068939eb4e8b427f751c2d8c545a505bc8a189fd18a8e16d341388656b6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 25b1766c9836a8ca844c1e598c8435e872644720a54610e609673a1efb9e8735
[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" "25b1766c9836a8ca844c1e598c8435e872644720a54610e609673a1efb9e8735", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.23
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling rand_core v0.3.0
[INFO] [stderr]    Compiling serde v1.0.80
[INFO] [stderr]    Compiling phf_shared v0.7.23
[INFO] [stderr]    Compiling sdl2-sys v0.31.0
[INFO] [stderr]     Checking inflate v0.4.3
[INFO] [stderr]     Checking deflate v0.7.19
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]     Checking phf v0.7.23
[INFO] [stderr]    Compiling rand_core v0.2.2
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]     Checking rayon-core v1.4.1
[INFO] [stderr]    Compiling quote v0.6.10
[INFO] [stderr]     Checking num-iter v0.1.37
[INFO] [stderr]     Checking rayon v1.0.3
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling syn v0.15.20
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking png v0.12.0
[INFO] [stderr]     Checking sdl2 v0.31.0
[INFO] [stderr]    Compiling phf_generator v0.7.23
[INFO] [stderr]    Compiling phf_codegen v0.7.23
[INFO] [stderr]    Compiling palette v0.4.1
[INFO] [stderr]     Checking ytesrev v0.2.4
[INFO] [stderr]    Compiling serde_derive v1.0.80
[INFO] [stderr]     Checking bincode v1.0.1
[INFO] [stderr]    Compiling palette_derive v0.4.1
[INFO] [stderr]  Documenting NEAT-Pong v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(bind_by_move_pattern_guards)]
[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 `NEAT-Pong`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name NEAT_Pong 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 bincode=/opt/rustwide/target/debug/deps/libbincode-c496289ae23c37fe.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-d9b4b658eae13ced.rmeta --extern palette=/opt/rustwide/target/debug/deps/libpalette-79309582a365dd8c.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-14f856f079f391d2.rmeta --extern sdl2=/opt/rustwide/target/debug/deps/libsdl2-d4f698785d899c51.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-9d5ae4615c4db4f5.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-f82fa10df8970bec.so --extern ytesrev=/opt/rustwide/target/debug/deps/libytesrev-854493fc5bcae240.rmeta --cap-lints=warn --crate-version 0.1.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "25b1766c9836a8ca844c1e598c8435e872644720a54610e609673a1efb9e8735", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25b1766c9836a8ca844c1e598c8435e872644720a54610e609673a1efb9e8735", kill_on_drop: false }`
[INFO] [stdout] 25b1766c9836a8ca844c1e598c8435e872644720a54610e609673a1efb9e8735