[INFO] cloning repository https://github.com/ctfhacker/maverickcardgame
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ctfhacker/maverickcardgame" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fctfhacker%2Fmaverickcardgame", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fctfhacker%2Fmaverickcardgame'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3d8392c82564578381c5b8a2daedf9221676c394
[INFO] documenting ctfhacker/maverickcardgame 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%2Fctfhacker%2Fmaverickcardgame" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ctfhacker/maverickcardgame 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/ctfhacker/maverickcardgame
[INFO] finished tweaking git repo https://github.com/ctfhacker/maverickcardgame
[INFO] tweaked toml for git repo https://github.com/ctfhacker/maverickcardgame written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/ctfhacker/maverickcardgame 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 ...
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] bef9ed01fc197280a171125f35d1045e6207dd30ddd67437bfb91626b6ddca0e
[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" "bef9ed01fc197280a171125f35d1045e6207dd30ddd67437bfb91626b6ddca0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bef9ed01fc197280a171125f35d1045e6207dd30ddd67437bfb91626b6ddca0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bef9ed01fc197280a171125f35d1045e6207dd30ddd67437bfb91626b6ddca0e", kill_on_drop: false }`
[INFO] [stdout] bef9ed01fc197280a171125f35d1045e6207dd30ddd67437bfb91626b6ddca0e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 87a544565069c569d04e7f2b2805b81609a7cbae2c736595983dcd6847598a72
[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" "87a544565069c569d04e7f2b2805b81609a7cbae2c736595983dcd6847598a72", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling encoding_index_tests v0.1.4
[INFO] [stderr]    Compiling bit-vec v0.6.2
[INFO] [stderr]    Compiling lalrpop-util v0.16.3
[INFO] [stderr]     Checking futures-core-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling RustyXML v0.1.1
[INFO] [stderr]    Compiling cc v1.0.55
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]     Checking instant v0.1.4
[INFO] [stderr]     Checking array-macro v1.0.5
[INFO] [stderr]    Compiling unreachable v0.1.1
[INFO] [stderr]    Compiling utf-8 v0.6.0
[INFO] [stderr]    Compiling hashbrown v0.7.2
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling ena v0.11.0
[INFO] [stderr]    Compiling gl_generator v0.13.1
[INFO] [stderr]     Checking jpeg-decoder v0.1.19
[INFO] [stderr]    Compiling stdweb v0.4.20
[INFO] [stderr]    Compiling encoding-index-tradchinese v1.20141219.5
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[INFO] [stderr]    Compiling encoding-index-singlebyte v1.20141219.5
[INFO] [stderr]    Compiling encoding-index-japanese v1.20141219.5
[INFO] [stderr]    Compiling encoding-index-simpchinese v1.20141219.5
[INFO] [stderr]    Compiling debug_unreachable v0.1.1
[INFO] [stderr]     Checking ordered-float v1.0.2
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking line_drawing v0.7.0
[INFO] [stderr]    Compiling enum-map-derive v0.4.3
[INFO] [stderr]     Checking futures-util-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking futures-channel-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling bit-set v0.5.2
[INFO] [stderr]     Checking num-iter v0.1.41
[INFO] [stderr]     Checking num-rational v0.2.4
[INFO] [stderr]    Compiling docopt v1.1.0
[INFO] [stderr]    Compiling serde_json v1.0.55
[INFO] [stderr]    Compiling stdweb-derive v0.5.3
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking png v0.15.3
[INFO] [stderr]     Checking rusttype v0.8.3
[INFO] [stderr]    Compiling encoding v0.2.33
[INFO] [stderr]     Checking rusttype v0.7.9
[INFO] [stderr]     Checking elefont v0.1.3
[INFO] [stderr]     Checking andrew v0.2.1
[INFO] [stderr]     Checking image v0.22.5
[INFO] [stderr]    Compiling glow v0.4.0
[INFO] [stderr]    Compiling glutin_glx_sys v0.1.6
[INFO] [stderr]    Compiling glutin_egl_sys v0.1.4
[INFO] [stderr]    Compiling tendril v0.2.4
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]     Checking enum-map v0.6.2
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]     Checking net2 v0.2.34
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking nix v0.14.1
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking memmap v0.7.0
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[INFO] [stderr]     Checking parking_lot_core v0.7.2
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[INFO] [stderr]     Checking raw-window-handle v0.3.3
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[INFO] [stderr]     Checking libudev-sys v0.1.4
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[INFO] [stderr]    Compiling clap v2.33.1
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[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking mio-extras v2.0.6
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling string_cache_codegen v0.3.1
[INFO] [stderr]    Compiling string_cache_codegen v0.4.4
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]     Checking simple_logger v1.6.0
[INFO] [stderr]    Compiling html5ever v0.13.1
[INFO] [stderr]    Compiling string_cache v0.7.5
[INFO] [stderr]    Compiling string_cache v0.4.0
[INFO] [stderr]    Compiling html5ever-atoms v0.2.2
[INFO] [stderr]     Checking wayland-commons v0.23.6
[INFO] [stderr]     Checking calloop v0.4.4
[INFO] [stderr]     Checking wayland-client v0.23.6
[INFO] [stderr]    Compiling lalrpop v0.16.3
[INFO] [stderr]     Checking gilrs-core v0.2.6
[INFO] [stderr]     Checking gilrs v0.7.4
[INFO] [stderr]     Checking wayland-protocols v0.23.6
[INFO] [stderr]    Compiling html2runes v1.0.1
[INFO] [stderr]     Checking golem v0.1.5
[INFO] [stderr]     Checking smithay-client-toolkit v0.6.6
[INFO] [stderr]     Checking winit v0.22.2
[INFO] [stderr]     Checking glutin v0.24.1
[INFO] [stderr]     Checking platter v0.1.4
[INFO] [stderr]    Compiling webidl v0.8.0
[INFO] [stderr]    Compiling webgl_generator v0.2.0
[INFO] [stderr]    Compiling webgl_stdweb v0.3.0
[INFO] [stderr]     Checking blinds v0.1.6
[INFO] [stderr]     Checking quicksilver v0.4.0-alpha0.5
[INFO] [stderr]  Documenting maverick 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(exclusive_range_pattern)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(vec_remove_item)]
[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 `maverick`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name maverick 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 log=/opt/rustwide/target/debug/deps/liblog-69d9a7f018cb28c7.rmeta --extern quicksilver=/opt/rustwide/target/debug/deps/libquicksilver-db90619e6d1c21a7.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-114251c65ddd9aaa.rmeta --cap-lints=warn --crate-version 0.1.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "87a544565069c569d04e7f2b2805b81609a7cbae2c736595983dcd6847598a72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87a544565069c569d04e7f2b2805b81609a7cbae2c736595983dcd6847598a72", kill_on_drop: false }`
[INFO] [stdout] 87a544565069c569d04e7f2b2805b81609a7cbae2c736595983dcd6847598a72