[INFO] cloning repository https://github.com/gallowstree/tsurust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gallowstree/tsurust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgallowstree%2Ftsurust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgallowstree%2Ftsurust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9856916d1d08e8a2be95dd13e91d4ae614c1997a
[INFO] documenting gallowstree/tsurust 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%2Fgallowstree%2Ftsurust" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gallowstree/tsurust 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/gallowstree/tsurust
[INFO] finished tweaking git repo https://github.com/gallowstree/tsurust
[INFO] tweaked toml for git repo https://github.com/gallowstree/tsurust written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/gallowstree/tsurust 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 gilrs-core v0.2.2
[INFO] [stderr]   Downloaded libloading v0.5.1
[INFO] [stderr]   Downloaded string_cache_codegen v0.3.1
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[INFO] [stderr]   Downloaded ncollide2d v0.18.4
[INFO] [stderr]   Downloaded image v0.21.1
[INFO] [stderr]   Downloaded lyon v0.13.1
[INFO] [stderr]   Downloaded ena v0.11.0
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[INFO] [stderr]   Downloaded nalgebra v0.17.3
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] 3ef79c3318d26d7673ab9181ec17d0afdd37e7b17d16dc731e96e94867bf1163
[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" "3ef79c3318d26d7673ab9181ec17d0afdd37e7b17d16dc731e96e94867bf1163", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3ef79c3318d26d7673ab9181ec17d0afdd37e7b17d16dc731e96e94867bf1163", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ef79c3318d26d7673ab9181ec17d0afdd37e7b17d16dc731e96e94867bf1163", kill_on_drop: false }`
[INFO] [stdout] 3ef79c3318d26d7673ab9181ec17d0afdd37e7b17d16dc731e96e94867bf1163
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] c739e1c6c7460aae7ba9bcb6fb5b94859c11a60f12630aa776668e8febb99651
[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" "c739e1c6c7460aae7ba9bcb6fb5b94859c11a60f12630aa776668e8febb99651", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.57
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[INFO] [stderr]    Compiling syn v0.15.34
[INFO] [stderr]    Compiling xml-rs v0.8.0
[INFO] [stderr]    Compiling arrayvec v0.4.11
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[INFO] [stderr]     Checking rustc-demangle v0.1.15
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[INFO] [stderr]     Checking downcast-rs v1.0.4
[INFO] [stderr]    Compiling num-complex v0.2.1
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[INFO] [stderr]     Checking same-file v1.0.4
[INFO] [stderr]    Compiling nix v0.11.0
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[INFO] [stderr]    Compiling serde v1.0.92
[INFO] [stderr]     Checking approx v0.1.1
[INFO] [stderr]     Checking uuid v0.7.4
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[INFO] [stderr]    Compiling synstructure v0.10.2
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[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling serde_derive v1.0.92
[INFO] [stderr]    Compiling derivative v1.0.2
[INFO] [stderr]     Checking failure v0.1.5
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[INFO] [stderr]     Checking euclid v0.19.8
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[INFO] [stderr]     Checking lyon_geom v0.12.6
[INFO] [stderr]     Checking tiff v0.2.2
[INFO] [stderr]     Checking image v0.21.1
[INFO] [stderr]     Checking lyon_path v0.13.1
[INFO] [stderr]     Checking lyon_svg v0.13.0
[INFO] [stderr]     Checking lyon_algorithms v0.13.1
[INFO] [stderr]     Checking lyon_tessellation v0.13.1
[INFO] [stderr]     Checking lyon_extra v0.13.0
[INFO] [stderr]     Checking lyon v0.13.1
[INFO] [stderr]     Checking smithay-client-toolkit v0.4.5
[INFO] [stderr]     Checking winit v0.19.1
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[INFO] [stderr]     Checking glutin v0.21.0
[INFO] [stderr]     Checking serde_json v1.0.39
[INFO] [stderr]     Checking quicksilver v0.3.12
[INFO] [stderr]  Documenting tsurust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(impl_trait_in_bindings)]
[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 `tsurust`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name tsurust 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 arrayvec=/opt/rustwide/target/debug/deps/libarrayvec-58b36d29c4377d58.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-801b5e37e6f3530b.rmeta --extern quicksilver=/opt/rustwide/target/debug/deps/libquicksilver-272075e01df3e4f9.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-a51efc6876b9f4b5.rmeta --cap-lints=warn --crate-version 0.1.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "c739e1c6c7460aae7ba9bcb6fb5b94859c11a60f12630aa776668e8febb99651", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c739e1c6c7460aae7ba9bcb6fb5b94859c11a60f12630aa776668e8febb99651", kill_on_drop: false }`
[INFO] [stdout] c739e1c6c7460aae7ba9bcb6fb5b94859c11a60f12630aa776668e8febb99651