[INFO] fetching crate eyros 3.0.0...
[INFO] documenting eyros-3.0.0 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate eyros 3.0.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate eyros 3.0.0 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 crates.io crate eyros 3.0.0
[INFO] finished tweaking crates.io crate eyros 3.0.0
[INFO] tweaked toml for crates.io crate eyros 3.0.0 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate eyros 3.0.0 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 mkdirp v1.0.0
[INFO] [stderr]   Downloaded desert v1.0.3
[INFO] [stderr]   Downloaded random-access-storage v4.0.0
[INFO] [stderr]   Downloaded lru v0.4.4
[INFO] [stderr]   Downloaded random-access-disk v2.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 296d36f2229d1ee4812ecf462b3670b9caac4447c07de3d0310d1c066111a5d9
[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" "296d36f2229d1ee4812ecf462b3670b9caac4447c07de3d0310d1c066111a5d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "296d36f2229d1ee4812ecf462b3670b9caac4447c07de3d0310d1c066111a5d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "296d36f2229d1ee4812ecf462b3670b9caac4447c07de3d0310d1c066111a5d9", kill_on_drop: false }`
[INFO] [stdout] 296d36f2229d1ee4812ecf462b3670b9caac4447c07de3d0310d1c066111a5d9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 8ebc7e71c074a879b9867e9208d62150f87d27c3e7496f71b6817729b0b8f218
[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" "8ebc7e71c074a879b9867e9208d62150f87d27c3e7496f71b6817729b0b8f218", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.34
[INFO] [stderr]    Compiling bumpalo v3.3.0
[INFO] [stderr]     Checking parking v1.0.4
[INFO] [stderr]     Checking mkdirp v1.0.0
[INFO] [stderr]    Compiling hashbrown v0.6.3
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]     Checking socket2 v0.3.12
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking backtrace-sys v0.1.32
[INFO] [stderr]     Checking backtrace v0.3.44
[INFO] [stderr]    Compiling const-random-macro v0.1.8
[INFO] [stderr]     Checking const-random v0.1.8
[INFO] [stderr]     Checking ahash v0.2.18
[INFO] [stderr]     Checking lru v0.4.4
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.67
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling pin-project-internal v0.4.22
[INFO] [stderr]    Compiling futures-macro v0.3.5
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]    Compiling async-trait v0.1.30
[INFO] [stderr]    Compiling async-attributes v1.1.1
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.67
[INFO] [stderr]     Checking failure v0.1.6
[INFO] [stderr]     Checking desert v1.0.3
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.67
[INFO] [stderr]     Checking random-access-storage v4.0.0
[INFO] [stderr]     Checking wasm-bindgen v0.2.67
[INFO] [stderr]     Checking pin-project v0.4.22
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking js-sys v0.3.41
[INFO] [stderr]     Checking blocking v0.4.6
[INFO] [stderr]     Checking futures-executor v0.3.5
[INFO] [stderr]     Checking web-sys v0.3.39
[INFO] [stderr]     Checking futures v0.3.5
[INFO] [stderr]     Checking smol v0.1.18
[INFO] [stderr]     Checking gloo-timers v0.2.1
[INFO] [stderr]     Checking futures-timer v3.0.2
[INFO] [stderr]     Checking async-std v1.6.2
[INFO] [stderr]     Checking random-access-disk v2.0.0
[INFO] [stderr]  Documenting eyros v3.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]    --> src/lib.rs:162:1
[INFO] [stdout]     |
[INFO] [stdout] 162 | #![feature(nll)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]    --> src/lib.rs:163:1
[INFO] [stdout]     |
[INFO] [stdout] 163 | #![feature(async_closure)]
[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 `eyros`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type rlib --crate-type cdylib --crate-name eyros src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="2d"' --cfg 'feature="3d"' --cfg 'feature="4d"' --cfg 'feature="default"' --cfg 'feature="random-access-disk"' --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern async_std=/opt/rustwide/target/debug/deps/libasync_std-3047171a507ca314.rmeta --extern async_trait=/opt/rustwide/target/debug/deps/libasync_trait-9ea31a72a47c711e.so --extern desert=/opt/rustwide/target/debug/deps/libdesert-7c47d64a7d7f31c9.rmeta --extern failure=/opt/rustwide/target/debug/deps/libfailure-fa245601852a944b.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-eba2e3c9801adbcc.rmeta --extern futures_core=/opt/rustwide/target/debug/deps/libfutures_core-25a144c7672517b1.rmeta --extern lru=/opt/rustwide/target/debug/deps/liblru-4e0001771790902a.rmeta --extern pin_project_lite=/opt/rustwide/target/debug/deps/libpin_project_lite-ecc145af35dcdc4f.rmeta --extern pin_utils=/opt/rustwide/target/debug/deps/libpin_utils-3d51a938ac21e975.rmeta --extern random_access_disk=/opt/rustwide/target/debug/deps/librandom_access_disk-43f3051c98c86250.rmeta --extern random_access_storage=/opt/rustwide/target/debug/deps/librandom_access_storage-3a9253b498244a1c.rmeta --cap-lints=warn --crate-version 3.0.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "8ebc7e71c074a879b9867e9208d62150f87d27c3e7496f71b6817729b0b8f218", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ebc7e71c074a879b9867e9208d62150f87d27c3e7496f71b6817729b0b8f218", kill_on_drop: false }`
[INFO] [stdout] 8ebc7e71c074a879b9867e9208d62150f87d27c3e7496f71b6817729b0b8f218