[INFO] fetching crate eyros 3.0.0...
[INFO] documenting eyros-3.0.0 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate eyros 3.0.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate eyros 3.0.0 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 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-6/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" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 9996a00af4e36931cba64a90c7fb5aab16148d007e475085b9efbe397215751e
[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" "9996a00af4e36931cba64a90c7fb5aab16148d007e475085b9efbe397215751e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9996a00af4e36931cba64a90c7fb5aab16148d007e475085b9efbe397215751e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9996a00af4e36931cba64a90c7fb5aab16148d007e475085b9efbe397215751e", kill_on_drop: false }`
[INFO] [stdout] 9996a00af4e36931cba64a90c7fb5aab16148d007e475085b9efbe397215751e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] e0560442806e07aab8d9478b670d834cb00b96364aaf01781e67af1090d710eb
[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" "e0560442806e07aab8d9478b670d834cb00b96364aaf01781e67af1090d710eb", 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] [stderr]    Compiling syn v1.0.34
[INFO] [stderr]    Compiling bumpalo v3.3.0
[INFO] [stderr]    Compiling proc-macro-nested v0.1.4
[INFO] [stderr]     Checking parking v1.0.4
[INFO] [stderr]    Compiling anyhow v1.0.31
[INFO] [stderr]     Checking mkdirp v1.0.0
[INFO] [stderr]     Checking futures-task v0.3.5
[INFO] [stderr]     Checking concurrent-queue v1.1.1
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking backtrace-sys v0.1.32
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking backtrace v0.3.44
[INFO] [stderr]    Compiling getrandom v0.1.14
[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 hashbrown v0.6.3
[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 async-trait v0.1.30
[INFO] [stderr]    Compiling failure_derive v0.1.6
[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]    Compiling wasm-bindgen-macro v0.2.67
[INFO] [stderr]     Checking desert v1.0.3
[INFO] [stderr]     Checking random-access-storage v4.0.0
[INFO] [stderr]     Checking pin-project v0.4.22
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking wasm-bindgen v0.2.67
[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 stable 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 stable 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-0735071f8e18c5ee.rmeta --extern async_trait=/opt/rustwide/target/debug/deps/libasync_trait-39b5d5d704896a7e.so --extern desert=/opt/rustwide/target/debug/deps/libdesert-cf41675eea79451c.rmeta --extern failure=/opt/rustwide/target/debug/deps/libfailure-57aae393596eb4b0.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-e2e18f584c85d254.rmeta --extern futures_core=/opt/rustwide/target/debug/deps/libfutures_core-6c5edd2d7cd8550a.rmeta --extern lru=/opt/rustwide/target/debug/deps/liblru-85c21af5b2180a56.rmeta --extern pin_project_lite=/opt/rustwide/target/debug/deps/libpin_project_lite-47a02f15e339df7a.rmeta --extern pin_utils=/opt/rustwide/target/debug/deps/libpin_utils-f9e49bc7e7f315e9.rmeta --extern random_access_disk=/opt/rustwide/target/debug/deps/librandom_access_disk-f6340ea4ac422494.rmeta --extern random_access_storage=/opt/rustwide/target/debug/deps/librandom_access_storage-72f2b93f281652df.rmeta --cap-lints=warn` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "e0560442806e07aab8d9478b670d834cb00b96364aaf01781e67af1090d710eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e0560442806e07aab8d9478b670d834cb00b96364aaf01781e67af1090d710eb", kill_on_drop: false }`
[INFO] [stdout] e0560442806e07aab8d9478b670d834cb00b96364aaf01781e67af1090d710eb