[INFO] fetching crate yagii 0.1.3...
[INFO] documenting yagii-0.1.3 against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] extracting crate yagii 0.1.3 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate yagii 0.1.3 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate yagii 0.1.3
[INFO] finished tweaking crates.io crate yagii 0.1.3
[INFO] tweaked toml for crates.io crate yagii 0.1.3 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: the cargo feature `edition` has been stabilized in the 1.31 release and is no longer necessary to be listed in the manifest
[INFO] [stderr]   See https://doc.rust-lang.org/beta/cargo/reference/manifest.html#the-edition-field for more information about using this feature.
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2319db74e69ef4185a647e17e28b422a78e04204d5c0fea44eff2fc5aebc2551
[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" "2319db74e69ef4185a647e17e28b422a78e04204d5c0fea44eff2fc5aebc2551", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2319db74e69ef4185a647e17e28b422a78e04204d5c0fea44eff2fc5aebc2551", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2319db74e69ef4185a647e17e28b422a78e04204d5c0fea44eff2fc5aebc2551", kill_on_drop: false }`
[INFO] [stdout] 2319db74e69ef4185a647e17e28b422a78e04204d5c0fea44eff2fc5aebc2551
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dcb2694f1ae884fa9ff7b662af8d74d7a4204472e44080be2cc2b536df988d9e
[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" "dcb2694f1ae884fa9ff7b662af8d74d7a4204472e44080be2cc2b536df988d9e", kill_on_drop: false }`
[INFO] [stderr] warning: the cargo feature `edition` has been stabilized in the 1.31 release and is no longer necessary to be listed in the manifest
[INFO] [stderr]   See https://doc.rust-lang.org/beta/cargo/reference/manifest.html#the-edition-field for more information about using this feature.
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking approx v0.1.1
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]     Checking block-buffer v0.3.3
[INFO] [stderr]     Checking gif v0.10.3
[INFO] [stderr]     Checking generic-array v0.9.1
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling palette v0.4.1
[INFO] [stderr]     Checking jpeg-decoder v0.1.22
[INFO] [stderr]     Checking digest v0.7.6
[INFO] [stderr]     Checking png v0.12.0
[INFO] [stderr]     Checking sha3 v0.7.3
[INFO] [stderr]     Checking image v0.19.0
[INFO] [stderr]    Compiling palette_derive v0.4.1
[INFO] [stderr]  Documenting yagii v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning[E0705]: the feature `rust_2018_preview` is included in the Rust 2018 edition
[INFO] [stdout]   --> src/lib.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | #![feature(rust_2018_preview, const_fn)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]   --> src/lib.rs:21:31
[INFO] [stdout]    |
[INFO] [stdout] 21 | #![feature(rust_2018_preview, const_fn)]
[INFO] [stdout]    |                               ^^^^^^^^ feature has been removed
[INFO] [stdout]    |
[INFO] [stdout]    = note: split into finer-grained feature gates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:21:1
[INFO] [stdout]    |
[INFO] [stdout] 21 | #![feature(rust_2018_preview, const_fn)]
[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; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0557, E0705.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `yagii`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name yagii 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 digest=/opt/rustwide/target/debug/deps/libdigest-0a2a84e49495e8e3.rmeta --extern failure=/opt/rustwide/target/debug/deps/libfailure-69ff03e39094cbef.rmeta --extern image=/opt/rustwide/target/debug/deps/libimage-7443f27ab6ca7dd5.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-be8c314c6d97e413.rmeta --extern palette=/opt/rustwide/target/debug/deps/libpalette-6ca8fcce55088e00.rmeta --extern sha3=/opt/rustwide/target/debug/deps/libsha3-8e01134031436b98.rmeta --cap-lints=warn --crate-version 0.1.3` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "dcb2694f1ae884fa9ff7b662af8d74d7a4204472e44080be2cc2b536df988d9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dcb2694f1ae884fa9ff7b662af8d74d7a4204472e44080be2cc2b536df988d9e", kill_on_drop: false }`
[INFO] [stdout] dcb2694f1ae884fa9ff7b662af8d74d7a4204472e44080be2cc2b536df988d9e
