[INFO] cloning repository https://github.com/kitlith/ao3rss_rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kitlith/ao3rss_rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkitlith%2Fao3rss_rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkitlith%2Fao3rss_rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 820b6469f292c8fd641267590caa433a4a2f2879
[INFO] documenting kitlith/ao3rss_rs against 1.61.0 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkitlith%2Fao3rss_rs" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kitlith/ao3rss_rs on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-3/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/kitlith/ao3rss_rs
[INFO] finished tweaking git repo https://github.com/kitlith/ao3rss_rs
[INFO] tweaked toml for git repo https://github.com/kitlith/ao3rss_rs written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/kitlith/ao3rss_rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/SergioBenitez/Pear.git`
[INFO] [stderr]     Updating git repository `https://github.com/SergioBenitez/proc-macro2-diagnostics.git`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded const_fn v0.4.2
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[INFO] [stderr]   Downloaded quick-xml v0.17.2
[INFO] [stderr]   Downloaded rss v1.9.0
[INFO] [stderr]   Downloaded uncased v0.9.2
[INFO] [stderr]   Downloaded ubyte v0.10.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 67ac8bbc994c8bf7e2ecd20e4b8bd6401232c5b558892048c77e7b4211789a24
[INFO] running `Command { std: "docker" "start" "-a" "67ac8bbc994c8bf7e2ecd20e4b8bd6401232c5b558892048c77e7b4211789a24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "67ac8bbc994c8bf7e2ecd20e4b8bd6401232c5b558892048c77e7b4211789a24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "67ac8bbc994c8bf7e2ecd20e4b8bd6401232c5b558892048c77e7b4211789a24", kill_on_drop: false }`
[INFO] [stdout] 67ac8bbc994c8bf7e2ecd20e4b8bd6401232c5b558892048c77e7b4211789a24
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] de2cbfdebd5c59160a122ee1d09d8a8d86a9c06356a6d98e079de95f41334648
[INFO] running `Command { std: "docker" "start" "-a" "de2cbfdebd5c59160a122ee1d09d8a8d86a9c06356a6d98e079de95f41334648", kill_on_drop: false }`
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[INFO] [stderr]    Compiling pear_codegen v0.2.0-dev (https://github.com/SergioBenitez/Pear.git?rev=4b68055#4b680556)
[INFO] [stderr]    Compiling ref-cast-impl v1.0.2
[INFO] [stderr]    Compiling html5ever v0.25.1
[INFO] [stderr]    Compiling devise_codegen v0.3.0 (https://github.com/SergioBenitez/Devise.git?rev=1e42a2691#1e42a269)
[INFO] [stderr]    Compiling async-trait v0.1.41
[INFO] [stderr]    Compiling async-stream-impl v0.3.0
[INFO] [stderr]    Compiling darling_macro v0.10.2
[INFO] [stderr]    Compiling ref-cast v1.0.2
[INFO] [stderr]     Checking tokio v0.2.22
[INFO] [stderr]     Checking time-macros v0.1.1
[INFO] [stderr]    Compiling devise v0.3.0 (https://github.com/SergioBenitez/Devise.git?rev=1e42a2691#1e42a269)
[INFO] [stderr]     Checking async-stream v0.3.0
[INFO] [stderr]    Compiling darling v0.10.2
[INFO] [stderr]    Compiling pear v0.2.0-dev (https://github.com/SergioBenitez/Pear.git?rev=4b68055#4b680556)
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[INFO] [stderr]     Checking pin-project v0.4.25
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[INFO] [stderr]     Checking serde v1.0.116
[INFO] [stderr]     Checking rss v1.9.0
[INFO] [stderr]     Checking h2 v0.2.6
[INFO] [stderr]     Checking futures-executor v0.3.5
[INFO] [stderr]     Checking futures v0.3.5
[INFO] [stderr]     Checking string_cache v0.8.0
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]     Checking serde_urlencoded v0.6.1
[INFO] [stderr]     Checking cookie_store v0.12.0
[INFO] [stderr]    Compiling markup5ever v0.10.0
[INFO] [stderr]     Checking hyper v0.13.8
[INFO] [stderr]     Checking xml5ever v0.16.1
[INFO] [stderr]     Checking hyper-tls v0.4.3
[INFO] [stderr]     Checking markup5ever_rcdom v0.1.0
[INFO] [stderr]     Checking select v0.5.0
[INFO] [stderr]     Checking reqwest v0.10.8
[INFO] [stderr]    Compiling rocket_codegen v0.5.0-dev (https://github.com/SergioBenitez/Rocket#1369dc47)
[INFO] [stderr]  Documenting ao3rss v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro_hygiene, decl_macro)]
[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 `ao3rss`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name ao3rss src/main.rs -o /opt/rustwide/target/doc --cfg 'feature="async-stream"' --cfg 'feature="default"' --cfg 'feature="keepalive"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=5bac473482e21f8b -L dependency=/opt/rustwide/target/debug/deps --extern async_stream=/opt/rustwide/target/debug/deps/libasync_stream-6eb6e371ac4cd8a2.rmeta --extern chrono=/opt/rustwide/target/debug/deps/libchrono-c9bada1e8368e45b.rmeta --extern futures_util=/opt/rustwide/target/debug/deps/libfutures_util-3a97f5847f0ae49b.rmeta --extern hyper=/opt/rustwide/target/debug/deps/libhyper-eeeed21561e42e9e.rmeta --extern reqwest=/opt/rustwide/target/debug/deps/libreqwest-925bad9b98c0cce9.rmeta --extern rocket=/opt/rustwide/target/debug/deps/librocket-e505b1543da9fa8a.rmeta --extern rss=/opt/rustwide/target/debug/deps/librss-dcd86c9943d51778.rmeta --extern select=/opt/rustwide/target/debug/deps/libselect-cf4e9d20af334324.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-91442c977d46cff0.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-29f003fc6275ef50.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "de2cbfdebd5c59160a122ee1d09d8a8d86a9c06356a6d98e079de95f41334648", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de2cbfdebd5c59160a122ee1d09d8a8d86a9c06356a6d98e079de95f41334648", kill_on_drop: false }`
[INFO] [stdout] de2cbfdebd5c59160a122ee1d09d8a8d86a9c06356a6d98e079de95f41334648