[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 beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkitlith%2Fao3rss_rs" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kitlith/ao3rss_rs 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 }`
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[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-13/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" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/SergioBenitez/Pear.git`
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[INFO] running `Command { std: "docker" "start" "-a" "d5c9bbd9d8ea03bc8ef07ddbcfbdaa7ecbf85a2e309632c14df4892970f78211", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d5c9bbd9d8ea03bc8ef07ddbcfbdaa7ecbf85a2e309632c14df4892970f78211", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5c9bbd9d8ea03bc8ef07ddbcfbdaa7ecbf85a2e309632c14df4892970f78211", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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 }`
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[INFO] [stderr]    Compiling markup5ever v0.10.0
[INFO] [stderr]     Checking xml5ever v0.16.1
[INFO] [stderr]     Checking hyper-tls v0.4.3
[INFO] [stderr]     Checking reqwest v0.10.8
[INFO] [stderr]     Checking markup5ever_rcdom v0.1.0
[INFO] [stderr]     Checking select v0.5.0
[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 beta 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 --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern async_stream=/opt/rustwide/target/debug/deps/libasync_stream-66e303f642f34704.rmeta --extern chrono=/opt/rustwide/target/debug/deps/libchrono-9e58041f80e72e4c.rmeta --extern futures_util=/opt/rustwide/target/debug/deps/libfutures_util-367e4cf1d9dffbd8.rmeta --extern hyper=/opt/rustwide/target/debug/deps/libhyper-066afcf3017991b0.rmeta --extern reqwest=/opt/rustwide/target/debug/deps/libreqwest-7f7005666f0e23f0.rmeta --extern rocket=/opt/rustwide/target/debug/deps/librocket-fd07649c77d21f02.rmeta --extern rss=/opt/rustwide/target/debug/deps/librss-91b029fbc17f839f.rmeta --extern select=/opt/rustwide/target/debug/deps/libselect-de3f3e31735497b0.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-10d9a04d756f0045.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-89afdef468ae4e04.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "6ae14027b8cf0d0e4ba96cf50e50d1fdb2343123f718c9d3ad0fd138644e5aab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ae14027b8cf0d0e4ba96cf50e50d1fdb2343123f718c9d3ad0fd138644e5aab", kill_on_drop: false }`
[INFO] [stdout] 6ae14027b8cf0d0e4ba96cf50e50d1fdb2343123f718c9d3ad0fd138644e5aab
