[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 1.54.0 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-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 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "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" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", 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] 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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2a97c5c8519876fa6a55776ffb66a36bc30a78026dbf7d7c47feb8329a1ea6dd
[INFO] running `Command { std: "docker" "start" "-a" "2a97c5c8519876fa6a55776ffb66a36bc30a78026dbf7d7c47feb8329a1ea6dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2a97c5c8519876fa6a55776ffb66a36bc30a78026dbf7d7c47feb8329a1ea6dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a97c5c8519876fa6a55776ffb66a36bc30a78026dbf7d7c47feb8329a1ea6dd", kill_on_drop: false }`
[INFO] [stdout] 2a97c5c8519876fa6a55776ffb66a36bc30a78026dbf7d7c47feb8329a1ea6dd
[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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6a6ee49de2bc4bcc24f7303ec02a61ab8ad7ea30c2a40344e46d4be651bb8c52
[INFO] running `Command { std: "docker" "start" "-a" "6a6ee49de2bc4bcc24f7303ec02a61ab8ad7ea30c2a40344e46d4be651bb8c52", kill_on_drop: false }`
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[INFO] [stderr]     Checking cookie_store v0.12.0
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[INFO] [stderr]    Compiling markup5ever v0.10.0
[INFO] [stderr]     Checking hyper-tls v0.4.3
[INFO] [stderr]     Checking reqwest v0.10.8
[INFO] [stderr]     Checking xml5ever v0.16.1
[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 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 --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern async_stream=/opt/rustwide/target/debug/deps/libasync_stream-1d02389474c31549.rmeta --extern chrono=/opt/rustwide/target/debug/deps/libchrono-229f5033cc7de1f0.rmeta --extern futures_util=/opt/rustwide/target/debug/deps/libfutures_util-fd5882b07188df9b.rmeta --extern hyper=/opt/rustwide/target/debug/deps/libhyper-118a0fc32e626532.rmeta --extern reqwest=/opt/rustwide/target/debug/deps/libreqwest-c3eb15dee22940f9.rmeta --extern rocket=/opt/rustwide/target/debug/deps/librocket-1af39c4bd2e19172.rmeta --extern rss=/opt/rustwide/target/debug/deps/librss-16a4787f414932d7.rmeta --extern select=/opt/rustwide/target/debug/deps/libselect-bc20aa35ff389021.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-5021afa97d28b223.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-5d5c546f3fb814ef.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "6a6ee49de2bc4bcc24f7303ec02a61ab8ad7ea30c2a40344e46d4be651bb8c52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a6ee49de2bc4bcc24f7303ec02a61ab8ad7ea30c2a40344e46d4be651bb8c52", kill_on_drop: false }`
[INFO] [stdout] 6a6ee49de2bc4bcc24f7303ec02a61ab8ad7ea30c2a40344e46d4be651bb8c52
