[INFO] fetching crate discord-retention-bot 1.0.2...
[INFO] documenting discord-retention-bot-1.0.2 against 1.69.0 for beta-1.70-rustdoc-1
[INFO] extracting crate discord-retention-bot 1.0.2 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate discord-retention-bot 1.0.2 on toolchain 1.69.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate discord-retention-bot 1.0.2
[INFO] finished tweaking crates.io crate discord-retention-bot 1.0.2
[INFO] tweaked toml for crates.io crate discord-retention-bot 1.0.2 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate crates.io crate discord-retention-bot 1.0.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wasm-bindgen-test v0.3.19
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ae0fe4cd490f284928d32b8b65035e42eee8d1c9263c4214d82fe6607bece495
[INFO] running `Command { std: "docker" "start" "-a" "ae0fe4cd490f284928d32b8b65035e42eee8d1c9263c4214d82fe6607bece495", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ae0fe4cd490f284928d32b8b65035e42eee8d1c9263c4214d82fe6607bece495", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae0fe4cd490f284928d32b8b65035e42eee8d1c9263c4214d82fe6607bece495", kill_on_drop: false }`
[INFO] [stdout] ae0fe4cd490f284928d32b8b65035e42eee8d1c9263c4214d82fe6607bece495
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "RUSTFLAGS=--cap-lints=warn" "-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 288f3dcaf818b0ed78ecfa0f5431560619e016e491a9f6e74ab027cef69f5f23
[INFO] running `Command { std: "docker" "start" "-a" "288f3dcaf818b0ed78ecfa0f5431560619e016e491a9f6e74ab027cef69f5f23", kill_on_drop: false }`
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[INFO] [stderr]    Compiling thiserror-impl v1.0.22
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[INFO] [stderr]     Checking hyper-rustls v0.21.0
[INFO] [stderr]     Checking reqwest v0.10.9
[INFO] [stderr]  Documenting discord-retention-bot v1.0.2 (/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(async_closure)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `discord-retention-bot`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name discord_retention_bot src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items '-Arustdoc::private-intra-doc-links' -C metadata=0ceb8b4be555f4f7 -L dependency=/opt/rustwide/target/debug/deps --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-140d99faf2cd080b.rmeta --extern chrono=/opt/rustwide/target/debug/deps/libchrono-d174c7e229ffc203.rmeta --extern dotenv=/opt/rustwide/target/debug/deps/libdotenv-cd86dd85a907a92e.rmeta --extern env_logger=/opt/rustwide/target/debug/deps/libenv_logger-6a042686c1c985f7.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-4eef96547a3fd491.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-380e63647726915e.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-78eb699a4c2f85ad.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-b87e40037377733b.rmeta --extern serenity=/opt/rustwide/target/debug/deps/libserenity-980541a45d9e9abe.rmeta --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-43ba7789d44fb249.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-33cbc605ccc98c36.rmeta --extern tokio_test=/opt/rustwide/target/debug/deps/libtokio_test-d1fbd086458f26c9.rmeta --cap-lints=warn --crate-version 1.0.2` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "288f3dcaf818b0ed78ecfa0f5431560619e016e491a9f6e74ab027cef69f5f23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "288f3dcaf818b0ed78ecfa0f5431560619e016e491a9f6e74ab027cef69f5f23", kill_on_drop: false }`
[INFO] [stdout] 288f3dcaf818b0ed78ecfa0f5431560619e016e491a9f6e74ab027cef69f5f23
