[INFO] cloning repository https://github.com/djanatyn/fetch-followers
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/djanatyn/fetch-followers" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdjanatyn%2Ffetch-followers", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdjanatyn%2Ffetch-followers'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a427e9ace9c12945b4d736a887729b925a2f6993
[INFO] documenting djanatyn/fetch-followers against beta-2023-04-20 for beta-1.70-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdjanatyn%2Ffetch-followers" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/djanatyn/fetch-followers on toolchain beta-2023-04-20
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-04-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/djanatyn/fetch-followers
[INFO] finished tweaking git repo https://github.com/djanatyn/fetch-followers
[INFO] tweaked toml for git repo https://github.com/djanatyn/fetch-followers written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/djanatyn/fetch-followers 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" "+beta-2023-04-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded egg-mode v0.16.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "+beta-2023-04-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1c31e79bd507f7f07b88212a67d5ad775162583c1ce5d5457fe9ac0ce31c86f1
[INFO] running `Command { std: "docker" "start" "-a" "1c31e79bd507f7f07b88212a67d5ad775162583c1ce5d5457fe9ac0ce31c86f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1c31e79bd507f7f07b88212a67d5ad775162583c1ce5d5457fe9ac0ce31c86f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c31e79bd507f7f07b88212a67d5ad775162583c1ce5d5457fe9ac0ce31c86f1", kill_on_drop: false }`
[INFO] [stdout] 1c31e79bd507f7f07b88212a67d5ad775162583c1ce5d5457fe9ac0ce31c86f1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "+beta-2023-04-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5c342a1d54d86541f0bf1735d2ddab4d83525cbaef26b9e44bdc5de1d7d4e1be
[INFO] running `Command { std: "docker" "start" "-a" "5c342a1d54d86541f0bf1735d2ddab4d83525cbaef26b9e44bdc5de1d7d4e1be", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.121
[INFO] [stderr]     Checking cfg-if v1.0.0
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[INFO] [stderr]     Checking sharded-slab v0.1.4
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[INFO] [stderr]     Checking ansi_term v0.12.1
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[INFO] [stderr]     Checking mime v0.3.16
[INFO] [stderr]     Checking rusqlite v0.27.0
[INFO] [stderr]    Compiling unicode-linebreak v0.1.2
[INFO] [stderr]     Checking tracing-subscriber v0.3.9
[INFO] [stderr]    Compiling futures-macro v0.3.21
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.20
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling miette-derive v4.2.1
[INFO] [stderr]    Compiling derive_more v0.99.17
[INFO] [stderr]     Checking tokio v1.17.0
[INFO] [stderr]     Checking textwrap v0.14.2
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Checking tracing v0.1.32
[INFO] [stderr]     Checking miette v4.2.1
[INFO] [stderr]     Checking futures-executor v0.3.21
[INFO] [stderr]     Checking futures v0.3.21
[INFO] [stderr]     Checking tokio-util v0.6.9
[INFO] [stderr]     Checking tokio-native-tls v0.3.0
[INFO] [stderr]     Checking h2 v0.3.12
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking envy v0.4.2
[INFO] [stderr]     Checking hyper v0.14.18
[INFO] [stderr]     Checking hyper-tls v0.5.0
[INFO] [stderr]     Checking egg-mode v0.16.0
[INFO] [stderr]  Documenting fetch-followers 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(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 `fetch-followers`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name fetch_followers 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=e7f148932302badd -L dependency=/opt/rustwide/target/debug/deps --extern chrono=/opt/rustwide/target/debug/deps/libchrono-86939b76709d63a1.rmeta --extern egg_mode=/opt/rustwide/target/debug/deps/libegg_mode-8cf88e8903bcb179.rmeta --extern envy=/opt/rustwide/target/debug/deps/libenvy-a1f8cc703a243017.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-b996b8d720ba24ac.rmeta --extern miette=/opt/rustwide/target/debug/deps/libmiette-231352fabf45ee97.rmeta --extern rusqlite=/opt/rustwide/target/debug/deps/librusqlite-f6297da0e3a0c058.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-951eb5d71b669b02.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-a31dd92967ee744f.rmeta --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-0256188b409249cd.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-78f6eb7e4961bf0f.rmeta --extern tracing=/opt/rustwide/target/debug/deps/libtracing-bdf546e78ef0037a.rmeta --extern tracing_subscriber=/opt/rustwide/target/debug/deps/libtracing_subscriber-ca2bb8f3d13062d6.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "5c342a1d54d86541f0bf1735d2ddab4d83525cbaef26b9e44bdc5de1d7d4e1be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c342a1d54d86541f0bf1735d2ddab4d83525cbaef26b9e44bdc5de1d7d4e1be", kill_on_drop: false }`
[INFO] [stdout] 5c342a1d54d86541f0bf1735d2ddab4d83525cbaef26b9e44bdc5de1d7d4e1be
