[INFO] cloning repository https://github.com/MKindberg/linkbot
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MKindberg/linkbot" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMKindberg%2Flinkbot", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMKindberg%2Flinkbot'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d69bd3c5b1db318707e38b901fb448ed68af7ec1
[INFO] documenting MKindberg/linkbot against 1.76.0 for beta-1.77-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMKindberg%2Flinkbot" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MKindberg/linkbot on toolchain 1.76.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/MKindberg/linkbot
[INFO] finished tweaking git repo https://github.com/MKindberg/linkbot
[INFO] tweaked toml for git repo https://github.com/MKindberg/linkbot written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/MKindberg/linkbot 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" "+1.76.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded webpki v0.22.2
[INFO] [stderr]   Downloaded serenity v0.11.4
[INFO] [stderr]   Downloaded tokio v1.20.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f1f39c664200d4cabdfa1bbded25bbb0a8ad79a2c4453adaa2884c4263757185
[INFO] running `Command { std: "docker" "start" "-a" "f1f39c664200d4cabdfa1bbded25bbb0a8ad79a2c4453adaa2884c4263757185", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f1f39c664200d4cabdfa1bbded25bbb0a8ad79a2c4453adaa2884c4263757185", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1f39c664200d4cabdfa1bbded25bbb0a8ad79a2c4453adaa2884c4263757185", kill_on_drop: false }`
[INFO] [stdout] f1f39c664200d4cabdfa1bbded25bbb0a8ad79a2c4453adaa2884c4263757185
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1f2e43d17ca8bf85af70b81f803116acea71d3ce5b00f4bf421a4c864dd97da9
[INFO] running `Command { std: "docker" "start" "-a" "1f2e43d17ca8bf85af70b81f803116acea71d3ce5b00f4bf421a4c864dd97da9", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
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[INFO] [stderr]    Compiling proc-macro2 v1.0.40
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[INFO] [stderr]    Compiling syn v1.0.98
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[INFO] [stderr]     Checking futures-sink v0.3.21
[INFO] [stderr]    Compiling typenum v1.15.0
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[INFO] [stderr]    Compiling futures-util v0.3.21
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[INFO] [stderr]    Compiling unicase v2.6.0
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[INFO] [stderr]     Checking num_threads v0.1.6
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[INFO] [stderr]     Checking block-buffer v0.10.2
[INFO] [stderr]     Checking digest v0.10.3
[INFO] [stderr]     Checking ordered-float v2.10.0
[INFO] [stderr]     Checking sha-1 v0.10.0
[INFO] [stderr]     Checking futures v0.3.21
[INFO] [stderr]     Checking webpki v0.22.2
[INFO] [stderr]     Checking sct v0.7.0
[INFO] [stderr]     Checking webpki-roots v0.22.4
[INFO] [stderr]    Compiling tokio-macros v1.8.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.22
[INFO] [stderr]    Compiling thiserror-impl v1.0.31
[INFO] [stderr]     Checking thiserror v1.0.31
[INFO] [stderr]     Checking tracing v0.1.35
[INFO] [stderr]     Checking tokio-util v0.7.3
[INFO] [stderr]     Checking tokio-rustls v0.23.4
[INFO] [stderr]     Checking h2 v0.3.21
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking serde-value v0.7.0
[INFO] [stderr]     Checking time v0.3.11
[INFO] [stderr]     Checking tungstenite v0.17.3
[INFO] [stderr]     Checking async-tungstenite v0.17.2
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[INFO] [stderr]     Checking hyper-rustls v0.23.0
[INFO] [stderr]     Checking reqwest v0.11.11
[INFO] [stderr]  Documenting linkbot 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:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(iter_intersperse)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 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 `linkbot`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/1.76.0-x86_64-unknown-linux-gnu/bin/rustdoc --edition=2021 --crate-type bin --crate-name linkbot 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=545e8cff862f21d7 -L dependency=/opt/rustwide/target/debug/deps --extern rand=/opt/rustwide/target/debug/deps/librand-2e088726c0ac656d.rmeta --extern serenity=/opt/rustwide/target/debug/deps/libserenity-5d439480dc98f33f.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-7ff0a5487aeba606.rmeta --extern yaml_rust=/opt/rustwide/target/debug/deps/libyaml_rust-fd59bd8dba022357.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "1f2e43d17ca8bf85af70b81f803116acea71d3ce5b00f4bf421a4c864dd97da9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f2e43d17ca8bf85af70b81f803116acea71d3ce5b00f4bf421a4c864dd97da9", kill_on_drop: false }`
[INFO] [stdout] 1f2e43d17ca8bf85af70b81f803116acea71d3ce5b00f4bf421a4c864dd97da9
