[INFO] fetching crate d3ne 0.7.0...
[INFO] documenting d3ne-0.7.0 against 1.76.0 for beta-1.77-rustdoc-1
[INFO] extracting crate d3ne 0.7.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate d3ne 0.7.0 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 crates.io crate d3ne 0.7.0
[INFO] finished tweaking crates.io crate d3ne 0.7.0
[INFO] tweaked toml for crates.io crate d3ne 0.7.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[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] 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] d8fe4db1b74afd5abb567b53aef1fa1c8eb8102a9304fb73ef5dedebcd70ceed
[INFO] running `Command { std: "docker" "start" "-a" "d8fe4db1b74afd5abb567b53aef1fa1c8eb8102a9304fb73ef5dedebcd70ceed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d8fe4db1b74afd5abb567b53aef1fa1c8eb8102a9304fb73ef5dedebcd70ceed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8fe4db1b74afd5abb567b53aef1fa1c8eb8102a9304fb73ef5dedebcd70ceed", kill_on_drop: false }`
[INFO] [stdout] d8fe4db1b74afd5abb567b53aef1fa1c8eb8102a9304fb73ef5dedebcd70ceed
[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] 63fa10b519e2a5730a3f28f3a7f4fa98f5d8faf4a88c2c667995c767a3868516
[INFO] running `Command { std: "docker" "start" "-a" "63fa10b519e2a5730a3f28f3a7f4fa98f5d8faf4a88c2c667995c767a3868516", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.78
[INFO] [stderr]    Compiling serde v1.0.196
[INFO] [stderr]    Compiling thiserror v1.0.57
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling serde_derive v1.0.196
[INFO] [stderr]    Compiling thiserror-impl v1.0.57
[INFO] [stderr]     Checking serde_json v1.0.113
[INFO] [stderr]  Documenting d3ne v0.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(unboxed_closures)]
[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 `d3ne`
[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 lib --crate-name d3ne src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=25d57719cbaf381f -L dependency=/opt/rustwide/target/debug/deps --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-d4cbb8ebf8c675b1.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-0eedd91a8b2e7c2c.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-7ddb81ea6f930908.rmeta --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-b049f132ddfc695e.rmeta --cap-lints=warn --crate-version 0.7.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "63fa10b519e2a5730a3f28f3a7f4fa98f5d8faf4a88c2c667995c767a3868516", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63fa10b519e2a5730a3f28f3a7f4fa98f5d8faf4a88c2c667995c767a3868516", kill_on_drop: false }`
[INFO] [stdout] 63fa10b519e2a5730a3f28f3a7f4fa98f5d8faf4a88c2c667995c767a3868516
