[INFO] fetching crate mcp320x 0.1.1...
[INFO] documenting mcp320x-0.1.1 against 1.76.0 for beta-1.77-rustdoc-1
[INFO] extracting crate mcp320x 0.1.1 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate mcp320x 0.1.1 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 mcp320x 0.1.1
[INFO] finished tweaking crates.io crate mcp320x 0.1.1
[INFO] tweaked toml for crates.io crate mcp320x 0.1.1 written to /workspace/builds/worker-5-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-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 37fe0fa88b5ab3fb2e9cbf8df70ab6ea42f49650e06c5d45e6985a1922942853
[INFO] running `Command { std: "docker" "start" "-a" "37fe0fa88b5ab3fb2e9cbf8df70ab6ea42f49650e06c5d45e6985a1922942853", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "37fe0fa88b5ab3fb2e9cbf8df70ab6ea42f49650e06c5d45e6985a1922942853", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37fe0fa88b5ab3fb2e9cbf8df70ab6ea42f49650e06c5d45e6985a1922942853", kill_on_drop: false }`
[INFO] [stdout] 37fe0fa88b5ab3fb2e9cbf8df70ab6ea42f49650e06c5d45e6985a1922942853
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] d8d0df729e13f67a8da95a90c2f5aba2e22ee0311d518eaaa628daa6e63fd599
[INFO] running `Command { std: "docker" "start" "-a" "d8d0df729e13f67a8da95a90c2f5aba2e22ee0311d518eaaa628daa6e63fd599", kill_on_drop: false }`
[INFO] [stderr]     Checking nb v1.1.0
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]     Checking embedded-hal v0.2.7
[INFO] [stderr]  Documenting mcp320x v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 41 | #![feature(unsize)]
[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 `mcp320x`
[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 --crate-type lib --crate-name mcp320x src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=22650cf60e8bc1fe -L dependency=/opt/rustwide/target/debug/deps --extern embedded_hal=/opt/rustwide/target/debug/deps/libembedded_hal-51135a9fa6abb0df.rmeta --cap-lints=warn --crate-version 0.1.1` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "d8d0df729e13f67a8da95a90c2f5aba2e22ee0311d518eaaa628daa6e63fd599", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8d0df729e13f67a8da95a90c2f5aba2e22ee0311d518eaaa628daa6e63fd599", kill_on_drop: false }`
[INFO] [stdout] d8d0df729e13f67a8da95a90c2f5aba2e22ee0311d518eaaa628daa6e63fd599
