[INFO] fetching crate mcp25xx 0.1.0...
[INFO] documenting mcp25xx-0.1.0 against 1.76.0 for beta-1.77-rustdoc-1
[INFO] extracting crate mcp25xx 0.1.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate mcp25xx 0.1.0 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 mcp25xx 0.1.0
[INFO] finished tweaking crates.io crate mcp25xx 0.1.0
[INFO] tweaked toml for crates.io crate mcp25xx 0.1.0 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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded embedded-can v0.3.0
[INFO] [stderr]   Downloaded embedded-hal-mock v0.8.0
[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] 0bb24e8512487663cd508ede4aa41ef5a02302d557150d2e2d2b60fb64eb9821
[INFO] running `Command { std: "docker" "start" "-a" "0bb24e8512487663cd508ede4aa41ef5a02302d557150d2e2d2b60fb64eb9821", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0bb24e8512487663cd508ede4aa41ef5a02302d557150d2e2d2b60fb64eb9821", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0bb24e8512487663cd508ede4aa41ef5a02302d557150d2e2d2b60fb64eb9821", kill_on_drop: false }`
[INFO] [stdout] 0bb24e8512487663cd508ede4aa41ef5a02302d557150d2e2d2b60fb64eb9821
[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] 383c3c660e42a56f6ed7308d31f97b4170752ccbd76aa2b3bdfc187bf7db9de3
[INFO] running `Command { std: "docker" "start" "-a" "383c3c660e42a56f6ed7308d31f97b4170752ccbd76aa2b3bdfc187bf7db9de3", kill_on_drop: false }`
[INFO] [stderr]     Checking nb v1.1.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]     Checking embedded-can v0.3.0
[INFO] [stderr]     Checking embedded-hal v0.2.7
[INFO] [stderr]    Compiling modular-bitfield-impl v0.11.2
[INFO] [stderr]     Checking modular-bitfield v0.11.2
[INFO] [stderr]  Documenting mcp25xx v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:46:18
[INFO] [stdout]    |
[INFO] [stdout] 46 | #![cfg_attr(doc, feature(doc_cfg))]
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around const expression
[INFO] [stdout]   --> src/registers.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | /// Receive Buffer 0 Control Register
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_braces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around const expression
[INFO] [stdout]   --> src/registers.rs:39:1
[INFO] [stdout]    |
[INFO] [stdout] 39 | /// Receive Buffer 1 Control Register
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around const expression
[INFO] [stdout]    --> src/registers.rs:105:1
[INFO] [stdout]     |
[INFO] [stdout] 105 | /// Can Control Register
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around const expression
[INFO] [stdout]    --> src/registers.rs:162:1
[INFO] [stdout]     |
[INFO] [stdout] 162 | /// CAN Status Register
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around const expression
[INFO] [stdout]    --> src/registers.rs:229:1
[INFO] [stdout]     |
[INFO] [stdout] 229 | /// Configuration 1 Register
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around const expression
[INFO] [stdout]    --> src/registers.rs:242:1
[INFO] [stdout]     |
[INFO] [stdout] 242 | /// Configuration 2 Register
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around const expression
[INFO] [stdout]    --> src/registers.rs:279:1
[INFO] [stdout]     |
[INFO] [stdout] 279 | /// Configuration 3 Register
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around const expression
[INFO] [stdout]    --> src/registers.rs:297:1
[INFO] [stdout]     |
[INFO] [stdout] 297 | /// Data Length Code Register
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around const expression
[INFO] [stdout]    --> src/registers.rs:312:1
[INFO] [stdout]     |
[INFO] [stdout] 312 | /// Transmit Buffer 0 Control Register
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around const expression
[INFO] [stdout]    --> src/registers.rs:333:1
[INFO] [stdout]     |
[INFO] [stdout] 333 | /// Transmit Buffer 1 Control Register
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around const expression
[INFO] [stdout]    --> src/registers.rs:354:1
[INFO] [stdout]     |
[INFO] [stdout] 354 | /// Transmit Buffer 2 Control Register
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around const expression
[INFO] [stdout]    --> src/registers.rs:375:1
[INFO] [stdout]     |
[INFO] [stdout] 375 | /// Interrupt Enable Register
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around const expression
[INFO] [stdout]    --> src/registers.rs:398:1
[INFO] [stdout]     |
[INFO] [stdout] 398 | /// Interrupt Flag Register
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around const expression
[INFO] [stdout]    --> src/registers.rs:421:1
[INFO] [stdout]     |
[INFO] [stdout] 421 | /// Error Flag Register
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around const expression
[INFO] [stdout]    --> src/registers.rs:444:1
[INFO] [stdout]     |
[INFO] [stdout] 444 | /// RXnBF Pin Control and Status Register
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around const expression
[INFO] [stdout]    --> src/registers.rs:459:1
[INFO] [stdout]     |
[INFO] [stdout] 459 | /// TXnRTS Pin Control and Status Register
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around const expression
[INFO] [stdout]    --> src/registers.rs:506:1
[INFO] [stdout]     |
[INFO] [stdout] 506 | /// Read Status Response Bitfield
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error; 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `mcp25xx`
[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 mcp25xx src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=8b06ef9b00adb601 -L dependency=/opt/rustwide/target/debug/deps --extern embedded_can=/opt/rustwide/target/debug/deps/libembedded_can-44be74899deb5c17.rmeta --extern embedded_hal=/opt/rustwide/target/debug/deps/libembedded_hal-51135a9fa6abb0df.rmeta --extern modular_bitfield=/opt/rustwide/target/debug/deps/libmodular_bitfield-1b79536aae6212a1.rmeta --extern nb=/opt/rustwide/target/debug/deps/libnb-f14242706e23b566.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "383c3c660e42a56f6ed7308d31f97b4170752ccbd76aa2b3bdfc187bf7db9de3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "383c3c660e42a56f6ed7308d31f97b4170752ccbd76aa2b3bdfc187bf7db9de3", kill_on_drop: false }`
[INFO] [stdout] 383c3c660e42a56f6ed7308d31f97b4170752ccbd76aa2b3bdfc187bf7db9de3
