[INFO] fetching crate ch569-hal 0.0.1...
[INFO] documenting ch569-hal-0.0.1 against 1.76.0 for beta-1.77-rustdoc-1
[INFO] extracting crate ch569-hal 0.0.1 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate ch569-hal 0.0.1 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] removed /workspace/builds/worker-4-tc1/source/.cargo/config.toml
[INFO] started tweaking crates.io crate ch569-hal 0.0.1
[INFO] finished tweaking crates.io crate ch569-hal 0.0.1
[INFO] tweaked toml for crates.io crate ch569-hal 0.0.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate ch569-hal 0.0.1 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]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded riscv-rt-macros v0.2.0
[INFO] [stderr]   Downloaded riscv-target v0.1.2
[INFO] [stderr]   Downloaded riscv v0.8.0
[INFO] [stderr]   Downloaded bare-metal v1.0.0
[INFO] [stderr]   Downloaded r0 v1.0.0
[INFO] [stderr]   Downloaded riscv v0.9.0
[INFO] [stderr]   Downloaded nb v1.0.0
[INFO] [stderr]   Downloaded riscv-rt v0.9.0
[INFO] [stderr]   Downloaded ch569-pac v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 93b8445e1ab417931e45d324ffa9b7d09d11b006f930a287867322dd50cd47c0
[INFO] running `Command { std: "docker" "start" "-a" "93b8445e1ab417931e45d324ffa9b7d09d11b006f930a287867322dd50cd47c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "93b8445e1ab417931e45d324ffa9b7d09d11b006f930a287867322dd50cd47c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93b8445e1ab417931e45d324ffa9b7d09d11b006f930a287867322dd50cd47c0", kill_on_drop: false }`
[INFO] [stdout] 93b8445e1ab417931e45d324ffa9b7d09d11b006f930a287867322dd50cd47c0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 63effe3f922f1a4173dd3d5507bcb0695b4a0ea29ac1591157d6404d51742736
[INFO] running `Command { std: "docker" "start" "-a" "63effe3f922f1a4173dd3d5507bcb0695b4a0ea29ac1591157d6404d51742736", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]     Checking nb v1.0.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling unicode-ident v1.0.5
[INFO] [stderr]    Compiling regex-syntax v0.6.27
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]     Checking bit_field v0.10.1
[INFO] [stderr]     Checking bare-metal v1.0.0
[INFO] [stderr]    Compiling syn v1.0.102
[INFO] [stderr]    Compiling riscv v0.8.0
[INFO] [stderr]    Compiling riscv v0.9.0
[INFO] [stderr]    Compiling ch569-pac v0.1.0
[INFO] [stderr]    Compiling ch569-hal v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking r0 v1.0.0
[INFO] [stderr]     Checking critical-section v1.1.1
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]     Checking vcell v0.1.3
[INFO] [stderr]     Checking embedded-hal v0.2.7
[INFO] [stderr]    Compiling aho-corasick v0.7.19
[INFO] [stderr]    Compiling regex v1.6.0
[INFO] [stderr]    Compiling riscv-target v0.1.2
[INFO] [stderr]    Compiling riscv-rt v0.9.0
[INFO] [stderr]    Compiling riscv-rt-macros v0.2.0
[INFO] [stderr]  Documenting ch569-hal v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(naked_functions)]
[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 `ch569-hal`
[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 ch569_hal src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=88b18ffc60940da6 -L dependency=/opt/rustwide/target/debug/deps --extern ch569_pac=/opt/rustwide/target/debug/deps/libch569_pac-bf95a377578c35b5.rmeta --extern critical_section=/opt/rustwide/target/debug/deps/libcritical_section-1369b7e707fb8565.rmeta --extern embedded_hal=/opt/rustwide/target/debug/deps/libembedded_hal-4719f7cd400e0808.rmeta --extern riscv=/opt/rustwide/target/debug/deps/libriscv-066547cfbde395d0.rmeta --extern riscv_rt=/opt/rustwide/target/debug/deps/libriscv_rt-8178153af5c4158b.rmeta --cap-lints=warn --crate-version 0.0.1` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "63effe3f922f1a4173dd3d5507bcb0695b4a0ea29ac1591157d6404d51742736", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63effe3f922f1a4173dd3d5507bcb0695b4a0ea29ac1591157d6404d51742736", kill_on_drop: false }`
[INFO] [stdout] 63effe3f922f1a4173dd3d5507bcb0695b4a0ea29ac1591157d6404d51742736
