[INFO] fetching crate tudelft-quadrupel 2.1.0...
[INFO] documenting tudelft-quadrupel-2.1.0 against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate tudelft-quadrupel 2.1.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate tudelft-quadrupel 2.1.0 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-0-tc1/source/.cargo/config.toml
[INFO] removed /workspace/builds/worker-0-tc1/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate tudelft-quadrupel 2.1.0
[INFO] finished tweaking crates.io crate tudelft-quadrupel 2.1.0
[INFO] tweaked toml for crates.io crate tudelft-quadrupel 2.1.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "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" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded alloc-cortex-m v0.4.4
[INFO] [stderr]   Downloaded nrf51-hal v0.16.0
[INFO] [stderr]   Downloaded nrf51-pac v0.12.2
[INFO] [stderr]   Downloaded ringbuffer v0.12.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ebd87b032b70e8edbc46ddd0dbb795a109c31e5af7913fb0048741f94446f23c
[INFO] running `Command { std: "docker" "start" "-a" "ebd87b032b70e8edbc46ddd0dbb795a109c31e5af7913fb0048741f94446f23c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ebd87b032b70e8edbc46ddd0dbb795a109c31e5af7913fb0048741f94446f23c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ebd87b032b70e8edbc46ddd0dbb795a109c31e5af7913fb0048741f94446f23c", kill_on_drop: false }`
[INFO] [stdout] ebd87b032b70e8edbc46ddd0dbb795a109c31e5af7913fb0048741f94446f23c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+1.75.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4846f83385b3c513e63d2ced2dc3b5a09a258497f50a6bd22e1b30449ff5a7d9
[INFO] running `Command { std: "docker" "start" "-a" "4846f83385b3c513e63d2ced2dc3b5a09a258497f50a6bd22e1b30449ff5a7d9", kill_on_drop: false }`
[INFO] [stderr]    Compiling cortex-m v0.7.7
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking nb v1.1.0
[INFO] [stderr]    Compiling cortex-m-rt v0.7.3
[INFO] [stderr]     Checking vcell v0.1.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.76
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking bare-metal v0.2.5
[INFO] [stderr]     Checking volatile-register v0.2.2
[INFO] [stderr]    Compiling az v1.2.1
[INFO] [stderr]    Compiling typenum v1.17.0
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]     Checking embedded-hal v0.2.7
[INFO] [stderr]     Checking bitfield v0.13.2
[INFO] [stderr]    Compiling nrf51-pac v0.12.2
[INFO] [stderr]    Compiling fixed v1.24.0
[INFO] [stderr]     Checking half v2.3.1
[INFO] [stderr]     Checking bytemuck v1.14.0
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling nrf-hal-common v0.16.0
[INFO] [stderr]     Checking cast v0.3.0
[INFO] [stderr]     Checking embedded-dma v0.2.0
[INFO] [stderr]    Compiling nrf51-hal v0.16.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking embedded-storage v0.3.1
[INFO] [stderr]     Checking linked_list_allocator v0.10.5
[INFO] [stderr]     Checking ringbuffer v0.12.0
[INFO] [stderr]     Checking alloc-cortex-m v0.4.4
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.7.0
[INFO] [stderr]  Documenting tudelft-quadrupel v2.1.0 (/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(strict_provenance)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 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 `tudelft-quadrupel`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/1.75.0-x86_64-unknown-linux-gnu/bin/rustdoc --edition=2021 --crate-type lib --crate-name tudelft_quadrupel src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=4914d5ee0f82ab2c -L dependency=/opt/rustwide/target/debug/deps --extern alloc_cortex_m=/opt/rustwide/target/debug/deps/liballoc_cortex_m-36ccf74d33fd4df1.rmeta --extern cortex_m=/opt/rustwide/target/debug/deps/libcortex_m-b9f1d59275a0c402.rmeta --extern cortex_m_rt=/opt/rustwide/target/debug/deps/libcortex_m_rt-f9ae4c3dda3db496.rmeta --extern embedded_hal=/opt/rustwide/target/debug/deps/libembedded_hal-9884b757a08a5c34.rmeta --extern fixed=/opt/rustwide/target/debug/deps/libfixed-9d37c61d69015787.rmeta --extern nb=/opt/rustwide/target/debug/deps/libnb-5229b0eb9944f8f8.rmeta --extern nrf51_hal=/opt/rustwide/target/debug/deps/libnrf51_hal-698bfc880441dbec.rmeta --extern nrf51_pac=/opt/rustwide/target/debug/deps/libnrf51_pac-dde12bfaa5c4cf55.rmeta --extern ringbuffer=/opt/rustwide/target/debug/deps/libringbuffer-42e2702625b3765c.rmeta --extern void=/opt/rustwide/target/debug/deps/libvoid-8beacb293700c732.rmeta --cap-lints=warn --crate-version 2.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "4846f83385b3c513e63d2ced2dc3b5a09a258497f50a6bd22e1b30449ff5a7d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4846f83385b3c513e63d2ced2dc3b5a09a258497f50a6bd22e1b30449ff5a7d9", kill_on_drop: false }`
[INFO] [stdout] 4846f83385b3c513e63d2ced2dc3b5a09a258497f50a6bd22e1b30449ff5a7d9
