[INFO] fetching crate tudelft-quadrupel 2.1.0...
[INFO] documenting tudelft-quadrupel-2.1.0 against 1.69.0 for beta-1.70-rustdoc-1
[INFO] extracting crate tudelft-quadrupel 2.1.0 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate tudelft-quadrupel 2.1.0 on toolchain 1.69.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-1-tc1/source/.cargo/config.toml
[INFO] removed /workspace/builds/worker-1-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-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" __CARGO_TEST_CHANNEL_OVERRIDE_DO_NOT_USE_THIS="nightly" "/workspace/cargo-home/bin/cargo" "+1.69.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ringbuffer v0.12.0
[INFO] [stderr]   Downloaded linked_list_allocator v0.10.5
[INFO] [stderr]   Downloaded embedded-storage v0.3.0
[INFO] [stderr]   Downloaded nrf-hal-common v0.16.0
[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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5cec6d5f38391be9d2d0a015fdfc68698bebbee3135e4004ff6d6112b24d7fd4
[INFO] running `Command { std: "docker" "start" "-a" "5cec6d5f38391be9d2d0a015fdfc68698bebbee3135e4004ff6d6112b24d7fd4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5cec6d5f38391be9d2d0a015fdfc68698bebbee3135e4004ff6d6112b24d7fd4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5cec6d5f38391be9d2d0a015fdfc68698bebbee3135e4004ff6d6112b24d7fd4", kill_on_drop: false }`
[INFO] [stdout] 5cec6d5f38391be9d2d0a015fdfc68698bebbee3135e4004ff6d6112b24d7fd4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6b9793a60088fbd0e81ad594f7c3b5d9ae7d4689f1724001b7b8d15ba49bcdd5
[INFO] running `Command { std: "docker" "start" "-a" "6b9793a60088fbd0e81ad594f7c3b5d9ae7d4689f1724001b7b8d15ba49bcdd5", kill_on_drop: false }`
[INFO] [stderr]    Compiling cortex-m v0.7.7
[INFO] [stderr]     Checking nb v1.1.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking vcell v0.1.3
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]    Compiling cortex-m-rt v0.7.3
[INFO] [stderr]    Compiling az v1.2.1
[INFO] [stderr]     Checking volatile-register v0.2.1
[INFO] [stderr]     Checking bitfield v0.13.2
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]    Compiling nrf51-pac v0.12.2
[INFO] [stderr]     Checking embedded-hal v0.2.7
[INFO] [stderr]    Compiling fixed v1.23.1
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking half v2.2.1
[INFO] [stderr]    Compiling nrf-hal-common v0.16.0
[INFO] [stderr]     Checking bytemuck v1.13.1
[INFO] [stderr]     Checking embedded-dma v0.2.0
[INFO] [stderr]    Compiling nrf51-hal v0.16.0
[INFO] [stderr]     Checking cast v0.3.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking embedded-storage v0.3.0
[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: `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=66a0e6304188ebd1 -L dependency=/opt/rustwide/target/debug/deps --extern alloc_cortex_m=/opt/rustwide/target/debug/deps/liballoc_cortex_m-9e0001ef9ad4b78e.rmeta --extern cortex_m=/opt/rustwide/target/debug/deps/libcortex_m-9dc62925caa3a53f.rmeta --extern cortex_m_rt=/opt/rustwide/target/debug/deps/libcortex_m_rt-77850d3ea64605e7.rmeta --extern embedded_hal=/opt/rustwide/target/debug/deps/libembedded_hal-4e76b2e7199317fe.rmeta --extern fixed=/opt/rustwide/target/debug/deps/libfixed-ebf625a6b7fdd1fe.rmeta --extern nb=/opt/rustwide/target/debug/deps/libnb-c0940b74fad3493c.rmeta --extern nrf51_hal=/opt/rustwide/target/debug/deps/libnrf51_hal-a9062e03b205f99e.rmeta --extern nrf51_pac=/opt/rustwide/target/debug/deps/libnrf51_pac-3a251e4d95bbbad7.rmeta --extern ringbuffer=/opt/rustwide/target/debug/deps/libringbuffer-78d147775fa6c62d.rmeta --extern void=/opt/rustwide/target/debug/deps/libvoid-a1dcd028eea2d9af.rmeta --cap-lints=warn --crate-version 2.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "6b9793a60088fbd0e81ad594f7c3b5d9ae7d4689f1724001b7b8d15ba49bcdd5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b9793a60088fbd0e81ad594f7c3b5d9ae7d4689f1724001b7b8d15ba49bcdd5", kill_on_drop: false }`
[INFO] [stdout] 6b9793a60088fbd0e81ad594f7c3b5d9ae7d4689f1724001b7b8d15ba49bcdd5
