[INFO] fetching crate atsamd-hal 0.9.0...
[INFO] documenting atsamd-hal-0.9.0 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate atsamd-hal 0.9.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate atsamd-hal 0.9.0 on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate atsamd-hal 0.9.0
[INFO] finished tweaking crates.io crate atsamd-hal 0.9.0
[INFO] tweaked toml for crates.io crate atsamd-hal 0.9.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a17d7deb3087904663f8d5d1913a9269509a53bd9758d5f863aed31f7013d8ae
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "a17d7deb3087904663f8d5d1913a9269509a53bd9758d5f863aed31f7013d8ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a17d7deb3087904663f8d5d1913a9269509a53bd9758d5f863aed31f7013d8ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a17d7deb3087904663f8d5d1913a9269509a53bd9758d5f863aed31f7013d8ae", kill_on_drop: false }`
[INFO] [stdout] a17d7deb3087904663f8d5d1913a9269509a53bd9758d5f863aed31f7013d8ae
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 48ab3aadc82b0cdfcfef83a91c3a18a9a98b36285a0fb926b6ef4564660a880d
[INFO] running `Command { std: "docker" "start" "-a" "48ab3aadc82b0cdfcfef83a91c3a18a9a98b36285a0fb926b6ef4564660a880d", kill_on_drop: false }`
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]  Documenting atsamd-hal v0.9.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `crate::clock`
[INFO] [stdout]  --> src/common/delay.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::clock::GenericClockController;
[INFO] [stdout]   |            ^^^^^ maybe a missing crate `clock`?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `crate::gpio`
[INFO] [stdout]  --> src/common/pad.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::gpio::Port;
[INFO] [stdout]   |            ^^^^ maybe a missing crate `gpio`?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `crate::gpio`
[INFO] [stdout]  --> src/common/prelude.rs:2:16
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub use crate::gpio::GpioExt as _atsamd21_hal_gpio_GpioExt;
[INFO] [stdout]   |                ^^^^ maybe a missing crate `gpio`?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `atsamd-hal`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name atsamd_hal src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern bitfield=/opt/rustwide/target/debug/deps/libbitfield-bfd0f3c84ba55e75.rmeta --extern cortex_m=/opt/rustwide/target/debug/deps/libcortex_m-041cc3e8101fe1f1.rmeta --extern embedded_hal=/opt/rustwide/target/debug/deps/libembedded_hal-c5e998d9141e329f.rmeta --extern nb=/opt/rustwide/target/debug/deps/libnb-6c6f6262830af367.rmeta --extern paste=/opt/rustwide/target/debug/deps/libpaste-514faef5943cd189.rmeta --extern rand_core=/opt/rustwide/target/debug/deps/librand_core-1073656304a056b9.rmeta --extern vcell=/opt/rustwide/target/debug/deps/libvcell-2f371df3cd1ada44.rmeta --extern void=/opt/rustwide/target/debug/deps/libvoid-7dc3f9a4751321c3.rmeta --cap-lints=warn` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "48ab3aadc82b0cdfcfef83a91c3a18a9a98b36285a0fb926b6ef4564660a880d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48ab3aadc82b0cdfcfef83a91c3a18a9a98b36285a0fb926b6ef4564660a880d", kill_on_drop: false }`
[INFO] [stdout] 48ab3aadc82b0cdfcfef83a91c3a18a9a98b36285a0fb926b6ef4564660a880d