[INFO] fetching crate efm32gg-hal 0.3.0...
[INFO] documenting efm32gg-hal-0.3.0 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate efm32gg-hal 0.3.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate efm32gg-hal 0.3.0 on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate efm32gg-hal 0.3.0
[INFO] finished tweaking crates.io crate efm32gg-hal 0.3.0
[INFO] tweaked toml for crates.io crate efm32gg-hal 0.3.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded efr32xg1 v0.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", 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] 8bbedf46b1f6af083004d3d205d71927a6368eb54e979e7643e0de88afb639be
[INFO] running `Command { std: "docker" "start" "-a" "8bbedf46b1f6af083004d3d205d71927a6368eb54e979e7643e0de88afb639be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8bbedf46b1f6af083004d3d205d71927a6368eb54e979e7643e0de88afb639be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8bbedf46b1f6af083004d3d205d71927a6368eb54e979e7643e0de88afb639be", kill_on_drop: false }`
[INFO] [stdout] 8bbedf46b1f6af083004d3d205d71927a6368eb54e979e7643e0de88afb639be
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4fa0d56238bea7b53484cf7f16cde8b27547e23f9f013696618c9248419b3f87
[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" "4fa0d56238bea7b53484cf7f16cde8b27547e23f9f013696618c9248419b3f87", kill_on_drop: false }`
[INFO] [stderr]    Compiling cortex-m v0.5.10
[INFO] [stderr]     Checking aligned v0.2.0
[INFO] [stderr]  Documenting efm32gg-hal v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `registers`
[INFO] [stdout]   --> src/cmu.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | use registers;
[INFO] [stdout]    |     ^^^^^^^^^ no `registers` external crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `registers`
[INFO] [stdout]  --> src/gpio.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use registers;
[INFO] [stdout]   |     ^^^^^^^^^ no `registers` external crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `registers`
[INFO] [stdout]  --> src/timer.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use registers;
[INFO] [stdout]   |     ^^^^^^^^^ no `registers` external crate
[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 `efm32gg-hal`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name efm32gg_hal src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --cfg 'feature="unproven"' --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern cortex_m=/opt/rustwide/target/debug/deps/libcortex_m-d8000ed704aa8b51.rmeta --extern embedded_hal=/opt/rustwide/target/debug/deps/libembedded_hal-0d83398ccd8f8b57.rmeta --cap-lints=warn --crate-version 0.3.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "4fa0d56238bea7b53484cf7f16cde8b27547e23f9f013696618c9248419b3f87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4fa0d56238bea7b53484cf7f16cde8b27547e23f9f013696618c9248419b3f87", kill_on_drop: false }`
[INFO] [stdout] 4fa0d56238bea7b53484cf7f16cde8b27547e23f9f013696618c9248419b3f87