[INFO] fetching crate stm32f429i-disc 0.3.0...
[INFO] documenting stm32f429i-disc-0.3.0 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate stm32f429i-disc 0.3.0 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate stm32f429i-disc 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] removed /workspace/builds/worker-14/source/.cargo/config
[INFO] started tweaking crates.io crate stm32f429i-disc 0.3.0
[INFO] finished tweaking crates.io crate stm32f429i-disc 0.3.0
[INFO] tweaked toml for crates.io crate stm32f429i-disc 0.3.0 written to /workspace/builds/worker-14/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 tinytga v0.1.0
[INFO] [stderr]   Downloaded tinybmp v0.1.1
[INFO] [stderr]   Downloaded ssd1306 v0.2.6
[INFO] [stderr]   Downloaded embedded-graphics v0.4.9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] [stdout] 9bf51a48108fda91c4a11c60fe125410b2557e7719d614e073b4208748d4ad8a
[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" "9bf51a48108fda91c4a11c60fe125410b2557e7719d614e073b4208748d4ad8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9bf51a48108fda91c4a11c60fe125410b2557e7719d614e073b4208748d4ad8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9bf51a48108fda91c4a11c60fe125410b2557e7719d614e073b4208748d4ad8a", kill_on_drop: false }`
[INFO] [stdout] 9bf51a48108fda91c4a11c60fe125410b2557e7719d614e073b4208748d4ad8a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] 5a5ab1d9ce84c23afe47e6875779806438ac0ec611d8eef01b290dd4daca8b3a
[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" "5a5ab1d9ce84c23afe47e6875779806438ac0ec611d8eef01b290dd4daca8b3a", kill_on_drop: false }`
[INFO] [stderr]    Compiling stm32f4 v0.7.1
[INFO] [stderr]    Compiling cortex-m-rt v0.6.12
[INFO] [stderr]    Compiling syn v1.0.39
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.1.8
[INFO] [stderr]     Checking stm32f4xx-hal v0.5.0
[INFO] [stderr]  Documenting stm32f429i-disc v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: Could not document `stm32f429i-disc`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name stm32f429i_disc 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 cortex_m=/opt/rustwide/target/debug/deps/libcortex_m-159039d9c2079a4e.rmeta --extern cortex_m_rt=/opt/rustwide/target/debug/deps/libcortex_m_rt-4bebd9db5fff87d4.rmeta --extern embedded_hal=/opt/rustwide/target/debug/deps/libembedded_hal-0d83398ccd8f8b57.rmeta --extern stm32f4xx_hal=/opt/rustwide/target/debug/deps/libstm32f4xx_hal-a7c3707a68b5658c.rmeta --cap-lints=warn --crate-version 0.3.0` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "5a5ab1d9ce84c23afe47e6875779806438ac0ec611d8eef01b290dd4daca8b3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a5ab1d9ce84c23afe47e6875779806438ac0ec611d8eef01b290dd4daca8b3a", kill_on_drop: false }`
[INFO] [stdout] 5a5ab1d9ce84c23afe47e6875779806438ac0ec611d8eef01b290dd4daca8b3a