[INFO] cloning repository https://github.com/Windfisch/rs-stm32f4-usbhost
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Windfisch/rs-stm32f4-usbhost" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWindfisch%2Frs-stm32f4-usbhost", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWindfisch%2Frs-stm32f4-usbhost'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c7110158ed76cf1a23f2aa955eec9a8aa585aa1f
[INFO] documenting Windfisch/rs-stm32f4-usbhost against 1.61.0 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWindfisch%2Frs-stm32f4-usbhost" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Windfisch/rs-stm32f4-usbhost on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-14/source/.cargo/config
[INFO] started tweaking git repo https://github.com/Windfisch/rs-stm32f4-usbhost
[INFO] finished tweaking git repo https://github.com/Windfisch/rs-stm32f4-usbhost
[INFO] tweaked toml for git repo https://github.com/Windfisch/rs-stm32f4-usbhost written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/Windfisch/rs-stm32f4-usbhost already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: unstable
[INFO] [stderr]     Updating git repository `https://github.com/Windfisch/sharing-coroutines-nostd`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded r0 v0.2.2
[INFO] [stderr]   Downloaded cortex-m-rt-macros v0.1.8
[INFO] [stderr]   Downloaded embedded-dma v0.1.2
[INFO] [stderr]   Downloaded rtcc v0.2.1
[INFO] [stderr]   Downloaded hash32 v0.2.1
[INFO] [stderr]   Downloaded embedded-hal v0.2.6
[INFO] [stderr]   Downloaded heapless v0.7.8
[INFO] [stderr]   Downloaded cast v0.3.0
[INFO] [stderr]   Downloaded cortex-m-rt v0.7.1
[INFO] [stderr]   Downloaded atomic-polyfill v0.1.5
[INFO] [stderr]   Downloaded volatile-register v0.2.0
[INFO] [stderr]   Downloaded cortex-m-rt-macros v0.7.0
[INFO] [stderr]   Downloaded cortex-m v0.7.2
[INFO] [stderr]   Downloaded cortex-m-rt v0.6.14
[INFO] [stderr]   Downloaded stm32f4 v0.13.0
[INFO] [stderr]   Downloaded stm32f4xx-hal v0.10.1
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "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] ea37053cc1dfcfd7de9e3b9fcdf6f276952fe4ff9150734c9aa19911f8982b2f
[INFO] running `Command { std: "docker" "start" "-a" "ea37053cc1dfcfd7de9e3b9fcdf6f276952fe4ff9150734c9aa19911f8982b2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ea37053cc1dfcfd7de9e3b9fcdf6f276952fe4ff9150734c9aa19911f8982b2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea37053cc1dfcfd7de9e3b9fcdf6f276952fe4ff9150734c9aa19911f8982b2f", kill_on_drop: false }`
[INFO] [stdout] ea37053cc1dfcfd7de9e3b9fcdf6f276952fe4ff9150734c9aa19911f8982b2f
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "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] 569a84150e0b02bb6e7a060a267a5b6cffeb8ef9525937a47151400e11cb14b9
[INFO] running `Command { std: "docker" "start" "-a" "569a84150e0b02bb6e7a060a267a5b6cffeb8ef9525937a47151400e11cb14b9", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: unstable
[INFO] [stderr]     Checking nb v1.0.0
[INFO] [stderr]    Compiling cortex-m v0.7.2
[INFO] [stderr]     Checking vcell v0.1.3
[INFO] [stderr]    Compiling cortex-m-rt v0.6.14
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling cortex-m-rt v0.7.1
[INFO] [stderr]     Checking bitfield v0.13.2
[INFO] [stderr]    Compiling stm32f4 v0.13.0
[INFO] [stderr]    Compiling heapless v0.7.8
[INFO] [stderr]     Checking bare-metal v1.0.0
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking cast v0.3.0
[INFO] [stderr]     Checking sharing-coroutines-nostd v0.1.0 (https://github.com/Windfisch/sharing-coroutines-nostd?rev=e559d9a719f77f36e17d987946d4d00015586e93#e559d9a7)
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking hash32 v0.2.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking spin v0.9.2
[INFO] [stderr]     Checking volatile-register v0.2.0
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]     Checking embedded-dma v0.1.2
[INFO] [stderr]     Checking embedded-hal v0.2.6
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]     Checking num-integer v0.1.44
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking rtcc v0.2.1
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.1.8
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.7.0
[INFO] [stderr]     Checking stm32f4xx-hal v0.10.1
[INFO] [stderr]  Documenting blinky v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(type_alias_impl_trait)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `blinky`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name blinky src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=1292612f2e03d129 -L dependency=/opt/rustwide/target/debug/deps --extern cortex_m=/opt/rustwide/target/debug/deps/libcortex_m-5addf58cfafe2916.rmeta --extern cortex_m_rt=/opt/rustwide/target/debug/deps/libcortex_m_rt-6bebfe13299d5382.rmeta --extern embedded_hal=/opt/rustwide/target/debug/deps/libembedded_hal-607aa9c8062de56c.rmeta --extern heapless=/opt/rustwide/target/debug/deps/libheapless-fa37e99f2ac4f479.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-ed3ba279ce80868a.rmeta --extern nb=/opt/rustwide/target/debug/deps/libnb-be0ff757524a09fc.rmeta --extern sharing_coroutines_nostd=/opt/rustwide/target/debug/deps/libsharing_coroutines_nostd-2ac4cfa05d82e633.rmeta --extern stm32f4=/opt/rustwide/target/debug/deps/libstm32f4-fb372a458b66796e.rmeta --extern stm32f4xx_hal=/opt/rustwide/target/debug/deps/libstm32f4xx_hal-ab28eabe782fb8a8.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "569a84150e0b02bb6e7a060a267a5b6cffeb8ef9525937a47151400e11cb14b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "569a84150e0b02bb6e7a060a267a5b6cffeb8ef9525937a47151400e11cb14b9", kill_on_drop: false }`
[INFO] [stdout] 569a84150e0b02bb6e7a060a267a5b6cffeb8ef9525937a47151400e11cb14b9