[INFO] cloning repository https://github.com/nebelgrau77/STM32F0_clockface_DRAFT
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nebelgrau77/STM32F0_clockface_DRAFT" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnebelgrau77%2FSTM32F0_clockface_DRAFT", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnebelgrau77%2FSTM32F0_clockface_DRAFT'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c6497eed76fba51d4771d628494f79e092ce16ca
[INFO] documenting nebelgrau77/STM32F0_clockface_DRAFT against 1.47.0 for beta-1.48-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnebelgrau77%2FSTM32F0_clockface_DRAFT" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nebelgrau77/STM32F0_clockface_DRAFT on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-9/source/.cargo/config
[INFO] started tweaking git repo https://github.com/nebelgrau77/STM32F0_clockface_DRAFT
[INFO] finished tweaking git repo https://github.com/nebelgrau77/STM32F0_clockface_DRAFT
[INFO] tweaked toml for git repo https://github.com/nebelgrau77/STM32F0_clockface_DRAFT written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/nebelgrau77/STM32F0_clockface_DRAFT already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-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" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7e7eaa7ffa1749204ad629a0a9766f819ab5c0391a1ba464b38e057fb31e481a
[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" "7e7eaa7ffa1749204ad629a0a9766f819ab5c0391a1ba464b38e057fb31e481a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7e7eaa7ffa1749204ad629a0a9766f819ab5c0391a1ba464b38e057fb31e481a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e7eaa7ffa1749204ad629a0a9766f819ab5c0391a1ba464b38e057fb31e481a", kill_on_drop: false }`
[INFO] [stdout] 7e7eaa7ffa1749204ad629a0a9766f819ab5c0391a1ba464b38e057fb31e481a
[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" "+1.47.0" "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] f58fce7f61982a57a5a98b9e936d8c6f38e1045bba01255fbd42a5230e6def7a
[INFO] running `Command { std: "docker" "start" "-a" "f58fce7f61982a57a5a98b9e936d8c6f38e1045bba01255fbd42a5230e6def7a", kill_on_drop: false }`
[INFO] [stderr]  Documenting clockface 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:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(type_ascription)]
[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 `clockface`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name clockface src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern arrayvec=/opt/rustwide/target/debug/deps/libarrayvec-678d6b72e79b8d91.rmeta --extern cortex_m=/opt/rustwide/target/debug/deps/libcortex_m-38d322a3baabd99a.rmeta --extern cortex_m_rt=/opt/rustwide/target/debug/deps/libcortex_m_rt-f62343d48eecfc06.rmeta --extern embedded_graphics=/opt/rustwide/target/debug/deps/libembedded_graphics-7a21625a30969e90.rmeta --extern embedded_hal=/opt/rustwide/target/debug/deps/libembedded_hal-ef04bc89b65c90d0.rmeta --extern micromath=/opt/rustwide/target/debug/deps/libmicromath-de773be20f9d7ce9.rmeta --extern panic_halt=/opt/rustwide/target/debug/deps/libpanic_halt-cf482e4f96cba0d0.rmeta --extern ssd1306=/opt/rustwide/target/debug/deps/libssd1306-84b8f560ce60b61b.rmeta --extern stm32f0xx_hal=/opt/rustwide/target/debug/deps/libstm32f0xx_hal-5b9c9db4dd1dbd6e.rmeta --cap-lints=warn --crate-version 0.1.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "f58fce7f61982a57a5a98b9e936d8c6f38e1045bba01255fbd42a5230e6def7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f58fce7f61982a57a5a98b9e936d8c6f38e1045bba01255fbd42a5230e6def7a", kill_on_drop: false }`
[INFO] [stdout] f58fce7f61982a57a5a98b9e936d8c6f38e1045bba01255fbd42a5230e6def7a
