[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 beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnebelgrau77%2FSTM32F0_clockface_DRAFT" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nebelgrau77/STM32F0_clockface_DRAFT on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-3/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-3/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" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9636004894cd82b28925e3d3cff856795d9f9e3ece05d4ded4839fe09579e8da
[INFO] running `Command { std: "docker" "start" "-a" "9636004894cd82b28925e3d3cff856795d9f9e3ece05d4ded4839fe09579e8da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9636004894cd82b28925e3d3cff856795d9f9e3ece05d4ded4839fe09579e8da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9636004894cd82b28925e3d3cff856795d9f9e3ece05d4ded4839fe09579e8da", kill_on_drop: false }`
[INFO] [stdout] 9636004894cd82b28925e3d3cff856795d9f9e3ece05d4ded4839fe09579e8da
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 44ae093533ef3d109f79f3ba357faf6fff2b45e202d8dcb1fda0850e86e35887
[INFO] running `Command { std: "docker" "start" "-a" "44ae093533ef3d109f79f3ba357faf6fff2b45e202d8dcb1fda0850e86e35887", kill_on_drop: false }`
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling cortex-m v0.6.1
[INFO] [stderr]    Compiling cortex-m-rt v0.6.10
[INFO] [stderr]    Compiling stm32f0 v0.8.0
[INFO] [stderr]    Compiling ssd1306 v0.3.0-alpha.4
[INFO] [stderr]     Checking cast v0.2.2
[INFO] [stderr]     Checking micromath v1.0.0
[INFO] [stderr]     Checking as-slice v0.1.0
[INFO] [stderr]     Checking embedded-graphics v0.6.0-alpha.3
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand v0.5.6
[INFO] [stderr]     Checking aligned v0.3.1
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.1.5
[INFO] [stderr]     Checking stm32f0xx-hal v0.15.2
[INFO] [stderr]  Documenting clockface v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta 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-2fc8aad7e31fcabd.rmeta --extern cortex_m=/opt/rustwide/target/debug/deps/libcortex_m-cb07a997bc4b1a40.rmeta --extern cortex_m_rt=/opt/rustwide/target/debug/deps/libcortex_m_rt-a47474695d925611.rmeta --extern embedded_graphics=/opt/rustwide/target/debug/deps/libembedded_graphics-d27496839194a387.rmeta --extern embedded_hal=/opt/rustwide/target/debug/deps/libembedded_hal-011038f2c75cbf89.rmeta --extern micromath=/opt/rustwide/target/debug/deps/libmicromath-9c15ba01679a7561.rmeta --extern panic_halt=/opt/rustwide/target/debug/deps/libpanic_halt-e6a12aff4a67426a.rmeta --extern ssd1306=/opt/rustwide/target/debug/deps/libssd1306-c55a704c93e81497.rmeta --extern stm32f0xx_hal=/opt/rustwide/target/debug/deps/libstm32f0xx_hal-a7aef25b78e02445.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "44ae093533ef3d109f79f3ba357faf6fff2b45e202d8dcb1fda0850e86e35887", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44ae093533ef3d109f79f3ba357faf6fff2b45e202d8dcb1fda0850e86e35887", kill_on_drop: false }`
[INFO] [stdout] 44ae093533ef3d109f79f3ba357faf6fff2b45e202d8dcb1fda0850e86e35887
