[INFO] cloning repository https://github.com/FrozenDroid/arm-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/FrozenDroid/arm-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFrozenDroid%2Farm-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFrozenDroid%2Farm-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5eed2dbac992c5f5e39ffefa370f8b5127f82eb9
[INFO] documenting FrozenDroid/arm-rs against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFrozenDroid%2Farm-rs" "/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/FrozenDroid/arm-rs 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-3/source/.cargo/config
[INFO] started tweaking git repo https://github.com/FrozenDroid/arm-rs
[INFO] finished tweaking git repo https://github.com/FrozenDroid/arm-rs
[INFO] tweaked toml for git repo https://github.com/FrozenDroid/arm-rs written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/FrozenDroid/arm-rs already has a lockfile, it will not be regenerated
[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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded syn v0.15.18
[INFO] [stderr]   Downloaded panic-semihosting v0.5.1
[INFO] [stderr]   Downloaded cortex-m v0.5.8
[INFO] [stderr]   Downloaded owned-singleton-macros v0.1.0
[INFO] [stderr]   Downloaded cortex-m-rt-macros v0.1.3
[INFO] [stderr]   Downloaded cortex-m-rt v0.6.5
[INFO] [stderr]   Downloaded heapless v0.4.0
[INFO] [stderr]   Downloaded stm32l4 v0.3.2
[INFO] [stderr]   Downloaded cortex-m-rtfm-macros v0.4.0-beta.2
[INFO] [stderr]   Downloaded hash32 v0.1.0
[INFO] [stderr]   Downloaded cortex-m-rtfm v0.4.0-beta.2
[INFO] [stderr]   Downloaded owned-singleton v0.1.0
[INFO] [stderr]   Downloaded cortex-m-semihosting v0.3.2
[INFO] [stderr]   Downloaded aligned v0.2.0
[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" "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] 948977f0145e225efb070e5c507a1fd572121ae241d9d59d028fc3da6ae22f97
[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" "948977f0145e225efb070e5c507a1fd572121ae241d9d59d028fc3da6ae22f97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "948977f0145e225efb070e5c507a1fd572121ae241d9d59d028fc3da6ae22f97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "948977f0145e225efb070e5c507a1fd572121ae241d9d59d028fc3da6ae22f97", kill_on_drop: false }`
[INFO] [stdout] 948977f0145e225efb070e5c507a1fd572121ae241d9d59d028fc3da6ae22f97
[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" "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] 4c748aa264101b17ec7b3cb49ae0f6ba053ec22bdd15207d6337b169b44635c4
[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" "4c748aa264101b17ec7b3cb49ae0f6ba053ec22bdd15207d6337b169b44635c4", kill_on_drop: false }`
[INFO] [stderr]    Compiling rand_core v0.3.0
[INFO] [stderr]     Checking vcell v0.1.0
[INFO] [stderr]    Compiling cortex-m v0.5.8
[INFO] [stderr]    Compiling cortex-m-rt v0.6.5
[INFO] [stderr]    Compiling cortex-m-semihosting v0.3.2
[INFO] [stderr]     Checking byteorder v1.2.7
[INFO] [stderr]    Compiling cortex-m-rtfm v0.4.0-beta.2
[INFO] [stderr]    Compiling stm32l4 v0.3.2
[INFO] [stderr]    Compiling armtest v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling bare-metal v0.2.4
[INFO] [stderr]    Compiling quote v0.6.9
[INFO] [stderr]     Checking volatile-register v0.2.0
[INFO] [stderr]    Compiling rand_core v0.2.2
[INFO] [stderr]    Compiling syn v0.15.18
[INFO] [stderr]    Compiling rand v0.5.5
[INFO] [stderr]     Checking hash32 v0.1.0
[INFO] [stderr]     Checking heapless v0.4.0
[INFO] [stderr]     Checking panic-semihosting v0.5.1
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.1.3
[INFO] [stderr]    Compiling owned-singleton-macros v0.1.0
[INFO] [stderr]    Compiling cortex-m-rtfm-macros v0.4.0-beta.2
[INFO] [stderr]     Checking owned-singleton v0.1.0
[INFO] [stderr]  Documenting armtest v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: expected one of `(`, `.`, `::`, `;`, `?`, `}`, or an operator, found `rcc`
[INFO] [stdout]   --> src/main.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |         per.LPUART1
[INFO] [stdout]    |                    - expected one of 7 possible tokens
[INFO] [stdout] 37 |         rcc.ahb2enr.write(|w| {
[INFO] [stdout]    |         ^^^ unexpected token
[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] [stderr] error: Could not document `armtest`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name armtest 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 cortex_m=/opt/rustwide/target/debug/deps/libcortex_m-f453cc36e5403531.rmeta --extern cortex_m_rt=/opt/rustwide/target/debug/deps/libcortex_m_rt-883c32a78b47e97c.rmeta --extern rtfm=/opt/rustwide/target/debug/deps/librtfm-28071a06fb0f7f25.rmeta --extern cortex_m_semihosting=/opt/rustwide/target/debug/deps/libcortex_m_semihosting-61cac723e6499c67.rmeta --extern panic_semihosting=/opt/rustwide/target/debug/deps/libpanic_semihosting-e2e364a38e6b37ae.rmeta --extern stm32l4=/opt/rustwide/target/debug/deps/libstm32l4-43939e690929a78d.rmeta --cap-lints=warn --crate-version 0.1.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "4c748aa264101b17ec7b3cb49ae0f6ba053ec22bdd15207d6337b169b44635c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c748aa264101b17ec7b3cb49ae0f6ba053ec22bdd15207d6337b169b44635c4", kill_on_drop: false }`
[INFO] [stdout] 4c748aa264101b17ec7b3cb49ae0f6ba053ec22bdd15207d6337b169b44635c4