[INFO] fetching crate stm32f3xx-hal 0.5.0...
[INFO] documenting stm32f3xx-hal-0.5.0 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate stm32f3xx-hal 0.5.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate stm32f3xx-hal 0.5.0 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-6/source/.cargo/config
[INFO] started tweaking crates.io crate stm32f3xx-hal 0.5.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate stm32f3xx-hal 0.5.0
[INFO] tweaked toml for crates.io crate stm32f3xx-hal 0.5.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate stm32f3xx-hal 0.5.0 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]  Downloading crates ...
[INFO] [stderr]   Downloaded stm32f3 v0.11.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] c2ed0f7d34cbcf3a18824121036385ddf3e8237e8a83b5a3a0e6b0281c7a89ac
[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" "c2ed0f7d34cbcf3a18824121036385ddf3e8237e8a83b5a3a0e6b0281c7a89ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c2ed0f7d34cbcf3a18824121036385ddf3e8237e8a83b5a3a0e6b0281c7a89ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2ed0f7d34cbcf3a18824121036385ddf3e8237e8a83b5a3a0e6b0281c7a89ac", kill_on_drop: false }`
[INFO] [stdout] c2ed0f7d34cbcf3a18824121036385ddf3e8237e8a83b5a3a0e6b0281c7a89ac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] cf43c9b7361df23530e51c65b87fe03ff126bff4ad3f28f0ae56ae7a7c37aa28
[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" "cf43c9b7361df23530e51c65b87fe03ff126bff4ad3f28f0ae56ae7a7c37aa28", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling cortex-m v0.6.3
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling syn v1.0.35
[INFO] [stderr]     Checking vcell v0.1.2
[INFO] [stderr]    Compiling stm32f3 v0.11.0
[INFO] [stderr]     Checking nb v1.0.0
[INFO] [stderr]     Checking bitfield v0.13.2
[INFO] [stderr]    Compiling cortex-m-rt v0.6.12
[INFO] [stderr]     Checking r0 v0.2.2
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking volatile-register v0.2.0
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]     Checking embedded-hal v0.2.4
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]     Checking generic-array v0.13.2
[INFO] [stderr]     Checking as-slice v0.1.3
[INFO] [stderr]     Checking aligned v0.3.2
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.1.8
[INFO] [stderr]  Documenting stm32f3xx-hal v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: This crate requires you to specify your target chip as a feature.
[INFO] [stdout] 
[INFO] [stdout]     Please select one of the following
[INFO] [stdout] 
[INFO] [stdout]     (Note: `x` denotes any character in [a-z])
[INFO] [stdout]     *   stm32f301
[INFO] [stdout]     *   stm32f318
[INFO] [stdout]     *   stm32f302xb
[INFO] [stdout]     *   stm32f302xc
[INFO] [stdout]     *   stm32f302xd
[INFO] [stdout]     *   stm32f302xe
[INFO] [stdout]     *   stm32f303xb
[INFO] [stdout]     *   stm32f303xc
[INFO] [stdout]     *   stm32f303xd
[INFO] [stdout]     *   stm32f303xe
[INFO] [stdout]     *   stm32f303x6
[INFO] [stdout]     *   stm32f303x8
[INFO] [stdout]     *   stm32f373
[INFO] [stdout]     *   stm32f378
[INFO] [stdout]     *   stm32f334
[INFO] [stdout]     *   stm32f328
[INFO] [stdout]     *   stm32f358
[INFO] [stdout]     *   stm32f398
[INFO] [stdout] 
[INFO] [stdout]     Example: The STM32F3Discovery board has a STM32F303VCT6 chip.
[INFO] [stdout]     So you want to expand your call to `cargo` with `--features stm32f303xc`.
[INFO] [stdout] 
[INFO] [stdout]     For more information, see README -> Selecting the right chip.
[INFO] [stdout]     
[INFO] [stdout]   --> src/lib.rs:37:1
[INFO] [stdout]    |
[INFO] [stdout] 37 | / compile_error!(
[INFO] [stdout] 38 | |     "This crate requires you to specify your target chip as a feature.
[INFO] [stdout] 39 | |
[INFO] [stdout] 40 | |     Please select one of the following
[INFO] [stdout] ...  |
[INFO] [stdout] 66 | |     "
[INFO] [stdout] 67 | | );
[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] [stderr] error: Could not document `stm32f3xx-hal`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name stm32f3xx_hal src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --cfg 'feature="unproven"' --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern bare_metal=/opt/rustwide/target/debug/deps/libbare_metal-c1083d650f1436d2.rmeta --extern cast=/opt/rustwide/target/debug/deps/libcast-59a5f58a0c38d1cc.rmeta --extern cortex_m=/opt/rustwide/target/debug/deps/libcortex_m-c3bd873e1bcf5999.rmeta --extern cortex_m_rt=/opt/rustwide/target/debug/deps/libcortex_m_rt-24fd1b3de0554c9c.rmeta --extern embedded_hal=/opt/rustwide/target/debug/deps/libembedded_hal-d01acc9fbf763b1e.rmeta --extern nb=/opt/rustwide/target/debug/deps/libnb-0cac5e18b6daa37c.rmeta --extern stable_deref_trait=/opt/rustwide/target/debug/deps/libstable_deref_trait-395e4fffc7dce9e0.rmeta --extern stm32f3=/opt/rustwide/target/debug/deps/libstm32f3-c8d0fece1efc5e50.rmeta --extern void=/opt/rustwide/target/debug/deps/libvoid-9def7bb9d7ac9b51.rmeta --cap-lints=warn --crate-version 0.5.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "cf43c9b7361df23530e51c65b87fe03ff126bff4ad3f28f0ae56ae7a7c37aa28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf43c9b7361df23530e51c65b87fe03ff126bff4ad3f28f0ae56ae7a7c37aa28", kill_on_drop: false }`
[INFO] [stdout] cf43c9b7361df23530e51c65b87fe03ff126bff4ad3f28f0ae56ae7a7c37aa28