[INFO] cloning repository https://github.com/alanmonu12/Rust-embebido
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/alanmonu12/Rust-embebido" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falanmonu12%2FRust-embebido", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falanmonu12%2FRust-embebido'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0a244f1d8788674394f2590e689be7e28861507d
[INFO] documenting alanmonu12/Rust-embebido 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%2Falanmonu12%2FRust-embebido" "/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/alanmonu12/Rust-embebido 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-14/source/.cargo/config
[INFO] started tweaking git repo https://github.com/alanmonu12/Rust-embebido
[INFO] finished tweaking git repo https://github.com/alanmonu12/Rust-embebido
[INFO] tweaked toml for git repo https://github.com/alanmonu12/Rust-embebido written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/alanmonu12/Rust-embebido 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 stm32l4 v0.11.0
[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" "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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5950cd128b4d7b3d74d5f27f06f70b301e046c5a9fa0893149fbb9eae9f73b80
[INFO] running `Command { std: "docker" "start" "-a" "5950cd128b4d7b3d74d5f27f06f70b301e046c5a9fa0893149fbb9eae9f73b80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5950cd128b4d7b3d74d5f27f06f70b301e046c5a9fa0893149fbb9eae9f73b80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5950cd128b4d7b3d74d5f27f06f70b301e046c5a9fa0893149fbb9eae9f73b80", kill_on_drop: false }`
[INFO] [stdout] 5950cd128b4d7b3d74d5f27f06f70b301e046c5a9fa0893149fbb9eae9f73b80
[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" "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] aacf12d2b5bd8087311f5c49cc61e514472cdc5022027ba428a26eb24452473c
[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" "aacf12d2b5bd8087311f5c49cc61e514472cdc5022027ba428a26eb24452473c", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.18
[INFO] [stderr]    Compiling cortex-m-semihosting v0.3.5
[INFO] [stderr]    Compiling stm32l4 v0.11.0
[INFO] [stderr]     Checking panic-semihosting v0.5.3
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.1.8
[INFO] [stderr]     Checking cortex-m-rt v0.6.12
[INFO] [stderr]  Documenting led-blink-stm32l4-PAC v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: duplicate lang item in crate `panic_semihosting` (which `led_blink_stm32l4_PAC` depends on): `panic_impl`.
[INFO] [stdout]   |
[INFO] [stdout]   = note: the lang item is first defined in crate `panic_halt` (which `led_blink_stm32l4_PAC` depends on)
[INFO] [stdout]   = note: first definition in `panic_halt` loaded from /opt/rustwide/target/debug/deps/libpanic_halt-e898de5af9d9d9bd.rmeta
[INFO] [stdout]   = note: second definition in `panic_semihosting` loaded from /opt/rustwide/target/debug/deps/libpanic_semihosting-ba7db71e1f4beb4b.rmeta
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `led-blink-stm32l4-PAC`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name led_blink_stm32l4_PAC 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-4bfbeef0cf2a529b.rmeta --extern cortex_m_rt=/opt/rustwide/target/debug/deps/libcortex_m_rt-4f50a41792806b74.rmeta --extern cortex_m_semihosting=/opt/rustwide/target/debug/deps/libcortex_m_semihosting-2050480ded877d5c.rmeta --extern panic_halt=/opt/rustwide/target/debug/deps/libpanic_halt-e898de5af9d9d9bd.rmeta --extern panic_semihosting=/opt/rustwide/target/debug/deps/libpanic_semihosting-ba7db71e1f4beb4b.rmeta --extern stm32l4=/opt/rustwide/target/debug/deps/libstm32l4-ac4a189d4ac2ad40.rmeta --cap-lints=warn --crate-version 0.1.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "aacf12d2b5bd8087311f5c49cc61e514472cdc5022027ba428a26eb24452473c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aacf12d2b5bd8087311f5c49cc61e514472cdc5022027ba428a26eb24452473c", kill_on_drop: false }`
[INFO] [stdout] aacf12d2b5bd8087311f5c49cc61e514472cdc5022027ba428a26eb24452473c