[INFO] updating cached repository https://github.com/ForsakenHarmony/stm32-ws2812
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f9e7539d3899f39d8614a6802663fc85cc9692b7
[INFO] documenting ForsakenHarmony/stm32-ws2812 against master#394e1b40d264aa6928811919c1124fa248e7d802 for pr-73566
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FForsakenHarmony%2Fstm32-ws2812" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ForsakenHarmony/stm32-ws2812 on toolchain 394e1b40d264aa6928811919c1124fa248e7d802
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-13/source/.cargo/config
[INFO] started tweaking git repo https://github.com/ForsakenHarmony/stm32-ws2812
[INFO] finished tweaking git repo https://github.com/ForsakenHarmony/stm32-ws2812
[INFO] tweaked toml for git repo https://github.com/ForsakenHarmony/stm32-ws2812 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/ForsakenHarmony/stm32-ws2812 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 763aa7d2c0146d50d34bf47703eb9f2a0044aa42add757ca9e015e6eef383841
[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" "763aa7d2c0146d50d34bf47703eb9f2a0044aa42add757ca9e015e6eef383841", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "763aa7d2c0146d50d34bf47703eb9f2a0044aa42add757ca9e015e6eef383841", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "763aa7d2c0146d50d34bf47703eb9f2a0044aa42add757ca9e015e6eef383841", kill_on_drop: false }`
[INFO] [stdout] 763aa7d2c0146d50d34bf47703eb9f2a0044aa42add757ca9e015e6eef383841
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c4ac1c10cfd5e0f8250851715a34b35e73593cc0ac3438b8696e42b59bbbbc2b
[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" "c4ac1c10cfd5e0f8250851715a34b35e73593cc0ac3438b8696e42b59bbbbc2b", kill_on_drop: false }`
[INFO] [stderr]    Compiling cortex-m v0.6.1
[INFO] [stderr]     Checking stable_deref_trait v1.1.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.7
[INFO] [stderr]     Checking vcell v0.1.2
[INFO] [stderr]    Compiling syn v1.0.13
[INFO] [stderr]     Checking rgb v0.8.14
[INFO] [stderr]    Compiling cortex-m-rt v0.6.11
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking r0 v0.2.2
[INFO] [stderr]    Compiling stm32l4 v0.8.0
[INFO] [stderr]    Compiling cortex-m-semihosting v0.3.5
[INFO] [stderr]    Compiling cortex-m v0.5.10
[INFO] [stderr]     Checking aligned v0.2.0
[INFO] [stderr]     Checking panic-halt v0.2.0
[INFO] [stderr]     Checking generic-array v0.13.2
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]     Checking volatile-register v0.2.0
[INFO] [stderr]     Checking embedded-hal v0.2.3
[INFO] [stderr]     Checking smart-leds-trait v0.2.0
[INFO] [stderr]     Checking as-slice v0.1.2
[INFO] [stderr]     Checking smart-leds v0.3.0
[INFO] [stderr]     Checking ws2812-timer-delay v0.3.0
[INFO] [stderr]     Checking ws2812-spi v0.2.0
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking aligned v0.3.2
[INFO] [stderr]     Checking panic-semihosting v0.5.3
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.1.7
[INFO] [stderr]     Checking stm32l4xx-hal v0.5.0
[INFO] [stderr]  Documenting stm32-ws2812 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: duplicate lang item in crate `panic_halt` (which `stm32_ws2812` depends on): `panic_impl`.
[INFO] [stdout]   |
[INFO] [stdout]   = note: the lang item is first defined in crate `panic_semihosting` (which `stm32_ws2812` depends on)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `stm32-ws2812`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name stm32_ws2812 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 bare_metal=/opt/rustwide/target/debug/deps/libbare_metal-a8e21120a972fca3.rmeta --extern cortex_m=/opt/rustwide/target/debug/deps/libcortex_m-00f204a9e0a1160d.rmeta --extern cortex_m_rt=/opt/rustwide/target/debug/deps/libcortex_m_rt-cf7c5384f3290894.rmeta --extern cortex_m_semihosting=/opt/rustwide/target/debug/deps/libcortex_m_semihosting-e1b5a970de6acc62.rmeta --extern embedded_hal=/opt/rustwide/target/debug/deps/libembedded_hal-6e8038d75ebd8733.rmeta --extern nb=/opt/rustwide/target/debug/deps/libnb-77e4a015e0573cc7.rmeta --extern panic_halt=/opt/rustwide/target/debug/deps/libpanic_halt-5cb144f9267ebca2.rmeta --extern panic_semihosting=/opt/rustwide/target/debug/deps/libpanic_semihosting-f0d67806e651e3f9.rmeta --extern smart_leds=/opt/rustwide/target/debug/deps/libsmart_leds-d9083f15fc1bf560.rmeta --extern stm32l4xx_hal=/opt/rustwide/target/debug/deps/libstm32l4xx_hal-fd85e68e410d446b.rmeta --extern ws2812_spi=/opt/rustwide/target/debug/deps/libws2812_spi-b5685a968058ac1f.rmeta --extern ws2812_timer_delay=/opt/rustwide/target/debug/deps/libws2812_timer_delay-65b18d799fd090d0.rmeta --cap-lints=forbid` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "c4ac1c10cfd5e0f8250851715a34b35e73593cc0ac3438b8696e42b59bbbbc2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4ac1c10cfd5e0f8250851715a34b35e73593cc0ac3438b8696e42b59bbbbc2b", kill_on_drop: false }`
[INFO] [stdout] c4ac1c10cfd5e0f8250851715a34b35e73593cc0ac3438b8696e42b59bbbbc2b