[INFO] cloning repository https://github.com/CramMK/microbit-snake-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/CramMK/microbit-snake-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCramMK%2Fmicrobit-snake-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCramMK%2Fmicrobit-snake-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 73ca0472beeca91c08cb8c822a8f51f29109d4d9
[INFO] documenting CramMK/microbit-snake-rs against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCramMK%2Fmicrobit-snake-rs" "/workspace/builds/worker-24/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-24/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/CramMK/microbit-snake-rs on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-24/source/.cargo/config
[INFO] started tweaking git repo https://github.com/CramMK/microbit-snake-rs
[INFO] finished tweaking git repo https://github.com/CramMK/microbit-snake-rs
[INFO] tweaked toml for git repo https://github.com/CramMK/microbit-snake-rs written to /workspace/builds/worker-24/source/Cargo.toml
[INFO] crate git repo https://github.com/CramMK/microbit-snake-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a7910a18a4f2f766881f1056eb49d330d710660c7cca80418570a41a2967c36f
[INFO] running `Command { std: "docker" "start" "-a" "a7910a18a4f2f766881f1056eb49d330d710660c7cca80418570a41a2967c36f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a7910a18a4f2f766881f1056eb49d330d710660c7cca80418570a41a2967c36f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7910a18a4f2f766881f1056eb49d330d710660c7cca80418570a41a2967c36f", kill_on_drop: false }`
[INFO] [stdout] a7910a18a4f2f766881f1056eb49d330d710660c7cca80418570a41a2967c36f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2e8efc3910f740094dd7f794a09ba864131c275f3b9f5d6201b5c55654bb0b65
[INFO] running `Command { std: "docker" "start" "-a" "2e8efc3910f740094dd7f794a09ba864131c275f3b9f5d6201b5c55654bb0b65", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling typenum v1.14.0
[INFO] [stderr]    Compiling cortex-m v0.7.3
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]     Checking nb v1.0.0
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]     Checking vcell v0.1.3
[INFO] [stderr]     Checking bitfield v0.13.2
[INFO] [stderr]    Compiling semver v1.0.4
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling cortex-m-rt v0.6.15
[INFO] [stderr]    Compiling cortex-m v0.6.7
[INFO] [stderr]    Compiling az v1.1.2
[INFO] [stderr]    Compiling fixed v1.10.0
[INFO] [stderr]     Checking r0 v0.2.2
[INFO] [stderr]    Compiling nrf52833-pac v0.9.0
[INFO] [stderr]     Checking bytemuck v1.7.2
[INFO] [stderr]     Checking half v1.7.1
[INFO] [stderr]     Checking usb-device v0.2.8
[INFO] [stderr]    Compiling nrf-hal-common v0.13.0 (https://github.com/nrf-rs/nrf-hal#d7aa29ef)
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking embedded-storage v0.1.0
[INFO] [stderr]    Compiling nrf52833-hal v0.13.0 (https://github.com/nrf-rs/nrf-hal#d7aa29ef)
[INFO] [stderr]     Checking ufmt-write v0.1.0
[INFO] [stderr]     Checking tiny-led-matrix v1.0.2
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling heapless v0.7.5
[INFO] [stderr]     Checking panic-halt v0.2.0
[INFO] [stderr]     Checking embedded-dma v0.1.2
[INFO] [stderr]     Checking volatile-register v0.2.1
[INFO] [stderr]     Checking rtt-target v0.3.1
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking hash32 v0.2.1
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]     Checking embedded-hal v0.2.6
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]    Compiling cast v0.2.7
[INFO] [stderr]     Checking generic-array v0.13.3
[INFO] [stderr]     Checking generic-array v0.12.4
[INFO] [stderr]     Checking as-slice v0.1.5
[INFO] [stderr]     Checking nrf-usbd v0.1.0
[INFO] [stderr]     Checking panic-rtt-target v0.1.2
[INFO] [stderr]     Checking aligned v0.3.5
[INFO] [stderr]     Checking rtt-target v0.2.2
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.6.15
[INFO] [stderr]     Checking microbit-common v0.10.1 (https://github.com/nrf-rs/microbit/#d29705d2)
[INFO] [stderr]     Checking microbit-v2 v0.10.1 (https://github.com/nrf-rs/microbit/#d29705d2)
[INFO] [stderr]  Documenting microbit-fun v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: duplicate lang item in crate `panic_halt`: `panic_impl`.
[INFO] [stdout]   |
[INFO] [stdout]   = note: the lang item is first defined in crate `panic_rtt_target` (which `microbit_fun` depends on)
[INFO] [stdout]   = note: first definition in `panic_rtt_target` loaded from /opt/rustwide/target/debug/deps/libpanic_rtt_target-c8eb862a55c1e14c.rmeta
[INFO] [stdout]   = note: second definition in `panic_halt` loaded from /opt/rustwide/target/debug/deps/libpanic_halt-8e0ecb18292def22.rmeta
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not document `microbit-fun`
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name microbit_fun src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items '-Arustdoc::private-intra-doc-links' -C metadata=6ca300d0a95223e8 -L dependency=/opt/rustwide/target/debug/deps --extern cortex_m=/opt/rustwide/target/debug/deps/libcortex_m-ea33e72a5dd875a3.rmeta --extern cortex_m_rt=/opt/rustwide/target/debug/deps/libcortex_m_rt-062ab87208414579.rmeta --extern embedded_hal=/opt/rustwide/target/debug/deps/libembedded_hal-831982e4a270df40.rmeta --extern heapless=/opt/rustwide/target/debug/deps/libheapless-42a09ef07830b87e.rmeta --extern microbit=/opt/rustwide/target/debug/deps/libmicrobit-09e16f0ee54154a3.rmeta --extern nb=/opt/rustwide/target/debug/deps/libnb-7008a47dc8798919.rmeta --extern panic_halt=/opt/rustwide/target/debug/deps/libpanic_halt-8e0ecb18292def22.rmeta --extern panic_rtt_target=/opt/rustwide/target/debug/deps/libpanic_rtt_target-c8eb862a55c1e14c.rmeta --extern rtt_target=/opt/rustwide/target/debug/deps/librtt_target-4684561cd6e65f94.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "2e8efc3910f740094dd7f794a09ba864131c275f3b9f5d6201b5c55654bb0b65", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e8efc3910f740094dd7f794a09ba864131c275f3b9f5d6201b5c55654bb0b65", kill_on_drop: false }`
[INFO] [stdout] 2e8efc3910f740094dd7f794a09ba864131c275f3b9f5d6201b5c55654bb0b65