[INFO] cloning repository https://github.com/jaysabe-dev/mb2_hue_change
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jaysabe-dev/mb2_hue_change" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjaysabe-dev%2Fmb2_hue_change", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjaysabe-dev%2Fmb2_hue_change'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 72b9b55cc83352cfc9c9b0cdd9ec3b99f5a902d7
[INFO] testing jaysabe-dev/mb2_hue_change against beta-2026-04-21 for beta-1.96-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjaysabe-dev%2Fmb2_hue_change" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-3-tc2/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/jaysabe-dev/mb2_hue_change
[INFO] finished tweaking git repo https://github.com/jaysabe-dev/mb2_hue_change
[INFO] tweaked toml for git repo https://github.com/jaysabe-dev/mb2_hue_change written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jaysabe-dev/mb2_hue_change on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/jaysabe-dev/mb2_hue_change already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bb7937f39f98fc4a24c18cd398253da05502d034b50be0bca48a0d898782f800
[INFO] running `Command { std: "docker" "start" "-a" "bb7937f39f98fc4a24c18cd398253da05502d034b50be0bca48a0d898782f800", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bb7937f39f98fc4a24c18cd398253da05502d034b50be0bca48a0d898782f800", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb7937f39f98fc4a24c18cd398253da05502d034b50be0bca48a0d898782f800", kill_on_drop: false }`
[INFO] [stdout] bb7937f39f98fc4a24c18cd398253da05502d034b50be0bca48a0d898782f800
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "RUSTFLAGS=--cap-lints=warn" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c52b051baac2b1d0c65bf605e8534f585025de474e6ba486b7358c4a22bcd2fc
[INFO] running `Command { std: "docker" "start" "-a" "c52b051baac2b1d0c65bf605e8534f585025de474e6ba486b7358c4a22bcd2fc", kill_on_drop: false }`
[INFO] [stderr]    Compiling cortex-m v0.7.7
[INFO] [stderr]    Compiling nb v1.1.0
[INFO] [stderr]    Compiling portable-atomic v1.13.1
[INFO] [stderr]    Compiling critical-section v1.2.0
[INFO] [stderr]    Compiling vcell v0.1.3
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling zerocopy v0.8.39
[INFO] [stderr]    Compiling heapless v0.8.0
[INFO] [stderr]    Compiling cortex-m-rt v0.7.5
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling bitfield v0.13.2
[INFO] [stderr]    Compiling quote v1.0.44
[INFO] [stderr]    Compiling fixed v1.30.0
[INFO] [stderr]    Compiling nrf52833-pac v0.12.2
[INFO] [stderr]    Compiling embedded-hal v1.0.0
[INFO] [stderr]    Compiling bytemuck v1.25.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling volatile-register v0.2.2
[INFO] [stderr]    Compiling nb v0.1.3
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling embedded-hal v0.2.7
[INFO] [stderr]    Compiling az v1.3.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling nrf-hal-common v0.19.0
[INFO] [stderr]    Compiling proc-macro-utils v0.10.0
[INFO] [stderr]    Compiling hash32 v0.3.1
[INFO] [stderr]    Compiling embedded-dma v0.2.0
[INFO] [stderr]    Compiling embedded-storage v0.3.1
[INFO] [stderr]    Compiling pulldown-cmark v0.11.3
[INFO] [stderr]    Compiling cast v0.3.0
[INFO] [stderr]    Compiling rand_core v0.9.5
[INFO] [stderr]    Compiling embedded-io v0.7.1
[INFO] [stderr]    Compiling nrf52833-hal v0.19.0
[INFO] [stderr]    Compiling unicase v2.9.0
[INFO] [stderr]    Compiling bitflags v2.11.0
[INFO] [stderr]    Compiling tiny-led-matrix v1.0.2
[INFO] [stderr]    Compiling ufmt-write v0.1.0
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]    Compiling manyhow-macros v0.11.4
[INFO] [stderr]    Compiling usb-device v0.3.2
[INFO] [stderr]    Compiling rtt-target v0.6.2
[INFO] [stderr]    Compiling panic-rtt-target v0.2.0
[INFO] [stderr]    Compiling nrf-usbd v0.3.0
[INFO] [stderr]    Compiling manyhow v0.11.4
[INFO] [stderr]    Compiling zerocopy-derive v0.8.39
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.7.5
[INFO] [stderr]    Compiling maybe-async-cfg v0.2.5
[INFO] [stderr]    Compiling lsm303agr v1.1.0
[INFO] [stderr]    Compiling half v2.7.1
[INFO] [stderr]    Compiling microbit-common v0.16.0
[INFO] [stderr]    Compiling microbit-v2 v0.16.0
[INFO] [stderr]    Compiling mb2_hue_change v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: unwinding panics are not supported without std
[INFO] [stdout]   |
[INFO] [stdout]   = help: using nightly cargo, use -Zbuild-std with panic="abort" to avoid unwinding
[INFO] [stdout]   = note: since the core library is usually precompiled with panic="unwind", rebuilding your crate with panic="abort" may not be enough to fix the problem
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mb2_hue_change` (bin "mb2_hue_change") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "c52b051baac2b1d0c65bf605e8534f585025de474e6ba486b7358c4a22bcd2fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c52b051baac2b1d0c65bf605e8534f585025de474e6ba486b7358c4a22bcd2fc", kill_on_drop: false }`
[INFO] [stdout] c52b051baac2b1d0c65bf605e8534f585025de474e6ba486b7358c4a22bcd2fc
