[INFO] cloning repository https://github.com/IDEDARY/Microbit
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/IDEDARY/Microbit" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIDEDARY%2FMicrobit", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIDEDARY%2FMicrobit'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 03f948fd1b984561df8446356d97cec338b302fb
[INFO] building IDEDARY/Microbit against master#ad211ced81509462cdfe4c29ed10f97279a0acae for pr-135216
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIDEDARY%2FMicrobit" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/IDEDARY/Microbit on toolchain ad211ced81509462cdfe4c29ed10f97279a0acae
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-2-tc1/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/IDEDARY/Microbit
[INFO] finished tweaking git repo https://github.com/IDEDARY/Microbit
[INFO] tweaked toml for git repo https://github.com/IDEDARY/Microbit written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/IDEDARY/Microbit 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" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded nrf-hal-common v0.18.0
[INFO] [stderr]   Downloaded nrf51-hal v0.18.0
[INFO] [stderr]   Downloaded tiny-led-matrix v1.0.2
[INFO] [stderr]   Downloaded tinyrand v0.5.0
[INFO] [stderr]   Downloaded rtt-target v0.3.1
[INFO] [stderr]   Downloaded panic-rtt-target v0.1.2
[INFO] [stderr]   Downloaded nrf51-pac v0.12.2
[INFO] [stderr]   Downloaded microbit-common v0.15.0
[INFO] [stderr]   Downloaded microbit v0.15.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 397552e80d2b0156d530dda2e929b649c8af531a7e5180dc81040e65d25db327
[INFO] running `Command { std: "docker" "start" "-a" "397552e80d2b0156d530dda2e929b649c8af531a7e5180dc81040e65d25db327", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "397552e80d2b0156d530dda2e929b649c8af531a7e5180dc81040e65d25db327", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "397552e80d2b0156d530dda2e929b649c8af531a7e5180dc81040e65d25db327", kill_on_drop: false }`
[INFO] [stdout] 397552e80d2b0156d530dda2e929b649c8af531a7e5180dc81040e65d25db327
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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=forbid" "-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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cf55568cbaa866646cc2de29128f35c9c00f8043e7c380017668b4a788411136
[INFO] running `Command { std: "docker" "start" "-a" "cf55568cbaa866646cc2de29128f35c9c00f8043e7c380017668b4a788411136", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling cortex-m v0.7.7
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling nb v1.1.0
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling vcell v0.1.3
[INFO] [stderr]    Compiling cortex-m-rt v0.7.3
[INFO] [stderr]    Compiling bitfield v0.13.2
[INFO] [stderr]    Compiling az v1.2.1
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling nrf51-pac v0.12.2
[INFO] [stderr]    Compiling fixed v1.27.0
[INFO] [stderr]    Compiling half v2.4.1
[INFO] [stderr]    Compiling nrf-hal-common v0.18.0
[INFO] [stderr]    Compiling bytemuck v1.16.1
[INFO] [stderr]    Compiling embedded-io v0.6.1
[INFO] [stderr]    Compiling nb v0.1.3
[INFO] [stderr]    Compiling volatile-register v0.2.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling embedded-dma v0.2.0
[INFO] [stderr]    Compiling embedded-storage v0.3.1
[INFO] [stderr]    Compiling embedded-hal v0.2.7
[INFO] [stderr]    Compiling embedded-hal v1.0.0
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling cast v0.3.0
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling nrf51-hal v0.18.0
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling heapless v0.8.0
[INFO] [stderr]    Compiling tiny-led-matrix v1.0.2
[INFO] [stderr]    Compiling ufmt-write v0.1.0
[INFO] [stderr]    Compiling microbit v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling tinyrand v0.5.0
[INFO] [stderr]    Compiling panic-halt v0.2.0
[INFO] [stderr]    Compiling hash32 v0.3.1
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling rtt-target v0.3.1
[INFO] [stderr]    Compiling panic-rtt-target v0.1.2
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.7.0
[INFO] [stderr]    Compiling microbit-common v0.15.0
[INFO] [stderr]    Compiling microbit v0.15.0
[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 `microbit` (bin "microbit") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "cf55568cbaa866646cc2de29128f35c9c00f8043e7c380017668b4a788411136", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf55568cbaa866646cc2de29128f35c9c00f8043e7c380017668b4a788411136", kill_on_drop: false }`
[INFO] [stdout] cf55568cbaa866646cc2de29128f35c9c00f8043e7c380017668b4a788411136
