[INFO] cloning repository https://github.com/khollbach/microbit-blinky
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/khollbach/microbit-blinky" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkhollbach%2Fmicrobit-blinky", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkhollbach%2Fmicrobit-blinky'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 971017476c9d2bd0efd4105f2d662007ba78e3af
[INFO] testing khollbach/microbit-blinky against master#ec6f9a5b4413f74386267ef8efc93712c2ce6db6 for pr-155739-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkhollbach%2Fmicrobit-blinky" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-1-tc1/source/.cargo/config
[INFO] started tweaking git repo https://github.com/khollbach/microbit-blinky
[INFO] finished tweaking git repo https://github.com/khollbach/microbit-blinky
[INFO] tweaked toml for git repo https://github.com/khollbach/microbit-blinky written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/khollbach/microbit-blinky on toolchain ec6f9a5b4413f74386267ef8efc93712c2ce6db6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/khollbach/microbit-blinky 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" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ufmt-write v0.1.0
[INFO] [stderr]   Downloaded rtt-target v0.4.0
[INFO] [stderr]   Downloaded rtt-target v0.3.1
[INFO] [stderr]   Downloaded critical-section v1.1.2
[INFO] [stderr]   Downloaded panic-rtt-target v0.1.2
[INFO] [stderr]   Downloaded panic-halt v0.2.0
[INFO] [stderr]   Downloaded embedded-dma v0.1.2
[INFO] [stderr]   Downloaded microbit-common v0.13.0
[INFO] [stderr]   Downloaded embedded-storage v0.2.0
[INFO] [stderr]   Downloaded microbit-v2 v0.13.0
[INFO] [stderr]   Downloaded nrf52833-hal v0.14.1
[INFO] [stderr]   Downloaded critical-section v0.2.8
[INFO] [stderr]   Downloaded tiny-led-matrix v1.0.2
[INFO] [stderr]   Downloaded cortex-m-rt-macros v0.7.0
[INFO] [stderr]   Downloaded volatile-register v0.2.1
[INFO] [stderr]   Downloaded usb-device v0.2.9
[INFO] [stderr]   Downloaded cortex-m-rt v0.7.3
[INFO] [stderr]   Downloaded nrf-usbd v0.1.1
[INFO] [stderr]   Downloaded nrf-hal-common v0.14.1
[INFO] [stderr]   Downloaded fixed v1.24.0
[INFO] [stderr]   Downloaded nrf52833-pac v0.10.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a504e8170e87eba0bc3cc43061d85837fa628dde1695f756fabdd323bae203dc
[INFO] running `Command { std: "docker" "start" "-a" "a504e8170e87eba0bc3cc43061d85837fa628dde1695f756fabdd323bae203dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a504e8170e87eba0bc3cc43061d85837fa628dde1695f756fabdd323bae203dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a504e8170e87eba0bc3cc43061d85837fa628dde1695f756fabdd323bae203dc", kill_on_drop: false }`
[INFO] [stdout] a504e8170e87eba0bc3cc43061d85837fa628dde1695f756fabdd323bae203dc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] df4db7cf1c09e8eae10a6873c793565540aec771427dbde52cee900aa78d67cb
[INFO] running `Command { std: "docker" "start" "-a" "df4db7cf1c09e8eae10a6873c793565540aec771427dbde52cee900aa78d67cb", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.67
[INFO] [stderr]    Compiling cortex-m v0.7.7
[INFO] [stderr]    Compiling nb v1.1.0
[INFO] [stderr]    Compiling critical-section v1.1.2
[INFO] [stderr]    Compiling vcell v0.1.3
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling syn v1.0.109
[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 fixed v1.24.0
[INFO] [stderr]    Compiling bare-metal v1.0.0
[INFO] [stderr]    Compiling nrf52833-pac v0.10.1
[INFO] [stderr]    Compiling half v2.3.1
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]    Compiling nrf-hal-common v0.14.1
[INFO] [stderr]    Compiling nb v0.1.3
[INFO] [stderr]    Compiling volatile-register v0.2.1
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling critical-section v0.2.8
[INFO] [stderr]    Compiling bytemuck v1.14.0
[INFO] [stderr]    Compiling embedded-hal v0.2.7
[INFO] [stderr]    Compiling usb-device v0.2.9
[INFO] [stderr]    Compiling cast v0.3.0
[INFO] [stderr]    Compiling embedded-storage v0.2.0
[INFO] [stderr]    Compiling embedded-dma v0.1.2
[INFO] [stderr]    Compiling nrf52833-hal v0.14.1
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling ufmt-write v0.1.0
[INFO] [stderr]    Compiling tiny-led-matrix v1.0.2
[INFO] [stderr]    Compiling rtt-target v0.3.1
[INFO] [stderr]    Compiling rtt-target v0.4.0
[INFO] [stderr]    Compiling panic-halt v0.2.0
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling nrf-usbd v0.1.1
[INFO] [stderr]    Compiling panic-rtt-target v0.1.2
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.7.0
[INFO] [stderr]    Compiling microbit-common v0.13.0
[INFO] [stderr]    Compiling microbit-v2 v0.13.0
[INFO] [stderr]    Compiling microbit-blinky 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] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let mut col1 = board.display_pins.col1;
[INFO] [stdout]    |         ----^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:37:13
[INFO] [stdout]    |
[INFO] [stdout] 37 |         let mut outclr: *mut u32 = (base + offset) as *mut u32;
[INFO] [stdout]    |             ----^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `col1`
[INFO] [stdout]   --> src/main.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let mut col1 = board.display_pins.col1;
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_col1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `microbit-blinky` (bin "microbit-blinky") due to 1 previous error; 3 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "df4db7cf1c09e8eae10a6873c793565540aec771427dbde52cee900aa78d67cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df4db7cf1c09e8eae10a6873c793565540aec771427dbde52cee900aa78d67cb", kill_on_drop: false }`
[INFO] [stdout] df4db7cf1c09e8eae10a6873c793565540aec771427dbde52cee900aa78d67cb
