[INFO] cloning repository https://github.com/f0x52/stm32_apa102
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/f0x52/stm32_apa102" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ff0x52%2Fstm32_apa102", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ff0x52%2Fstm32_apa102'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5ccf1ffc555b93abcaccf1663b129f359356a2f2
[INFO] testing f0x52/stm32_apa102 against master#cdb45c87e2cd43495379f7e867e3cc15dcee9f93 for pr-145838-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ff0x52%2Fstm32_apa102" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-2-tc1/source/.cargo/config
[INFO] started tweaking git repo https://github.com/f0x52/stm32_apa102
[INFO] finished tweaking git repo https://github.com/f0x52/stm32_apa102
[INFO] tweaked toml for git repo https://github.com/f0x52/stm32_apa102 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/f0x52/stm32_apa102 on toolchain cdb45c87e2cd43495379f7e867e3cc15dcee9f93
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/f0x52/stm32_apa102 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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/smart-leds-rs/apa102-spi-rs`
[INFO] [stderr]     Updating git repository `https://github.com/smart-leds-rs/smart-leds`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Updating git repository `https://github.com/smart-leds-rs/ws2812-spi-rs`
[INFO] [stderr]     Updating git repository `https://github.com/smart-leds-rs/ws2812-timer-delay-rs`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded smart-leds-trait v0.1.0
[INFO] [stderr]   Downloaded stm32f1xx-hal v0.2.1
[INFO] [stderr]   Downloaded cortex-m v0.5.8
[INFO] [stderr]   Downloaded cast v0.2.2
[INFO] [stderr]   Downloaded aligned v0.2.0
[INFO] [stderr]   Downloaded embedded-hal v0.2.2
[INFO] [stderr]   Downloaded bare-metal v0.2.4
[INFO] [stderr]   Downloaded nb v0.1.1
[INFO] [stderr]   Downloaded cortex-m-rt v0.6.7
[INFO] [stderr]   Downloaded vcell v0.1.0
[INFO] [stderr]   Downloaded stm32f1 v0.6.0
[INFO] [stderr]   Downloaded cortex-m-rt-macros v0.1.5
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 803c126fa06c44b5e9fc5142b9f794e11b5e3e634ca1ed5f09de549836499c51
[INFO] running `Command { std: "docker" "start" "-a" "803c126fa06c44b5e9fc5142b9f794e11b5e3e634ca1ed5f09de549836499c51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "803c126fa06c44b5e9fc5142b9f794e11b5e3e634ca1ed5f09de549836499c51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "803c126fa06c44b5e9fc5142b9f794e11b5e3e634ca1ed5f09de549836499c51", kill_on_drop: false }`
[INFO] [stdout] 803c126fa06c44b5e9fc5142b9f794e11b5e3e634ca1ed5f09de549836499c51
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c1c108bf61041b8d23e76c9cd1aadf18ddfb030297caf8fed63dba4d886d506c
[INFO] running `Command { std: "docker" "start" "-a" "c1c108bf61041b8d23e76c9cd1aadf18ddfb030297caf8fed63dba4d886d506c", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.27
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling rand_core v0.4.0
[INFO] [stderr]    Compiling syn v0.15.29
[INFO] [stderr]    Compiling nb v0.1.1
[INFO] [stderr]    Compiling smart-leds-trait v0.1.0
[INFO] [stderr]    Compiling cortex-m v0.5.8
[INFO] [stderr]    Compiling cortex-m-rt v0.6.7
[INFO] [stderr]    Compiling vcell v0.1.0
[INFO] [stderr]    Compiling aligned v0.2.0
[INFO] [stderr]    Compiling stm32f1 v0.6.0
[INFO] [stderr]    Compiling cast v0.2.2
[INFO] [stderr]    Compiling bare-metal v0.2.4
[INFO] [stderr]    Compiling embedded-hal v0.2.2
[INFO] [stderr]    Compiling volatile-register v0.2.0
[INFO] [stderr]    Compiling smart-leds v0.1.0 (https://github.com/smart-leds-rs/smart-leds#e836e0d6)
[INFO] [stderr]    Compiling ws2812-spi v0.1.0 (https://github.com/smart-leds-rs/ws2812-spi-rs#ecee6261)
[INFO] [stderr]    Compiling ws2812-timer-delay v0.1.0 (https://github.com/smart-leds-rs/ws2812-timer-delay-rs#694ceab8)
[INFO] [stderr]    Compiling apa102-spi v0.1.0 (https://github.com/smart-leds-rs/apa102-spi-rs#2620dcb6)
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand v0.5.6
[INFO] [stderr]    Compiling quote v0.6.11
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.1.5
[INFO] [stderr]    Compiling stm32f1xx-hal v0.2.1
[INFO] [stderr]    Compiling stm32_apa102 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: unused variable: `up`
[INFO] [stdout]   --> src/main.rs:51:17
[INFO] [stdout]    |
[INFO] [stdout] 51 |         let mut up = true;
[INFO] [stdout]    |                 ^^ help: if this is intentional, prefix it with an underscore: `_up`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (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:51:13
[INFO] [stdout]    |
[INFO] [stdout] 51 |         let mut up = true;
[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] [stderr] error: could not compile `stm32_apa102` (bin "stm32_apa102") due to 1 previous error; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "c1c108bf61041b8d23e76c9cd1aadf18ddfb030297caf8fed63dba4d886d506c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1c108bf61041b8d23e76c9cd1aadf18ddfb030297caf8fed63dba4d886d506c", kill_on_drop: false }`
[INFO] [stdout] c1c108bf61041b8d23e76c9cd1aadf18ddfb030297caf8fed63dba4d886d506c