[INFO] fetching crate ws2812-nop-imxrt1062 0.2.0...
[INFO] testing ws2812-nop-imxrt1062-0.2.0 against 1.91.0 for beta-1.92-2
[INFO] extracting crate ws2812-nop-imxrt1062 0.2.0 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate ws2812-nop-imxrt1062 0.2.0
[INFO] finished tweaking crates.io crate ws2812-nop-imxrt1062 0.2.0
[INFO] tweaked toml for crates.io crate ws2812-nop-imxrt1062 0.2.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate ws2812-nop-imxrt1062 0.2.0 on toolchain 1.91.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 7 packages to latest compatible versions
[INFO] [stderr]       Adding embedded-hal v0.2.7 (available: v1.0.0)
[INFO] [stderr]       Adding smart-leds-trait v0.2.1 (available: v0.3.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded nb v0.1.3
[INFO] [stderr]   Downloaded embedded-hal v0.2.7
[INFO] [stderr]   Downloaded nb v1.1.0
[INFO] [stderr]   Downloaded rgb v0.8.52
[INFO] [stderr]   Downloaded smart-leds-trait v0.2.1
[INFO] [stderr]   Downloaded void v1.0.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d6e6d3efd5c145ff398103680ba17665cb9771ba0d63b5b81bbe31038c27e91f
[INFO] running `Command { std: "docker" "start" "-a" "d6e6d3efd5c145ff398103680ba17665cb9771ba0d63b5b81bbe31038c27e91f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d6e6d3efd5c145ff398103680ba17665cb9771ba0d63b5b81bbe31038c27e91f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6e6d3efd5c145ff398103680ba17665cb9771ba0d63b5b81bbe31038c27e91f", kill_on_drop: false }`
[INFO] [stdout] d6e6d3efd5c145ff398103680ba17665cb9771ba0d63b5b81bbe31038c27e91f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] af10f8f2dd9e26d5745f5c86e3afa3950a81c4b6560a6a8f1640d1a16a4fe3d6
[INFO] running `Command { std: "docker" "start" "-a" "af10f8f2dd9e26d5745f5c86e3afa3950a81c4b6560a6a8f1640d1a16a4fe3d6", kill_on_drop: false }`
[INFO] [stderr]    Compiling bytemuck v1.24.0
[INFO] [stderr]    Compiling nb v1.1.0
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling nb v0.1.3
[INFO] [stderr]    Compiling embedded-hal v0.2.7
[INFO] [stderr]    Compiling rgb v0.8.52
[INFO] [stderr]    Compiling smart-leds-trait v0.2.1
[INFO] [stderr]    Compiling ws2812-nop-imxrt1062 v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(const_fn_floating_point_arithmetic)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `const_fn_floating_point_arithmetic` has been stable since `1.82.0` and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `const_fn_floating_point_arithmetic` has been stable since 1.82.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(const_fn_floating_point_arithmetic)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: formatting may not be suitable for sub-register argument
[INFO] [stdout]    --> src/lib.rs:112:30
[INFO] [stdout]     |
[INFO] [stdout] 112 |                 "mov     r2, {0}",
[INFO] [stdout]     |                              ^^^
[INFO] [stdout] ...
[INFO] [stdout] 121 |                 in(reg) loops
[INFO] [stdout]     |                         ----- for this argument
[INFO] [stdout]     |
[INFO] [stdout]     = help: use `{0:e}` to have the register formatted as `eax` (for 32-bit values)
[INFO] [stdout]     = help: or use `{0:r}` to keep the default formatting of `rax` (for 64-bit values)
[INFO] [stdout]     = note: `#[warn(asm_sub_register)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ws2812-nop-imxrt1062` (lib) due to 1 previous error; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "af10f8f2dd9e26d5745f5c86e3afa3950a81c4b6560a6a8f1640d1a16a4fe3d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af10f8f2dd9e26d5745f5c86e3afa3950a81c4b6560a6a8f1640d1a16a4fe3d6", kill_on_drop: false }`
[INFO] [stdout] af10f8f2dd9e26d5745f5c86e3afa3950a81c4b6560a6a8f1640d1a16a4fe3d6