[INFO] updating cached repository themultiplexer/rust-fft-spectrum
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/themultiplexer/rust-fft-spectrum
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/themultiplexer/rust-fft-spectrum" "work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/themultiplexer/rust-fft-spectrum"`
[INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/themultiplexer/rust-fft-spectrum'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/themultiplexer/rust-fft-spectrum" "work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/themultiplexer/rust-fft-spectrum"`
[INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/themultiplexer/rust-fft-spectrum'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c0872271d35a0de16eaca62af1fbcbd6c461aa7e
[INFO] sha for GitHub repo themultiplexer/rust-fft-spectrum: c0872271d35a0de16eaca62af1fbcbd6c461aa7e
[INFO] validating manifest of themultiplexer/rust-fft-spectrum on toolchain master#452087b4bf18cece2d52d7cd8c9147195e5404bf
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of themultiplexer/rust-fft-spectrum on toolchain try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing themultiplexer/rust-fft-spectrum
[INFO] finished frobbing themultiplexer/rust-fft-spectrum
[INFO] frobbed toml for themultiplexer/rust-fft-spectrum written to work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/themultiplexer/rust-fft-spectrum/Cargo.toml
[INFO] started frobbing themultiplexer/rust-fft-spectrum
[INFO] finished frobbing themultiplexer/rust-fft-spectrum
[INFO] frobbed toml for themultiplexer/rust-fft-spectrum written to work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/themultiplexer/rust-fft-spectrum/Cargo.toml
[INFO] crate themultiplexer/rust-fft-spectrum already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking themultiplexer/rust-fft-spectrum against master#452087b4bf18cece2d52d7cd8c9147195e5404bf for pr-63247
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63247/worker-2/master#452087b4bf18cece2d52d7cd8c9147195e5404bf:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/themultiplexer/rust-fft-spectrum:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 5db8f6aea1de41b9a8c1e1a6ffea9cfdd576c903cbfdc8a0f9161f2c33b5e17d
[INFO] running `"docker" "start" "-a" "5db8f6aea1de41b9a8c1e1a6ffea9cfdd576c903cbfdc8a0f9161f2c33b5e17d"`
[INFO] [stderr]    Compiling num-complex v0.2.1
[INFO] [stderr]     Checking nb v0.1.1
[INFO] [stderr]     Checking cast v0.2.2
[INFO] [stderr]     Checking transpose v0.1.0
[INFO] [stderr]     Checking strength_reduce v0.2.1
[INFO] [stderr]     Checking nix v0.11.0
[INFO] [stderr]     Checking nix v0.10.0
[INFO] [stderr]     Checking nix v0.6.0
[INFO] [stderr]     Checking embedded-hal v0.2.2
[INFO] [stderr]     Checking ads1x1x v0.1.0
[INFO] [stderr]     Checking rustfft v3.0.0
[INFO] [stderr]     Checking spidev v0.3.0
[INFO] [stderr]     Checking i2cdev v0.4.1
[INFO] [stderr]     Checking sysfs_gpio v0.5.3
[INFO] [stderr]     Checking rust_gpiozero v0.1.0
[INFO] [stderr]     Checking linux-embedded-hal v0.2.2
[INFO] [stderr]     Checking fft v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused imports: `thread`, `time`
[INFO] [stderr]  --> src/main.rs:7:11
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::{thread, time};
[INFO] [stderr]   |           ^^^^^^  ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `thread`, `time`
[INFO] [stderr]  --> src/main.rs:7:11
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::{thread, time};
[INFO] [stderr]   |           ^^^^^^  ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]   --> src/main.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     let _dev = adc.destroy_ads1115();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]   --> src/main.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     let _dev = adc.destroy_ads1115();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.28s
[INFO] running `"docker" "inspect" "5db8f6aea1de41b9a8c1e1a6ffea9cfdd576c903cbfdc8a0f9161f2c33b5e17d"`
[INFO] running `"docker" "rm" "-f" "5db8f6aea1de41b9a8c1e1a6ffea9cfdd576c903cbfdc8a0f9161f2c33b5e17d"`
[INFO] [stdout] 5db8f6aea1de41b9a8c1e1a6ffea9cfdd576c903cbfdc8a0f9161f2c33b5e17d