[INFO] updating cached repository ThatsGobbles/fft-analyzer
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ThatsGobbles/fft-analyzer
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ThatsGobbles/fft-analyzer" "work/ex/beta-1.38-1/sources/1.37.0/gh/ThatsGobbles/fft-analyzer"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/ThatsGobbles/fft-analyzer'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ThatsGobbles/fft-analyzer" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ThatsGobbles/fft-analyzer"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ThatsGobbles/fft-analyzer'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0f40b95b65090705a551f421d40e509e9476e243
[INFO] sha for GitHub repo ThatsGobbles/fft-analyzer: 0f40b95b65090705a551f421d40e509e9476e243
[INFO] validating manifest of ThatsGobbles/fft-analyzer on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ThatsGobbles/fft-analyzer on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ThatsGobbles/fft-analyzer
[INFO] finished frobbing ThatsGobbles/fft-analyzer
[INFO] frobbed toml for ThatsGobbles/fft-analyzer written to work/ex/beta-1.38-1/sources/1.37.0/gh/ThatsGobbles/fft-analyzer/Cargo.toml
[INFO] started frobbing ThatsGobbles/fft-analyzer
[INFO] finished frobbing ThatsGobbles/fft-analyzer
[INFO] frobbed toml for ThatsGobbles/fft-analyzer written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ThatsGobbles/fft-analyzer/Cargo.toml
[INFO] crate ThatsGobbles/fft-analyzer already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing ThatsGobbles/fft-analyzer against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/ThatsGobbles/fft-analyzer:/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=warn" "-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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 43e76d9d77ed13f10a207400f9dbf3df93178c3abbb030a08cb117cf3b2ddc1a
[INFO] running `"docker" "start" "-a" "43e76d9d77ed13f10a207400f9dbf3df93178c3abbb030a08cb117cf3b2ddc1a"`
[INFO] [stderr]    Compiling transpose v0.1.0
[INFO] [stderr]    Compiling strength_reduce v0.2.2
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]    Compiling rustfft v3.0.0
[INFO] [stderr]    Compiling fft-analyzer v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `endpoints`
[INFO] [stderr]    --> src/main.rs:181:9
[INFO] [stderr]     |
[INFO] [stderr] 181 |     let endpoints =
[INFO] [stderr]     |         ^^^^^^^^^ help: consider prefixing with an underscore: `_endpoints`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `num_bands`
[INFO] [stderr]    --> src/main.rs:269:53
[INFO] [stderr]     |
[INFO] [stderr] 269 | fn separate_freq_bands(fft_output: &[Complex<f32>], num_bands: usize, output_buffer: &mut [f32]) -> Result<(), &'static str> {
[INFO] [stderr]     |                                                     ^^^^^^^^^ help: consider prefixing with an underscore: `_num_bands`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `locate_band_for_freq`
[INFO] [stderr]    --> src/main.rs:137:1
[INFO] [stderr]     |
[INFO] [stderr] 137 | fn locate_band_for_freq(target_freq: u32, band_intervals: &[f32]) -> Option<usize> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `separate_freq_bands`
[INFO] [stderr]    --> src/main.rs:269:1
[INFO] [stderr]     |
[INFO] [stderr] 269 | fn separate_freq_bands(fft_output: &[Complex<f32>], num_bands: usize, output_buffer: &mut [f32]) -> Result<(), &'static str> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.56s
[INFO] running `"docker" "inspect" "43e76d9d77ed13f10a207400f9dbf3df93178c3abbb030a08cb117cf3b2ddc1a"`
[INFO] running `"docker" "rm" "-f" "43e76d9d77ed13f10a207400f9dbf3df93178c3abbb030a08cb117cf3b2ddc1a"`
[INFO] [stdout] 43e76d9d77ed13f10a207400f9dbf3df93178c3abbb030a08cb117cf3b2ddc1a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/ThatsGobbles/fft-analyzer:/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=warn" "-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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] b244951cf5864b5e92860c0c8e3baf0fcf7c975b3022ee88ef797ba45e56379f
[INFO] running `"docker" "start" "-a" "b244951cf5864b5e92860c0c8e3baf0fcf7c975b3022ee88ef797ba45e56379f"`
[INFO] [stderr]    Compiling fft-analyzer v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `endpoints`
[INFO] [stderr]    --> src/main.rs:181:9
[INFO] [stderr]     |
[INFO] [stderr] 181 |     let endpoints =
[INFO] [stderr]     |         ^^^^^^^^^ help: consider prefixing with an underscore: `_endpoints`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `num_bands`
[INFO] [stderr]    --> src/main.rs:269:53
[INFO] [stderr]     |
[INFO] [stderr] 269 | fn separate_freq_bands(fft_output: &[Complex<f32>], num_bands: usize, output_buffer: &mut [f32]) -> Result<(), &'static str> {
[INFO] [stderr]     |                                                     ^^^^^^^^^ help: consider prefixing with an underscore: `_num_bands`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `locate_band_for_freq`
[INFO] [stderr]    --> src/main.rs:137:1
[INFO] [stderr]     |
[INFO] [stderr] 137 | fn locate_band_for_freq(target_freq: u32, band_intervals: &[f32]) -> Option<usize> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `separate_freq_bands`
[INFO] [stderr]    --> src/main.rs:269:1
[INFO] [stderr]     |
[INFO] [stderr] 269 | fn separate_freq_bands(fft_output: &[Complex<f32>], num_bands: usize, output_buffer: &mut [f32]) -> Result<(), &'static str> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.85s
[INFO] running `"docker" "inspect" "b244951cf5864b5e92860c0c8e3baf0fcf7c975b3022ee88ef797ba45e56379f"`
[INFO] running `"docker" "rm" "-f" "b244951cf5864b5e92860c0c8e3baf0fcf7c975b3022ee88ef797ba45e56379f"`
[INFO] [stdout] b244951cf5864b5e92860c0c8e3baf0fcf7c975b3022ee88ef797ba45e56379f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/ThatsGobbles/fft-analyzer:/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=warn" "-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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 141194af2d9267d6a76d928f9230e40398f70d7d8065e6796fb5606e5b971043
[INFO] running `"docker" "start" "-a" "141194af2d9267d6a76d928f9230e40398f70d7d8065e6796fb5606e5b971043"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/fft_analyzer-eba926949904b5e8
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "141194af2d9267d6a76d928f9230e40398f70d7d8065e6796fb5606e5b971043"`
[INFO] running `"docker" "rm" "-f" "141194af2d9267d6a76d928f9230e40398f70d7d8065e6796fb5606e5b971043"`
[INFO] [stdout] 141194af2d9267d6a76d928f9230e40398f70d7d8065e6796fb5606e5b971043