[INFO] updating cached repository https://github.com/wilsoniya/spectralizer-rs
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 6e6baaeaa5aa71e4b1f87ee625a4893811284684
[INFO] testing wilsoniya/spectralizer-rs against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwilsoniya%2Fspectralizer-rs" "work/builds/worker-6/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wilsoniya/spectralizer-rs on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/wilsoniya/spectralizer-rs
[INFO] finished tweaking git repo https://github.com/wilsoniya/spectralizer-rs
[INFO] tweaked toml for git repo https://github.com/wilsoniya/spectralizer-rs written to work/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/wilsoniya/spectralizer-rs already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] ec7c75184de0b6a3342748483ee9a7e419aca0c8a1f955a8d7a61284a43e813b
[INFO] running `"docker" "start" "-a" "ec7c75184de0b6a3342748483ee9a7e419aca0c8a1f955a8d7a61284a43e813b"`
[INFO] [stderr]    Compiling num-complex v0.2.1
[INFO] [stderr]    Compiling sdl2-sys v0.32.6
[INFO] [stderr]    Compiling num-bigint v0.2.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling sdl2 v0.32.2
[INFO] [stderr]    Compiling num-rational v0.2.1
[INFO] [stderr]    Compiling num v0.2.0
[INFO] [stderr]    Compiling spectralizer-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: type `pa_simple` should have an upper camel case name
[INFO] [stderr]   --> src/pulse.rs:29:8
[INFO] [stderr]    |
[INFO] [stderr] 29 | struct pa_simple;
[INFO] [stderr]    |        ^^^^^^^^^ help: convert the identifier to upper camel case: `PaSimple`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: type `pa_sample_spec` should have an upper camel case name
[INFO] [stderr]   --> src/pulse.rs:38:8
[INFO] [stderr]    |
[INFO] [stderr] 38 | struct pa_sample_spec {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `PaSampleSpec`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `sdl2::keyboard::Keycode`
[INFO] [stderr]   --> src/vis.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use sdl2::keyboard::Keycode;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `frame_start_ns` is never read
[INFO] [stderr]   --> src/main.rs:34:13
[INFO] [stderr]    |
[INFO] [stderr] 34 |     let mut frame_start_ns: u64 = 0;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `sample_rate`
[INFO] [stderr]   --> src/pulse.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     sample_rate: usize,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `format`
[INFO] [stderr]   --> src/pulse.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     format: c_int,
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `rate`
[INFO] [stderr]   --> src/pulse.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 |     rate: u32,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `channels`
[INFO] [stderr]   --> src/pulse.rs:41:5
[INFO] [stderr]    |
[INFO] [stderr] 41 |     channels: u8
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: static item is never used: `PA_STREAM_NODIRECTION`
[INFO] [stderr]   --> src/pulse.rs:48:1
[INFO] [stderr]    |
[INFO] [stderr] 48 | static PA_STREAM_NODIRECTION: c_int = 0_i32;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: static item is never used: `PA_STREAM_PLAYBACK`
[INFO] [stderr]   --> src/pulse.rs:49:1
[INFO] [stderr]    |
[INFO] [stderr] 49 | static PA_STREAM_PLAYBACK:    c_int = 1_i32;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: static item is never used: `PA_STREAM_UPLOAD`
[INFO] [stderr]   --> src/pulse.rs:51:1
[INFO] [stderr]    |
[INFO] [stderr] 51 | static PA_STREAM_UPLOAD:      c_int = 3_i32;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `SpectralizerError`
[INFO] [stderr]  --> src/errors.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | pub enum SpectralizerError {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `extern` block uses type `pulse::pa_sample_spec` which is not FFI-safe: this struct has unspecified layout
[INFO] [stderr]   --> src/pulse.rs:16:35
[INFO] [stderr]    |
[INFO] [stderr] 16 |                      sample_spec: *mut pa_sample_spec,
[INFO] [stderr]    |                                   ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(improper_ctypes)]` on by default
[INFO] [stderr]    = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
[INFO] [stderr] note: type defined here
[INFO] [stderr]   --> src/pulse.rs:38:1
[INFO] [stderr]    |
[INFO] [stderr] 38 | / struct pa_sample_spec {
[INFO] [stderr] 39 | |     format: c_int,
[INFO] [stderr] 40 | |     rate: u32,
[INFO] [stderr] 41 | |     channels: u8
[INFO] [stderr] 42 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr] 
[INFO] [stderr] warning: `extern` block uses type `pulse::pa_simple` which is not FFI-safe: this struct has unspecified layout
[INFO] [stderr]   --> src/pulse.rs:19:44
[INFO] [stderr]    |
[INFO] [stderr] 19 |                      error: *mut c_int) -> *mut pa_simple;
[INFO] [stderr]    |                                            ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
[INFO] [stderr] note: type defined here
[INFO] [stderr]   --> src/pulse.rs:29:1
[INFO] [stderr]    |
[INFO] [stderr] 29 | struct pa_simple;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `extern` block uses type `pulse::pa_simple` which is not FFI-safe: this struct has unspecified layout
[INFO] [stderr]   --> src/pulse.rs:20:27
[INFO] [stderr]    |
[INFO] [stderr] 20 |     fn pa_simple_read(pa: *mut pa_simple,
[INFO] [stderr]    |                           ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
[INFO] [stderr] note: type defined here
[INFO] [stderr]   --> src/pulse.rs:29:1
[INFO] [stderr]    |
[INFO] [stderr] 29 | struct pa_simple;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `extern` block uses type `pulse::pa_simple` which is not FFI-safe: this struct has unspecified layout
[INFO] [stderr]   --> src/pulse.rs:25:28
[INFO] [stderr]    |
[INFO] [stderr] 25 |     fn pa_simple_flush(pa: *mut pa_simple, error: *mut c_int) -> c_int;
[INFO] [stderr]    |                            ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
[INFO] [stderr] note: type defined here
[INFO] [stderr]   --> src/pulse.rs:29:1
[INFO] [stderr]    |
[INFO] [stderr] 29 | struct pa_simple;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable `X` should have a snake case name
[INFO] [stderr]   --> src/fft.rs:12:28
[INFO] [stderr]    |
[INFO] [stderr] 12 | pub fn real_fft(x: &[f64], X: &mut [f64]) {
[INFO] [stderr]    |                            ^ help: convert the identifier to snake case: `x`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `N` should have a snake case name
[INFO] [stderr]   --> src/fft.rs:27:9
[INFO] [stderr]    |
[INFO] [stderr] 27 |     let N = x.len();
[INFO] [stderr]    |         ^ help: convert the identifier to snake case: `n`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `Nf` should have a snake case name
[INFO] [stderr]   --> src/fft.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 28 |     let Nf = N as f64 - 1.0;
[INFO] [stderr]    |         ^^ help: convert the identifier to snake case: `nf`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `N` should have a snake case name
[INFO] [stderr]   --> src/fft.rs:54:9
[INFO] [stderr]    |
[INFO] [stderr] 54 |     let N = x.len();
[INFO] [stderr]    |         ^ help: convert the identifier to snake case: `n`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `Nf` should have a snake case name
[INFO] [stderr]   --> src/fft.rs:55:9
[INFO] [stderr]    |
[INFO] [stderr] 55 |     let Nf = N as f64;
[INFO] [stderr]    |         ^^ help: convert the identifier to snake case: `nf`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `X` should have a snake case name
[INFO] [stderr]   --> src/fft.rs:56:13
[INFO] [stderr]    |
[INFO] [stderr] 56 |     let mut X: Vec<Complex<f64>> = vec![Complex::new(0.0, 0.0); N];
[INFO] [stderr]    |             ^ help: convert the identifier to snake case: `x`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `X_even` should have a snake case name
[INFO] [stderr]   --> src/fft.rs:73:13
[INFO] [stderr]    |
[INFO] [stderr] 73 |         let X_even = ditfft2(&evens[..]);
[INFO] [stderr]    |             ^^^^^^ help: convert the identifier to snake case: `x_even`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `X_odd` should have a snake case name
[INFO] [stderr]   --> src/fft.rs:74:13
[INFO] [stderr]    |
[INFO] [stderr] 74 |         let X_odd = ditfft2(&odds[..]);
[INFO] [stderr]    |             ^^^^^ help: convert the identifier to snake case: `x_odd`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/vis.rs:62:9
[INFO] [stderr]    |
[INFO] [stderr] 62 |         self.canvas.set_scale(self.scale_x, self.scale_y);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/vis.rs:65:9
[INFO] [stderr]    |
[INFO] [stderr] 65 | /         self.canvas.fill_rect(Rect::new(0, 0, self.win_width,
[INFO] [stderr] 66 | |                                                      self.win_height));
[INFO] [stderr]    | |_______________________________________________________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/vis.rs:88:13
[INFO] [stderr]    |
[INFO] [stderr] 88 |             self.canvas.fill_rect(rect);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.97s
[INFO] running `"docker" "inspect" "ec7c75184de0b6a3342748483ee9a7e419aca0c8a1f955a8d7a61284a43e813b"`
[INFO] running `"docker" "rm" "-f" "ec7c75184de0b6a3342748483ee9a7e419aca0c8a1f955a8d7a61284a43e813b"`
[INFO] [stdout] ec7c75184de0b6a3342748483ee9a7e419aca0c8a1f955a8d7a61284a43e813b
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 6d556fd7f58f8d1245866167a8191f760b26be03d4d130b9483e70d99ff35132
[INFO] running `"docker" "start" "-a" "6d556fd7f58f8d1245866167a8191f760b26be03d4d130b9483e70d99ff35132"`
[INFO] [stderr]    Compiling spectralizer-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: type `pa_simple` should have an upper camel case name
[INFO] [stderr]   --> src/pulse.rs:29:8
[INFO] [stderr]    |
[INFO] [stderr] 29 | struct pa_simple;
[INFO] [stderr]    |        ^^^^^^^^^ help: convert the identifier to upper camel case: `PaSimple`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: type `pa_sample_spec` should have an upper camel case name
[INFO] [stderr]   --> src/pulse.rs:38:8
[INFO] [stderr]    |
[INFO] [stderr] 38 | struct pa_sample_spec {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `PaSampleSpec`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `sdl2::keyboard::Keycode`
[INFO] [stderr]   --> src/vis.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use sdl2::keyboard::Keycode;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `frame_start_ns` is never read
[INFO] [stderr]   --> src/main.rs:34:13
[INFO] [stderr]    |
[INFO] [stderr] 34 |     let mut frame_start_ns: u64 = 0;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `sample_rate`
[INFO] [stderr]   --> src/pulse.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     sample_rate: usize,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `format`
[INFO] [stderr]   --> src/pulse.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     format: c_int,
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `rate`
[INFO] [stderr]   --> src/pulse.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 |     rate: u32,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `channels`
[INFO] [stderr]   --> src/pulse.rs:41:5
[INFO] [stderr]    |
[INFO] [stderr] 41 |     channels: u8
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: static item is never used: `PA_STREAM_NODIRECTION`
[INFO] [stderr]   --> src/pulse.rs:48:1
[INFO] [stderr]    |
[INFO] [stderr] 48 | static PA_STREAM_NODIRECTION: c_int = 0_i32;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: static item is never used: `PA_STREAM_PLAYBACK`
[INFO] [stderr]   --> src/pulse.rs:49:1
[INFO] [stderr]    |
[INFO] [stderr] 49 | static PA_STREAM_PLAYBACK:    c_int = 1_i32;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: static item is never used: `PA_STREAM_UPLOAD`
[INFO] [stderr]   --> src/pulse.rs:51:1
[INFO] [stderr]    |
[INFO] [stderr] 51 | static PA_STREAM_UPLOAD:      c_int = 3_i32;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `SpectralizerError`
[INFO] [stderr]  --> src/errors.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | pub enum SpectralizerError {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `extern` block uses type `pulse::pa_sample_spec` which is not FFI-safe: this struct has unspecified layout
[INFO] [stderr]   --> src/pulse.rs:16:35
[INFO] [stderr]    |
[INFO] [stderr] 16 |                      sample_spec: *mut pa_sample_spec,
[INFO] [stderr]    |                                   ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(improper_ctypes)]` on by default
[INFO] [stderr]    = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
[INFO] [stderr] note: type defined here
[INFO] [stderr]   --> src/pulse.rs:38:1
[INFO] [stderr]    |
[INFO] [stderr] 38 | / struct pa_sample_spec {
[INFO] [stderr] 39 | |     format: c_int,
[INFO] [stderr] 40 | |     rate: u32,
[INFO] [stderr] 41 | |     channels: u8
[INFO] [stderr] 42 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr] 
[INFO] [stderr] warning: `extern` block uses type `pulse::pa_simple` which is not FFI-safe: this struct has unspecified layout
[INFO] [stderr]   --> src/pulse.rs:19:44
[INFO] [stderr]    |
[INFO] [stderr] 19 |                      error: *mut c_int) -> *mut pa_simple;
[INFO] [stderr]    |                                            ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
[INFO] [stderr] note: type defined here
[INFO] [stderr]   --> src/pulse.rs:29:1
[INFO] [stderr]    |
[INFO] [stderr] 29 | struct pa_simple;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `extern` block uses type `pulse::pa_simple` which is not FFI-safe: this struct has unspecified layout
[INFO] [stderr]   --> src/pulse.rs:20:27
[INFO] [stderr]    |
[INFO] [stderr] 20 |     fn pa_simple_read(pa: *mut pa_simple,
[INFO] [stderr]    |                           ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
[INFO] [stderr] note: type defined here
[INFO] [stderr]   --> src/pulse.rs:29:1
[INFO] [stderr]    |
[INFO] [stderr] 29 | struct pa_simple;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `extern` block uses type `pulse::pa_simple` which is not FFI-safe: this struct has unspecified layout
[INFO] [stderr]   --> src/pulse.rs:25:28
[INFO] [stderr]    |
[INFO] [stderr] 25 |     fn pa_simple_flush(pa: *mut pa_simple, error: *mut c_int) -> c_int;
[INFO] [stderr]    |                            ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
[INFO] [stderr] note: type defined here
[INFO] [stderr]   --> src/pulse.rs:29:1
[INFO] [stderr]    |
[INFO] [stderr] 29 | struct pa_simple;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable `X` should have a snake case name
[INFO] [stderr]   --> src/fft.rs:12:28
[INFO] [stderr]    |
[INFO] [stderr] 12 | pub fn real_fft(x: &[f64], X: &mut [f64]) {
[INFO] [stderr]    |                            ^ help: convert the identifier to snake case: `x`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `N` should have a snake case name
[INFO] [stderr]   --> src/fft.rs:27:9
[INFO] [stderr]    |
[INFO] [stderr] 27 |     let N = x.len();
[INFO] [stderr]    |         ^ help: convert the identifier to snake case: `n`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `Nf` should have a snake case name
[INFO] [stderr]   --> src/fft.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 28 |     let Nf = N as f64 - 1.0;
[INFO] [stderr]    |         ^^ help: convert the identifier to snake case: `nf`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `N` should have a snake case name
[INFO] [stderr]   --> src/fft.rs:54:9
[INFO] [stderr]    |
[INFO] [stderr] 54 |     let N = x.len();
[INFO] [stderr]    |         ^ help: convert the identifier to snake case: `n`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `Nf` should have a snake case name
[INFO] [stderr]   --> src/fft.rs:55:9
[INFO] [stderr]    |
[INFO] [stderr] 55 |     let Nf = N as f64;
[INFO] [stderr]    |         ^^ help: convert the identifier to snake case: `nf`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `X` should have a snake case name
[INFO] [stderr]   --> src/fft.rs:56:13
[INFO] [stderr]    |
[INFO] [stderr] 56 |     let mut X: Vec<Complex<f64>> = vec![Complex::new(0.0, 0.0); N];
[INFO] [stderr]    |             ^ help: convert the identifier to snake case: `x`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `X_even` should have a snake case name
[INFO] [stderr]   --> src/fft.rs:73:13
[INFO] [stderr]    |
[INFO] [stderr] 73 |         let X_even = ditfft2(&evens[..]);
[INFO] [stderr]    |             ^^^^^^ help: convert the identifier to snake case: `x_even`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `X_odd` should have a snake case name
[INFO] [stderr]   --> src/fft.rs:74:13
[INFO] [stderr]    |
[INFO] [stderr] 74 |         let X_odd = ditfft2(&odds[..]);
[INFO] [stderr]    |             ^^^^^ help: convert the identifier to snake case: `x_odd`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/vis.rs:62:9
[INFO] [stderr]    |
[INFO] [stderr] 62 |         self.canvas.set_scale(self.scale_x, self.scale_y);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/vis.rs:65:9
[INFO] [stderr]    |
[INFO] [stderr] 65 | /         self.canvas.fill_rect(Rect::new(0, 0, self.win_width,
[INFO] [stderr] 66 | |                                                      self.win_height));
[INFO] [stderr]    | |_______________________________________________________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/vis.rs:88:13
[INFO] [stderr]    |
[INFO] [stderr] 88 |             self.canvas.fill_rect(rect);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.58s
[INFO] running `"docker" "inspect" "6d556fd7f58f8d1245866167a8191f760b26be03d4d130b9483e70d99ff35132"`
[INFO] running `"docker" "rm" "-f" "6d556fd7f58f8d1245866167a8191f760b26be03d4d130b9483e70d99ff35132"`
[INFO] [stdout] 6d556fd7f58f8d1245866167a8191f760b26be03d4d130b9483e70d99ff35132
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen"`
[INFO] [stdout] b5b360ddbaeb447f6c4939fbee75df44cb8b5342b593628373ab71173ec4f6a9
[INFO] running `"docker" "start" "-a" "b5b360ddbaeb447f6c4939fbee75df44cb8b5342b593628373ab71173ec4f6a9"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/spectralizer_rs-ebee0d0e293c1fe4
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test fft::test::test_ditfft2 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "b5b360ddbaeb447f6c4939fbee75df44cb8b5342b593628373ab71173ec4f6a9"`
[INFO] running `"docker" "rm" "-f" "b5b360ddbaeb447f6c4939fbee75df44cb8b5342b593628373ab71173ec4f6a9"`
[INFO] [stdout] b5b360ddbaeb447f6c4939fbee75df44cb8b5342b593628373ab71173ec4f6a9