[INFO] updating cached repository schnommus/rust-fir
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/schnommus/rust-fir
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/schnommus/rust-fir" "work/ex/clippy-test-run/sources/stable/gh/schnommus/rust-fir"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/schnommus/rust-fir'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/schnommus/rust-fir" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/schnommus/rust-fir"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/schnommus/rust-fir'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 82c71f2ec7814d186b5166e41999e0d2f228f2c5
[INFO] sha for GitHub repo schnommus/rust-fir: 82c71f2ec7814d186b5166e41999e0d2f228f2c5
[INFO] validating manifest of schnommus/rust-fir on toolchain stable
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of schnommus/rust-fir on toolchain stable+rustflags=-Dclippy::into_iter_on_array
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing schnommus/rust-fir
[INFO] finished frobbing schnommus/rust-fir
[INFO] frobbed toml for schnommus/rust-fir written to work/ex/clippy-test-run/sources/stable/gh/schnommus/rust-fir/Cargo.toml
[INFO] started frobbing schnommus/rust-fir
[INFO] finished frobbing schnommus/rust-fir
[INFO] frobbed toml for schnommus/rust-fir written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/schnommus/rust-fir/Cargo.toml
[INFO] crate schnommus/rust-fir has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] linting schnommus/rust-fir against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-3/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/schnommus/rust-fir:/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" "+stable" "clippy" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 2ac03dbb396e22c68f8d8aa733971c810a9695672952600a50faac1a03950196
[INFO] running `"docker" "start" "-a" "2ac03dbb396e22c68f8d8aa733971c810a9695672952600a50faac1a03950196"`
[INFO] [stderr]     Checking byteorder v0.5.3
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]     Checking flate2 v0.2.20
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]     Checking png v0.5.2
[INFO] [stderr]     Checking rayon-core v1.4.0
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking rayon v1.0.1
[INFO] [stderr]     Checking jpeg-decoder v0.1.14
[INFO] [stderr]     Checking image v0.10.4
[INFO] [stderr]     Checking raster v0.2.0
[INFO] [stderr]     Checking fir v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `intensity_filtered`
[INFO] [stderr]    --> src/main.rs:197:13
[INFO] [stderr]     |
[INFO] [stderr] 197 |         let intensity_filtered =
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^ help: consider using `_intensity_filtered` instead
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `intensity_filtered`
[INFO] [stderr]    --> src/main.rs:197:13
[INFO] [stderr]     |
[INFO] [stderr] 197 |         let intensity_filtered =
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^ help: consider using `_intensity_filtered` instead
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Rectangular`
[INFO] [stderr]   --> src/main.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     Rectangular,
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `BlackmanHarris`
[INFO] [stderr]   --> src/main.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     BlackmanHarris
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `HighPass`
[INFO] [stderr]   --> src/main.rs:45:5
[INFO] [stderr]    |
[INFO] [stderr] 45 |     HighPass(f64),
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `BandPass`
[INFO] [stderr]   --> src/main.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 |     BandPass(f64, f64),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `BandStop`
[INFO] [stderr]   --> src/main.rs:47:5
[INFO] [stderr]    |
[INFO] [stderr] 47 |     BandStop(f64, f64)
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `dft`
[INFO] [stderr]   --> src/main.rs:78:1
[INFO] [stderr]    |
[INFO] [stderr] 78 | fn dft(x: &[f64], n_samples: usize) -> Vec<f64> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `white_noise`
[INFO] [stderr]    --> src/main.rs:120:1
[INFO] [stderr]     |
[INFO] [stderr] 120 | fn white_noise(n_samples: usize, amplitude: f64) -> Vec<f64> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/main.rs:23:43
[INFO] [stderr]    |
[INFO] [stderr] 23 |     let samples = (1..window_len).map(|e| e as f64);
[INFO] [stderr]    |                                           ^^^^^^^^ help: try: `f64::from(e)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/main.rs:24:13
[INFO] [stderr]    |
[INFO] [stderr] 24 |     let m = window_len as f64;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^ help: try: `f64::from(window_len)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/main.rs:53:43
[INFO] [stderr]    |
[INFO] [stderr] 53 |     let samples = (1..filter_len).map(|e| e as f64);
[INFO] [stderr]    |                                           ^^^^^^^^ help: try: `f64::from(e)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/main.rs:54:13
[INFO] [stderr]    |
[INFO] [stderr] 54 |     let m = filter_len as f64;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^ help: try: `f64::from(filter_len)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `n` is used to index `x`
[INFO] [stderr]   --> src/main.rs:86:18
[INFO] [stderr]    |
[INFO] [stderr] 86 |         for n in 0..(m-1) {
[INFO] [stderr]    |                  ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_range_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]    |
[INFO] [stderr] 86 |         for (n, <item>) in x.iter().enumerate().take((m-1)) {
[INFO] [stderr]    |             ^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Rectangular`
[INFO] [stderr]   --> src/main.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     Rectangular,
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `BlackmanHarris`
[INFO] [stderr] warning: constant `Fs` should have an upper case name such as `FS`
[INFO] [stderr]    --> src/main.rs:131:1
[INFO] [stderr]     |
[INFO] [stderr] 131 | const Fs: f64 = 20e6;
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(non_upper_case_globals)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant `nyquist` should have an upper case name such as `NYQUIST`
[INFO] [stderr]    --> src/main.rs:132:1
[INFO] [stderr]     |
[INFO] [stderr] 132 | const nyquist: f64 = Fs/2.0;
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant `n_lines` should have an upper case name such as `N_LINES`
[INFO] [stderr]    --> src/main.rs:133:1
[INFO] [stderr]     |
[INFO] [stderr] 133 | const n_lines: i32 = 625;
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant `n_columns` should have an upper case name such as `N_COLUMNS`
[INFO] [stderr]    --> src/main.rs:134:1
[INFO] [stderr]     |
[INFO] [stderr] 134 | const n_columns: i32 = 700;
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant `line_freq_hz` should have an upper case name such as `LINE_FREQ_HZ`
[INFO] [stderr]    --> src/main.rs:135:1
[INFO] [stderr]     |
[INFO] [stderr] 135 | const line_freq_hz: f64 = 15.625e3;
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant `frame_freq_hz` should have an upper case name such as `FRAME_FREQ_HZ`
[INFO] [stderr]    --> src/main.rs:136:1
[INFO] [stderr]     |
[INFO] [stderr] 136 | const frame_freq_hz: f64 = 50.0;
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]   --> src/main.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     BlackmanHarris
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `HighPass`
[INFO] [stderr]   --> src/main.rs:45:5
[INFO] [stderr]    |
[INFO] [stderr] 45 |     HighPass(f64),
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `BandPass`
[INFO] [stderr]   --> src/main.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 |     BandPass(f64, f64),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `BandStop`
[INFO] [stderr]   --> src/main.rs:47:5
[INFO] [stderr]    |
[INFO] [stderr] 47 |     BandStop(f64, f64)
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `dft`
[INFO] [stderr]   --> src/main.rs:78:1
[INFO] [stderr]    |
[INFO] [stderr] 78 | fn dft(x: &[f64], n_samples: usize) -> Vec<f64> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `white_noise`
[INFO] [stderr]    --> src/main.rs:120:1
[INFO] [stderr]     |
[INFO] [stderr] 120 | fn white_noise(n_samples: usize, amplitude: f64) -> Vec<f64> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/main.rs:23:43
[INFO] [stderr]    |
[INFO] [stderr] 23 |     let samples = (1..window_len).map(|e| e as f64);
[INFO] [stderr]    |                                           ^^^^^^^^ help: try: `f64::from(e)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/main.rs:24:13
[INFO] [stderr]    |
[INFO] [stderr] 24 |     let m = window_len as f64;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^ help: try: `f64::from(window_len)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is only used to index `whole_block`.
[INFO] [stderr]    --> src/main.rs:200:18
[INFO] [stderr]     |
[INFO] [stderr] 200 |         for i in block_size..(block_size*2) {
[INFO] [stderr]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]     |
[INFO] [stderr] 200 |         for <item> in whole_block.iter().take((block_size*2)).skip(block_size) {
[INFO] [stderr]     |             ^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:202:36
[INFO] [stderr]     |
[INFO] [stderr] 202 |             self.hsync_sawtooth += (n_columns as f64) * line_freq_hz/Fs;
[INFO] [stderr]     |                                    ^^^^^^^^^^^^^^^^^^ help: try: `f64::from(n_columns)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:203:36
[INFO] [stderr]     |
[INFO] [stderr] 203 |             self.vsync_sawtooth += (n_lines as f64) * frame_freq_hz/Fs;
[INFO] [stderr]     |                                    ^^^^^^^^^^^^^^^^ help: try: `f64::from(n_lines)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:207:38
[INFO] [stderr]     |
[INFO] [stderr] 207 |             if self.hsync_sawtooth < n_columns as f64 &&
[INFO] [stderr]     |                                      ^^^^^^^^^^^^^^^^ help: try: `f64::from(n_columns)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:208:38
[INFO] [stderr]     |
[INFO] [stderr] 208 |                self.vsync_sawtooth < n_lines as f64 {
[INFO] [stderr]     |                                      ^^^^^^^^^^^^^^ help: try: `f64::from(n_lines)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/main.rs:53:43
[INFO] [stderr]    |
[INFO] [stderr] 53 |     let samples = (1..filter_len).map(|e| e as f64);
[INFO] [stderr]    |                                           ^^^^^^^^ help: try: `f64::from(e)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/main.rs:54:13
[INFO] [stderr]    |
[INFO] [stderr] 54 |     let m = filter_len as f64;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^ help: try: `f64::from(filter_len)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/main.rs:223:9
[INFO] [stderr]     |
[INFO] [stderr] 223 |         raster::save(&self.canvas, "test_render.png");
[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: casting f32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:242:21
[INFO] [stderr]     |
[INFO] [stderr] 242 |         buffer.push(value as f64);
[INFO] [stderr]     |                     ^^^^^^^^^^^^ help: try: `f64::from(value)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `n` is used to index `x`
[INFO] [stderr]   --> src/main.rs:86:18
[INFO] [stderr]    |
[INFO] [stderr] 86 |         for n in 0..(m-1) {
[INFO] [stderr]    |                  ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_range_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]    |
[INFO] [stderr] 86 |         for (n, <item>) in x.iter().enumerate().take((m-1)) {
[INFO] [stderr]    |             ^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant `Fs` should have an upper case name such as `FS`
[INFO] [stderr]    --> src/main.rs:131:1
[INFO] [stderr]     |
[INFO] [stderr] 131 | const Fs: f64 = 20e6;
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(non_upper_case_globals)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant `nyquist` should have an upper case name such as `NYQUIST`
[INFO] [stderr]    --> src/main.rs:132:1
[INFO] [stderr]     |
[INFO] [stderr] 132 | const nyquist: f64 = Fs/2.0;
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant `n_lines` should have an upper case name such as `N_LINES`
[INFO] [stderr]    --> src/main.rs:133:1
[INFO] [stderr]     |
[INFO] [stderr] 133 | const n_lines: i32 = 625;
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant `n_columns` should have an upper case name such as `N_COLUMNS`
[INFO] [stderr]    --> src/main.rs:134:1
[INFO] [stderr]     |
[INFO] [stderr] 134 | const n_columns: i32 = 700;
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant `line_freq_hz` should have an upper case name such as `LINE_FREQ_HZ`
[INFO] [stderr]    --> src/main.rs:135:1
[INFO] [stderr]     |
[INFO] [stderr] 135 | const line_freq_hz: f64 = 15.625e3;
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant `frame_freq_hz` should have an upper case name such as `FRAME_FREQ_HZ`
[INFO] [stderr]    --> src/main.rs:136:1
[INFO] [stderr]     |
[INFO] [stderr] 136 | const frame_freq_hz: f64 = 50.0;
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is only used to index `whole_block`.
[INFO] [stderr]    --> src/main.rs:200:18
[INFO] [stderr]     |
[INFO] [stderr] 200 |         for i in block_size..(block_size*2) {
[INFO] [stderr]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]     |
[INFO] [stderr] 200 |         for <item> in whole_block.iter().take((block_size*2)).skip(block_size) {
[INFO] [stderr]     |             ^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:202:36
[INFO] [stderr]     |
[INFO] [stderr] 202 |             self.hsync_sawtooth += (n_columns as f64) * line_freq_hz/Fs;
[INFO] [stderr]     |                                    ^^^^^^^^^^^^^^^^^^ help: try: `f64::from(n_columns)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:203:36
[INFO] [stderr]     |
[INFO] [stderr] 203 |             self.vsync_sawtooth += (n_lines as f64) * frame_freq_hz/Fs;
[INFO] [stderr]     |                                    ^^^^^^^^^^^^^^^^ help: try: `f64::from(n_lines)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:207:38
[INFO] [stderr]     |
[INFO] [stderr] 207 |             if self.hsync_sawtooth < n_columns as f64 &&
[INFO] [stderr]     |                                      ^^^^^^^^^^^^^^^^ help: try: `f64::from(n_columns)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:208:38
[INFO] [stderr]     |
[INFO] [stderr] 208 |                self.vsync_sawtooth < n_lines as f64 {
[INFO] [stderr]     |                                      ^^^^^^^^^^^^^^ help: try: `f64::from(n_lines)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/main.rs:223:9
[INFO] [stderr]     |
[INFO] [stderr] 223 |         raster::save(&self.canvas, "test_render.png");
[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: casting f32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:242:21
[INFO] [stderr]     |
[INFO] [stderr] 242 |         buffer.push(value as f64);
[INFO] [stderr]     |                     ^^^^^^^^^^^^ help: try: `f64::from(value)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.93s
[INFO] running `"docker" "inspect" "2ac03dbb396e22c68f8d8aa733971c810a9695672952600a50faac1a03950196"`
[INFO] running `"docker" "rm" "-f" "2ac03dbb396e22c68f8d8aa733971c810a9695672952600a50faac1a03950196"`
[INFO] [stdout] 2ac03dbb396e22c68f8d8aa733971c810a9695672952600a50faac1a03950196