[INFO] crate processig 0.0.2 is already in cache
[INFO] extracting crate processig 0.0.2 into work/ex/clippy-test-run/sources/stable/reg/processig/0.0.2
[INFO] extracting crate processig 0.0.2 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/processig/0.0.2
[INFO] validating manifest of processig-0.0.2 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 processig-0.0.2 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 processig-0.0.2
[INFO] finished frobbing processig-0.0.2
[INFO] frobbed toml for processig-0.0.2 written to work/ex/clippy-test-run/sources/stable/reg/processig/0.0.2/Cargo.toml
[INFO] started frobbing processig-0.0.2
[INFO] finished frobbing processig-0.0.2
[INFO] frobbed toml for processig-0.0.2 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/processig/0.0.2/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 processig-0.0.2 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-7/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/processig/0.0.2:/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] 7a98131e6ea42d8cb59c204ac5def978a779cca713e9becb265ee711674392da
[INFO] running `"docker" "start" "-a" "7a98131e6ea42d8cb59c204ac5def978a779cca713e9becb265ee711674392da"`
[INFO] [stderr]     Checking mazth v0.2.1
[INFO] [stderr]     Checking zpatial v0.0.0
[INFO] [stderr]     Checking ndarray v0.12.1
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]     Checking pretty_env_logger v0.2.5
[INFO] [stderr]     Checking image v0.20.1
[INFO] [stderr]     Checking processig v0.0.2 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/kalman_fuse.rs:159:19
[INFO] [stderr]     |
[INFO] [stderr] 159 |     Ok( Weights { weights: weights } )
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^^ help: replace it with: `weights`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: 5th binding whose name is just one char
[INFO] [stderr]    --> src/fft.rs:143:21
[INFO] [stderr]     |
[INFO] [stderr] 143 |             let mut w = complex::Complex::new( 1f32, 0f32 ); //twiddle factor
[INFO] [stderr]     |                     ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::many_single_char_names)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/kalman_fuse.rs:159:19
[INFO] [stderr]     |
[INFO] [stderr] 159 |     Ok( Weights { weights: weights } )
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^^ help: replace it with: `weights`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: 5th binding whose name is just one char
[INFO] [stderr]    --> src/fft.rs:143:21
[INFO] [stderr]     |
[INFO] [stderr] 143 |             let mut w = complex::Complex::new( 1f32, 0f32 ); //twiddle factor
[INFO] [stderr]     |                     ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::many_single_char_names)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ndarray::prelude::*`
[INFO] [stderr]  --> src/kalman_fuse.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use ndarray::prelude::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `utility`
[INFO] [stderr]  --> src/kalman_fuse.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use utility;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Index`
[INFO] [stderr]   --> src/kalman_fuse.rs:10:16
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::ops::{Index, IndexMut};
[INFO] [stderr]    |                ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]   --> src/fft.rs:56:5
[INFO] [stderr]    |
[INFO] [stderr] 56 |     ret
[INFO] [stderr]    |     ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::let_and_return)] on by default
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]   --> src/fft.rs:55:15
[INFO] [stderr]    |
[INFO] [stderr] 55 |     let ret = v.iter().map(|x| x.re / n as f32 ).collect::<Vec<f32>>();
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]   --> src/fft.rs:65:5
[INFO] [stderr]    |
[INFO] [stderr] 65 |     ret
[INFO] [stderr]    |     ^^^
[INFO] [stderr]    |
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]   --> src/fft.rs:64:15
[INFO] [stderr]    |
[INFO] [stderr] 64 |     let ret = v.iter().map(|x| x.re / n as f32 ).collect::<Vec<f32>>();
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `self::ndarray::prelude::*`
[INFO] [stderr]  --> src/pursuit.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use self::ndarray::prelude::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/mod.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `IndexMut`
[INFO] [stderr]   --> src/kalman_fuse.rs:10:23
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::ops::{Index, IndexMut};
[INFO] [stderr]    |                       ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/pursuit.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 34 |         _ => { unimplemented!(); },
[INFO] [stderr]    |         ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unreachable_patterns)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/pursuit.rs:69:9
[INFO] [stderr]    |
[INFO] [stderr] 69 |         _ => {
[INFO] [stderr]    |         ^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/pursuit.rs:127:13
[INFO] [stderr]     |
[INFO] [stderr] 127 |             _ => { panic!("unexpected signal type"); }
[INFO] [stderr]     |             ^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]   --> src/pursuit.rs:42:21
[INFO] [stderr]    |
[INFO] [stderr] 42 | fn interp_discrete( a: & Signal, len: usize ) -> Signal {
[INFO] [stderr]    |                     ^ help: consider using `_a` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `len`
[INFO] [stderr]   --> src/pursuit.rs:42:34
[INFO] [stderr]    |
[INFO] [stderr] 42 | fn interp_discrete( a: & Signal, len: usize ) -> Signal {
[INFO] [stderr]    |                                  ^^^ help: consider using `_len` instead
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/pursuit.rs:51:9
[INFO] [stderr]    |
[INFO] [stderr] 51 |     let mut temp_a : Signal;
[INFO] [stderr]    |         ----^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/pursuit.rs:52:9
[INFO] [stderr]    |
[INFO] [stderr] 52 |     let mut temp_b : Signal;
[INFO] [stderr]    |         ----^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/kalman_fuse.rs:26:41
[INFO] [stderr]    |
[INFO] [stderr] 26 | pub fn vector_calc_stats( input_sample: &Vec< Vec< Vec< f64 > > > ) -> Result< Stats, Error > {
[INFO] [stderr]    |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: change this to: `&[Vec< Vec< f64 > >]`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: called `.iter().nth()` on a slice. Calling `.get()` is both faster and more readable
[INFO] [stderr]   --> src/kalman_fuse.rs:33:31
[INFO] [stderr]    |
[INFO] [stderr] 33 |     let sample_length = match input_sample.iter().nth(0) {
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::iter_nth)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#iter_nth
[INFO] [stderr] 
[INFO] [stderr] warning: called `.iter().nth()` on a slice. Calling `.get()` is both faster and more readable
[INFO] [stderr]   --> src/kalman_fuse.rs:38:36
[INFO] [stderr]    |
[INFO] [stderr] 38 |     let data_vector_length = match input_sample.iter().nth(0).unwrap().iter().nth(0) {
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#iter_nth
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/kalman_fuse.rs:73:17
[INFO] [stderr]    |
[INFO] [stderr] 73 |                 *i = *i / sample_length as f64;
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `*i /= sample_length as f64`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::assign_op_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is used to index `input_sample`
[INFO] [stderr]   --> src/kalman_fuse.rs:87:14
[INFO] [stderr]    |
[INFO] [stderr] 87 |     for i in 0..num_sources {
[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] 87 |     for (i, <item>) in input_sample.iter().enumerate().take(num_sources) {
[INFO] [stderr]    |         ^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/kalman_fuse.rs:99:21
[INFO] [stderr]    |
[INFO] [stderr] 99 |                     a = a + temp;
[INFO] [stderr]    |                     ^^^^^^^^^^^^ help: replace it with: `a += temp`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/kalman_fuse.rs:162:51
[INFO] [stderr]     |
[INFO] [stderr] 162 | pub fn vector_fuse_data( w: &Weights, input_data: &Vec< Vec< f64 > > ) -> Result< Vec<f64>, Error > {
[INFO] [stderr]     |                                                   ^^^^^^^^^^^^^^^^^^ help: change this to: `&[Vec< f64 >]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is used to index `x`
[INFO] [stderr]    --> src/kalman_fuse.rs:181:18
[INFO] [stderr]     |
[INFO] [stderr] 181 |         for i in 0.. min(4, data_vector_length) {
[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] 181 |         for (i, <item>) in x.iter().enumerate().take(min(4, data_vector_length)) {
[INFO] [stderr]     |             ^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: it looks like you're manually copying between slices
[INFO] [stderr]    --> src/kalman_fuse.rs:181:18
[INFO] [stderr]     |
[INFO] [stderr] 181 |         for i in 0.. min(4, data_vector_length) {
[INFO] [stderr]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try replacing the loop by: `m._val[..min(4, data_vector_length)].clone_from_slice(&x[..min(4, data_vector_length)])`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::manual_memcpy)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_memcpy
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is used to index `ret`
[INFO] [stderr]    --> src/kalman_fuse.rs:196:14
[INFO] [stderr]     |
[INFO] [stderr] 196 |     for i in 0..4 {
[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] 196 |     for (i, <item>) in ret.iter_mut().enumerate().take(4) {
[INFO] [stderr]     |         ^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: it looks like you're manually copying between slices
[INFO] [stderr]    --> src/kalman_fuse.rs:196:14
[INFO] [stderr]     |
[INFO] [stderr] 196 |     for i in 0..4 {
[INFO] [stderr]     |              ^^^^ help: try replacing the loop by: `ret[..4].clone_from_slice(&fused._val[..4])`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_memcpy
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]  --> src/utility.rs:2:8
[INFO] [stderr]   |
[INFO] [stderr] 2 |     if arr.len() == 0 {
[INFO] [stderr]   |        ^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `arr.is_empty()`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::len_zero)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: item `distribution::CachedDistrStat` has a public `len` method but no corresponding `is_empty` method
[INFO] [stderr]   --> src/distribution.rs:16:1
[INFO] [stderr]    |
[INFO] [stderr] 16 | / impl CachedDistrStat {
[INFO] [stderr] 17 | |     pub fn len( & self ) -> usize {
[INFO] [stderr] 18 | |         self.prec.len()
[INFO] [stderr] 19 | |     }
[INFO] [stderr] ...  |
[INFO] [stderr] 22 | |     }
[INFO] [stderr] 23 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::len_without_is_empty)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_without_is_empty
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/fft.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |         i = i << 1;
[INFO] [stderr]    |         ^^^^^^^^^^ help: replace it with: `i <<= 1`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/fft.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 28 |         i = i << 1;
[INFO] [stderr]    |         ^^^^^^^^^^ help: replace it with: `i <<= 1`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/fft.rs:99:13
[INFO] [stderr]    |
[INFO] [stderr] 99 |             w = w * w_base;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^ help: replace it with: `w *= w_base`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/fft.rs:110:9
[INFO] [stderr]     |
[INFO] [stderr] 110 |         input = input >> 1;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^ help: replace it with: `input >>= 1`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/fft.rs:123:9
[INFO] [stderr]     |
[INFO] [stderr] 123 |         n_copy = n_copy << 1;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^ help: replace it with: `n_copy <<= 1`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is used to index `arr`
[INFO] [stderr]    --> src/fft.rs:128:14
[INFO] [stderr]     |
[INFO] [stderr] 128 |     for i in 0..n {
[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] 128 |     for (i, <item>) in arr.iter().enumerate().take(n) {
[INFO] [stderr]     |         ^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/fft.rs:149:17
[INFO] [stderr]     |
[INFO] [stderr] 149 |                 w = w * w_base;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^ help: replace it with: `w *= w_base`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/pursuit.rs:78:32
[INFO] [stderr]    |
[INFO] [stderr] 78 | pub fn matching_pursuit( dict: & Vec< Signal >, s: &Signal, criteria: & Criteria ) -> Result< ( Sparse, f64 ), Error > {
[INFO] [stderr]    |                                ^^^^^^^^^^^^^^^ help: change this to: `&[Signal]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/pursuit.rs:133:9
[INFO] [stderr]     |
[INFO] [stderr] 133 | /         match v {
[INFO] [stderr] 134 | |             Some(x) => {
[INFO] [stderr] 135 | |                 sparse.0.push( ( e, x ) ); //found a support with a weighting
[INFO] [stderr] 136 | |             },
[INFO] [stderr] 137 | |             _ => {},
[INFO] [stderr] 138 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 133 |         if let Some(x) = v {
[INFO] [stderr] 134 |     sparse.0.push( ( e, x ) ); //found a support with a weighting
[INFO] [stderr] 135 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/kalman.rs:58:43
[INFO] [stderr]    |
[INFO] [stderr] 58 |     let expected_precisions = &[ 0.12006, 0.012757, 1.190476 ];
[INFO] [stderr]    |                                           ^^^^^^^^ help: consider: `0.012_757`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::unreadable_literal)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/kalman.rs:58:53
[INFO] [stderr]    |
[INFO] [stderr] 58 |     let expected_precisions = &[ 0.12006, 0.012757, 1.190476 ];
[INFO] [stderr]    |                                                     ^^^^^^^^ help: consider: `1.190_476`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/kalman.rs:72:41
[INFO] [stderr]    |
[INFO] [stderr] 72 |     let expected_precision_weights = &[ 0.0907282, 0.0096402, 0.8996315 ];
[INFO] [stderr]    |                                         ^^^^^^^^^ help: consider: `0.090_728_2`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/kalman.rs:72:52
[INFO] [stderr]    |
[INFO] [stderr] 72 |     let expected_precision_weights = &[ 0.0907282, 0.0096402, 0.8996315 ];
[INFO] [stderr]    |                                                    ^^^^^^^^^ help: consider: `0.009_640_2`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/kalman.rs:72:63
[INFO] [stderr]    |
[INFO] [stderr] 72 |     let expected_precision_weights = &[ 0.0907282, 0.0096402, 0.8996315 ];
[INFO] [stderr]    |                                                               ^^^^^^^^^ help: consider: `0.899_631_5`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ndarray::prelude::*`
[INFO] [stderr]  --> src/kalman_fuse.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use ndarray::prelude::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `utility`
[INFO] [stderr]  --> src/kalman_fuse.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use utility;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Index`
[INFO] [stderr]   --> src/kalman_fuse.rs:10:16
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::ops::{Index, IndexMut};
[INFO] [stderr]    |                ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: doc comment not used by rustdoc
[INFO] [stderr]    --> src/kalman_fuse.rs:206:5
[INFO] [stderr]     |
[INFO] [stderr] 206 |     /// test with 3 data sources each with vector length of 4
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_doc_comments)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/utility.rs:39:25
[INFO] [stderr]    |
[INFO] [stderr] 39 |     assert!( n < 14.6 + 0.00000001 );
[INFO] [stderr]    |                         ^^^^^^^^^^ help: consider: `0.000_000_01`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/utility.rs:40:25
[INFO] [stderr]    |
[INFO] [stderr] 40 |     assert!( n > 14.6 - 0.00000001 );
[INFO] [stderr]    |                         ^^^^^^^^^^ help: consider: `0.000_000_01`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]   --> src/fft.rs:56:5
[INFO] [stderr]    |
[INFO] [stderr] 56 |     ret
[INFO] [stderr]    |     ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::let_and_return)] on by default
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]   --> src/fft.rs:55:15
[INFO] [stderr]    |
[INFO] [stderr] 55 |     let ret = v.iter().map(|x| x.re / n as f32 ).collect::<Vec<f32>>();
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]   --> src/fft.rs:65:5
[INFO] [stderr]    |
[INFO] [stderr] 65 |     ret
[INFO] [stderr]    |     ^^^
[INFO] [stderr]    |
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]   --> src/fft.rs:64:15
[INFO] [stderr]    |
[INFO] [stderr] 64 |     let ret = v.iter().map(|x| x.re / n as f32 ).collect::<Vec<f32>>();
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]    --> src/fft.rs:206:29
[INFO] [stderr]     |
[INFO] [stderr] 206 |     let ret = reverse_bits( 0b1110101, 7 );
[INFO] [stderr]     |                             ^^^^^^^^^ help: consider: `0b111_0101`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]    --> src/fft.rs:207:22
[INFO] [stderr]     |
[INFO] [stderr] 207 |     assert_eq!( ret, 0b1010111 );
[INFO] [stderr]     |                      ^^^^^^^^^ help: consider: `0b101_0111`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `self::ndarray::prelude::*`
[INFO] [stderr]  --> src/pursuit.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use self::ndarray::prelude::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `IndexMut`
[INFO] [stderr]   --> src/kalman_fuse.rs:10:23
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::ops::{Index, IndexMut};
[INFO] [stderr]    |                       ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/pursuit.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 34 |         _ => { unimplemented!(); },
[INFO] [stderr]    |         ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unreachable_patterns)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/pursuit.rs:69:9
[INFO] [stderr]    |
[INFO] [stderr] 69 |         _ => {
[INFO] [stderr]    |         ^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/pursuit.rs:127:13
[INFO] [stderr]     |
[INFO] [stderr] 127 |             _ => { panic!("unexpected signal type"); }
[INFO] [stderr]     |             ^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/pursuit.rs:185:21
[INFO] [stderr]     |
[INFO] [stderr] 185 |                     _ => {},
[INFO] [stderr]     |                     ^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]   --> src/pursuit.rs:42:21
[INFO] [stderr]    |
[INFO] [stderr] 42 | fn interp_discrete( a: & Signal, len: usize ) -> Signal {
[INFO] [stderr]    |                     ^ help: consider using `_a` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `len`
[INFO] [stderr]   --> src/pursuit.rs:42:34
[INFO] [stderr]    |
[INFO] [stderr] 42 | fn interp_discrete( a: & Signal, len: usize ) -> Signal {
[INFO] [stderr]    |                                  ^^^ help: consider using `_len` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `mu0`
[INFO] [stderr]    --> src/kalman_fuse.rs:209:9
[INFO] [stderr]     |
[INFO] [stderr] 209 |     let mu0 = 2.0;
[INFO] [stderr]     |         ^^^ help: consider using `_mu0` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sigma0`
[INFO] [stderr]    --> src/kalman_fuse.rs:210:9
[INFO] [stderr]     |
[INFO] [stderr] 210 |     let sigma0 = 1.0;
[INFO] [stderr]     |         ^^^^^^ help: consider using `_sigma0` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `mu1`
[INFO] [stderr]    --> src/kalman_fuse.rs:224:9
[INFO] [stderr]     |
[INFO] [stderr] 224 |     let mu1 = 10.0;
[INFO] [stderr]     |         ^^^ help: consider using `_mu1` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sigma1`
[INFO] [stderr]    --> src/kalman_fuse.rs:225:9
[INFO] [stderr]     |
[INFO] [stderr] 225 |     let sigma1 = 5.0;
[INFO] [stderr]     |         ^^^^^^ help: consider using `_sigma1` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `mu2`
[INFO] [stderr]    --> src/kalman_fuse.rs:239:9
[INFO] [stderr]     |
[INFO] [stderr] 239 |     let mu2 = -3.0;
[INFO] [stderr]     |         ^^^ help: consider using `_mu2` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sigma2`
[INFO] [stderr]    --> src/kalman_fuse.rs:240:9
[INFO] [stderr]     |
[INFO] [stderr] 240 |     let sigma2 = 2.0;
[INFO] [stderr]     |         ^^^^^^ help: consider using `_sigma2` instead
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/pursuit.rs:51:9
[INFO] [stderr]    |
[INFO] [stderr] 51 |     let mut temp_a : Signal;
[INFO] [stderr]    |         ----^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/pursuit.rs:52:9
[INFO] [stderr]    |
[INFO] [stderr] 52 |     let mut temp_b : Signal;
[INFO] [stderr]    |         ----^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/kalman_fuse.rs:26:41
[INFO] [stderr]    |
[INFO] [stderr] 26 | pub fn vector_calc_stats( input_sample: &Vec< Vec< Vec< f64 > > > ) -> Result< Stats, Error > {
[INFO] [stderr]    |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: change this to: `&[Vec< Vec< f64 > >]`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: called `.iter().nth()` on a slice. Calling `.get()` is both faster and more readable
[INFO] [stderr]   --> src/kalman_fuse.rs:33:31
[INFO] [stderr]    |
[INFO] [stderr] 33 |     let sample_length = match input_sample.iter().nth(0) {
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::iter_nth)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#iter_nth
[INFO] [stderr] 
[INFO] [stderr] warning: called `.iter().nth()` on a slice. Calling `.get()` is both faster and more readable
[INFO] [stderr]   --> src/kalman_fuse.rs:38:36
[INFO] [stderr]    |
[INFO] [stderr] 38 |     let data_vector_length = match input_sample.iter().nth(0).unwrap().iter().nth(0) {
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#iter_nth
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/kalman_fuse.rs:73:17
[INFO] [stderr]    |
[INFO] [stderr] 73 |                 *i = *i / sample_length as f64;
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `*i /= sample_length as f64`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::assign_op_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is used to index `input_sample`
[INFO] [stderr]   --> src/kalman_fuse.rs:87:14
[INFO] [stderr]    |
[INFO] [stderr] 87 |     for i in 0..num_sources {
[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] 87 |     for (i, <item>) in input_sample.iter().enumerate().take(num_sources) {
[INFO] [stderr]    |         ^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/kalman_fuse.rs:99:21
[INFO] [stderr]    |
[INFO] [stderr] 99 |                     a = a + temp;
[INFO] [stderr]    |                     ^^^^^^^^^^^^ help: replace it with: `a += temp`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/kalman_fuse.rs:162:51
[INFO] [stderr]     |
[INFO] [stderr] 162 | pub fn vector_fuse_data( w: &Weights, input_data: &Vec< Vec< f64 > > ) -> Result< Vec<f64>, Error > {
[INFO] [stderr]     |                                                   ^^^^^^^^^^^^^^^^^^ help: change this to: `&[Vec< f64 >]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is used to index `x`
[INFO] [stderr]    --> src/kalman_fuse.rs:181:18
[INFO] [stderr]     |
[INFO] [stderr] 181 |         for i in 0.. min(4, data_vector_length) {
[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] 181 |         for (i, <item>) in x.iter().enumerate().take(min(4, data_vector_length)) {
[INFO] [stderr]     |             ^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: it looks like you're manually copying between slices
[INFO] [stderr]    --> src/kalman_fuse.rs:181:18
[INFO] [stderr]     |
[INFO] [stderr] 181 |         for i in 0.. min(4, data_vector_length) {
[INFO] [stderr]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try replacing the loop by: `m._val[..min(4, data_vector_length)].clone_from_slice(&x[..min(4, data_vector_length)])`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::manual_memcpy)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_memcpy
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is used to index `ret`
[INFO] [stderr]    --> src/kalman_fuse.rs:196:14
[INFO] [stderr]     |
[INFO] [stderr] 196 |     for i in 0..4 {
[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] 196 |     for (i, <item>) in ret.iter_mut().enumerate().take(4) {
[INFO] [stderr]     |         ^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: it looks like you're manually copying between slices
[INFO] [stderr]    --> src/kalman_fuse.rs:196:14
[INFO] [stderr]     |
[INFO] [stderr] 196 |     for i in 0..4 {
[INFO] [stderr]     |              ^^^^ help: try replacing the loop by: `ret[..4].clone_from_slice(&fused._val[..4])`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_memcpy
[INFO] [stderr] 
[INFO] [stderr] error: this .into_iter() call is equivalent to .iter() and will not move the array
[INFO] [stderr]    --> src/kalman_fuse.rs:222:7
[INFO] [stderr]     |
[INFO] [stderr] 222 |     ].into_iter().map(|x| x.to_vec() ).collect::< Vec< Vec< f64 > > >();
[INFO] [stderr]     |       ^^^^^^^^^ help: call directly: `iter`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[deny(clippy::into_iter_on_array)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#into_iter_on_array
[INFO] [stderr] 
[INFO] [stderr] error: this .into_iter() call is equivalent to .iter() and will not move the array
[INFO] [stderr]    --> src/kalman_fuse.rs:237:7
[INFO] [stderr]     |
[INFO] [stderr] 237 |     ].into_iter().map(|x| x.to_vec() ).collect::< Vec< Vec< f64 > > >();
[INFO] [stderr]     |       ^^^^^^^^^ help: call directly: `iter`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#into_iter_on_array
[INFO] [stderr] 
[INFO] [stderr] error: this .into_iter() call is equivalent to .iter() and will not move the array
[INFO] [stderr]    --> src/kalman_fuse.rs:252:7
[INFO] [stderr]     |
[INFO] [stderr] 252 |     ].into_iter().map(|x| x.to_vec() ).collect::< Vec< Vec< f64 > > >();
[INFO] [stderr]     |       ^^^^^^^^^ help: call directly: `iter`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#into_iter_on_array
[INFO] [stderr] 
[INFO] [stderr] error: this .into_iter() call is equivalent to .iter() and will not move the array
[INFO] [stderr]    --> src/kalman_fuse.rs:279:7
[INFO] [stderr]     |
[INFO] [stderr] 279 |     ].into_iter().map(|x| x.to_vec() ).collect::< Vec< Vec< f64 > > >();
[INFO] [stderr]     |       ^^^^^^^^^ help: call directly: `iter`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#into_iter_on_array
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]  --> src/utility.rs:2:8
[INFO] [stderr]   |
[INFO] [stderr] 2 |     if arr.len() == 0 {
[INFO] [stderr]   |        ^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `arr.is_empty()`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::len_zero)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: item `distribution::CachedDistrStat` has a public `len` method but no corresponding `is_empty` method
[INFO] [stderr]   --> src/distribution.rs:16:1
[INFO] [stderr]    |
[INFO] [stderr] 16 | / impl CachedDistrStat {
[INFO] [stderr] 17 | |     pub fn len( & self ) -> usize {
[INFO] [stderr] 18 | |         self.prec.len()
[INFO] [stderr] 19 | |     }
[INFO] [stderr] ...  |
[INFO] [stderr] 22 | |     }
[INFO] [stderr] 23 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::len_without_is_empty)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_without_is_empty
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/fft.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |         i = i << 1;
[INFO] [stderr]    |         ^^^^^^^^^^ help: replace it with: `i <<= 1`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/fft.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 28 |         i = i << 1;
[INFO] [stderr]    |         ^^^^^^^^^^ help: replace it with: `i <<= 1`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/fft.rs:99:13
[INFO] [stderr]    |
[INFO] [stderr] 99 |             w = w * w_base;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^ help: replace it with: `w *= w_base`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/fft.rs:110:9
[INFO] [stderr]     |
[INFO] [stderr] 110 |         input = input >> 1;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^ help: replace it with: `input >>= 1`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/fft.rs:123:9
[INFO] [stderr]     |
[INFO] [stderr] 123 |         n_copy = n_copy << 1;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^ help: replace it with: `n_copy <<= 1`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is used to index `arr`
[INFO] [stderr]    --> src/fft.rs:128:14
[INFO] [stderr]     |
[INFO] [stderr] 128 |     for i in 0..n {
[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] 128 |     for (i, <item>) in arr.iter().enumerate().take(n) {
[INFO] [stderr]     |         ^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/fft.rs:149:17
[INFO] [stderr]     |
[INFO] [stderr] 149 |                 w = w * w_base;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^ help: replace it with: `w *= w_base`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] error: approximate value of `f{32, 64}::consts::FRAC_1_SQRT_2` found. Consider using it directly
[INFO] [stderr]    --> src/fft.rs:269:48
[INFO] [stderr]     |
[INFO] [stderr] 269 |                          complex::Complex{ re: 0.7071,  im: -0.7071 },
[INFO] [stderr]     |                                                ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[deny(clippy::approx_constant)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#approx_constant
[INFO] [stderr] 
[INFO] [stderr] error: approximate value of `f{32, 64}::consts::FRAC_1_SQRT_2` found. Consider using it directly
[INFO] [stderr]    --> src/fft.rs:269:62
[INFO] [stderr]     |
[INFO] [stderr] 269 |                          complex::Complex{ re: 0.7071,  im: -0.7071 },
[INFO] [stderr]     |                                                              ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#approx_constant
[INFO] [stderr] 
[INFO] [stderr] error: approximate value of `f{32, 64}::consts::FRAC_1_SQRT_2` found. Consider using it directly
[INFO] [stderr]    --> src/fft.rs:271:49
[INFO] [stderr]     |
[INFO] [stderr] 271 |                          complex::Complex{ re: -0.7071, im: -0.7071 },
[INFO] [stderr]     |                                                 ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#approx_constant
[INFO] [stderr] 
[INFO] [stderr] error: approximate value of `f{32, 64}::consts::FRAC_1_SQRT_2` found. Consider using it directly
[INFO] [stderr]    --> src/fft.rs:271:62
[INFO] [stderr]     |
[INFO] [stderr] 271 |                          complex::Complex{ re: -0.7071, im: -0.7071 },
[INFO] [stderr]     |                                                              ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#approx_constant
[INFO] [stderr] 
[INFO] [stderr] error: approximate value of `f{32, 64}::consts::FRAC_1_SQRT_2` found. Consider using it directly
[INFO] [stderr]    --> src/fft.rs:273:49
[INFO] [stderr]     |
[INFO] [stderr] 273 |                          complex::Complex{ re: -0.7071, im: 0.7071 },
[INFO] [stderr]     |                                                 ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#approx_constant
[INFO] [stderr] 
[INFO] [stderr] error: approximate value of `f{32, 64}::consts::FRAC_1_SQRT_2` found. Consider using it directly
[INFO] [stderr]    --> src/fft.rs:273:61
[INFO] [stderr]     |
[INFO] [stderr] 273 |                          complex::Complex{ re: -0.7071, im: 0.7071 },
[INFO] [stderr]     |                                                             ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#approx_constant
[INFO] [stderr] 
[INFO] [stderr] error: approximate value of `f{32, 64}::consts::FRAC_1_SQRT_2` found. Consider using it directly
[INFO] [stderr]    --> src/fft.rs:275:48
[INFO] [stderr]     |
[INFO] [stderr] 275 |                          complex::Complex{ re: 0.7071,  im: 0.7071 } ];
[INFO] [stderr]     |                                                ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#approx_constant
[INFO] [stderr] 
[INFO] [stderr] error: approximate value of `f{32, 64}::consts::FRAC_1_SQRT_2` found. Consider using it directly
[INFO] [stderr]    --> src/fft.rs:275:61
[INFO] [stderr]     |
[INFO] [stderr] 275 |                          complex::Complex{ re: 0.7071,  im: 0.7071 } ];
[INFO] [stderr]     |                                                             ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#approx_constant
[INFO] [stderr] 
[INFO] [stderr] error: approximate value of `f{32, 64}::consts::FRAC_1_SQRT_2` found. Consider using it directly
[INFO] [stderr]    --> src/fft.rs:288:48
[INFO] [stderr]     |
[INFO] [stderr] 288 |                          complex::Complex{ re: 0.7071,  im: -0.7071 },
[INFO] [stderr]     |                                                ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#approx_constant
[INFO] [stderr] 
[INFO] [stderr] error: approximate value of `f{32, 64}::consts::FRAC_1_SQRT_2` found. Consider using it directly
[INFO] [stderr]    --> src/fft.rs:288:62
[INFO] [stderr]     |
[INFO] [stderr] 288 |                          complex::Complex{ re: 0.7071,  im: -0.7071 },
[INFO] [stderr]     |                                                              ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#approx_constant
[INFO] [stderr] 
[INFO] [stderr] error: approximate value of `f{32, 64}::consts::FRAC_1_SQRT_2` found. Consider using it directly
[INFO] [stderr]    --> src/fft.rs:290:49
[INFO] [stderr]     |
[INFO] [stderr] 290 |                          complex::Complex{ re: -0.7071, im: -0.7071 },
[INFO] [stderr]     |                                                 ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#approx_constant
[INFO] [stderr] 
[INFO] [stderr] error: approximate value of `f{32, 64}::consts::FRAC_1_SQRT_2` found. Consider using it directly
[INFO] [stderr]    --> src/fft.rs:290:62
[INFO] [stderr]     |
[INFO] [stderr] 290 |                          complex::Complex{ re: -0.7071, im: -0.7071 },
[INFO] [stderr]     |                                                              ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#approx_constant
[INFO] [stderr] 
[INFO] [stderr] error: approximate value of `f{32, 64}::consts::FRAC_1_SQRT_2` found. Consider using it directly
[INFO] [stderr]    --> src/fft.rs:292:49
[INFO] [stderr]     |
[INFO] [stderr] 292 |                          complex::Complex{ re: -0.7071, im: 0.7071 },
[INFO] [stderr]     |                                                 ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#approx_constant
[INFO] [stderr] 
[INFO] [stderr] error: approximate value of `f{32, 64}::consts::FRAC_1_SQRT_2` found. Consider using it directly
[INFO] [stderr]    --> src/fft.rs:292:61
[INFO] [stderr]     |
[INFO] [stderr] 292 |                          complex::Complex{ re: -0.7071, im: 0.7071 },
[INFO] [stderr]     |                                                             ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#approx_constant
[INFO] [stderr] 
[INFO] [stderr] error: approximate value of `f{32, 64}::consts::FRAC_1_SQRT_2` found. Consider using it directly
[INFO] [stderr]    --> src/fft.rs:294:48
[INFO] [stderr]     |
[INFO] [stderr] 294 |                          complex::Complex{ re: 0.7071,  im: 0.7071 } ];
[INFO] [stderr]     |                                                ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#approx_constant
[INFO] [stderr] 
[INFO] [stderr] error: approximate value of `f{32, 64}::consts::FRAC_1_SQRT_2` found. Consider using it directly
[INFO] [stderr]    --> src/fft.rs:294:61
[INFO] [stderr]     |
[INFO] [stderr] 294 |                          complex::Complex{ re: 0.7071,  im: 0.7071 } ];
[INFO] [stderr]     |                                                             ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#approx_constant
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/pursuit.rs:78:32
[INFO] [stderr]    |
[INFO] [stderr] 78 | pub fn matching_pursuit( dict: & Vec< Signal >, s: &Signal, criteria: & Criteria ) -> Result< ( Sparse, f64 ), Error > {
[INFO] [stderr]    |                                ^^^^^^^^^^^^^^^ help: change this to: `&[Signal]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/pursuit.rs:133:9
[INFO] [stderr]     |
[INFO] [stderr] 133 | /         match v {
[INFO] [stderr] 134 | |             Some(x) => {
[INFO] [stderr] 135 | |                 sparse.0.push( ( e, x ) ); //found a support with a weighting
[INFO] [stderr] 136 | |             },
[INFO] [stderr] 137 | |             _ => {},
[INFO] [stderr] 138 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 133 |         if let Some(x) = v {
[INFO] [stderr] 134 |     sparse.0.push( ( e, x ) ); //found a support with a weighting
[INFO] [stderr] 135 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/pursuit.rs:179:17
[INFO] [stderr]     |
[INFO] [stderr] 179 | /                 match &dict[idx] {
[INFO] [stderr] 180 | |                     Signal::Discrete(v) => {
[INFO] [stderr] 181 | |                         for j in 0..v.len() {
[INFO] [stderr] 182 | |                             reconstruct[j] += v[j] * scale;
[INFO] [stderr] ...   |
[INFO] [stderr] 185 | |                     _ => {},
[INFO] [stderr] 186 | |                 }
[INFO] [stderr]     | |_________________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 179 |                 if let Signal::Discrete(v) = &dict[idx] {
[INFO] [stderr] 180 |     for j in 0..v.len() {
[INFO] [stderr] 181 |         reconstruct[j] += v[j] * scale;
[INFO] [stderr] 182 |     }
[INFO] [stderr] 183 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 20 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `processig`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "7a98131e6ea42d8cb59c204ac5def978a779cca713e9becb265ee711674392da"`
[INFO] running `"docker" "rm" "-f" "7a98131e6ea42d8cb59c204ac5def978a779cca713e9becb265ee711674392da"`
[INFO] [stdout] 7a98131e6ea42d8cb59c204ac5def978a779cca713e9becb265ee711674392da