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[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbenjamintoofer%2Fjpeg_encoder.rs" "/workspace/builds/worker-52/source", kill_on_drop: false }`
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[INFO] started tweaking git repo https://github.com/benjamintoofer/jpeg_encoder.rs
[INFO] finished tweaking git repo https://github.com/benjamintoofer/jpeg_encoder.rs
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[INFO] crate git repo https://github.com/benjamintoofer/jpeg_encoder.rs already has a lockfile, it will not be regenerated
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[INFO] [stderr]    Migrating src/main.rs from 2018 edition to 2021
[INFO] [stderr]        Fixed src/jpeg.rs (1 fix)
[INFO] [stderr]        Fixed src/main.rs (12 fixes)
[INFO] [stderr]        Fixed src/decoder.rs (1 fix)
[INFO] [stdout] warning: value assigned to `length` is never read
[INFO] [stdout]   --> src/decoder.rs:19:17
[INFO] [stdout]    |
[INFO] [stdout] 19 |         let mut length: u16 = 0;
[INFO] [stdout]    |                 ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]        Fixed src/main.rs (1 fix)
[INFO] [stdout] warning: function is never used: `read_scan_header`
[INFO] [stdout]    --> src/decoder.rs:178:4
[INFO] [stdout]     |
[INFO] [stdout] 178 | fn read_scan_header(_scan_data: &[u8])-> Result<u32, String> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `BLOCK_SIZE`
[INFO] [stdout]   --> src/main.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | const BLOCK_SIZE: usize = 8usize;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `Q_50_luma`
[INFO] [stdout]   --> src/main.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | / const Q_50_luma: [[ i32; 8]; 8] = [
[INFO] [stdout] 18 | |     [16, 11, 10, 16, 24, 40, 51, 61],
[INFO] [stdout] 19 | |     [12, 12, 14, 19, 26, 58, 60, 55],
[INFO] [stdout] 20 | |     [14, 13, 16, 24, 40, 57, 69, 56],
[INFO] [stdout] ...  |
[INFO] [stdout] 25 | |     [72, 92, 95, 98, 112, 100, 103, 99]
[INFO] [stdout] 26 | | ];
[INFO] [stdout]    | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `Q_50_chroma`
[INFO] [stdout]   --> src/main.rs:28:1
[INFO] [stdout]    |
[INFO] [stdout] 28 | / const Q_50_chroma: [[ i32; 8]; 8] = [
[INFO] [stdout] 29 | |     [17, 18, 24, 47, 99, 99, 99, 99],
[INFO] [stdout] 30 | |     [18, 21, 26, 66, 99, 99, 99, 99],
[INFO] [stdout] 31 | |     [24, 26, 56, 99, 99, 99, 99, 99],
[INFO] [stdout] ...  |
[INFO] [stdout] 36 | |     [99, 99, 99, 99, 99, 99, 99, 99]
[INFO] [stdout] 37 | | ];
[INFO] [stdout]    | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `S`
[INFO] [stdout]   --> src/main.rs:39:1
[INFO] [stdout]    |
[INFO] [stdout] 39 | / const S: [f32; 8] = [
[INFO] [stdout] 40 | |     0.353553390593273762200422,
[INFO] [stdout] 41 | |     0.254897789552079584470970,
[INFO] [stdout] 42 | |     0.270598050073098492199862,
[INFO] [stdout] ...  |
[INFO] [stdout] 47 | |     1.281457723870753089398043,
[INFO] [stdout] 48 | | ];
[INFO] [stdout]    | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `A`
[INFO] [stdout]   --> src/main.rs:50:1
[INFO] [stdout]    |
[INFO] [stdout] 50 | / const A: [f32; 6] = [
[INFO] [stdout] 51 | |     std::f32::NAN,
[INFO] [stdout] 52 | |     0.707106781186547524400844,
[INFO] [stdout] 53 | |     0.541196100146196984399723,
[INFO] [stdout] ...  |
[INFO] [stdout] 56 | |     0.382683432365089771728460,
[INFO] [stdout] 57 | | ];
[INFO] [stdout]    | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `SubsampleType`
[INFO] [stdout]   --> src/main.rs:58:6
[INFO] [stdout]    |
[INFO] [stdout] 58 | enum SubsampleType {
[INFO] [stdout]    |      ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_row_divisor`
[INFO] [stdout]   --> src/main.rs:65:12
[INFO] [stdout]    |
[INFO] [stdout] 65 |     pub fn get_row_divisor(&self) -> u8 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_col_divisor`
[INFO] [stdout]   --> src/main.rs:73:12
[INFO] [stdout]    |
[INFO] [stdout] 73 |     pub fn get_col_divisor(&self) -> u8 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `compress_jpeg_brute`
[INFO] [stdout]    --> src/main.rs:166:4
[INFO] [stdout]     |
[INFO] [stdout] 166 | fn compress_jpeg_brute() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `transpose`
[INFO] [stdout]    --> src/main.rs:171:4
[INFO] [stdout]     |
[INFO] [stdout] 171 | fn transpose(matrix: &[[ f32; BLOCK_SIZE]; BLOCK_SIZE], new_matrix: &mut [[ f32; 8]; 8]) {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `rgb_2_ycrcb`
[INFO] [stdout]    --> src/main.rs:180:4
[INFO] [stdout]     |
[INFO] [stdout] 180 | fn rgb_2_ycrcb(r:u8, b: u8, g:u8) -> [f32; 3] {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `ycrcb_2_rgb`
[INFO] [stdout]    --> src/main.rs:197:4
[INFO] [stdout]     |
[INFO] [stdout] 197 | fn ycrcb_2_rgb(y:f32, cr:f32, cb: f32)-> [f32; 3] {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `down_sample`
[INFO] [stdout]    --> src/main.rs:210:4
[INFO] [stdout]     |
[INFO] [stdout] 210 | fn down_sample() -> u32 {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `multiply`
[INFO] [stdout]    --> src/main.rs:214:4
[INFO] [stdout]     |
[INFO] [stdout] 214 | fn multiply(matrix: &'static [[f32; 3]; 3], vector:[f32; 3]) -> [f32; 3] {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `add`
[INFO] [stdout]    --> src/main.rs:222:4
[INFO] [stdout]     |
[INFO] [stdout] 222 | fn add(vector_a: [f32; 3], vector_b: [f32; 3]) -> [f32; 3] {
[INFO] [stdout]     |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `subtract`
[INFO] [stdout]    --> src/main.rs:230:4
[INFO] [stdout]     |
[INFO] [stdout] 230 | fn subtract(vector_a: [f32; 3], vector_b: [f32; 3]) -> [f32; 3] {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `apply_discrete_cosine_transform`
[INFO] [stdout]    --> src/main.rs:238:4
[INFO] [stdout]     |
[INFO] [stdout] 238 | fn apply_discrete_cosine_transform() -> u8 {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `compress_jpeg_optimal`
[INFO] [stdout]    --> src/main.rs:248:4
[INFO] [stdout]     |
[INFO] [stdout] 248 | fn compress_jpeg_optimal() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `JPEGData`
[INFO] [stdout]    --> src/main.rs:251:8
[INFO] [stdout]     |
[INFO] [stdout] 251 | struct JPEGData {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_byte_pair`
[INFO] [stdout]    --> src/main.rs:258:12
[INFO] [stdout]     |
[INFO] [stdout] 258 |     pub fn to_byte_pair() -> u16 {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `entropy_encoding`
[INFO] [stdout]    --> src/main.rs:262:4
[INFO] [stdout]     |
[INFO] [stdout] 262 | fn entropy_encoding(_previous_dc: i32, block: [[ i32; 8]; 8]) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_zigzag`
[INFO] [stdout]    --> src/main.rs:267:4
[INFO] [stdout]     |
[INFO] [stdout] 267 | fn get_zigzag(block: &[[ i32; 8]; 8], buffer: &mut [i32; 64]) {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `generate_quantize_table_quality`
[INFO] [stdout]    --> src/main.rs:297:4
[INFO] [stdout]     |
[INFO] [stdout] 297 | fn generate_quantize_table_quality(table: [[ i32; 8]; 8], quality: i32, new_table: &mut [[ i32; 8]; 8]) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `divide_matrix`
[INFO] [stdout]    --> src/main.rs:313:4
[INFO] [stdout]     |
[INFO] [stdout] 313 | fn divide_matrix(matrix_a: &[[ f32; BLOCK_SIZE]; BLOCK_SIZE], matrix_b: &[[ i32; BLOCK_SIZE]; BLOCK_SIZE], matrix_buffer: &mut [[ i32; BL...
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `transform`
[INFO] [stdout]    --> src/main.rs:321:4
[INFO] [stdout]     |
[INFO] [stdout] 321 | fn transform(vector: &[f32; BLOCK_SIZE]) -> [f32; BLOCK_SIZE] {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `Q_50_luma` should have an upper case name
[INFO] [stdout]   --> src/main.rs:17:7
[INFO] [stdout]    |
[INFO] [stdout] 17 | const Q_50_luma: [[ i32; 8]; 8] = [
[INFO] [stdout]    |       ^^^^^^^^^ help: convert the identifier to upper case: `Q_50_LUMA`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `Q_50_chroma` should have an upper case name
[INFO] [stdout]   --> src/main.rs:28:7
[INFO] [stdout]    |
[INFO] [stdout] 28 | const Q_50_chroma: [[ i32; 8]; 8] = [
[INFO] [stdout]    |       ^^^^^^^^^^^ help: convert the identifier to upper case: `Q_50_CHROMA`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `offsetTotal` should have a snake case name
[INFO] [stdout]   --> src/jpeg.rs:74:17
[INFO] [stdout]    |
[INFO] [stdout] 74 |         let mut offsetTotal = 0;
[INFO] [stdout]    |                 ^^^^^^^^^^^ help: convert the identifier to snake case: `offset_total`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 30 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `length` is never read
[INFO] [stdout]   --> src/decoder.rs:19:17
[INFO] [stdout]    |
[INFO] [stdout] 19 |         let mut length: u16 = 0;
[INFO] [stdout]    |                 ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `read_scan_header`
[INFO] [stdout]    --> src/decoder.rs:178:4
[INFO] [stdout]     |
[INFO] [stdout] 178 | fn read_scan_header(_scan_data: &[u8])-> Result<u32, String> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `BLOCK_SIZE`
[INFO] [stdout]   --> src/main.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | const BLOCK_SIZE: usize = 8usize;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `Q_50_luma`
[INFO] [stdout]   --> src/main.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | / const Q_50_luma: [[ i32; 8]; 8] = [
[INFO] [stdout] 18 | |     [16, 11, 10, 16, 24, 40, 51, 61],
[INFO] [stdout] 19 | |     [12, 12, 14, 19, 26, 58, 60, 55],
[INFO] [stdout] 20 | |     [14, 13, 16, 24, 40, 57, 69, 56],
[INFO] [stdout] ...  |
[INFO] [stdout] 25 | |     [72, 92, 95, 98, 112, 100, 103, 99]
[INFO] [stdout] 26 | | ];
[INFO] [stdout]    | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `Q_50_chroma`
[INFO] [stdout]   --> src/main.rs:28:1
[INFO] [stdout]    |
[INFO] [stdout] 28 | / const Q_50_chroma: [[ i32; 8]; 8] = [
[INFO] [stdout] 29 | |     [17, 18, 24, 47, 99, 99, 99, 99],
[INFO] [stdout] 30 | |     [18, 21, 26, 66, 99, 99, 99, 99],
[INFO] [stdout] 31 | |     [24, 26, 56, 99, 99, 99, 99, 99],
[INFO] [stdout] ...  |
[INFO] [stdout] 36 | |     [99, 99, 99, 99, 99, 99, 99, 99]
[INFO] [stdout] 37 | | ];
[INFO] [stdout]    | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `S`
[INFO] [stdout]   --> src/main.rs:39:1
[INFO] [stdout]    |
[INFO] [stdout] 39 | / const S: [f32; 8] = [
[INFO] [stdout] 40 | |     0.353553390593273762200422,
[INFO] [stdout] 41 | |     0.254897789552079584470970,
[INFO] [stdout] 42 | |     0.270598050073098492199862,
[INFO] [stdout] ...  |
[INFO] [stdout] 47 | |     1.281457723870753089398043,
[INFO] [stdout] 48 | | ];
[INFO] [stdout]    | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `A`
[INFO] [stdout]   --> src/main.rs:50:1
[INFO] [stdout]    |
[INFO] [stdout] 50 | / const A: [f32; 6] = [
[INFO] [stdout] 51 | |     std::f32::NAN,
[INFO] [stdout] 52 | |     0.707106781186547524400844,
[INFO] [stdout] 53 | |     0.541196100146196984399723,
[INFO] [stdout] ...  |
[INFO] [stdout] 56 | |     0.382683432365089771728460,
[INFO] [stdout] 57 | | ];
[INFO] [stdout]    | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `SubsampleType`
[INFO] [stdout]   --> src/main.rs:58:6
[INFO] [stdout]    |
[INFO] [stdout] 58 | enum SubsampleType {
[INFO] [stdout]    |      ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_row_divisor`
[INFO] [stdout]   --> src/main.rs:65:12
[INFO] [stdout]    |
[INFO] [stdout] 65 |     pub fn get_row_divisor(&self) -> u8 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_col_divisor`
[INFO] [stdout]   --> src/main.rs:73:12
[INFO] [stdout]    |
[INFO] [stdout] 73 |     pub fn get_col_divisor(&self) -> u8 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `compress_jpeg_brute`
[INFO] [stdout]    --> src/main.rs:166:4
[INFO] [stdout]     |
[INFO] [stdout] 166 | fn compress_jpeg_brute() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `transpose`
[INFO] [stdout]    --> src/main.rs:171:4
[INFO] [stdout]     |
[INFO] [stdout] 171 | fn transpose(matrix: &[[ f32; BLOCK_SIZE]; BLOCK_SIZE], new_matrix: &mut [[ f32; 8]; 8]) {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `rgb_2_ycrcb`
[INFO] [stdout]    --> src/main.rs:180:4
[INFO] [stdout]     |
[INFO] [stdout] 180 | fn rgb_2_ycrcb(r:u8, b: u8, g:u8) -> [f32; 3] {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `ycrcb_2_rgb`
[INFO] [stdout]    --> src/main.rs:197:4
[INFO] [stdout]     |
[INFO] [stdout] 197 | fn ycrcb_2_rgb(y:f32, cr:f32, cb: f32)-> [f32; 3] {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `down_sample`
[INFO] [stdout]    --> src/main.rs:210:4
[INFO] [stdout]     |
[INFO] [stdout] 210 | fn down_sample() -> u32 {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `multiply`
[INFO] [stdout]    --> src/main.rs:214:4
[INFO] [stdout]     |
[INFO] [stdout] 214 | fn multiply(matrix: &'static [[f32; 3]; 3], vector:[f32; 3]) -> [f32; 3] {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `add`
[INFO] [stdout]    --> src/main.rs:222:4
[INFO] [stdout]     |
[INFO] [stdout] 222 | fn add(vector_a: [f32; 3], vector_b: [f32; 3]) -> [f32; 3] {
[INFO] [stdout]     |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `subtract`
[INFO] [stdout]    --> src/main.rs:230:4
[INFO] [stdout]     |
[INFO] [stdout] 230 | fn subtract(vector_a: [f32; 3], vector_b: [f32; 3]) -> [f32; 3] {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `apply_discrete_cosine_transform`
[INFO] [stdout]    --> src/main.rs:238:4
[INFO] [stdout]     |
[INFO] [stdout] 238 | fn apply_discrete_cosine_transform() -> u8 {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `compress_jpeg_optimal`
[INFO] [stdout]    --> src/main.rs:248:4
[INFO] [stdout]     |
[INFO] [stdout] 248 | fn compress_jpeg_optimal() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `JPEGData`
[INFO] [stdout]    --> src/main.rs:251:8
[INFO] [stdout]     |
[INFO] [stdout] 251 | struct JPEGData {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_byte_pair`
[INFO] [stdout]    --> src/main.rs:258:12
[INFO] [stdout]     |
[INFO] [stdout] 258 |     pub fn to_byte_pair() -> u16 {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `entropy_encoding`
[INFO] [stdout]    --> src/main.rs:262:4
[INFO] [stdout]     |
[INFO] [stdout] 262 | fn entropy_encoding(_previous_dc: i32, block: [[ i32; 8]; 8]) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_zigzag`
[INFO] [stdout]    --> src/main.rs:267:4
[INFO] [stdout]     |
[INFO] [stdout] 267 | fn get_zigzag(block: &[[ i32; 8]; 8], buffer: &mut [i32; 64]) {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `generate_quantize_table_quality`
[INFO] [stdout]    --> src/main.rs:297:4
[INFO] [stdout]     |
[INFO] [stdout] 297 | fn generate_quantize_table_quality(table: [[ i32; 8]; 8], quality: i32, new_table: &mut [[ i32; 8]; 8]) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `divide_matrix`
[INFO] [stdout]    --> src/main.rs:313:4
[INFO] [stdout]     |
[INFO] [stdout] 313 | fn divide_matrix(matrix_a: &[[ f32; BLOCK_SIZE]; BLOCK_SIZE], matrix_b: &[[ i32; BLOCK_SIZE]; BLOCK_SIZE], matrix_buffer: &mut [[ i32; BL...
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `transform`
[INFO] [stdout]    --> src/main.rs:321:4
[INFO] [stdout]     |
[INFO] [stdout] 321 | fn transform(vector: &[f32; BLOCK_SIZE]) -> [f32; BLOCK_SIZE] {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `Q_50_luma` should have an upper case name
[INFO] [stdout]   --> src/main.rs:17:7
[INFO] [stdout]    |
[INFO] [stdout] 17 | const Q_50_luma: [[ i32; 8]; 8] = [
[INFO] [stdout]    |       ^^^^^^^^^ help: convert the identifier to upper case: `Q_50_LUMA`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `Q_50_chroma` should have an upper case name
[INFO] [stdout]   --> src/main.rs:28:7
[INFO] [stdout]    |
[INFO] [stdout] 28 | const Q_50_chroma: [[ i32; 8]; 8] = [
[INFO] [stdout]    |       ^^^^^^^^^^^ help: convert the identifier to upper case: `Q_50_CHROMA`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `offsetTotal` should have a snake case name
[INFO] [stdout]   --> src/jpeg.rs:74:17
[INFO] [stdout]    |
[INFO] [stdout] 74 |         let mut offsetTotal = 0;
[INFO] [stdout]    |                 ^^^^^^^^^^^ help: convert the identifier to snake case: `offset_total`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 30 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.67s
[INFO] [stderr] Running `cargo check` to verify 2021
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking jpeg_encoder v0.1.0 (/tmp/fixit)
[INFO] [stdout] warning: value assigned to `length` is never read
[INFO] [stdout]   --> src/decoder.rs:19:17
[INFO] [stdout]    |
[INFO] [stdout] 19 |         let mut length: u16 = 0;
[INFO] [stdout]    |                 ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `length` is never read
[INFO] [stdout]   --> src/decoder.rs:19:17
[INFO] [stdout]    |
[INFO] [stdout] 19 |         let mut length: u16 = 0;
[INFO] [stdout]    |                 ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `read_scan_header`
[INFO] [stdout]    --> src/decoder.rs:178:4
[INFO] [stdout]     |
[INFO] [stdout] 178 | fn read_scan_header(_scan_data: &[u8])-> Result<u32, String> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `BLOCK_SIZE`
[INFO] [stdout]   --> src/main.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | const BLOCK_SIZE: usize = 8usize;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `Q_50_luma`
[INFO] [stdout]   --> src/main.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | / const Q_50_luma: [[ i32; 8]; 8] = [
[INFO] [stdout] 18 | |     [16, 11, 10, 16, 24, 40, 51, 61],
[INFO] [stdout] 19 | |     [12, 12, 14, 19, 26, 58, 60, 55],
[INFO] [stdout] 20 | |     [14, 13, 16, 24, 40, 57, 69, 56],
[INFO] [stdout] ...  |
[INFO] [stdout] 25 | |     [72, 92, 95, 98, 112, 100, 103, 99]
[INFO] [stdout] 26 | | ];
[INFO] [stdout]    | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `Q_50_chroma`
[INFO] [stdout]   --> src/main.rs:28:1
[INFO] [stdout]    |
[INFO] [stdout] 28 | / const Q_50_chroma: [[ i32; 8]; 8] = [
[INFO] [stdout] 29 | |     [17, 18, 24, 47, 99, 99, 99, 99],
[INFO] [stdout] 30 | |     [18, 21, 26, 66, 99, 99, 99, 99],
[INFO] [stdout] 31 | |     [24, 26, 56, 99, 99, 99, 99, 99],
[INFO] [stdout] ...  |
[INFO] [stdout] 36 | |     [99, 99, 99, 99, 99, 99, 99, 99]
[INFO] [stdout] 37 | | ];
[INFO] [stdout]    | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `S`
[INFO] [stdout]   --> src/main.rs:39:1
[INFO] [stdout]    |
[INFO] [stdout] 39 | / const S: [f32; 8] = [
[INFO] [stdout] 40 | |     0.353553390593273762200422,
[INFO] [stdout] 41 | |     0.254897789552079584470970,
[INFO] [stdout] 42 | |     0.270598050073098492199862,
[INFO] [stdout] ...  |
[INFO] [stdout] 47 | |     1.281457723870753089398043,
[INFO] [stdout] 48 | | ];
[INFO] [stdout]    | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `A`
[INFO] [stdout]   --> src/main.rs:50:1
[INFO] [stdout]    |
[INFO] [stdout] 50 | / const A: [f32; 6] = [
[INFO] [stdout] 51 | |     std::f32::NAN,
[INFO] [stdout] 52 | |     0.707106781186547524400844,
[INFO] [stdout] 53 | |     0.541196100146196984399723,
[INFO] [stdout] ...  |
[INFO] [stdout] 56 | |     0.382683432365089771728460,
[INFO] [stdout] 57 | | ];
[INFO] [stdout]    | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `SubsampleType`
[INFO] [stdout]   --> src/main.rs:58:6
[INFO] [stdout]    |
[INFO] [stdout] 58 | enum SubsampleType {
[INFO] [stdout]    |      ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_row_divisor`
[INFO] [stdout]   --> src/main.rs:65:12
[INFO] [stdout]    |
[INFO] [stdout] 65 |     pub fn get_row_divisor(&self) -> u8 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_col_divisor`
[INFO] [stdout]   --> src/main.rs:73:12
[INFO] [stdout]    |
[INFO] [stdout] 73 |     pub fn get_col_divisor(&self) -> u8 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `compress_jpeg_brute`
[INFO] [stdout]    --> src/main.rs:166:4
[INFO] [stdout]     |
[INFO] [stdout] 166 | fn compress_jpeg_brute() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `transpose`
[INFO] [stdout]    --> src/main.rs:171:4
[INFO] [stdout]     |
[INFO] [stdout] 171 | fn transpose(matrix: &[[ f32; BLOCK_SIZE]; BLOCK_SIZE], new_matrix: &mut [[ f32; 8]; 8]) {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `rgb_2_ycrcb`
[INFO] [stdout]    --> src/main.rs:180:4
[INFO] [stdout]     |
[INFO] [stdout] 180 | fn rgb_2_ycrcb(r:u8, b: u8, g:u8) -> [f32; 3] {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `ycrcb_2_rgb`
[INFO] [stdout]    --> src/main.rs:197:4
[INFO] [stdout]     |
[INFO] [stdout] 197 | fn ycrcb_2_rgb(y:f32, cr:f32, cb: f32)-> [f32; 3] {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `down_sample`
[INFO] [stdout]    --> src/main.rs:210:4
[INFO] [stdout]     |
[INFO] [stdout] 210 | fn down_sample() -> u32 {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `multiply`
[INFO] [stdout]    --> src/main.rs:214:4
[INFO] [stdout]     |
[INFO] [stdout] 214 | fn multiply(matrix: &'static [[f32; 3]; 3], vector:[f32; 3]) -> [f32; 3] {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `add`
[INFO] [stdout]    --> src/main.rs:222:4
[INFO] [stdout]     |
[INFO] [stdout] 222 | fn add(vector_a: [f32; 3], vector_b: [f32; 3]) -> [f32; 3] {
[INFO] [stdout]     |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `subtract`
[INFO] [stdout]    --> src/main.rs:230:4
[INFO] [stdout]     |
[INFO] [stdout] 230 | fn subtract(vector_a: [f32; 3], vector_b: [f32; 3]) -> [f32; 3] {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `apply_discrete_cosine_transform`
[INFO] [stdout]    --> src/main.rs:238:4
[INFO] [stdout]     |
[INFO] [stdout] 238 | fn apply_discrete_cosine_transform() -> u8 {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `compress_jpeg_optimal`
[INFO] [stdout]    --> src/main.rs:248:4
[INFO] [stdout]     |
[INFO] [stdout] 248 | fn compress_jpeg_optimal() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `JPEGData`
[INFO] [stdout]    --> src/main.rs:251:8
[INFO] [stdout]     |
[INFO] [stdout] 251 | struct JPEGData {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_byte_pair`
[INFO] [stdout]    --> src/main.rs:258:12
[INFO] [stdout]     |
[INFO] [stdout] 258 |     pub fn to_byte_pair() -> u16 {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `entropy_encoding`
[INFO] [stdout]    --> src/main.rs:262:4
[INFO] [stdout]     |
[INFO] [stdout] 262 | fn entropy_encoding(_previous_dc: i32, block: [[ i32; 8]; 8]) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_zigzag`
[INFO] [stdout]    --> src/main.rs:267:4
[INFO] [stdout]     |
[INFO] [stdout] 267 | fn get_zigzag(block: &[[ i32; 8]; 8], buffer: &mut [i32; 64]) {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `generate_quantize_table_quality`
[INFO] [stdout]    --> src/main.rs:297:4
[INFO] [stdout]     |
[INFO] [stdout] 297 | fn generate_quantize_table_quality(table: [[ i32; 8]; 8], quality: i32, new_table: &mut [[ i32; 8]; 8]) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `divide_matrix`
[INFO] [stdout]    --> src/main.rs:313:4
[INFO] [stdout]     |
[INFO] [stdout] 313 | fn divide_matrix(matrix_a: &[[ f32; BLOCK_SIZE]; BLOCK_SIZE], matrix_b: &[[ i32; BLOCK_SIZE]; BLOCK_SIZE], matrix_buffer: &mut [[ i32; BL...
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `transform`
[INFO] [stdout]    --> src/main.rs:321:4
[INFO] [stdout]     |
[INFO] [stdout] 321 | fn transform(vector: &[f32; BLOCK_SIZE]) -> [f32; BLOCK_SIZE] {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `Q_50_luma` should have an upper case name
[INFO] [stdout]   --> src/main.rs:17:7
[INFO] [stdout]    |
[INFO] [stdout] 17 | const Q_50_luma: [[ i32; 8]; 8] = [
[INFO] [stdout]    |       ^^^^^^^^^ help: convert the identifier to upper case: `Q_50_LUMA`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `Q_50_chroma` should have an upper case name
[INFO] [stdout]   --> src/main.rs:28:7
[INFO] [stdout]    |
[INFO] [stdout] 28 | const Q_50_chroma: [[ i32; 8]; 8] = [
[INFO] [stdout]    |       ^^^^^^^^^^^ help: convert the identifier to upper case: `Q_50_CHROMA`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `offsetTotal` should have a snake case name
[INFO] [stdout]   --> src/jpeg.rs:74:17
[INFO] [stdout]    |
[INFO] [stdout] 74 |         let mut offsetTotal = 0;
[INFO] [stdout]    |                 ^^^^^^^^^^^ help: convert the identifier to snake case: `offset_total`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `read_scan_header`
[INFO] [stdout]    --> src/decoder.rs:178:4
[INFO] [stdout]     |
[INFO] [stdout] 178 | fn read_scan_header(_scan_data: &[u8])-> Result<u32, String> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `BLOCK_SIZE`
[INFO] [stdout]   --> src/main.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | const BLOCK_SIZE: usize = 8usize;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `Q_50_luma`
[INFO] [stdout]   --> src/main.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | / const Q_50_luma: [[ i32; 8]; 8] = [
[INFO] [stdout] 18 | |     [16, 11, 10, 16, 24, 40, 51, 61],
[INFO] [stdout] 19 | |     [12, 12, 14, 19, 26, 58, 60, 55],
[INFO] [stdout] 20 | |     [14, 13, 16, 24, 40, 57, 69, 56],
[INFO] [stdout] ...  |
[INFO] [stdout] 25 | |     [72, 92, 95, 98, 112, 100, 103, 99]
[INFO] [stdout] 26 | | ];
[INFO] [stdout]    | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `Q_50_chroma`
[INFO] [stdout]   --> src/main.rs:28:1
[INFO] [stdout]    |
[INFO] [stdout] 28 | / const Q_50_chroma: [[ i32; 8]; 8] = [
[INFO] [stdout] 29 | |     [17, 18, 24, 47, 99, 99, 99, 99],
[INFO] [stdout] 30 | |     [18, 21, 26, 66, 99, 99, 99, 99],
[INFO] [stdout] 31 | |     [24, 26, 56, 99, 99, 99, 99, 99],
[INFO] [stdout] ...  |
[INFO] [stdout] 36 | |     [99, 99, 99, 99, 99, 99, 99, 99]
[INFO] [stdout] 37 | | ];
[INFO] [stdout]    | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `S`
[INFO] [stdout]   --> src/main.rs:39:1
[INFO] [stdout]    |
[INFO] [stdout] 39 | / const S: [f32; 8] = [
[INFO] [stdout] 40 | |     0.353553390593273762200422,
[INFO] [stdout] 41 | |     0.254897789552079584470970,
[INFO] [stdout] 42 | |     0.270598050073098492199862,
[INFO] [stdout] ...  |
[INFO] [stdout] 47 | |     1.281457723870753089398043,
[INFO] [stdout] 48 | | ];
[INFO] [stdout]    | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `A`
[INFO] [stdout]   --> src/main.rs:50:1
[INFO] [stdout]    |
[INFO] [stdout] 50 | / const A: [f32; 6] = [
[INFO] [stdout] 51 | |     std::f32::NAN,
[INFO] [stdout] 52 | |     0.707106781186547524400844,
[INFO] [stdout] 53 | |     0.541196100146196984399723,
[INFO] [stdout] ...  |
[INFO] [stdout] 56 | |     0.382683432365089771728460,
[INFO] [stdout] 57 | | ];
[INFO] [stdout]    | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `SubsampleType`
[INFO] [stdout]   --> src/main.rs:58:6
[INFO] [stdout]    |
[INFO] [stdout] 58 | enum SubsampleType {
[INFO] [stdout]    |      ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_row_divisor`
[INFO] [stdout]   --> src/main.rs:65:12
[INFO] [stdout]    |
[INFO] [stdout] 65 |     pub fn get_row_divisor(&self) -> u8 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_col_divisor`
[INFO] [stdout]   --> src/main.rs:73:12
[INFO] [stdout]    |
[INFO] [stdout] 73 |     pub fn get_col_divisor(&self) -> u8 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `compress_jpeg_brute`
[INFO] [stdout]    --> src/main.rs:166:4
[INFO] [stdout]     |
[INFO] [stdout] 166 | fn compress_jpeg_brute() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `transpose`
[INFO] [stdout]    --> src/main.rs:171:4
[INFO] [stdout]     |
[INFO] [stdout] 171 | fn transpose(matrix: &[[ f32; BLOCK_SIZE]; BLOCK_SIZE], new_matrix: &mut [[ f32; 8]; 8]) {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `rgb_2_ycrcb`
[INFO] [stdout]    --> src/main.rs:180:4
[INFO] [stdout]     |
[INFO] [stdout] 180 | fn rgb_2_ycrcb(r:u8, b: u8, g:u8) -> [f32; 3] {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `ycrcb_2_rgb`
[INFO] [stdout]    --> src/main.rs:197:4
[INFO] [stdout]     |
[INFO] [stdout] 197 | fn ycrcb_2_rgb(y:f32, cr:f32, cb: f32)-> [f32; 3] {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `down_sample`
[INFO] [stdout]    --> src/main.rs:210:4
[INFO] [stdout]     |
[INFO] [stdout] 210 | fn down_sample() -> u32 {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `multiply`
[INFO] [stdout]    --> src/main.rs:214:4
[INFO] [stdout]     |
[INFO] [stdout] 214 | fn multiply(matrix: &'static [[f32; 3]; 3], vector:[f32; 3]) -> [f32; 3] {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `add`
[INFO] [stdout]    --> src/main.rs:222:4
[INFO] [stdout]     |
[INFO] [stdout] 222 | fn add(vector_a: [f32; 3], vector_b: [f32; 3]) -> [f32; 3] {
[INFO] [stdout]     |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `subtract`
[INFO] [stdout]    --> src/main.rs:230:4
[INFO] [stdout]     |
[INFO] [stdout] 230 | fn subtract(vector_a: [f32; 3], vector_b: [f32; 3]) -> [f32; 3] {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `apply_discrete_cosine_transform`
[INFO] [stdout]    --> src/main.rs:238:4
[INFO] [stdout]     |
[INFO] [stdout] 238 | fn apply_discrete_cosine_transform() -> u8 {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `compress_jpeg_optimal`
[INFO] [stdout]    --> src/main.rs:248:4
[INFO] [stdout]     |
[INFO] [stdout] 248 | fn compress_jpeg_optimal() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `JPEGData`
[INFO] [stdout]    --> src/main.rs:251:8
[INFO] [stdout]     |
[INFO] [stdout] 251 | struct JPEGData {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_byte_pair`
[INFO] [stdout]    --> src/main.rs:258:12
[INFO] [stdout]     |
[INFO] [stdout] 258 |     pub fn to_byte_pair() -> u16 {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `entropy_encoding`
[INFO] [stdout]    --> src/main.rs:262:4
[INFO] [stdout]     |
[INFO] [stdout] 262 | fn entropy_encoding(_previous_dc: i32, block: [[ i32; 8]; 8]) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_zigzag`
[INFO] [stdout]    --> src/main.rs:267:4
[INFO] [stdout]     |
[INFO] [stdout] 267 | fn get_zigzag(block: &[[ i32; 8]; 8], buffer: &mut [i32; 64]) {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `generate_quantize_table_quality`
[INFO] [stdout]    --> src/main.rs:297:4
[INFO] [stdout]     |
[INFO] [stdout] 297 | fn generate_quantize_table_quality(table: [[ i32; 8]; 8], quality: i32, new_table: &mut [[ i32; 8]; 8]) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `divide_matrix`
[INFO] [stdout]    --> src/main.rs:313:4
[INFO] [stdout]     |
[INFO] [stdout] 313 | fn divide_matrix(matrix_a: &[[ f32; BLOCK_SIZE]; BLOCK_SIZE], matrix_b: &[[ i32; BLOCK_SIZE]; BLOCK_SIZE], matrix_buffer: &mut [[ i32; BL...
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `transform`
[INFO] [stdout]    --> src/main.rs:321:4
[INFO] [stdout]     |
[INFO] [stdout] 321 | fn transform(vector: &[f32; BLOCK_SIZE]) -> [f32; BLOCK_SIZE] {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `Q_50_luma` should have an upper case name
[INFO] [stdout]   --> src/main.rs:17:7
[INFO] [stdout]    |
[INFO] [stdout] 17 | const Q_50_luma: [[ i32; 8]; 8] = [
[INFO] [stdout]    |       ^^^^^^^^^ help: convert the identifier to upper case: `Q_50_LUMA`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `Q_50_chroma` should have an upper case name
[INFO] [stdout]   --> src/main.rs:28:7
[INFO] [stdout]    |
[INFO] [stdout] 28 | const Q_50_chroma: [[ i32; 8]; 8] = [
[INFO] [stdout]    |       ^^^^^^^^^^^ help: convert the identifier to upper case: `Q_50_CHROMA`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `offsetTotal` should have a snake case name
[INFO] [stdout]   --> src/jpeg.rs:74:17
[INFO] [stdout]    |
[INFO] [stdout] 74 |         let mut offsetTotal = 0;
[INFO] [stdout]    |                 ^^^^^^^^^^^ help: convert the identifier to snake case: `offset_total`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 30 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 30 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.83s
[INFO] running `Command { std: "docker" "inspect" "303eceb4c3dc956c863d1e09d645d6f9ea16f9f51d442364504ed0dee27b6035", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "303eceb4c3dc956c863d1e09d645d6f9ea16f9f51d442364504ed0dee27b6035", kill_on_drop: false }`
[INFO] [stdout] 303eceb4c3dc956c863d1e09d645d6f9ea16f9f51d442364504ed0dee27b6035