[INFO] cloning repository https://github.com/benjamintoofer/jpeg_encoder.rs [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/benjamintoofer/jpeg_encoder.rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbenjamintoofer%2Fjpeg_encoder.rs", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbenjamintoofer%2Fjpeg_encoder.rs'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 44387fdfe6fa290d626f75e231afd79405bc7cb3 [INFO] checking benjamintoofer/jpeg_encoder.rs against try#b20a093d9fb1ffaa04ae9852cb034864a992bafd for pr-85073 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbenjamintoofer%2Fjpeg_encoder.rs" "/workspace/builds/worker-7/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/benjamintoofer/jpeg_encoder.rs on toolchain b20a093d9fb1ffaa04ae9852cb034864a992bafd [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/benjamintoofer/jpeg_encoder.rs [INFO] finished tweaking git repo https://github.com/benjamintoofer/jpeg_encoder.rs [INFO] tweaked toml for git repo https://github.com/benjamintoofer/jpeg_encoder.rs written to /workspace/builds/worker-7/source/Cargo.toml [INFO] crate git repo https://github.com/benjamintoofer/jpeg_encoder.rs already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded ndarray v0.15.1 [INFO] [stderr] Downloaded rustfft v5.1.0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 400191786dca1c40021201fbe3db518f71137b15edf1bf2a9689b0b07269dfb5 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "400191786dca1c40021201fbe3db518f71137b15edf1bf2a9689b0b07269dfb5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "400191786dca1c40021201fbe3db518f71137b15edf1bf2a9689b0b07269dfb5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "400191786dca1c40021201fbe3db518f71137b15edf1bf2a9689b0b07269dfb5", kill_on_drop: false }` [INFO] [stdout] 400191786dca1c40021201fbe3db518f71137b15edf1bf2a9689b0b07269dfb5 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 930d51c78c5645dc6ca4ab3dd91a116585e31f170c579f1c1bb8200885e0ecc6 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "930d51c78c5645dc6ca4ab3dd91a116585e31f170c579f1c1bb8200885e0ecc6", kill_on_drop: false }` [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Checking cfg-if v1.0.0 [INFO] [stderr] Checking lazy_static v1.4.0 [INFO] [stderr] Compiling libc v0.2.93 [INFO] [stderr] Compiling rayon-core v1.9.0 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Compiling crc32fast v1.2.1 [INFO] [stderr] Checking adler32 v1.2.0 [INFO] [stderr] Checking byteorder v1.4.3 [INFO] [stderr] Checking strength_reduce v0.2.3 [INFO] [stderr] Checking rawpointer v0.2.1 [INFO] [stderr] Checking bytemuck v1.5.1 [INFO] [stderr] Checking scoped_threadpool v0.1.9 [INFO] [stderr] Checking matrixmultiply v0.3.1 [INFO] [stderr] Checking miniz_oxide v0.3.7 [INFO] [stderr] Checking deflate v0.8.6 [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling num-integer v0.1.44 [INFO] [stderr] Compiling crossbeam-utils v0.8.3 [INFO] [stderr] Compiling memoffset v0.6.3 [INFO] [stderr] Compiling rayon v1.5.0 [INFO] [stderr] Compiling miniz_oxide v0.4.4 [INFO] [stderr] Compiling num-iter v0.1.42 [INFO] [stderr] Compiling num-rational v0.3.2 [INFO] [stderr] Checking png v0.16.8 [INFO] [stderr] Checking num_cpus v1.13.0 [INFO] [stderr] Checking crossbeam-epoch v0.9.3 [INFO] [stderr] Checking crossbeam-channel v0.5.1 [INFO] [stderr] Checking num-complex v0.3.1 [INFO] [stderr] Checking num-complex v0.4.0 [INFO] [stderr] Checking crossbeam-deque v0.8.0 [INFO] [stderr] Checking transpose v0.2.1 [INFO] [stderr] Checking primal-check v0.3.1 [INFO] [stderr] Checking ndarray v0.15.1 [INFO] [stderr] Checking rustfft v5.1.0 [INFO] [stderr] Checking jpeg-decoder v0.1.22 [INFO] [stderr] Checking tiff v0.6.1 [INFO] [stderr] Checking image v0.23.14 [INFO] [stderr] Checking rustdct v0.6.0 [INFO] [stderr] Checking jpeg_encoder v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused imports: `EncodableLayout`, `GenericImageView`, `Pixel` [INFO] [stdout] --> src/main.rs:1:19 [INFO] [stdout] | [INFO] [stdout] 1 | use image::{self, EncodableLayout, GenericImageView, Pixel}; [INFO] [stdout] | ^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^ ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `ndarray::arr2` [INFO] [stdout] --> src/main.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use ndarray::arr2; [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `EncodableLayout`, `GenericImageView`, `Pixel` [INFO] [stdout] --> src/main.rs:1:19 [INFO] [stdout] | [INFO] [stdout] 1 | use image::{self, EncodableLayout, GenericImageView, Pixel}; [INFO] [stdout] | ^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^ ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `ndarray::arr2` [INFO] [stdout] --> src/main.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use ndarray::arr2; [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `file` [INFO] [stdout] --> src/main.rs:78:9 [INFO] [stdout] | [INFO] [stdout] 78 | let file = "./assets/image_1.jpg"; [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_file` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `input` [INFO] [stdout] --> src/main.rs:118:13 [INFO] [stdout] | [INFO] [stdout] 118 | let mut input = [0f32; 8]; [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_input` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `intermediate` [INFO] [stdout] --> src/main.rs:119:13 [INFO] [stdout] | [INFO] [stdout] 119 | let mut intermediate = [5f32; 8]; [INFO] [stdout] | ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_intermediate` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `output` [INFO] [stdout] --> src/main.rs:120:13 [INFO] [stdout] | [INFO] [stdout] 120 | let mut output = [0f32; 8]; [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_output` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `temp` [INFO] [stdout] --> src/main.rs:250:9 [INFO] [stdout] | [INFO] [stdout] 250 | let temp = get_zigzag(&block, &mut buffer); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_temp` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `previous_dc` [INFO] [stdout] --> src/main.rs:248:21 [INFO] [stdout] | [INFO] [stdout] 248 | fn entropy_encoding(previous_dc: i32, block: [[ i32; 8]; 8]) { [INFO] [stdout] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_previous_dc` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:90:9 [INFO] [stdout] | [INFO] [stdout] 90 | let mut y_prime:[[ f32; 8]; 8] = [ [INFO] [stdout] | ----^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:118:9 [INFO] [stdout] | [INFO] [stdout] 118 | let mut input = [0f32; 8]; [INFO] [stdout] | ----^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:119:9 [INFO] [stdout] | [INFO] [stdout] 119 | let mut intermediate = [5f32; 8]; [INFO] [stdout] | ----^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:120:9 [INFO] [stdout] | [INFO] [stdout] 120 | let mut output = [0f32; 8]; [INFO] [stdout] | ----^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant is never used: `Q_50_chroma` [INFO] [stdout] --> src/main.rs:22:1 [INFO] [stdout] | [INFO] [stdout] 22 | / const Q_50_chroma: [[ i32; 8]; 8] = [ [INFO] [stdout] 23 | | [17, 18, 24, 47, 99, 99, 99, 99], [INFO] [stdout] 24 | | [18, 21, 26, 66, 99, 99, 99, 99], [INFO] [stdout] 25 | | [24, 26, 56, 99, 99, 99, 99, 99], [INFO] [stdout] ... | [INFO] [stdout] 30 | | [99, 99, 99, 99, 99, 99, 99, 99] [INFO] [stdout] 31 | | ]; [INFO] [stdout] | |__^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum is never used: `SubsampleType` [INFO] [stdout] --> src/main.rs:52:6 [INFO] [stdout] | [INFO] [stdout] 52 | enum SubsampleType { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `get_row_divisor` [INFO] [stdout] --> src/main.rs:59:12 [INFO] [stdout] | [INFO] [stdout] 59 | 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:67:12 [INFO] [stdout] | [INFO] [stdout] 67 | 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:152:4 [INFO] [stdout] | [INFO] [stdout] 152 | fn compress_jpeg_brute() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `rgb_2_ycrcb` [INFO] [stdout] --> src/main.rs:166:4 [INFO] [stdout] | [INFO] [stdout] 166 | 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:183:4 [INFO] [stdout] | [INFO] [stdout] 183 | 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:196:4 [INFO] [stdout] | [INFO] [stdout] 196 | fn down_sample() -> u32 { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `multiply` [INFO] [stdout] --> src/main.rs:200:4 [INFO] [stdout] | [INFO] [stdout] 200 | 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:208:4 [INFO] [stdout] | [INFO] [stdout] 208 | 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:216:4 [INFO] [stdout] | [INFO] [stdout] 216 | 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:224:4 [INFO] [stdout] | [INFO] [stdout] 224 | 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:234:4 [INFO] [stdout] | [INFO] [stdout] 234 | fn compress_jpeg_optimal() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `JPEGData` [INFO] [stdout] --> src/main.rs:237:8 [INFO] [stdout] | [INFO] [stdout] 237 | struct JPEGData { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `to_byte_pair` [INFO] [stdout] --> src/main.rs:244:12 [INFO] [stdout] | [INFO] [stdout] 244 | 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:248:4 [INFO] [stdout] | [INFO] [stdout] 248 | fn entropy_encoding(previous_dc: i32, block: [[ i32; 8]; 8]) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: this method call currently resolves to `<&[T; N] as IntoIterator>::into_iter` (due to autoref coercions), but that might change in the future when `IntoIterator` impls for arrays are added. [INFO] [stdout] --> src/main.rs:131:30 [INFO] [stdout] | [INFO] [stdout] 131 | for (i, elem) in y_prime.into_iter().enumerate() { [INFO] [stdout] | ^^^^^^^^^ help: use `.iter()` instead of `.into_iter()` to avoid ambiguity: `iter` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(array_into_iter)]` on by default [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stdout] = note: for more information, see issue #66145 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: this method call currently resolves to `<&[T; N] as IntoIterator>::into_iter` (due to autoref coercions), but that might change in the future when `IntoIterator` impls for arrays are added. [INFO] [stdout] --> src/main.rs:137:33 [INFO] [stdout] | [INFO] [stdout] 137 | for (i, elem) in transposed.into_iter().enumerate() { [INFO] [stdout] | ^^^^^^^^^ help: use `.iter()` instead of `.into_iter()` to avoid ambiguity: `iter` [INFO] [stdout] | [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stdout] = note: for more information, see issue #66145 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant `Q_50_luma` should have an upper case name [INFO] [stdout] --> src/main.rs:11:7 [INFO] [stdout] | [INFO] [stdout] 11 | 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:22:7 [INFO] [stdout] | [INFO] [stdout] 22 | 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: unused variable: `file` [INFO] [stdout] --> src/main.rs:78:9 [INFO] [stdout] | [INFO] [stdout] 78 | let file = "./assets/image_1.jpg"; [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_file` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `input` [INFO] [stdout] --> src/main.rs:118:13 [INFO] [stdout] | [INFO] [stdout] 118 | let mut input = [0f32; 8]; [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_input` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `intermediate` [INFO] [stdout] --> src/main.rs:119:13 [INFO] [stdout] | [INFO] [stdout] 119 | let mut intermediate = [5f32; 8]; [INFO] [stdout] | ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_intermediate` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `output` [INFO] [stdout] --> src/main.rs:120:13 [INFO] [stdout] | [INFO] [stdout] 120 | let mut output = [0f32; 8]; [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_output` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `temp` [INFO] [stdout] --> src/main.rs:250:9 [INFO] [stdout] | [INFO] [stdout] 250 | let temp = get_zigzag(&block, &mut buffer); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_temp` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `previous_dc` [INFO] [stdout] --> src/main.rs:248:21 [INFO] [stdout] | [INFO] [stdout] 248 | fn entropy_encoding(previous_dc: i32, block: [[ i32; 8]; 8]) { [INFO] [stdout] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_previous_dc` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:90:9 [INFO] [stdout] | [INFO] [stdout] 90 | let mut y_prime:[[ f32; 8]; 8] = [ [INFO] [stdout] | ----^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:118:9 [INFO] [stdout] | [INFO] [stdout] 118 | let mut input = [0f32; 8]; [INFO] [stdout] | ----^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:119:9 [INFO] [stdout] | [INFO] [stdout] 119 | let mut intermediate = [5f32; 8]; [INFO] [stdout] | ----^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:120:9 [INFO] [stdout] | [INFO] [stdout] 120 | let mut output = [0f32; 8]; [INFO] [stdout] | ----^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant is never used: `Q_50_chroma` [INFO] [stdout] --> src/main.rs:22:1 [INFO] [stdout] | [INFO] [stdout] 22 | / const Q_50_chroma: [[ i32; 8]; 8] = [ [INFO] [stdout] 23 | | [17, 18, 24, 47, 99, 99, 99, 99], [INFO] [stdout] 24 | | [18, 21, 26, 66, 99, 99, 99, 99], [INFO] [stdout] 25 | | [24, 26, 56, 99, 99, 99, 99, 99], [INFO] [stdout] ... | [INFO] [stdout] 30 | | [99, 99, 99, 99, 99, 99, 99, 99] [INFO] [stdout] 31 | | ]; [INFO] [stdout] | |__^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum is never used: `SubsampleType` [INFO] [stdout] --> src/main.rs:52:6 [INFO] [stdout] | [INFO] [stdout] 52 | enum SubsampleType { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `get_row_divisor` [INFO] [stdout] --> src/main.rs:59:12 [INFO] [stdout] | [INFO] [stdout] 59 | pub fn get_row_divisor(&self) -> u8 { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 32 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `get_col_divisor` [INFO] [stdout] --> src/main.rs:67:12 [INFO] [stdout] | [INFO] [stdout] 67 | 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:152:4 [INFO] [stdout] | [INFO] [stdout] 152 | fn compress_jpeg_brute() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `rgb_2_ycrcb` [INFO] [stdout] --> src/main.rs:166:4 [INFO] [stdout] | [INFO] [stdout] 166 | 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:183:4 [INFO] [stdout] | [INFO] [stdout] 183 | 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:196:4 [INFO] [stdout] | [INFO] [stdout] 196 | fn down_sample() -> u32 { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `multiply` [INFO] [stdout] --> src/main.rs:200:4 [INFO] [stdout] | [INFO] [stdout] 200 | 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:208:4 [INFO] [stdout] | [INFO] [stdout] 208 | 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:216:4 [INFO] [stdout] | [INFO] [stdout] 216 | 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:224:4 [INFO] [stdout] | [INFO] [stdout] 224 | 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:234:4 [INFO] [stdout] | [INFO] [stdout] 234 | fn compress_jpeg_optimal() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `JPEGData` [INFO] [stdout] --> src/main.rs:237:8 [INFO] [stdout] | [INFO] [stdout] 237 | struct JPEGData { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `to_byte_pair` [INFO] [stdout] --> src/main.rs:244:12 [INFO] [stdout] | [INFO] [stdout] 244 | 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:248:4 [INFO] [stdout] | [INFO] [stdout] 248 | fn entropy_encoding(previous_dc: i32, block: [[ i32; 8]; 8]) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: this method call currently resolves to `<&[T; N] as IntoIterator>::into_iter` (due to autoref coercions), but that might change in the future when `IntoIterator` impls for arrays are added. [INFO] [stdout] --> src/main.rs:131:30 [INFO] [stdout] | [INFO] [stdout] 131 | for (i, elem) in y_prime.into_iter().enumerate() { [INFO] [stdout] | ^^^^^^^^^ help: use `.iter()` instead of `.into_iter()` to avoid ambiguity: `iter` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(array_into_iter)]` on by default [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stdout] = note: for more information, see issue #66145 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: this method call currently resolves to `<&[T; N] as IntoIterator>::into_iter` (due to autoref coercions), but that might change in the future when `IntoIterator` impls for arrays are added. [INFO] [stdout] --> src/main.rs:137:33 [INFO] [stdout] | [INFO] [stdout] 137 | for (i, elem) in transposed.into_iter().enumerate() { [INFO] [stdout] | ^^^^^^^^^ help: use `.iter()` instead of `.into_iter()` to avoid ambiguity: `iter` [INFO] [stdout] | [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stdout] = note: for more information, see issue #66145 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant `Q_50_luma` should have an upper case name [INFO] [stdout] --> src/main.rs:11:7 [INFO] [stdout] | [INFO] [stdout] 11 | 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:22:7 [INFO] [stdout] | [INFO] [stdout] 22 | 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: 32 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 24.93s [INFO] running `Command { std: "docker" "inspect" "930d51c78c5645dc6ca4ab3dd91a116585e31f170c579f1c1bb8200885e0ecc6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "930d51c78c5645dc6ca4ab3dd91a116585e31f170c579f1c1bb8200885e0ecc6", kill_on_drop: false }` [INFO] [stdout] 930d51c78c5645dc6ca4ab3dd91a116585e31f170c579f1c1bb8200885e0ecc6