[INFO] cloning repository https://github.com/uriGrif/jpeg-encoder
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/uriGrif/jpeg-encoder" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FuriGrif%2Fjpeg-encoder", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FuriGrif%2Fjpeg-encoder'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] af4078fcf5e0c3b7706fcd902e5f69a344ffb569
[INFO] checking uriGrif/jpeg-encoder against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FuriGrif%2Fjpeg-encoder" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/uriGrif/jpeg-encoder on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/uriGrif/jpeg-encoder
[INFO] finished tweaking git repo https://github.com/uriGrif/jpeg-encoder
[INFO] tweaked toml for git repo https://github.com/uriGrif/jpeg-encoder written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/uriGrif/jpeg-encoder already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bit-vec v0.8.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7f76b4de1925fe86a858b91d3b58f233a1c070ec2c75552afa8cea4588c0a5c5
[INFO] running `Command { std: "docker" "start" "-a" "7f76b4de1925fe86a858b91d3b58f233a1c070ec2c75552afa8cea4588c0a5c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7f76b4de1925fe86a858b91d3b58f233a1c070ec2c75552afa8cea4588c0a5c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f76b4de1925fe86a858b91d3b58f233a1c070ec2c75552afa8cea4588c0a5c5", kill_on_drop: false }`
[INFO] [stdout] 7f76b4de1925fe86a858b91d3b58f233a1c070ec2c75552afa8cea4588c0a5c5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "RUSTDOCFLAGS=--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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 49ae595977bc37fd951cb0f2d4c047c1f638f3b7f649e98a070f60437f23b129
[INFO] running `Command { std: "docker" "start" "-a" "49ae595977bc37fd951cb0f2d4c047c1f638f3b7f649e98a070f60437f23b129", kill_on_drop: false }`
[INFO] [stderr]    Compiling heck v0.5.0
[INFO] [stderr]     Checking strsim v0.11.0
[INFO] [stderr]     Checking bit-vec v0.8.0
[INFO] [stderr]    Compiling syn v2.0.52
[INFO] [stderr]     Checking clap_builder v4.5.2
[INFO] [stderr]    Compiling clap_derive v4.5.3
[INFO] [stderr]     Checking clap v4.5.3
[INFO] [stderr]     Checking jpeg-encoder v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/jpeg_image.rs:236:17
[INFO] [stdout]     |
[INFO] [stdout] 236 |             let mut x7_1 = x0 - x7;
[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/jpeg_image.rs:237:17
[INFO] [stdout]     |
[INFO] [stdout] 237 |             let mut x0_1 = x0 - (x7_1 >> 1);
[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/jpeg_image.rs:239:17
[INFO] [stdout]     |
[INFO] [stdout] 239 |             let mut x1_1 = x1 - (x6_1 >> 1);
[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/jpeg_image.rs:241:17
[INFO] [stdout]     |
[INFO] [stdout] 241 |             let mut x2_1 = x2 - (x5_1 >> 1);
[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/jpeg_image.rs:242:17
[INFO] [stdout]     |
[INFO] [stdout] 242 |             let mut x4_1 = x3 - x4;
[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/jpeg_image.rs:243:17
[INFO] [stdout]     |
[INFO] [stdout] 243 |             let mut x3_1 = x3 - (x4_1 >> 1);
[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/jpeg_image.rs:255:17
[INFO] [stdout]     |
[INFO] [stdout] 255 |             let mut x7_2 = x7_1 + x6_1;
[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/jpeg_image.rs:286:17
[INFO] [stdout]     |
[INFO] [stdout] 286 |             let mut x7_1 = x0 - x7;
[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/jpeg_image.rs:287:17
[INFO] [stdout]     |
[INFO] [stdout] 287 |             let mut x0_1 = x0 - (x7_1 >> 1);
[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/jpeg_image.rs:289:17
[INFO] [stdout]     |
[INFO] [stdout] 289 |             let mut x1_1 = x1 - (x6_1 >> 1);
[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/jpeg_image.rs:291:17
[INFO] [stdout]     |
[INFO] [stdout] 291 |             let mut x2_1 = x2 - (x5_1 >> 1);
[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/jpeg_image.rs:292:17
[INFO] [stdout]     |
[INFO] [stdout] 292 |             let mut x4_1 = x3 - x4;
[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/jpeg_image.rs:293:17
[INFO] [stdout]     |
[INFO] [stdout] 293 |             let mut x3_1 = x3 - (x4_1 >> 1);
[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/jpeg_image.rs:305:17
[INFO] [stdout]     |
[INFO] [stdout] 305 |             let mut x7_2 = x7_1 + x6_1;
[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/jpeg_image.rs:388:13
[INFO] [stdout]     |
[INFO] [stdout] 388 |         let mut bits: BitVec = BitVec::new();
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y_channel`
[INFO] [stdout]    --> src/jpeg_image.rs:398:9
[INFO] [stdout]     |
[INFO] [stdout] 398 |         y_channel: &Vec<i8>,
[INFO] [stdout]     |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_y_channel`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cb_channel`
[INFO] [stdout]    --> src/jpeg_image.rs:399:9
[INFO] [stdout]     |
[INFO] [stdout] 399 |         cb_channel: &Vec<i8>,
[INFO] [stdout]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_cb_channel`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cr_channel`
[INFO] [stdout]    --> src/jpeg_image.rs:400:9
[INFO] [stdout]     |
[INFO] [stdout] 400 |         cr_channel: &Vec<i8>,
[INFO] [stdout]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_cr_channel`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result_buffer`
[INFO] [stdout]    --> src/jpeg_image.rs:401:9
[INFO] [stdout]     |
[INFO] [stdout] 401 |         result_buffer: &Vec<i8>
[INFO] [stdout]     |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_result_buffer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `runlength`
[INFO] [stdout]    --> src/jpeg_image.rs:404:23
[INFO] [stdout]     |
[INFO] [stdout] 404 |     fn huffman_encode(runlength: &Vec<i8>, bits: &mut BitVec) {
[INFO] [stdout]     |                       ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_runlength`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bits`
[INFO] [stdout]    --> src/jpeg_image.rs:404:44
[INFO] [stdout]     |
[INFO] [stdout] 404 |     fn huffman_encode(runlength: &Vec<i8>, bits: &mut BitVec) {
[INFO] [stdout]     |                                            ^^^^ help: if this is intentional, prefix it with an underscore: `_bits`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `RealDct` is never constructed
[INFO] [stdout]   --> src/jpeg_image.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub enum DctAlgorithm {
[INFO] [stdout]    |          ------------ variant in this enum
[INFO] [stdout] 14 |     RealDct,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `path` and `file` are never read
[INFO] [stdout]   --> src/jpeg_image.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub struct JpegImage {
[INFO] [stdout]    |            --------- fields in this struct
[INFO] [stdout] 19 |     path: Option<String>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 20 |     file: Option<File>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `quantization`, `get_encoded_data`, `runlength_encode`, `huffman_encode`, and `get_huffman_codes` are never used
[INFO] [stdout]    --> src/jpeg_image.rs:377:8
[INFO] [stdout]     |
[INFO] [stdout] 33  | impl JpegImage {
[INFO] [stdout]     | -------------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 377 |     fn quantization(
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 387 |     fn get_encoded_data(&self) -> BitVec {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 397 |     fn runlength_encode(
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 404 |     fn huffman_encode(runlength: &Vec<i8>, bits: &mut BitVec) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 408 |     fn get_huffman_codes(table: &mut HuffmanTable) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ZIG_ZAG_MAP` is never used
[INFO] [stdout]   --> src/quant_tables.rs:13:11
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub const ZIG_ZAG_MAP: [usize; 64] = [
[INFO] [stdout]    |           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `HuffmanTable` is never constructed
[INFO] [stdout]  --> src/huffman_tables.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct HuffmanTable<'a> {
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `Y_DC_HUFFMAN_TABLE` is never used
[INFO] [stdout]  --> src/huffman_tables.rs:8:16
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub static mut Y_DC_HUFFMAN_TABLE: HuffmanTable = HuffmanTable {
[INFO] [stdout]   |                ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `CH_DC_HUFFMAN_TABLE` is never used
[INFO] [stdout]   --> src/huffman_tables.rs:15:16
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub static mut CH_DC_HUFFMAN_TABLE: HuffmanTable = HuffmanTable {
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `Y_AC_HUFFMAN_TABLE` is never used
[INFO] [stdout]   --> src/huffman_tables.rs:22:16
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub static mut Y_AC_HUFFMAN_TABLE: HuffmanTable = HuffmanTable {
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `CH_AC_HUFFMAN_TABLE` is never used
[INFO] [stdout]   --> src/huffman_tables.rs:41:16
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub static mut CH_AC_HUFFMAN_TABLE: HuffmanTable = HuffmanTable {
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `path` is never read
[INFO] [stdout]   --> src/bmp_image.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct BmpImage {
[INFO] [stdout]    |            -------- field in this struct
[INFO] [stdout] 13 |     file: Option<File>,
[INFO] [stdout] 14 |     path: Option<String>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `pixel_amount` is never used
[INFO] [stdout]   --> src/bmp_image.rs:84:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl BmpImage {
[INFO] [stdout]    | ------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 84 |     pub fn pixel_amount(&self) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 32 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/jpeg_image.rs:236:17
[INFO] [stdout]     |
[INFO] [stdout] 236 |             let mut x7_1 = x0 - x7;
[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/jpeg_image.rs:237:17
[INFO] [stdout]     |
[INFO] [stdout] 237 |             let mut x0_1 = x0 - (x7_1 >> 1);
[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/jpeg_image.rs:239:17
[INFO] [stdout]     |
[INFO] [stdout] 239 |             let mut x1_1 = x1 - (x6_1 >> 1);
[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/jpeg_image.rs:241:17
[INFO] [stdout]     |
[INFO] [stdout] 241 |             let mut x2_1 = x2 - (x5_1 >> 1);
[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/jpeg_image.rs:242:17
[INFO] [stdout]     |
[INFO] [stdout] 242 |             let mut x4_1 = x3 - x4;
[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/jpeg_image.rs:243:17
[INFO] [stdout]     |
[INFO] [stdout] 243 |             let mut x3_1 = x3 - (x4_1 >> 1);
[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/jpeg_image.rs:255:17
[INFO] [stdout]     |
[INFO] [stdout] 255 |             let mut x7_2 = x7_1 + x6_1;
[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/jpeg_image.rs:286:17
[INFO] [stdout]     |
[INFO] [stdout] 286 |             let mut x7_1 = x0 - x7;
[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/jpeg_image.rs:287:17
[INFO] [stdout]     |
[INFO] [stdout] 287 |             let mut x0_1 = x0 - (x7_1 >> 1);
[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/jpeg_image.rs:289:17
[INFO] [stdout]     |
[INFO] [stdout] 289 |             let mut x1_1 = x1 - (x6_1 >> 1);
[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/jpeg_image.rs:291:17
[INFO] [stdout]     |
[INFO] [stdout] 291 |             let mut x2_1 = x2 - (x5_1 >> 1);
[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/jpeg_image.rs:292:17
[INFO] [stdout]     |
[INFO] [stdout] 292 |             let mut x4_1 = x3 - x4;
[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/jpeg_image.rs:293:17
[INFO] [stdout]     |
[INFO] [stdout] 293 |             let mut x3_1 = x3 - (x4_1 >> 1);
[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/jpeg_image.rs:305:17
[INFO] [stdout]     |
[INFO] [stdout] 305 |             let mut x7_2 = x7_1 + x6_1;
[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/jpeg_image.rs:388:13
[INFO] [stdout]     |
[INFO] [stdout] 388 |         let mut bits: BitVec = BitVec::new();
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y_channel`
[INFO] [stdout]    --> src/jpeg_image.rs:398:9
[INFO] [stdout]     |
[INFO] [stdout] 398 |         y_channel: &Vec<i8>,
[INFO] [stdout]     |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_y_channel`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cb_channel`
[INFO] [stdout]    --> src/jpeg_image.rs:399:9
[INFO] [stdout]     |
[INFO] [stdout] 399 |         cb_channel: &Vec<i8>,
[INFO] [stdout]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_cb_channel`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cr_channel`
[INFO] [stdout]    --> src/jpeg_image.rs:400:9
[INFO] [stdout]     |
[INFO] [stdout] 400 |         cr_channel: &Vec<i8>,
[INFO] [stdout]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_cr_channel`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result_buffer`
[INFO] [stdout]    --> src/jpeg_image.rs:401:9
[INFO] [stdout]     |
[INFO] [stdout] 401 |         result_buffer: &Vec<i8>
[INFO] [stdout]     |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_result_buffer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `runlength`
[INFO] [stdout]    --> src/jpeg_image.rs:404:23
[INFO] [stdout]     |
[INFO] [stdout] 404 |     fn huffman_encode(runlength: &Vec<i8>, bits: &mut BitVec) {
[INFO] [stdout]     |                       ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_runlength`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bits`
[INFO] [stdout]    --> src/jpeg_image.rs:404:44
[INFO] [stdout]     |
[INFO] [stdout] 404 |     fn huffman_encode(runlength: &Vec<i8>, bits: &mut BitVec) {
[INFO] [stdout]     |                                            ^^^^ help: if this is intentional, prefix it with an underscore: `_bits`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `RealDct` is never constructed
[INFO] [stdout]   --> src/jpeg_image.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub enum DctAlgorithm {
[INFO] [stdout]    |          ------------ variant in this enum
[INFO] [stdout] 14 |     RealDct,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `path` and `file` are never read
[INFO] [stdout]   --> src/jpeg_image.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub struct JpegImage {
[INFO] [stdout]    |            --------- fields in this struct
[INFO] [stdout] 19 |     path: Option<String>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 20 |     file: Option<File>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `quantization`, `get_encoded_data`, `runlength_encode`, `huffman_encode`, and `get_huffman_codes` are never used
[INFO] [stdout]    --> src/jpeg_image.rs:377:8
[INFO] [stdout]     |
[INFO] [stdout] 33  | impl JpegImage {
[INFO] [stdout]     | -------------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 377 |     fn quantization(
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 387 |     fn get_encoded_data(&self) -> BitVec {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 397 |     fn runlength_encode(
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 404 |     fn huffman_encode(runlength: &Vec<i8>, bits: &mut BitVec) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 408 |     fn get_huffman_codes(table: &mut HuffmanTable) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ZIG_ZAG_MAP` is never used
[INFO] [stdout]   --> src/quant_tables.rs:13:11
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub const ZIG_ZAG_MAP: [usize; 64] = [
[INFO] [stdout]    |           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `HuffmanTable` is never constructed
[INFO] [stdout]  --> src/huffman_tables.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct HuffmanTable<'a> {
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `Y_DC_HUFFMAN_TABLE` is never used
[INFO] [stdout]  --> src/huffman_tables.rs:8:16
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub static mut Y_DC_HUFFMAN_TABLE: HuffmanTable = HuffmanTable {
[INFO] [stdout]   |                ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `CH_DC_HUFFMAN_TABLE` is never used
[INFO] [stdout]   --> src/huffman_tables.rs:15:16
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub static mut CH_DC_HUFFMAN_TABLE: HuffmanTable = HuffmanTable {
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `Y_AC_HUFFMAN_TABLE` is never used
[INFO] [stdout]   --> src/huffman_tables.rs:22:16
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub static mut Y_AC_HUFFMAN_TABLE: HuffmanTable = HuffmanTable {
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `CH_AC_HUFFMAN_TABLE` is never used
[INFO] [stdout]   --> src/huffman_tables.rs:41:16
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub static mut CH_AC_HUFFMAN_TABLE: HuffmanTable = HuffmanTable {
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `path` is never read
[INFO] [stdout]   --> src/bmp_image.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct BmpImage {
[INFO] [stdout]    |            -------- field in this struct
[INFO] [stdout] 13 |     file: Option<File>,
[INFO] [stdout] 14 |     path: Option<String>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `pixel_amount` is never used
[INFO] [stdout]   --> src/bmp_image.rs:84:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl BmpImage {
[INFO] [stdout]    | ------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 84 |     pub fn pixel_amount(&self) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 32 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.86s
[INFO] running `Command { std: "docker" "inspect" "49ae595977bc37fd951cb0f2d4c047c1f638f3b7f649e98a070f60437f23b129", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49ae595977bc37fd951cb0f2d4c047c1f638f3b7f649e98a070f60437f23b129", kill_on_drop: false }`
[INFO] [stdout] 49ae595977bc37fd951cb0f2d4c047c1f638f3b7f649e98a070f60437f23b129