[INFO] fetching crate embedded-png 0.1.1...
[INFO] testing embedded-png-0.1.1 against 1.99.0-beta.8+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate embedded-png 0.1.1 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate embedded-png 0.1.1
[INFO] finished tweaking crates.io crate embedded-png 0.1.1
[INFO] tweaked toml for crates.io crate embedded-png 0.1.1 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate embedded-png 0.1.1 on toolchain 1.99.0-beta.8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate embedded-png 0.1.1 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" "+1.99.0-beta.8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded num_enum v0.7.4
[INFO] [stderr]   Downloaded num_enum_derive v0.7.4
[INFO] [stderr]   Downloaded embedded-graphics-core v0.4.0
[INFO] [stderr]   Downloaded png-decoder v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 1404df1364a4f6e3d2a984a6c4837d690b271c8fdea234f95c4124a03b9f0533
[INFO] running `Command { std: "docker" "start" "1404df1364a4f6e3d2a984a6c4837d690b271c8fdea234f95c4124a03b9f0533", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1404df1364a4f6e3d2a984a6c4837d690b271c8fdea234f95c4124a03b9f0533", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "1404df1364a4f6e3d2a984a6c4837d690b271c8fdea234f95c4124a03b9f0533" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1404df1364a4f6e3d2a984a6c4837d690b271c8fdea234f95c4124a03b9f0533", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "1404df1364a4f6e3d2a984a6c4837d690b271c8fdea234f95c4124a03b9f0533" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling az v1.2.1
[INFO] [stderr]    Compiling crc32fast v1.5.0
[INFO] [stderr]    Compiling cfg-if v1.0.3
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling miniz_oxide v0.9.1
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling embedded-graphics-core v0.4.0
[INFO] [stderr]    Compiling num_enum_derive v0.7.4
[INFO] [stderr]    Compiling num_enum v0.7.4
[INFO] [stderr]    Compiling embedded-png v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/colors.rs:365:46
[INFO] [stdout]     |
[INFO] [stdout] 365 |             PixelType::Grayscale1Transparent(t) => {
[INFO] [stdout]     |                                              ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bit`
[INFO] [stdout]    --> src/colors.rs:366:21
[INFO] [stdout]     |
[INFO] [stdout] 366 |                 let bit = self.bits::<1>();
[INFO] [stdout]     |                     ^^^ help: if this is intentional, prefix it with an underscore: `_bit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/colors.rs:369:46
[INFO] [stdout]     |
[INFO] [stdout] 369 |             PixelType::Grayscale2Transparent(t) => {
[INFO] [stdout]     |                                              ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bits`
[INFO] [stdout]    --> src/colors.rs:370:21
[INFO] [stdout]     |
[INFO] [stdout] 370 |                 let bits = self.bits::<2>();
[INFO] [stdout]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_bits`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/colors.rs:373:46
[INFO] [stdout]     |
[INFO] [stdout] 373 |             PixelType::Grayscale4Transparent(t) => {
[INFO] [stdout]     |                                              ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bits`
[INFO] [stdout]    --> src/colors.rs:374:21
[INFO] [stdout]     |
[INFO] [stdout] 374 |                 let bits = self.bits::<2>();
[INFO] [stdout]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_bits`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/colors.rs:377:46
[INFO] [stdout]     |
[INFO] [stdout] 377 |             PixelType::Grayscale8Transparent(t) => {
[INFO] [stdout]     |                                              ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `byte`
[INFO] [stdout]    --> src/colors.rs:378:21
[INFO] [stdout]     |
[INFO] [stdout] 378 |                 let byte = self.bytes::<1>();
[INFO] [stdout]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_byte`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/colors.rs:381:47
[INFO] [stdout]     |
[INFO] [stdout] 381 |             PixelType::Grayscale16Transparent(t) => {
[INFO] [stdout]     |                                               ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `byte`
[INFO] [stdout]    --> src/colors.rs:382:21
[INFO] [stdout]     |
[INFO] [stdout] 382 |                 let byte = self.words::<1>();
[INFO] [stdout]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_byte`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `palette`
[INFO] [stdout]    --> src/colors.rs:385:44
[INFO] [stdout]     |
[INFO] [stdout] 385 |             PixelType::Palette1Transparent(palette, p) => {
[INFO] [stdout]     |                                            ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_palette`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p`
[INFO] [stdout]    --> src/colors.rs:385:53
[INFO] [stdout]     |
[INFO] [stdout] 385 |             PixelType::Palette1Transparent(palette, p) => {
[INFO] [stdout]     |                                                     ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bit`
[INFO] [stdout]    --> src/colors.rs:386:21
[INFO] [stdout]     |
[INFO] [stdout] 386 |                 let bit = self.bits::<1>();
[INFO] [stdout]     |                     ^^^ help: if this is intentional, prefix it with an underscore: `_bit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `palette`
[INFO] [stdout]    --> src/colors.rs:389:44
[INFO] [stdout]     |
[INFO] [stdout] 389 |             PixelType::Palette2Transparent(palette, p) => {
[INFO] [stdout]     |                                            ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_palette`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p`
[INFO] [stdout]    --> src/colors.rs:389:53
[INFO] [stdout]     |
[INFO] [stdout] 389 |             PixelType::Palette2Transparent(palette, p) => {
[INFO] [stdout]     |                                                     ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bits`
[INFO] [stdout]    --> src/colors.rs:390:21
[INFO] [stdout]     |
[INFO] [stdout] 390 |                 let bits = self.bits::<2>();
[INFO] [stdout]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_bits`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `palette`
[INFO] [stdout]    --> src/colors.rs:393:44
[INFO] [stdout]     |
[INFO] [stdout] 393 |             PixelType::Palette4Transparent(palette, p) => {
[INFO] [stdout]     |                                            ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_palette`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p`
[INFO] [stdout]    --> src/colors.rs:393:53
[INFO] [stdout]     |
[INFO] [stdout] 393 |             PixelType::Palette4Transparent(palette, p) => {
[INFO] [stdout]     |                                                     ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bits`
[INFO] [stdout]    --> src/colors.rs:394:21
[INFO] [stdout]     |
[INFO] [stdout] 394 |                 let bits = self.bits::<4>();
[INFO] [stdout]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_bits`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `palette`
[INFO] [stdout]    --> src/colors.rs:397:44
[INFO] [stdout]     |
[INFO] [stdout] 397 |             PixelType::Palette8Transparent(palette, p) => {
[INFO] [stdout]     |                                            ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_palette`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p`
[INFO] [stdout]    --> src/colors.rs:397:53
[INFO] [stdout]     |
[INFO] [stdout] 397 |             PixelType::Palette8Transparent(palette, p) => {
[INFO] [stdout]     |                                                     ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `byte`
[INFO] [stdout]    --> src/colors.rs:398:21
[INFO] [stdout]     |
[INFO] [stdout] 398 |                 let byte = self.bytes::<1>();
[INFO] [stdout]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_byte`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/colors.rs:401:40
[INFO] [stdout]     |
[INFO] [stdout] 401 |             PixelType::Rgb8Transparent(t) => {
[INFO] [stdout]     |                                        ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bytes`
[INFO] [stdout]    --> src/colors.rs:402:21
[INFO] [stdout]     |
[INFO] [stdout] 402 |                 let bytes = self.bytes::<3>();
[INFO] [stdout]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/colors.rs:406:41
[INFO] [stdout]     |
[INFO] [stdout] 406 |             PixelType::Rgb16Transparent(t) => {
[INFO] [stdout]     |                                         ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bytes`
[INFO] [stdout]    --> src/colors.rs:407:21
[INFO] [stdout]     |
[INFO] [stdout] 407 |                 let bytes = self.words::<3>();
[INFO] [stdout]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bytes`
[INFO] [stdout]    --> src/colors.rs:412:21
[INFO] [stdout]     |
[INFO] [stdout] 412 |                 let bytes = self.bytes::<2>();
[INFO] [stdout]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bytes`
[INFO] [stdout]    --> src/colors.rs:416:21
[INFO] [stdout]     |
[INFO] [stdout] 416 |                 let bytes = self.words::<2>();
[INFO] [stdout]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bytes`
[INFO] [stdout]    --> src/colors.rs:420:21
[INFO] [stdout]     |
[INFO] [stdout] 420 |                 let bytes = self.bytes::<4>();
[INFO] [stdout]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bytes`
[INFO] [stdout]    --> src/colors.rs:425:21
[INFO] [stdout]     |
[INFO] [stdout] 425 |                 let bytes = self.words::<4>();
[INFO] [stdout]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `alpha`
[INFO] [stdout]    --> src/colors.rs:499:14
[INFO] [stdout]     |
[INFO] [stdout] 499 |         let (alpha, color) = self.next_keep_alpha();
[INFO] [stdout]     |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_alpha`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `color`
[INFO] [stdout]    --> src/colors.rs:499:21
[INFO] [stdout]     |
[INFO] [stdout] 499 |         let (alpha, color) = self.next_keep_alpha();
[INFO] [stdout]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_color`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `palette` and `handler` are never read
[INFO] [stdout]   --> src/colors.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub struct PixelsIterator<'a, Color, Handler> {
[INFO] [stdout]    |            -------------- fields in this struct
[INFO] [stdout] 43 |     pixel_type: PixelType<'a>,
[INFO] [stdout] 44 |     palette: Option<&'a [u8]>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 |     handler: Handler,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `total_scanline_bytes` is never used
[INFO] [stdout]    --> src/png.rs:418:8
[INFO] [stdout]     |
[INFO] [stdout] 330 | impl PngHeader {
[INFO] [stdout]     | -------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 418 |     fn total_scanline_bytes(&self) -> Result<usize, DecodeError> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 6.11s
[INFO] running `Command { std: "docker" "inspect" "1404df1364a4f6e3d2a984a6c4837d690b271c8fdea234f95c4124a03b9f0533", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "1404df1364a4f6e3d2a984a6c4837d690b271c8fdea234f95c4124a03b9f0533" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "test" "--frozen" "--no-run" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling adler v1.0.2
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/colors.rs:365:46
[INFO] [stdout]     |
[INFO] [stdout] 365 |             PixelType::Grayscale1Transparent(t) => {
[INFO] [stdout]     |                                              ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bit`
[INFO] [stdout]    --> src/colors.rs:366:21
[INFO] [stdout]     |
[INFO] [stdout] 366 |                 let bit = self.bits::<1>();
[INFO] [stdout]     |                     ^^^ help: if this is intentional, prefix it with an underscore: `_bit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/colors.rs:369:46
[INFO] [stdout]     |
[INFO] [stdout] 369 |             PixelType::Grayscale2Transparent(t) => {
[INFO] [stdout]     |                                              ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bits`
[INFO] [stdout]    --> src/colors.rs:370:21
[INFO] [stdout]     |
[INFO] [stdout] 370 |                 let bits = self.bits::<2>();
[INFO] [stdout]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_bits`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/colors.rs:373:46
[INFO] [stdout]     |
[INFO] [stdout] 373 |             PixelType::Grayscale4Transparent(t) => {
[INFO] [stdout]     |                                              ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bits`
[INFO] [stdout]    --> src/colors.rs:374:21
[INFO] [stdout]     |
[INFO] [stdout] 374 |                 let bits = self.bits::<2>();
[INFO] [stdout]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_bits`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/colors.rs:377:46
[INFO] [stdout]     |
[INFO] [stdout] 377 |             PixelType::Grayscale8Transparent(t) => {
[INFO] [stdout]     |                                              ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `byte`
[INFO] [stdout]    --> src/colors.rs:378:21
[INFO] [stdout]     |
[INFO] [stdout] 378 |                 let byte = self.bytes::<1>();
[INFO] [stdout]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_byte`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/colors.rs:381:47
[INFO] [stdout]     |
[INFO] [stdout] 381 |             PixelType::Grayscale16Transparent(t) => {
[INFO] [stdout]     |                                               ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `byte`
[INFO] [stdout]    --> src/colors.rs:382:21
[INFO] [stdout]     |
[INFO] [stdout] 382 |                 let byte = self.words::<1>();
[INFO] [stdout]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_byte`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `palette`
[INFO] [stdout]    --> src/colors.rs:385:44
[INFO] [stdout]     |
[INFO] [stdout] 385 |             PixelType::Palette1Transparent(palette, p) => {
[INFO] [stdout]     |                                            ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_palette`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p`
[INFO] [stdout]    --> src/colors.rs:385:53
[INFO] [stdout]     |
[INFO] [stdout] 385 |             PixelType::Palette1Transparent(palette, p) => {
[INFO] [stdout]     |                                                     ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bit`
[INFO] [stdout]    --> src/colors.rs:386:21
[INFO] [stdout]     |
[INFO] [stdout] 386 |                 let bit = self.bits::<1>();
[INFO] [stdout]     |                     ^^^ help: if this is intentional, prefix it with an underscore: `_bit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `palette`
[INFO] [stdout]    --> src/colors.rs:389:44
[INFO] [stdout]     |
[INFO] [stdout] 389 |             PixelType::Palette2Transparent(palette, p) => {
[INFO] [stdout]     |                                            ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_palette`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p`
[INFO] [stdout]    --> src/colors.rs:389:53
[INFO] [stdout]     |
[INFO] [stdout] 389 |             PixelType::Palette2Transparent(palette, p) => {
[INFO] [stdout]     |                                                     ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bits`
[INFO] [stdout]    --> src/colors.rs:390:21
[INFO] [stdout]     |
[INFO] [stdout] 390 |                 let bits = self.bits::<2>();
[INFO] [stdout]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_bits`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `palette`
[INFO] [stdout]    --> src/colors.rs:393:44
[INFO] [stdout]     |
[INFO] [stdout] 393 |             PixelType::Palette4Transparent(palette, p) => {
[INFO] [stdout]     |                                            ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_palette`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p`
[INFO] [stdout]    --> src/colors.rs:393:53
[INFO] [stdout]     |
[INFO] [stdout] 393 |             PixelType::Palette4Transparent(palette, p) => {
[INFO] [stdout]     |                                                     ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bits`
[INFO] [stdout]    --> src/colors.rs:394:21
[INFO] [stdout]     |
[INFO] [stdout] 394 |                 let bits = self.bits::<4>();
[INFO] [stdout]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_bits`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `palette`
[INFO] [stdout]    --> src/colors.rs:397:44
[INFO] [stdout]     |
[INFO] [stdout] 397 |             PixelType::Palette8Transparent(palette, p) => {
[INFO] [stdout]     |                                            ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_palette`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p`
[INFO] [stdout]    --> src/colors.rs:397:53
[INFO] [stdout]     |
[INFO] [stdout] 397 |             PixelType::Palette8Transparent(palette, p) => {
[INFO] [stdout]     |                                                     ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `byte`
[INFO] [stdout]    --> src/colors.rs:398:21
[INFO] [stdout]     |
[INFO] [stdout] 398 |                 let byte = self.bytes::<1>();
[INFO] [stdout]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_byte`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/colors.rs:401:40
[INFO] [stdout]     |
[INFO] [stdout] 401 |             PixelType::Rgb8Transparent(t) => {
[INFO] [stdout]     |                                        ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bytes`
[INFO] [stdout]    --> src/colors.rs:402:21
[INFO] [stdout]     |
[INFO] [stdout] 402 |                 let bytes = self.bytes::<3>();
[INFO] [stdout]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/colors.rs:406:41
[INFO] [stdout]     |
[INFO] [stdout] 406 |             PixelType::Rgb16Transparent(t) => {
[INFO] [stdout]     |                                         ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bytes`
[INFO] [stdout]    --> src/colors.rs:407:21
[INFO] [stdout]     |
[INFO] [stdout] 407 |                 let bytes = self.words::<3>();
[INFO] [stdout]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bytes`
[INFO] [stdout]    --> src/colors.rs:412:21
[INFO] [stdout]     |
[INFO] [stdout] 412 |                 let bytes = self.bytes::<2>();
[INFO] [stdout]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bytes`
[INFO] [stdout]    --> src/colors.rs:416:21
[INFO] [stdout]     |
[INFO] [stdout] 416 |                 let bytes = self.words::<2>();
[INFO] [stdout]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bytes`
[INFO] [stdout]    --> src/colors.rs:420:21
[INFO] [stdout]     |
[INFO] [stdout] 420 |                 let bytes = self.bytes::<4>();
[INFO] [stdout]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bytes`
[INFO] [stdout]    --> src/colors.rs:425:21
[INFO] [stdout]     |
[INFO] [stdout] 425 |                 let bytes = self.words::<4>();
[INFO] [stdout]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `alpha`
[INFO] [stdout]    --> src/colors.rs:499:14
[INFO] [stdout]     |
[INFO] [stdout] 499 |         let (alpha, color) = self.next_keep_alpha();
[INFO] [stdout]     |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_alpha`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `color`
[INFO] [stdout]    --> src/colors.rs:499:21
[INFO] [stdout]     |
[INFO] [stdout] 499 |         let (alpha, color) = self.next_keep_alpha();
[INFO] [stdout]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_color`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `palette` and `handler` are never read
[INFO] [stdout]   --> src/colors.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub struct PixelsIterator<'a, Color, Handler> {
[INFO] [stdout]    |            -------------- fields in this struct
[INFO] [stdout] 43 |     pixel_type: PixelType<'a>,
[INFO] [stdout] 44 |     palette: Option<&'a [u8]>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 |     handler: Handler,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `total_scanline_bytes` is never used
[INFO] [stdout]    --> src/png.rs:418:8
[INFO] [stdout]     |
[INFO] [stdout] 330 | impl PngHeader {
[INFO] [stdout]     | -------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 418 |     fn total_scanline_bytes(&self) -> Result<usize, DecodeError> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling num_enum_derive v0.5.11
[INFO] [stderr]    Compiling num_enum v0.5.11
[INFO] [stderr]    Compiling png-decoder v0.1.1
[INFO] [stderr]    Compiling embedded-png v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]   --> src/lib.rs:89:9
[INFO] [stdout]    |
[INFO] [stdout] 89 |     use super::*;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/colors.rs:365:46
[INFO] [stdout]     |
[INFO] [stdout] 365 |             PixelType::Grayscale1Transparent(t) => {
[INFO] [stdout]     |                                              ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bit`
[INFO] [stdout]    --> src/colors.rs:366:21
[INFO] [stdout]     |
[INFO] [stdout] 366 |                 let bit = self.bits::<1>();
[INFO] [stdout]     |                     ^^^ help: if this is intentional, prefix it with an underscore: `_bit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/colors.rs:369:46
[INFO] [stdout]     |
[INFO] [stdout] 369 |             PixelType::Grayscale2Transparent(t) => {
[INFO] [stdout]     |                                              ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bits`
[INFO] [stdout]    --> src/colors.rs:370:21
[INFO] [stdout]     |
[INFO] [stdout] 370 |                 let bits = self.bits::<2>();
[INFO] [stdout]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_bits`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/colors.rs:373:46
[INFO] [stdout]     |
[INFO] [stdout] 373 |             PixelType::Grayscale4Transparent(t) => {
[INFO] [stdout]     |                                              ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bits`
[INFO] [stdout]    --> src/colors.rs:374:21
[INFO] [stdout]     |
[INFO] [stdout] 374 |                 let bits = self.bits::<2>();
[INFO] [stdout]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_bits`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/colors.rs:377:46
[INFO] [stdout]     |
[INFO] [stdout] 377 |             PixelType::Grayscale8Transparent(t) => {
[INFO] [stdout]     |                                              ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `byte`
[INFO] [stdout]    --> src/colors.rs:378:21
[INFO] [stdout]     |
[INFO] [stdout] 378 |                 let byte = self.bytes::<1>();
[INFO] [stdout]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_byte`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/colors.rs:381:47
[INFO] [stdout]     |
[INFO] [stdout] 381 |             PixelType::Grayscale16Transparent(t) => {
[INFO] [stdout]     |                                               ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `byte`
[INFO] [stdout]    --> src/colors.rs:382:21
[INFO] [stdout]     |
[INFO] [stdout] 382 |                 let byte = self.words::<1>();
[INFO] [stdout]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_byte`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `palette`
[INFO] [stdout]    --> src/colors.rs:385:44
[INFO] [stdout]     |
[INFO] [stdout] 385 |             PixelType::Palette1Transparent(palette, p) => {
[INFO] [stdout]     |                                            ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_palette`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p`
[INFO] [stdout]    --> src/colors.rs:385:53
[INFO] [stdout]     |
[INFO] [stdout] 385 |             PixelType::Palette1Transparent(palette, p) => {
[INFO] [stdout]     |                                                     ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bit`
[INFO] [stdout]    --> src/colors.rs:386:21
[INFO] [stdout]     |
[INFO] [stdout] 386 |                 let bit = self.bits::<1>();
[INFO] [stdout]     |                     ^^^ help: if this is intentional, prefix it with an underscore: `_bit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `palette`
[INFO] [stdout]    --> src/colors.rs:389:44
[INFO] [stdout]     |
[INFO] [stdout] 389 |             PixelType::Palette2Transparent(palette, p) => {
[INFO] [stdout]     |                                            ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_palette`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p`
[INFO] [stdout]    --> src/colors.rs:389:53
[INFO] [stdout]     |
[INFO] [stdout] 389 |             PixelType::Palette2Transparent(palette, p) => {
[INFO] [stdout]     |                                                     ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bits`
[INFO] [stdout]    --> src/colors.rs:390:21
[INFO] [stdout]     |
[INFO] [stdout] 390 |                 let bits = self.bits::<2>();
[INFO] [stdout]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_bits`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `palette`
[INFO] [stdout]    --> src/colors.rs:393:44
[INFO] [stdout]     |
[INFO] [stdout] 393 |             PixelType::Palette4Transparent(palette, p) => {
[INFO] [stdout]     |                                            ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_palette`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p`
[INFO] [stdout]    --> src/colors.rs:393:53
[INFO] [stdout]     |
[INFO] [stdout] 393 |             PixelType::Palette4Transparent(palette, p) => {
[INFO] [stdout]     |                                                     ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bits`
[INFO] [stdout]    --> src/colors.rs:394:21
[INFO] [stdout]     |
[INFO] [stdout] 394 |                 let bits = self.bits::<4>();
[INFO] [stdout]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_bits`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `palette`
[INFO] [stdout]    --> src/colors.rs:397:44
[INFO] [stdout]     |
[INFO] [stdout] 397 |             PixelType::Palette8Transparent(palette, p) => {
[INFO] [stdout]     |                                            ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_palette`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p`
[INFO] [stdout]    --> src/colors.rs:397:53
[INFO] [stdout]     |
[INFO] [stdout] 397 |             PixelType::Palette8Transparent(palette, p) => {
[INFO] [stdout]     |                                                     ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `byte`
[INFO] [stdout]    --> src/colors.rs:398:21
[INFO] [stdout]     |
[INFO] [stdout] 398 |                 let byte = self.bytes::<1>();
[INFO] [stdout]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_byte`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/colors.rs:401:40
[INFO] [stdout]     |
[INFO] [stdout] 401 |             PixelType::Rgb8Transparent(t) => {
[INFO] [stdout]     |                                        ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bytes`
[INFO] [stdout]    --> src/colors.rs:402:21
[INFO] [stdout]     |
[INFO] [stdout] 402 |                 let bytes = self.bytes::<3>();
[INFO] [stdout]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/colors.rs:406:41
[INFO] [stdout]     |
[INFO] [stdout] 406 |             PixelType::Rgb16Transparent(t) => {
[INFO] [stdout]     |                                         ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bytes`
[INFO] [stdout]    --> src/colors.rs:407:21
[INFO] [stdout]     |
[INFO] [stdout] 407 |                 let bytes = self.words::<3>();
[INFO] [stdout]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bytes`
[INFO] [stdout]    --> src/colors.rs:412:21
[INFO] [stdout]     |
[INFO] [stdout] 412 |                 let bytes = self.bytes::<2>();
[INFO] [stdout]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bytes`
[INFO] [stdout]    --> src/colors.rs:416:21
[INFO] [stdout]     |
[INFO] [stdout] 416 |                 let bytes = self.words::<2>();
[INFO] [stdout]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bytes`
[INFO] [stdout]    --> src/colors.rs:420:21
[INFO] [stdout]     |
[INFO] [stdout] 420 |                 let bytes = self.bytes::<4>();
[INFO] [stdout]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bytes`
[INFO] [stdout]    --> src/colors.rs:425:21
[INFO] [stdout]     |
[INFO] [stdout] 425 |                 let bytes = self.words::<4>();
[INFO] [stdout]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `alpha`
[INFO] [stdout]    --> src/colors.rs:499:14
[INFO] [stdout]     |
[INFO] [stdout] 499 |         let (alpha, color) = self.next_keep_alpha();
[INFO] [stdout]     |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_alpha`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `color`
[INFO] [stdout]    --> src/colors.rs:499:21
[INFO] [stdout]     |
[INFO] [stdout] 499 |         let (alpha, color) = self.next_keep_alpha();
[INFO] [stdout]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_color`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `palette` and `handler` are never read
[INFO] [stdout]   --> src/colors.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub struct PixelsIterator<'a, Color, Handler> {
[INFO] [stdout]    |            -------------- fields in this struct
[INFO] [stdout] 43 |     pixel_type: PixelType<'a>,
[INFO] [stdout] 44 |     palette: Option<&'a [u8]>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 |     handler: Handler,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `total_scanline_bytes` is never used
[INFO] [stdout]    --> src/png.rs:418:8
[INFO] [stdout]     |
[INFO] [stdout] 330 | impl PngHeader {
[INFO] [stdout]     | -------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 418 |     fn total_scanline_bytes(&self) -> Result<usize, DecodeError> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 4.93s
[INFO] running `Command { std: "docker" "inspect" "1404df1364a4f6e3d2a984a6c4837d690b271c8fdea234f95c4124a03b9f0533", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "1404df1364a4f6e3d2a984a6c4837d690b271c8fdea234f95c4124a03b9f0533" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "test" "--frozen" "--release", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]    --> src/colors.rs:365:46
[INFO] [stderr]     |
[INFO] [stderr] 365 |             PixelType::Grayscale1Transparent(t) => {
[INFO] [stderr]     |                                              ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `bit`
[INFO] [stderr]    --> src/colors.rs:366:21
[INFO] [stderr]     |
[INFO] [stderr] 366 |                 let bit = self.bits::<1>();
[INFO] [stderr]     |                     ^^^ help: if this is intentional, prefix it with an underscore: `_bit`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]    --> src/colors.rs:369:46
[INFO] [stderr]     |
[INFO] [stderr] 369 |             PixelType::Grayscale2Transparent(t) => {
[INFO] [stderr]     |                                              ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `bits`
[INFO] [stderr]    --> src/colors.rs:370:21
[INFO] [stderr]     |
[INFO] [stderr] 370 |                 let bits = self.bits::<2>();
[INFO] [stderr]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_bits`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]    --> src/colors.rs:373:46
[INFO] [stderr]     |
[INFO] [stderr] 373 |             PixelType::Grayscale4Transparent(t) => {
[INFO] [stderr]     |                                              ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `bits`
[INFO] [stderr]    --> src/colors.rs:374:21
[INFO] [stderr]     |
[INFO] [stderr] 374 |                 let bits = self.bits::<2>();
[INFO] [stderr]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_bits`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]    --> src/colors.rs:377:46
[INFO] [stderr]     |
[INFO] [stderr] 377 |             PixelType::Grayscale8Transparent(t) => {
[INFO] [stderr]     |                                              ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `byte`
[INFO] [stderr]    --> src/colors.rs:378:21
[INFO] [stderr]     |
[INFO] [stderr] 378 |                 let byte = self.bytes::<1>();
[INFO] [stderr]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_byte`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]    --> src/colors.rs:381:47
[INFO] [stderr]     |
[INFO] [stderr] 381 |             PixelType::Grayscale16Transparent(t) => {
[INFO] [stderr]     |                                               ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `byte`
[INFO] [stderr]    --> src/colors.rs:382:21
[INFO] [stderr]     |
[INFO] [stderr] 382 |                 let byte = self.words::<1>();
[INFO] [stderr]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_byte`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `palette`
[INFO] [stderr]    --> src/colors.rs:385:44
[INFO] [stderr]     |
[INFO] [stderr] 385 |             PixelType::Palette1Transparent(palette, p) => {
[INFO] [stderr]     |                                            ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_palette`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `p`
[INFO] [stderr]    --> src/colors.rs:385:53
[INFO] [stderr]     |
[INFO] [stderr] 385 |             PixelType::Palette1Transparent(palette, p) => {
[INFO] [stderr]     |                                                     ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `bit`
[INFO] [stderr]    --> src/colors.rs:386:21
[INFO] [stderr]     |
[INFO] [stderr] 386 |                 let bit = self.bits::<1>();
[INFO] [stderr]     |                     ^^^ help: if this is intentional, prefix it with an underscore: `_bit`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `palette`
[INFO] [stderr]    --> src/colors.rs:389:44
[INFO] [stderr]     |
[INFO] [stderr] 389 |             PixelType::Palette2Transparent(palette, p) => {
[INFO] [stderr]     |                                            ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_palette`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `p`
[INFO] [stderr]    --> src/colors.rs:389:53
[INFO] [stderr]     |
[INFO] [stderr] 389 |             PixelType::Palette2Transparent(palette, p) => {
[INFO] [stderr]     |                                                     ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `bits`
[INFO] [stderr]    --> src/colors.rs:390:21
[INFO] [stderr]     |
[INFO] [stderr] 390 |                 let bits = self.bits::<2>();
[INFO] [stderr]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_bits`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `palette`
[INFO] [stderr]    --> src/colors.rs:393:44
[INFO] [stderr]     |
[INFO] [stderr] 393 |             PixelType::Palette4Transparent(palette, p) => {
[INFO] [stderr]     |                                            ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_palette`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `p`
[INFO] [stderr]    --> src/colors.rs:393:53
[INFO] [stderr]     |
[INFO] [stderr] 393 |             PixelType::Palette4Transparent(palette, p) => {
[INFO] [stderr]     |                                                     ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `bits`
[INFO] [stderr]    --> src/colors.rs:394:21
[INFO] [stderr]     |
[INFO] [stderr] 394 |                 let bits = self.bits::<4>();
[INFO] [stderr]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_bits`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `palette`
[INFO] [stderr]    --> src/colors.rs:397:44
[INFO] [stderr]     |
[INFO] [stderr] 397 |             PixelType::Palette8Transparent(palette, p) => {
[INFO] [stderr]     |                                            ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_palette`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `p`
[INFO] [stderr]    --> src/colors.rs:397:53
[INFO] [stderr]     |
[INFO] [stderr] 397 |             PixelType::Palette8Transparent(palette, p) => {
[INFO] [stderr]     |                                                     ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `byte`
[INFO] [stderr]    --> src/colors.rs:398:21
[INFO] [stderr]     |
[INFO] [stderr] 398 |                 let byte = self.bytes::<1>();
[INFO] [stderr]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_byte`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]    --> src/colors.rs:401:40
[INFO] [stderr]     |
[INFO] [stderr] 401 |             PixelType::Rgb8Transparent(t) => {
[INFO] [stderr]     |                                        ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `bytes`
[INFO] [stderr]    --> src/colors.rs:402:21
[INFO] [stderr]     |
[INFO] [stderr] 402 |                 let bytes = self.bytes::<3>();
[INFO] [stderr]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]    --> src/colors.rs:406:41
[INFO] [stderr]     |
[INFO] [stderr] 406 |             PixelType::Rgb16Transparent(t) => {
[INFO] [stderr]     |                                         ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `bytes`
[INFO] [stderr]    --> src/colors.rs:407:21
[INFO] [stderr]     |
[INFO] [stderr] 407 |                 let bytes = self.words::<3>();
[INFO] [stderr]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `bytes`
[INFO] [stderr]    --> src/colors.rs:412:21
[INFO] [stderr]     |
[INFO] [stderr] 412 |                 let bytes = self.bytes::<2>();
[INFO] [stderr]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `bytes`
[INFO] [stderr]    --> src/colors.rs:416:21
[INFO] [stderr]     |
[INFO] [stderr] 416 |                 let bytes = self.words::<2>();
[INFO] [stderr]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `bytes`
[INFO] [stderr]    --> src/colors.rs:420:21
[INFO] [stderr]     |
[INFO] [stderr] 420 |                 let bytes = self.bytes::<4>();
[INFO] [stderr]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `bytes`
[INFO] [stderr]    --> src/colors.rs:425:21
[INFO] [stderr]     |
[INFO] [stderr] 425 |                 let bytes = self.words::<4>();
[INFO] [stderr]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `alpha`
[INFO] [stderr]    --> src/colors.rs:499:14
[INFO] [stderr]     |
[INFO] [stderr] 499 |         let (alpha, color) = self.next_keep_alpha();
[INFO] [stderr]     |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_alpha`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `color`
[INFO] [stderr]    --> src/colors.rs:499:21
[INFO] [stderr]     |
[INFO] [stderr] 499 |         let (alpha, color) = self.next_keep_alpha();
[INFO] [stderr]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_color`
[INFO] [stderr] 
[INFO] [stderr] warning: fields `palette` and `handler` are never read
[INFO] [stderr]   --> src/colors.rs:44:5
[INFO] [stderr]    |
[INFO] [stderr] 42 | pub struct PixelsIterator<'a, Color, Handler> {
[INFO] [stderr]    |            -------------- fields in this struct
[INFO] [stderr] 43 |     pixel_type: PixelType<'a>,
[INFO] [stderr] 44 |     palette: Option<&'a [u8]>,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 48 |     handler: Handler,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method `total_scanline_bytes` is never used
[INFO] [stderr]    --> src/png.rs:418:8
[INFO] [stderr]     |
[INFO] [stderr] 330 | impl PngHeader {
[INFO] [stderr]     | -------------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 418 |     fn total_scanline_bytes(&self) -> Result<usize, DecodeError> {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `embedded-png` (lib) generated 34 warnings (run `cargo fix --lib -p embedded-png` to apply 32 suggestions)
[INFO] [stderr] warning: unused import: `super::*`
[INFO] [stderr]   --> src/lib.rs:89:9
[INFO] [stderr]    |
[INFO] [stderr] 89 |     use super::*;
[INFO] [stderr]    |         ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `embedded-png` (lib test) generated 35 warnings (34 duplicates) (run `cargo fix --lib -p embedded-png --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/release/deps/embedded_png-dc028a1d110b0f9e)
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test colors::tests::bits4 ... ok
[INFO] [stdout] test colors::tests::bytes1 ... ok
[INFO] [stdout] test colors::tests::bits1 ... ok
[INFO] [stdout] test colors::tests::bits2 ... ok
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] test colors::tests::bytes2 ... ok
[INFO] [stdout] test inflate::tests::list_chunks ... ok
[INFO] [stdout] test png::tests::parse_png ... ok
[INFO] [stdout] test inflate::tests::read_chunks ... ok
[INFO] [stdout] test inflate::tests::decode ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.08s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests embedded_png
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1404df1364a4f6e3d2a984a6c4837d690b271c8fdea234f95c4124a03b9f0533", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1404df1364a4f6e3d2a984a6c4837d690b271c8fdea234f95c4124a03b9f0533", kill_on_drop: false }`
[INFO] [stdout] 1404df1364a4f6e3d2a984a6c4837d690b271c8fdea234f95c4124a03b9f0533
