[INFO] cloning repository https://github.com/joshuacox1/dither
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/joshuacox1/dither" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjoshuacox1%2Fdither", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjoshuacox1%2Fdither'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e95f964f8f97aeee3d3bb1ca09c1b1b579cd69cd
[INFO] checking joshuacox1/dither against master#377656d3dd3f9c23a9c8713e163f4365a5261a84 for pr-146470-4
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjoshuacox1%2Fdither" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/joshuacox1/dither
[INFO] finished tweaking git repo https://github.com/joshuacox1/dither
[INFO] tweaked toml for git repo https://github.com/joshuacox1/dither written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/joshuacox1/dither on toolchain 377656d3dd3f9c23a9c8713e163f4365a5261a84
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+377656d3dd3f9c23a9c8713e163f4365a5261a84" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/joshuacox1/dither 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" "+377656d3dd3f9c23a9c8713e163f4365a5261a84" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rand_xoshiro v0.7.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+377656d3dd3f9c23a9c8713e163f4365a5261a84" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5333bd4bdb2d3115110922c8101b83f561a68e1e396b186aae298a8e969fb11f
[INFO] running `Command { std: "docker" "start" "-a" "5333bd4bdb2d3115110922c8101b83f561a68e1e396b186aae298a8e969fb11f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5333bd4bdb2d3115110922c8101b83f561a68e1e396b186aae298a8e969fb11f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5333bd4bdb2d3115110922c8101b83f561a68e1e396b186aae298a8e969fb11f", kill_on_drop: false }`
[INFO] [stdout] 5333bd4bdb2d3115110922c8101b83f561a68e1e396b186aae298a8e969fb11f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+377656d3dd3f9c23a9c8713e163f4365a5261a84" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e532bd86e96d961ab44e1e9214b6aae5b7bd5ed328ff1b0f15126ef9be34bbf1
[INFO] running `Command { std: "docker" "start" "-a" "e532bd86e96d961ab44e1e9214b6aae5b7bd5ed328ff1b0f15126ef9be34bbf1", kill_on_drop: false }`
[INFO] [stderr]    Compiling zerocopy v0.8.28
[INFO] [stderr]     Checking arrayvec v0.7.6
[INFO] [stderr]    Compiling getrandom v0.3.4
[INFO] [stderr]     Checking as-slice v0.2.1
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[INFO] [stderr]     Checking core2 v0.4.0
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[INFO] [stderr]     Checking num-bigint v0.4.6
[INFO] [stderr]    Compiling simd_helpers v0.1.0
[INFO] [stderr]     Checking maybe-rayon v0.1.1
[INFO] [stderr]     Checking imgref v1.12.0
[INFO] [stderr]     Checking aligned v0.4.2
[INFO] [stderr]     Checking weezl v0.1.12
[INFO] [stderr]     Checking zune-core v0.4.12
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[INFO] [stderr]     Checking pxfm v0.1.25
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[INFO] [stderr]     Checking rgb v0.8.52
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[INFO] [stderr]     Checking png v0.18.0
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[INFO] [stderr]     Checking moxcms v0.7.9
[INFO] [stderr]    Compiling equator-macro v0.4.2
[INFO] [stderr]    Compiling zerocopy-derive v0.8.28
[INFO] [stderr]    Compiling thiserror-impl v2.0.17
[INFO] [stderr]    Compiling profiling-procmacros v1.0.17
[INFO] [stderr]    Compiling arg_enum_proc_macro v0.3.4
[INFO] [stderr]    Compiling fax_derive v0.2.0
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[INFO] [stderr]     Checking equator v0.4.2
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[INFO] [stderr]     Checking rand v0.9.2
[INFO] [stderr]     Checking ravif v0.12.0
[INFO] [stderr]     Checking image v0.25.9
[INFO] [stderr]     Checking dither v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::borrow::Cow`
[INFO] [stdout]  --> src/img.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::borrow::Cow;
[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 import: `Encoder`
[INFO] [stdout]  --> src/img.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     Encoder, EncodingError,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Vec2D`
[INFO] [stdout]  --> src/quantise.rs:3:28
[INFO] [stdout]   |
[INFO] [stdout] 3 | use super::{Oklabr, Image, Vec2D, Palette};
[INFO] [stdout]   |                            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::Cow`
[INFO] [stdout]  --> src/img.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::borrow::Cow;
[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 import: `Encoder`
[INFO] [stdout]  --> src/img.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     Encoder, EncodingError,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Vec2D`
[INFO] [stdout]  --> src/quantise.rs:3:28
[INFO] [stdout]   |
[INFO] [stdout] 3 | use super::{Oklabr, Image, Vec2D, Palette};
[INFO] [stdout]   |                            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `it`
[INFO] [stdout]   --> src/dither.rs:81:13
[INFO] [stdout]    |
[INFO] [stdout] 81 |         for it in 0..n {
[INFO] [stdout]    |             ^^ help: if this is intentional, prefix it with an underscore: `_it`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `it`
[INFO] [stdout]   --> src/dither.rs:81:13
[INFO] [stdout]    |
[INFO] [stdout] 81 |         for it in 0..n {
[INFO] [stdout]    |             ^^ help: if this is intentional, prefix it with an underscore: `_it`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `writer`
[INFO] [stdout]    --> src/img.rs:127:32
[INFO] [stdout]     |
[INFO] [stdout] 127 |     pub fn write_png<W: Write>(writer: W) -> io::Result<()> {
[INFO] [stdout]     |                                ^^^^^^ help: if this is intentional, prefix it with an underscore: `_writer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `reader`
[INFO] [stdout]    --> src/img.rs:132:30
[INFO] [stdout]     |
[INFO] [stdout] 132 |     pub fn read_png<R: Read>(reader: R) -> io::Result<Self> {
[INFO] [stdout]     |                              ^^^^^^ help: if this is intentional, prefix it with an underscore: `_reader`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `writer`
[INFO] [stdout]    --> src/img.rs:127:32
[INFO] [stdout]     |
[INFO] [stdout] 127 |     pub fn write_png<W: Write>(writer: W) -> io::Result<()> {
[INFO] [stdout]     |                                ^^^^^^ help: if this is intentional, prefix it with an underscore: `_writer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `reader`
[INFO] [stdout]    --> src/img.rs:132:30
[INFO] [stdout]     |
[INFO] [stdout] 132 |     pub fn read_png<R: Read>(reader: R) -> io::Result<Self> {
[INFO] [stdout]     |                              ^^^^^^ help: if this is intentional, prefix it with an underscore: `_reader`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `images`
[INFO] [stdout]   --> src/quantise.rs:25:29
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn quantise_mult(&self, images: &[Image<Oklabr>]) -> Cow<'_, Palette<Oklabr>> {
[INFO] [stdout]    |                             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_images`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `images`
[INFO] [stdout]   --> src/quantise.rs:25:29
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn quantise_mult(&self, images: &[Image<Oklabr>]) -> Cow<'_, Palette<Oklabr>> {
[INFO] [stdout]    |                             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_images`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `counter` is assigned to, but never used
[INFO] [stdout]   --> src/quantise.rs:65:13
[INFO] [stdout]    |
[INFO] [stdout] 65 |         let mut counter = 0;
[INFO] [stdout]    |             ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_counter` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `counter` is never read
[INFO] [stdout]    --> src/quantise.rs:105:13
[INFO] [stdout]     |
[INFO] [stdout] 105 |             counter += 1;
[INFO] [stdout]     |             ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `counter` is assigned to, but never used
[INFO] [stdout]   --> src/quantise.rs:65:13
[INFO] [stdout]    |
[INFO] [stdout] 65 |         let mut counter = 0;
[INFO] [stdout]    |             ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_counter` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `counter` is never read
[INFO] [stdout]    --> src/quantise.rs:105:13
[INFO] [stdout]     |
[INFO] [stdout] 105 |             counter += 1;
[INFO] [stdout]     |             ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/main.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{Write, BufWriter};
[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 import: `image::ImageReader`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use image::ImageReader;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashSet`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::collections::HashSet;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ErrorDiffusion`, `NoDither`, `Oklabr`, and `Palette`
[INFO] [stdout]  --> src/main.rs:6:14
[INFO] [stdout]   |
[INFO] [stdout] 6 | use dither::{Oklabr, Image, Rgb888, NoDither, KnollDither,
[INFO] [stdout]   |              ^^^^^^                 ^^^^^^^^
[INFO] [stdout] 7 |     Palette, Dither, ErrorDiffusion, Quantise, KmeansClustering};
[INFO] [stdout]   |     ^^^^^^^          ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/main.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{Write, BufWriter};
[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 import: `image::ImageReader`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use image::ImageReader;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashSet`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::collections::HashSet;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ErrorDiffusion`, `NoDither`, `Oklabr`, and `Palette`
[INFO] [stdout]  --> src/main.rs:6:14
[INFO] [stdout]   |
[INFO] [stdout] 6 | use dither::{Oklabr, Image, Rgb888, NoDither, KnollDither,
[INFO] [stdout]   |              ^^^^^^                 ^^^^^^^^
[INFO] [stdout] 7 |     Palette, Dither, ErrorDiffusion, Quantise, KmeansClustering};
[INFO] [stdout]   |     ^^^^^^^          ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 14.04s
[INFO] running `Command { std: "docker" "inspect" "e532bd86e96d961ab44e1e9214b6aae5b7bd5ed328ff1b0f15126ef9be34bbf1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e532bd86e96d961ab44e1e9214b6aae5b7bd5ed328ff1b0f15126ef9be34bbf1", kill_on_drop: false }`
[INFO] [stdout] e532bd86e96d961ab44e1e9214b6aae5b7bd5ed328ff1b0f15126ef9be34bbf1
