[INFO] updating cached repository https://github.com/PeronTheDuck/rust_Floyd_Steinberg_dithering
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c393ff7f362813a2cc6287a1810927f28f4b2627
[INFO] testing PeronTheDuck/rust_Floyd_Steinberg_dithering against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2FPeronTheDuck%2Frust_Floyd_Steinberg_dithering" "work/builds/worker-2/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/PeronTheDuck/rust_Floyd_Steinberg_dithering on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/PeronTheDuck/rust_Floyd_Steinberg_dithering
[INFO] finished tweaking git repo https://github.com/PeronTheDuck/rust_Floyd_Steinberg_dithering
[INFO] tweaked toml for git repo https://github.com/PeronTheDuck/rust_Floyd_Steinberg_dithering written to work/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/PeronTheDuck/rust_Floyd_Steinberg_dithering already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 57af8938ac2780f60e4eedd9df72ee1960f2515bde44deab5400779e77fd25f3
[INFO] running `"docker" "start" "-a" "57af8938ac2780f60e4eedd9df72ee1960f2515bde44deab5400779e77fd25f3"`
[INFO] [stderr]    Compiling deflate v0.7.19
[INFO] [stderr]    Compiling crossbeam-epoch v0.3.1
[INFO] [stderr]    Compiling syn v0.15.8
[INFO] [stderr]    Compiling crossbeam-deque v0.2.0
[INFO] [stderr]    Compiling png v0.12.0
[INFO] [stderr]    Compiling rayon-core v1.4.1
[INFO] [stderr]    Compiling rayon v1.0.2
[INFO] [stderr]    Compiling num-derive v0.2.3
[INFO] [stderr]    Compiling jpeg-decoder v0.1.15
[INFO] [stderr]    Compiling tiff v0.2.1
[INFO] [stderr]    Compiling image v0.20.0
[INFO] [stderr]    Compiling floyd_steinberg_dithering v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: type `rgba` should have an upper camel case name
[INFO] [stderr]  --> src/main.rs:5:6
[INFO] [stderr]   |
[INFO] [stderr] 5 | type rgba = image::Rgba<u8>;
[INFO] [stderr]   |      ^^^^ help: convert the identifier to upper camel case: `Rgba`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:57:17
[INFO] [stderr]    |
[INFO] [stderr] 57 |             let mut loss_diference: [i16; 3] = [
[INFO] [stderr]    |                 ----^^^^^^^^^^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.51s
[INFO] running `"docker" "inspect" "57af8938ac2780f60e4eedd9df72ee1960f2515bde44deab5400779e77fd25f3"`
[INFO] running `"docker" "rm" "-f" "57af8938ac2780f60e4eedd9df72ee1960f2515bde44deab5400779e77fd25f3"`
[INFO] [stdout] 57af8938ac2780f60e4eedd9df72ee1960f2515bde44deab5400779e77fd25f3
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 65bd02ab8030ed5a456c00f03b8d7688c2a5ce7ae6fbdeae31f832e1f6d44958
[INFO] running `"docker" "start" "-a" "65bd02ab8030ed5a456c00f03b8d7688c2a5ce7ae6fbdeae31f832e1f6d44958"`
[INFO] [stderr]    Compiling floyd_steinberg_dithering v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: type `rgba` should have an upper camel case name
[INFO] [stderr]  --> src/main.rs:5:6
[INFO] [stderr]   |
[INFO] [stderr] 5 | type rgba = image::Rgba<u8>;
[INFO] [stderr]   |      ^^^^ help: convert the identifier to upper camel case: `Rgba`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:57:17
[INFO] [stderr]    |
[INFO] [stderr] 57 |             let mut loss_diference: [i16; 3] = [
[INFO] [stderr]    |                 ----^^^^^^^^^^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.94s
[INFO] running `"docker" "inspect" "65bd02ab8030ed5a456c00f03b8d7688c2a5ce7ae6fbdeae31f832e1f6d44958"`
[INFO] running `"docker" "rm" "-f" "65bd02ab8030ed5a456c00f03b8d7688c2a5ce7ae6fbdeae31f832e1f6d44958"`
[INFO] [stdout] 65bd02ab8030ed5a456c00f03b8d7688c2a5ce7ae6fbdeae31f832e1f6d44958
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen"`
[INFO] [stdout] 1e468668c8e5431d59a20fb5f6cc7830e77adb67e44bf56487704df29e7e333c
[INFO] running `"docker" "start" "-a" "1e468668c8e5431d59a20fb5f6cc7830e77adb67e44bf56487704df29e7e333c"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.34s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/floyd_steinberg_dithering-21051b0871ecabea
[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
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "1e468668c8e5431d59a20fb5f6cc7830e77adb67e44bf56487704df29e7e333c"`
[INFO] running `"docker" "rm" "-f" "1e468668c8e5431d59a20fb5f6cc7830e77adb67e44bf56487704df29e7e333c"`
[INFO] [stdout] 1e468668c8e5431d59a20fb5f6cc7830e77adb67e44bf56487704df29e7e333c