[INFO] cloning repository https://github.com/PeronTheDuck/rust_Floyd_Steinberg_dithering
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/PeronTheDuck/rust_Floyd_Steinberg_dithering" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPeronTheDuck%2Frust_Floyd_Steinberg_dithering"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPeronTheDuck%2Frust_Floyd_Steinberg_dithering'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c393ff7f362813a2cc6287a1810927f28f4b2627
[INFO] checking PeronTheDuck/rust_Floyd_Steinberg_dithering against try#ea663bba38739867a4b75ac820991b4f5d093c3b for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPeronTheDuck%2Frust_Floyd_Steinberg_dithering" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/PeronTheDuck/rust_Floyd_Steinberg_dithering on toolchain ea663bba38739867a4b75ac820991b4f5d093c3b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "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 /workspace/builds/worker-4/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 `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a7ce2aaf7c0ac59c4e83a2257564a5cba29294c85b27841134847fdb1d77911e
[INFO] running `"docker" "start" "-a" "a7ce2aaf7c0ac59c4e83a2257564a5cba29294c85b27841134847fdb1d77911e"`
[INFO] [stderr]    Compiling syn v0.15.8
[INFO] [stderr]     Checking jpeg-decoder v0.1.15
[INFO] [stderr]    Compiling num-derive v0.2.3
[INFO] [stderr]     Checking tiff v0.2.1
[INFO] [stderr]     Checking image v0.20.0
[INFO] [stderr]     Checking 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] 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 23.52s
[INFO] running `"docker" "inspect" "a7ce2aaf7c0ac59c4e83a2257564a5cba29294c85b27841134847fdb1d77911e"`
[INFO] running `"docker" "rm" "-f" "a7ce2aaf7c0ac59c4e83a2257564a5cba29294c85b27841134847fdb1d77911e"`
[INFO] [stdout] a7ce2aaf7c0ac59c4e83a2257564a5cba29294c85b27841134847fdb1d77911e