[INFO] cloning repository https://github.com/mhcoelhosilva/rust-image-compression
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mhcoelhosilva/rust-image-compression" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmhcoelhosilva%2Frust-image-compression", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmhcoelhosilva%2Frust-image-compression'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7091cdbe5a2ca66f6e67c5c8d00715c37003fa52
[INFO] checking mhcoelhosilva/rust-image-compression against try#b32fc44666c052e7cf07ab471bfb6f9ec571902f for pr-138676
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmhcoelhosilva%2Frust-image-compression" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mhcoelhosilva/rust-image-compression on toolchain b32fc44666c052e7cf07ab471bfb6f9ec571902f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b32fc44666c052e7cf07ab471bfb6f9ec571902f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mhcoelhosilva/rust-image-compression
[INFO] finished tweaking git repo https://github.com/mhcoelhosilva/rust-image-compression
[INFO] tweaked toml for git repo https://github.com/mhcoelhosilva/rust-image-compression written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/mhcoelhosilva/rust-image-compression 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" "+b32fc44666c052e7cf07ab471bfb6f9ec571902f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+b32fc44666c052e7cf07ab471bfb6f9ec571902f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 147eddf9c67e6fb30a25bfda9049459ceee19146ebb5dd67787aa7f4a6358496
[INFO] running `Command { std: "docker" "start" "-a" "147eddf9c67e6fb30a25bfda9049459ceee19146ebb5dd67787aa7f4a6358496", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "147eddf9c67e6fb30a25bfda9049459ceee19146ebb5dd67787aa7f4a6358496", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "147eddf9c67e6fb30a25bfda9049459ceee19146ebb5dd67787aa7f4a6358496", kill_on_drop: false }`
[INFO] [stdout] 147eddf9c67e6fb30a25bfda9049459ceee19146ebb5dd67787aa7f4a6358496
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+b32fc44666c052e7cf07ab471bfb6f9ec571902f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c61e862ec59d6617a5da8dac5379d69eda9d92a1faa3e0c60b69df9738f74b4d
[INFO] running `Command { std: "docker" "start" "-a" "c61e862ec59d6617a5da8dac5379d69eda9d92a1faa3e0c60b69df9738f74b4d", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.2.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling libm v0.2.8
[INFO] [stderr]     Checking cfg-if v1.0.0
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[INFO] [stderr]    Compiling libc v0.2.153
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[INFO] [stderr]    Compiling num-traits v0.2.18
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[INFO] [stderr]    Compiling nalgebra-macros v0.2.1
[INFO] [stderr]     Checking maybe-rayon v0.1.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.58
[INFO] [stderr]    Compiling profiling-procmacros v1.0.15
[INFO] [stderr]    Compiling arg_enum_proc_macro v0.3.4
[INFO] [stderr]    Compiling num-derive v0.4.2
[INFO] [stderr]     Checking profiling v1.0.15
[INFO] [stderr]     Checking image-webp v0.1.1
[INFO] [stderr]     Checking nalgebra v0.32.5
[INFO] [stderr]     Checking ravif v0.11.5
[INFO] [stderr]     Checking image v0.25.1
[INFO] [stderr]     Checking rust-image-compression v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `image::RgbImage`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use image::RgbImage;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `image::RgbImage`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use image::RgbImage;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/dct.rs:42:13
[INFO] [stdout]    |
[INFO] [stdout] 42 |         let mut d = self.generate_n_point_dct(n);
[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/dct.rs:42:13
[INFO] [stdout]    |
[INFO] [stdout] 42 |         let mut d = self.generate_n_point_dct(n);
[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: function `RGB_to_YCbCrF32_and_back` should have a snake case name
[INFO] [stdout]   --> src/pixel_unit.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn RGB_to_YCbCrF32_and_back() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `rgb_to_ycb_cr_f32_and_back`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 37.21s
[INFO] running `Command { std: "docker" "inspect" "c61e862ec59d6617a5da8dac5379d69eda9d92a1faa3e0c60b69df9738f74b4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c61e862ec59d6617a5da8dac5379d69eda9d92a1faa3e0c60b69df9738f74b4d", kill_on_drop: false }`
[INFO] [stdout] c61e862ec59d6617a5da8dac5379d69eda9d92a1faa3e0c60b69df9738f74b4d