[INFO] cloning repository https://github.com/ytg32/rust_exam
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ytg32/rust_exam" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fytg32%2Frust_exam", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fytg32%2Frust_exam'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 63a9e3341ded881cfe346b0aff9310da0593a862
[INFO] testing ytg32/rust_exam against master#ad85bc524b1ad696e42061ad8338d382dffbdbe5 for pr-146237
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fytg32%2Frust_exam" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ytg32/rust_exam
[INFO] finished tweaking git repo https://github.com/ytg32/rust_exam
[INFO] tweaked toml for git repo https://github.com/ytg32/rust_exam written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ytg32/rust_exam on toolchain ad85bc524b1ad696e42061ad8338d382dffbdbe5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ytg32/rust_exam 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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded v_frame v0.3.8
[INFO] [stderr]   Downloaded half v2.4.0
[INFO] [stderr]   Downloaded profiling v1.0.15
[INFO] [stderr]   Downloaded built v0.7.1
[INFO] [stderr]   Downloaded gpu-alloc v0.5.4
[INFO] [stderr]   Downloaded freetype-sys v0.13.1
[INFO] [stderr]   Downloaded avif-serialize v0.8.1
[INFO] [stderr]   Downloaded anyhow v1.0.81
[INFO] [stderr]   Downloaded phf_macros v0.11.2
[INFO] [stderr]   Downloaded num-rational v0.4.1
[INFO] [stderr]   Downloaded ravif v0.11.5
[INFO] [stderr]   Downloaded gpu-descriptor-types v0.1.2
[INFO] [stderr]   Downloaded petgraph v0.6.4
[INFO] [stderr]   Downloaded colorgrad v0.6.2
[INFO] [stderr]   Downloaded arg_enum_proc_macro v0.3.4
[INFO] [stderr]   Downloaded bitstream-io v2.2.0
[INFO] [stderr]   Downloaded image-webp v0.1.0
[INFO] [stderr]   Downloaded cfg-expr v0.15.7
[INFO] [stderr]   Downloaded winnow v0.6.5
[INFO] [stderr]   Downloaded toml_edit v0.22.7
[INFO] [stderr]   Downloaded libfuzzer-sys v0.4.7
[INFO] [stderr]   Downloaded rayon v1.9.0
[INFO] [stderr]   Downloaded wgpu-hal v0.13.2
[INFO] [stderr]   Downloaded freetype-rs v0.26.0
[INFO] [stderr]   Downloaded wgpu-core v0.13.2
[INFO] [stderr]   Downloaded cc v1.0.90
[INFO] [stderr]   Downloaded bytemuck v1.15.0
[INFO] [stderr]   Downloaded winit v0.27.5
[INFO] [stderr]   Downloaded zune-jpeg v0.4.11
[INFO] [stderr]   Downloaded wgpu-types v0.13.2
[INFO] [stderr]   Downloaded naga v0.9.0
[INFO] [stderr]   Downloaded jobserver v0.1.28
[INFO] [stderr]   Downloaded glam v0.21.3
[INFO] [stderr]   Downloaded wgpu v0.13.1
[INFO] [stderr]   Downloaded indexmap v2.2.5
[INFO] [stderr]   Downloaded safe_arch v0.5.2
[INFO] [stderr]   Downloaded av1-grain v0.2.3
[INFO] [stderr]   Downloaded target-lexicon v0.12.14
[INFO] [stderr]   Downloaded system-deps v6.2.1
[INFO] [stderr]   Downloaded show-image-macros v0.12.3
[INFO] [stderr]   Downloaded d3d12 v0.5.0
[INFO] [stderr]   Downloaded expat-sys v2.1.6
[INFO] [stderr]   Downloaded profiling-procmacros v1.0.15
[INFO] [stderr]   Downloaded raw-window-handle v0.4.3
[INFO] [stderr]   Downloaded interpolate_name v0.2.4
[INFO] [stderr]   Downloaded arbitrary v1.3.2
[INFO] [stderr]   Downloaded inplace_it v0.3.5
[INFO] [stderr]   Downloaded bit-set v0.5.3
[INFO] [stderr]   Downloaded servo-fontconfig v0.5.1
[INFO] [stderr]   Downloaded tiny-skia v0.7.0
[INFO] [stderr]   Downloaded smithay-client-toolkit v0.16.1
[INFO] [stderr]   Downloaded show-image v0.13.1
[INFO] [stderr]   Downloaded loop9 v0.1.5
[INFO] [stderr]   Downloaded noop_proc_macro v0.3.0
[INFO] [stderr]   Downloaded simd_helpers v0.1.0
[INFO] [stderr]   Downloaded metal v0.24.0
[INFO] [stderr]   Downloaded futures v0.3.30
[INFO] [stderr]   Downloaded gpu-descriptor v0.2.4
[INFO] [stderr]   Downloaded ndk-glue v0.7.0
[INFO] [stderr]   Downloaded toml v0.8.11
[INFO] [stderr]   Downloaded cocoa v0.24.1
[INFO] [stderr]   Downloaded crossfont v0.5.2
[INFO] [stderr]   Downloaded tiny-skia-path v0.7.0
[INFO] [stderr]   Downloaded text_io v0.1.12
[INFO] [stderr]   Downloaded maybe-rayon v0.1.1
[INFO] [stderr]   Downloaded num-derive v0.4.2
[INFO] [stderr]   Downloaded serde_spanned v0.6.5
[INFO] [stderr]   Downloaded version-compare v0.1.1
[INFO] [stderr]   Downloaded aligned-vec v0.5.0
[INFO] [stderr]   Downloaded range-alloc v0.1.3
[INFO] [stderr]   Downloaded sctk-adwaita v0.4.3
[INFO] [stderr]   Downloaded calloop v0.10.6
[INFO] [stderr]   Downloaded bumpalo v3.15.4
[INFO] [stderr]   Downloaded rav1e v0.7.1
[INFO] [stderr]   Downloaded servo-fontconfig-sys v5.1.0
[INFO] [stderr]   Downloaded image v0.25.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d713f8aff1f77c805b22b7f197077df7bf899acb9e98d4c61d3aa46d4a585941
[INFO] running `Command { std: "docker" "start" "-a" "d713f8aff1f77c805b22b7f197077df7bf899acb9e98d4c61d3aa46d4a585941", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d713f8aff1f77c805b22b7f197077df7bf899acb9e98d4c61d3aa46d4a585941", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d713f8aff1f77c805b22b7f197077df7bf899acb9e98d4c61d3aa46d4a585941", kill_on_drop: false }`
[INFO] [stdout] d713f8aff1f77c805b22b7f197077df7bf899acb9e98d4c61d3aa46d4a585941
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 35910c1d14ce5c838843a428e5d563bbd7f0baf1643deacb06e407e9100943f2
[INFO] running `Command { std: "docker" "start" "-a" "35910c1d14ce5c838843a428e5d563bbd7f0baf1643deacb06e407e9100943f2", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling pkg-config v0.3.30
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling once_cell v1.19.0
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling thiserror v1.0.58
[INFO] [stderr]    Compiling log v0.4.21
[INFO] [stderr]    Compiling smallvec v1.13.1
[INFO] [stderr]    Compiling cc v1.0.90
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling lock_api v0.4.11
[INFO] [stderr]    Compiling simd-adler32 v0.3.7
[INFO] [stderr]    Compiling xml-rs v0.8.19
[INFO] [stderr]    Compiling ahash v0.8.11
[INFO] [stderr]    Compiling bytemuck v1.15.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.19
[INFO] [stderr]    Compiling libloading v0.8.3
[INFO] [stderr]    Compiling adler v1.0.2
[INFO] [stderr]    Compiling zerocopy v0.7.32
[INFO] [stderr]    Compiling crc32fast v1.4.0
[INFO] [stderr]    Compiling miniz_oxide v0.7.2
[INFO] [stderr]    Compiling arrayvec v0.7.4
[INFO] [stderr]    Compiling dlib v0.5.2
[INFO] [stderr]    Compiling memchr v2.7.1
[INFO] [stderr]    Compiling allocator-api2 v0.2.16
[INFO] [stderr]    Compiling parking_lot_core v0.9.9
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling rayon-core v1.12.1
[INFO] [stderr]    Compiling slotmap v1.0.7
[INFO] [stderr]    Compiling num-bigint v0.4.4
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling equivalent v1.0.1
[INFO] [stderr]    Compiling downcast-rs v1.2.0
[INFO] [stderr]    Compiling scoped-tls v1.0.1
[INFO] [stderr]    Compiling fdeflate v0.3.4
[INFO] [stderr]    Compiling libloading v0.7.4
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling wayland-sys v0.29.5
[INFO] [stderr]    Compiling servo-fontconfig-sys v5.1.0
[INFO] [stderr]    Compiling cmake v0.1.50
[INFO] [stderr]    Compiling hashbrown v0.14.3
[INFO] [stderr]    Compiling flate2 v1.0.28
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling cty v0.2.2
[INFO] [stderr]    Compiling either v1.10.0
[INFO] [stderr]    Compiling semver v1.0.22
[INFO] [stderr]    Compiling syn v2.0.52
[INFO] [stderr]    Compiling wayland-scanner v0.29.5
[INFO] [stderr]    Compiling nix v0.24.3
[INFO] [stderr]    Compiling crossbeam-deque v0.8.5
[INFO] [stderr]    Compiling khronos-egl v4.1.0
[INFO] [stderr]    Compiling termcolor v1.4.1
[INFO] [stderr]    Compiling unicode-width v0.1.11
[INFO] [stderr]    Compiling bitflags v2.4.2
[INFO] [stderr]    Compiling indexmap v2.2.5
[INFO] [stderr]    Compiling ash v0.37.3+1.3.251
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling anyhow v1.0.81
[INFO] [stderr]    Compiling bit-vec v0.6.3
[INFO] [stderr]    Compiling fixedbitset v0.4.2
[INFO] [stderr]    Compiling gpu-descriptor-types v0.1.2
[INFO] [stderr]    Compiling parking_lot v0.12.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling spirv v0.2.0+1.5.4
[INFO] [stderr]    Compiling codespan-reporting v0.11.1
[INFO] [stderr]    Compiling freetype-sys v0.13.1
[INFO] [stderr]    Compiling expat-sys v2.1.6
[INFO] [stderr]    Compiling bit-set v0.5.3
[INFO] [stderr]    Compiling nix v0.25.1
[INFO] [stderr]    Compiling png v0.17.13
[INFO] [stderr]    Compiling raw-window-handle v0.4.3
[INFO] [stderr]    Compiling petgraph v0.6.4
[INFO] [stderr]    Compiling wayland-client v0.29.5
[INFO] [stderr]    Compiling wayland-protocols v0.29.5
[INFO] [stderr]    Compiling crossfont v0.5.2
[INFO] [stderr]    Compiling smithay-client-toolkit v0.16.1
[INFO] [stderr]    Compiling phf_shared v0.11.2
[INFO] [stderr]    Compiling gpu-alloc-types v0.2.0
[INFO] [stderr]    Compiling xcursor v0.3.5
[INFO] [stderr]    Compiling hexf-parse v0.2.1
[INFO] [stderr]    Compiling aligned-vec v0.5.0
[INFO] [stderr]    Compiling built v0.7.1
[INFO] [stderr]    Compiling arrayref v0.3.7
[INFO] [stderr]    Compiling paste v1.0.14
[INFO] [stderr]    Compiling futures-core v0.3.30
[INFO] [stderr]    Compiling foreign-types-shared v0.3.1
[INFO] [stderr]    Compiling cfg_aliases v0.1.1
[INFO] [stderr]    Compiling minimal-lexical v0.2.1
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling futures-sink v0.3.30
[INFO] [stderr]    Compiling unicode-xid v0.2.4
[INFO] [stderr]    Compiling wgpu-core v0.13.2
[INFO] [stderr]    Compiling v_frame v0.3.8
[INFO] [stderr]    Compiling tiny-skia-path v0.7.0
[INFO] [stderr]    Compiling futures-channel v0.3.30
[INFO] [stderr]    Compiling phf_generator v0.11.2
[INFO] [stderr]    Compiling servo-fontconfig v0.5.1
[INFO] [stderr]    Compiling rav1e v0.7.1
[INFO] [stderr]    Compiling gpu-alloc v0.5.4
[INFO] [stderr]    Compiling wayland-commons v0.29.5
[INFO] [stderr]    Compiling freetype-rs v0.26.0
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling rayon v1.9.0
[INFO] [stderr]    Compiling gpu-descriptor v0.2.4
[INFO] [stderr]    Compiling memmap2 v0.5.10
[INFO] [stderr]    Compiling x11-dl v2.21.0
[INFO] [stderr]    Compiling safe_arch v0.5.2
[INFO] [stderr]    Compiling wgpu-types v0.13.2
[INFO] [stderr]    Compiling color_quant v1.1.0
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling futures-io v0.3.30
[INFO] [stderr]    Compiling renderdoc-sys v0.7.1
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling futures-task v0.3.30
[INFO] [stderr]    Compiling glow v0.11.2
[INFO] [stderr]    Compiling pin-project-lite v0.2.13
[INFO] [stderr]    Compiling inplace_it v0.3.5
[INFO] [stderr]    Compiling futures-util v0.3.30
[INFO] [stderr]    Compiling tiny-skia v0.7.0
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling simd_helpers v0.1.0
[INFO] [stderr]    Compiling itertools v0.12.1
[INFO] [stderr]    Compiling spin v0.9.8
[INFO] [stderr]    Compiling weezl v0.1.8
[INFO] [stderr]    Compiling copyless v0.1.5
[INFO] [stderr]    Compiling bitstream-io v2.2.0
[INFO] [stderr]    Compiling noop_proc_macro v0.3.0
[INFO] [stderr]    Compiling imgref v1.10.1
[INFO] [stderr]    Compiling flume v0.11.0
[INFO] [stderr]    Compiling show-image v0.13.1
[INFO] [stderr]    Compiling av1-grain v0.2.3
[INFO] [stderr]    Compiling loop9 v0.1.5
[INFO] [stderr]    Compiling wayland-cursor v0.29.5
[INFO] [stderr]    Compiling mio v0.8.11
[INFO] [stderr]    Compiling avif-serialize v0.8.1
[INFO] [stderr]    Compiling zune-inflate v0.2.54
[INFO] [stderr]    Compiling rgb v0.8.37
[INFO] [stderr]    Compiling instant v0.1.12
[INFO] [stderr]    Compiling half v2.4.0
[INFO] [stderr]    Compiling lebe v0.5.2
[INFO] [stderr]    Compiling jpeg-decoder v0.3.1
[INFO] [stderr]    Compiling bit_field v0.10.2
[INFO] [stderr]    Compiling quick-error v2.0.1
[INFO] [stderr]    Compiling raw-window-handle v0.5.2
[INFO] [stderr]    Compiling zune-core v0.4.12
[INFO] [stderr]    Compiling exr v1.72.0
[INFO] [stderr]    Compiling gif v0.13.1
[INFO] [stderr]    Compiling zune-jpeg v0.4.11
[INFO] [stderr]    Compiling image v0.24.9
[INFO] [stderr]    Compiling maybe-rayon v0.1.1
[INFO] [stderr]    Compiling qoi v0.4.1
[INFO] [stderr]    Compiling tiff v0.9.1
[INFO] [stderr]    Compiling glam v0.21.3
[INFO] [stderr]    Compiling text_io v0.1.12
[INFO] [stderr]    Compiling thiserror-impl v1.0.58
[INFO] [stderr]    Compiling profiling-procmacros v1.0.15
[INFO] [stderr]    Compiling foreign-types-macros v0.2.3
[INFO] [stderr]    Compiling profiling v1.0.15
[INFO] [stderr]    Compiling num-derive v0.4.2
[INFO] [stderr]    Compiling phf_macros v0.11.2
[INFO] [stderr]    Compiling arg_enum_proc_macro v0.3.4
[INFO] [stderr]    Compiling foreign-types v0.5.0
[INFO] [stderr]    Compiling futures-executor v0.3.30
[INFO] [stderr]    Compiling phf v0.11.2
[INFO] [stderr]    Compiling futures v0.3.30
[INFO] [stderr]    Compiling calloop v0.10.6
[INFO] [stderr]    Compiling naga v0.9.0
[INFO] [stderr]    Compiling image-webp v0.1.0
[INFO] [stderr]    Compiling csscolorparser v0.6.2
[INFO] [stderr]    Compiling colorgrad v0.6.2
[INFO] [stderr]    Compiling show-image-macros v0.12.3
[INFO] [stderr]    Compiling ravif v0.11.5
[INFO] [stderr]    Compiling wgpu-hal v0.13.2
[INFO] [stderr]    Compiling image v0.25.0
[INFO] [stderr]    Compiling wgpu v0.13.1
[INFO] [stderr]    Compiling sctk-adwaita v0.4.3
[INFO] [stderr]    Compiling winit v0.27.5
[INFO] [stderr]    Compiling final_exercice v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `get_max_iterations` is never used
[INFO] [stdout]  --> src/mandelbrot.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub trait ColorMap {
[INFO] [stdout]   |           -------- method in this trait
[INFO] [stdout] 7 |     fn color(&self, i: u32) -> image::Rgb<u8>;
[INFO] [stdout] 8 |     fn get_max_iterations(&self) -> u32;
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]  --> src/util.rs:7:33
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn to_showable_image(image: &RgbImage) -> show_image::ImageView {
[INFO] [stdout]   |                                 ^^^^^^^^^     ^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]   |                                 |
[INFO] [stdout]   |                                 the lifetime is elided here
[INFO] [stdout]   |
[INFO] [stdout]   = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]   = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn to_showable_image(image: &RgbImage) -> show_image::ImageView<'_> {
[INFO] [stdout]   |                                                                    ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2m 09s
[INFO] running `Command { std: "docker" "inspect" "35910c1d14ce5c838843a428e5d563bbd7f0baf1643deacb06e407e9100943f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35910c1d14ce5c838843a428e5d563bbd7f0baf1643deacb06e407e9100943f2", kill_on_drop: false }`
[INFO] [stdout] 35910c1d14ce5c838843a428e5d563bbd7f0baf1643deacb06e407e9100943f2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e148a73c35fcf66191b87b3933c1f980649cab18f9672f290f2b696337660e26
[INFO] running `Command { std: "docker" "start" "-a" "e148a73c35fcf66191b87b3933c1f980649cab18f9672f290f2b696337660e26", kill_on_drop: false }`
[INFO] [stderr]    Compiling final_exercice v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `get_max_iterations` is never used
[INFO] [stdout]  --> src/mandelbrot.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub trait ColorMap {
[INFO] [stdout]   |           -------- method in this trait
[INFO] [stdout] 7 |     fn color(&self, i: u32) -> image::Rgb<u8>;
[INFO] [stdout] 8 |     fn get_max_iterations(&self) -> u32;
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]  --> src/util.rs:7:33
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn to_showable_image(image: &RgbImage) -> show_image::ImageView {
[INFO] [stdout]   |                                 ^^^^^^^^^     ^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]   |                                 |
[INFO] [stdout]   |                                 the lifetime is elided here
[INFO] [stdout]   |
[INFO] [stdout]   = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]   = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn to_showable_image(image: &RgbImage) -> show_image::ImageView<'_> {
[INFO] [stdout]   |                                                                    ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.75s
[INFO] running `Command { std: "docker" "inspect" "e148a73c35fcf66191b87b3933c1f980649cab18f9672f290f2b696337660e26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e148a73c35fcf66191b87b3933c1f980649cab18f9672f290f2b696337660e26", kill_on_drop: false }`
[INFO] [stdout] e148a73c35fcf66191b87b3933c1f980649cab18f9672f290f2b696337660e26
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 0b41bc89b5ad2e0478ddee3683d7d5b9a4c9e6c2bc74b56328a576da964479a5
[INFO] running `Command { std: "docker" "start" "-a" "0b41bc89b5ad2e0478ddee3683d7d5b9a4c9e6c2bc74b56328a576da964479a5", kill_on_drop: false }`
[INFO] [stderr] warning: method `get_max_iterations` is never used
[INFO] [stderr]  --> src/mandelbrot.rs:8:8
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub trait ColorMap {
[INFO] [stderr]   |           -------- method in this trait
[INFO] [stderr] 7 |     fn color(&self, i: u32) -> image::Rgb<u8>;
[INFO] [stderr] 8 |     fn get_max_iterations(&self) -> u32;
[INFO] [stderr]   |        ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]  --> src/util.rs:7:33
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn to_showable_image(image: &RgbImage) -> show_image::ImageView {
[INFO] [stderr]   |                                 ^^^^^^^^^     ^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]   |                                 |
[INFO] [stderr]   |                                 the lifetime is elided here
[INFO] [stderr]   |
[INFO] [stderr]   = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]   = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn to_showable_image(image: &RgbImage) -> show_image::ImageView<'_> {
[INFO] [stderr]   |                                                                    ++++
[INFO] [stderr] 
[INFO] [stderr] warning: `final_exercice` (bin "final_exercice" test) generated 2 warnings (run `cargo fix --bin "final_exercice" --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.26s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/final_exercice-6e2bc4d016ad24ed)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::test_get_board_color_40by40 ... ok
[INFO] [stdout] test tests::test_get_board_color_8by8 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "0b41bc89b5ad2e0478ddee3683d7d5b9a4c9e6c2bc74b56328a576da964479a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b41bc89b5ad2e0478ddee3683d7d5b9a4c9e6c2bc74b56328a576da964479a5", kill_on_drop: false }`
[INFO] [stdout] 0b41bc89b5ad2e0478ddee3683d7d5b9a4c9e6c2bc74b56328a576da964479a5