[INFO] fetching crate image_colorpalette 0.1.5...
[INFO] checking image_colorpalette-0.1.5 against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] extracting crate image_colorpalette 0.1.5 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate image_colorpalette 0.1.5 on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate image_colorpalette 0.1.5
[INFO] finished tweaking crates.io crate image_colorpalette 0.1.5
[INFO] tweaked toml for crates.io crate image_colorpalette 0.1.5 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 161 packages to latest compatible versions
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[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 387e525d7df962fe3c5245f6049c64ce603481955d7381497bfd8416dafcab3a
[INFO] running `Command { std: "docker" "start" "-a" "387e525d7df962fe3c5245f6049c64ce603481955d7381497bfd8416dafcab3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "387e525d7df962fe3c5245f6049c64ce603481955d7381497bfd8416dafcab3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "387e525d7df962fe3c5245f6049c64ce603481955d7381497bfd8416dafcab3a", kill_on_drop: false }`
[INFO] [stdout] 387e525d7df962fe3c5245f6049c64ce603481955d7381497bfd8416dafcab3a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d7b3d517f1661fbb4537e58ec5a7509fb2bcc8b95ebbdc3f2ba9094456d6bda3
[INFO] running `Command { std: "docker" "start" "-a" "d7b3d517f1661fbb4537e58ec5a7509fb2bcc8b95ebbdc3f2ba9094456d6bda3", kill_on_drop: false }`
[INFO] [stderr]     Checking simd-adler32 v0.3.7
[INFO] [stderr]     Checking tokio v1.39.3
[INFO] [stderr]    Compiling syn v2.0.76
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[INFO] [stderr]     Checking image_colorpalette v0.1.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&u8` instead of cloning the inner type
[INFO] [stdout]    --> src/handle_image.rs:139:50
[INFO] [stdout]     |
[INFO] [stdout] 139 |                 match vec.iter().max_by_key(|x| x.clone()) {
[INFO] [stdout]     |                                                  ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&u8` instead of cloning the inner type
[INFO] [stdout]    --> src/handle_image.rs:139:50
[INFO] [stdout]     |
[INFO] [stdout] 139 |                 match vec.iter().max_by_key(|x| x.clone()) {
[INFO] [stdout]     |                                                  ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.78s
[INFO] running `Command { std: "docker" "inspect" "d7b3d517f1661fbb4537e58ec5a7509fb2bcc8b95ebbdc3f2ba9094456d6bda3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7b3d517f1661fbb4537e58ec5a7509fb2bcc8b95ebbdc3f2ba9094456d6bda3", kill_on_drop: false }`
[INFO] [stdout] d7b3d517f1661fbb4537e58ec5a7509fb2bcc8b95ebbdc3f2ba9094456d6bda3