[INFO] fetching crate stardetect 0.3.0...
[INFO] building stardetect-0.3.0 against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] extracting crate stardetect 0.3.0 into /workspace/builds/worker-0-tc1/source
[INFO] removed /workspace/builds/worker-0-tc1/source/.cargo/config.toml
[INFO] started tweaking crates.io crate stardetect 0.3.0
[INFO] finished tweaking crates.io crate stardetect 0.3.0
[INFO] tweaked toml for crates.io crate stardetect 0.3.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate stardetect 0.3.0 on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate stardetect 0.3.0 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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
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[INFO] [stderr]    Compiling stardetect v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `GrayscaleHistogram` is never constructed
[INFO] [stdout]  --> src/image_extensions.rs:4:19
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub(crate) struct GrayscaleHistogram(pub [usize; 255]);
[INFO] [stdout]   |                   ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_histogram` is never used
[INFO] [stdout]  --> src/image_extensions.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub(crate) trait ImageExtensions {
[INFO] [stdout]   |                  --------------- method in this trait
[INFO] [stdout] 7 |     fn channel_wise_split(&self) -> (GrayImage, GrayImage, GrayImage);
[INFO] [stdout] 8 |     fn get_histogram(&self) -> GrayscaleHistogram;
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 22s
[INFO] running `Command { std: "docker" "inspect" "ca242a21e8e96b7493e6e709fb5816aead2cfd75440f2884cdf5e97debdd9741", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca242a21e8e96b7493e6e709fb5816aead2cfd75440f2884cdf5e97debdd9741", kill_on_drop: false }`
[INFO] [stdout] ca242a21e8e96b7493e6e709fb5816aead2cfd75440f2884cdf5e97debdd9741
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6b354350c77ef49d2e6900f705360f6daa648195ec3b98f09436a56959428600
[INFO] running `Command { std: "docker" "start" "-a" "6b354350c77ef49d2e6900f705360f6daa648195ec3b98f09436a56959428600", kill_on_drop: false }`
[INFO] [stderr]    Compiling stardetect v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `GrayscaleHistogram` is never constructed
[INFO] [stdout]  --> src/image_extensions.rs:4:19
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub(crate) struct GrayscaleHistogram(pub [usize; 255]);
[INFO] [stdout]   |                   ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_histogram` is never used
[INFO] [stdout]  --> src/image_extensions.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub(crate) trait ImageExtensions {
[INFO] [stdout]   |                  --------------- method in this trait
[INFO] [stdout] 7 |     fn channel_wise_split(&self) -> (GrayImage, GrayImage, GrayImage);
[INFO] [stdout] 8 |     fn get_histogram(&self) -> GrayscaleHistogram;
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `GrayscaleHistogram` is never constructed
[INFO] [stdout]  --> src/image_extensions.rs:4:19
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub(crate) struct GrayscaleHistogram(pub [usize; 255]);
[INFO] [stdout]   |                   ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_histogram` is never used
[INFO] [stdout]  --> src/image_extensions.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub(crate) trait ImageExtensions {
[INFO] [stdout]   |                  --------------- method in this trait
[INFO] [stdout] 7 |     fn channel_wise_split(&self) -> (GrayImage, GrayImage, GrayImage);
[INFO] [stdout] 8 |     fn get_histogram(&self) -> GrayscaleHistogram;
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.46s
[INFO] running `Command { std: "docker" "inspect" "6b354350c77ef49d2e6900f705360f6daa648195ec3b98f09436a56959428600", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b354350c77ef49d2e6900f705360f6daa648195ec3b98f09436a56959428600", kill_on_drop: false }`
[INFO] [stdout] 6b354350c77ef49d2e6900f705360f6daa648195ec3b98f09436a56959428600
