[INFO] crate superpixel 0.1.1 is already in cache
[INFO] checking superpixel-0.1.1 against try#7cb06892a23b4da510686618c8730f0b2e8bd952 for pr-66963
[INFO] extracting crate superpixel 0.1.1 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate superpixel 0.1.1 on toolchain 7cb06892a23b4da510686618c8730f0b2e8bd952
[INFO] running `"/workspace/cargo-home/bin/cargo" "+7cb06892a23b4da510686618c8730f0b2e8bd952" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate superpixel 0.1.1
[INFO] finished tweaking crates.io crate superpixel 0.1.1
[INFO] tweaked toml for crates.io crate superpixel 0.1.1 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+7cb06892a23b4da510686618c8730f0b2e8bd952" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+7cb06892a23b4da510686618c8730f0b2e8bd952" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+7cb06892a23b4da510686618c8730f0b2e8bd952" "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] 6b38471f751fc9e1abe7e16dd55e208b3933247fa39e712e70d7612feb526cd0
[INFO] running `"docker" "start" "-a" "6b38471f751fc9e1abe7e16dd55e208b3933247fa39e712e70d7612feb526cd0"`
[INFO] [stderr]     Checking image v0.19.0
[INFO] [stderr]     Checking superpixel v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `idx`
[INFO] [stderr]    --> src/lib.rs:451:17
[INFO] [stderr]     |
[INFO] [stderr] 451 |             let idx = y * width + x;
[INFO] [stderr]     |                 ^^^ help: consider prefixing with an underscore: `_idx`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `klabels`
[INFO] [stderr]    --> src/lib.rs:438:5
[INFO] [stderr]     |
[INFO] [stderr] 438 |     klabels: &Vec<i32>,
[INFO] [stderr]     |     ^^^^^^^ help: consider prefixing with an underscore: `_klabels`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `outline_color`
[INFO] [stderr]    --> src/lib.rs:440:5
[INFO] [stderr]     |
[INFO] [stderr] 440 |     outline_color: &image::Rgb<u8>
[INFO] [stderr]     |     ^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_outline_color`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `idx`
[INFO] [stderr]    --> src/lib.rs:451:17
[INFO] [stderr]     |
[INFO] [stderr] 451 |             let idx = y * width + x;
[INFO] [stderr]     |                 ^^^ help: consider prefixing with an underscore: `_idx`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `klabels`
[INFO] [stderr]    --> src/lib.rs:438:5
[INFO] [stderr]     |
[INFO] [stderr] 438 |     klabels: &Vec<i32>,
[INFO] [stderr]     |     ^^^^^^^ help: consider prefixing with an underscore: `_klabels`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `outline_color`
[INFO] [stderr]    --> src/lib.rs:440:5
[INFO] [stderr]     |
[INFO] [stderr] 440 |     outline_color: &image::Rgb<u8>
[INFO] [stderr]     |     ^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_outline_color`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.92s
[INFO] running `"docker" "inspect" "6b38471f751fc9e1abe7e16dd55e208b3933247fa39e712e70d7612feb526cd0"`
[INFO] running `"docker" "rm" "-f" "6b38471f751fc9e1abe7e16dd55e208b3933247fa39e712e70d7612feb526cd0"`
[INFO] [stdout] 6b38471f751fc9e1abe7e16dd55e208b3933247fa39e712e70d7612feb526cd0