[INFO] updating cached repository disjukr/adaptive-thresholding
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/disjukr/adaptive-thresholding
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/disjukr/adaptive-thresholding" "work/ex/clippy-test-run/sources/stable/gh/disjukr/adaptive-thresholding"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/disjukr/adaptive-thresholding'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/disjukr/adaptive-thresholding" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/disjukr/adaptive-thresholding"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/disjukr/adaptive-thresholding'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a699efd4510aca5c6807ac87c6a7f9fa1b73e300
[INFO] sha for GitHub repo disjukr/adaptive-thresholding: a699efd4510aca5c6807ac87c6a7f9fa1b73e300
[INFO] validating manifest of disjukr/adaptive-thresholding on toolchain stable
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of disjukr/adaptive-thresholding on toolchain stable+rustflags=-Dclippy::into_iter_on_array
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing disjukr/adaptive-thresholding
[INFO] finished frobbing disjukr/adaptive-thresholding
[INFO] frobbed toml for disjukr/adaptive-thresholding written to work/ex/clippy-test-run/sources/stable/gh/disjukr/adaptive-thresholding/Cargo.toml
[INFO] started frobbing disjukr/adaptive-thresholding
[INFO] finished frobbing disjukr/adaptive-thresholding
[INFO] frobbed toml for disjukr/adaptive-thresholding written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/disjukr/adaptive-thresholding/Cargo.toml
[INFO] crate disjukr/adaptive-thresholding has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] linting disjukr/adaptive-thresholding against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-5/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/disjukr/adaptive-thresholding:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+stable" "clippy" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 53b943ce4d36aa017da297f2de88f029fe90f5684e185938bb07003475af4f24
[INFO] running `"docker" "start" "-a" "53b943ce4d36aa017da297f2de88f029fe90f5684e185938bb07003475af4f24"`
[INFO] [stderr]     Checking num-rational v0.1.40
[INFO] [stderr]     Checking image v0.18.0
[INFO] [stderr]     Checking adaptive-thresholding v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: 5th binding whose name is just one char
[INFO] [stderr]   --> src/main.rs:89:17
[INFO] [stderr]    |
[INFO] [stderr] 89 |             let c = integral_image.get_pixel(x1 - 1, y2).to_luma()[0] as i32;
[INFO] [stderr]    |                 ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::many_single_char_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 6th binding whose name is just one char
[INFO] [stderr]   --> src/main.rs:90:17
[INFO] [stderr]    |
[INFO] [stderr] 90 |             let d = integral_image.get_pixel(x2, y2).to_luma()[0] as i32;
[INFO] [stderr]    |                 ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 7th binding whose name is just one char
[INFO] [stderr]   --> src/main.rs:93:17
[INFO] [stderr]    |
[INFO] [stderr] 93 |             let p = if curr <= (sum * (100 - threshold) / 100) {
[INFO] [stderr]    |                 ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 5th binding whose name is just one char
[INFO] [stderr]   --> src/main.rs:89:17
[INFO] [stderr]    |
[INFO] [stderr] 89 |             let c = integral_image.get_pixel(x1 - 1, y2).to_luma()[0] as i32;
[INFO] [stderr]    |                 ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::many_single_char_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 6th binding whose name is just one char
[INFO] [stderr]   --> src/main.rs:90:17
[INFO] [stderr]    |
[INFO] [stderr] 90 |             let d = integral_image.get_pixel(x2, y2).to_luma()[0] as i32;
[INFO] [stderr]    |                 ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 7th binding whose name is just one char
[INFO] [stderr]   --> src/main.rs:93:17
[INFO] [stderr]    |
[INFO] [stderr] 93 |             let p = if curr <= (sum * (100 - threshold) / 100) {
[INFO] [stderr]    |                 ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u32 may become silently lossy if types change
[INFO] [stderr]   --> src/main.rs:28:20
[INFO] [stderr]    |
[INFO] [stderr] 28 |             sum += img.get_pixel(i, j).to_luma()[0] as u32;
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `u32::from(img.get_pixel(i, j).to_luma()[0])`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to i32 may become silently lossy if types change
[INFO] [stderr]   --> src/main.rs:92:24
[INFO] [stderr]    |
[INFO] [stderr] 92 |             let curr = (img.get_pixel(i, j).to_luma()[0] as i32) * count;
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `i32::from(img.get_pixel(i, j).to_luma()[0])`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u32 may become silently lossy if types change
[INFO] [stderr]   --> src/main.rs:28:20
[INFO] [stderr]    |
[INFO] [stderr] 28 |             sum += img.get_pixel(i, j).to_luma()[0] as u32;
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `u32::from(img.get_pixel(i, j).to_luma()[0])`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to i32 may become silently lossy if types change
[INFO] [stderr]   --> src/main.rs:92:24
[INFO] [stderr]    |
[INFO] [stderr] 92 |             let curr = (img.get_pixel(i, j).to_luma()[0] as i32) * count;
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `i32::from(img.get_pixel(i, j).to_luma()[0])`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.17s
[INFO] running `"docker" "inspect" "53b943ce4d36aa017da297f2de88f029fe90f5684e185938bb07003475af4f24"`
[INFO] running `"docker" "rm" "-f" "53b943ce4d36aa017da297f2de88f029fe90f5684e185938bb07003475af4f24"`
[INFO] [stdout] 53b943ce4d36aa017da297f2de88f029fe90f5684e185938bb07003475af4f24