[INFO] crate spiral 0.1.9 is already in cache
[INFO] extracting crate spiral 0.1.9 into work/ex/clippy-test-run/sources/stable/reg/spiral/0.1.9
[INFO] extracting crate spiral 0.1.9 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/spiral/0.1.9
[INFO] validating manifest of spiral-0.1.9 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 spiral-0.1.9 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 spiral-0.1.9
[INFO] finished frobbing spiral-0.1.9
[INFO] frobbed toml for spiral-0.1.9 written to work/ex/clippy-test-run/sources/stable/reg/spiral/0.1.9/Cargo.toml
[INFO] started frobbing spiral-0.1.9
[INFO] finished frobbing spiral-0.1.9
[INFO] frobbed toml for spiral-0.1.9 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/spiral/0.1.9/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 spiral-0.1.9 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-4/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/spiral/0.1.9:/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] 72a0c6ebfa22972e77b7cbe5970ef57455cd05a38394b902373013118cac54c0
[INFO] running `"docker" "start" "-a" "72a0c6ebfa22972e77b7cbe5970ef57455cd05a38394b902373013118cac54c0"`
[INFO] [stderr]     Checking spiral v0.1.9 (/opt/crater/workdir)
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]    --> src/lib.rs:292:13
[INFO] [stderr]     |
[INFO] [stderr] 292 |             println!("");
[INFO] [stderr]     |             ^^^^^^^^^^^^ help: replace it with: `println!()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::println_empty_string)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stderr] 
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]    --> src/lib.rs:314:13
[INFO] [stderr]     |
[INFO] [stderr] 314 |             println!("");
[INFO] [stderr]     |             ^^^^^^^^^^^^ help: replace it with: `println!()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stderr] 
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]    --> src/lib.rs:292:13
[INFO] [stderr]     |
[INFO] [stderr] 292 |             println!("");
[INFO] [stderr]     |             ^^^^^^^^^^^^ help: replace it with: `println!()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::println_empty_string)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stderr] 
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]    --> src/lib.rs:314:13
[INFO] [stderr]     |
[INFO] [stderr] 314 |             println!("");
[INFO] [stderr]     |             ^^^^^^^^^^^^ help: replace it with: `println!()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stderr] 
[INFO] [stderr] warning: casting u16 to i32 may become silently lossy if types change
[INFO] [stderr]   --> src/lib.rs:93:27
[INFO] [stderr]    |
[INFO] [stderr] 93 |             max_distance: max_distance as i32,
[INFO] [stderr]    |                           ^^^^^^^^^^^^^^^^^^^ help: try: `i32::from(max_distance)`
[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 u16 to i32 may become silently lossy if types change
[INFO] [stderr]    --> src/lib.rs:197:27
[INFO] [stderr]     |
[INFO] [stderr] 197 |             max_distance: max_distance as i32,
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^^^ help: try: `i32::from(max_distance)`
[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 u16 to i32 may become silently lossy if types change
[INFO] [stderr]   --> src/lib.rs:93:27
[INFO] [stderr]    |
[INFO] [stderr] 93 |             max_distance: max_distance as i32,
[INFO] [stderr]    |                           ^^^^^^^^^^^^^^^^^^^ help: try: `i32::from(max_distance)`
[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 u16 to i32 may become silently lossy if types change
[INFO] [stderr]    --> src/lib.rs:197:27
[INFO] [stderr]     |
[INFO] [stderr] 197 |             max_distance: max_distance as i32,
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^^^ help: try: `i32::from(max_distance)`
[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 u16 to i32 may become silently lossy if types change
[INFO] [stderr]    --> src/lib.rs:321:32
[INFO] [stderr]     |
[INFO] [stderr] 321 |             let max_distance = (size + 1) as i32;
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^^ help: try: `i32::from(size + 1)`
[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 u16 to i32 may become silently lossy if types change
[INFO] [stderr]    --> src/lib.rs:332:32
[INFO] [stderr]     |
[INFO] [stderr] 332 |             let max_distance = (size + 1) as i32;
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^^ help: try: `i32::from(size + 1)`
[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: the variable `current` is used as a loop counter. Consider using `for (current, item) in ChebyshevIterator::new(2, 2, 3).enumerate()` or similar iterators
[INFO] [stderr]    --> src/lib.rs:383:23
[INFO] [stderr]     |
[INFO] [stderr] 383 |         for (x, y) in ChebyshevIterator::new(2, 2, 3) {
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::explicit_counter_loop)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_counter_loop
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> benches/benchmarks.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(test)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `spiral`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "72a0c6ebfa22972e77b7cbe5970ef57455cd05a38394b902373013118cac54c0"`
[INFO] running `"docker" "rm" "-f" "72a0c6ebfa22972e77b7cbe5970ef57455cd05a38394b902373013118cac54c0"`
[INFO] [stdout] 72a0c6ebfa22972e77b7cbe5970ef57455cd05a38394b902373013118cac54c0