[INFO] updating cached repository Regan-Koopmans/n-queens
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Regan-Koopmans/n-queens
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Regan-Koopmans/n-queens" "work/ex/clippy-test-run/sources/stable/gh/Regan-Koopmans/n-queens"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/Regan-Koopmans/n-queens'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Regan-Koopmans/n-queens" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Regan-Koopmans/n-queens"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Regan-Koopmans/n-queens'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] dd566835d4d2dafc2a1ee06490be44c4e502ade3
[INFO] sha for GitHub repo Regan-Koopmans/n-queens: dd566835d4d2dafc2a1ee06490be44c4e502ade3
[INFO] validating manifest of Regan-Koopmans/n-queens 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 Regan-Koopmans/n-queens 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 Regan-Koopmans/n-queens
[INFO] finished frobbing Regan-Koopmans/n-queens
[INFO] frobbed toml for Regan-Koopmans/n-queens written to work/ex/clippy-test-run/sources/stable/gh/Regan-Koopmans/n-queens/Cargo.toml
[INFO] started frobbing Regan-Koopmans/n-queens
[INFO] finished frobbing Regan-Koopmans/n-queens
[INFO] frobbed toml for Regan-Koopmans/n-queens written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Regan-Koopmans/n-queens/Cargo.toml
[INFO] crate Regan-Koopmans/n-queens 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 Regan-Koopmans/n-queens against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-7/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/Regan-Koopmans/n-queens:/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] c296b12914e56fc55e0901c46e2d731024e3088069d226614cf8410357603bef
[INFO] running `"docker" "start" "-a" "c296b12914e56fc55e0901c46e2d731024e3088069d226614cf8410357603bef"`
[INFO] [stderr]     Checking n-queens v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]    --> src/main.rs:123:9
[INFO] [stderr]     |
[INFO] [stderr] 123 |         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/main.rs:123:9
[INFO] [stderr]     |
[INFO] [stderr] 123 |         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: unused import: `std::process`
[INFO] [stderr]  --> src/main.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::process;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::process`
[INFO] [stderr]  --> src/main.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::process;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: equality checks against false can be replaced by a negation
[INFO] [stderr]   --> src/main.rs:32:51
[INFO] [stderr]    |
[INFO] [stderr] 32 |             if board[pos as usize] == y as u32 && count_row == false {
[INFO] [stderr]    |                                                   ^^^^^^^^^^^^^^^^^^ help: try simplifying it as shown: `!count_row`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::bool_comparison)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_comparison
[INFO] [stderr] 
[INFO] [stderr] warning: equality checks against false can be replaced by a negation
[INFO] [stderr]   --> src/main.rs:40:58
[INFO] [stderr]    |
[INFO] [stderr] 40 |             if board[pos as usize] as i32 == y - diff && count_diag_left == false {
[INFO] [stderr]    |                                                          ^^^^^^^^^^^^^^^^^^^^^^^^ help: try simplifying it as shown: `!count_diag_left`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_comparison
[INFO] [stderr] 
[INFO] [stderr] warning: equality checks against false can be replaced by a negation
[INFO] [stderr]   --> src/main.rs:44:58
[INFO] [stderr]    |
[INFO] [stderr] 44 |             if board[pos as usize] as i32 == y + diff && count_diag_right == false {
[INFO] [stderr]    |                                                          ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try simplifying it as shown: `!count_diag_right`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_comparison
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `x` is only used to index `board`.
[INFO] [stderr]    --> src/main.rs:114:14
[INFO] [stderr]     |
[INFO] [stderr] 114 |     for x in 0..len {
[INFO] [stderr]     |              ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::needless_range_loop)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]     |
[INFO] [stderr] 114 |     for <item> in board.iter().take(len) {
[INFO] [stderr]     |         ^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: equality checks against false can be replaced by a negation
[INFO] [stderr]   --> src/main.rs:32:51
[INFO] [stderr]    |
[INFO] [stderr] 32 |             if board[pos as usize] == y as u32 && count_row == false {
[INFO] [stderr]    |                                                   ^^^^^^^^^^^^^^^^^^ help: try simplifying it as shown: `!count_row`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::bool_comparison)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_comparison
[INFO] [stderr] 
[INFO] [stderr] warning: equality checks against false can be replaced by a negation
[INFO] [stderr]   --> src/main.rs:40:58
[INFO] [stderr]    |
[INFO] [stderr] 40 |             if board[pos as usize] as i32 == y - diff && count_diag_left == false {
[INFO] [stderr]    |                                                          ^^^^^^^^^^^^^^^^^^^^^^^^ help: try simplifying it as shown: `!count_diag_left`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_comparison
[INFO] [stderr] 
[INFO] [stderr] warning: equality checks against false can be replaced by a negation
[INFO] [stderr]   --> src/main.rs:44:58
[INFO] [stderr]    |
[INFO] [stderr] 44 |             if board[pos as usize] as i32 == y + diff && count_diag_right == false {
[INFO] [stderr]    |                                                          ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try simplifying it as shown: `!count_diag_right`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_comparison
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `x` is only used to index `board`.
[INFO] [stderr]    --> src/main.rs:114:14
[INFO] [stderr]     |
[INFO] [stderr] 114 |     for x in 0..len {
[INFO] [stderr]     |              ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::needless_range_loop)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]     |
[INFO] [stderr] 114 |     for <item> in board.iter().take(len) {
[INFO] [stderr]     |         ^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.76s
[INFO] running `"docker" "inspect" "c296b12914e56fc55e0901c46e2d731024e3088069d226614cf8410357603bef"`
[INFO] running `"docker" "rm" "-f" "c296b12914e56fc55e0901c46e2d731024e3088069d226614cf8410357603bef"`
[INFO] [stdout] c296b12914e56fc55e0901c46e2d731024e3088069d226614cf8410357603bef