[INFO] updating cached repository jdekstrand/nqueens
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/jdekstrand/nqueens
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/jdekstrand/nqueens" "work/ex/clippy-test-run/sources/stable/gh/jdekstrand/nqueens"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/jdekstrand/nqueens'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/jdekstrand/nqueens" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/jdekstrand/nqueens"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/jdekstrand/nqueens'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 114f6903d049b59451d43d61407ef906e4b7840e
[INFO] sha for GitHub repo jdekstrand/nqueens: 114f6903d049b59451d43d61407ef906e4b7840e
[INFO] validating manifest of jdekstrand/nqueens 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 jdekstrand/nqueens 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 jdekstrand/nqueens
[INFO] finished frobbing jdekstrand/nqueens
[INFO] frobbed toml for jdekstrand/nqueens written to work/ex/clippy-test-run/sources/stable/gh/jdekstrand/nqueens/Cargo.toml
[INFO] started frobbing jdekstrand/nqueens
[INFO] finished frobbing jdekstrand/nqueens
[INFO] frobbed toml for jdekstrand/nqueens written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/jdekstrand/nqueens/Cargo.toml
[INFO] crate jdekstrand/nqueens 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 jdekstrand/nqueens against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-0/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/jdekstrand/nqueens:/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] 4fe9b67dfc15afc1f9ed11c544becc643713d33733458d4ab90d88c200a95d4a
[INFO] running `"docker" "start" "-a" "4fe9b67dfc15afc1f9ed11c544becc643713d33733458d4ab90d88c200a95d4a"`
[INFO] [stderr]     Checking nqueens v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]  --> src/main.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |         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:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |         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: the loop variable `a` is used to index `placed_queens`
[INFO] [stderr]  --> src/main.rs:3:18
[INFO] [stderr]   |
[INFO] [stderr] 3 |         for a in 0..placed_queens.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] 3 |         for (a, <item>) in placed_queens.iter().enumerate() {
[INFO] [stderr]   |             ^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `c` is used to index `open_ys`
[INFO] [stderr]   --> src/main.rs:13:14
[INFO] [stderr]    |
[INFO] [stderr] 13 |     for c in 0..open_ys.len() {
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[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] 13 |     for (c, <item>) in open_ys.iter().enumerate() {
[INFO] [stderr]    |         ^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `a` is used to index `placed_queens`
[INFO] [stderr]  --> src/main.rs:3:18
[INFO] [stderr]   |
[INFO] [stderr] 3 |         for a in 0..placed_queens.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] 3 |         for (a, <item>) in placed_queens.iter().enumerate() {
[INFO] [stderr]   |             ^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `c` is used to index `open_ys`
[INFO] [stderr]   --> src/main.rs:13:14
[INFO] [stderr]    |
[INFO] [stderr] 13 |     for c in 0..open_ys.len() {
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[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] 13 |     for (c, <item>) in open_ys.iter().enumerate() {
[INFO] [stderr]    |         ^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.75s
[INFO] running `"docker" "inspect" "4fe9b67dfc15afc1f9ed11c544becc643713d33733458d4ab90d88c200a95d4a"`
[INFO] running `"docker" "rm" "-f" "4fe9b67dfc15afc1f9ed11c544becc643713d33733458d4ab90d88c200a95d4a"`
[INFO] [stdout] 4fe9b67dfc15afc1f9ed11c544becc643713d33733458d4ab90d88c200a95d4a