[INFO] updating cached repository gmadrid/hunt
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/gmadrid/hunt
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/gmadrid/hunt" "work/ex/clippy-test-run/sources/stable/gh/gmadrid/hunt"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/gmadrid/hunt'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/gmadrid/hunt" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/gmadrid/hunt"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/gmadrid/hunt'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 14df5827c274006a4a8691ed300a4044caee88ac
[INFO] sha for GitHub repo gmadrid/hunt: 14df5827c274006a4a8691ed300a4044caee88ac
[INFO] validating manifest of gmadrid/hunt 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 gmadrid/hunt 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 gmadrid/hunt
[INFO] finished frobbing gmadrid/hunt
[INFO] frobbed toml for gmadrid/hunt written to work/ex/clippy-test-run/sources/stable/gh/gmadrid/hunt/Cargo.toml
[INFO] started frobbing gmadrid/hunt
[INFO] finished frobbing gmadrid/hunt
[INFO] frobbed toml for gmadrid/hunt written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/gmadrid/hunt/Cargo.toml
[INFO] crate gmadrid/hunt 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 gmadrid/hunt against stable+rustflags=-Dclippy::into_iter_on_array for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-5/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/gmadrid/hunt:/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 -Dclippy::into_iter_on_array" "-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] 239ef7821260d7f54d4ea88d7e740a6313368cbfaee0402d6aa32eac55ddbfa0
[INFO] running `"docker" "start" "-a" "239ef7821260d7f54d4ea88d7e740a6313368cbfaee0402d6aa32eac55ddbfa0"`
[INFO] [stderr]     Checking clap v2.14.0
[INFO] [stderr]     Checking hunt v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/hunt/board.rs:83:7
[INFO] [stderr]    |
[INFO] [stderr] 83 |       possible_cells: possible_cells,
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `possible_cells`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/hunt/board.rs:84:7
[INFO] [stderr]    |
[INFO] [stderr] 84 |       dead_cells: dead_cells,
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `dead_cells`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/hunt/board.rs:98:24
[INFO] [stderr]    |
[INFO] [stderr] 98 |           print!("{}", ".");
[INFO] [stderr]    |                        ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::print_literal)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]    --> src/hunt/board.rs:101:7
[INFO] [stderr]     |
[INFO] [stderr] 101 |       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: redundant field names in struct initialization
[INFO] [stderr]   --> src/hunt/coord.rs:14:7
[INFO] [stderr]    |
[INFO] [stderr] 14 |       row: row,
[INFO] [stderr]    |       ^^^^^^^^ help: replace it with: `row`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/hunt/coord.rs:15:7
[INFO] [stderr]    |
[INFO] [stderr] 15 |       col: col,
[INFO] [stderr]    |       ^^^^^^^^ help: replace it with: `col`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]   --> src/main.rs:17:3
[INFO] [stderr]    |
[INFO] [stderr] 17 |   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/main.rs:21:3
[INFO] [stderr]    |
[INFO] [stderr] 21 |   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: redundant field names in struct initialization
[INFO] [stderr]   --> src/hunt/board.rs:83:7
[INFO] [stderr]    |
[INFO] [stderr] 83 |       possible_cells: possible_cells,
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `possible_cells`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/hunt/board.rs:84:7
[INFO] [stderr]    |
[INFO] [stderr] 84 |       dead_cells: dead_cells,
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `dead_cells`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/hunt/board.rs:98:24
[INFO] [stderr]    |
[INFO] [stderr] 98 |           print!("{}", ".");
[INFO] [stderr]    |                        ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::print_literal)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]    --> src/hunt/board.rs:101:7
[INFO] [stderr]     |
[INFO] [stderr] 101 |       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: redundant field names in struct initialization
[INFO] [stderr]   --> src/hunt/coord.rs:14:7
[INFO] [stderr]    |
[INFO] [stderr] 14 |       row: row,
[INFO] [stderr]    |       ^^^^^^^^ help: replace it with: `row`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/hunt/coord.rs:15:7
[INFO] [stderr]    |
[INFO] [stderr] 15 |       col: col,
[INFO] [stderr]    |       ^^^^^^^^ help: replace it with: `col`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]   --> src/main.rs:17:3
[INFO] [stderr]    |
[INFO] [stderr] 17 |   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/main.rs:21:3
[INFO] [stderr]    |
[INFO] [stderr] 21 |   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: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]    --> src/hunt/board.rs:22:9
[INFO] [stderr]     |
[INFO] [stderr] 22  |         b
[INFO] [stderr]     |         ^
[INFO] [stderr] ...
[INFO] [stderr] 231 |   let board = board!(3; 4; (1, 2), (2, 3), (0, 0));
[INFO] [stderr]     |               ------------------------------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::let_and_return)] on by default
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]    --> src/hunt/board.rs:21:17
[INFO] [stderr]     |
[INFO] [stderr] 21  |         let b = Board::new($rows, $cols, dead_cells);
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 231 |   let board = board!(3; 4; (1, 2), (2, 3), (0, 0));
[INFO] [stderr]     |               ------------------------------------ in this macro invocation
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]   --> src/hunt/board.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | / macro_rules! board {
[INFO] [stderr] 12 | |   ( $rows:expr ; $cols:expr) => { Board::new($rows, $cols, HashSet::<Coord>::new()) };
[INFO] [stderr] 13 | |     ( $rows:expr ; $cols:expr ; $($c:expr), *) => {
[INFO] [stderr] 14 | |       {
[INFO] [stderr] ...  |
[INFO] [stderr] 24 | |     }
[INFO] [stderr] 25 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_macros)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]    --> src/hunt/board.rs:170:1
[INFO] [stderr]     |
[INFO] [stderr] 170 | / macro_rules! assert_has_coords {
[INFO] [stderr] 171 | |     ( $coords:expr , $($c:expr), *) => {
[INFO] [stderr] 172 | |       {
[INFO] [stderr] 173 | |         let coord_set_in = HashSet::<Coord>::from_iter($coords.into_iter());
[INFO] [stderr] ...   |
[INFO] [stderr] 186 | |     }
[INFO] [stderr] 187 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/hunt/coord.rs:19:28
[INFO] [stderr]    |
[INFO] [stderr] 19 |   pub fn move_in_direction(&self, dir: Direction) -> Coord {
[INFO] [stderr]    |                            ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::trivially_copy_pass_by_ref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/hunt/coord.rs:19:28
[INFO] [stderr]    |
[INFO] [stderr] 19 |   pub fn move_in_direction(&self, dir: Direction) -> Coord {
[INFO] [stderr]    |                            ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::trivially_copy_pass_by_ref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.30s
[INFO] running `"docker" "inspect" "239ef7821260d7f54d4ea88d7e740a6313368cbfaee0402d6aa32eac55ddbfa0"`
[INFO] running `"docker" "rm" "-f" "239ef7821260d7f54d4ea88d7e740a6313368cbfaee0402d6aa32eac55ddbfa0"`
[INFO] [stdout] 239ef7821260d7f54d4ea88d7e740a6313368cbfaee0402d6aa32eac55ddbfa0