[INFO] crate lib2048 0.0.2 is already in cache
[INFO] extracting crate lib2048 0.0.2 into work/ex/clippy-test-run/sources/stable/reg/lib2048/0.0.2
[INFO] extracting crate lib2048 0.0.2 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/lib2048/0.0.2
[INFO] validating manifest of lib2048-0.0.2 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 lib2048-0.0.2 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 lib2048-0.0.2
[INFO] finished frobbing lib2048-0.0.2
[INFO] frobbed toml for lib2048-0.0.2 written to work/ex/clippy-test-run/sources/stable/reg/lib2048/0.0.2/Cargo.toml
[INFO] started frobbing lib2048-0.0.2
[INFO] finished frobbing lib2048-0.0.2
[INFO] frobbed toml for lib2048-0.0.2 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/lib2048/0.0.2/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 lib2048-0.0.2 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/reg/lib2048/0.0.2:/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] 65dd8ff196b3829c82f965974c3d2a61f161d50f05a3d8892c02b531f990fa06
[INFO] running `"docker" "start" "-a" "65dd8ff196b3829c82f965974c3d2a61f161d50f05a3d8892c02b531f990fa06"`
[INFO] [stderr]     Checking lib2048 v0.0.2 (/opt/crater/workdir)
[INFO] [stderr] warning: 5th binding whose name is just one char
[INFO] [stderr]    --> src/lib.rs:203:9
[INFO] [stderr]     |
[INFO] [stderr] 203 |     let r = Display::Move {
[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: 5th binding whose name is just one char
[INFO] [stderr]    --> src/lib.rs:203:9
[INFO] [stderr]     |
[INFO] [stderr] 203 |     let r = Display::Move {
[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: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/lib.rs:128:19
[INFO] [stderr]     |
[INFO] [stderr] 128 | fn next_index(ct: &Control, ind: usize, &TilePos(rows, columns): &TilePos) -> Option<usize> {
[INFO] [stderr]     |                   ^^^^^^^^ help: consider passing by value instead: `Control`
[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/lib.rs:138:19
[INFO] [stderr]     |
[INFO] [stderr] 138 | fn each_start(ct: &Control, &TilePos(rows, columns): &TilePos) -> impl Iterator<Item = usize> {
[INFO] [stderr]     |                   ^^^^^^^^ help: consider passing by value instead: `Control`
[INFO] [stderr]     |
[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/lib.rs:150:42
[INFO] [stderr]     |
[INFO] [stderr] 150 | fn control_move(board: &mut Board, ctrl: &Control) -> Vec<Display> {
[INFO] [stderr]     |                                          ^^^^^^^^ help: consider passing by value instead: `Control`
[INFO] [stderr]     |
[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: You are using an explicit closure for cloning elements
[INFO] [stderr]    --> src/lib.rs:225:5
[INFO] [stderr]     |
[INFO] [stderr] 225 |     rand::thread_rng().choose(&available).map(|a| *a)
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: Consider calling the dedicated `cloned` method: `rand::thread_rng().choose(&available).cloned()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::map_clone)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_clone
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/lib.rs:128:19
[INFO] [stderr]     |
[INFO] [stderr] 128 | fn next_index(ct: &Control, ind: usize, &TilePos(rows, columns): &TilePos) -> Option<usize> {
[INFO] [stderr]     |                   ^^^^^^^^ help: consider passing by value instead: `Control`
[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/lib.rs:138:19
[INFO] [stderr]     |
[INFO] [stderr] 138 | fn each_start(ct: &Control, &TilePos(rows, columns): &TilePos) -> impl Iterator<Item = usize> {
[INFO] [stderr]     |                   ^^^^^^^^ help: consider passing by value instead: `Control`
[INFO] [stderr]     |
[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/lib.rs:150:42
[INFO] [stderr]     |
[INFO] [stderr] 150 | fn control_move(board: &mut Board, ctrl: &Control) -> Vec<Display> {
[INFO] [stderr]     |                                          ^^^^^^^^ help: consider passing by value instead: `Control`
[INFO] [stderr]     |
[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: You are using an explicit closure for cloning elements
[INFO] [stderr]    --> src/lib.rs:225:5
[INFO] [stderr]     |
[INFO] [stderr] 225 |     rand::thread_rng().choose(&available).map(|a| *a)
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: Consider calling the dedicated `cloned` method: `rand::thread_rng().choose(&available).cloned()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::map_clone)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_clone
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/lib.rs:455:34
[INFO] [stderr]     |
[INFO] [stderr] 455 |         fn check_contains(range: &Vec<(usize, usize)>, pos: TilePos) -> bool {
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^^^^^^^^ help: change this to: `&[(usize, usize)]`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.17s
[INFO] running `"docker" "inspect" "65dd8ff196b3829c82f965974c3d2a61f161d50f05a3d8892c02b531f990fa06"`
[INFO] running `"docker" "rm" "-f" "65dd8ff196b3829c82f965974c3d2a61f161d50f05a3d8892c02b531f990fa06"`
[INFO] [stdout] 65dd8ff196b3829c82f965974c3d2a61f161d50f05a3d8892c02b531f990fa06