[INFO] updating cached repository Leopard2A5/game-of-life
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Leopard2A5/game-of-life
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Leopard2A5/game-of-life" "work/ex/clippy-test-run/sources/stable/gh/Leopard2A5/game-of-life"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/Leopard2A5/game-of-life'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Leopard2A5/game-of-life" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Leopard2A5/game-of-life"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Leopard2A5/game-of-life'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 588aeb0a4d45fdd9c771f7d0916c8145bd6a9a7d
[INFO] sha for GitHub repo Leopard2A5/game-of-life: 588aeb0a4d45fdd9c771f7d0916c8145bd6a9a7d
[INFO] validating manifest of Leopard2A5/game-of-life 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 Leopard2A5/game-of-life 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 Leopard2A5/game-of-life
[INFO] finished frobbing Leopard2A5/game-of-life
[INFO] frobbed toml for Leopard2A5/game-of-life written to work/ex/clippy-test-run/sources/stable/gh/Leopard2A5/game-of-life/Cargo.toml
[INFO] started frobbing Leopard2A5/game-of-life
[INFO] finished frobbing Leopard2A5/game-of-life
[INFO] frobbed toml for Leopard2A5/game-of-life written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Leopard2A5/game-of-life/Cargo.toml
[INFO] crate Leopard2A5/game-of-life 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 Leopard2A5/game-of-life 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-2/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/Leopard2A5/game-of-life:/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] 7194d9a99a24550dbf75657432732b526cd7652b45a28da8555fa61dbd783898
[INFO] running `"docker" "start" "-a" "7194d9a99a24550dbf75657432732b526cd7652b45a28da8555fa61dbd783898"`
[INFO] [stderr]     Checking termion v1.1.4
[INFO] [stderr]     Checking game-of-life v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `to_char::ToChar`
[INFO] [stderr]  --> src/main.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use to_char::ToChar;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]  --> src/game_of_life.rs:8:20
[INFO] [stderr]   |
[INFO] [stderr] 8 |     pub fn to_char(&self) -> char {
[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: the loop variable `y` is used to index `new_field`
[INFO] [stderr]   --> src/game_of_life.rs:32:18
[INFO] [stderr]    |
[INFO] [stderr] 32 |         for y in 0..self.height() {
[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] 32 |         for (y, <item>) in new_field.iter_mut().enumerate().take(self.height()) {
[INFO] [stderr]    |             ^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `to_char::ToChar`
[INFO] [stderr]  --> src/main.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use to_char::ToChar;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]  --> src/game_of_life.rs:8:20
[INFO] [stderr]   |
[INFO] [stderr] 8 |     pub fn to_char(&self) -> char {
[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: the loop variable `y` is used to index `new_field`
[INFO] [stderr]   --> src/game_of_life.rs:32:18
[INFO] [stderr]    |
[INFO] [stderr] 32 |         for y in 0..self.height() {
[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] 32 |         for (y, <item>) in new_field.iter_mut().enumerate().take(self.height()) {
[INFO] [stderr]    |             ^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.87s
[INFO] running `"docker" "inspect" "7194d9a99a24550dbf75657432732b526cd7652b45a28da8555fa61dbd783898"`
[INFO] running `"docker" "rm" "-f" "7194d9a99a24550dbf75657432732b526cd7652b45a28da8555fa61dbd783898"`
[INFO] [stdout] 7194d9a99a24550dbf75657432732b526cd7652b45a28da8555fa61dbd783898