[INFO] updating cached repository willemv/advent_of_code_rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/willemv/advent_of_code_rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/willemv/advent_of_code_rust" "work/ex/clippy-test-run/sources/stable/gh/willemv/advent_of_code_rust"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/willemv/advent_of_code_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/willemv/advent_of_code_rust" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/willemv/advent_of_code_rust"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/willemv/advent_of_code_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 76e62042b330b1201712782ba49ba31c97757292
[INFO] sha for GitHub repo willemv/advent_of_code_rust: 76e62042b330b1201712782ba49ba31c97757292
[INFO] validating manifest of willemv/advent_of_code_rust 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 willemv/advent_of_code_rust 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 willemv/advent_of_code_rust
[INFO] finished frobbing willemv/advent_of_code_rust
[INFO] frobbed toml for willemv/advent_of_code_rust written to work/ex/clippy-test-run/sources/stable/gh/willemv/advent_of_code_rust/Cargo.toml
[INFO] started frobbing willemv/advent_of_code_rust
[INFO] finished frobbing willemv/advent_of_code_rust
[INFO] frobbed toml for willemv/advent_of_code_rust written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/willemv/advent_of_code_rust/Cargo.toml
[INFO] crate willemv/advent_of_code_rust 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 willemv/advent_of_code_rust 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/willemv/advent_of_code_rust:/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] d2947ccf965ef03c2833e95b71a8a618a886dd8447f6dba5dc7ccaa2891b76f4
[INFO] running `"docker" "start" "-a" "d2947ccf965ef03c2833e95b71a8a618a886dd8447f6dba5dc7ccaa2891b76f4"`
[INFO] [stderr]     Checking iterslide v1.0.0
[INFO] [stderr]     Checking advent_of_code_rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]  --> src/day_one.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     return combination;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `combination`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/day_two.rs:19:13
[INFO] [stderr]    |
[INFO] [stderr] 19 |             return max - min;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `max - min`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]  --> src/day_one.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     return combination;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `combination`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/day_two.rs:19:13
[INFO] [stderr]    |
[INFO] [stderr] 19 |             return max - min;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `max - min`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/day_two.rs:15:46
[INFO] [stderr]    |
[INFO] [stderr] 15 |             let items: Vec<u32> = line.split("\t").map(|item| item.parse::<u32>().unwrap()).collect();
[INFO] [stderr]    |                                              ^^^^ help: try using a char instead: `'\t'`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_char_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: this .into_iter() call is equivalent to .iter() and will not move the Vec
[INFO] [stderr]   --> src/day_two.rs:17:32
[INFO] [stderr]    |
[INFO] [stderr] 17 |             let max = item_ref.into_iter().max().unwrap();
[INFO] [stderr]    |                                ^^^^^^^^^ help: call directly: `iter`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::into_iter_on_ref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#into_iter_on_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this .into_iter() call is equivalent to .iter() and will not move the Vec
[INFO] [stderr]   --> src/day_two.rs:18:32
[INFO] [stderr]    |
[INFO] [stderr] 18 |             let min = item_ref.into_iter().min().unwrap();
[INFO] [stderr]    |                                ^^^^^^^^^ help: call directly: `iter`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#into_iter_on_ref
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/day_two.rs:15:46
[INFO] [stderr]    |
[INFO] [stderr] 15 |             let items: Vec<u32> = line.split("\t").map(|item| item.parse::<u32>().unwrap()).collect();
[INFO] [stderr]    |                                              ^^^^ help: try using a char instead: `'\t'`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_char_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: this .into_iter() call is equivalent to .iter() and will not move the Vec
[INFO] [stderr]   --> src/day_two.rs:17:32
[INFO] [stderr]    |
[INFO] [stderr] 17 |             let max = item_ref.into_iter().max().unwrap();
[INFO] [stderr]    |                                ^^^^^^^^^ help: call directly: `iter`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::into_iter_on_ref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#into_iter_on_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this .into_iter() call is equivalent to .iter() and will not move the Vec
[INFO] [stderr]   --> src/day_two.rs:18:32
[INFO] [stderr]    |
[INFO] [stderr] 18 |             let min = item_ref.into_iter().min().unwrap();
[INFO] [stderr]    |                                ^^^^^^^^^ help: call directly: `iter`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#into_iter_on_ref
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.51s
[INFO] running `"docker" "inspect" "d2947ccf965ef03c2833e95b71a8a618a886dd8447f6dba5dc7ccaa2891b76f4"`
[INFO] running `"docker" "rm" "-f" "d2947ccf965ef03c2833e95b71a8a618a886dd8447f6dba5dc7ccaa2891b76f4"`
[INFO] [stdout] d2947ccf965ef03c2833e95b71a8a618a886dd8447f6dba5dc7ccaa2891b76f4