[INFO] updating cached repository mookid/rust-adventofcode2017
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/mookid/rust-adventofcode2017
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/mookid/rust-adventofcode2017" "work/ex/clippy-test-run/sources/stable/gh/mookid/rust-adventofcode2017"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/mookid/rust-adventofcode2017'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mookid/rust-adventofcode2017" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/mookid/rust-adventofcode2017"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/mookid/rust-adventofcode2017'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 6b8300aacb3f428811d0d7aec97f699039a07fe3
[INFO] sha for GitHub repo mookid/rust-adventofcode2017: 6b8300aacb3f428811d0d7aec97f699039a07fe3
[INFO] validating manifest of mookid/rust-adventofcode2017 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 mookid/rust-adventofcode2017 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 mookid/rust-adventofcode2017
[INFO] finished frobbing mookid/rust-adventofcode2017
[INFO] frobbed toml for mookid/rust-adventofcode2017 written to work/ex/clippy-test-run/sources/stable/gh/mookid/rust-adventofcode2017/Cargo.toml
[INFO] started frobbing mookid/rust-adventofcode2017
[INFO] finished frobbing mookid/rust-adventofcode2017
[INFO] frobbed toml for mookid/rust-adventofcode2017 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/mookid/rust-adventofcode2017/Cargo.toml
[INFO] crate mookid/rust-adventofcode2017 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 mookid/rust-adventofcode2017 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/mookid/rust-adventofcode2017:/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] 8da5afa6f2044317b00fd3832a5bceba3614860e85d69cf60e7864ba6f798ec8
[INFO] running `"docker" "start" "-a" "8da5afa6f2044317b00fd3832a5bceba3614860e85d69cf60e7864ba6f798ec8"`
[INFO] [stderr]     Checking advent-of-code v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: use of `expect` followed by a function call
[INFO] [stderr]   --> src/lib.rs:20:10
[INFO] [stderr]    |
[INFO] [stderr] 20 |         .expect(("parse_from: ".to_owned() + &input.to_owned()).as_str())
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| { let msg = ("parse_from: ".to_owned() + &input.to_owned()).as_str(); panic!(msg) }))`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::expect_fun_call)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#expect_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to i32 may become silently lossy if types change
[INFO] [stderr]   --> src/lib.rs:64:51
[INFO] [stderr]    |
[INFO] [stderr] 64 |     let mut input = input.iter().cloned().map(|b| b as i32).collect::<Vec<_>>();
[INFO] [stderr]    |                                                   ^^^^^^^^ help: try: `i32::from(b)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: Constants have by default a `'static` lifetime
[INFO] [stderr]   --> src/day8-registers.rs:19:22
[INFO] [stderr]    |
[INFO] [stderr] 19 | const CMP_TABLE : [(&'static str, Cmp); 6] =
[INFO] [stderr]    |                     -^^^^^^^---- help: consider removing `'static`: `&str`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::const_static_lifetime)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime
[INFO] [stderr] 
[INFO] [stderr] warning: Constants have by default a `'static` lifetime
[INFO] [stderr]   --> src/day8-registers.rs:29:21
[INFO] [stderr]    |
[INFO] [stderr] 29 | const OP_TABLE : [(&'static str, Op); 2] =
[INFO] [stderr]    |                    -^^^^^^^---- help: consider removing `'static`: `&str`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime
[INFO] [stderr] 
[INFO] [stderr] warning: use of `expect` followed by a function call
[INFO] [stderr]   --> src/lib.rs:20:10
[INFO] [stderr]    |
[INFO] [stderr] 20 |         .expect(("parse_from: ".to_owned() + &input.to_owned()).as_str())
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| { let msg = ("parse_from: ".to_owned() + &input.to_owned()).as_str(); panic!(msg) }))`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::expect_fun_call)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#expect_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to i32 may become silently lossy if types change
[INFO] [stderr]   --> src/lib.rs:64:51
[INFO] [stderr]    |
[INFO] [stderr] 64 |     let mut input = input.iter().cloned().map(|b| b as i32).collect::<Vec<_>>();
[INFO] [stderr]    |                                                   ^^^^^^^^ help: try: `i32::from(b)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: use of `expect` followed by a function call
[INFO] [stderr]   --> src/lib.rs:20:10
[INFO] [stderr]    |
[INFO] [stderr] 20 |         .expect(("parse_from: ".to_owned() + &input.to_owned()).as_str())
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| { let msg = ("parse_from: ".to_owned() + &input.to_owned()).as_str(); panic!(msg) }))`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::expect_fun_call)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#expect_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to i32 may become silently lossy if types change
[INFO] [stderr]   --> src/lib.rs:64:51
[INFO] [stderr]    |
[INFO] [stderr] 64 |     let mut input = input.iter().cloned().map(|b| b as i32).collect::<Vec<_>>();
[INFO] [stderr]    |                                                   ^^^^^^^^ help: try: `i32::from(b)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[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/day8-registers.rs:59:34
[INFO] [stderr]    |
[INFO] [stderr] 59 | fn largest_register_value(input: &Vec<Item>, safe: bool) -> Option<i32> {
[INFO] [stderr]    |                                  ^^^^^^^^^^ help: change this to: `&[Item]`
[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] warning: this if statement can be collapsed
[INFO] [stderr]   --> src/day14-disk-defragmentation.rs:69:17
[INFO] [stderr]    |
[INFO] [stderr] 69 | /                 if to_2d(y).is_some() {
[INFO] [stderr] 70 | |                     if !visited[y] && grid[y] == b'1' {
[INFO] [stderr] 71 | |                         todo.extend_from_slice(&neighbours(y));
[INFO] [stderr] 72 | |                         visited[y] = true;
[INFO] [stderr] 73 | |                     }
[INFO] [stderr] 74 | |                 }
[INFO] [stderr]    | |_________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::collapsible_if)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]    |
[INFO] [stderr] 69 |                 if to_2d(y).is_some() && !visited[y] && grid[y] == b'1' {
[INFO] [stderr] 70 |     todo.extend_from_slice(&neighbours(y));
[INFO] [stderr] 71 |     visited[y] = true;
[INFO] [stderr] 72 | }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/day15-dueling-generators.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 34 |         factor: factor,
[INFO] [stderr]    |         ^^^^^^^^^^^^^^ help: replace it with: `factor`
[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: use of `expect` followed by a function call
[INFO] [stderr]   --> src/lib.rs:20:10
[INFO] [stderr]    |
[INFO] [stderr] 20 |         .expect(("parse_from: ".to_owned() + &input.to_owned()).as_str())
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| { let msg = ("parse_from: ".to_owned() + &input.to_owned()).as_str(); panic!(msg) }))`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::expect_fun_call)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#expect_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to i32 may become silently lossy if types change
[INFO] [stderr]   --> src/lib.rs:64:51
[INFO] [stderr]    |
[INFO] [stderr] 64 |     let mut input = input.iter().cloned().map(|b| b as i32).collect::<Vec<_>>();
[INFO] [stderr]    |                                                   ^^^^^^^^ help: try: `i32::from(b)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: use of `unwrap_or` followed by a function call
[INFO] [stderr]   --> src/day14-disk-defragmentation.rs:61:14
[INFO] [stderr]    |
[INFO] [stderr] 61 |             .unwrap_or(vec![])
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| vec![])`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::or_fun_call)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: You matched a field with a wildcard pattern. Consider using `..` instead
[INFO] [stderr]   --> src/day7-recursive-circus.rs:78:30
[INFO] [stderr]    |
[INFO] [stderr] 78 |              T {name: name2, nb: _, value: value2,})
[INFO] [stderr]    |                              ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::unneeded_field_pattern)] on by default
[INFO] [stderr]    = help: Try with `T { name: name2, value: value2, .. }`
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unneeded_field_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: use of `expect` followed by a function call
[INFO] [stderr]   --> src/lib.rs:20:10
[INFO] [stderr]    |
[INFO] [stderr] 20 |         .expect(("parse_from: ".to_owned() + &input.to_owned()).as_str())
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| { let msg = ("parse_from: ".to_owned() + &input.to_owned()).as_str(); panic!(msg) }))`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::expect_fun_call)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#expect_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to i32 may become silently lossy if types change
[INFO] [stderr]   --> src/lib.rs:64:51
[INFO] [stderr]    |
[INFO] [stderr] 64 |     let mut input = input.iter().cloned().map(|b| b as i32).collect::<Vec<_>>();
[INFO] [stderr]    |                                                   ^^^^^^^^ help: try: `i32::from(b)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]  --> src/day10-knot-hash.rs:4:36
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let input = input.trim().split(",").map(lib::parse_i32);
[INFO] [stderr]   |                                    ^^^ help: try using a char instead: `','`
[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: use of `expect` followed by a function call
[INFO] [stderr]   --> src/lib.rs:20:10
[INFO] [stderr]    |
[INFO] [stderr] 20 |         .expect(("parse_from: ".to_owned() + &input.to_owned()).as_str())
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| { let msg = ("parse_from: ".to_owned() + &input.to_owned()).as_str(); panic!(msg) }))`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::expect_fun_call)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#expect_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to i32 may become silently lossy if types change
[INFO] [stderr]   --> src/lib.rs:64:51
[INFO] [stderr]    |
[INFO] [stderr] 64 |     let mut input = input.iter().cloned().map(|b| b as i32).collect::<Vec<_>>();
[INFO] [stderr]    |                                                   ^^^^^^^^ help: try: `i32::from(b)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[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/day2-corruption-checksum.rs:22:25
[INFO] [stderr]    |
[INFO] [stderr] 22 | fn solve_line2(numbers: &Vec<i32>) -> Option<i32> {
[INFO] [stderr]    |                         ^^^^^^^^^ help: change this to: `&[i32]`
[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] warning: the loop variable `j` is used to index `numbers`
[INFO] [stderr]   --> src/day2-corruption-checksum.rs:26:18
[INFO] [stderr]    |
[INFO] [stderr] 26 |         for j in 0..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] 26 |         for (j, <item>) in numbers.iter().enumerate().take(len) {
[INFO] [stderr]    |             ^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: this loop could be written as a `for` loop
[INFO] [stderr]   --> src/day2-corruption-checksum.rs:51:25
[INFO] [stderr]    |
[INFO] [stderr] 51 |     while let Some(x) = iter.next() {
[INFO] [stderr]    |                         ^^^^^^^^^^^ help: try: `for x in iter { .. }`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::while_let_on_iterator)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#while_let_on_iterator
[INFO] [stderr] 
[INFO] [stderr] warning: use of `expect` followed by a function call
[INFO] [stderr]   --> src/lib.rs:20:10
[INFO] [stderr]    |
[INFO] [stderr] 20 |         .expect(("parse_from: ".to_owned() + &input.to_owned()).as_str())
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| { let msg = ("parse_from: ".to_owned() + &input.to_owned()).as_str(); panic!(msg) }))`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::expect_fun_call)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#expect_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to i32 may become silently lossy if types change
[INFO] [stderr]   --> src/lib.rs:64:51
[INFO] [stderr]    |
[INFO] [stderr] 64 |     let mut input = input.iter().cloned().map(|b| b as i32).collect::<Vec<_>>();
[INFO] [stderr]    |                                                   ^^^^^^^^ help: try: `i32::from(b)`
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/day15-dueling-generators.rs:26:37
[INFO] [stderr]    |
[INFO] [stderr] 26 |         let cur = ((factor * cur) % 2147483647) as i32;
[INFO] [stderr]    |                                     ^^^^^^^^^^ help: consider: `2_147_483_647`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::unreadable_literal)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/day7-recursive-circus.rs:19:58
[INFO] [stderr]    |
[INFO] [stderr] 19 |     let mut iter = line.split(is_delimiter).filter(|str| 0 < str.len());
[INFO] [stderr]    |                                                          ^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!str.is_empty()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::len_zero)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[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/day7-recursive-circus.rs:29:26
[INFO] [stderr]    |
[INFO] [stderr] 29 | fn find_root<'a>(items : &'a Vec<Item>) -> Option<&'a str> {
[INFO] [stderr]    |                          ^^^^^^^^^^^^^ help: change this to: `&[Item]`
[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] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/day7-recursive-circus.rs:38:29
[INFO] [stderr]    |
[INFO] [stderr] 38 | fn find_by_name<'a>(items : &'a Vec<Item>, x: &str) -> Option<&'a Item<'a>> {
[INFO] [stderr]    |                             ^^^^^^^^^^^^^ help: change this to: `&[Item]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[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/day7-recursive-circus.rs:43:28
[INFO] [stderr]    |
[INFO] [stderr] 43 |                    items : &'a Vec<Item>, name: &'a str) -> i32 {
[INFO] [stderr]    |                            ^^^^^^^^^^^^^ help: change this to: `&[Item]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[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/day7-recursive-circus.rs:62:33
[INFO] [stderr]    |
[INFO] [stderr] 62 | fn find_adjusted_weight(items : &Vec<Item>, root: &str) -> i32 {
[INFO] [stderr]    |                                 ^^^^^^^^^^ help: change this to: `&[Item]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: use of `expect` followed by a function call
[INFO] [stderr]   --> src/lib.rs:20:10
[INFO] [stderr]    |
[INFO] [stderr] 20 |         .expect(("parse_from: ".to_owned() + &input.to_owned()).as_str())
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| { let msg = ("parse_from: ".to_owned() + &input.to_owned()).as_str(); panic!(msg) }))`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::expect_fun_call)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#expect_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to i32 may become silently lossy if types change
[INFO] [stderr]   --> src/lib.rs:64:51
[INFO] [stderr]    |
[INFO] [stderr] 64 |     let mut input = input.iter().cloned().map(|b| b as i32).collect::<Vec<_>>();
[INFO] [stderr]    |                                                   ^^^^^^^^ help: try: `i32::from(b)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: use of `expect` followed by a function call
[INFO] [stderr]   --> src/lib.rs:20:10
[INFO] [stderr]    |
[INFO] [stderr] 20 |         .expect(("parse_from: ".to_owned() + &input.to_owned()).as_str())
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| { let msg = ("parse_from: ".to_owned() + &input.to_owned()).as_str(); panic!(msg) }))`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::expect_fun_call)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#expect_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to i32 may become silently lossy if types change
[INFO] [stderr]   --> src/lib.rs:64:51
[INFO] [stderr]    |
[INFO] [stderr] 64 |     let mut input = input.iter().cloned().map(|b| b as i32).collect::<Vec<_>>();
[INFO] [stderr]    |                                                   ^^^^^^^^ help: try: `i32::from(b)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]    --> src/day16-permutation-promenade.rs:112:36
[INFO] [stderr]     |
[INFO] [stderr] 112 |     let input = input.trim().split(",").map(|line| parse_line(line).unwrap()).collect::<Vec<_>>();
[INFO] [stderr]     |                                    ^^^ help: try using a char instead: `','`
[INFO] [stderr] warning: use of `expect` followed by a function call
[INFO] [stderr]   --> src/lib.rs:20:10
[INFO] [stderr]    |
[INFO] [stderr] 20 |         .expect(("parse_from: ".to_owned() + &input.to_owned()).as_str())
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| { let msg = ("parse_from: ".to_owned() + &input.to_owned()).as_str(); panic!(msg) }))`
[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]    |
[INFO] [stderr]    = note: #[warn(clippy::expect_fun_call)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#expect_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to i32 may become silently lossy if types change
[INFO] [stderr]   --> src/lib.rs:64:51
[INFO] [stderr]    |
[INFO] [stderr] 64 |     let mut input = input.iter().cloned().map(|b| b as i32).collect::<Vec<_>>();
[INFO] [stderr]    |                                                   ^^^^^^^^ help: try: `i32::from(b)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] error: this .into_iter() call is equivalent to .iter() and will not move the array
[INFO] [stderr]   --> src/day3-spiral-memory.rs:20:55
[INFO] [stderr]    |
[INFO] [stderr] 20 |                       CornerKind::DL, CornerKind::DR].into_iter() {
[INFO] [stderr]    |                                                       ^^^^^^^^^ help: call directly: `iter`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[deny(clippy::into_iter_on_array)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#into_iter_on_array
[INFO] [stderr] 
[INFO] [stderr] error: this loop never actually loops
[INFO] [stderr]   --> src/day3-spiral-memory.rs:64:5
[INFO] [stderr]    |
[INFO] [stderr] 64 | /     for i in 2.. {
[INFO] [stderr] 65 | |         let cur = manhattan_from_linear(i);
[INFO] [stderr] 66 | |         let (x,y) = cur;
[INFO] [stderr] 67 | |         let res = [(x-1, y-1), (x-1, y+0), (x-1, y+1),
[INFO] [stderr] ...  |
[INFO] [stderr] 74 | |         tbl.insert(cur, res);
[INFO] [stderr] 75 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[deny(clippy::never_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#never_loop
[INFO] [stderr] 
[INFO] [stderr] error: this .into_iter() call is equivalent to .iter() and will not move the array
[INFO] [stderr]   --> src/day3-spiral-memory.rs:70:14
[INFO] [stderr]    |
[INFO] [stderr] 70 |             .into_iter()
[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_array
[INFO] [stderr] 
[INFO] [stderr] warning: the operation is ineffective. Consider reducing it to `y`
[INFO] [stderr]   --> src/day3-spiral-memory.rs:67:38
[INFO] [stderr]    |
[INFO] [stderr] 67 |         let res = [(x-1, y-1), (x-1, y+0), (x-1, y+1),
[INFO] [stderr]    |                                      ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::identity_op)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_op
[INFO] [stderr] 
[INFO] [stderr] warning: the operation is ineffective. Consider reducing it to `x`
[INFO] [stderr]   --> src/day3-spiral-memory.rs:68:21
[INFO] [stderr]    |
[INFO] [stderr] 68 |                    (x+0, y-1), (x+0, y+1),
[INFO] [stderr]    |                     ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_op
[INFO] [stderr] 
[INFO] [stderr] warning: the operation is ineffective. Consider reducing it to `x`
[INFO] [stderr]   --> src/day3-spiral-memory.rs:68:33
[INFO] [stderr]    |
[INFO] [stderr] 68 |                    (x+0, y-1), (x+0, y+1),
[INFO] [stderr]    |                                 ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_op
[INFO] [stderr] 
[INFO] [stderr] warning: the operation is ineffective. Consider reducing it to `y`
[INFO] [stderr]   --> src/day3-spiral-memory.rs:69:38
[INFO] [stderr]    |
[INFO] [stderr] 69 |                    (x+1, y-1), (x+1, y+0), (x+1, y+1)]
[INFO] [stderr]    |                                      ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_op
[INFO] [stderr] 
[INFO] [stderr] warning: unused logical operation that must be used
[INFO] [stderr]   --> src/day3-spiral-memory.rs:73:9
[INFO] [stderr]    |
[INFO] [stderr] 73 |         n < res && return res;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: boolean short circuit operator in statement may be clearer using an explicit test
[INFO] [stderr]   --> src/day3-spiral-memory.rs:73:9
[INFO] [stderr]    |
[INFO] [stderr] 73 |         n < res && return res;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `if n < res { return res; }`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::short_circuit_statement)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#short_circuit_statement
[INFO] [stderr] 
[INFO] [stderr] warning: sub-expression diverges
[INFO] [stderr]   --> src/day3-spiral-memory.rs:73:20
[INFO] [stderr]    |
[INFO] [stderr] 73 |         n < res && return res;
[INFO] [stderr]    |                    ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::diverging_sub_expression)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#diverging_sub_expression
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `advent-of-code`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/day22-virus.rs:26:39
[INFO] [stderr]    |
[INFO] [stderr] 26 |     println!("{}", nb_infections(map, 10000000, true));
[INFO] [stderr]    |                                       ^^^^^^^^ help: consider: `10_000_000`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::unreadable_literal)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: Constants have by default a `'static` lifetime
[INFO] [stderr]   --> src/day8-registers.rs:19:22
[INFO] [stderr]    |
[INFO] [stderr] 19 | const CMP_TABLE : [(&'static str, Cmp); 6] =
[INFO] [stderr]    |                     -^^^^^^^---- help: consider removing `'static`: `&str`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::const_static_lifetime)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime
[INFO] [stderr] 
[INFO] [stderr] warning: Constants have by default a `'static` lifetime
[INFO] [stderr]   --> src/day8-registers.rs:29:21
[INFO] [stderr]    |
[INFO] [stderr] 29 | const OP_TABLE : [(&'static str, Op); 2] =
[INFO] [stderr]    |                    -^^^^^^^---- help: consider removing `'static`: `&str`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime
[INFO] [stderr] 
[INFO] [stderr] warning: use of `expect` followed by a function call
[INFO] [stderr]   --> src/lib.rs:20:10
[INFO] [stderr]    |
[INFO] [stderr] 20 |         .expect(("parse_from: ".to_owned() + &input.to_owned()).as_str())
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| { let msg = ("parse_from: ".to_owned() + &input.to_owned()).as_str(); panic!(msg) }))`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::expect_fun_call)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#expect_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to i32 may become silently lossy if types change
[INFO] [stderr]   --> src/lib.rs:64:51
[INFO] [stderr]    |
[INFO] [stderr] 64 |     let mut input = input.iter().cloned().map(|b| b as i32).collect::<Vec<_>>();
[INFO] [stderr]    |                                                   ^^^^^^^^ help: try: `i32::from(b)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[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/day5-twisty-trampolines.rs:11:15
[INFO] [stderr]    |
[INFO] [stderr] 11 | fn solve(ns : &Vec<i32>, complex_jump: bool) -> i32 {
[INFO] [stderr]    |               ^^^^^^^^^
[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] help: change this to
[INFO] [stderr]    |
[INFO] [stderr] 11 | fn solve(ns : &[i32], complex_jump: bool) -> i32 {
[INFO] [stderr]    |               ^^^^^^
[INFO] [stderr] help: change `ns.clone()` to
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let mut ns = ns.to_owned();
[INFO] [stderr]    |                  ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of `expect` followed by a function call
[INFO] [stderr]   --> src/lib.rs:20:10
[INFO] [stderr]    |
[INFO] [stderr] 20 |         .expect(("parse_from: ".to_owned() + &input.to_owned()).as_str())
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| { let msg = ("parse_from: ".to_owned() + &input.to_owned()).as_str(); panic!(msg) }))`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::expect_fun_call)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#expect_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to i32 may become silently lossy if types change
[INFO] [stderr]   --> src/lib.rs:64:51
[INFO] [stderr]    |
[INFO] [stderr] 64 |     let mut input = input.iter().cloned().map(|b| b as i32).collect::<Vec<_>>();
[INFO] [stderr]    |                                                   ^^^^^^^^ help: try: `i32::from(b)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[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/day8-registers.rs:59:34
[INFO] [stderr]    |
[INFO] [stderr] 59 | fn largest_register_value(input: &Vec<Item>, safe: bool) -> Option<i32> {
[INFO] [stderr]    |                                  ^^^^^^^^^^ help: change this to: `&[Item]`
[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] warning: use of `expect` followed by a function call
[INFO] [stderr]   --> src/lib.rs:20:10
[INFO] [stderr]    |
[INFO] [stderr] 20 |         .expect(("parse_from: ".to_owned() + &input.to_owned()).as_str())
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| { let msg = ("parse_from: ".to_owned() + &input.to_owned()).as_str(); panic!(msg) }))`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::expect_fun_call)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#expect_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to i32 may become silently lossy if types change
[INFO] [stderr]   --> src/lib.rs:64:51
[INFO] [stderr]    |
[INFO] [stderr] 64 |     let mut input = input.iter().cloned().map(|b| b as i32).collect::<Vec<_>>();
[INFO] [stderr]    |                                                   ^^^^^^^^ help: try: `i32::from(b)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/day22-virus.rs:68:13
[INFO] [stderr]    |
[INFO] [stderr] 68 | /             match ch {
[INFO] [stderr] 69 | |                 &b'.' => (),
[INFO] [stderr] 70 | |                 &b'#' => v.push((i as i32, j as i32)),
[INFO] [stderr] 71 | |                 &c => panic!("unexpected character: {}", c),
[INFO] [stderr] 72 | |             }
[INFO] [stderr]    | |_____________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::match_ref_pats)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]    |
[INFO] [stderr] 68 |             match *ch {
[INFO] [stderr] 69 |                 b'.' => (),
[INFO] [stderr] 70 |                 b'#' => v.push((i as i32, j as i32)),
[INFO] [stderr] 71 |                 c => panic!("unexpected character: {}", c),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: use of `expect` followed by a function call
[INFO] [stderr]   --> src/lib.rs:20:10
[INFO] [stderr]    |
[INFO] [stderr] 20 |         .expect(("parse_from: ".to_owned() + &input.to_owned()).as_str())
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| { let msg = ("parse_from: ".to_owned() + &input.to_owned()).as_str(); panic!(msg) }))`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::expect_fun_call)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#expect_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to i32 may become silently lossy if types change
[INFO] [stderr]   --> src/lib.rs:64:51
[INFO] [stderr]    |
[INFO] [stderr] 64 |     let mut input = input.iter().cloned().map(|b| b as i32).collect::<Vec<_>>();
[INFO] [stderr]    |                                                   ^^^^^^^^ help: try: `i32::from(b)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]   --> src/day17-spinlock.rs:31:16
[INFO] [stderr]    |
[INFO] [stderr] 31 |     find_after((1..nb_reps+1).fold(new(), |st, i| insert(advance(st, nsteps), i)), target)
[INFO] [stderr]    |                ^^^^^^^^^^^^^^ help: use: `(1..=nb_reps)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::range_plus_one)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: use of `expect` followed by a function call
[INFO] [stderr]   --> src/lib.rs:20:10
[INFO] [stderr]    |
[INFO] [stderr] 20 |         .expect(("parse_from: ".to_owned() + &input.to_owned()).as_str())
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| { let msg = ("parse_from: ".to_owned() + &input.to_owned()).as_str(); panic!(msg) }))`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::expect_fun_call)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#expect_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to i32 may become silently lossy if types change
[INFO] [stderr]   --> src/lib.rs:64:51
[INFO] [stderr]    |
[INFO] [stderr] 64 |     let mut input = input.iter().cloned().map(|b| b as i32).collect::<Vec<_>>();
[INFO] [stderr]    |                                                   ^^^^^^^^ help: try: `i32::from(b)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: use of `expect` followed by a function call
[INFO] [stderr]   --> src/lib.rs:20:10
[INFO] [stderr]    |
[INFO] [stderr] 20 |         .expect(("parse_from: ".to_owned() + &input.to_owned()).as_str())
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| { let msg = ("parse_from: ".to_owned() + &input.to_owned()).as_str(); panic!(msg) }))`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::expect_fun_call)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#expect_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to i32 may become silently lossy if types change
[INFO] [stderr]   --> src/lib.rs:64:51
[INFO] [stderr]    |
[INFO] [stderr] 64 |     let mut input = input.iter().cloned().map(|b| b as i32).collect::<Vec<_>>();
[INFO] [stderr]    |                                                   ^^^^^^^^ help: try: `i32::from(b)`
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/day21-fractal.rs:97:35
[INFO] [stderr]    |
[INFO] [stderr] 97 |         for (i, row) in str.split("/").enumerate() {
[INFO] [stderr]    |                                   ^^^ help: try using a char instead: `'/'`
[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]    |
[INFO] [stderr]    = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]  --> src/day6-memory-reallocation.rs:7:14
[INFO] [stderr]   |
[INFO] [stderr] 7 |     for i in idx_max + 1 .. idx_max + k + 1 {
[INFO] [stderr]   |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `idx_max + 1..=idx_max + k`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::range_plus_one)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[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/day6-memory-reallocation.rs:13:19
[INFO] [stderr]    |
[INFO] [stderr] 13 | fn solve(blocks : &Vec<i32>, loop_size: bool) -> Option<i32> {
[INFO] [stderr]    |                   ^^^^^^^^^
[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] help: change this to
[INFO] [stderr]    |
[INFO] [stderr] 13 | fn solve(blocks : &[i32], loop_size: bool) -> Option<i32> {
[INFO] [stderr]    |                   ^^^^^^
[INFO] [stderr] help: change `blocks.clone()` to
[INFO] [stderr]    |
[INFO] [stderr] 14 |     let mut blocks = blocks.to_owned();
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]   --> src/day6-memory-reallocation.rs:17:9
[INFO] [stderr]    |
[INFO] [stderr] 17 | /         match tbl.insert(blocks.clone(), i) {
[INFO] [stderr] 18 | |             Some(first_encounter) =>
[INFO] [stderr] 19 | |                 return Some(if loop_size {
[INFO] [stderr] 20 | |                     i - first_encounter
[INFO] [stderr] ...  |
[INFO] [stderr] 24 | |             None => (),
[INFO] [stderr] 25 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 17 |         if let Some(first_encounter) = tbl.insert(blocks.clone(), i) { return Some(if loop_size {
[INFO] [stderr] 18 |     i - first_encounter
[INFO] [stderr] 19 | } else {
[INFO] [stderr] 20 |     i
[INFO] [stderr] 21 | }) }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: use of `expect` followed by a function call
[INFO] [stderr]   --> src/lib.rs:20:10
[INFO] [stderr]    |
[INFO] [stderr] 20 |         .expect(("parse_from: ".to_owned() + &input.to_owned()).as_str())
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| { let msg = ("parse_from: ".to_owned() + &input.to_owned()).as_str(); panic!(msg) }))`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::expect_fun_call)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#expect_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to i32 may become silently lossy if types change
[INFO] [stderr]   --> src/lib.rs:64:51
[INFO] [stderr]    |
[INFO] [stderr] 64 |     let mut input = input.iter().cloned().map(|b| b as i32).collect::<Vec<_>>();
[INFO] [stderr]    |                                                   ^^^^^^^^ help: try: `i32::from(b)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]    --> src/day16-permutation-promenade.rs:112:36
[INFO] [stderr]     |
[INFO] [stderr] 112 |     let input = input.trim().split(",").map(|line| parse_line(line).unwrap()).collect::<Vec<_>>();
[INFO] [stderr]     |                                    ^^^ help: try using a char instead: `','`
[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] error: build failed
[INFO] running `"docker" "inspect" "8da5afa6f2044317b00fd3832a5bceba3614860e85d69cf60e7864ba6f798ec8"`
[INFO] running `"docker" "rm" "-f" "8da5afa6f2044317b00fd3832a5bceba3614860e85d69cf60e7864ba6f798ec8"`
[INFO] [stdout] 8da5afa6f2044317b00fd3832a5bceba3614860e85d69cf60e7864ba6f798ec8