[INFO] cloning repository https://github.com/semeniuta/aoc2024
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/semeniuta/aoc2024" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsemeniuta%2Faoc2024", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsemeniuta%2Faoc2024'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6c84309cbeb1c89c99422bbdce2efcfa57c46fee
[INFO] linting semeniuta/aoc2024 against nightly for clippy-nonminimal_bool-denied
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsemeniuta%2Faoc2024" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/semeniuta/aoc2024
[INFO] finished tweaking git repo https://github.com/semeniuta/aoc2024
[INFO] tweaked toml for git repo https://github.com/semeniuta/aoc2024 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/semeniuta/aoc2024 on toolchain nightly
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/semeniuta/aoc2024 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 797a076cad2d4c41fc9de2896bd300f6003c970391d379216485cb2604f3a0e4
[INFO] running `Command { std: "docker" "start" "-a" "797a076cad2d4c41fc9de2896bd300f6003c970391d379216485cb2604f3a0e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "797a076cad2d4c41fc9de2896bd300f6003c970391d379216485cb2604f3a0e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "797a076cad2d4c41fc9de2896bd300f6003c970391d379216485cb2604f3a0e4", kill_on_drop: false }`
[INFO] [stdout] 797a076cad2d4c41fc9de2896bd300f6003c970391d379216485cb2604f3a0e4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "clippy" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 49a7f98fb15cab6cb097b0d2f1967ebca7862a7f1c0e58ab9fef435498ebbb3c
[INFO] running `Command { std: "docker" "start" "-a" "49a7f98fb15cab6cb097b0d2f1967ebca7862a7f1c0e58ab9fef435498ebbb3c", kill_on_drop: false }`
[INFO] [stderr]     Checking common v0.1.0 (/opt/rustwide/workdir/common)
[INFO] [stderr]     Checking array2d v0.3.2
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> common/src/lib.rs:22:13
[INFO] [stdout]    |
[INFO] [stdout] 22 |             return lines;
[INFO] [stdout]    |             ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout]    = note: `#[warn(clippy::needless_return)]` on by default
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 22 ~             lines
[INFO] [stdout] 23 |         }
[INFO] [stdout] ...
[INFO] [stdout] 27 |         }
[INFO] [stdout] 28 ~     }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> common/src/lib.rs:26:13
[INFO] [stdout]    |
[INFO] [stdout] 26 |             return Vec::new();
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 26 ~             Vec::new()
[INFO] [stdout] 27 |         }
[INFO] [stdout] 28 ~     }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]   --> common/src/lib.rs:31:38
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub fn lines_to_grid_of_chars(lines: &Vec<String>) -> Vec<Vec<char>> {
[INFO] [stdout]    |                                      ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout]    = note: `#[warn(clippy::ptr_arg)]` on by default
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 31 - pub fn lines_to_grid_of_chars(lines: &Vec<String>) -> Vec<Vec<char>> {
[INFO] [stdout] 31 + pub fn lines_to_grid_of_chars(lines: &[String]) -> Vec<Vec<char>> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> common/src/lib.rs:22:13
[INFO] [stdout]    |
[INFO] [stdout] 22 |             return lines;
[INFO] [stdout]    |             ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout]    = note: `#[warn(clippy::needless_return)]` on by default
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 22 ~             lines
[INFO] [stdout] 23 |         }
[INFO] [stdout] ...
[INFO] [stdout] 27 |         }
[INFO] [stdout] 28 ~     }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> common/src/lib.rs:26:13
[INFO] [stdout]    |
[INFO] [stdout] 26 |             return Vec::new();
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 26 ~             Vec::new()
[INFO] [stdout] 27 |         }
[INFO] [stdout] 28 ~     }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]   --> common/src/lib.rs:31:38
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub fn lines_to_grid_of_chars(lines: &Vec<String>) -> Vec<Vec<char>> {
[INFO] [stdout]    |                                      ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout]    = note: `#[warn(clippy::ptr_arg)]` on by default
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 31 - pub fn lines_to_grid_of_chars(lines: &Vec<String>) -> Vec<Vec<char>> {
[INFO] [stdout] 31 + pub fn lines_to_grid_of_chars(lines: &[String]) -> Vec<Vec<char>> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking day_02 v0.1.0 (/opt/rustwide/workdir/day_02)
[INFO] [stderr]     Checking day_07 v0.1.0 (/opt/rustwide/workdir/day_07)
[INFO] [stderr]     Checking day_05 v0.1.0 (/opt/rustwide/workdir/day_05)
[INFO] [stderr]     Checking day_03 v0.1.0 (/opt/rustwide/workdir/day_03)
[INFO] [stderr]     Checking day_01 v0.1.0 (/opt/rustwide/workdir/day_01)
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]   --> day_05/src/main.rs:17:26
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn from_lines(lines: &Vec<String>) -> Self {
[INFO] [stdout]    |                          ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout]    = note: `#[warn(clippy::ptr_arg)]` on by default
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 17 -     fn from_lines(lines: &Vec<String>) -> Self {
[INFO] [stdout] 17 +     fn from_lines(lines: &[String]) -> Self {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]   --> day_05/src/main.rs:29:52
[INFO] [stdout]    |
[INFO] [stdout] 29 |                 let nums: Vec<i32> = parse_numbers(&line, "|");
[INFO] [stdout]    |                                                    ^^^^^ help: change this to: `line`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout]    = note: `#[warn(clippy::needless_borrow)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]   --> day_05/src/main.rs:33:48
[INFO] [stdout]    |
[INFO] [stdout] 33 |                 if let Some(s) = rules.get_mut(&a) {
[INFO] [stdout]    |                                                ^^ help: change this to: `a`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `clone` on type `i32` which implements the `Copy` trait
[INFO] [stdout]   --> day_05/src/main.rs:34:30
[INFO] [stdout]    |
[INFO] [stdout] 34 |                     s.insert(b.clone());
[INFO] [stdout]    |                              ^^^^^^^^^ help: try dereferencing it: `*b`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stdout]    = note: `#[warn(clippy::clone_on_copy)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `clone` on type `i32` which implements the `Copy` trait
[INFO] [stdout]   --> day_05/src/main.rs:36:34
[INFO] [stdout]    |
[INFO] [stdout] 36 |                     rules.insert(a.clone(), HashSet::from([b.clone()]));
[INFO] [stdout]    |                                  ^^^^^^^^^ help: try dereferencing it: `*a`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `clone` on type `i32` which implements the `Copy` trait
[INFO] [stdout]   --> day_05/src/main.rs:36:60
[INFO] [stdout]    |
[INFO] [stdout] 36 |                     rules.insert(a.clone(), HashSet::from([b.clone()]));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: try dereferencing it: `*b`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]   --> day_05/src/main.rs:39:46
[INFO] [stdout]    |
[INFO] [stdout] 39 |                 sequences.push(parse_numbers(&line, ","));
[INFO] [stdout]    |                                              ^^^^^ help: change this to: `line`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]   --> day_05/src/main.rs:51:20
[INFO] [stdout]    |
[INFO] [stdout] 51 |         if is_good(&seq, &data.rules) {
[INFO] [stdout]    |                    ^^^^ help: change this to: `seq`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]   --> day_05/src/main.rs:60:18
[INFO] [stdout]    |
[INFO] [stdout] 60 | fn is_good(nums: &Vec<i32>, rules: &HashMap<i32, HashSet<i32>>) -> bool {
[INFO] [stdout]    |                  ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 60 - fn is_good(nums: &Vec<i32>, rules: &HashMap<i32, HashSet<i32>>) -> bool {
[INFO] [stdout] 60 + fn is_good(nums: &[i32], rules: &HashMap<i32, HashSet<i32>>) -> bool {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]   --> day_02/src/main.rs:11:25
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn count_safe<F>(lines: &Vec<String>, is_safe_predicate: F) -> i32
[INFO] [stdout]    |                         ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout]    = note: `#[warn(clippy::ptr_arg)]` on by default
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 11 - fn count_safe<F>(lines: &Vec<String>, is_safe_predicate: F) -> i32
[INFO] [stdout] 11 + fn count_safe<F>(lines: &[String], is_safe_predicate: F) -> i32
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]   --> day_02/src/main.rs:18:33
[INFO] [stdout]    |
[INFO] [stdout] 18 |         let levels = parse_line(&line);
[INFO] [stdout]    |                                 ^^^^^ help: change this to: `line`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout]    = note: `#[warn(clippy::needless_borrow)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]   --> day_02/src/main.rs:43:20
[INFO] [stdout]    |
[INFO] [stdout] 43 | fn is_safe(levels: &Vec<i32>) -> bool {
[INFO] [stdout]    |                    ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 43 - fn is_safe(levels: &Vec<i32>) -> bool {
[INFO] [stdout] 43 + fn is_safe(levels: &[i32]) -> bool {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `.into_iter()` call is equivalent to `.iter()` and will not consume the `Vec`
[INFO] [stdout]   --> day_02/src/main.rs:56:14
[INFO] [stdout]    |
[INFO] [stdout] 56 |             .into_iter()
[INFO] [stdout]    |              ^^^^^^^^^ help: call directly: `iter`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#into_iter_on_ref
[INFO] [stdout]    = note: `#[warn(clippy::into_iter_on_ref)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `clone` on type `i32` which implements the `Copy` trait
[INFO] [stdout]   --> day_02/src/main.rs:59:31
[INFO] [stdout]    |
[INFO] [stdout] 59 |             .map(|(_, value)| value.clone())
[INFO] [stdout]    |                               ^^^^^^^^^^^^^ help: try dereferencing it: `*value`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stdout]    = note: `#[warn(clippy::clone_on_copy)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: match can be simplified with `.unwrap_or_default()`
[INFO] [stdout]   --> day_07/src/main.rs:24:31
[INFO] [stdout]    |
[INFO] [stdout] 24 |           Operator::Multiply => match a.checked_mul(b) {
[INFO] [stdout]    |  _______________________________^
[INFO] [stdout] 25 | |             Some(val) => val,
[INFO] [stdout] 26 | |             None => 0,
[INFO] [stdout] 27 | |         },
[INFO] [stdout]    | |_________^ help: replace it with: `a.checked_mul(b).unwrap_or_default()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_unwrap_or_default
[INFO] [stdout]    = note: `#[warn(clippy::manual_unwrap_or_default)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]   --> day_07/src/main.rs:33:17
[INFO] [stdout]    |
[INFO] [stdout] 33 |     components: &Vec<i64>,
[INFO] [stdout]    |                 ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout]    = note: `#[warn(clippy::ptr_arg)]` on by default
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 33 -     components: &Vec<i64>,
[INFO] [stdout] 33 +     components: &[i64],
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `i` is only used to index `op_sequences`
[INFO] [stdout]   --> day_07/src/main.rs:41:14
[INFO] [stdout]    |
[INFO] [stdout] 41 |     for i in 0..op_sequences.len() {
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stdout]    = note: `#[warn(clippy::needless_range_loop)]` on by default
[INFO] [stdout] help: consider using an iterator
[INFO] [stdout]    |
[INFO] [stdout] 41 -     for i in 0..op_sequences.len() {
[INFO] [stdout] 41 +     for <item> in &op_sequences {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]   --> day_01/src/main.rs:30:37
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn find_similarity_score(numbers_1: &Vec<i32>, numbers_2: &Vec<i32>) -> i32 {
[INFO] [stdout]    |                                     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout]    = note: `#[warn(clippy::ptr_arg)]` on by default
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 30 - fn find_similarity_score(numbers_1: &Vec<i32>, numbers_2: &Vec<i32>) -> i32 {
[INFO] [stdout] 30 + fn find_similarity_score(numbers_1: &[i32], numbers_2: &Vec<i32>) -> i32 {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]   --> day_07/src/main.rs:56:16
[INFO] [stdout]    |
[INFO] [stdout] 56 | fn get_op(seq: &Vec<Option<Operator>>, index: usize) -> Operator {
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 56 - fn get_op(seq: &Vec<Option<Operator>>, index: usize) -> Operator {
[INFO] [stdout] 56 + fn get_op(seq: &[Option<Operator>], index: usize) -> Operator {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]   --> day_01/src/main.rs:30:59
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn find_similarity_score(numbers_1: &Vec<i32>, numbers_2: &Vec<i32>) -> i32 {
[INFO] [stdout]    |                                                           ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 30 - fn find_similarity_score(numbers_1: &Vec<i32>, numbers_2: &Vec<i32>) -> i32 {
[INFO] [stdout] 30 + fn find_similarity_score(numbers_1: &Vec<i32>, numbers_2: &[i32]) -> i32 {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&mut Vec` instead of `&mut [_]` involves a new object where a slice will do
[INFO] [stdout]   --> day_07/src/main.rs:85:17
[INFO] [stdout]    |
[INFO] [stdout] 85 | fn put_value(v: &mut Vec<Option<Operator>>, op: Operator) {
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 85 - fn put_value(v: &mut Vec<Option<Operator>>, op: Operator) {
[INFO] [stdout] 85 + fn put_value(v: &mut [Option<Operator>], op: Operator) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `i` is only used to index `v`
[INFO] [stdout]   --> day_07/src/main.rs:86:14
[INFO] [stdout]    |
[INFO] [stdout] 86 |     for i in 0..v.len() {
[INFO] [stdout]    |              ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stdout] help: consider using an iterator
[INFO] [stdout]    |
[INFO] [stdout] 86 -     for i in 0..v.len() {
[INFO] [stdout] 86 +     for <item> in &mut v {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking day_04 v0.1.0 (/opt/rustwide/workdir/day_04)
[INFO] [stderr]     Checking day_06 v0.1.0 (/opt/rustwide/workdir/day_06)
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]   --> day_02/src/main.rs:11:25
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn count_safe<F>(lines: &Vec<String>, is_safe_predicate: F) -> i32
[INFO] [stdout]    |                         ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout]    = note: `#[warn(clippy::ptr_arg)]` on by default
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 11 - fn count_safe<F>(lines: &Vec<String>, is_safe_predicate: F) -> i32
[INFO] [stdout] 11 + fn count_safe<F>(lines: &[String], is_safe_predicate: F) -> i32
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]   --> day_02/src/main.rs:18:33
[INFO] [stdout]    |
[INFO] [stdout] 18 |         let levels = parse_line(&line);
[INFO] [stdout]    |                                 ^^^^^ help: change this to: `line`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout]    = note: `#[warn(clippy::needless_borrow)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]   --> day_01/src/main.rs:34:46
[INFO] [stdout]    |
[INFO] [stdout] 34 |         if let Some(count) = frequencies.get(&number) {
[INFO] [stdout]    |                                              ^^^^^^^ help: change this to: `number`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout]    = note: `#[warn(clippy::needless_borrow)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]   --> day_01/src/main.rs:44:46
[INFO] [stdout]    |
[INFO] [stdout] 44 |         if let Some(count) = frequencies.get(&number) {
[INFO] [stdout]    |                                              ^^^^^^^ help: change this to: `number`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]   --> day_01/src/main.rs:52:35
[INFO] [stdout]    |
[INFO] [stdout] 52 | fn find_total_distance(numbers_1: &Vec<i32>, numbers_2: &Vec<i32>) -> i32 {
[INFO] [stdout]    |                                   ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 52 - fn find_total_distance(numbers_1: &Vec<i32>, numbers_2: &Vec<i32>) -> i32 {
[INFO] [stdout] 52 + fn find_total_distance(numbers_1: &[i32], numbers_2: &Vec<i32>) -> i32 {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]   --> day_01/src/main.rs:52:57
[INFO] [stdout]    |
[INFO] [stdout] 52 | fn find_total_distance(numbers_1: &Vec<i32>, numbers_2: &Vec<i32>) -> i32 {
[INFO] [stdout]    |                                                         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 52 - fn find_total_distance(numbers_1: &Vec<i32>, numbers_2: &Vec<i32>) -> i32 {
[INFO] [stdout] 52 + fn find_total_distance(numbers_1: &Vec<i32>, numbers_2: &[i32]) -> i32 {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]   --> day_02/src/main.rs:43:20
[INFO] [stdout]    |
[INFO] [stdout] 43 | fn is_safe(levels: &Vec<i32>) -> bool {
[INFO] [stdout]    |                    ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 43 - fn is_safe(levels: &Vec<i32>) -> bool {
[INFO] [stdout] 43 + fn is_safe(levels: &[i32]) -> bool {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]   --> day_01/src/main.rs:30:37
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn find_similarity_score(numbers_1: &Vec<i32>, numbers_2: &Vec<i32>) -> i32 {
[INFO] [stdout]    |                                     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout]    = note: `#[warn(clippy::ptr_arg)]` on by default
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 30 - fn find_similarity_score(numbers_1: &Vec<i32>, numbers_2: &Vec<i32>) -> i32 {
[INFO] [stdout] 30 + fn find_similarity_score(numbers_1: &[i32], numbers_2: &Vec<i32>) -> i32 {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `.into_iter()` call is equivalent to `.iter()` and will not consume the `Vec`
[INFO] [stdout]   --> day_02/src/main.rs:56:14
[INFO] [stdout]    |
[INFO] [stdout] 56 |             .into_iter()
[INFO] [stdout]    |              ^^^^^^^^^ help: call directly: `iter`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#into_iter_on_ref
[INFO] [stdout]    = note: `#[warn(clippy::into_iter_on_ref)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `clone` on type `i32` which implements the `Copy` trait
[INFO] [stdout]   --> day_02/src/main.rs:59:31
[INFO] [stdout]    |
[INFO] [stdout] 59 |             .map(|(_, value)| value.clone())
[INFO] [stdout]    |                               ^^^^^^^^^^^^^ help: try dereferencing it: `*value`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stdout]    = note: `#[warn(clippy::clone_on_copy)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]   --> day_01/src/main.rs:30:59
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn find_similarity_score(numbers_1: &Vec<i32>, numbers_2: &Vec<i32>) -> i32 {
[INFO] [stdout]    |                                                           ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 30 - fn find_similarity_score(numbers_1: &Vec<i32>, numbers_2: &Vec<i32>) -> i32 {
[INFO] [stdout] 30 + fn find_similarity_score(numbers_1: &Vec<i32>, numbers_2: &[i32]) -> i32 {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]   --> day_01/src/main.rs:34:46
[INFO] [stdout]    |
[INFO] [stdout] 34 |         if let Some(count) = frequencies.get(&number) {
[INFO] [stdout]    |                                              ^^^^^^^ help: change this to: `number`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout]    = note: `#[warn(clippy::needless_borrow)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]   --> day_01/src/main.rs:44:46
[INFO] [stdout]    |
[INFO] [stdout] 44 |         if let Some(count) = frequencies.get(&number) {
[INFO] [stdout]    |                                              ^^^^^^^ help: change this to: `number`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]   --> day_05/src/main.rs:17:26
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn from_lines(lines: &Vec<String>) -> Self {
[INFO] [stdout]    |                          ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout]    = note: `#[warn(clippy::ptr_arg)]` on by default
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 17 -     fn from_lines(lines: &Vec<String>) -> Self {
[INFO] [stdout] 17 +     fn from_lines(lines: &[String]) -> Self {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]   --> day_05/src/main.rs:29:52
[INFO] [stdout]    |
[INFO] [stdout] 29 |                 let nums: Vec<i32> = parse_numbers(&line, "|");
[INFO] [stdout]    |                                                    ^^^^^ help: change this to: `line`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout]    = note: `#[warn(clippy::needless_borrow)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]   --> day_05/src/main.rs:33:48
[INFO] [stdout]    |
[INFO] [stdout] 33 |                 if let Some(s) = rules.get_mut(&a) {
[INFO] [stdout]    |                                                ^^ help: change this to: `a`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `clone` on type `i32` which implements the `Copy` trait
[INFO] [stdout]   --> day_05/src/main.rs:34:30
[INFO] [stdout]    |
[INFO] [stdout] 34 |                     s.insert(b.clone());
[INFO] [stdout]    |                              ^^^^^^^^^ help: try dereferencing it: `*b`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stdout]    = note: `#[warn(clippy::clone_on_copy)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `clone` on type `i32` which implements the `Copy` trait
[INFO] [stdout]   --> day_05/src/main.rs:36:34
[INFO] [stdout]    |
[INFO] [stdout] 36 |                     rules.insert(a.clone(), HashSet::from([b.clone()]));
[INFO] [stdout]    |                                  ^^^^^^^^^ help: try dereferencing it: `*a`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `clone` on type `i32` which implements the `Copy` trait
[INFO] [stdout]   --> day_05/src/main.rs:36:60
[INFO] [stdout]    |
[INFO] [stdout] 36 |                     rules.insert(a.clone(), HashSet::from([b.clone()]));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: try dereferencing it: `*b`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]   --> day_05/src/main.rs:39:46
[INFO] [stdout]    |
[INFO] [stdout] 39 |                 sequences.push(parse_numbers(&line, ","));
[INFO] [stdout]    |                                              ^^^^^ help: change this to: `line`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]   --> day_05/src/main.rs:51:20
[INFO] [stdout]    |
[INFO] [stdout] 51 |         if is_good(&seq, &data.rules) {
[INFO] [stdout]    |                    ^^^^ help: change this to: `seq`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]   --> day_01/src/main.rs:52:35
[INFO] [stdout]    |
[INFO] [stdout] 52 | fn find_total_distance(numbers_1: &Vec<i32>, numbers_2: &Vec<i32>) -> i32 {
[INFO] [stdout]    |                                   ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 52 - fn find_total_distance(numbers_1: &Vec<i32>, numbers_2: &Vec<i32>) -> i32 {
[INFO] [stdout] 52 + fn find_total_distance(numbers_1: &[i32], numbers_2: &Vec<i32>) -> i32 {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]   --> day_01/src/main.rs:52:57
[INFO] [stdout]    |
[INFO] [stdout] 52 | fn find_total_distance(numbers_1: &Vec<i32>, numbers_2: &Vec<i32>) -> i32 {
[INFO] [stdout]    |                                                         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 52 - fn find_total_distance(numbers_1: &Vec<i32>, numbers_2: &Vec<i32>) -> i32 {
[INFO] [stdout] 52 + fn find_total_distance(numbers_1: &Vec<i32>, numbers_2: &[i32]) -> i32 {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]   --> day_05/src/main.rs:60:18
[INFO] [stdout]    |
[INFO] [stdout] 60 | fn is_good(nums: &Vec<i32>, rules: &HashMap<i32, HashSet<i32>>) -> bool {
[INFO] [stdout]    |                  ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 60 - fn is_good(nums: &Vec<i32>, rules: &HashMap<i32, HashSet<i32>>) -> bool {
[INFO] [stdout] 60 + fn is_good(nums: &[i32], rules: &HashMap<i32, HashSet<i32>>) -> bool {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: match can be simplified with `.unwrap_or_default()`
[INFO] [stdout]   --> day_07/src/main.rs:24:31
[INFO] [stdout]    |
[INFO] [stdout] 24 |           Operator::Multiply => match a.checked_mul(b) {
[INFO] [stdout]    |  _______________________________^
[INFO] [stdout] 25 | |             Some(val) => val,
[INFO] [stdout] 26 | |             None => 0,
[INFO] [stdout] 27 | |         },
[INFO] [stdout]    | |_________^ help: replace it with: `a.checked_mul(b).unwrap_or_default()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_unwrap_or_default
[INFO] [stdout]    = note: `#[warn(clippy::manual_unwrap_or_default)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> day_03/src/main.rs:50:16
[INFO] [stdout]    |
[INFO] [stdout] 50 |             if !fancy || (fancy && enabled) {
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout]    = note: `#[warn(clippy::nonminimal_bool)]` on by default
[INFO] [stdout] help: try
[INFO] [stdout]    |
[INFO] [stdout] 50 -             if !fancy || (fancy && enabled) {
[INFO] [stdout] 50 +             if !(fancy && !enabled) {
[INFO] [stdout]    |
[INFO] [stdout] 50 -             if !fancy || (fancy && enabled) {
[INFO] [stdout] 50 +             if !fancy || enabled {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]   --> day_07/src/main.rs:33:17
[INFO] [stdout]    |
[INFO] [stdout] 33 |     components: &Vec<i64>,
[INFO] [stdout]    |                 ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout]    = note: `#[warn(clippy::ptr_arg)]` on by default
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 33 -     components: &Vec<i64>,
[INFO] [stdout] 33 +     components: &[i64],
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `i` is only used to index `op_sequences`
[INFO] [stdout]   --> day_07/src/main.rs:41:14
[INFO] [stdout]    |
[INFO] [stdout] 41 |     for i in 0..op_sequences.len() {
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stdout]    = note: `#[warn(clippy::needless_range_loop)]` on by default
[INFO] [stdout] help: consider using an iterator
[INFO] [stdout]    |
[INFO] [stdout] 41 -     for i in 0..op_sequences.len() {
[INFO] [stdout] 41 +     for <item> in &op_sequences {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]   --> day_07/src/main.rs:56:16
[INFO] [stdout]    |
[INFO] [stdout] 56 | fn get_op(seq: &Vec<Option<Operator>>, index: usize) -> Operator {
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 56 - fn get_op(seq: &Vec<Option<Operator>>, index: usize) -> Operator {
[INFO] [stdout] 56 + fn get_op(seq: &[Option<Operator>], index: usize) -> Operator {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant pattern matching, consider using `is_some()`
[INFO] [stdout]   --> day_03/src/main.rs:56:16
[INFO] [stdout]    |
[INFO] [stdout] 56 |         if let Some(_) = re_do.captures(p) {
[INFO] [stdout]    |         -------^^^^^^^-------------------- help: try: `if re_do.captures(p).is_some()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stdout]    = note: `#[warn(clippy::redundant_pattern_matching)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant pattern matching, consider using `is_some()`
[INFO] [stdout]   --> day_03/src/main.rs:61:16
[INFO] [stdout]    |
[INFO] [stdout] 61 |         if let Some(_) = re_dont.captures(p) {
[INFO] [stdout]    |         -------^^^^^^^---------------------- help: try: `if re_dont.captures(p).is_some()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&mut Vec` instead of `&mut [_]` involves a new object where a slice will do
[INFO] [stdout]   --> day_07/src/main.rs:85:17
[INFO] [stdout]    |
[INFO] [stdout] 85 | fn put_value(v: &mut Vec<Option<Operator>>, op: Operator) {
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 85 - fn put_value(v: &mut Vec<Option<Operator>>, op: Operator) {
[INFO] [stdout] 85 + fn put_value(v: &mut [Option<Operator>], op: Operator) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `i` is only used to index `v`
[INFO] [stdout]   --> day_07/src/main.rs:86:14
[INFO] [stdout]    |
[INFO] [stdout] 86 |     for i in 0..v.len() {
[INFO] [stdout]    |              ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stdout] help: consider using an iterator
[INFO] [stdout]    |
[INFO] [stdout] 86 -     for i in 0..v.len() {
[INFO] [stdout] 86 +     for <item> in &mut v {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> day_03/src/main.rs:50:16
[INFO] [stdout]    |
[INFO] [stdout] 50 |             if !fancy || (fancy && enabled) {
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout]    = note: `#[warn(clippy::nonminimal_bool)]` on by default
[INFO] [stdout] help: try
[INFO] [stdout]    |
[INFO] [stdout] 50 -             if !fancy || (fancy && enabled) {
[INFO] [stdout] 50 +             if !(fancy && !enabled) {
[INFO] [stdout]    |
[INFO] [stdout] 50 -             if !fancy || (fancy && enabled) {
[INFO] [stdout] 50 +             if !fancy || enabled {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant pattern matching, consider using `is_some()`
[INFO] [stdout]   --> day_03/src/main.rs:56:16
[INFO] [stdout]    |
[INFO] [stdout] 56 |         if let Some(_) = re_do.captures(p) {
[INFO] [stdout]    |         -------^^^^^^^-------------------- help: try: `if re_do.captures(p).is_some()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stdout]    = note: `#[warn(clippy::redundant_pattern_matching)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant pattern matching, consider using `is_some()`
[INFO] [stdout]   --> day_03/src/main.rs:61:16
[INFO] [stdout]    |
[INFO] [stdout] 61 |         if let Some(_) = re_dont.captures(p) {
[INFO] [stdout]    |         -------^^^^^^^---------------------- help: try: `if re_dont.captures(p).is_some()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant field names in struct initialization
[INFO] [stdout]    --> day_06/src/main.rs:145:13
[INFO] [stdout]     |
[INFO] [stdout] 145 |             state: state,
[INFO] [stdout]     |             ^^^^^^^^^^^^ help: replace it with: `state`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stdout]     = note: `#[warn(clippy::redundant_field_names)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant field names in struct initialization
[INFO] [stdout]    --> day_06/src/main.rs:146:13
[INFO] [stdout]     |
[INFO] [stdout] 146 |             obstacle_map: obstacle_map,
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `obstacle_map`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant field names in struct initialization
[INFO] [stdout]    --> day_06/src/main.rs:147:13
[INFO] [stdout]     |
[INFO] [stdout] 147 |             visited_map: visited_map,
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `visited_map`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant field names in struct initialization
[INFO] [stdout]    --> day_06/src/main.rs:145:13
[INFO] [stdout]     |
[INFO] [stdout] 145 |             state: state,
[INFO] [stdout]     |             ^^^^^^^^^^^^ help: replace it with: `state`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stdout]     = note: `#[warn(clippy::redundant_field_names)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant field names in struct initialization
[INFO] [stdout]    --> day_06/src/main.rs:146:13
[INFO] [stdout]     |
[INFO] [stdout] 146 |             obstacle_map: obstacle_map,
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `obstacle_map`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant field names in struct initialization
[INFO] [stdout]    --> day_06/src/main.rs:147:13
[INFO] [stdout]     |
[INFO] [stdout] 147 |             visited_map: visited_map,
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `visited_map`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: returning the result of a `let` binding from a block
[INFO] [stdout]   --> day_06/src/main.rs:94:9
[INFO] [stdout]    |
[INFO] [stdout] 92 |         let res = i >= 0 && i < n_rows && j >= 0 && j < n_cols;
[INFO] [stdout]    |         ------------------------------------------------------- unnecessary `let` binding
[INFO] [stdout] 93 |
[INFO] [stdout] 94 |         res
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stdout]    = note: `#[warn(clippy::let_and_return)]` on by default
[INFO] [stdout] help: return the expression directly
[INFO] [stdout]    |
[INFO] [stdout] 92 ~         
[INFO] [stdout] 93 |
[INFO] [stdout] 94 ~         i >= 0 && i < n_rows && j >= 0 && j < n_cols
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: importing legacy numeric constants
[INFO] [stdout]  --> day_04/src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::usize;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: remove this import
[INFO] [stdout]   = note: then `usize::<CONST>` will resolve to the respective associated constant
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#legacy_numeric_constants
[INFO] [stdout]   = note: `#[warn(clippy::legacy_numeric_constants)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: returning the result of a `let` binding from a block
[INFO] [stdout]   --> day_06/src/main.rs:94:9
[INFO] [stdout]    |
[INFO] [stdout] 92 |         let res = i >= 0 && i < n_rows && j >= 0 && j < n_cols;
[INFO] [stdout]    |         ------------------------------------------------------- unnecessary `let` binding
[INFO] [stdout] 93 |
[INFO] [stdout] 94 |         res
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stdout]    = note: `#[warn(clippy::let_and_return)]` on by default
[INFO] [stdout] help: return the expression directly
[INFO] [stdout]    |
[INFO] [stdout] 92 ~         
[INFO] [stdout] 93 |
[INFO] [stdout] 94 ~         i >= 0 && i < n_rows && j >= 0 && j < n_cols
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `clone` on type `usize` which implements the `Copy` trait
[INFO] [stdout]   --> day_04/src/main.rs:29:29
[INFO] [stdout]    |
[INFO] [stdout] 29 |         let mut current_i = i.clone();
[INFO] [stdout]    |                             ^^^^^^^^^ help: try dereferencing it: `*i`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stdout]    = note: `#[warn(clippy::clone_on_copy)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `clone` on type `usize` which implements the `Copy` trait
[INFO] [stdout]   --> day_04/src/main.rs:30:29
[INFO] [stdout]    |
[INFO] [stdout] 30 |         let mut current_j = j.clone();
[INFO] [stdout]    |                             ^^^^^^^^^ help: try dereferencing it: `*j`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `clone` on type `usize` which implements the `Copy` trait
[INFO] [stdout]   --> day_04/src/main.rs:32:28
[INFO] [stdout]    |
[INFO] [stdout] 32 |             seq.push(grid[(current_i.clone(), current_j.clone())]);
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^ help: try removing the `clone` call: `current_i`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `clone` on type `usize` which implements the `Copy` trait
[INFO] [stdout]   --> day_04/src/main.rs:32:47
[INFO] [stdout]    |
[INFO] [stdout] 32 |             seq.push(grid[(current_i.clone(), current_j.clone())]);
[INFO] [stdout]    |                                               ^^^^^^^^^^^^^^^^^ help: try removing the `clone` call: `current_j`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `clone` on type `usize` which implements the `Copy` trait
[INFO] [stdout]   --> day_04/src/main.rs:46:29
[INFO] [stdout]    |
[INFO] [stdout] 46 |         let mut current_i = i.clone();
[INFO] [stdout]    |                             ^^^^^^^^^ help: try dereferencing it: `*i`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `clone` on type `usize` which implements the `Copy` trait
[INFO] [stdout]   --> day_04/src/main.rs:47:29
[INFO] [stdout]    |
[INFO] [stdout] 47 |         let mut current_j = j.clone();
[INFO] [stdout]    |                             ^^^^^^^^^ help: try dereferencing it: `*j`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `clone` on type `usize` which implements the `Copy` trait
[INFO] [stdout]   --> day_04/src/main.rs:49:28
[INFO] [stdout]    |
[INFO] [stdout] 49 |             seq.push(grid[(current_i.clone(), current_j.clone())]);
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^ help: try removing the `clone` call: `current_i`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `clone` on type `usize` which implements the `Copy` trait
[INFO] [stdout]   --> day_04/src/main.rs:49:47
[INFO] [stdout]    |
[INFO] [stdout] 49 |             seq.push(grid[(current_i.clone(), current_j.clone())]);
[INFO] [stdout]    |                                               ^^^^^^^^^^^^^^^^^ help: try removing the `clone` call: `current_j`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]   --> day_04/src/main.rs:80:36
[INFO] [stdout]    |
[INFO] [stdout] 80 |         let count_seq = count_xmas(&seq);
[INFO] [stdout]    |                                    ^^^^ help: change this to: `seq`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout]    = note: `#[warn(clippy::needless_borrow)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]   --> day_04/src/main.rs:88:20
[INFO] [stdout]    |
[INFO] [stdout] 88 | fn count_xmas(seq: &Vec<char>) -> i32 {
[INFO] [stdout]    |                    ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout]    = note: `#[warn(clippy::ptr_arg)]` on by default
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 88 - fn count_xmas(seq: &Vec<char>) -> i32 {
[INFO] [stdout] 88 + fn count_xmas(seq: &[char]) -> i32 {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]   --> day_04/src/main.rs:97:34
[INFO] [stdout]    |
[INFO] [stdout] 97 | fn lines_to_grid_of_chars(lines: &Vec<String>) -> Vec<Vec<char>> {
[INFO] [stdout]    |                                  ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 97 - fn lines_to_grid_of_chars(lines: &Vec<String>) -> Vec<Vec<char>> {
[INFO] [stdout] 97 + fn lines_to_grid_of_chars(lines: &[String]) -> Vec<Vec<char>> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: importing legacy numeric constants
[INFO] [stdout]  --> day_04/src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::usize;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: remove this import
[INFO] [stdout]   = note: then `usize::<CONST>` will resolve to the respective associated constant
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#legacy_numeric_constants
[INFO] [stdout]   = note: `#[warn(clippy::legacy_numeric_constants)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `clone` on type `usize` which implements the `Copy` trait
[INFO] [stdout]   --> day_04/src/main.rs:29:29
[INFO] [stdout]    |
[INFO] [stdout] 29 |         let mut current_i = i.clone();
[INFO] [stdout]    |                             ^^^^^^^^^ help: try dereferencing it: `*i`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stdout]    = note: `#[warn(clippy::clone_on_copy)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `clone` on type `usize` which implements the `Copy` trait
[INFO] [stdout]   --> day_04/src/main.rs:30:29
[INFO] [stdout]    |
[INFO] [stdout] 30 |         let mut current_j = j.clone();
[INFO] [stdout]    |                             ^^^^^^^^^ help: try dereferencing it: `*j`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `clone` on type `usize` which implements the `Copy` trait
[INFO] [stdout]   --> day_04/src/main.rs:32:28
[INFO] [stdout]    |
[INFO] [stdout] 32 |             seq.push(grid[(current_i.clone(), current_j.clone())]);
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^ help: try removing the `clone` call: `current_i`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `clone` on type `usize` which implements the `Copy` trait
[INFO] [stdout]   --> day_04/src/main.rs:32:47
[INFO] [stdout]    |
[INFO] [stdout] 32 |             seq.push(grid[(current_i.clone(), current_j.clone())]);
[INFO] [stdout]    |                                               ^^^^^^^^^^^^^^^^^ help: try removing the `clone` call: `current_j`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `clone` on type `usize` which implements the `Copy` trait
[INFO] [stdout]   --> day_04/src/main.rs:46:29
[INFO] [stdout]    |
[INFO] [stdout] 46 |         let mut current_i = i.clone();
[INFO] [stdout]    |                             ^^^^^^^^^ help: try dereferencing it: `*i`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `clone` on type `usize` which implements the `Copy` trait
[INFO] [stdout]   --> day_04/src/main.rs:47:29
[INFO] [stdout]    |
[INFO] [stdout] 47 |         let mut current_j = j.clone();
[INFO] [stdout]    |                             ^^^^^^^^^ help: try dereferencing it: `*j`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `clone` on type `usize` which implements the `Copy` trait
[INFO] [stdout]   --> day_04/src/main.rs:49:28
[INFO] [stdout]    |
[INFO] [stdout] 49 |             seq.push(grid[(current_i.clone(), current_j.clone())]);
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^ help: try removing the `clone` call: `current_i`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `clone` on type `usize` which implements the `Copy` trait
[INFO] [stdout]   --> day_04/src/main.rs:49:47
[INFO] [stdout]    |
[INFO] [stdout] 49 |             seq.push(grid[(current_i.clone(), current_j.clone())]);
[INFO] [stdout]    |                                               ^^^^^^^^^^^^^^^^^ help: try removing the `clone` call: `current_j`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]   --> day_04/src/main.rs:80:36
[INFO] [stdout]    |
[INFO] [stdout] 80 |         let count_seq = count_xmas(&seq);
[INFO] [stdout]    |                                    ^^^^ help: change this to: `seq`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout]    = note: `#[warn(clippy::needless_borrow)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]   --> day_04/src/main.rs:88:20
[INFO] [stdout]    |
[INFO] [stdout] 88 | fn count_xmas(seq: &Vec<char>) -> i32 {
[INFO] [stdout]    |                    ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout]    = note: `#[warn(clippy::ptr_arg)]` on by default
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 88 - fn count_xmas(seq: &Vec<char>) -> i32 {
[INFO] [stdout] 88 + fn count_xmas(seq: &[char]) -> i32 {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]   --> day_04/src/main.rs:97:34
[INFO] [stdout]    |
[INFO] [stdout] 97 | fn lines_to_grid_of_chars(lines: &Vec<String>) -> Vec<Vec<char>> {
[INFO] [stdout]    |                                  ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 97 - fn lines_to_grid_of_chars(lines: &Vec<String>) -> Vec<Vec<char>> {
[INFO] [stdout] 97 + fn lines_to_grid_of_chars(lines: &[String]) -> Vec<Vec<char>> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `Command { std: "docker" "inspect" "49a7f98fb15cab6cb097b0d2f1967ebca7862a7f1c0e58ab9fef435498ebbb3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49a7f98fb15cab6cb097b0d2f1967ebca7862a7f1c0e58ab9fef435498ebbb3c", kill_on_drop: false }`
[INFO] [stdout] 49a7f98fb15cab6cb097b0d2f1967ebca7862a7f1c0e58ab9fef435498ebbb3c