[INFO] cloning repository https://github.com/dmurtari/Advent-of-Code-2025
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dmurtari/Advent-of-Code-2025" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdmurtari%2FAdvent-of-Code-2025", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdmurtari%2FAdvent-of-Code-2025'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 15712e13e9b78d7a5f1820bace6ac7d01bfe20fe
[INFO] linting dmurtari/Advent-of-Code-2025 against nightly for clippy-nonminimal_bool-denied
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdmurtari%2FAdvent-of-Code-2025" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/dmurtari/Advent-of-Code-2025
[INFO] finished tweaking git repo https://github.com/dmurtari/Advent-of-Code-2025
[INFO] tweaked toml for git repo https://github.com/dmurtari/Advent-of-Code-2025 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/dmurtari/Advent-of-Code-2025 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/dmurtari/Advent-of-Code-2025 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-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 28de336bd729c923711472be2504253a8ef514eef61a5fb03f859a9b16da08b7
[INFO] running `Command { std: "docker" "start" "-a" "28de336bd729c923711472be2504253a8ef514eef61a5fb03f859a9b16da08b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "28de336bd729c923711472be2504253a8ef514eef61a5fb03f859a9b16da08b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28de336bd729c923711472be2504253a8ef514eef61a5fb03f859a9b16da08b7", kill_on_drop: false }`
[INFO] [stdout] 28de336bd729c923711472be2504253a8ef514eef61a5fb03f859a9b16da08b7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 959aaf2da635cfdbbdacfabd724e8519c5ea2769fd950fa28979d7911d2421dd
[INFO] running `Command { std: "docker" "start" "-a" "959aaf2da635cfdbbdacfabd724e8519c5ea2769fd950fa28979d7911d2421dd", kill_on_drop: false }`
[INFO] [stderr]     Checking aho-corasick v1.1.4
[INFO] [stderr]     Checking regex-automata v0.4.13
[INFO] [stderr]     Checking regex v1.12.2
[INFO] [stderr]     Checking advent-of-code-2025 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: importing legacy numeric constants
[INFO] [stdout]  --> src/bin/day9.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::i64;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: remove this import
[INFO] [stdout]   = note: then `i64::<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: unneeded `return` statement
[INFO] [stdout]   --> src/bin/day9.rs:54:5
[INFO] [stdout]    |
[INFO] [stdout] 54 |     return max_found;
[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] 54 -     return max_found;
[INFO] [stdout] 54 +     max_found
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]   --> src/bin/day9.rs:41:30
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn find_largest_area(coords: &Vec<Vec<i64>>) -> 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] 41 - fn find_largest_area(coords: &Vec<Vec<i64>>) -> i64 {
[INFO] [stdout] 41 + fn find_largest_area(coords: &[Vec<i64>]) -> i64 {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/bin/day9.rs:60:5
[INFO] [stdout]    |
[INFO] [stdout] 60 |     return area;
[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] 60 -     return area;
[INFO] [stdout] 60 +     area
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/bin/day4.rs:75:5
[INFO] [stdout]    |
[INFO] [stdout] 75 |     return count;
[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] 75 -     return count;
[INFO] [stdout] 75 +     count
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `if` statement can be collapsed
[INFO] [stdout]   --> src/bin/day4.rs:62:13
[INFO] [stdout]    |
[INFO] [stdout] 62 | /             if x >= 0
[INFO] [stdout] 63 | |                 && y >= 0
[INFO] [stdout] 64 | |                 && !(x == i && y == j)
[INFO] [stdout] 65 | |                 && x < vec[0].len().try_into().unwrap()
[INFO] [stdout] ...  |
[INFO] [stdout] 71 | |             }
[INFO] [stdout]    | |_____________^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stdout]    = note: `#[warn(clippy::collapsible_if)]` on by default
[INFO] [stdout] help: collapse nested if block
[INFO] [stdout]    |
[INFO] [stdout] 66 ~                 && y < vec.len().try_into().unwrap()
[INFO] [stdout] 67 ~                 && vec[x as usize][y as usize] == '@' {
[INFO] [stdout] 68 |                     count += 1
[INFO] [stdout] 69 ~                 }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]   --> src/bin/day1.rs:40:17
[INFO] [stdout]    |
[INFO] [stdout] 40 |                 target = target - dial_size;
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `target -= dial_size`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout]    = note: `#[warn(clippy::assign_op_pattern)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]   --> src/bin/day1.rs:44:17
[INFO] [stdout]    |
[INFO] [stdout] 44 |                 target = target - dial_size;
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `target -= dial_size`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]   --> src/bin/day1.rs:45:17
[INFO] [stdout]    |
[INFO] [stdout] 45 |                 passed = passed + 1;
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^ help: replace it with: `passed += 1`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]   --> src/bin/day1.rs:53:17
[INFO] [stdout]    |
[INFO] [stdout] 53 |                 target = target + dial_size;
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `target += dial_size`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]   --> src/bin/day1.rs:57:17
[INFO] [stdout]    |
[INFO] [stdout] 57 |                 target = target + dial_size;
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `target += dial_size`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]   --> src/bin/day1.rs:58:17
[INFO] [stdout]    |
[INFO] [stdout] 58 |                 passed = passed + 1;
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^ help: replace it with: `passed += 1`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]   --> src/bin/day1.rs:66:13
[INFO] [stdout]    |
[INFO] [stdout] 66 |             result = result + passed;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `result += passed`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]   --> src/bin/day1.rs:71:13
[INFO] [stdout]    |
[INFO] [stdout] 71 |             result = result + 1;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^ help: replace it with: `result += 1`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: empty string literal in `println!`
[INFO] [stdout]   --> src/bin/day1.rs:75:9
[INFO] [stdout]    |
[INFO] [stdout] 75 |         println!("")
[INFO] [stdout]    |         ^^^^^^^^^--^
[INFO] [stdout]    |                  |
[INFO] [stdout]    |                  help: remove the empty string
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stdout]    = note: `#[warn(clippy::println_empty_string)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison to empty slice
[INFO] [stdout]   --> src/bin/day5.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 |         if line == "" {
[INFO] [stdout]    |            ^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `line.is_empty()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#comparison_to_empty
[INFO] [stdout]    = note: `#[warn(clippy::comparison_to_empty)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/bin/day5.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 47 |         return acc + (cur[1] - cur[0] + 1);
[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] 47 -         return acc + (cur[1] - cur[0] + 1);
[INFO] [stdout] 47 +         acc + (cur[1] - cur[0] + 1)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/bin/day5.rs:67:5
[INFO] [stdout]    |
[INFO] [stdout] 67 |     return result;
[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] 67 -     return result;
[INFO] [stdout] 67 +     result
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/bin/day5.rs:105:5
[INFO] [stdout]     |
[INFO] [stdout] 105 |     return old_parsed;
[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] 105 -     return old_parsed;
[INFO] [stdout] 105 +     old_parsed
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]   --> src/bin/day5.rs:79:16
[INFO] [stdout]    |
[INFO] [stdout] 79 |             if new_parsed.len() == 0 {
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `new_parsed.is_empty()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout]    = note: `#[warn(clippy::len_zero)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_max_joltage` is never used
[INFO] [stdout]   --> src/bin/day3.rs:53:4
[INFO] [stdout]    |
[INFO] [stdout] 53 | fn get_max_joltage(bank: &str) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/bin/day3.rs:50:5
[INFO] [stdout]    |
[INFO] [stdout] 50 |     return result.to_string().parse::<i64>().unwrap();
[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] 50 -     return result.to_string().parse::<i64>().unwrap();
[INFO] [stdout] 50 +     result.to_string().parse::<i64>().unwrap()
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/bin/day3.rs:73:5
[INFO] [stdout]    |
[INFO] [stdout] 73 |     return result.to_string().parse::<i32>().unwrap();
[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] 73 -     return result.to_string().parse::<i32>().unwrap();
[INFO] [stdout] 73 +     result.to_string().parse::<i32>().unwrap()
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/bin/day4.rs:75:5
[INFO] [stdout]    |
[INFO] [stdout] 75 |     return count;
[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] 75 -     return count;
[INFO] [stdout] 75 +     count
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `if` statement can be collapsed
[INFO] [stdout]   --> src/bin/day4.rs:62:13
[INFO] [stdout]    |
[INFO] [stdout] 62 | /             if x >= 0
[INFO] [stdout] 63 | |                 && y >= 0
[INFO] [stdout] 64 | |                 && !(x == i && y == j)
[INFO] [stdout] 65 | |                 && x < vec[0].len().try_into().unwrap()
[INFO] [stdout] ...  |
[INFO] [stdout] 71 | |             }
[INFO] [stdout]    | |_____________^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stdout]    = note: `#[warn(clippy::collapsible_if)]` on by default
[INFO] [stdout] help: collapse nested if block
[INFO] [stdout]    |
[INFO] [stdout] 66 ~                 && y < vec.len().try_into().unwrap()
[INFO] [stdout] 67 ~                 && vec[x as usize][y as usize] == '@' {
[INFO] [stdout] 68 |                     count += 1
[INFO] [stdout] 69 ~                 }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/bin/day2.rs:79:5
[INFO] [stdout]    |
[INFO] [stdout] 79 |     return count;
[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] 79 -     return count;
[INFO] [stdout] 79 +     count
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of `.is_multiple_of()`
[INFO] [stdout]   --> src/bin/day2.rs:53:12
[INFO] [stdout]    |
[INFO] [stdout] 53 |         if str_len % n != 0 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^ help: replace with: `!str_len.is_multiple_of(n)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_multiple_of
[INFO] [stdout]    = note: `#[warn(clippy::manual_is_multiple_of)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]   --> src/bin/day2.rs:66:12
[INFO] [stdout]    |
[INFO] [stdout] 66 |         if sub_str.len() == 0 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `sub_str.is_empty()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout]    = note: `#[warn(clippy::len_zero)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `.fold` can be written more succinctly using another method
[INFO] [stdout]   --> src/bin/day2.rs:72:14
[INFO] [stdout]    |
[INFO] [stdout] 72 |             .fold(true, |acc, &str| acc && str == sub_str[0]);
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `all(|str| str == sub_str[0])`
[INFO] [stdout]    |
[INFO] [stdout]    = note: the `all` method is short circuiting and may change the program semantics if the iterator has side effects
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_fold
[INFO] [stdout]    = note: `#[warn(clippy::unnecessary_fold)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/bin/day2.rs:101:5
[INFO] [stdout]     |
[INFO] [stdout] 101 |     return true;
[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] 101 -     return true;
[INFO] [stdout] 101 +     true
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of `.is_multiple_of()`
[INFO] [stdout]   --> src/bin/day2.rs:85:8
[INFO] [stdout]    |
[INFO] [stdout] 85 |     if num_as_str.len() % 2 != 0 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with: `!num_as_str.len().is_multiple_of(2)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_multiple_of
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the variable `cursor_1` is used as a loop counter
[INFO] [stdout]   --> src/bin/day2.rs:92:5
[INFO] [stdout]    |
[INFO] [stdout] 92 |     for _ in 0..num_as_str.len() / 2 {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `for (cursor_1, _) in (0..num_as_str.len() / 2).enumerate()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_counter_loop
[INFO] [stdout]    = note: `#[warn(clippy::explicit_counter_loop)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the variable `cursor_2` is used as a loop counter
[INFO] [stdout]   --> src/bin/day2.rs:92:5
[INFO] [stdout]    |
[INFO] [stdout] 92 |     for _ in 0..num_as_str.len() / 2 {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `for (cursor_2, _) in (num_as_str.len() / 2..).zip((0..num_as_str.len() / 2))`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_counter_loop
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: importing legacy numeric constants
[INFO] [stdout]  --> src/bin/day9.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::i64;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: remove this import
[INFO] [stdout]   = note: then `i64::<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: unneeded `return` statement
[INFO] [stdout]   --> src/bin/day9.rs:54:5
[INFO] [stdout]    |
[INFO] [stdout] 54 |     return max_found;
[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] 54 -     return max_found;
[INFO] [stdout] 54 +     max_found
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]   --> src/bin/day9.rs:41:30
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn find_largest_area(coords: &Vec<Vec<i64>>) -> 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] 41 - fn find_largest_area(coords: &Vec<Vec<i64>>) -> i64 {
[INFO] [stdout] 41 + fn find_largest_area(coords: &[Vec<i64>]) -> i64 {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/bin/day9.rs:60:5
[INFO] [stdout]    |
[INFO] [stdout] 60 |     return area;
[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] 60 -     return area;
[INFO] [stdout] 60 +     area
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/bin/day2.rs:79:5
[INFO] [stdout]    |
[INFO] [stdout] 79 |     return count;
[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] 79 -     return count;
[INFO] [stdout] 79 +     count
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of `.is_multiple_of()`
[INFO] [stdout]   --> src/bin/day2.rs:53:12
[INFO] [stdout]    |
[INFO] [stdout] 53 |         if str_len % n != 0 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^ help: replace with: `!str_len.is_multiple_of(n)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_multiple_of
[INFO] [stdout]    = note: `#[warn(clippy::manual_is_multiple_of)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]   --> src/bin/day2.rs:66:12
[INFO] [stdout]    |
[INFO] [stdout] 66 |         if sub_str.len() == 0 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `sub_str.is_empty()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout]    = note: `#[warn(clippy::len_zero)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `.fold` can be written more succinctly using another method
[INFO] [stdout]   --> src/bin/day2.rs:72:14
[INFO] [stdout]    |
[INFO] [stdout] 72 |             .fold(true, |acc, &str| acc && str == sub_str[0]);
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `all(|str| str == sub_str[0])`
[INFO] [stdout]    |
[INFO] [stdout]    = note: the `all` method is short circuiting and may change the program semantics if the iterator has side effects
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_fold
[INFO] [stdout]    = note: `#[warn(clippy::unnecessary_fold)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/bin/day2.rs:101:5
[INFO] [stdout]     |
[INFO] [stdout] 101 |     return true;
[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] 101 -     return true;
[INFO] [stdout] 101 +     true
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of `.is_multiple_of()`
[INFO] [stdout]   --> src/bin/day2.rs:85:8
[INFO] [stdout]    |
[INFO] [stdout] 85 |     if num_as_str.len() % 2 != 0 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with: `!num_as_str.len().is_multiple_of(2)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_multiple_of
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_max_joltage` is never used
[INFO] [stdout]   --> src/bin/day3.rs:53:4
[INFO] [stdout]    |
[INFO] [stdout] 53 | fn get_max_joltage(bank: &str) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the variable `cursor_1` is used as a loop counter
[INFO] [stdout]   --> src/bin/day2.rs:92:5
[INFO] [stdout]    |
[INFO] [stdout] 92 |     for _ in 0..num_as_str.len() / 2 {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `for (cursor_1, _) in (0..num_as_str.len() / 2).enumerate()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_counter_loop
[INFO] [stdout]    = note: `#[warn(clippy::explicit_counter_loop)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the variable `cursor_2` is used as a loop counter
[INFO] [stdout]   --> src/bin/day2.rs:92:5
[INFO] [stdout]    |
[INFO] [stdout] 92 |     for _ in 0..num_as_str.len() / 2 {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `for (cursor_2, _) in (num_as_str.len() / 2..).zip((0..num_as_str.len() / 2))`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_counter_loop
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/bin/day3.rs:50:5
[INFO] [stdout]    |
[INFO] [stdout] 50 |     return result.to_string().parse::<i64>().unwrap();
[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] 50 -     return result.to_string().parse::<i64>().unwrap();
[INFO] [stdout] 50 +     result.to_string().parse::<i64>().unwrap()
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/bin/day3.rs:73:5
[INFO] [stdout]    |
[INFO] [stdout] 73 |     return result.to_string().parse::<i32>().unwrap();
[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] 73 -     return result.to_string().parse::<i32>().unwrap();
[INFO] [stdout] 73 +     result.to_string().parse::<i32>().unwrap()
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `>= y + 1` or `x - 1 >=`
[INFO] [stdout]   --> src/bin/day7.rs:71:20
[INFO] [stdout]    |
[INFO] [stdout] 71 |                 if (char_idx as isize) - 1 >= 0
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: change it to: `(char_idx as isize) > 0`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#int_plus_one
[INFO] [stdout]    = note: `#[warn(clippy::int_plus_one)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `>= y + 1` or `x - 1 >=`
[INFO] [stdout]   --> src/bin/day7.rs:79:27
[INFO] [stdout]    |
[INFO] [stdout] 79 |                 } else if (char_idx as isize) - 1 >= 0 && manifold[row_idx][char_idx - 1] == '^' {
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: change it to: `(char_idx as isize) > 0`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#int_plus_one
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `>= y + 1` or `x - 1 >=`
[INFO] [stdout]   --> src/bin/day7.rs:71:20
[INFO] [stdout]    |
[INFO] [stdout] 71 |                 if (char_idx as isize) - 1 >= 0
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: change it to: `(char_idx as isize) > 0`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#int_plus_one
[INFO] [stdout]    = note: `#[warn(clippy::int_plus_one)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `>= y + 1` or `x - 1 >=`
[INFO] [stdout]   --> src/bin/day7.rs:79:27
[INFO] [stdout]    |
[INFO] [stdout] 79 |                 } else if (char_idx as isize) - 1 >= 0 && manifold[row_idx][char_idx - 1] == '^' {
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: change it to: `(char_idx as isize) > 0`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#int_plus_one
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]   --> src/bin/day1.rs:40:17
[INFO] [stdout]    |
[INFO] [stdout] 40 |                 target = target - dial_size;
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `target -= dial_size`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout]    = note: `#[warn(clippy::assign_op_pattern)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]   --> src/bin/day1.rs:44:17
[INFO] [stdout]    |
[INFO] [stdout] 44 |                 target = target - dial_size;
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `target -= dial_size`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]   --> src/bin/day1.rs:45:17
[INFO] [stdout]    |
[INFO] [stdout] 45 |                 passed = passed + 1;
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^ help: replace it with: `passed += 1`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]   --> src/bin/day1.rs:53:17
[INFO] [stdout]    |
[INFO] [stdout] 53 |                 target = target + dial_size;
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `target += dial_size`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]   --> src/bin/day1.rs:57:17
[INFO] [stdout]    |
[INFO] [stdout] 57 |                 target = target + dial_size;
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `target += dial_size`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]   --> src/bin/day1.rs:58:17
[INFO] [stdout]    |
[INFO] [stdout] 58 |                 passed = passed + 1;
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^ help: replace it with: `passed += 1`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]   --> src/bin/day1.rs:66:13
[INFO] [stdout]    |
[INFO] [stdout] 66 |             result = result + passed;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `result += passed`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]   --> src/bin/day1.rs:71:13
[INFO] [stdout]    |
[INFO] [stdout] 71 |             result = result + 1;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^ help: replace it with: `result += 1`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: empty string literal in `println!`
[INFO] [stdout]   --> src/bin/day1.rs:75:9
[INFO] [stdout]    |
[INFO] [stdout] 75 |         println!("")
[INFO] [stdout]    |         ^^^^^^^^^--^
[INFO] [stdout]    |                  |
[INFO] [stdout]    |                  help: remove the empty string
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stdout]    = note: `#[warn(clippy::println_empty_string)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_manifold` is never used
[INFO] [stdout]   --> src/bin/day7.rs:99:4
[INFO] [stdout]    |
[INFO] [stdout] 99 | fn print_manifold(manifold: &Vec<Vec<char>>) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/bin/day7.rs:55:5
[INFO] [stdout]    |
[INFO] [stdout] 55 |     return end_state;
[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] 55 -     return end_state;
[INFO] [stdout] 55 +     end_state
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: importing legacy numeric constants
[INFO] [stdout]  --> src/bin/day8.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::i64;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: remove this import
[INFO] [stdout]   = note: then `i64::<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: this `if` statement can be collapsed
[INFO] [stdout]   --> src/bin/day7.rs:46:13
[INFO] [stdout]    |
[INFO] [stdout] 46 | /             if char == '|' {
[INFO] [stdout] 47 | |                 if end_state[row_idx + 1][char_idx] == '.' {
[INFO] [stdout] 48 | |                     end_state[row_idx + 1][char_idx] = '|';
[INFO] [stdout] 49 | |                 }
[INFO] [stdout] 50 | |             }
[INFO] [stdout]    | |_____________^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stdout]    = note: `#[warn(clippy::collapsible_if)]` on by default
[INFO] [stdout] help: collapse nested if block
[INFO] [stdout]    |
[INFO] [stdout] 46 ~             if char == '|'
[INFO] [stdout] 47 ~                 && end_state[row_idx + 1][char_idx] == '.' {
[INFO] [stdout] 48 |                     end_state[row_idx + 1][char_idx] = '|';
[INFO] [stdout] 49 ~                 }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `j` is used to index `distances`
[INFO] [stdout]   --> src/bin/day8.rs:57:22
[INFO] [stdout]    |
[INFO] [stdout] 57 |             for j in 0..distances.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 and enumerate()
[INFO] [stdout]    |
[INFO] [stdout] 57 -             for j in 0..distances.len() {
[INFO] [stdout] 57 +             for (j, <item>) in distances.iter().enumerate() {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/bin/day7.rs:94:5
[INFO] [stdout]    |
[INFO] [stdout] 94 | /     return timelines[timelines.len() - 2]
[INFO] [stdout] 95 | |         .iter()
[INFO] [stdout] 96 | |         .fold(0, |acc, val| acc + val);
[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] 94 ~     timelines[timelines.len() - 2]
[INFO] [stdout] 95 +         .iter()
[INFO] [stdout] 96 ~         .fold(0, |acc, val| acc + val)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/bin/day8.rs:115:5
[INFO] [stdout]     |
[INFO] [stdout] 115 |     return circuit;
[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] 115 -     return circuit;
[INFO] [stdout] 115 +     circuit
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]   --> src/bin/day8.rs:96:11
[INFO] [stdout]    |
[INFO] [stdout] 96 |     while queue.len() > 0 {
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^ help: using `!is_empty` is clearer and more explicit: `!queue.is_empty()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout]    = note: `#[warn(clippy::len_zero)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]    --> src/bin/day8.rs:106:46
[INFO] [stdout]     |
[INFO] [stdout] 106 |                         if !circuit.contains(&neighbor) {
[INFO] [stdout]     |                                              ^^^^^^^^^ help: change this to: `neighbor`
[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: unneeded `return` statement
[INFO] [stdout]    --> src/bin/day8.rs:119:5
[INFO] [stdout]     |
[INFO] [stdout] 119 | /     return ((box1[0] - box2[0]).pow(2) + (box1[1] - box2[1]).pow(2) + (box1[2] - box2[2]).pow(2))
[INFO] [stdout] 120 | |         .isqrt();
[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] 119 ~     ((box1[0] - box2[0]).pow(2) + (box1[1] - box2[1]).pow(2) + (box1[2] - box2[2]).pow(2))
[INFO] [stdout] 120 ~         .isqrt()
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]    --> src/bin/day8.rs:118:19
[INFO] [stdout]     |
[INFO] [stdout] 118 | fn distance(box1: &Vec<i64>, box2: &Vec<i64>) -> 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] 118 - fn distance(box1: &Vec<i64>, box2: &Vec<i64>) -> i64 {
[INFO] [stdout] 118 + fn distance(box1: &[i64], box2: &Vec<i64>) -> i64 {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]    --> src/bin/day8.rs:118:36
[INFO] [stdout]     |
[INFO] [stdout] 118 | fn distance(box1: &Vec<i64>, box2: &Vec<i64>) -> 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] help: change this to
[INFO] [stdout]     |
[INFO] [stdout] 118 - fn distance(box1: &Vec<i64>, box2: &Vec<i64>) -> i64 {
[INFO] [stdout] 118 + fn distance(box1: &Vec<i64>, box2: &[i64]) -> i64 {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `.fold` can be written more succinctly using another method
[INFO] [stdout]   --> src/bin/day7.rs:96:10
[INFO] [stdout]    |
[INFO] [stdout] 96 |         .fold(0, |acc, val| acc + val);
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `sum()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_fold
[INFO] [stdout]    = note: `#[warn(clippy::unnecessary_fold)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: importing legacy numeric constants
[INFO] [stdout]  --> src/bin/day8.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::i64;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: remove this import
[INFO] [stdout]   = note: then `i64::<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: unneeded `return` statement
[INFO] [stdout]   --> src/bin/day6.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 44 | /     return numbers
[INFO] [stdout] 45 | |         .iter()
[INFO] [stdout] 46 | |         .fold(if operation == "+" { 0 } else { 1 }, |acc, cur| {
[INFO] [stdout] 47 | |             if operation == "+" {
[INFO] [stdout] ...  |
[INFO] [stdout] 52 | |         });
[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] 44 ~     numbers
[INFO] [stdout] 45 +         .iter()
[INFO] [stdout] 46 +         .fold(if operation == "+" { 0 } else { 1 }, |acc, cur| {
[INFO] [stdout] 47 +             if operation == "+" {
[INFO] [stdout] 48 +                 acc + cur
[INFO] [stdout] 49 +             } else {
[INFO] [stdout] 50 +                 acc * cur
[INFO] [stdout] 51 +             }
[INFO] [stdout] 52 ~         })
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/bin/day6.rs:72:16
[INFO] [stdout]    |
[INFO] [stdout] 72 |             if !(cursor + 1 >= chars.len()) {
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `(cursor + 1 < chars.len())`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/bin/day6.rs:81:5
[INFO] [stdout]    |
[INFO] [stdout] 81 |     return indicies;
[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] 81 -     return indicies;
[INFO] [stdout] 81 +     indicies
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/bin/day6.rs:97:5
[INFO] [stdout]    |
[INFO] [stdout] 97 |     return result;
[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] 97 -     return result;
[INFO] [stdout] 97 +     result
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `j` is used to index `distances`
[INFO] [stdout]   --> src/bin/day8.rs:57:22
[INFO] [stdout]    |
[INFO] [stdout] 57 |             for j in 0..distances.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 and enumerate()
[INFO] [stdout]    |
[INFO] [stdout] 57 -             for j in 0..distances.len() {
[INFO] [stdout] 57 +             for (j, <item>) in distances.iter().enumerate() {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/bin/day8.rs:115:5
[INFO] [stdout]     |
[INFO] [stdout] 115 |     return circuit;
[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] 115 -     return circuit;
[INFO] [stdout] 115 +     circuit
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]   --> src/bin/day8.rs:96:11
[INFO] [stdout]    |
[INFO] [stdout] 96 |     while queue.len() > 0 {
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^ help: using `!is_empty` is clearer and more explicit: `!queue.is_empty()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout]    = note: `#[warn(clippy::len_zero)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]    --> src/bin/day8.rs:106:46
[INFO] [stdout]     |
[INFO] [stdout] 106 |                         if !circuit.contains(&neighbor) {
[INFO] [stdout]     |                                              ^^^^^^^^^ help: change this to: `neighbor`
[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: unneeded `return` statement
[INFO] [stdout]    --> src/bin/day8.rs:119:5
[INFO] [stdout]     |
[INFO] [stdout] 119 | /     return ((box1[0] - box2[0]).pow(2) + (box1[1] - box2[1]).pow(2) + (box1[2] - box2[2]).pow(2))
[INFO] [stdout] 120 | |         .isqrt();
[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] 119 ~     ((box1[0] - box2[0]).pow(2) + (box1[1] - box2[1]).pow(2) + (box1[2] - box2[2]).pow(2))
[INFO] [stdout] 120 ~         .isqrt()
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]    --> src/bin/day8.rs:118:19
[INFO] [stdout]     |
[INFO] [stdout] 118 | fn distance(box1: &Vec<i64>, box2: &Vec<i64>) -> 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] 118 - fn distance(box1: &Vec<i64>, box2: &Vec<i64>) -> i64 {
[INFO] [stdout] 118 + fn distance(box1: &[i64], box2: &Vec<i64>) -> i64 {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]    --> src/bin/day8.rs:118:36
[INFO] [stdout]     |
[INFO] [stdout] 118 | fn distance(box1: &Vec<i64>, box2: &Vec<i64>) -> 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] help: change this to
[INFO] [stdout]     |
[INFO] [stdout] 118 - fn distance(box1: &Vec<i64>, box2: &Vec<i64>) -> i64 {
[INFO] [stdout] 118 + fn distance(box1: &Vec<i64>, box2: &[i64]) -> i64 {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/bin/day6.rs:117:5
[INFO] [stdout]     |
[INFO] [stdout] 117 | /     return nums
[INFO] [stdout] 118 | |         .iter()
[INFO] [stdout] 119 | |         .fold(if operation == "+" { 0 } else { 1 }, |acc, cur| {
[INFO] [stdout] 120 | |             if operation == "+" {
[INFO] [stdout] ...   |
[INFO] [stdout] 125 | |         });
[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] 117 ~     nums
[INFO] [stdout] 118 +         .iter()
[INFO] [stdout] 119 +         .fold(if operation == "+" { 0 } else { 1 }, |acc, cur| {
[INFO] [stdout] 120 +             if operation == "+" {
[INFO] [stdout] 121 +                 acc + cur
[INFO] [stdout] 122 +             } else {
[INFO] [stdout] 123 +                 acc * cur
[INFO] [stdout] 124 +             }
[INFO] [stdout] 125 ~         })
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/bin/day6.rs:108:17
[INFO] [stdout]     |
[INFO] [stdout] 108 |                 return acc.to_string() + &cur.chars().collect::<Vec<char>>()[i].to_string();
[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] 108 -                 return acc.to_string() + &cur.chars().collect::<Vec<char>>()[i].to_string();
[INFO] [stdout] 108 +                 acc.to_string() + &cur.chars().collect::<Vec<char>>()[i].to_string()
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison to empty slice
[INFO] [stdout]   --> src/bin/day5.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 |         if line == "" {
[INFO] [stdout]    |            ^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `line.is_empty()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#comparison_to_empty
[INFO] [stdout]    = note: `#[warn(clippy::comparison_to_empty)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/bin/day5.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 47 |         return acc + (cur[1] - cur[0] + 1);
[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] 47 -         return acc + (cur[1] - cur[0] + 1);
[INFO] [stdout] 47 +         acc + (cur[1] - cur[0] + 1)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/bin/day5.rs:67:5
[INFO] [stdout]    |
[INFO] [stdout] 67 |     return result;
[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] 67 -     return result;
[INFO] [stdout] 67 +     result
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/bin/day5.rs:105:5
[INFO] [stdout]     |
[INFO] [stdout] 105 |     return old_parsed;
[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] 105 -     return old_parsed;
[INFO] [stdout] 105 +     old_parsed
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]   --> src/bin/day5.rs:79:16
[INFO] [stdout]    |
[INFO] [stdout] 79 |             if new_parsed.len() == 0 {
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `new_parsed.is_empty()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout]    = note: `#[warn(clippy::len_zero)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_manifold` is never used
[INFO] [stdout]   --> src/bin/day7.rs:99:4
[INFO] [stdout]    |
[INFO] [stdout] 99 | fn print_manifold(manifold: &Vec<Vec<char>>) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/bin/day7.rs:55:5
[INFO] [stdout]    |
[INFO] [stdout] 55 |     return end_state;
[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] 55 -     return end_state;
[INFO] [stdout] 55 +     end_state
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `if` statement can be collapsed
[INFO] [stdout]   --> src/bin/day7.rs:46:13
[INFO] [stdout]    |
[INFO] [stdout] 46 | /             if char == '|' {
[INFO] [stdout] 47 | |                 if end_state[row_idx + 1][char_idx] == '.' {
[INFO] [stdout] 48 | |                     end_state[row_idx + 1][char_idx] = '|';
[INFO] [stdout] 49 | |                 }
[INFO] [stdout] 50 | |             }
[INFO] [stdout]    | |_____________^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stdout]    = note: `#[warn(clippy::collapsible_if)]` on by default
[INFO] [stdout] help: collapse nested if block
[INFO] [stdout]    |
[INFO] [stdout] 46 ~             if char == '|'
[INFO] [stdout] 47 ~                 && end_state[row_idx + 1][char_idx] == '.' {
[INFO] [stdout] 48 |                     end_state[row_idx + 1][char_idx] = '|';
[INFO] [stdout] 49 ~                 }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/bin/day7.rs:94:5
[INFO] [stdout]    |
[INFO] [stdout] 94 | /     return timelines[timelines.len() - 2]
[INFO] [stdout] 95 | |         .iter()
[INFO] [stdout] 96 | |         .fold(0, |acc, val| acc + val);
[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] 94 ~     timelines[timelines.len() - 2]
[INFO] [stdout] 95 +         .iter()
[INFO] [stdout] 96 ~         .fold(0, |acc, val| acc + val)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `.fold` can be written more succinctly using another method
[INFO] [stdout]   --> src/bin/day7.rs:96:10
[INFO] [stdout]    |
[INFO] [stdout] 96 |         .fold(0, |acc, val| acc + val);
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `sum()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_fold
[INFO] [stdout]    = note: `#[warn(clippy::unnecessary_fold)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/bin/day6.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 44 | /     return numbers
[INFO] [stdout] 45 | |         .iter()
[INFO] [stdout] 46 | |         .fold(if operation == "+" { 0 } else { 1 }, |acc, cur| {
[INFO] [stdout] 47 | |             if operation == "+" {
[INFO] [stdout] ...  |
[INFO] [stdout] 52 | |         });
[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] 44 ~     numbers
[INFO] [stdout] 45 +         .iter()
[INFO] [stdout] 46 +         .fold(if operation == "+" { 0 } else { 1 }, |acc, cur| {
[INFO] [stdout] 47 +             if operation == "+" {
[INFO] [stdout] 48 +                 acc + cur
[INFO] [stdout] 49 +             } else {
[INFO] [stdout] 50 +                 acc * cur
[INFO] [stdout] 51 +             }
[INFO] [stdout] 52 ~         })
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/bin/day6.rs:72:16
[INFO] [stdout]    |
[INFO] [stdout] 72 |             if !(cursor + 1 >= chars.len()) {
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `(cursor + 1 < chars.len())`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/bin/day6.rs:81:5
[INFO] [stdout]    |
[INFO] [stdout] 81 |     return indicies;
[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] 81 -     return indicies;
[INFO] [stdout] 81 +     indicies
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/bin/day6.rs:97:5
[INFO] [stdout]    |
[INFO] [stdout] 97 |     return result;
[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] 97 -     return result;
[INFO] [stdout] 97 +     result
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/bin/day6.rs:117:5
[INFO] [stdout]     |
[INFO] [stdout] 117 | /     return nums
[INFO] [stdout] 118 | |         .iter()
[INFO] [stdout] 119 | |         .fold(if operation == "+" { 0 } else { 1 }, |acc, cur| {
[INFO] [stdout] 120 | |             if operation == "+" {
[INFO] [stdout] ...   |
[INFO] [stdout] 125 | |         });
[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] 117 ~     nums
[INFO] [stdout] 118 +         .iter()
[INFO] [stdout] 119 +         .fold(if operation == "+" { 0 } else { 1 }, |acc, cur| {
[INFO] [stdout] 120 +             if operation == "+" {
[INFO] [stdout] 121 +                 acc + cur
[INFO] [stdout] 122 +             } else {
[INFO] [stdout] 123 +                 acc * cur
[INFO] [stdout] 124 +             }
[INFO] [stdout] 125 ~         })
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/bin/day6.rs:108:17
[INFO] [stdout]     |
[INFO] [stdout] 108 |                 return acc.to_string() + &cur.chars().collect::<Vec<char>>()[i].to_string();
[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] 108 -                 return acc.to_string() + &cur.chars().collect::<Vec<char>>()[i].to_string();
[INFO] [stdout] 108 +                 acc.to_string() + &cur.chars().collect::<Vec<char>>()[i].to_string()
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.92s
[INFO] running `Command { std: "docker" "inspect" "959aaf2da635cfdbbdacfabd724e8519c5ea2769fd950fa28979d7911d2421dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "959aaf2da635cfdbbdacfabd724e8519c5ea2769fd950fa28979d7911d2421dd", kill_on_drop: false }`
[INFO] [stdout] 959aaf2da635cfdbbdacfabd724e8519c5ea2769fd950fa28979d7911d2421dd