[INFO] cloning repository https://github.com/whyando/aoc-2025
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/whyando/aoc-2025" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwhyando%2Faoc-2025", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwhyando%2Faoc-2025'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3c2bce6c85970a8857479211498a259bb8dfc27c
[INFO] linting whyando/aoc-2025/3c2bce6c85970a8857479211498a259bb8dfc27c against nightly for clippy-nonminimal_bool-denied
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwhyando%2Faoc-2025" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-3-tc1/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/whyando/aoc-2025
[INFO] finished tweaking git repo https://github.com/whyando/aoc-2025
[INFO] tweaked toml for git repo https://github.com/whyando/aoc-2025 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/whyando/aoc-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/whyando/aoc-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] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded sprs v0.11.4
[INFO] [stderr]   Downloaded microlp v0.2.11
[INFO] [stderr]   Downloaded ndarray v0.17.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] ebd1c524c6bc8cce41ea2f3c6e8d3dd3bc32a11921cbece4dfa95ef8cfe49da1
[INFO] running `Command { std: "docker" "start" "-a" "ebd1c524c6bc8cce41ea2f3c6e8d3dd3bc32a11921cbece4dfa95ef8cfe49da1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ebd1c524c6bc8cce41ea2f3c6e8d3dd3bc32a11921cbece4dfa95ef8cfe49da1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ebd1c524c6bc8cce41ea2f3c6e8d3dd3bc32a11921cbece4dfa95ef8cfe49da1", kill_on_drop: false }`
[INFO] [stdout] ebd1c524c6bc8cce41ea2f3c6e8d3dd3bc32a11921cbece4dfa95ef8cfe49da1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 4a68a249b39729c856c1f7bfd1a8240589bb0e279a1938cc03057c6c9556ab8c
[INFO] running `Command { std: "docker" "start" "-a" "4a68a249b39729c856c1f7bfd1a8240589bb0e279a1938cc03057c6c9556ab8c", kill_on_drop: false }`
[INFO] [stderr]    Compiling matrixmultiply v0.3.10
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]     Checking log v0.4.29
[INFO] [stderr]     Checking ndarray v0.17.1
[INFO] [stderr]     Checking sprs v0.11.4
[INFO] [stderr]     Checking microlp v0.2.11
[INFO] [stderr]     Checking aoc-2025 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]   --> src/day01.rs:19:17
[INFO] [stdout]    |
[INFO] [stdout] 19 |                 x = x - steps;
[INFO] [stdout]    |                 ^^^^^^^^^^^^^ help: replace it with: `x -= steps`
[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/day01.rs:23:17
[INFO] [stdout]    |
[INFO] [stdout] 23 |                 x = x + steps;
[INFO] [stdout]    |                 ^^^^^^^^^^^^^ help: replace it with: `x += steps`
[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: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]    --> src/day02.rs:156:26
[INFO] [stdout]     |
[INFO] [stdout] 156 |         assert_eq!(solve(&test_input), (1227775554, 4174379265));
[INFO] [stdout]     |                          ^^^^^^^^^^^ help: change this to: `test_input`
[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: the loop variable `i` is used to index `line`
[INFO] [stdout]   --> src/day03.rs:20:22
[INFO] [stdout]    |
[INFO] [stdout] 20 |             for i in 0..line.len() - 1 {
[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] 20 -             for i in 0..line.len() - 1 {
[INFO] [stdout] 20 +             for (i, <item>) in line.iter().enumerate().take(line.len() - 1) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `i` is only used to index `line`
[INFO] [stdout]   --> src/day03.rs:27:22
[INFO] [stdout]    |
[INFO] [stdout] 27 |             for i in largest_index + 1..line.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] 27 -             for i in largest_index + 1..line.len() {
[INFO] [stdout] 27 +             for <item> in line.iter().skip(largest_index + 1) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `i` is used to index `line`
[INFO] [stdout]   --> src/day03.rs:43:26
[INFO] [stdout]    |
[INFO] [stdout] 43 |                 for i in min_index..line.len() - (12 - digit) {
[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 and enumerate()
[INFO] [stdout]    |
[INFO] [stdout] 43 -                 for i in min_index..line.len() - (12 - digit) {
[INFO] [stdout] 43 +                 for (i, <item>) in line.iter().enumerate().take(line.len() - (12 - digit)).skip(min_index) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `i` is used to index `line`
[INFO] [stdout]   --> src/day03.rs:83:22
[INFO] [stdout]    |
[INFO] [stdout] 83 |             for i in 0..n - 1 {
[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 and enumerate()
[INFO] [stdout]    |
[INFO] [stdout] 83 -             for i in 0..n - 1 {
[INFO] [stdout] 83 +             for (i, <item>) in line.iter().enumerate().take(n - 1) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `i` is only used to index `line`
[INFO] [stdout]   --> src/day03.rs:90:22
[INFO] [stdout]    |
[INFO] [stdout] 90 |             for i in largest_index + 1..n {
[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] 90 -             for i in largest_index + 1..n {
[INFO] [stdout] 90 +             for <item> in line.iter().take(n).skip(largest_index + 1) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `i` is used to index `line`
[INFO] [stdout]    --> src/day03.rs:102:22
[INFO] [stdout]     |
[INFO] [stdout] 102 |             for i in 0..n {
[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 and enumerate()
[INFO] [stdout]     |
[INFO] [stdout] 102 -             for i in 0..n {
[INFO] [stdout] 102 +             for (i, <item>) in line.iter().enumerate().take(n) {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `i` is only used to index `v`
[INFO] [stdout]    --> src/day03.rs:121:22
[INFO] [stdout]     |
[INFO] [stdout] 121 |             for i in 0..12 {
[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] 121 -             for i in 0..12 {
[INFO] [stdout] 121 +             for <item> in &v {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary use of `to_vec`
[INFO] [stdout]   --> src/day05.rs:96:26
[INFO] [stdout]    |
[INFO] [stdout] 96 |         assert_eq!(solve(&test_input.to_vec()), (3, 14));
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^ help: use: `test_input.as_ref()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_to_owned
[INFO] [stdout]    = note: `#[warn(clippy::unnecessary_to_owned)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `j` is only used to index `lines`
[INFO] [stdout]   --> src/day06.rs:58:26
[INFO] [stdout]    |
[INFO] [stdout] 58 |                 for j in op_idx..last_op_idx {
[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] 58 -                 for j in op_idx..last_op_idx {
[INFO] [stdout] 58 +                 for <item> in lines.iter().take(last_op_idx).skip(op_idx) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `j` is only used to index `lines`
[INFO] [stdout]   --> src/day06.rs:66:22
[INFO] [stdout]    |
[INFO] [stdout] 66 |             for j in op_idx..last_op_idx {
[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] 66 -             for j in op_idx..last_op_idx {
[INFO] [stdout] 66 +             for <item> in lines.iter().take(last_op_idx).skip(op_idx) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `i` is only used to index `lines`
[INFO] [stdout]   --> src/day06.rs:68:26
[INFO] [stdout]    |
[INFO] [stdout] 68 |                 for i in 0..HEIGHT {
[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] 68 -                 for i in 0..HEIGHT {
[INFO] [stdout] 68 +                 for <item> in lines.iter().take(HEIGHT) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `j` is only used to index `lines`
[INFO] [stdout]   --> src/day06.rs:81:26
[INFO] [stdout]    |
[INFO] [stdout] 81 |                 for j in op_idx..last_op_idx {
[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] 81 -                 for j in op_idx..last_op_idx {
[INFO] [stdout] 81 +                 for <item> in lines.iter().take(last_op_idx).skip(op_idx) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `j` is only used to index `lines`
[INFO] [stdout]   --> src/day06.rs:90:22
[INFO] [stdout]    |
[INFO] [stdout] 90 |             for j in op_idx..last_op_idx {
[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] 90 -             for j in op_idx..last_op_idx {
[INFO] [stdout] 90 +             for <item> in lines.iter().take(last_op_idx).skip(op_idx) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `i` is only used to index `lines`
[INFO] [stdout]   --> src/day06.rs:92:26
[INFO] [stdout]    |
[INFO] [stdout] 92 |                 for i in 0..HEIGHT {
[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] 92 -                 for i in 0..HEIGHT {
[INFO] [stdout] 92 +                 for <item> in lines.iter().take(HEIGHT) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enclosing `Ok` and `?` operator are unneeded
[INFO] [stdout]  --> src/day07.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     Ok(std::fs::read(path)?)
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_question_mark
[INFO] [stdout]   = note: `#[warn(clippy::needless_question_mark)]` on by default
[INFO] [stdout] help: remove the enclosing `Ok` and `?` operator
[INFO] [stdout]   |
[INFO] [stdout] 2 -     Ok(std::fs::read(path)?)
[INFO] [stdout] 2 +     std::fs::read(path)
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary use of `to_vec`
[INFO] [stdout]   --> src/day07.rs:59:32
[INFO] [stdout]    |
[INFO] [stdout] 59 |         assert_eq!(solve::<15>(&test_input.to_vec()), (21, 40));
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^^^^ help: use: `test_input.as_ref()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_to_owned
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enclosing `Ok` and `?` operator are unneeded
[INFO] [stdout]  --> src/day08.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     Ok(std::fs::read(path)?)
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_question_mark
[INFO] [stdout] help: remove the enclosing `Ok` and `?` operator
[INFO] [stdout]   |
[INFO] [stdout] 4 -     Ok(std::fs::read(path)?)
[INFO] [stdout] 4 +     std::fs::read(path)
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: consider using `sort_unstable_by_key`
[INFO] [stdout]    --> src/day08.rs:113:5
[INFO] [stdout]     |
[INFO] [stdout] 113 |     edges.sort_unstable_by(|a, b| a.1.cmp(&b.1));
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_sort_by
[INFO] [stdout]     = note: `#[warn(clippy::unnecessary_sort_by)]` on by default
[INFO] [stdout] help: try
[INFO] [stdout]     |
[INFO] [stdout] 113 -     edges.sort_unstable_by(|a, b| a.1.cmp(&b.1));
[INFO] [stdout] 113 +     edges.sort_unstable_by_key(|a| a.1);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary use of `to_vec`
[INFO] [stdout]    --> src/day08.rs:177:26
[INFO] [stdout]     |
[INFO] [stdout] 177 |         assert_eq!(solve(&test_input.to_vec(), 10), (40, 25272));
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^ help: use: `test_input.as_ref()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_to_owned
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enclosing `Ok` and `?` operator are unneeded
[INFO] [stdout]  --> src/day09.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     Ok(std::fs::read(path)?)
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_question_mark
[INFO] [stdout] help: remove the enclosing `Ok` and `?` operator
[INFO] [stdout]   |
[INFO] [stdout] 4 -     Ok(std::fs::read(path)?)
[INFO] [stdout] 4 +     std::fs::read(path)
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary use of `to_vec`
[INFO] [stdout]    --> src/day09.rs:264:26
[INFO] [stdout]     |
[INFO] [stdout] 264 |         assert_eq!(solve(&test_input.to_vec()), (50, 24));
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^ help: use: `test_input.as_ref()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_to_owned
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enclosing `Ok` and `?` operator are unneeded
[INFO] [stdout]  --> src/day10.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     Ok(std::fs::read(path)?)
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_question_mark
[INFO] [stdout] help: remove the enclosing `Ok` and `?` operator
[INFO] [stdout]   |
[INFO] [stdout] 4 -     Ok(std::fs::read(path)?)
[INFO] [stdout] 4 +     std::fs::read(path)
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]   --> src/day01.rs:19:17
[INFO] [stdout]    |
[INFO] [stdout] 19 |                 x = x - steps;
[INFO] [stdout]    |                 ^^^^^^^^^^^^^ help: replace it with: `x -= steps`
[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/day01.rs:23:17
[INFO] [stdout]    |
[INFO] [stdout] 23 |                 x = x + steps;
[INFO] [stdout]    |                 ^^^^^^^^^^^^^ help: replace it with: `x += steps`
[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: redundant closure
[INFO] [stdout]   --> src/day10.rs:77:18
[INFO] [stdout]    |
[INFO] [stdout] 77 |             .map(|s| parse_u64(s))
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^ help: replace the closure with the function itself: `parse_u64`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure
[INFO] [stdout]    = note: `#[warn(clippy::redundant_closure)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `j` is used to index `vars`
[INFO] [stdout]    --> src/day10.rs:112:18
[INFO] [stdout]     |
[INFO] [stdout] 112 |         for j in 0..n_buttons {
[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 and enumerate()
[INFO] [stdout]     |
[INFO] [stdout] 112 -         for j in 0..n_buttons {
[INFO] [stdout] 112 +         for (j, <item>) in vars.iter().enumerate().take(n_buttons) {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary use of `to_vec`
[INFO] [stdout]    --> src/day10.rs:191:26
[INFO] [stdout]     |
[INFO] [stdout] 191 |         assert_eq!(solve(&test_input.to_vec()), (7, 33));
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^ help: use: `test_input.as_ref()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_to_owned
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enclosing `Ok` and `?` operator are unneeded
[INFO] [stdout]  --> src/day11.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     Ok(std::fs::read(path)?)
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_question_mark
[INFO] [stdout] help: remove the enclosing `Ok` and `?` operator
[INFO] [stdout]   |
[INFO] [stdout] 4 -     Ok(std::fs::read(path)?)
[INFO] [stdout] 4 +     std::fs::read(path)
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `i` is used to index `line`
[INFO] [stdout]   --> src/day03.rs:20:22
[INFO] [stdout]    |
[INFO] [stdout] 20 |             for i in 0..line.len() - 1 {
[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] 20 -             for i in 0..line.len() - 1 {
[INFO] [stdout] 20 +             for (i, <item>) in line.iter().enumerate().take(line.len() - 1) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `i` is only used to index `line`
[INFO] [stdout]   --> src/day03.rs:27:22
[INFO] [stdout]    |
[INFO] [stdout] 27 |             for i in largest_index + 1..line.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] 27 -             for i in largest_index + 1..line.len() {
[INFO] [stdout] 27 +             for <item> in line.iter().skip(largest_index + 1) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `i` is used to index `line`
[INFO] [stdout]   --> src/day03.rs:43:26
[INFO] [stdout]    |
[INFO] [stdout] 43 |                 for i in min_index..line.len() - (12 - digit) {
[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 and enumerate()
[INFO] [stdout]    |
[INFO] [stdout] 43 -                 for i in min_index..line.len() - (12 - digit) {
[INFO] [stdout] 43 +                 for (i, <item>) in line.iter().enumerate().take(line.len() - (12 - digit)).skip(min_index) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `i` is used to index `line`
[INFO] [stdout]   --> src/day03.rs:83:22
[INFO] [stdout]    |
[INFO] [stdout] 83 |             for i in 0..n - 1 {
[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 and enumerate()
[INFO] [stdout]    |
[INFO] [stdout] 83 -             for i in 0..n - 1 {
[INFO] [stdout] 83 +             for (i, <item>) in line.iter().enumerate().take(n - 1) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `i` is only used to index `line`
[INFO] [stdout]   --> src/day03.rs:90:22
[INFO] [stdout]    |
[INFO] [stdout] 90 |             for i in largest_index + 1..n {
[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] 90 -             for i in largest_index + 1..n {
[INFO] [stdout] 90 +             for <item> in line.iter().take(n).skip(largest_index + 1) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `i` is used to index `line`
[INFO] [stdout]    --> src/day03.rs:102:22
[INFO] [stdout]     |
[INFO] [stdout] 102 |             for i in 0..n {
[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 and enumerate()
[INFO] [stdout]     |
[INFO] [stdout] 102 -             for i in 0..n {
[INFO] [stdout] 102 +             for (i, <item>) in line.iter().enumerate().take(n) {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `i` is only used to index `v`
[INFO] [stdout]    --> src/day03.rs:121:22
[INFO] [stdout]     |
[INFO] [stdout] 121 |             for i in 0..12 {
[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] 121 -             for i in 0..12 {
[INFO] [stdout] 121 +             for <item> in &v {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary use of `to_vec`
[INFO] [stdout]    --> src/day11.rs:143:26
[INFO] [stdout]     |
[INFO] [stdout] 143 |         assert_eq!(solve(&test_input.to_vec()), (5, 0));
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^ help: use: `test_input.as_ref()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_to_owned
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary use of `to_vec`
[INFO] [stdout]    --> src/day11.rs:161:26
[INFO] [stdout]     |
[INFO] [stdout] 161 |         assert_eq!(solve(&test_input.to_vec()), (0, 2));
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^ help: use: `test_input.as_ref()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_to_owned
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enclosing `Ok` and `?` operator are unneeded
[INFO] [stdout]  --> src/day12.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     Ok(std::fs::read(path)?)
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_question_mark
[INFO] [stdout] help: remove the enclosing `Ok` and `?` operator
[INFO] [stdout]   |
[INFO] [stdout] 2 -     Ok(std::fs::read(path)?)
[INFO] [stdout] 2 +     std::fs::read(path)
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `if` statement can be collapsed
[INFO] [stdout]   --> src/day12.rs:77:21
[INFO] [stdout]    |
[INFO] [stdout] 77 | /                     if let Some(x_pos) = dim_str.find('x') {
[INFO] [stdout] 78 | |                         if let (Ok(width), Ok(height)) = (
[INFO] [stdout] 79 | |                             dim_str[..x_pos].parse::<usize>(),
[INFO] [stdout] 80 | |                             dim_str[x_pos + 1..].trim().parse::<usize>(),
[INFO] [stdout] ...  |
[INFO] [stdout] 95 | |                     }
[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] 77 ~                     if let Some(x_pos) = dim_str.find('x')
[INFO] [stdout] 78 ~                         && let (Ok(width), Ok(height)) = (
[INFO] [stdout] 79 |                             dim_str[..x_pos].parse::<usize>(),
[INFO] [stdout] ...
[INFO] [stdout] 93 |                             });
[INFO] [stdout] 94 ~                         }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary use of `to_vec`
[INFO] [stdout]    --> src/day12.rs:177:26
[INFO] [stdout]     |
[INFO] [stdout] 177 |         assert_eq!(solve(&test_input.to_vec()), (0, 0));
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^ help: use: `test_input.as_ref()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_to_owned
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `j` is only used to index `lines`
[INFO] [stdout]   --> src/day06.rs:58:26
[INFO] [stdout]    |
[INFO] [stdout] 58 |                 for j in op_idx..last_op_idx {
[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] 58 -                 for j in op_idx..last_op_idx {
[INFO] [stdout] 58 +                 for <item> in lines.iter().take(last_op_idx).skip(op_idx) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `j` is only used to index `lines`
[INFO] [stdout]   --> src/day06.rs:66:22
[INFO] [stdout]    |
[INFO] [stdout] 66 |             for j in op_idx..last_op_idx {
[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] 66 -             for j in op_idx..last_op_idx {
[INFO] [stdout] 66 +             for <item> in lines.iter().take(last_op_idx).skip(op_idx) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `i` is only used to index `lines`
[INFO] [stdout]   --> src/day06.rs:68:26
[INFO] [stdout]    |
[INFO] [stdout] 68 |                 for i in 0..HEIGHT {
[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] 68 -                 for i in 0..HEIGHT {
[INFO] [stdout] 68 +                 for <item> in lines.iter().take(HEIGHT) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `j` is only used to index `lines`
[INFO] [stdout]   --> src/day06.rs:81:26
[INFO] [stdout]    |
[INFO] [stdout] 81 |                 for j in op_idx..last_op_idx {
[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] 81 -                 for j in op_idx..last_op_idx {
[INFO] [stdout] 81 +                 for <item> in lines.iter().take(last_op_idx).skip(op_idx) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `j` is only used to index `lines`
[INFO] [stdout]   --> src/day06.rs:90:22
[INFO] [stdout]    |
[INFO] [stdout] 90 |             for j in op_idx..last_op_idx {
[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] 90 -             for j in op_idx..last_op_idx {
[INFO] [stdout] 90 +             for <item> in lines.iter().take(last_op_idx).skip(op_idx) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `i` is only used to index `lines`
[INFO] [stdout]   --> src/day06.rs:92:26
[INFO] [stdout]    |
[INFO] [stdout] 92 |                 for i in 0..HEIGHT {
[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] 92 -                 for i in 0..HEIGHT {
[INFO] [stdout] 92 +                 for <item> in lines.iter().take(HEIGHT) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enclosing `Ok` and `?` operator are unneeded
[INFO] [stdout]  --> src/day07.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     Ok(std::fs::read(path)?)
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_question_mark
[INFO] [stdout]   = note: `#[warn(clippy::needless_question_mark)]` on by default
[INFO] [stdout] help: remove the enclosing `Ok` and `?` operator
[INFO] [stdout]   |
[INFO] [stdout] 2 -     Ok(std::fs::read(path)?)
[INFO] [stdout] 2 +     std::fs::read(path)
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enclosing `Ok` and `?` operator are unneeded
[INFO] [stdout]  --> src/day08.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     Ok(std::fs::read(path)?)
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_question_mark
[INFO] [stdout] help: remove the enclosing `Ok` and `?` operator
[INFO] [stdout]   |
[INFO] [stdout] 4 -     Ok(std::fs::read(path)?)
[INFO] [stdout] 4 +     std::fs::read(path)
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: consider using `sort_unstable_by_key`
[INFO] [stdout]    --> src/day08.rs:113:5
[INFO] [stdout]     |
[INFO] [stdout] 113 |     edges.sort_unstable_by(|a, b| a.1.cmp(&b.1));
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_sort_by
[INFO] [stdout]     = note: `#[warn(clippy::unnecessary_sort_by)]` on by default
[INFO] [stdout] help: try
[INFO] [stdout]     |
[INFO] [stdout] 113 -     edges.sort_unstable_by(|a, b| a.1.cmp(&b.1));
[INFO] [stdout] 113 +     edges.sort_unstable_by_key(|a| a.1);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enclosing `Ok` and `?` operator are unneeded
[INFO] [stdout]  --> src/day09.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     Ok(std::fs::read(path)?)
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_question_mark
[INFO] [stdout] help: remove the enclosing `Ok` and `?` operator
[INFO] [stdout]   |
[INFO] [stdout] 4 -     Ok(std::fs::read(path)?)
[INFO] [stdout] 4 +     std::fs::read(path)
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enclosing `Ok` and `?` operator are unneeded
[INFO] [stdout]  --> src/day10.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     Ok(std::fs::read(path)?)
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_question_mark
[INFO] [stdout] help: remove the enclosing `Ok` and `?` operator
[INFO] [stdout]   |
[INFO] [stdout] 4 -     Ok(std::fs::read(path)?)
[INFO] [stdout] 4 +     std::fs::read(path)
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant closure
[INFO] [stdout]   --> src/day10.rs:77:18
[INFO] [stdout]    |
[INFO] [stdout] 77 |             .map(|s| parse_u64(s))
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^ help: replace the closure with the function itself: `parse_u64`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure
[INFO] [stdout]    = note: `#[warn(clippy::redundant_closure)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `j` is used to index `vars`
[INFO] [stdout]    --> src/day10.rs:112:18
[INFO] [stdout]     |
[INFO] [stdout] 112 |         for j in 0..n_buttons {
[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 and enumerate()
[INFO] [stdout]     |
[INFO] [stdout] 112 -         for j in 0..n_buttons {
[INFO] [stdout] 112 +         for (j, <item>) in vars.iter().enumerate().take(n_buttons) {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enclosing `Ok` and `?` operator are unneeded
[INFO] [stdout]  --> src/day11.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     Ok(std::fs::read(path)?)
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_question_mark
[INFO] [stdout] help: remove the enclosing `Ok` and `?` operator
[INFO] [stdout]   |
[INFO] [stdout] 4 -     Ok(std::fs::read(path)?)
[INFO] [stdout] 4 +     std::fs::read(path)
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enclosing `Ok` and `?` operator are unneeded
[INFO] [stdout]  --> src/day12.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     Ok(std::fs::read(path)?)
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_question_mark
[INFO] [stdout] help: remove the enclosing `Ok` and `?` operator
[INFO] [stdout]   |
[INFO] [stdout] 2 -     Ok(std::fs::read(path)?)
[INFO] [stdout] 2 +     std::fs::read(path)
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `if` statement can be collapsed
[INFO] [stdout]   --> src/day12.rs:77:21
[INFO] [stdout]    |
[INFO] [stdout] 77 | /                     if let Some(x_pos) = dim_str.find('x') {
[INFO] [stdout] 78 | |                         if let (Ok(width), Ok(height)) = (
[INFO] [stdout] 79 | |                             dim_str[..x_pos].parse::<usize>(),
[INFO] [stdout] 80 | |                             dim_str[x_pos + 1..].trim().parse::<usize>(),
[INFO] [stdout] ...  |
[INFO] [stdout] 95 | |                     }
[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] 77 ~                     if let Some(x_pos) = dim_str.find('x')
[INFO] [stdout] 78 ~                         && let (Ok(width), Ok(height)) = (
[INFO] [stdout] 79 |                             dim_str[..x_pos].parse::<usize>(),
[INFO] [stdout] ...
[INFO] [stdout] 93 |                             });
[INFO] [stdout] 94 ~                         }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.46s
[INFO] running `Command { std: "docker" "inspect" "4a68a249b39729c856c1f7bfd1a8240589bb0e279a1938cc03057c6c9556ab8c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a68a249b39729c856c1f7bfd1a8240589bb0e279a1938cc03057c6c9556ab8c", kill_on_drop: false }`
[INFO] [stdout] 4a68a249b39729c856c1f7bfd1a8240589bb0e279a1938cc03057c6c9556ab8c